紧邻建筑物高承压水地层深基坑支护方案研究  

Research on Support Scheme for Deep Foundation Pit in High Pressure Water Ground Layer Adjacent to Buildings

作　　者：杜曈曈 王寒冰 Du Tongtong;Wang Hanbing(Planning Technology Center,Jinan Kail Transi Group Co.Ltd.,Jinan,Shandong 250101;Jinan Design Institute,China Railway Engineering Consulting Group Co.Ltd.,Jinan,Shandong 250022)

机构地区：[1]济南轨道交通集团规划技术中心,山东济南250101 [2]中铁工程设计咨询集团有限公司济南设计院,山东济南250022

出　　处：《江西建材》2023年第10期187-188,191,共3页Jiangxi Building Materials

摘　　要：为探究紧邻建筑物高承压水地层深基坑支护方案,文中以济南轨道交通2号线辛祝路站基坑为研究对象,采用现场监测及力学分析方法,分析了钻孔灌注桩+旋喷桩止水+内支撑支护方案的可行性。结果表明,该方案可有效控制围护结构变形、地层位移,围护结构内力也在可控范围内;施工拆除第二道钢支撑时,围护结构位移及内力有较大突变,需及时施作底板、中板等主体结构;根据现场监测情况,工后数据变化稳定,整体安全状态比较稳定,满足预期要求。In order to explore the support scheme for deep foundation pits in high pressure water layers adjacent to buildings,the foundation pit of Xinzhu Road Station on Jinan Metro Line 2 was taken as the research object.The feasibility of the drlling and grouting pile+rotary jet grouting pile water stop+internal support support scheme was analyzed using on-site monitoring and mechanical analysis methods.The results show that this scheme can effectively control the deformation and displacement of the retaining structure,and the internal force of the retaining structure is also within a controllable range;When the second steel support is removed during construction,there is a significant change in the displacement and internal force of the retaining structure,and it is necessary to promptly construct the main structures such as the bottom plate and middle plate;According to the on-site monitoring situation,the post construction data changes steadily and the overall safety status is relatively stable,meeting the expected requirements.

关 键 词：轨道交通 高承压水 基坑支护 紧邻建筑物 

分 类 号：TU99[建筑科学—市政工程]