[1]吴波、吴兵兵.基于安全系数法地铁暗挖通道施工可靠性分析[J].福建工程学院学报,2021,19(04):322-329.[doi:10.3969/j.issn.1672-4348.2021.04.003]
 WU Bo,WU Bingbing.Construction reliability analysis of underground tunnel based on safety factor method[J].Journal of FuJian University of Technology,2021,19(04):322-329.[doi:10.3969/j.issn.1672-4348.2021.04.003]
点击复制

基于安全系数法地铁暗挖通道施工可靠性分析()
分享到:

《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第19卷
期数:
2021年04期
页码:
322-329
栏目:
出版日期:
2021-08-25

文章信息/Info

Title:
Construction reliability analysis of underground tunnel based on safety factor method
作者:
吴波、吴兵兵
东华理工大学
Author(s):
WU BoWU Bingbing
School of Civil and Architectural Engineering, East China University of Technology
关键词:
地铁隧道强度折减法施工可靠度监测数据
Keywords:
subway tunnel strength reduction method construction reliability monitoring data
分类号:
U455
DOI:
10.3969/j.issn.1672-4348.2021.04.003
文献标志码:
A
摘要:
地铁车站出入口通道暗挖施工具有很高的风险,为确保此类工程安全施工及量化评价施工可靠性,以南昌地铁3号线通道暗挖工程为依托,采用ABAQUS软件建立三维数值分析模型分别模拟上下台阶法施工和交叉中隔壁法施工。数值模拟结果表明,仅交叉中隔壁法能够满足安全施工和有效控制地层沉降的要求。针对交叉中隔壁法施工,采用有限元强度折减法计算得到无风险因素作用和风险因素最不利组合作用下的安全系数,由点估计法计算通道暗挖施工可靠度。研究结果表明:无风险因素作用时,通道暗挖施工失效概率仅为0.17%,当通道左上导洞开挖遭遇极端降雨天气时,失效概率达到99.7%。强降雨导致通道上覆土体强度降低,此时必须采取加固措施,否则通道施工安全和沉降控制将大概率无法满足要求。通道暗挖施工期间应高度重视监控量测工作,风险因素作用下通道围岩有显著的特征点位移变化,是一个渐进的过程,及时分析监测数据和采取相应技术手段,可避免施工安全风险的发生。
Abstract:
Underground excavation of entrance and exit passages in subway stations is very risky. In order to ensure the safe construction of such projects and quantitatively evaluate the construction reliability, based on the tunnel excavation project of Nanchang Metro Line 3, ABAQUS software was adopted to establish three-dimensional numerical analysis models to simulate the construction of the up-down step method and the construction of CRD method respectively. Numerical results show that CRD method can meet the requirements of safe construction and effective control of subsidence. The safety factor under the effect of no risk factors and the most unfavorable combination of risk factors was calculated by the finite element strength reduction method, and the reliability of tunnel excavation construction was calculated by the point estimation method. Results show that the failure probability of tunnel excavation without risk factors is only 0.17%, and the failure probability of tunnel excavation under extreme rainfall weather reaches 99.7%. The strength of overlying soil is reduced due to heavy rainfall, so reinforcement measures must be taken at this time, or the safety of construction and settlement control of the passage will most likely fail to meet the requirements. Great importance should be attached to monitoring and measurement work during tunnel excavation construction. Under the action of risk factors, rocks surrounding the tunnel shows significant displacement changes of characteristic points, which is a gradual process. Timely analysis of monitoring data and adopting corresponding technical measures can avoid the occurrence of construction safety risks.

参考文献/References:

[1] 钱七虎. 地下工程建设安全面临的挑战与对策[J]. 岩石力学与工程学报, 2012, 31(10):1945-1956.[2] 孙钧. 隧道和地铁工程建设的风险整治与管理及其在中国的若干进展[C]∥上海市土木工程学会、上海隧道工程股份有限公司.地下工程施工与风险防范技术——2007第三届上海国际隧道工程研讨会文集.北京:中国岩石力学与工程学会, 2007: 18.[3] 张毅军, 戎晓力, 钱七虎, 等. TOPSIS方法在地铁施工风险分析中的应用[J]. 地下空间与工程学报, 2010, 6(4):856-860.[4] 郝风田, 赵平. 基于可靠度理论的地铁施工项目风险控制研究[J]. 地下空间与工程学报, 2011, 7(2):380-384.[5] 王䶮, 刘保国, 亓轶. 基于WBS-RBS与故障树耦合的地铁施工风险与评价[J]. 地下空间与工程学报, 2015, 11(S2):772-779.[6] 闫文周, 门雪, 杨翻艳. 基于相互作用矩阵的地铁施工风险评价[J]. 武汉大学学报(工学版), 2019, 52(9):796-801.[7] 赵文, 韩利, 关永平, 等. 地铁暗挖车站施工对密集建筑群的影响和风险分析[J]. 东北大学学报(自然科学版), 2013, 34(1):140-142, 148.[8] 应国柱, 汪鹏程, 朱大勇, 等. 基于模糊综合评价模型的地铁施工风险评估[J]. 地下空间与工程学报, 2016, 12(2):539-545.[9] 张飞燕, 张特曼, 王泽武. 城市地铁施工安全风险评价与控制研究[J]. 地下空间与工程学报, 2019, 15(S1):443-448.[10] 北京市轨道交通建设管理有限公司.地铁工程监控量测技术规程:DB11/ 490—2007[S]. 北京:北京市质量技术监督局, 2007.[11] 费康, 张建伟. ABAQUS在岩土工程中的应用[M]. 北京:中国水利水电出版社, 2010.[12] 陈卫忠, 伍国军, 贾善坡. ABAQUS在隧道及地下工程中的应用[M]. 北京:中国水利水电出版社, 2010.[13] 李杰. 基于可靠度方法的既有铁路边坡稳定性分析[J]. 铁道工程学报, 2014, 31(2):33-37.[14] 秦文帅, 李光范, 胡伟, 等. 饱和度变化对非饱和粉质粘土抗剪强度的影响[J]. 海南大学学报(自然科学版), 2016, 34(3):270-277.[15] 李先文. 南昌城区主要岩土层参数特性及其关联性分析研究[D].南昌:南昌大学, 2018.

相似文献/References:

[1]陈美华,李杰.地铁建设项目施工风险评价研究——以福州地铁1号线项目为例[J].福建工程学院学报,2016,14(04):398.[doi:10.3969/j.issn.1672-4348.2016.04.017]
 Chen Meihua,Li Jie.Construction risk evaluation for subway construction projects:Taking Fuzhou subway line 1 as an example[J].Journal of FuJian University of Technology,2016,14(04):398.[doi:10.3969/j.issn.1672-4348.2016.04.017]
[2]耿璐莹,臧万军,张丙强.衬砌背后空洞对浅埋隧道结构稳定性的影响[J].福建工程学院学报,2023,21(06):511.[doi:10.3969/j.issn.1672-4348.2023.06.001]
 GENG Luying,ZANG Wanjun,ZHANG Bingqiang.Effect of voids behind lining on structural stability of shallow buried tunnels[J].Journal of FuJian University of Technology,2023,21(04):511.[doi:10.3969/j.issn.1672-4348.2023.06.001]

更新日期/Last Update: 2021-08-25