钢管桩-注浆加固盾构换刀区稳定性分析

doi:10.16183/j.cnki.jsjtu.2021.032

上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (6): 690-699.doi: 10.16183/j.cnki.jsjtu.2021.032

所属专题：《上海交通大学学报》2023年“船舶海洋与建筑工程”专题

钢管桩-注浆加固盾构换刀区稳定性分析

戴治恒¹, 张孟喜¹(), 魏辉², 顾婕¹, 张晓清¹

1.上海大学力学与工程科学学院,上海 200444
2.中铁二十局集团第五工程有限公司,昆明 650200

收稿日期:2021-01-27 修回日期:2021-04-19 接受日期:2021-05-04 出版日期:2023-06-28 发布日期:2023-07-05
通讯作者: 张孟喜 E-mail:mxzhang@i.shu.edu.cn.
作者简介:戴治恒(1991-),博士生,从事盾构隧道及地下工程研究.
基金资助:
国家自然科学基金面上项目(52078286);中铁二十局集团有限公司技术开发课题(YF1805SD01B)

Stability Analysis of Shield Cutter Replacement Ground Reinforced with Steel Pipe Pile-Grouting

DAI Zhiheng¹, ZHANG Mengxi¹(), WEI Hui², GU Jie¹, ZHANG Xiaoqing¹

1. School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, China
2. 5th Engineering Co., Ltd., China Railway 20th Bureau Group, Kunming 650200, China

Received:2021-01-27 Revised:2021-04-19 Accepted:2021-05-04 Online:2023-06-28 Published:2023-07-05
Contact: ZHANG Mengxi E-mail:mxzhang@i.shu.edu.cn.

摘要/Abstract

摘要：

以佛-莞城际线路长隆隧道工程为背景,采用室内试验和数值模拟,研究常压开仓时换刀区失稳和渐进破坏过程.结合工程实际建立数值模型,采用快速拉格朗日差分法分析钢管桩-注浆方案常压换刀区地层的安全系数,对比分析钢管桩-注浆加固方案对换刀区地层应力释放和位移的控制效果.结果表明,常压开仓时盾构开挖面首先失稳,并引起土体流失以及土压力释放现象;随着刀盘后移,逐渐诱导换刀区地层出现大范围竖向位移,最终贯通至地表.采用钢管桩-注浆方案,换刀区安全系数得到显著提高,地层应力释放和位移均得到有效控制.与注浆加固方案相比,钢管桩-注浆方案具有工期短、污染少的优点且钢管桩可回收,不影响土体后续使用,为工程提供新的地层加固思路.

关键词: 常压换刀, 钢管桩-注浆加固, 开挖面稳定性, 全风化地层, 上软下硬地层

Abstract:

Based on the Foshan-Dongguan Intercity Line Changlong Tunnel Project, indoor tests and numerical simulations were conducted to study the instability and progressive failure process of the cutter replacement ground at atmospheric pressure. The fast Lagrangian analysis of continua method was adopted to establish the numerical model. The safety factor of the cutter replacement ground was analyzed, and the effect of the steel pipe pile-grouting method on the control effect of release and displacement was studied. The results show that the excavation face becomes unstable at atmospheric pressure, which causes soil loss and earth pressure release. As the cutter head moves backward, a large-scale vertical displacement of cutter replacement ground is gradually induced, and finally goes through to the surface. With the steel pipe pile-grouting reinforcement, the safety factor of the cutter replacement ground is significantly improved, and the ground stress release and displacement is effectively controlled. Compared with the grouting reinforcement, the steel pipe pile-grouting reinforcement has the advantages of short construction period and less pollution. Moreover, the steel pipe pile could be recycled without affecting the subsequent use of the soil, which provides a new ground reinforcement idea for the project.

Key words: cutter replacement at atmospheric pressure, steel pipe pile-grouting reinforcement, face stability, fully weathered stratum, upper-soft and lower-hard stratum

中图分类号:

TU94

戴治恒, 张孟喜, 魏辉, 顾婕, 张晓清. 钢管桩-注浆加固盾构换刀区稳定性分析[J]. 上海交通大学学报, 2023, 57(6): 690-699.

DAI Zhiheng, ZHANG Mengxi, WEI Hui, GU Jie, ZHANG Xiaoqing. Stability Analysis of Shield Cutter Replacement Ground Reinforced with Steel Pipe Pile-Grouting[J]. Journal of Shanghai Jiao Tong University, 2023, 57(6): 690-699.

图/表 16

图1

图2

图3

图4

图5

图6

图7

图8

表1

表2

表3

图9

图10

图11

图12

图13

参考文献 14

[1]	周志强, 钟显奇, 宋金良, 等. 广州地区盾构施工风险及控制技术要点[J]. 隧道建设, 2010, 30(5): 608-611.
	ZHOU Zhiqiang, ZHONG Xianqi, SONG Jinliang, et al. Risk analysis and risk control technology for shield tunneling in Guangzhou region[J]. Tunnel Construction, 2010, 30(5): 608-611.
[2]	陈健, 刘红军, 闵凡路, 等. 盾构隧道刀具更换技术综述[J]. 中国公路学报, 2018, 31(10): 36-46.
	CHEN Jian, LIU Hongjun, MIN Fanlu, et al. Technical review of cutter replacement in shield tunneling[J]. China Journal of Highway and Transport, 2018, 31(10): 36-46.
[3]	朱伟, 钱勇进, 王璐, 等. 土压平衡盾构不满舱施工遇到的问题及对策[J]. 中国公路学报, 2020, 33(12): 224-234. doi: 10.19721/j.cnki.1001-7372.2020.12.018
	ZHU Wei, QIAN Yongjin, WANG Lu, et al. Problems and measures of earth pressure balance shield during construction with the unfilled chamber[J]. China Journal of Highway and Transport, 2020, 33(12): 224-234. doi: 10.19721/j.cnki.1001-7372.2020.12.018
[4]	宋洋, 李昂, 王韦颐, 等. 泥岩圆砾复合地层泥水平衡盾构泥浆配比优化研究与应用[J]. 岩土力学, 2020, 41(12): 4054-4062.
	SONG Yang, LI Ang, WANG Weiyi, et al. Research and application of mud proportioning optimization of slurry balance shield in mudstone and gravel composite stratum[J]. Rock and Soil Mechanics, 2020, 41(12): 4054-4062.
[5]	王林, 韩凯航, 郭彩霞, 等. 考虑局部失稳的盾构隧道开挖面挤出破坏数值模拟与理论分析[J]. 土木工程学报, 2020, 53 (Sup.1): 50-56.
	WANG Lin, HAN Kaihang, CUO Caixia, et al. Numerical simulation and theoretical analysis of passive failure mechanism of shield tunnel face considering partial instability[J]. China Civil Engineering Journal, 2020, 53 (Sup.1): 50-56.
[6]	宋洋, 王韦颐, 杜春生. 砂-砾复合地层盾构隧道开挖面稳定模型试验与极限支护压力研究[J]. 岩土工程学报, 2020, 42(12): 2206-2214.
	SONG Yang, WANG Weiyi, DU Chunsheng. Model tests on stability and ultimate support pressure of shield tunnel in sand-gravel composite stratum[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(12): 2206-2214.
[7]	牛豪爽, 翁效林, 余航飞, 等. 渗流作用下粉砂地层中盾构隧道开挖面失稳模式离心试验研究[J]. 土木工程学报, 2020, 53(Sup.1): 99-104.
	NIU Haoshuang, WENG Xiaolin, YU Hangfei, et al. Centrifugal test study on instability mode of shield tunnel excavation face in silty sand stratum under seepage[J]. China Civil Engineering Journal, 2020, 53 (Sup.1): 99-104.
[8]	杨峰, 何诗华, 吴遥杰, 等. 非均质黏土地层隧道开挖面稳定运动单元上限有限元分析[J]. 岩土力学, 2020, 41(4): 1412-1419.
	YANG Feng, HE Shihua, WU Yaojie, et al. Tunnel face stability analysis by the upper-bound finite element method with rigid translatory moving element in heterogeneous clay[J]. Rock and Soil Mechanics, 2020, 41(4): 1412-1419.
[9]	米博, 项彦勇. 砂土地层浅埋盾构隧道开挖渗流稳定性的模型试验和计算研究[J]. 岩土力学, 2020, 41(3): 837-848.
	MI Bo, XIANG Yanyong. Model experiment and calculation analysis of excavation-seepage stability for shallow shield tunneling in sandy ground[J]. Rock and Soil Mechanics, 2020, 41(3): 837-848.
[10]	代仲海, 胡再强. 穿越紧邻隧道时盾构开挖面稳定性分析[J]. 中国公路学报, 2020, 33(1): 145-152. doi: 10.19721/j.cnki.1001-7372.2020.01.015
	DAI Zhonghai, HU Zaiqiang. Stability analysis of excavation face during shield passing through adjacent tunnel[J]. China Journal of Highway and Transport, 2020, 33(1): 145-152. doi: 10.19721/j.cnki.1001-7372.2020.01.015
[11]	程红战, 陈健, 胡之锋, 等. 考虑砂土抗剪强度空间变异性的盾构开挖面稳定性分析[J]. 岩土力学, 2018, 39(8): 3047-3054.
	CHENG Hongzhan, CHEN Jian, HU Zhifeng, et al. Face stability analysis for a shield tunnel considering spatial variability of shear strength in sand[J]. Rock and Soil Mechanics, 2018, 39(8): 3047-3054.
[12]	ESHRAGHI A, ZARA S. Face stability evaluation of a TBM-driven tunnel in heterogeneous soil using a probabilistic approach[J]. International Journal of Geomechanics, 2015, 15(6): 04014095. doi: 10.1061/(ASCE)GM.1943-5622.0000452 URL
[13]	朱明听, 张庆松, 李术才, 等. 劈裂注浆加固土体的数值模拟和试验研究[J]. 中南大学学报(自然科学版), 2018, 49(5): 1213-1220.
	ZHU Mingting, ZHANG Qingsong, LI Shucai, et al. Numerical simulation and experimental study on soil split grouting reinforcement mechanism[J]. Journal of Central South University(Science and Technology), 2018, 49(5): 1213-1220.
[14]	陈锦剑, 王建华, 朱峰. 软土地区单桩沉降的简化计算方法[J]. 上海交通大学学报, 2006, 40(12): 2126-2129.
	CHEN Jinjian, WANG Jianhua, ZHU Feng. A simplified calculation for the settlement of single piles in soft foundation[J]. Journal of Shanghai Jiao Tong University, 2006, 40(12): 2126-2129.

地层类型	土层名称	厚度/m	弹性模量/MPa	内摩擦角/(°)	黏聚力/kPa	泊松比	重度/(kN·m^-3)
全风化地层	素填土	9.0	2.5	7.0	12.0	0.20	19.0
	粉质黏土	8.0	36.2	20.0	10.6	0.25	19.0
	全风化砂岩	15.5	60.0	23.1	9.6	0.32	20.0
	强风化砂岩	7.5	70.0	32.5	2.0	0.28	21.0
	中风化砂岩	20.0	80.0	35.0	3.0	0.27	23.0
上软下硬地层	素填土	2.0	2.5	7.0	12.0	0.20	19.0
	粉质黏土	24.0	36.2	20.0	10.6	0.25	19.0
	全风化二长花岗岩	26.0	108.8	21.3	18.2	0.32	21.0

单元名称	外径/m	厚度/m	弹性模量/GPa	泊松比	重度/(kN·m^-3)
衬砌	8.5	0.4	30.5	0.25	25.0
桩	1.016	0.014	200.0	0.26	78.4

土层名	计算参数
土层名	加固高度/m	弹性模量/MPa	内摩擦角/(°)	黏聚力/kPa	泊松比	重度/(kN·m^-3)
全风化砂岩	6.5	176.4	24.1	30.4	0.32	20
粉质黏土	4.5	106.3	20.0	33.7	0.25	19
全风化二长花岗岩	2.0	319.7	22.0	58.0	0.32	21

钢管桩-注浆加固盾构换刀区稳定性分析

Stability Analysis of Shield Cutter Replacement Ground Reinforced with Steel Pipe Pile-Grouting

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 16

参考文献 14

相关文章 2

编辑推荐

Metrics

本文评价

[1]	李登, 庄欠伟, 黄昕, 周东荣, 朱小东, 张弛, 魏良孟. 竖向小曲率半径曲线顶管掘进管节-土体相互作用[J]. 上海交通大学学报, 2023, 57(S1): 69-79.
[2]	周东荣, 张家铭, 庄欠伟, 黄昕, 翟一欣, 朱小东, 张弛, 张子新. 曲线顶管底幕法施工对沉船扰动的CEL数值模拟[J]. 上海交通大学学报, 2023, 57(S1): 60-68.