不同断面隧道开挖对地层及建筑物影响的数值分析  

作　　者：王云平 赵雅博[2,3] 赵德深 

机构地区：[1]大连大学基建处,辽宁大连116622 [2]大连大学建筑工程学院,辽宁大连116622 [3]大连大学辽宁省复杂结构体系灾害预测与防治重点实验室,辽宁大连116622

出　　处：《科技创新与应用》2019年第33期67-69,71,共4页Technology Innovation and Application

基　　金：国家自然科学基金项目(编号：51274051);辽宁省“兴辽英才计划”项目(编号：XLYC1807219)

摘　　要：运用数值模拟软件MIDAS对不同形状(平顶直墙形、马蹄形、圆形)隧道开挖引起的地层及邻近建筑物的稳定性进行研究,对3种施工断面形状进行优选,结果显示:圆形隧道开挖引起地面沉降影响最小,其次是马蹄形隧道,最后为平顶直墙形隧道;圆形隧道开挖引起的沉降槽宽度和深度较其他形状要小;控制沉降及保证建筑结构的沉降从优至劣依次为圆形>马蹄形>平顶直墙形。This study used the numerical simulation software MIDAS to study the stability of strata and adjacent buildings induced by excavation of tunnels with different shapes(flat-top straight wall,horseshoe,circular).The results show that,the influence of ground subsidence caused by circular tunnel excavation is the smallest,followed by horseshoe tunnel,and finally flat-roofed straight wall tunnel;the width and depth of settlement trough are smaller than those of other shapes;the settlement of controlled and ensured building structures ranges from good to bad as circular>horseshoe>flat top straight wall.

关 键 词：数值模拟 不同形状隧道断面 地表沉降 

分 类 号：TV223.3[水利工程—水工结构工程]