曾晓鑫;丁文湘;彭玲;徐长节;

• 1:华东交通大学江西省岩土工程基础设施安全与控制重点实验室
• 2:浙江省工业设计研究院
• 3:浙江大学滨海和城市岩土工程研究中心

摘要(Abstract)：

基于杭州市某房建地下室深基坑工程采用隔离桩保护邻近既有地铁隧道的工程案例,采用ABAQUS有限元软件进行数值模拟,建立三维模型对不同隔离桩间距下隧道的位移进行分析。结果表明:基坑开挖最终引起隧道下沉约3.1mm,隧道向靠近基坑方向水平位移约1.7mm,数值模拟计算结果与现场实测数据的相关规律吻合;隔离桩间距越小,基坑开挖引起邻近既有地铁隧道位移越小。

关键词(KeyWords)： 深基坑;隔离桩;既有地铁隧道;数值分析;Drucker-Prager硬化模型

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(973计划)资助项目(2015CB057801);; 国家自然科学基金资助项目(51278449,51238009,51338009);; 江西省岩土工程基础设施安全与控制重点实验室资助项目(20161BCD40002)

作者(Author): 曾晓鑫;丁文湘;彭玲;徐长节;

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