【摘要】 现有解析法对隧道开挖导致临近地下管线产生位移的分析较少且考虑影响因素不全面.针对这一问题,在W inkler弹性地基梁理论基础上,建立管线竖向位移的计算模型,提出求解隧道开挖引起的临近地下管线竖向位移的初参数法.通过采用ABAQUS软件中的管土相互作用模块进行管线变形的有限元数值模拟,验证了计算方法的正确性.工程实例的计算结果和实测数据的对比表明文中计算方法的合理性.初参数法综合考虑管线和土体双重因素的影响,克服了已有方法的局限性,且计算结果符合实测管线位移小于自由场土体位移规律.更多还原

【Abstract】 Existing analytic methods for analyzing the displacement of buried pipelines caused by tunnel excavation could be rarely found,and they did not consider all the influence factors usually.Based on Winkler elastic foundation beam theory,a model for calculating vertical displacement of pipelines was established.An initial parameter method for solving vertical displacement of adjacent buried pipeline caused by tunnel excavation was proposed.A numerical calculation of buried pipelines displacement was conducted by pipe-soil modulus of ABAQUS software to prove the validity of the method.The rationality of initial parameter method was proved by comparison between the calculating result and the field test result.Due to considering the dual effect of pipeline and soil,the initial parameter method overcomed the shortage of previous method.The analytic results agreed well with the general rule that the measured displacement of pipelines was smaller than that of free field soil.更多还原