基于峰值速度的生土围护墙倾倒限值分析

Collapsing Limit Analysis of Surrounding Earth Wall Based on Peak Velocity

目前农村存在大量生土墙围护的木结构房屋,此类房屋特别是围护墙体在历次地震中受灾非常严重。为了避免墙体在不同地震烈度下发生倾覆倒塌,基于峰值速度,通过简化力学模型对生土围护墙在地震中倾覆倒塌的破坏机理进行分析,得出不同地震烈度下其高厚比的限值。与用加速度值对生土围护墙倾倒高厚比限值的分析结果进行对比,分析存在的差异与原因,得出符合实际的高厚比限值。对于避免生土墙体在不同地震烈度下发生倾覆倒塌具有一定的参考意义。

In rural areas there are a large number of houses which are usually made of timber frame with surrounding earth walls.This kind of houses,especially the retaining walls collapsed grievously during the previous earthquakes.In order to avoid the collapse of surrounding earth walls under different seismic.The damage mechanism is studied based on peak velocity by simplifying the mechanical model of retaining wall collapsed out-of-plane during the earthquake,and height-width ratio limits suffering different seismic are obtained.Realistic height-width ratio limits are obtained by comparing the results calculated by acceleration rate on retaining wall and analyzing the varies and causes.The results would have some referenced meaning for avoiding the collapse of surrounding earth walls under different seismic.