Influence Analysis of Buckle-Arch Construction Sequence of PBA Station on the Settlement of Upper River-Crossing Bridge

doi:10.3969/j.issn.1674-0696.2021.01.13

Abstract

Abstract: One metro station by PBA method undercrossed the top bridge, and the three bridge piles above the station were only 0.6m away from the top of the station. Reasonable buckle-arch construction sequence was the key for pile settlement controlling. 3D finite element method midas was used to analyze the variation law of pile displacement, surface subsidence and middle-column displacement under different buckle-arch sequence and different staggered distance between middle span and side span. The research results show that: the middle-column displacement with middle before side span sequence is larger than that with side before middle span sequence, and the pile displacement and surface subsidence can be effectively controlled; taking the three bridge piles closest to the station as the zero point, the transverse influence range of the buckle-arch construction on the bridge piles is about 15m; under the four construction schemes, the maximum differential settlement of bridge piles is basically the same, and the change trend is consistent with the buckle-arch construction step; the absolute settlement and differential settlement of bridge pile caused by buckle-arch construction are within the allowable range, and the upper bridge is in a safe and controllable state; the pile settlement, surface settlement and middle-column displacement of the three-section model with the staggered distance between the middle span and the side span are better than those of the six-section model. After comprehensive comparison and selection, it is suggested that the buckle-arch construction sequence should be middle before the side span, and the staggered distance between the excavation faces of the middle span and the side span should be three-section mode.

Key words: tunnel engineering, metro station, PBA method, numerical simulation, buckle-arch sequence

摘要： 某PBA工法地铁车站下穿跨河桥，车站上方3根桥桩距离车站顶部仅0.6 m，合理扣拱施工工序是桥桩沉降控制的关键。采用三维有限元分析法研究了不同扣拱施工顺序及不同中、边跨开挖面错距下桥桩位移、地表沉降及车站中柱位移的变化规律。研究结果表明：先中后边顺序下车站中柱位移较大，但是桥桩及地表沉降可以得到有效控制；以最靠近车站的3根桥桩为坐标零点，扣拱施工对桥桩横向影响范围为15 m左右；4种施工方案下桥桩最大差异沉降基本相同，且随着扣拱施工步变化趋势一致；扣拱施工引起的桥桩绝对沉降和差异沉降均在允许范围内，上部桥梁处于安全可控状态；中、边跨错距为三段模式的桥桩沉降、地表沉降及中柱位移均优于中、边跨错距为六段模式；经综合比选，扣拱施工顺序建议先中后边，中、边跨开挖面错距建议为三段模式。

关键词: 隧道工程, 地铁车站, PBA工法, 数值模拟, 扣拱顺序

CLC Number:

CAO Liqiao1, WANG Zhibin2, ZHOU Dingheng3. Influence Analysis of Buckle-Arch Construction Sequence of PBA Station on the Settlement of Upper River-Crossing Bridge[J]. Journal of Chongqing Jiaotong University(Natural Science), 2021, 40(01): 79-86.

曹力桥1，王志斌2，周丁恒3. PBA车站扣拱施工顺序对上部跨河桥沉降影响分析[J]. 重庆交通大学学报（自然科学版）, 2021, 40(01): 79-86.

References

［1］罗富荣，汪玉华.北京地区PBA法施工暗挖地铁车站地表变形分析［J］. 隧道建设，2016，36(1)：20-26.
LUO Furong，WANG Yuhua. Analysis on ground surface deformation of mined metro station constructed by PBA method in Beijing ［J］. Tunnel Construction，2016，36(1)
：20-26.
［2］曾冰海.洞桩法（PBA）暗挖多跨地铁车站扣拱施工［J］. 隧道建设，2010，30(4)：456-460.
ZENG Binghai. Arch lining construction of mined multi-span metro station constructed by PBA method［J］. Tunnel Construction，2010，30(4)：456-460.
［3］王峥峥，郭翔宇.地铁车站洞桩法施工对地层沉降影响研究［J］.大连理工大学学报，2016，56(3)：257-262.
WANG Zhengzheng, GUO Xiangyu. Research on ground settlement of metro station construction by PBA method ［J］. Journal of Dalian University of Technology，2016，
56(3)：257-262.
［4］吴波，刘维宁，索晓明，等. 城市地铁施工近邻短桩桥基加固效果研究［J］. 土木工程学报，2006，39(7): 99-103.
WU Bo, LIU Weining, SUO Xiaoming，et al. A study on the reinforcement of a short-piled overpass foundation in the vicinity of metro construction ［J］. Chinese
Civil Engineering Journal，2006，39(7): 99-103.
［5］吴波，刘维宁，索晓明，等. 北京地铁转弯段施工对近邻桥基的影响研究［J］. 岩土力学，2007，28(9): 1904-1908.
WU Bo, LIU Weining, SUO Xiaoming，et al. Study of effect on pile foundation of Guomao Bridge induced by Guomao Metro Station construction at swerve ［J］. Rock and
Soil Mechanics，2007，28(9): 1904-1908.
［6］何海健，项彦勇，刘维宁. 地铁施工引起邻近桥梁桩基差异沉降的概率分析［J］. 岩石力学与工程学报，2007，26(增刊1)：3257-3265.
HE Haijian，XIANG Yanyong，LIU Weining. Probabilistic analysis of tunneling-induced differential settlement of a pile-supported urban overpass ［J］. Chinese
Journal of Rock Mechanics and Engineering，2007，26(Sup1)：3257-3265.
［7］姚宣德.浅埋暗挖法地下工程施工对既有桥梁的影响分析［J］. 水利水电技术，2010，41(4)：62-68.
YAO Xuande. Analysis on impact from underground work constructed with shallow-buried tunneling method on existing bridge ［J］. Water Resources and Hydropower
Engineering，2010，41(4)：62-68.
［8］李汶京. 地铁车站隧道群邻近桥桩施工关键技术研究［J］. 铁道标准设计，2009 (10): 85-89.
LI Wenjing. Key technique for construction of tunnels close to bridge piles at metro station ［J］. Railway Standard Design， 2009 (10): 85-89.
［9］毛巨省. 车站风道施工对既有桥基变形的影响规律［J］. 煤田地质与勘探，2010，38(5)：38-41.
MAO Jusheng. Influence of metro airway tunneling on existing pile foundation near subway station［J］. Coal Geology & Exploration，2010，38(5)：38-41.
［10］周正宇，苏洁. 地铁施工对邻近既有桥梁主动防护技术的研究［J］. 都市快轨交通，2012，25(3)：68-71.
ZHOU Zhengyu，SU Jie. Study on active protection technology for an existing bridge adjacent to a subway project ［J］. Urban Rapid Rail Transit，2012，25(3)：68-
71.
［11］周正宇，苏洁. 浅埋暗挖法穿越既有桥梁的施工风险控制［J］. 北京交通大学学报，2012，36(3)：12-18.
ZHOU Zhengyu，SU Jie. Risk control crossing the existing bridge with shallow tunnel construction ［J］. Journal of Beijing Jiaotong University，2012，36(3)：12-18.
［12］苏洁，张顶立，周正宇,等. 地铁隧道穿越既有桥梁安全风险评估及控制［J］. 岩石力学与工程学报，2015，34(增刊1)：3188-3195.
SU Jie，ZHANG Dingli，ZHOU Zhengyu，et al. Safety risk assessment and control of existing bridge crossed by tunnel construction ［J］. Chinese Journal of Rock
Mechanics and Engineering，2015，34(Sup1)：3188-3185.
［13］任建喜，王松，陈江，等. 地铁车站 PBA 法施工诱发的地表及桥桩沉降规律研究［J］. 铁道工程学报，2013 (9)： 92-98.
［13］ REN Jianxi，WANG Song，CHEN Jiang，et al. Study on settlement regulations of ground surface and bridge pier induced by metro station construction with PBA
method ［J］. Journal of Railway Engineering Society，2013 (9)：92-98.
［14］韦京，王芳，孙明志. PBA 工法地铁车站下穿桥梁方案优化研究［J］. 现代隧道技术，2014，51(6)：101-107.
WEI Jing，WANG Fang，SUN Mingzhi. On scheme optimization of the PBA subway station underneath a bridge ［J］. Modern Tunneling Technology，2014，51(6)：101-107.
［15］刘军，章良兵，荀桂富，等. PBA工法扣拱施工顺序的优化分析研究［J］. 北京建筑大学学报，2016，32(1)：36-41.
LIU Jun，ZHANG Liangbing，XUN Guifu，et al. Optimization analysis of buckle-arch construction sequence for PBA method ［J］. Journal of Beijing University of Civil
Engineering and Architecture，2016，32(1)：36-41.

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