Journal of Jilin University(Earth Science Edition) ›› 2020, Vol. 50 ›› Issue (6): 1823-1832.doi: 10.13278/j.cnki.jjuese.20190145

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Stability Evaluation of Deep Foundation Pit of Metro Based on Grey Correlation Analysis with Combined Weights

Lang Qiuling, Wang Wei, Gao Chengliang   

  1. School of Prospecting and Surveying, Changchun Institute of Technology, Changchun, 130021, China
  • Received:2019-07-21 Published:2020-12-11
  • Supported by:
    Supported by Major Science and Technology Projects of Jilin Province (20170204035SF), Key Science and Technology Projects of Jilin Province (20180201033SF) and "13th Five-Year" Research Planning Project of Jilin Provincial Department of Education (JJKH20191243KJ)

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Abstract: Because of many risk factors, the stability of deep foundation pit of metro is highly demanded during excavation. Especially in the water-rich gravel stratum and near the existing metro line, it is extremely necessary to make an accurate evaluation of the stability of foundation pit in excavation. The authors took Fengxi station deep foundation pit project of Chengdu Metro Line 17 as the research object, by using the combined weight obtained by using the subjective weight determined by AHP and the objective weight determined by entropy method with the grey correlation method, and objectively evaluated the stability of foundation pit in the excavation through the fuzzy comprehensive evaluation of the monitoring data of the sections around the foundation pit. The evaluation results show that the importance of foundation pit stability to each monitoring project from large to small is horizontal displacement of pile on the top (0.29), ground settlement (0.24), building settlement (0.19) settlement of pile on the top (0.18),and internal support axial force (0.10). The comprehensive evaluation result of the foundation pit stability is very good. The evaluation model can provide reference for the construction of deep foundation pit and risk control in Chengdu area.

Key words: water-rich gravel stratum, excavation of deep foundation pit, combination weights, gray relational analysis, stability evaluation

CLC Number: 

  • TU470
[1] Zadeh A L. Fuzzysets[J]. Information and Control,1965, 8(3):338-353.
[2] 汪培庄.模糊集合论及其应用[M]. 上海:上海科学技术出版社,1983. Wang Peizhuang. Fuzzy Set Theory and Its Application[M]. Shanghai:Shanghai Science and Technology Press,1983.
[3] 杨继华, 路新景, 闫长斌,等. 基于模糊综合评判的护盾式TBM施工围岩稳定性分类[J]. 吉林大学学报(地球科学版), 2018, 48(5):312-318. Yang Jihua,Lu Xinjing,Yan Changbin,et al. Stability Classification of Tunnel Surrounding Rock During Shield TBM Construction Based on Fuzzy Comprehensive Evaluation[J]. Journal of Jilin University (Earth Science Edition), 2018,48(5):312-318.
[4] 胡友健,李梅,赖祖龙,等.深基坑工程监测数据处理与预测报警系统[J].焦作工学院学报(自然科学版), 2001(2):130-135. Hu Youjian, Li Mei, Lai Zulong, et al. The System of Monitoring Data Processing and Predicting and Alarm of Deep Pit Engineering[J]. Journal of Jiaozuo Institute of Technology(Nature Science), 2001(2):130-135.
[5] 李惠强,吴静.深基坑支护结构安全预警系统研究[J].华中科技大学学报(城市科学版), 2002(1):61-64. Li Huiqiang, Wu Jing. Study of Security Early Warning System of Deep Pit Supporting Structure[J]. Journal of Huazhong University of Science and Technology (Urban Science Edition), 2002(1):61-64.
[6] 王广月.深基坑支护决策的信息熵模糊层次分析模型[J].岩土力学, 2004,25(5):737-739. Wang Guangyue. Information Entropy Fuzzy Analytic Hierarchy Process Model for Retaining Decision Making of Deep Foundation Pits[J]. Rock and Soil Mechanics, 2004, 25(5):737-739.
[7] 李朝阳,叶聪,沈圆顺.基于模糊综合评判的地铁基坑施工风险评估[J].地下空间与工程学报,2014,10(1):220-226. Li Chaoyang, Ye Cong, Shen Yuanshun. Risk Assessment of Subway Pit Construction Based on Fuzzy Comprehensive Evaluation[J]. Chinese Journal of Under-Ground Space and Engineering, 2014,10(1):220-226.
[8] 刘俊伟,尚文昌,于秀霞,等.基于模糊评判理论的深基坑施工风险评价[J].地下空间与工程学报,2016,12(3):825-830. Liu Junwei, Shang Wenchang, Yu Xiuxia, et al. Risk Assessment on Deep Excavation Construction Based on Fuzzy Evaluation Theory[J]. Chinese Journal of Under-Ground Space and Engineering, 2016,12(3):825-830.
[9] 李立新,于媛媛,刘曣.基于模糊理论的地铁车站基坑工程安全性评价方法研究[J].沈阳建筑大学学报(自然科学版),2006,22(3):375-378. Li Lixin, Yu Yuanyuan, Liu Yan. Research on Safety Evaluation About Foundation Excavation of Subway Stations Based on Fuzzy Theory[J]. Journal of Shenyang Jianzhu University(Natural Science), 2006,22(3):375-378.
[10] 张驰,黄广龙,李娟.深基坑施工环境影响的模糊风险分析[J].岩石力学与工程学报,2013,32(增刊1):2669-2675. Zhang Chi, Huang Guanglong, Li Juan. Fuzzy Risk Analysis for Influence of Deep Foundation Pit Excavation on Surrounding Environment[J]. Chinese Journal of Rock Mechanics and Engineering, 2013,32(Sup.1):2669-2675.
[11] 牛发阳,王建波,赵佳,等.深基坑支护方案灰色模糊综合评价[J].青岛理工大学学报,2016,37(1):27-32. Niu Fayang, Wang Jianbo, Zhao Jia, et al. Grey Fuzzy Comprehensive Evaluation of Deep Foundation Support Schemes[J]. Journal of Qingdao University of Technology, 2016,37(1):27-32.
[12] 周红波,高文杰,蔡炳来,等. 基于WBS-RBS的地铁基坑故障树风险识别与分析[J].岩土工程学报, 2006, 28(增刊):1912-1915. Zhou Hongbo, Gao Wenjie, Cai Binglai, et al. Risk Identification and Analysis of Subway Foundation Pit by Using Fault Tree Analysis Method Based on WBS-RBS[J]. Rock and Soil Mechanics, 2006, 28(Sup.):1912-1915.
[13] 周红波.基于贝叶斯网络的深基坑风险模糊综合评估方法[J].上海交通大学学报, 2009, 43(9):1473-1479. Zhou Hongbo. Risk Assessment of Deep Foundation Pit by Using Fuzzy Comprehensive Eevaluation Method Based on Bayesian Networks[J]. Journal of Shanghai Jiaotong University, 2009, 43(9):1473-1479.
[14] 周红波,纪梅.基于数值模拟方法的深基坑施工风险等级判定[J].建筑施工,2014,37(3):233-235. Zhou Hongbo, Ji Mei. Determination of Deep Foundation Pit Risk Level Based on Numerical Simulation Method[J]. Building Construction, 2014, 37(3):233-235.
[15] 杨开彪,梁发云,殷晟泉.基于现场监测数据的深基坑风险集中度分析方法[J].结构工程师,2012,28(5):128-134. Yang Kaibiao, Liang Fayun, Yin Shengquan. Risk Concentrations Analysis of Deep Excavations Based on In-Situ Monitoring Data[J]. Structural Engineers, 2012,28(5):128-134.
[16] 曹净,丁文云,赵党书,等.基于PSO-LSSVM模型的基坑变形时间序列预测[J]. 控制工程, 2015, 22(3):475. Cao Jing, Ding Wenyun, Zhao Dangshu, et al. Time Series Forecast of Foundation Pit Deformation Based on PSO-LSSVM[J]. Control Engineering of China, 2015, 22(3):475.
[17] 唐建新,李欣怡.基于模糊数学的地铁深基坑稳定性评价[J].安全与环境学报,2018,18(6):2135-2140. Tang Jianxin, Li Xinyi. On the Stability Evaluation of the Deep Subway Foundation Pit Based on the Fuzzy Mathematical Theory[J]. Journal of Safety and Environment, 2018,18(6):2135-2140.
[18] 陈兴贤, 骆祖江, 安晓宇,等. 深基坑降水三维变参数非稳定渗流与地面沉降耦合模型[J]. 吉林大学学报(地球科学版), 2013,43(5):1572-1578. Chen Xingxian,Luo Zujiang,An Xiaoyu,et al. Coupling Model of Groundwater Three Dimensional Variable-Parametric Non-Steady Seepage and Land-Subsidence[J]. Journal of Jilin University(Earth Science Edition), 2013,43(5):1572-1578.
[19] 建筑基坑工程监测技术标准:GB 50497-2019[S]. 北京:中国计划出版社,2019. Technical Standard for Monitoring of Building Excavation Engineering:GB 50497-2019[S]. Beijing:China Planning Press, 2019.
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