漾濞M_(S)6.4地震中土木结构房屋抗震加固效果研究

Seismic reinforcement performance of civil structure houses during Yangbi M_(S)6.4 earthquake

对漾濞6.4级地震灾区开展土木结构房屋加固情况与破坏形式调查。从云南相近震级地震破坏情况的对比、加固与未加固房屋的对比、强震动记录、与烈度衰减关系对比等方面进一步分析,认为抗震加固能减轻土木结构建筑的破坏。甚至可降低其宏观烈度1~2度,对抗震加固的防震减灾效果进行评估;就抗震加固工作及烈度评估工作提出建议。

Based on the field investigation of the damage of civil structure buildings caused by Yangbi M_(S)6.4 earthquake in Yunnan Province,the reinforcement performance and damage characteristics of civil structure houses in the earthquake-stricken areas were analyzed.The analysis results showed that the damage of civil structure houses can be reduced after seismic reinforcement.Through the comparative analysis of damage characteristics of similar earthquakes,analysis of reinforced and unreinforced structures,and the strong motion records,it can be concluded that the seismic reinforcement of civil structure buildings can reduce the macro intensity by 1-2 degrees.Furthermore,the effects of earthquake prevention and disaster reduction of seismic strengthening on civil structures were evaluated,and some suggestions on seismic strengthening and intensity evaluation were put forward.