某浅埋湖底隧道主体结构混凝土变形模拟分析  

Simulation of the Concrete Deformation in the Main Structurel of a Lake Tunnel

作　　者：陈德鹏[1,2] 钱春香[2] P．Stroeven 郭占起 

机构地区：[1]安徽工业大学建筑工程学院,马鞍山243002 [2]东南大学材料科学与工程学院,南京210096 [3]代尔夫特工业大学土木工程与地球科学学院,荷兰代尔夫特

出　　处：《地下空间与工程学报》2008年第1期51-56,共6页Chinese Journal of Underground Space and Engineering

基　　金：教育部新世纪优秀人才支持计划(NCET-05-0473);南京市建委重点工程科技攻关项目(7612005074)

摘　　要：根据浅埋湖底隧道的结构特点,利用混凝土热湿耦合原理及有限元方法,将隧道内环境实际温度、相对湿度不断变化的情况作为其时变的边界条件,对实际隧道主体结构钢筋混凝土一年内的变形情况进行了数值模拟分析。通过对数值模拟与现场测试结果的比较分析,数值模拟值与现场测试结果符合较好,说明基于多孔介质热湿传输耦合原理的混凝土变形数值模拟方法是可行的,隧道主体结构混凝土的变形较小,对工程结构的正常使用和耐久性有利。The deformation of reinforced concrete in a lake tunnel is simulated by means of the heat-moisture coupling theory and finite element method. According to the structure characteristics of the lake tunnel, the variation of real environment temperature and relative humidity are considered in numerical simulation. The results of numerical simulation, field test and laboratory measurement are comparatively analyzed and discussed. The results show a low shrinkage in the main structure of the lake tunnel, which is beneficial for the normal service and durability of the tunnel. The method of numerical simulating is available and efficient for studying concrete deformation through coupiing the heat and moisture transfer.

关 键 词：湖底隧道 热湿传输耦合 时变条件 数值模拟 

分 类 号：TU459.5[建筑科学—岩土工程] TB115[建筑科学—土工工程]