浅谈混凝土现浇楼板裂缝的控制及处理

在建筑施工中,现场浇注的混凝土楼板常常会出现大小不等,深浅不一的裂缝现象,文章通过分析现浇混凝土楼板常见裂缝的表现状况,揭示了裂缝产生的原因,并且提出了如何控制预防和处理的根本性措施。     

钢筋混凝土现浇空心板桥静载试验

本文采用Midas/civil有限元分析软件,通过建立26m宽钢筋混凝土现浇空心板梁格模型,通过桥梁荷载试验分析桥跨结构强度、刚度等力学性能指标,检验桥跨结构的承载能力是否满足设计活载使用要并考查桥梁实际工作状况,为桥梁运营、养护和管理提供科学依据。     

浅谈现浇混凝土楼板裂缝的防治

本文通过分析现浇混凝土楼板裂缝产生原因,提出几点防治措施。     

高层剪力墙结构体系现浇楼板挠度计算

随着高层建筑的日益增多,工程建设中因各种原因经常会遇到高层剪力墙结构体系四边嵌固现浇楼板挠度计算等问题。在开发哈市群力新区的工程建设中,根据弹性力学中的板壳理论提出将其转化成交叉板带体系进行简化计算,以解决工程实际问题。     

现浇框架柱电动滑模施工

现浇框架柱滑模施工中，对工程设计的要求必须建筑平面应尽可能一致，工程施工的要求应尽可能一次滑动施工完成，这样才能实现施工机械化，减轻劳动强度。简化施工程序，加快施工进度，改善施工条件，提高工程质量，降低工程成本。     

现浇混凝土结构的施工要点

重点介绍现浇混凝土结构施工中常遇的质量问题,在分析其成因的基础上,提出相应的施工要点和质量控制措施.     

浅谈现浇聚苯保温屋面及施工技术

阐述了现浇聚苯复合材料应用于屋面的保温结构,介绍了聚苯复合材料的设计等要求,探讨了主要的施工工艺及方法.     

住宅楼现浇楼板产生裂缝的原因和防治方法

简要介绍了住宅楼现浇楼板产生裂缝的原因和防治方法.     

Exothermic process of cast-in-place pile foundation and its thermal agitation of the frozen ground under a long dry bridge on the Qinghai-Tibet Railway

A number of dry bridges have been built to substitute for the roadbed on the Qinghai-Tibet Railway, China. The aim of this study was to investigate the exothermic process of cast-in-place （CIP） pile foundation of a dry bridge and its harm to the stability of nearby frozen ground. We present 3D heat conduction functions of a concrete pile and of frozen ground with related boundaries. Our analysis is based on the theory of heat conduction and the exponent law describing the adiabatic temperature rise caused by hydration heat. Results under continuous and initial conditions were combined to establish a finite element model of a CIP pile-frozen ground system for a dry bridge under actual field conditions in cold regions. Numerical results indicated that the process could effectively simulate the exothermic process of CIP pile foundation. Thermal disturbance to frozen ground under a long dry bridge caused by the casting temperature and hydration heat of CIP piles was substantial and long-lasting. The simulated thermal analysis results agreed with field measurements and some significant rules relating to the problem were deduced and conclusions reached.