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《Chinese Journal of Underground Space and Engineering》 2008-05
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Calculation about Earthquake Stress for Underground Pipeline Based on the Incident Angle of Earthquake Wave

HUANG Qiang-bing1,2,PENG Jian-bing1,2(1.Department of Geology Engineering,Chang'an University,Xi'an 710054,China; 2.Open Research Laboratory of Geotechnical Engineering under the Ministry of Land Resources,Xi'an 710054,China)  
Because of unconsidering the incident angle of earthquake wave and earthquake ground motion acceleration in current common calculation methods of underground pipeline,a new calculation method of earthquake stress of underground pipeline was presented considering the incident angle of earthquake wave.At first,based on the elastic foundation beam(EFB) theory and dynamics of earthquake wave,the model of movement deformation for underground pipeline under earthquake is set up,the incident angle of earthquake wave is introduced into the analysis of interaction between underground pipeline and soil,the coefficient of interaction between underground pipeline and soil-deformation transmission is deduced according to the characteristics of interaction between pipeline and soil,and the earthquake stress formulas for underground pipeline is gotten.Then,an example is studied by the new method to analyze the influence of the incident angle of earthquake wave on the maximum earthquake stresses of different diameter underground pipelines,compared with several common methods at home and abroad,the calculated results show that the new method is simple,effective and rational,and this method can provide reference to seismic design of underground pipeline in engineering practice.
【CateGory Index】: TU990.3
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