常州地区基坑降水引起的地面沉降计算方法
韩文君1赵宇豪2闫鑫2童立元2刘松玉2奚赛英3
Calculation Method of Land Subsidence Caused by Foundation Pit Dewatering in Changzhou Area
HAN WenjunZHAO YuhaoYAN XinTONG LiyuanLIU SongyuXI Saiying
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作者信息:1.1.常州市轨道交通发展有限公司，213022，常州；
2.2.东南大学交通学院，210096，南京；
3.3.常州市规划设计院，213022，常州
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Affiliation:Changzhou Rail Transit Development Co., Ltd., 213022, Changzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.01.011
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中图分类号/CLCN:TU433；TU46+3
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栏目/Col:研究报告
摘要:
统计了常州地区多个基坑土层超固结比资料。结合两处场地的抽水试验数据，对比分析了分层总和法与考虑应力历史影响的沉降计算方法，并将这两种方法与有限元软件模拟结果、沉降监测结果进行对比。研究结果表明：相较于分层总和法，考虑应力历史影响的沉降计算方法更接近于实际沉降监测结果，可将其用于快速估算大降深条件下、水文地质特点类似常州地区、由降水引起的周围地面沉降量。
Abstracts:
The data of multiple foundation pits over\|consolidation ratio in Changzhou area is counted. Taking the pumping test data of two sites, the splitting summation method and the subsidence calculation method considering stress history influence are compared and analyzed. The finite element software simulation results and subsidence monitoring results are compared. Research results show that compared with splitting summation method, the subsidence calculation method considering stress history influence provides closer results to monitoring ones of actual subsidence. This method can be used to quickly estimate the surrounding land subsidence value caused by dewatering under the condition of large drawdown and in areas with hydrogeological features similar to Changzhou.
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