夏季强降雨对地铁地下车站结构抗浮影响的研究——以郑州地区为例  

Research on the Influence of Strong Summer Rainfall on the Structural Anti-floating of Underground Subway Stations--A Case Study of Zhengzhou District

作　　者：饶邦政 苏东坡 黄亮 李志强 李龙 耿亮 高文元 李亮[5] 李风增 RAO Bangzheng;SU Dongpo;HUANG Liang;LI Zhiqiang;LI Long;GENG Liang;GAO Wenyuan;LI Liang;LI Fengzeng(Beijing Jiaotong University,100044,Beijing,PRC;Guangxi Wanyin Aluminum Building Materials Technology Co.,Ltd.,530105,Nanning,PRC;Guangxi Yicheng Lantu Technology Co.,Ltd.,530002,Nanning,PRC;China State Construction Technical Center,101300,Beijing,PRC;Beijing University of Technology,100124,Beijing,PRC;Zhengzhou Highway Development Center,450052,Zhengzhou,PRC)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]广西万银铝建材科技有限公司,南宁530105 [3]广西易城蓝图科技有限公司,南宁530002 [4]中国建筑股份有限公司技术中心,北京101300 [5]北京工业大学建筑工程学院,北京100124 [6]郑州市公路事业发展中心,郑州450052

出　　处：《江西科学》2024年第6期1248-1255,共8页Jiangxi Science

基　　金：国家自然科学基金项目(51178011);山东省重点研发计划项目(2021CXGC011203);中建股份科技研发课题(CSCEC-2021-Z-22);广西企业委托科技课题(WYALKJ2023-001);河南省住房城乡建设科技计划项目(K-2303)。

摘　　要：为探索夏季强降雨等极端天气情况下地铁地下车站的结构抗浮规律和抗浮技术,基于2021年郑州“7·20”特大暴雨灾害的背景,以郑州地区地铁地下车站为例,选取地铁9号线二期河工大站为具体研究对象,采用现场调研、理论计算分析、有限元仿真等方法展开研究。结果表明,1)通常情况下按现行规范标准进行的抗浮设计能满足现实要求,但在夏季强降雨等极端天气情况下可能无法通过抗浮验算,从而存在安全隐患,因此建议完善地铁车站结构抗浮设计相关规范标准,必要时适当提高抗浮安全系数,以增加抗浮设计的安全储备;2)在地铁地下车站建造过程中,建议充分考虑强降雨等极端天气对地下水位的影响,进一步加强抗浮桩、锚等构造措施,具体实施时综合考虑各类措施的技术特点和成本,合理选择或组合使用;3)车站围护结构能为主体结构提供较为可观的抗浮力,能使地铁地下车站的承载能力极限状态和正常使用极限状态更加安全、科学、经济;类似地,区间隧道与车站主体结构间的连接构造等其他构造可能同样有利于车站结构抗浮;因此推荐在进一步探明这些构造的抗浮机理的基础上,加以充分利用,发挥一切抗浮潜力。In order to explore the structural anti-floating law and technology of subwayunderground stations under extreme weather conditions such as strong summer rainfall,based on the background of the 7·20 extremely heavy rainstorm disaster in Zhengzhou in2021,the subway underground stations in Zhengzhou district are taken as an example,andthe Henan University of Technology Station,Phase II of Zhengzhou Metro Line 9 is selectedas the specific research object.Field investigation,theoretical calculation analysis,finiteelement simulation and other methods are used to carry out the research.The resultsindicate that:1)The current anti-floating design based on the current specifications andstandards can generally meet practical requirements,but it may not pass the anti-floatingcalculation in extreme weather conditions such as strong summer rainfall,resulting in safetyhazards;therefore,it is recommended to improve the relevant specifications and standardsfor anti-floating design of subway station structures,and when necessary,appropriatelyincrease the anti-floating safety factor to increase the safety reserve of anti-floatingdesign;2)In the construction process of subway underground stations,it is recommended tofully consider the impact of extreme weather such as heavy rainfall on the groundwater level,and further strengthen structural measures such as anti-floating piles and anchors;whenimplementing these measures,it’s important to consider the technical characteristics andcosts of various measures to make reasonable selection or combination;3)The stationenclosure structure can provide considerable structural anti-floating for the main structure,making the ultimate bearing capacity and normal use limit state of subway undergroundstations safer,more scientific,and economical;similarly,other structures such as theconnection structure between the interval tunnel and the main structure of the station mayalso be beneficial for the anti-floating of the station structure,thus,it is recommended tofurther explore the anti-floating m

关 键 词：地铁地下车站 夏季强降雨 结构抗浮 抗浮安全系数 抗浮构造措施 

分 类 号：TU924[建筑科学—建筑设计及理论]