梁板式闭合圆环桥的梁格分析法

Design of Longmen Tunnel by New Austrian Tunnelling Method

根据等效网格来模拟桥梁上部构造的梁格分析原理，对梁板式闭合环桥进行分析．为了验证梁格分析法的精确度及可行性，还进行了杆单元和三角形薄板弯曲单元组合的有限元分析，同时以福州市紫阳立交桥主结构为例．做了１∶４０比例的有机玻璃模拟试验．通过比较，三者数据吻合较好。

This paper puts forth the design outline of Fujian Longmen Tunnel by New Austrian Tunnelling Method and probes into calculating method for secondary lining and bolt interval distance of shotcrete and bolt length. The calculating formula of the internal outline size of lining is given.