砖砌体建筑在泥石流冲击力作用下动态响应实验

我国山地泥石流活动频繁,建筑物防护是山区城镇建设及泥石流堆积扇开发利用中必须解决的问题,有效模拟泥石流冲击力,研究建筑物在泥石流冲击力作用下的动态响应有助于防灾工程设计。以云南东川蒋家沟为研究区域,利用实际观测数据和对泥石流破坏现场调查分析的结果,对粘性泥石流冲击力进行理论模拟,研究砖砌体建筑在受到泥石流冲击力作用下的受力形式及破坏形态;在此基础上,进行了砖砌体结构墙体模型试件的破坏性实验,现场观测试件在冲击力作用下的破坏形态和历程,采集其动态位移及主振频率数据,得出结构开裂冲量。

Experimental Research of Unreinforced Masonry Wall under Dynamic Impact of Debris Flow

In recent years,ruinous debris flow disasters erupted frequently in Chinese mountain areas.How to prevent and control debris flow has become more and more important in the construction of mountain town and the development and planning of deposit span of debris flow.It's very important to simulate impact load of debris flow effectively and to investigate dynamic response of architectures under dynamic impact of debris flow,all of these research are necessary to anti-disaster construction design.This paper chose Jiangjiagou of Yunnan province,in China as research region.Utilizing based data from fieldwork and survey,this paper simulated and calculated theoretically the bearing load style and the destructed shape of unreinforced masonry construction impacted by debris flow.Secondly,the authors fulfilled a destructed impactive test of a set of unreinforced masonry wall model.During experiment,the destructed shape and course of model were observed and the dynamic displacement datas and main natural frequency datas of model were collected using IMHE Impact Data Collecting System(IMHE IDCS).According to failure criterion and experiment data,the impact resistance of researched architecture was deducted.