供水管网渗漏模型研究  

Leakage model of water distribution network

作　　者：刘威[1,2] 李斌[2] 李杰[1,2] 

机构地区：[1]同济大学土木工程防灾国家重点试验室,上海200092 [2]同济大学建筑工程系,上海200092

出　　处：《地震工程与工程振动》2014年第1期180-186,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家科技支撑计划课题资助项目(2011BAK02B04)

摘　　要：分析了柔性接头和刚性接头在地震下的破坏模式。在此基础上,给出了具有明确物理意义的接头渗漏面积表达式来修正已有的管线渗漏模型。利用管线渗漏试验确定了渗漏模型中的重要参数——渗漏系数。分别用不同模型对一个小型供水管网的抗震功能可靠度进行了分析。结果表明:既有渗漏模型高估了管网的抗震能力,而本文建议的渗漏模型的结果更加符合实际。The damage models of the flexible and the rigid joints are analyzed. A new equation for leakage area which owns more explicit physical meaning is given to update the old leakage model. Meanwhile, a key parameter of the leakage model, leak coefficient, is derived on the basis of a leakage experiment. The seismic functional reli- ability of a small water distribution network is studied by using the old and the new leakage model respectively. The result shows that the old model overestimates the performance ofthe water distribution network subjected to earth- quake while the new model agrees well with engineering practice.

关 键 词：承插式接头 渗漏面积 渗漏模型 功能可靠度 

分 类 号：TU991[建筑科学—市政工程] P315.9[天文地球—地震学]