高层建筑倾斜度对抗震能力的影响

Influence of high-rise building tilt on its seismic performance

分析计算了在地面的振动波作用下,钢筋混凝土框架结构高层住宅楼的楼体倾斜角θ背侧的混凝土框架产生范性改变的趋势,以及倾斜角θ的增大与加速趋势;定性分析了楼房的地基出现的不对称塑性沉降。由此得出结论:楼体在强震中的抗震能力与震前楼房倾斜角的变化有明显关系。因此,对楼房的倾斜角进行实时监测是非常必要的。

In this paper the plastic changes in concrete frame, the increasing and speeding up tendency of slope angle θ are analyzed and calculated which were produced under the effect of ground vibration wave by tilt of high- rise residential buildings of reinforced concrete frame on the back side of tilt angle θ. The asymmetric plastic settlement of building foundation was analyzed as well. The conclusions are:the seismic capacity of buildings in big earthquakes is related to the change of the slope angle. Therefore,it is necessary to monitor the tilt angle in real time.