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近十几年来,我国部分地区频繁发生较大地震,在有关的震害调查报告中发现,单层工业厂房有许多柱头破坏的情况。最近,我们针对这个问题在天津地区一些厂房柱破坏较为严重的工厂及有关单位进行了一次实地调查,并模拟柱头受力状况对其混凝土内部应力的分布和钢筋的受力状态进行了弹性阶段三维应力状态下的有限元分析,以便为下一步柱头联接节点的抗震试验提供参考。现将我们初步分析结果简述于后。
In the past decade or so, major earthquakes have frequently occurred in some areas of China. In the investigation report on the earthquake damage, it has been found that single-story industrial plants have a lot of stigma destruction. Recently, we conducted an on-the-spot investigation of this problem in some factories and related units in Tianjin where the plant columns were more severely damaged, and simulated the stress distribution of the stigma and carried out the elastic phase of the stress distribution of the concrete and the stress state of the steel bars. Finite element analysis under stress conditions to provide reference for the next seismic resistance test of column head joints. The results of our preliminary analysis are briefly described hereafter.