运营隧道车道板承载力分析

Analysis of Bearing Capacity on the Lane Plate of Tunnel

针对上海市打浦路越江隧道的施工特点 ,提出用板单元模拟隧道衬砌、车道板和竖向支撑 ,用土弹簧模拟土与隧道的共同作用。根据建立的模型分析隧道车道板在不同汽车荷载作用下的力学行为 ,为评估运营状态下隧道车道板承载力提供参考。

This paper, in the light of construction characteristics of Dapu road tunnel acrossing the Huangpu river in Shanghai, puts forward an analysis method by use of plate element to simulate tunnel lining, lane plate and vertical brace, and of soil spring to simulate interaction between soil and tunnel. According to the model founded, mechanic behavior of tunnel lane plate is analyzed under various loads, which provides reference for evaluating bearing capacity of the tunnel plate in the service state. The calculation results fit with those of the site test.