结合实例对污水提升泵站结构的地震响应分析
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摘要
为了研究污水泵站在水平地震动作用下结构的安全可靠性,采用快速拉格朗日时域有限差分法进行时程分析,并利用大型岩土软件FLAC~(3D)对某地下式污水提升泵站结构进行数值模拟计算。结果表明:水平地震荷载作用下,泵站结构水平残余位移为13,0mm,泵站结构顶板和底板之间的水平相对位移较小;泵站结构整体应力变化较小,应力幅度最大波动18%;结构自振频率约为6.20Hz。总体上,泵站结构产生剪切破坏的概率较小,泵站结构抗震性能较好,结构安全可靠,但仍需做好抗震构造措施。本文的结论可为同类泵站结构的抗震设计提供参考。
In order to research the safety reliability of pumping station in sewerage engineering subjected to the horizontal earthquake,Fast Lagrangian Analysis of Continua was used for seismic time history analysis and the largescale geotechnical software FIAC~(3D)was adopted for numerical calculation of a underground pumping station.The results indicate that the residual horizontal displacement of the pumping station is 13.0mm,and the relative horizontal displacement between the top and bottom plate is small;the whole stress changes a little and the maximum stress amplitude is 18%;the natural frequency of pumping station is about 6.20 Hz.Overall,the probability of shear,tensile and resonance failure of pumping station is small and it is softy and reliability,but seismic construction measures still should be taken.This conclusion can be used by the design of the same type of pumping station.
In order to research the safety reliability of pumping station in sewerage engineering subjected to the horizontal earthquake,Fast Lagrangian Analysis of Continua was used for seismic time history analysis and the largescale geotechnical software FIAC~(3D)was adopted for numerical calculation of a underground pumping station.The results indicate that the residual horizontal displacement of the pumping station is 13.0mm,and the relative horizontal displacement between the top and bottom plate is small;the whole stress changes a little and the maximum stress amplitude is 18%;the natural frequency of pumping station is about 6.20 Hz.Overall,the probability of shear,tensile and resonance failure of pumping station is small and it is softy and reliability,but seismic construction measures still should be taken.This conclusion can be used by the design of the same type of pumping station.
引文
[1]建筑工程抗震设防分类标准(GB 50223-2008)[S]
[2]邬俊,张燎军,陈娟.强震区分离式泵站地震反应分析[J].水力发电,2010,36(3):28-30
[3]张燎军,谢玲璐,周旭飞.软基上半埋式泵站地震反应分析[J].水利水电技术,2008,39(4):37-40
[4]张仁东,吕海燕.台儿庄泵站地震动力分析[J].水利科技与经济,2005,11(10):579-580,582
[5]混凝土结构设计规范(GB 50010-2002)[S]
[6]Itasca Consulting Group Inc.Fast Language Analysis of Continua in 3 Dimensions User's Manual[M/OL].4th ed.Minneapolis:Itasea Consuhing Group Inc,2009[2011-11-03]
[7]室外给水排水和燃气热力工程抗震设计规范(GB 50032-2003)[S]
[8]彭文斌.FLAC~(3D)实用教程[M].北京:机械工业出版社,2008
[9]陈育民,徐鼎平.FLAC/FLAC~(3D)基础与工程实例[M].北京:中国水利水电出版社,2008
[10]给水排水工程钢筋混凝土沉井结构设计规程(CECS 137: 2002)[S]
[2]邬俊,张燎军,陈娟.强震区分离式泵站地震反应分析[J].水力发电,2010,36(3):28-30
[3]张燎军,谢玲璐,周旭飞.软基上半埋式泵站地震反应分析[J].水利水电技术,2008,39(4):37-40
[4]张仁东,吕海燕.台儿庄泵站地震动力分析[J].水利科技与经济,2005,11(10):579-580,582
[5]混凝土结构设计规范(GB 50010-2002)[S]
[6]Itasca Consulting Group Inc.Fast Language Analysis of Continua in 3 Dimensions User's Manual[M/OL].4th ed.Minneapolis:Itasea Consuhing Group Inc,2009[2011-11-03]
[7]室外给水排水和燃气热力工程抗震设计规范(GB 50032-2003)[S]
[8]彭文斌.FLAC~(3D)实用教程[M].北京:机械工业出版社,2008
[9]陈育民,徐鼎平.FLAC/FLAC~(3D)基础与工程实例[M].北京:中国水利水电出版社,2008
[10]给水排水工程钢筋混凝土沉井结构设计规程(CECS 137: 2002)[S]
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