郑州地铁车站地下连续墙支护基坑的变形分析
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摘要
在郑州地铁紫荆山站换乘段和标准段分别布置测斜管并进行了水平位移的实时监测,整个基坑施工过程中未发现水平位移异常,基坑的最大水平位移值和位移速率均满足规范要求,另外基坑开挖到底至主体结构结束的这一段时间,水平位移并未增大,这说明对于黄河冲击平原的深基坑,地下连续墙+支撑是非常有效的支护措施,对郑州地区今后的地铁基坑工程具有指导意义。
Inclined pipes are respectively buried near the foundation pit of the transfer section and standard section in Zhengzhou subway station,and the horizontal displacements are monitored. no abnormal horizontal displacement is found in the construction process,and the maximum value and rate of horizontal displacement all meet with the standard requirement. Horizontal displacement did not increase from the completion of pit excavation to the main structure,which shows that underground continuous wall + support is very effective support measures for the foundation pit in the Yellow River plain and this confers some engineering reference for the subway pit in Zhengzhou region.
Inclined pipes are respectively buried near the foundation pit of the transfer section and standard section in Zhengzhou subway station,and the horizontal displacements are monitored. no abnormal horizontal displacement is found in the construction process,and the maximum value and rate of horizontal displacement all meet with the standard requirement. Horizontal displacement did not increase from the completion of pit excavation to the main structure,which shows that underground continuous wall + support is very effective support measures for the foundation pit in the Yellow River plain and this confers some engineering reference for the subway pit in Zhengzhou region.
引文
[1]赵锡宏,李蓓,杨国祥,等.大型超深基坑工程实践与理论[M].北京:人民交通出版社,2005.
[2]秦四清,等.深基坑工程优化设计[M].北京:地震出版社,1998.
[3]陈忠汉,程丽萍.深基坑工程[M].北京:机械工业出版社,1999.
[4]JGJ 120-99建筑基坑支护技术规程[S].
[5]BG 50497-2009建筑基坑工程监测技术规范[S].
[2]秦四清,等.深基坑工程优化设计[M].北京:地震出版社,1998.
[3]陈忠汉,程丽萍.深基坑工程[M].北京:机械工业出版社,1999.
[4]JGJ 120-99建筑基坑支护技术规程[S].
[5]BG 50497-2009建筑基坑工程监测技术规范[S].
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