盾构隧道施工对邻近建筑结构的影响分析  

Study on construction influences of shield tunnel excavation to the adjacent buildings

作　　者：王忠昶 王川 朱训国[2] 赵德深[2] WANG Zhongchang;WANG Chuan;ZHU Xunguo;ZHAO Deshen(School of Traftic and Transportation Engineering, Dalian Jiaotong University, Dalian, Liaoning 116028, China;;College of Civil Engineering and Architecture, Dalian University, Dalian, Liaoning 116622, China)

机构地区：[1]大连交通大学交通运输工程学院,辽宁大连116028 [2]大连大学建筑工程学院,辽宁大连116622

出　　处：《中国科技论文》2018年第13期1488-1493,共6页China Sciencepaper

基　　金：国家自然科学基金资助项目(51374045;51774199);辽宁省自然科学基金资助项目(20170540143)

摘　　要：为研究盾构法施工对临近建筑产生的变形扰动,以大连地铁隧道盾构工程为背景,采用Adina程序的RIGIDLINK连接建立了隧道-土体-基础-建筑物的共同作用模型,模拟了隧道开挖造成隧洞周围地层损失和应力的重分布,进而获得了共同作用体系下建筑结构的位移及内力变化规律。研究结果表明,结构竖向位移最大值出现在结构顶部中心,为0.043m,顶部沉降呈现抛物线形。结构水平横向及纵向位移最大值出现在结构与基础接触区域,最大值均不超过0.01m,在工作面接近及远离的过程中,结构水平位移呈现先增加到最大值然后再减小的趋势,最终量极值小于1cm;基础位移量比较大,差异性也比较大,由此造成基础和上部结构的转动;基础剪力极大值点大致在地表下0.2~0.7m,并且随施工工作面的推进不断变大,而其它部位基础的剪应力随着土体卸载稍微减少。To study the deformation disturbance of shield construction on adjacent buildings,the interaction model of tunnel-soil-foundation-building was established by using RIGIDLINK connection of Adina software in the background of shield engineering of Dalian metro tunnel.The formation loss and stress redistribution around the tunnel caused by tunnel excavation were simulated,and then the displacement and internal force variation law of the building structure under the interaction system were obtained.The results showed that the maximum vertical displacement of the structure appeared at the top center of the structure.The value is0.043m.The top subsidence showed a parabolic shape.The maximum horizontal and vertical displacement of the structure appeared at the junction between the structure and the foundation,and the maximum value did not exceed0.01m.The horizontal displacement of the structure first increased to the maximum and then decreased in the process of approaching and away from the working face.The final value of the extreme was less than1cm.The displacement of fundation was relatively large and difference,resulting in the rotation of the foundation and the upper structure;The maximum points of shear force is0.2~0.7m below the surface,and increased with the construction of the working face,while the shear stress of other parts is slightly reduced with the unloading of the soil.

关 键 词：盾构隧道 刚性连接 临近建筑 变形扰动 共同作用模型 数值模拟 

分 类 号：TU375[建筑科学—结构工程]