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一、厂房受震后破坏情况天津某厂地基为软弱土层。1965年施工辅助车间工房面积4440m~2,附房1530m~2,采用(?)型矩形断面天窗架,1976年地震时,垂直支撑大部分连焊缝拉裂,或者安装螺栓被剪断。因而天窗立柱与侧板连接处出现程度不同的裂缝,但未造成倒塌,在整个车间长度84m内,仅在西端上的水平支撑屋面整体刚度尚好,参见图1。
First, damage to the factory building after the earthquake The foundation of a factory in Tianjin is a soft soil layer. In 1965, the auxiliary workshop workshop area was 4440m~2, and the attached house was 1530m~2. The (?) rectangular section sunroof frame was adopted. In the 1976 earthquake, most of the vertical support brazed joints were cracked, or the installation bolts were sheared. As a result, cracks of varying degrees appeared at the connection between the sunroof and the side panels, but they did not collapse. Within the entire 84m length of the workshop, the overall stiffness of the horizontal support roof at the west end was still good, see Figure 1.