摘要
为研究超长混凝土楼板结构的收缩应力以及梁板结构的约束系数,对某工程项目超长楼板结构进行现场试验,监测混凝土楼板应变的变化规律,以及收缩应变在监测期间的最大值.研究发现上部超长混凝土楼板结构的应变受环境温度的影响比较大,会随着环境温度的变化产生波动,应变和温度两者的变化基本是同步的.应用王铁梦的基本理论,经过反算可以得到梁板结构的约束系数,为梁板结构约束系数的取值提供依据.
In order to study the shrinkage stress of super-long concrete floor structure and constraint coefficient of beam-slab structure, a field test is carried out on the structure of a super long floor slab of an engineering project to monitor the variation rule of concrete floor strain and the maximum value of shrinkage strain during the monitoring period. It is found that the strain of the super long concrete floor slab structure is more affected by the ambient temperature, and it fluctuates with the change of the ambient temperature, and the changes of both strain and temperature are basically synchronous. According to the basic theory of Wang's, the constraint coefficient of the beam plate structure can be obtained through the inverse calculation, which provides the basis for the value of the constraint coefficient of the beam plate structure.
作者
冯涛
张同波
许卫晓
于德湖
FENG Tao;ZHANG Tong-bo;XU Wei-xiao;YU De-hu(School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China;Qingjian Group Co. , Ltd. , Qingdao 266071, China)
出处
《青岛理工大学学报》
CAS
2019年第3期18-23,共6页
Journal of Qingdao University of Technology
基金
国家自然科学基金资助项目(51608287
51478231)
关键词
超长楼板
混凝土收缩
约束
super-long floor slab
concrete shrinkage
constraint
