芦山7.0级地震穿斗木构架房屋震害特点及原因简析  

Earthquake damage and feature analysis of Chinese traditional timber frame structures subjected to the Lushan 7.0 earthquake

作　　者：孙柏涛[1,2] 张昊宇[1,2] 闫培雷[1,2] 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080 [2]中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨150080

出　　处：《土木工程学报》2014年第3期1-11,共11页China Civil Engineering Journal

基　　金：国家自然科学基金重点项目(50938006);国家自然科学基金青年基金(51108433);地震行业科研专项经费(201308003);黑龙江省博士后资助项目(LBH-Z11001)

摘　　要：穿斗木构架在川西地区民居房屋中应用广泛,在四川省芦山"4·20"7.0级强烈地震中部分房屋震损破坏。对此开展震害调查,结果表明,穿斗木构架房屋震害主要表现为屋面堆瓦、落瓦及少数椽子连接的破坏;砌体围护墙与木构架脱开破坏、墙体开裂、歪闪和倒塌;少数房屋的木构架出现了榫卯脱开、构件折断等破坏,个别房屋倒塌破坏。穿斗木构架房屋平均震害指数分析表明,其震害规律主要表现为震损程度大体随烈度升高而逐渐加重;平均震害程度轻于同地区的砖混结构房屋;相同烈度区,不同房屋的震害程度差异性较大。Chinese traditional timber frame structures are widely used in the residential buildings in western areas of Sichuan Province. Numerous timber structures are hit by the Lushan 7. 0 earthquake on April 20, 2013. Damage investigation shows that the common damage of the timber structures includes dislocation and dropping of the tiles, connection destruction of the rafter, disengaging of the masonry retaining wall with the wood frames. Cracking, inclination or collapsing of the masonry wall is also main expression. Some tenon joints broke away from each other, some components broke or some timber structures collapsed. Average damage index analysis shows that the damage of timber frame structures increase with the earthquake intensity, and the damage level of timber frame structures is less than that of brick structures in the same region. However, earthquake damage for the timber structures in the same intensity region is much different.

关 键 词：芦山地震 穿斗木屋架 震害特点 平均震害指数 

分 类 号：TU366.2[建筑科学—结构工程]