前言 渡口市位于四川金沙江与雅砻江汇合处,地震基本烈度为七度。该市依山沿金沙江建于稳定的砂岩地基上,属Ⅰ、Ⅱ类场地土。由于渡口市建设初期对民用建筑未考虑抗震设防,同时建筑标准普遍偏低,施工质 Foreword The city of Dukou is located at the confluence of the Jinsha River and the Yalong River in Sichuan. The earthquake has a basic intensity of seven degrees. The city is located along the Jinsha River on a stable sandstone foundation and belongs to Class I and II site soil. Due to the lack of seismic fortification of civil buildings at the beginning of the construction of Dukou City, the construction standards were generally low and construction quality