岩土工程学报2016，Vol.38Issue(8)：1490-1496,7.DOI:10.11779/CJGE201608017
均质土中钢顶管顶进稳定性的能量法分析
Energy method for stability of steel jacking pipesduring construction in uniform soil
摘要
Abstract
As a trenchless technology,thejacking pipe has been usedin more and more underground pipe lineprojects.The steel jacking pipe mayhaveoverall bucking by improper jacking force during construction. Pipestructure will fail by the instability. To deal with this problem, several effects such as constraint of surrounding soil, fraction between soil and pipe and initial bending of pipe are considered. The analytical solution of critical jacking force is deduced bytheenergy method. The laws for coefficients of stability development are discussedin the aspects of initial bending, coefficient of subgrade reaction of surrounding soil and fraction stress between soil and pipe. The overall stability coefficientsdecrease withthe increasing slenderness for initial bending jacking pipe. Theaxis line deviation significantly reduces the overall stability. On the other hand, the constraint of surrounding soil strengthens the overall stability. The fraction stress between soil and pipehas little influence on the overall stability and can be ignored. The laws fortheoverall stability of steel jacking pipes in uniform soil are very differentfrom those for theordinary steel structural members. The analytical solutionof critical jacking forcecan be used for the design of steel jacking pipes.关键词
钢顶管/轴线偏差/初弯曲/整体稳定/能量法Key words
steel jacking pipe/axis line deviation/initial bending/overall stability/energy method分类
建筑与水利引用本文复制引用
邵光辉,苏毅,赵志峰..均质土中钢顶管顶进稳定性的能量法分析[J].岩土工程学报,2016,38(8):1490-1496,7.基金项目
住房和城乡建设部科学技术项目（2010-K3-10）；江苏高校优势学科建设工程项目 （）
