论文部分内容阅读
针对超长隔震结构在温度和收缩效应下的变形问题,实测一个长94.2m的隔震工程,发现该结构在施工期间,部分隔震支座的变形超过安装容许误差。用变形分配法求得该结构在年温差和收缩效应下的变形。结果表明,层间变形主要集中在隔震层处,端部隔震支座的变形最大,且与实测数据相比,计算结果偏于保守。由此以最不利隔震支座在温度和收缩作用下的变形满足容许位移的要求,按建筑物的热工设计区域和建筑使用情况,给出了钢筋混凝土框架隔震结构伸缩缝间距。
Aiming at the deformation problem of the ultra-long isolated structure under the effect of temperature and shrinkage, a 94.2m long seismic isolation project was measured. It was found that the deformation of some isolated bearings exceeded the installation tolerance during the construction. Deformation distribution method was used to determine the deformation of the structure under the effect of annual temperature difference and shrinkage. The results show that the interlaminar deformation mainly concentrates on the isolation layer and the deformation of the end isolation bearings is the largest. Compared with the measured data, the calculation results are conservative. Therefore, the deformation of the most unfavorable isolation bearings under temperature and shrinkage can meet the requirements of allowable displacement. According to the thermal design area and the construction usage of the buildings, the distance between expansion joints of the isolation structure of reinforced concrete frame is given.