Research on Deformation Control Indicators and Standard of Urban Traffic Tunnel Construction Adjacent to High-rise Building

The biggest environmental problem caused by the construction of tunnels adjacent to high-rise buildings is the settlement of buildings.The paper analyzes the influence of tunnel excavation on the deformation of the superstructure and the deformation mode of the superstructure.It introduces the indicators and standards for the construction control of tunnel adjacent to the building at home and abroad.Combined with the Yuzhong tunnel project under construction in Chongqing,the main monitoring indicators and control standards of the Yuzhong Tunnel passing through the main buildings are given after comprehensive analysis and considerations,which provide a reference for the deformation control indicators of similar urban traffic tunnels adjacent to high-rise buildings.

Study on Steel Bar Construction Technology of Frameshear Wall in High-Rise Buildings

The development of the construction sector is rapidly growing,which induce competition at global level.In order to achieve the current economic development,more high-rise buildings construction projects were commenced without considering importance of the land to human and other living organism.On the other hand,the quality and safety aspect of the engineering technology used must be analyzed carefully and to be the primary aim for engineers to reduce any risk of harm in future.Many of the high-rise buildings in China consist of a frame or skeleton of reinforced concrete wall which need to be strengthened with shear walls to improve the stability and safety of the structures.According to practical work experience and relevant theoretical knowledge,the researcher introduced the reinforcement construction technology of frame-shear wall for high-rise buildings in depth from aspects like the arrangement of steel bar,construction preparation,steel bar anchorage,precautions to follow for the related work in future.

Discussion on the Construction of Anti-smoke Construction Technology in Super High-rise Buildings

In recent years with the increasing number of super high-rise buildings and the ever-expanding scale the anti-smoke construction technology has attracted more and more attention.Based on this situation,this paper analyzes the smoke control technology of super high-rise buildings.The paper analyzes the importance of the application of anti-smoke construction technology in super high-rise buildings,analyzes the problems in the construction of smoke control and super high-rise buildings.The anti-smoke construction technology was studied and I hope that it can benefit the application of anti-smoke construction technology in high-rise buildings.

The Design and Implementation of High-rise Building Construction Based on GPS Positioning Technology

Baseline observation as well as height measurement is the important content of the quality control of high-rise building construction.In order to strengthen the quality of construction projects,meet the requirement of completion time,improve the accuracy and efficiency of locating observation and explore a scientific way of observation suitable for high-rise building construction,this paper studies the design and implementation of high-rise building construction based on GPS positioning technology.

Impacts of building information modeling(BIM) implementation on design and construction performance: a resource dependence theory perspective

Drawing on resource dependence theory, this paper develops and empirically tests a model for understanding how the implementation of building information modeling(BIM) in construction projects impacts the performance of different project participating organizations through improving their interorganizational collaboration capabilities. Based on two sets of survey data collected from designers and general contractors in BIMbased construction projects in China, the results from partial least squares analysis and bootstrapping mediation test provide clear evidence that BIM-enabled capabilities of information sharing and collaborative decision-making as a whole play a significant role in determining BIMenabled efficiency and effectiveness benefits for both designers and general contractors. The results further reveal that designers and general contractors benefit from project BIM implementation activities significantly nonequivalently, and that this non-equivalence closely relates to the different roles played by designers and general contractors in BIM-enabled interorganizational resource exchange processes. The findings validate the resource dependence theory perspective of BIM as a boundary spanning tool to manage interorganizational resource dependence in construction projects, and contribute todeepened understandings of how and why project participating organizations benefit differently from the implementation of interorganizational information technologies like BIM.

High Strength Low Alloy (HSLA) Steels in Building Construction

Majority of the buildings,including industrial buildings,are constructed using either structural steel (plates and structural shapes) or deformed bar steel reinforced concrete.Such buildings,however,must be designed to be safe and serviceable during construction and during use and occupancy.These objectives can be easily achieved by the use of steels having superior mechanical properties,ductility,weldability,fire resistance,etc.Over the years,the steel industry has made improvements in steel making technologies resulting in high strength low alloy (HSLA) steels with superior steel properties well suited for building construction.First part of this paper presents the structural design considerations,and the constructional considerations associated with the building structures in general,and steel structures in particular.This second part of the paper looks at the acceptance criteria for HSLA steels for North American building codes and construction.The third part of the paper presents the structural properties of currently available HSLA steels for building construction.The discussion focuses on hot-rolled structural steel shapes as well as deformed steel bars for concrete reinforcement.The paper argues that Niobium microalloying is the key to achieving superior properties in such steels.

百年文物宏恩医院隔震和顶升一体化研究

城市更新过程中文物建筑作为历史留存多被赋予新的使命,但在修缮改造中抗震加固由于范围广对文物建筑保护影响很大。对于位于高烈度区或者抗震安全需求高的文物建筑,需要合理解决建筑保护和抗震安全之间的矛盾。宏恩医院是上海市文物保护建筑,建成至今一直作为医疗场所使用,属抗震重点设防类建筑,但原结构存在体型不规则、结构转换、抗震承载力严重不足等多项抗震不利情况。为此,在文物保护基础上,对文物建筑抗震性能目标的确立、抗震加固方案比选、软土地基上隔震布置及效果评估、结构顶升阶段的安全控制以及隔震和顶升施工的结合等多个关键技术进行介绍。通过隔震顶升一体化和性能化设计实现了文物建筑抗震安全和最小干预的保护要求,对文物建筑的可持续利用和抗震韧性具有借鉴意义。

装配式模块化建筑研究进展

模块化建筑是在工厂预制并对模块内部进行装饰完成,然后运输至施工现场进行吊装并通过可靠的连接最终形成建筑整体。与传统建筑相比,模块化建筑具有施工周期短、资源浪费少、施工过程安全及低碳循环发展等优点。对模块建筑关键节点的分类及力学性能研究进行了梳理,提出全螺栓节点具有大力推广的优势;综述了模块化钢框架试验和数值模拟的研究现状,认为应对于整体结构根据传力机理进行模型简化分析,准确探究其整体结构的抗震性能。

大型露天建筑绿色施工扬尘污染治理方法研究

扬尘对人体和周边环境都具有很大的危害。为实现绿色施工,进行扬尘污染治理是十分必要的,因此研究一种大型露天建筑绿色施工扬尘污染治理方法。该研究从白果中提取纤维素并制备成纳米纤维素,再制成纳米纤维素抑尘剂。将纳米纤维素抑尘剂喷洒到地面,固化后实现扬尘污染治理。根据是否喷洒抑尘剂,设置实验组和对照度,实施吸湿保水性能测试和风蚀性能测试,结果表明:实验组吸湿强度更高、保水率更大,土样质量损失率、TSP浓度更大,说明纳米纤维素抑尘剂喷洒能够保持土样湿润性,增强了土样的抗风蚀性能,起到了扬尘污染治理的效果。

精细化施工技术在高层建筑施工中的应用探讨

随着城市高楼建筑的增多,高层建筑施工的质量与安全成为焦点。论文探讨了高层建筑施工中混凝土浇注、钢筋工程、模板系统和施工组织等挑战,并提出应用精细化施工技术作为解决方案。这些技术包括使用高强度混凝土、机器连接钢筋和高效模板系统,旨在确保高层建筑施工的高质量、高承载力和长寿命,同时提升施工安全性和效益。通过实际工程案例,论文验证了精细化施工技术的有效性。研究成果对高层建筑施工实践者具有借鉴与参考价值,有助于他们更好地解决工程技术难题。

浅析绿色建筑材料在住宅中的应用与性能评估

本文就绿色建筑材料在住宅施工中的应用与性能评估展开研究。通过对各种绿色建筑材料在住宅建设中的应用案例进行分析,探讨其在提高建筑能效、减少环境影响、改善室内环境质量等方面的作用。同时,对绿色建筑材料的性能评估方法进行了概述,并重点讨论了其在施工过程中的实际应用效果。研究结果表明,合理选择和应用绿色建筑材料有助于提高住宅建筑的可持续性和环保性,为建筑行业的可持续发展提供了重要参考依据。

预应力混凝土在高层建筑中的应用及施工图审查关键点

文章综合探讨了预应力混凝土在高层建筑中的应用及其在施工图审查过程中的关键考虑因素。首先简要介绍了预应力混凝土技术的基本原理及其在现代高层建筑中的重要性;其次,通过分析四川地区的具体案例,详细阐述了预应力混凝土在高层建筑项目中的实际应用,突出其在提高结构稳定性、减轻结构重量和提高空间利用率方面的优势;再次,重点讨论了施工图审查中的关键点,包括设计准则、施工细节和质量控制等方面,为工程设计和施工提供了实用的参考;最后,文章总结了预应力混凝土在高层建筑应用中面临的挑战,并提出了相应的解决策略,为未来相关研究和实践提供了方向。

应变速率对建筑结构用钢高温热塑性的影响

高性能建筑用钢可有效提升材料力学性能,研究中对材料的高温热塑性进行了分析,选择通过热模拟和显微观察方式研究低合金高性能建筑结构用钢在不同应变速率下的变化情况。研究结果表明:在10-3s-1低应变速率下,充足的变形时间导致铁素体析出量更多,从而出现了塑性低谷;在10s-1应变速率下,塑性低谷随即消失,在1 000℃~1 200℃范围内,断面收缩率随温度提高而逐渐降低,热塑性变形得到明显改善。

高速铁路站房新型开放式铝板幕墙施工关键技术分析

建筑幕墙施工中,如果采用传统的施工技术方法会存在一些弊端,比较多见的是幕墙变黑发黄或者胶缝出现老化现象等,不仅幕墙结构安全性无法保证,而且缺乏美观度,这就需要积极引进创新工艺技术。本文以高速铁路站房幕墙工程为例,应用BIM建模方法,能够有效减少铝板尺寸误差,并在安装骨架、防水背板、面板等操作中采用新型开放式铝板幕墙施工技术,以提高施工质量,确保幕墙结构安全系数高,且极具美观性。本文对高速铁路站房工程的施工过程进行了简要论述,分析新型开放式铝板幕墙施工所具备的特点。

混凝土模块化高层住宅建筑结构设计与分析

近年来,装配式建筑技术体系不断取得改进与创新,模块化集成建筑成为了装配式建筑的重要发展方向之一。基于国内首个高度近100 m的混凝土模块化高层住宅项目,介绍其MiC技术应用创新,分析了混凝土集成模块对结构的刚度影响,并对结构进行抗震性能分析。结果表明结构设计时取周期折减系数为0.8来考虑模壳对结构刚度的影响是合适的;大震作用下剪力墙基本无损伤,大部分连梁达到重度损伤状况,满足结构性能目标;在核心筒四周及弱连接部位的楼板拉应力相对其它区域楼板拉应力较大,设计时楼板需要加强;弱连接楼盖在考虑构造加强的设计情况下可以满足结构承载力要求。

超高性能混凝土的研究现状

随着生活水平的不断提升及建筑业的快速发展,人们对建筑工程提出了更高要求。超高性能混凝土(UHPC)是一种具有轻量化、高强度、优异延展性、超高耐久性及耐磨性等特点的新型水泥基复合材料。土木工程领域应用广泛。文章结合国内外学者对UHPC材料研究现状及其在桥梁工程、建筑工程等方面的研究展开论述。

芮城县房屋建筑抽样详查结果及典型结构抗震性能分析

为摸清山西省芮城县地震灾害风险状况,基于山西省地震灾害风险普查工程,按照抽样相关规范规定,对芮城县房屋建筑开展抽样详查。对本次调查的79栋建筑物进行分析表明,城区中心、乡镇中心的建筑绝大多数结构使用功能正常;郊区、农村地区个别老旧建筑出现墙体腐蚀剥落、地基不均匀沉降,多数土木结构墙体开裂,地基不均匀沉降。根据详查结果,对该地区典型结构房屋建筑的抗震性能进行分析,并提出相应的地震灾害风险防治建议。

“立足地域环境,性能导向优化”——绿色建筑更新设计教学实践探索

随着可持续理念的日益盛行,综合性绿色设计已成为建筑行业的共识,也是培养学生当代设计观的重要一步,然而在实际教学中理论与技术脱节的问题一直存在。因此,该文结合建筑学专业的绿色建筑课程教学实践,探讨以气候适应性绿建策略为理论支撑、以绿建性能模拟为导向的设计理念及教学路径,并从教学模式、内容设置和成果评价三方面优化教学过程,为社会发展背景下的建筑学绿色建筑课程提供参考。

防辐射建筑材料在医院建设中的应用研究

现代医院中具有大量的电磁机械设备,这会导致院内辐射量过大,为保证工作人员以及院内患者的身体健康,需要在医院的建设时使用防辐射建筑材料。在制备医院用防辐射混凝土的过程中,设计混凝土配置与施工的具体流程,测试该防辐射建筑材料的工作性能、抗压抗折强度、热重损失率以及孔隙性能,同时获取该混凝土的辐射屏蔽效果,在机房门口、操作空间内部、机房东墙、机房西墙、机房南墙、机房北墙、机房顶部7个位置的辐射量分别为0.001、0.012、0.015、0.007、0.014、0.018、0.015μSv/h,均小于2.5μSv/h,可见该防辐射建筑材料在医院基建中确实能够起到应有的防辐射效果。

近零能耗建筑的特殊性分析

近零能耗建筑的健康发展,要建立在对其全面、客观认识和理解的基础上。本研究从宏观、中观和微观3种角度辨析近零能耗建筑相比传统节能建筑的普遍性和特殊性,对于澄清目前一些模糊甚至不正确的认识和观点,建立适宜的技术体系、实施路径,理清规模化发展思路,都有着现实和深远的意义。本研究具体指出了近零能耗建筑和传统节能建筑在指标要求、导向、评价方式、实施方法、性能化设计、精细化施工、策略化运维、计算方法和设计参数等方面的不同之处,其中设计参数(如室内参数、围护结构、气密性、热桥和设备性能等)要求相对提高。对近零能耗建筑的准确认知为建筑领域早日实现碳达峰和碳中和的目标奠定基础。