采空塌陷区桥跨结构探讨

Discussion on bridge span structure in mines-out subsided area

运用非线性有限元软件ADINA数值模拟与理论计算相结合的手段,以枣木高速公路木石公铁立交桥为原型对采空区上桥梁进行分析研究,分别研究了多种不同情况下桥梁应力、应变和稳定性的变化规律,并提出相应的应对措施,以设计出最适合采空塌陷区的桥梁结构形式。

By the comprehensive application of nonlinear finite element software ADINA numerical simulation and theoretical calculation,the thesis analyzed and studied the bridges over the mined-out area with road and railroad interchange over the Zao-Mu highway as the prototype.In all kinds of different situations it studied separately the variation disciplines of bridge tension,strain and stability and proposed corresponding treatment measures,so as to design the most suitable bridge structure form for mined-out subsided areas.