Optimized Simulation Design of Double Glass Curtain Wall Shading System in Hot Summer and Cold Winter Zone

The glass curtain wall is widely favored by the owners for its good appearance modeling effect. In using process,however,excessive energy consumption,low level indoor comfort and other problems of glass curtain wall are often exposed. Aiming at office buildings in hot Summer and cold Winter zone,taking the optimization of thermal comfort of double glass curtain wall in the summer and the reduction of building energy consumption throughout the year as the breakthrough point,using the method of energy simulation analysis,through changing the size of internal shading component in the simulated room,this paper analyzes and summarizes the variation law of its energy consumption value,to explore the relatively reasonable design plan of shading systems of the building with glass curtain wall.

Intelligent Construction Technology of Hyperbolic Curtain Wall

Taking the hyperbolic glass curtain wall project of the Wuhan Jinyinhu Commercial Plaza as an example,the characteristics of different curved glass forming technologies were analyzed in this paper.Combined with the actual engineering situation,the curved steel process is selected to produce the hyperbolic glass curtain wall,and the application of BIM technology in the quality control of hyperbolic glass curtain wall in the production process was analyzed,and the effects of heating condition,bending time,cooling condition,and bending tempering error in the manufacturing accuracy of the curved glass curtain wall were studied,in hope that this project can provide practical reference for similar curtain wall design construction in the future.

Nonlinear response spectrums for cable-supported glass curtain walls

Aiming at the seismic-resistant performance of cable-supported glass curtain walls,the methods for formulating nonlinear single degree of freedom system and calculating the nonlinear response spectrums are proposed. Taking pretension effect in cables and geometrical nonlinearity into account,the nonlinear acceleration spectrums are calculated under given conditions,such as site and different seismic fortification intensities. The seismic design response spectrums are developed. During vibrating,varying period due to the influence of pretension effect in cables and geometrical nonlinearity drives the maximum period of plateau in nonlinear response spectrums to move towards the long period zone,and the maximum of seismic effect coefficient is larger than that of current seismic code. The theoretical analysis and the example demonstrate that using the nonlinear response spectrums is safe and economical.

Ecological Technologies of Applying Plants on Glass Curtain Walls

Integrated landscaping technology of reclaiming condensed water from the thermal channel of double-pane glass curtain wall and applying the reclaimed water in micro irrigation of natural plants was explored.Selection of plant species for the internal space of glass curtain wall and vertical greening outside was studied to meet the ecological technological requirements of glass curtain wall.Progressive experiment of new technology and simulated calculation of indexes were applied to obtain solar radiation consumption,meet the ecological characters of plants in glass curtain walls,and finally improve indoor and outdoor thermal environment.The results showed that new ecological technologies of applying plants on glass curtain walls help realize ecological utilization of glass curtain walls,further reduce energy consumption of buildings,achieve and even surpass the standards of national 3-star green buildings.

Discussion on Structure Design and Optimization of Building Curtain Wall

To discuss the structure design and optimization of building curtain wall, the dynamic characteristics of point supported glass curtain wall system are analyzed by the finite element method. The various technologies are made use of, and according to the characteristics of the structure system, the finite element analysis model with steel structure glass plate beam element and shell element as the basic elements is established. Then, the dynamic characteristics are analyzed, and the modal parameters such as inherent frequency and vibration type are identified. The research results show that the node displacement response power spectrum under the load of wind is obtained, which provides the basis for rationally optimizing the structure. Based on the above findings, it is concluded that the optimization design based on finite element model has a wide significance, which is a useful attempt to reduce the blindness of design and has great engineering significance and application value.

Design and Fabrication of Aluminum Cladding and Curtain Wall of a Sports Club

The paper discusses the design, fabrication and the execution of the cladding supported by steel trusses and curtain wall of a sports club. The cladding and the curtain walls were subjected to a wind load of 1.2 Kpa considering basic wind speed of 25 m/s as per the project specifications. The first part of the paper deals with the cladding work of the canopy that consist of a 4 mm thick aluminium composite panels supported by steel trusses extended from the main structure. Two types of steel trusses were provided, the main truss connected to the space truss, whereas the intermediate truss connected to channels. Both trusses were spaced at 2.5 m centre to centre. These trusses were fabricated at factory and transported to the site for installation. The second part of the paper is related to the curtain wall design having Maximum Mullion spacing of 2 m, considered as worst scenario for the design calculations. The maximum Mullion height was 5.55 m, adopted in the calculations with bottom and top pinned connection. The Technal system was adopted for the design of mullions and transoms. Design was carried out using numerical modeling with CSI SAP2000 for cladding and its supporting structures. The bracket was realized and checked for the corresponding induced forces. All the structural systems were found safe according to different acceptance criterion.

Study on Thermal Characteristics of a Novel Glass Curtain Wall System

In order to solve the conflict between indoor lighting and PV cells in building-integrated photovoltaic/thermal(BIPV/T) systems, a glass curtain wall system based on a tiny transmissive concentrator is proposed. This glass curtain wall has a direct influence on the heat transfer between indoor and outdoor, and the operating parameters of air and water inlet temperature, indoor and outdoor temperature, and radiation intensity have a significant influence on the heat transfer characteristics of the glass curtain wall. The 3D model is established by SoildWorks software, and the thermal characteristics of the new glass curtain wall system are simulated through computational fluid dynamics(CFD) method. Thermal performance was tested under actual weather for the winter working conditions. The CFD simulation results are verified by the test results under actual weather. The results show that thermal efficiency simulation results are in good agreement with the experimental results of the new glass curtain wall system. The simulation conditions were designed by using the orthogonal method, and the significance analysis of the influencing factors of the indoor wall surface heat gain was carried out. With the increase of the bottom heat flux and the air velocity, the heat absorption of the inner wall surface increases. When the wind speed is 0.1 m/s, the heat flow on the bottom surface rises from 500 W/m^(2) to 2500 W/m^(2), and the heat flow intensity on the interior wall changes from 10.31 W/m^(2) to -29.12 W/m^(2). Under typical working conditions, the new glass curtain wall system can reduce the indoor heat load by 47.5% than ordinary glass curtain wall.

Hydraulic Modeling of A Curtain-Walled Dissipater by the Coupling of RANS and Boussinesq Equations

A hybrid numerical method for the hydraulic modeling of a curtain-walled dissipater of reflected waves from breakwaters is presented. In this method, a zonal approach that combines a nonlinear weakly dispersive wave (Boussinesq-type equation) method and a Reynolds-Averaged Navier-Stokes (RANS) method is used. The Boussinesq-type equation is solved in the far field to describe wave transformation in shallow water. The RANS method is used in die near field to resolve the turbulent boundary layer and vortex flows around the structure. Suitable matching conditions are enforced at the interface between the viscous and the Boussinesq region. The Coupled RANS and Boussinesq method successfully resolves the vortex characteristics of flow in the vicinity of the structure, while unexpected phenomena like wave re-reflection are effectively controlled by lengthening the Boussinesq region. Extensive results on hydraulic performance of a curtain-walled dissipater and the mechanism of dissipation of reflected waves are presented, providing a reference for minimization of die breadth of the water chamber and for determination of the submerged depth of the curtain wall.

Effects of a liquid lithium curtain as the first wall in a fusion reactor plasma

This paper explores the effect of a liquid lithium curtain on fusion reactor plasma, such curtain is utilized as the first wall for the engineering outline design of the Fusion Experimental Breeder （FEB-E）. The relationships between the surface temperature of a liquid lithium curtain and the effective plasma charge, fuel dilution and fusion power production have been derived. Results indicate that under normal operation, the evaporation of liquid lithium does not seriously affect the effective plasma charge, but effects on fuel dilution and fusion power are more sensitive. As an example, it has investigated the relationships between the liquid lithium curtain flow velocity and the rise of surface temperature based on operation scenario II of the FEB-E design with reversed shear configuration and high power density. Results show that even if the liquid lithium curtain flow velocity is as low as 0.5 m/s, the effects of evaporation from the liquid lithium curtain on plasma are negligible. In the present design, the sputtering of liquid lithium curtain and the particle removal effects of the divertor are not yet considered in detail. Further studies are in progress, and in this work implication of lithium erosion and divertor physics on fusion reactor operation are discussed.

钢幕墙“POSN STEEL WALL”结构性能试验及评价

玻璃装饰外墙的幕墙具有外观华丽、施工维护方便等优点,目前得到了广泛应用。作为幕墙外墙的玻璃框架,主要采用重量轻、加工方便的铝材制作。韩国钢制幕墙(POSN STEEL WALL)由高耐腐蚀性合金镀层钢板制作而成,具有优异的结构性能,可承受压缩、拉伸和弯曲载荷,无需加固即可安装,且其强度大于铝材,可用于薄型框架制作。通过开展全尺寸钢幕墙POSN STEEL WALL的结构性能试验,并将试验结果应用于实际项目,分析其施工性能。

建筑幕墙装饰装修工程施工探讨

在当前建筑工程及技术水平高度发展的背景下,大众对各种建筑的功能性、装饰性与实用性的需求有所增高。这一点在建筑幕墙装饰装修工程中体现得十分明显。对此,通过探讨建筑幕墙工程施工中影响工程质量、工程效率的关键因素,总结能够用于建筑幕墙装饰装修工程的关键技术,提高工程建设效果的有效方法。

西安国际文化传播中心大跨斜幕墙支承结构设计

西安国际文化传播中心大跨斜幕墙支承采用竖向张弦桁架结构体系,结构造型独特新颖。对其结构选型和受力特点进行了重点介绍。采用MIDAS Gen软件建立有限元模型,进行非线性静力及抗震分析计算,同时采用ANSYS软件对考虑几何与材料双重非线性的结构整体稳定性进行了详细分析,探讨了安全系数取值等。分析结果及实际使用效果表明,幕墙支承满足正常使用的各项要求,并具有良好的抗震性能。

Discussion on Dust Removal(Suppression)System of Crushing Station in Open-Pit Coal Mine

This paper introduces the method of coal dust treatment in crushing station and the present situation of dust removal system in typical open-pit coal mine crushing station in China,and expounds the research idea of determining comprehensive dust removal(suppression)system in crushing station inspired by the working principle of"range hood".Based on the design example and link optimization of the crush-ing station of open-pit coal mine I of Thar coalfield,this paper finally draws some conclusions on the key technologies of dust removal(suppression)system of open-pit coal mine crushing station.This study has certain reference value for the technical innovation of dust removal(suppression)system in crushing station,the realization of green mining in"crushing link",and the reduction and avoidance of ecological environment pollution in mining area.

光伏建筑一体化光伏幕墙体系与经济性研究

在当今全球能源转型的大背景下,建筑行业作为主要能源消费领域,其能源消费模式的革新对于实现国家层面的可持续发展目标至关重要。鉴于此,显著削减建筑领域对化石燃料的依赖,并积极拓宽可再生能源的利用渠道,成为了推动绿色建筑革命的重要策略。光伏建筑一体化(BIPV)技术,作为一种将高效光伏发电系统与现代化建筑设计、建造工艺深度融合的创新实践,不仅展现了太阳能这一清洁、可再生资源的巨大应用潜力,而且也预示着未来建筑领域在能源自给自足方面广阔的发展蓝图。为了探究光伏建筑一体化的现状,文章对光伏建筑一体化的背景及常用的应用场景进行研究,通过案例分析光伏幕墙增量成本,并采用静态投资回收期和效益费用比两个参数对薄膜类光伏幕墙、晶硅类光伏幕墙、薄膜类光伏采光顶三种光伏方案的经济性进行分析,为后续光伏建筑一体化中光伏幕墙的经济性提供参考。

17m超高坐地式玻璃肋幕墙系统结构性能和试验研究

文章以泰康大厦工程为背景,针对超高坐地式玻璃肋幕墙系统进行了大风压作用下的结构性能和位移能力试验研究,通过有限元、试验、理论三者进行对比分析。研究表明,该幕墙系统不仅满足1.75kPa风压作用下的结构性能要求和2.63kPa大风压下结构的安全性能要求,而且满足三个方向位移能力的要求。充分说明17m超高坐地式玻璃肋幕墙系统的设计方案安全可行,设计方案和试验结果可为今后超高坐地式玻璃肋幕墙系统的设计提供支持。

玻璃幕墙清洗机器人内螺旋完全遍历路径规划研究

针对高空复杂环境下玻璃幕墙清洗机器人的全方位无死角清洗问题,本文提出了一种基于改进蚁群算法的内螺旋完全遍历路径规划方法。首先在融合视觉传感器识别定位结果的基础上构建环境栅格地图;针对机器人全方位无死角遍历问题,以最大覆盖面积、最小重复路径及最大安全性为目标,通过内螺旋完全遍历算法实现清洗路径规划。在此基础上,针对机器人完全遍历易陷入死区问题,以最快规划、最少拐点及最快收敛为目标,通过改进蚁群算法规划出最优逃逸死区路线。改进方向以机器人4方位4领域移动为主,在启发函数中引入A^(*)算法的代价函数,同时在信息素更新中引入惩罚函数的思想。最后通过2种算法结合完成清洗区域的完全遍历,仿真结果表明:机器人在已知地图上通过4次规划后清洗覆盖率达到100%,行进重复率达到3.15%,实现了完全遍历。

建筑幕墙密封用多孔硅酮密封胶的制备及保温性能研究

以硅橡胶为基料,多孔硅藻土为填料,制备建筑幕墙密封用多孔硅酮密封胶,并研究其保温性能。结果表明:在一定程度上增大多孔硅藻土用量和延长养护时间会增大多孔硅酮密封胶的表观密度,当多孔硅藻土用量为15份、养护时间为14 d时多孔硅酮密封胶的表观密度较大,孔隙结构调控到了相对较佳状态,保温性能较好;过度延长养护时间、采用水光试验箱养护方式和增大含水率会增大多孔硅酮密封胶的热导率,降低保温性能,当普通养护1~10 d时多孔硅酮密封胶的热导率较小,具有较为理想的保温效果。

超高层单元幕墙弹出式插芯节点设计及应用

单元幕墙已经成为超高层建筑外围护结构的主流形式,采用插接节点,在安装过程中必须按楼层逐层插接安装,为此提出超高层建筑单元幕墙多段同步施工技术。该技术通过将分段施工收口楼层单元板块的插接式节点设计为弹出式插芯节点,解决了单元幕墙必须按楼层逐层插接安装的工序问题,实现单元幕墙的分段同步施工。分析了超高层单元幕墙弹出式插芯节点设计、技术原理、工艺流程和安装要点,并结合工程案例,对采用弹出式插芯节点的超高层建筑单元幕墙多段同步施工技术和工程应用进行探讨。

某高层建筑幕墙玻璃面板的多源感知与特征提取初探

近年来,高层建筑玻璃幕墙面板因自爆、脱落等引发的安全事故在我国频频发生,其主要原因是幕墙面板的性能特征不清晰。论文提出了玻璃幕墙面板的多源感知与特征值提取方法,结合实际工程案例,通过设计施工资料、振动测试、图像识别3种多源感知方法获取玻璃幕墙特征信息,并从中提取出典型特征值。

基于BIM技术的幕墙预埋件精准定位与安装技术

幕墙预埋件是幕墙系统与主体结构连接的关键受力部件,其预埋位置和安装质量直接影响幕墙系统的受力性能和立面造型。以深圳市新华医院项目为案例,将幕墙专业与结构专业的BIM模型融合,建立了钢筋-混凝土-预埋件综合性BIM模型,优化了幕墙预埋件定位,有效避免了安装过程的位置冲突,针对不同类型构件,分别提出了平板式预埋件和板槽式预埋件的安装方法,提高了幕墙预埋件施工质量和安装效率,减少了因材料浪费和返工造成的经济损伤和工期延误。