地下大跨度岔洞接头分析

用ANSYS对不同跨度主—支洞组合、围岩类别、矢跨比、衬砌截面厚度的大跨度岔洞接头在围岩压力和自重作用下的变形与应力进行了分析,总结了跨度、围岩类别、矢跨比、衬砌截面厚度变化对岔洞接头的影响规律,提出了相应的结构加强措施和截面参考设计尺寸。

Analysis of underground long-span branch tunnel joint structure

Using ANSYS to analysis a series of long-span branch tunnel joint structure with different main tunnel and sub tunnels compages,wall rock classification,rise-span ratios,lining section thickness under the load of wall rock pressure and the self＇s weight,summarize these factors＇s effect,then bring forward the strengthening ways and referential designing size for the long-span branch tunnel joint structure.