地道闭合框架结构顶板汽车荷载的计算分析

Calculation and Analysis of Automobile Load on the Roof of Tunnel Closed Frame Structure

地道是城市道路中常见的一种型式。相较于城市高架桥,其具备对城市景观影响小、噪声小,可有效利用土地资源等优势。闭合框架作为地道暗埋段的一种常用结构型式,地面汽车荷载对其作用效应始终没有统一的计算方法,使得结果差异很大,造成了工程浪费。现通过对常用计算方法的分析,提出一种安全、有效的方法,旨在为今后的地道结构设计提供借鉴和参考。

Tunnels are a common feature of urban road,which has advantages such as less impact on urban landscape,low noise,and effective utilization of land resources compared to urban elevated bridges.As a commonly used structural form of underground buried sections,there is no unified calculation method for the effect of ground vehicle loads on closed frames,resulting in significant differences in results and causing engineering waste.This article summarizes a safe and effective method through the analysis of various methods,intended to serve as a guide and reference for future tunnel structural design.