某钢-混结构楼板在荷载试验下的裂缝分析  

Analysis of Cracks of a Steel-Concrete Structure Floor under the Loading Test

作　　者：刘有军 董桂红[1,2,3] 王纪伟 LIU You-jun;DONG Gui-hong;WANG Ji-wei(Yunnan Key Laboratory of Building Structure and New Materials,Kunming 650223,China;Kunming Key Laboratory of Building Structure Safety and New Technology,Kunming 650223,China;Yunnan Institute of Building Research,Kunming 650223,China)

机构地区：[1]云南省建筑结构与新材料企业重点实验室,昆明650223 [2]昆明市建筑工程结构安全和新技术重点实验室,昆明650223 [3]云南省建筑科学研究院,昆明650223

出　　处：《价值工程》2019年第17期121-124,共4页Value Engineering

摘　　要：楼板裂缝是钢-混结构中常见的通病之一。楼板裂缝会引起渗漏,降低建筑的抗渗能力,影响建筑物的使用功能。同时还会引起钢筋的锈蚀,降低材料耐久性,影响建筑物的承载能力,降低建筑的使用寿命。以某钢-混结构的楼板为例,进行现场荷载试验,记录楼板裂缝变化、楼板和钢梁的挠度以及楼板和钢梁的动态响应。分析裂缝对结构产生的影响,并提出处理建议。Floor cracks are one of the common diseases in steel-concrete structures. Floor cracks can cause leakage, reduce the building's permeability, and affect the use of buildings. Cracks will also cause corrosion of steel bars, reduce the durability of materials, and affect the bearing capacity of buildings. Cracks would reduce the useful life of buildings. Taking the floor of a steel-concrete structure as an example, the loading test is carried out to record changes of floor cracks, and the deflection of floor and steel beams are also recorded. The dynamic response of floor and steel beams are tested. The influence of cracks on structure is analyzed, and some suggestions are put forward.

关 键 词：混凝土楼板 钢梁 裂缝 荷载试验 

分 类 号：TU375.2[建筑科学—结构工程]