公路隧道综合管沟结构形式和应力应变特征分析

ANALYSIS OF STRUCTURAL FORM AND STRESS-STRAIN CHARACTERISTICS OF UTILITY TUNNEL

桓集高速大路2号隧道为国内首个采用综合管沟的公路隧道工程,本文依托该工程,开展综合管沟的结构形式及其应力应变特征研究,在确定综合管沟的结构形式和断面形状的基础上,利用数值模拟软件对综合管沟应力应变进行分析。经过对数值模拟结果的分析,发现综合管沟盖板和侧壁顶端变形较大,侧壁处于受力的不利位置。管沟各部位强度均满足要求。

The No.2 Tunnel of Huanji Expressway is the first highway tunnel project in China to adopt a utility tunnel,based on the project,carry out research on the structural form and stress-strain characteristics of the utility tunnel,on the basis of determining the structural form and section shape of the utility tunnel,the stress and strain of utility tunnel are analyzed by numerical simulation software.After analyzing the numerical simulation results,it is found that the top plate and the top of the side wall of the utility tunnel are deformed greatly,and the side wall of the utility tunnel is in an unfavorable position under force,the strength of each part of the utility tunnel meets the requirements.