中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (10): 154-159.doi: 10.16265/j.cnki.issn1003-3033.2019.10.024

• 公共安全 • 上一篇    下一篇

多因素影响下的地铁车站深基坑韧性评估

王景春1 教授, 赵福全1, 王炳华2 教授级高工, 何旭升2 高级工程师   

  1. 1 石家庄铁道大学 土木工程学院,河北 石家庄 050043;
    2 南宁轨道交通集团有限责任公司,广西 南宁 530029
  • 收稿日期:2019-07-06 修回日期:2019-09-08 出版日期:2019-10-28 发布日期:2020-10-27
  • 作者简介:王景春 (1968—),河北隆尧人,博士,教授,主要从事土木工程及安全工程方面的教学与科研工作。E-mail: wjc36295@ 163.com。赵福全 (1994—),男,河北沧县人,硕士研究生,研究方向为城市地下空间安全。E-mail:1511620122@qq.com。
  • 基金资助:
    国家自然科学基金资助(51609138);南宁轨道交通集团有限责任公司专项研究课题;石家庄铁道大学2019年度研究生创新资助项目 (YC2019010)。

Resilience evaluation for deep foundation pit of metro station under influence of multiple factors

WANG Jingchun1, ZHAO Fuquan1, WANG Binghua2, HE Xusheng2   

  1. 1 School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang Hebei 050043, China;
    2 Nanning Rail Transit Co., Ltd, Nanning Guangxi 530029, China
  • Received:2019-07-06 Revised:2019-09-08 Online:2019-10-28 Published:2020-10-27

摘要: 为保障地铁车站深基坑在多种因素侵扰下的施工安全,首先提出地铁车站深基坑韧性理论概念,指出系统韧性的时间属性和功能属性,综合考虑这2大主要属性,选择内部应力、风化程度、坑外水位、地表沉降、周边房屋沉降、立柱隆沉、支撑轴力和墙体倾斜等参数作为地铁车站深基坑韧性的评估指标;其次选用欧氏距离法综合评估地铁车站深基坑韧性,利用变异系数法减少主观因素的影响,赋权评估指标;最后选取南宁市某地铁车站深基坑实例,评估得到最终欧氏距离为 0.357 5,对应韧性等级为4.028级。结果表明:利用欧氏距离法能够评估出在多种因素的影响下,地铁车站深基坑结构安全工程属性的优劣程度,评估结果与实际工程相符。

关键词: 地铁车站, 韧性, 欧氏距离法, 深基坑, 变异系数法

Abstract: In order to ensure construction safety for deep foundation pit of subway stations under influence of multiple factors, firstly, resilience concept of deep foundation pit was proposed. Then, time property and functional property of system resilience were stated based on which internal stress, degree of weathering, water level outside of pit, surface settlement, surrounding house settlement, column uplift, support axial force and inclination of wall were selected as evaluation indexes for resilience evaluation. Secondly, Euclidean distance method was used to comprehensively evaluate resilience and evaluation indexes were weighted by using coefficient of variation method to reduce influence of subjective factors. Finally, with deep foundation pit of a subway station in Nanning as a case, Euclidean distance was assessed to be 0.357 5 with corresponding resilience level 4.028. The results show that Euclidean distance method can assess quality of deep foundation pit of subway station under influence of various factors and evaluation results are consistent with the actual project.

Key words: metro station, resilience, Euclidean distance method, deep foundation pit, coefficient of variation method

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