云南农村土木结构房屋有限元抗震分析

Aseismic Analysis of Civil Structure Houses by Finite Element Method in Rural Area of Yunnan

根据2007年6月3日宁洱6.4级地震现场调查结果,对破坏较严重的土坯房建立了地震分析模型。对不同的开间、进深及檐口高的房屋,输入了3类场地超越概率为63%及超越概率为3%的地震波进行了有限元抗震分析。结果表明:墙厚影响不大,墙高的影响较大,墙高增加,破坏性增加;因此建议在满足使用功能的前提下,不增加墙厚,而减少层高对抗震更为有利,最后提出了相应的抗震加固措施。

Based on the site investigation of Ning＇er M6.4 earthquake on Jun. 3, 2007, we construct the earthquake analysis models for the severe damaged adobe houses. Using finite element method, we analyze aseismic of civil structure houses in different bays, depths and eaves heights when inputting 3 kinds of seismic waves are modeled by exceedance probability of 63% and 3% within 50 years respectively. The results show that the storey height has a greater influence than wall thickness on the aseismic of civil structure houses. The higher of storey height, the more of ruinous cracks occurred. We suggest that reducing the storey height and maintaining the basic wall thickness has more advantage to aseismic for the civil structure house under the prerequisite tosatisfy and propose the measure of anti-seismic reinforcement.