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Quantitative investigation on collapse margin of steel high-rise buildings subjected to extremely severe earthquakes 被引量:10
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作者 Lin Xuchuan Mikiko Kato +1 位作者 Zhang Lingxin Masayoshi Nakashima 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2018年第3期445-457,共13页
Reponses of structures subjected to severe earthquakes sometimes significantly surpass what was considered in the design.It is important to investigate the failure mechanism and collapse margin of structures beyond de... Reponses of structures subjected to severe earthquakes sometimes significantly surpass what was considered in the design.It is important to investigate the failure mechanism and collapse margin of structures beyond design,especially for high-rise buildings.In this study,steel high-rise buildings using either square concrete-filled-tube(CFT) columns or steel tube columns are designed.A detailed three-dimensional(3 D) structural model is developed to analyze the seismic behavior of a steel high-rise towards a complete collapse.The effectiveness is verified by both component tests and a full-scale shaking table test.The collapse margin,which is defined as the ratio of PGA between the collapse level to the design major earthquake level(Level 2),is quantified by a series of numerical simulations using incremental dynamic analyses(IDA).The baseline building using CFT columns collapsed with a weak first story mechanism and presented a collapse margin ranging from 10 to 20.The significant variation in the collapse margin was caused by the different characteristics of the input ground motions.The building using equivalent steel columns collapsed earlier due to the significant shortening of the locally buckled columns,exhibiting only 57% of the collapse margin of the baseline building.The influence of reducing the height of the first story was quite significant.The shortened first story not only enlarged the collapse margin by 20%,but also changed the collapse mode. 展开更多
关键词 collapse quantification steel high-rise building numerical models local buckling collapse mechanism
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A review on research of fire dynamics in high-rise buildings 被引量:3
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作者 Jinhua Sun Longhua Hu Ying Zhang 《Theoretical & Applied Mechanics Letters》 CAS 2013年第4期1-13,共13页
Since serious fire occurred frequently in recent years, fire safety of high-rise building has attracted extensive attention. A National Basic Research Program (973 program) of China has been set up by Ministry of Sc... Since serious fire occurred frequently in recent years, fire safety of high-rise building has attracted extensive attention. A National Basic Research Program (973 program) of China has been set up by Ministry of Science and Technology (MOST) of China in 2012 to meet the research requirements of fire safety in high-rise buildings. This paper reviews the current state of art of research on fire dynamics of high-rise buildings, including the up-to-date progress of this project. The following three subjects on fire dynamics of high-rise buildings are addressed in this review: the ejected flame and fire plume behavior over facade out of the compartment window, the flame spread behavior over facade thermal insulation materiMs, and the buoyancy-driven smoke transportation characteristics along long vertical channels in high-rise buildings. Prospective future works are discussed and summarized. 展开更多
关键词 high-rise building fire dynamics facade flame fire spread smoke transportation
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Effects of high modes on the wind-induced response of super high-rise buildings 被引量:2
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作者 Feng Ruoqiang Guirong Yan Ge Jinming 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2012年第3期427-434,共8页
For super high-rise buildings, the vibration period of the basic mode is several seconds, and it is very close to the period of the fluctuating wind. The damping of super high-rise buildings is low, so super high-rise... For super high-rise buildings, the vibration period of the basic mode is several seconds, and it is very close to the period of the fluctuating wind. The damping of super high-rise buildings is low, so super high-rise buildings are very sensitive to fluctuating wind. The wind load is one of the key loads in the design of super high-rise buildings. It is known that only the basic mode is needed in the wind-response analysis of tall buildings. However, for super high-rise buildings, especially for the acceleration response, because of the frequency amplification of the high modes, the high modes and the mode coupling may need to be considered. Three typical super high-rise projects with the SMPSS in wind tunnel tests and the random vibration theory method were used to analyze the effect of high modes on the wind-induced response. The conclusions can be drawn as follows. First, for the displacement response, the basic mode is dominant, and the high modes can be neglected. Second, for the acceleration response, the high modes and the mode coupling should be considered. Lastly, the strain energy of modes can only give the vibration energy distribution of the high-rise building, and it cannot describe the local wind-induced vibration of high-rise buildings, especially for the top acceleration response. 展开更多
关键词 super high-rise building wind tunnel test mode couple wind-induced response
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Numerical Simulation of Wind Field Characteristics around Two Adjacent High-Rise Buildings 被引量:2
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作者 Wenkai He Weibin Yuan 《Journal of Applied Mathematics and Physics》 2014年第6期264-268,共5页
This paper based on Reynolds-averaged Navier-Stokes equations standard ?model [1];the surface pressure on the wind field around two adjacent high-rise buildings was numerically simulated with software Fluent. The resu... This paper based on Reynolds-averaged Navier-Stokes equations standard ?model [1];the surface pressure on the wind field around two adjacent high-rise buildings was numerically simulated with software Fluent. The results show that with the influence of adjacent high-rise building, numerical simulation is a good way to study the wind field around high-rise building and the distribution of wind pressure on building’ surface. The pressures on the windward surface are positive with the maximum at 2/3 H height and have lower values on the top and bottom. The pressures on the leeward surface and two sides were negative. Due to the serious flow separation at the corner of building’s windward, the wind field has a high turbulent kinetic energy. 展开更多
关键词 high-rise building NUMERICAL Simulation WIND Field Characteristics TURBULENCE Model
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Editorial: Special subject on the mechanical behavior of fire dynamics in high-rise buildings
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作者 Jinhua Sun Longhua Hu 《Theoretical & Applied Mechanics Letters》 CAS 2014年第3期61-62,共2页
With rapid economic and social development in China, high-rise buildings have continuously sprung up since 2006. However, several big fire accidents in high-rise buildings such as the Beijing Television Cultural Cente... With rapid economic and social development in China, high-rise buildings have continuously sprung up since 2006. However, several big fire accidents in high-rise buildings such as the Beijing Television Cultural Center fire in 2009 and the Shanghai Jing'an District fire in 2010 etc. have claimed people's lives and caused huge amounts of economic and property losses, 展开更多
关键词 high EDITORIAL Special subject on the mechanical behavior of fire dynamics in high-rise buildings
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Model Reduction Methods for High-Rise Buildings with Active Mass Damper Control Systems
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作者 Jun Teng Hou-Bing Xing Cheng-Yin Liu 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2013年第6期37-45,共9页
To improve the performance of an active mass damper control system,the controller should be designed based on a reduced-order model. An improved method based on balanced truncation method was proposed to reduce the di... To improve the performance of an active mass damper control system,the controller should be designed based on a reduced-order model. An improved method based on balanced truncation method was proposed to reduce the dimension of high-rise buildings,and was compared with other widely used reduction methods by using a framework with ten floors. This optimized method has improvement of reduction process and choice of the order. Based on the reduced-order model obtained by the improved method and pole-assignment algorithm,a controller was designed. Finally,a comparative analysis of structural responses,transfer functions,and poles was conducted on an actual high-rise building. The results show the effectiveness of the improved method. 展开更多
关键词 high-rise building active mass damper model reduction controller designCLC number:TU352 Document code:AArticle ID:1005-9113(2013)06-0037-09
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Development of the Separate Air-Supply Type of Pressurization Smoke Control System for the Stairwells of High-Rise Buildings in Korea
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作者 Jung-Yup Kim Hyun-Joon Shin +2 位作者 Chan-Sol Ahn Ji-Seok Kim Sang-Hyun Joo 《Open Journal of Fluid Dynamics》 2014年第3期251-262,共12页
The pressurization smoke control system has been commonly used as a smoke control system at the emergency stairs of high-rise buildings. However, a higher possibility of overpressure between the lobby and the accommod... The pressurization smoke control system has been commonly used as a smoke control system at the emergency stairs of high-rise buildings. However, a higher possibility of overpressure between the lobby and the accommodation or pressure drop in the lobby could lead to failure in achievement of the purpose of pressurization system, particularly when supplying the leakage and supplementary air flow through one air-supply path at a time. To improve this particular issue, the devise configurations, as well as the different ways to supply the leakage and supplementary air flow through the different flow passages have been proposed. The performance of the trial product was evaluated on the test bed, ultimately providing a safe evacuation environment if high-rise buildings fired. 展开更多
关键词 PRESSURIZATION System SMOKE Control high-rise building EVACUATION STAIRWELL Field EXPERIMENT
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Field measurements for calibration of simplified models of the stiffening effect of infill masonry walls in high-rise RC framed and shear-wall buildings
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作者 Zhou Yun Pei Yilin +2 位作者 Zhou Yi Hyeon-Jong Hwang Yi Weijian 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2020年第1期87-104,共18页
As a type of nonstructural component, infill walls play a significant role in the seismic behavior of high-rise buildings. However, the stiffness of the infill wall is generally either ignored or considered by simplif... As a type of nonstructural component, infill walls play a significant role in the seismic behavior of high-rise buildings. However, the stiffness of the infill wall is generally either ignored or considered by simplified empirical criteria that lead to a period shortening. The difference can be greatly decreased by using a structural identification methodology. In this study, an ambient vibration test was performed on four on-site reinforced concrete high-rise buildings, and the design results were compared with the PKPM models using corresponding finite element(FE) models. A diagonal strut model was used to simulate the behavior of the infill wall, and the identified modal parameters measured from the on-site test were employed to calibrate the parameters of the diagonal strut in the FE models. The SAP2000 models with calibrated elastic modulus were used to evaluate the seismic response in the elastic state. Based on the load-displacement relationship of the infill wall, nonlinear dynamic analysis models were built in PERFORM-3 D and calibrated using the measured modal periods. The analysis results revealed that the structural performance under small/large earthquake records were both strengthened by infill walls, and the contribution of infill walls should be considered for better accuracy in the design process. 展开更多
关键词 high-rise building ambient vibration test model calibration infi ll wall seismic performance nonlinear dynamic analysis
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Method for Evaluating the Influence of Obstruction of Sea Breeze by Clusters of High-Rise Buildings on the Urban Heat Island Effect
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作者 Shota Sashiyama Kayoko Yamamoto 《Journal of Environmental Protection》 2014年第11期983-996,共14页
This study aims to propose a method for quantitatively evaluating the influence which the obstruction of sea breezes by clusters of high-rise buildings has on the urban heat island effect using a weather simulation mo... This study aims to propose a method for quantitatively evaluating the influence which the obstruction of sea breezes by clusters of high-rise buildings has on the urban heat island effect using a weather simulation model and Geographic Information Systems (GIS). Specifically, a method of evaluating the influence of the obstruction of sea breeze by high-rise buildings on the urban heat island effect was proposed. In the method, two scenarios that imagine urban forms which differ with regard to whether or not they contain high-rise buildings are created and weather simulation is conducted, and the results of the simulations are comparatively analyzed focusing on temperature and wind speed. Evaluation was conducted in two stages, and Shiodome of Minato City in the Tokyo Metropolis was selected as the region for evaluation. In two stages of evaluation, a rise in temperature of approximately 0.3 K and a reduction in wind speed of approximately 1 m/s were observed in a region approximately five to ten kilometers square downwind of high-rise buildings in the period 6 PM to 9 PM, and a higher temperature caused by the obstruction of sea breeze by high-rise buildings was identified. The fact that such a higher temperature was confirmed in the time period from 6 PM onwards, in which the temperature decreases, reveals that obstruction of sea breeze by high-rise buildings dulls the decrease in temperature which occurs from evening onwards, and influences nighttime urban heat island formation. 展开更多
关键词 Urban Heat ISLAND Effect SEA Breeze CLUSTERS of high-rise buildings WEATHER Simulation Model GIS
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Survey-Based Analysis of Water Consumption Law in High-Rise Public Buildings and Water-Saving Performance of Pressure-Reducing Measures
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作者 Jinhui Zhao Xi Xie +3 位作者 Chentong Lin Yao Sun Ruiju Liu Mengke Wu 《Journal of Geoscience and Environment Protection》 2017年第9期189-203,共15页
Facing the contradiction of water scarcity and water wastage in most cities of China, this study aims at probing into the factors influencing water-use efficiency and assessing water-saving potential by adopting press... Facing the contradiction of water scarcity and water wastage in most cities of China, this study aims at probing into the factors influencing water-use efficiency and assessing water-saving potential by adopting pressure control measures based on field survey conducted in 23 high-rise buildings in Suqian, China and laboratory tests. Results showed that per capita water consumption (PCWC) exceeding water consumption norms is common in these buildings. The hourly water consumption variation law is quite different among different types of buildings. These differences should be considered in designing building water supply systems to lower water and energy consumption. On the basis of correlation analysis, the order of factors influencing the PCWC follows average tap water pressure, percapita building area, and building age, suggesting pressure management in high-rise buildings is a key water-saving measure. Field tests of outflow characteristics under different water pressures indicated that over-pressure outflow (OPO) is a common cause of water wastage in buildings, however, no branch pipe pressure control measures were found in all the surveyed buildings. Laboratory tests showed that branch pipe pressure-reducing measures can lower water consumption and improve the comfortability of use as well. Therefore, in addition to applying high efficiency water-saving devices, we strongly recommend that branch pipe pressure-reducing measures should be strictly implemented in designing new building water supply systems and reconstruction of existing old building water supply systems, thereby, promoting water, energy saving and development of green building. 展开更多
关键词 Water SAVING high-rise PUBLIC building Over-Pressure OUTFLOW Pressure-Reducing Measure OUTFLOW Characteristics
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Correg-Yolov3:a Method for Dense Buildings Detection in High-resolution Remote Sensing Images 被引量:4
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作者 Zhanlong CHEN Shuangjiang LI +3 位作者 Yongyang XU Daozhu XU Chao MA Junli ZHAO 《Journal of Geodesy and Geoinformation Science》 CSCD 2023年第2期51-61,共11页
The exploration of building detection plays an important role in urban planning,smart city and military.Aiming at the problem of high overlapping ratio of detection frames for dense building detection in high resoluti... The exploration of building detection plays an important role in urban planning,smart city and military.Aiming at the problem of high overlapping ratio of detection frames for dense building detection in high resolution remote sensing images,we present an effective YOLOv3 framework,corner regression-based YOLOv3(Correg-YOLOv3),to localize dense building accurately.This improved YOLOv3 algorithm establishes a vertex regression mechanism and an additional loss item about building vertex offsets relative to the center point of bounding box.By extending output dimensions,the trained model is able to output the rectangular bounding boxes and the building vertices meanwhile.Finally,we evaluate the performance of the Correg-YOLOv3 on our self-produced data set and provide a comparative analysis qualitatively and quantitatively.The experimental results achieve high performance in precision(96.45%),recall rate(95.75%),F1 score(96.10%)and average precision(98.05%),which were 2.73%,5.4%,4.1%and 4.73%higher than that of YOLOv3.Therefore,our proposed algorithm effectively tackles the problem of dense building detection in high resolution images. 展开更多
关键词 high resolution remote sensing image Correg-YOLOv3 corner regression dense buildings object detection
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Multi-hazard performance assessment of a transfer-plate high-rise building 被引量:3
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作者 Xiangming Zhou 徐幼麟 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2007年第4期371-382,共12页
Many urban areas are located in regions of moderate seismicity and are subjected to strong wind. Buildings in these regions are often designed without seismic provisions. As a result, in the event of an earthquake, th... Many urban areas are located in regions of moderate seismicity and are subjected to strong wind. Buildings in these regions are often designed without seismic provisions. As a result, in the event of an earthquake, the potential for damage and loss of lives may not be known. In this paper, the performance of a typical high-rise building with a thick transfer plate (TP), which is one type of building structure commonly found in Hong Kong, is assessed against both earthquake and wind hazards. Seismic- and wind-resistant performance objectives are first reviewed based on relevant codes and design guidelines for high-rise buildings. After a brief introduction of wind-resistant design of the building, various methodologies, including equivalent static load analysis (ESLA), response spectrum analysis (RSA), pushover analysis (POA), linear and nonlinear time-history analysis (LTHA and NTHA), are employed to assess the seismic performance of the building when subjected to frequent earthquakes, design based earthquakes and maximum credible earthquakes. The effects of design wind and seismic action with a common 50-year return period are also compared. The results indicate that most performance objectives can be satisfied by the building, but there are some objectives, such as inter-story drift ratio, that cannot be achieved when subjected to the frequent earthquakes. It is concluded that in addition to wind, seismic action may need to be explicitly considered in the design of buildings in regions of moderate seismicity. 展开更多
关键词 multi-hazard performance-based design SEISMIC moderate seismicity WIND pushover analysis transferplate high-rise building
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Evaluation of Radon Indoor Pollution Risk in High Efficiency Energy Buildings
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作者 Giovanni Zannoni Jacopo Gaspari 《Journal of Civil Engineering and Architecture》 2017年第8期757-768,共12页
The target of achieving high energy efficiency standard in order to comply with the EU Directives is leading to remarkable efforts to improve the performance of the building envelope. Excellent thermal insulation and ... The target of achieving high energy efficiency standard in order to comply with the EU Directives is leading to remarkable efforts to improve the performance of the building envelope. Excellent thermal insulation and airtight sealing of leakages are of the utmost importance to fulfil the expected targets. Unfortunately, airtightness produces the negative effect of increasing the indoor concentration of air pollutants like radon. Despite the seriousness of the problem is generally misconceived, long-term exposition to radon is acknowledged to be the second cause of lung cancer after smoke. The paper outlines the implications for the building sector and focuses on design and preventive criteria as well as on mitigation and remedial techniques. 展开更多
关键词 Indoor quality indoor pollution RADON high efficiency energy buildings design criteria.
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Evaluation of Disaster Risks, Vulnerabilities and Response Strategies of High Rise Buildings in Lagos Municipality
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作者 Isa Hassan-Enua Mshelgaru Kabir Bala 《Journal of Civil Engineering and Architecture》 2013年第4期422-432,共11页
Although disasters can occur anywhere, certain types of disasters are more likely to have more effects on some buildings than others, especially on those in urban areas. Buildings in Lagos have had nasty experiences f... Although disasters can occur anywhere, certain types of disasters are more likely to have more effects on some buildings than others, especially on those in urban areas. Buildings in Lagos have had nasty experiences from both natural and artificial disasters, claiming lives and properties in the past. This study aims at evaluating the disaster risks, vulnerabilities and response strategies in the high rise buildings in Lagos municipality. Structured questionnaire was administered to building owners, estate managers and disaster managers who manage the high rise buildings. The information obtained was supplemented by personal interviews conducted with tenants and rescue organizations. The study identified collapse of building, fire out break, and communication and power failure as the most likely potential disasters, power failure and collapse had the highest severity of impact, and the degree of preparedness achieved to confront the disasters was below satisfaction. However, the specific status of the response strategies was as expected, but there was room for improvements. The potential disasters were natural, human and environmental and the most vulnerable sectors were other properties rather than the high rise buildings themselves. The magnitude of risk levels could be contained with the level of response strategies already achieved if coordinated. 展开更多
关键词 high rise building disaster preparedness RISK vulnerabilities and response strategies.
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The Numerical Simulation of Recoil Caused by Blasting Demolition of High Buildings
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作者 ZHONG Dong-wang, HUANG Zhi-qiang (College of Science , Wuhan University of Science and Technology, Wuhan 430081,China) 《爆破》 CSCD 2003年第2期6-9,共4页
On the basis of recoil in the process of blasting demolition of high buildings, this thesis applies dynamics theory to predict whether the phenomena of recoil will occur or not by simulation and calculation of the rec... On the basis of recoil in the process of blasting demolition of high buildings, this thesis applies dynamics theory to predict whether the phenomena of recoil will occur or not by simulation and calculation of the recoil and the pressure suffered from the rudimental supporter in the process of demolition. The criterion of recoil relies on whether recoil can be overcome by the intensity of reservation or friction. To take the obliquity as increment, and to calculate the recoil and the pressure suffered from the rudimental supporter in correspondence with the every obliquity in the demolition by VC program, the relation curve can be obtained between recoil and obliquity. By means of examples testified with programs, the obtained results are consistent with those of practice. 展开更多
关键词 高层建筑 爆破破坏 数值模拟 后坐力 动力学理论
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High-rise building fire pre-warning model based on the support vector regression 被引量:1
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作者 张立宁 张奇 安晶 《Journal of Beijing Institute of Technology》 EI CAS 2015年第3期285-290,共6页
Aiming at reducing the deficiency of the traditional fire pre-warning algorithms and the intelligent fire pre-warning algorithms such as artificial neural network,and then to improve the accuracy of fire prewarning fo... Aiming at reducing the deficiency of the traditional fire pre-warning algorithms and the intelligent fire pre-warning algorithms such as artificial neural network,and then to improve the accuracy of fire prewarning for high-rise buildings,a composite fire pre-warning controller is designed according to the characteristic( nonlinear,less historical data,many influence factors),also a high-rise building fire pre-warning model is set up based on the support vector regression( SV R). Then the wood fire standard history data is applied to make empirical analysis. The research results can provide a reliable decision support framework for high-rise building fire pre-warning. 展开更多
关键词 high-rise buildings fire composite fire pre-warning systemdesign the support vector regression pre-warning model
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A FRAMEWORK FOR APPLICATION OF SYSTEM ENGINEERING PROCESS MODELS TO SUSTAINABLE DESIGN OF HIGH PERFORMANCE BUILDINGS
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作者 Thomas F.Bersson Thomas Mazzuchi Shahram Sarkani 《Journal of Green Building》 2012年第3期171-192,共22页
Building owners,designers and constructors are seeing a rapid increase in the number of sustainably designed high performance buildings.These buildings provide numerous benefits to the owners and occupants to include ... Building owners,designers and constructors are seeing a rapid increase in the number of sustainably designed high performance buildings.These buildings provide numerous benefits to the owners and occupants to include improved indoor air quality,energy efficiency,and environmental site standards;and ultimately enhance productivity for the building occupants.As the demand increases for higher building energy efficiency and environmental standards,application of a set of process models will support consistency and optimization during the design process.Systems engineering process models have proven effective in taking an integrated and comprehensive view of a system while allowing for clear stakeholder engagement,requirements definition,life cycle analysis,technology insertion,validation and verification.This paper overlays systems engineering on the sustainable design process by providing a framework for application of the Waterfall,Vee,and Spiral process models to high performance buildings.Each process model is mapped to the sustainable design process and is evaluated for its applicability to projects and building types.Adaptations of the models are provided as Green Building Process Models. 展开更多
关键词 Sustainable Design high Performance buildings Systems Engineering Process Models Waterfall Model Vee Model Spiral Model Integrated Design Process
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Influence of Horizontal Flow on Atrium in High-Rise Residential Building
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作者 LI Nian-ping,LI Jing,HE Dong-yue,ZHANG Min-hui,HOU Su-juan(College of Civil Engineering,Hunan University,Changsha,Hunan 410082,China) 《湖南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2009年第S1期15-18,共4页
In this study a 10-storied residential building model was employed to clarify the ventilation characteristics of the atrium and the rooms,which were effected by the different forms of lateral openings.The experiment w... In this study a 10-storied residential building model was employed to clarify the ventilation characteristics of the atrium and the rooms,which were effected by the different forms of lateral openings.The experiment was conducted under the combined effect of wind force and thermal buoyancy,and the similarity requirements were satisfied.The results have shown that the different forms of lateral openings cause the different ventilation effect of the building,and also have some certain regularity.The conclusions provide a theoretical foundation for how to use the ventilation of atrium better in high-rise residential building. 展开更多
关键词 high-rise RESIDENTIAL building ATRIUM model EXPERIMENT HORIZONTAL flow NATURAL ventilation
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Study on the Application of Industrial Style Design in Railway Station Buildings along the Zhengzhou-Wanzhou High Speed Railway
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作者 LU Yong 《Chinese Railways》 2022年第1期60-66,共7页
With the improvement of economy and living quality,station buildings of high speed railway are no longer just a space to filfill the transport finction.As a business card of cities,station buildings of high speed rail... With the improvement of economy and living quality,station buildings of high speed railway are no longer just a space to filfill the transport finction.As a business card of cities,station buildings of high speed railway prefer unique interior design,so the industrial style design featuring simplicity and variety gradually becomes a design trend.Taking the interior design of Changgebei Railway Station and Fangcheng Railway Station as an example,the paper analyzes the application of the industrial style design to high speed railway station buildings in three aspects:project overview,interior design and key issues of construction,and then reflects on and sums up the advantages and disadvantages of the design and construction.The two station buildings,among a very small quantity of station buildings nationwide where the industrial style design is adopted,provide experience and lessons while exploring a new direction for fiuture interior design of station buildings of high speed railway. 展开更多
关键词 Zhengzhou-Wanzhou HSR industrial style design high speed railway station building Fangcheng Railway Station Changgebei Railway Station suspended ceiling
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Simulation on spread of fire smoke in the elevator shaft for a high-rise building
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作者 Yunchun Xia 《Theoretical & Applied Mechanics Letters》 CAS 2014年第3期80-85,共6页
Spread of fire smoke in the elevator shaft of a high-rise building is influ- enced by many driving facts. We simulate smoke spreading in the elevator shaft, stair room, and pre-chamber with and without different suppl... Spread of fire smoke in the elevator shaft of a high-rise building is influ- enced by many driving facts. We simulate smoke spreading in the elevator shaft, stair room, and pre-chamber with and without different supplied pressurized air. The simulation shows that smoke moves very fast in the elevator shaft. When a 12 floor high-rise building is in fire, smoke can fill up the elevator shaft in less than 1.5 min after a fire started, temperature in the elevator shaft can be higher than 187℃ in 5 rain, and the concentration of CO can also reach a high level. The elevator shaft has a very low visibility in less than about 100 s. 展开更多
关键词 high-rise building elevator shaft stair room smoke spread
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