[1]黄建华、王蕴晨、杨鹿鸣.滨海软土浅埋大断面矩形顶管施工力学分析[J].福建工程学院学报,2020,18(03):211-217.[doi:10.3969/j.issn.1672-4348.2020.03.002]
　HUANG Jianhua,WANG Yunchen,YANG Luming.Analysis of construction mechanics of shallow-buried large-section rectangular pipe jacking in coastal soft soil strata[J].Journal of FuJian University of Technology,2020,18(03):211-217.[doi:10.3969/j.issn.1672-4348.2020.03.002]
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滨海软土浅埋大断面矩形顶管施工力学分析()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第18卷
期数:
2020年03期
页码:
211-217
栏目:
出版日期:
2020-06-25

文章信息/Info

Title:
Analysis of construction mechanics of shallow-buried large-section rectangular pipe jacking in coastal soft soil strata
作者:
黄建华、王蕴晨、杨鹿鸣
福建工程学院土木工程学院
Author(s):
HUANG Jianhua;  WANG Yunchen;  YANG Luming
School of Civil Engineering, Fujian University of Technology
关键词:
大断面矩形顶管; 浅埋; 滨海软土地层; 地表沉降; 应力变化
Keywords:
large-section rectangular pipe jacking;  shallow burial;  coastal soft soil strata;  surface settlement;  stress variation
分类号:
TU43
DOI:
10.3969/j.issn.1672-4348.2020.03.002
文献标志码:
A
摘要:
分析了滨海软土地层下浅埋大断面矩形顶管施工力学特性，结合顶管工程现场沉降监测数据的整理与有限元模拟结果的验证对比，系统研究了滨海软土层浅埋大断面矩形顶管顶进过程的地表沉降变形以及顶管应力的变化规律。 结果表明，地表隆起受顶推力的影响，地表沉降由地层损失产生?随顶管的顶进，顶管的应力变化速率逐渐降低最终趋于平稳，顶管的侧面最大正应力比顶部应力稍大，顶管底部的最大正应力相对顶部和侧面都有较大的提升。
Abstract:
Analysis was conducted for the construction mechanics of the shallow-buried large-section rectangular pipe jacking under the coastal soft soil layer. By combining the collection of the settlement monitoring data and the verification by the finite element simulation results in the pipe jacking project, a systematic study was conducted for the surface settlement deformation and the change of the pipe jacking stress in the whole process of the shallow-buried large-section rectangular pipe jacking in the coastal soft soil layer. Results show that surface uplift is affected by top thrust, and surface settlement is caused by the formation loss; with the jacking going on, the stress change rate of the pipe jacking decreases gradually and finally tends to be stable; the maximum normal stress of the side of the pipe jacking is slightly larger than that of the top, and the maximum normal stress of the bottom is relatively higher than that of the top and the side.

参考文献/References:

[1] 冯海宁. 顶管施工环境效应影响及对策[D]. 杭州: 浙江大学, 2003.[2] 彭立敏, 王哲, 叶艺超, 等. 矩形顶管技术发展与研究现状[J]. 隧道建设, 2015, 35(1): 1-8.[3] 魏纲, 徐日庆, 黄斌. 长距离顶管管道的失稳分析[J]. 岩石力学与工程学报, 2005, 24(8): 1427-1432.[4] 魏纲, 吴华君, 陈春来. 顶管施工中土体损失引起的沉降预测[J]. 岩土力学, 2007(2): 359-363.[5] ADDENBROOKE T, POTTS D. Twin tunnel interaction: surface and subsurface effects[J].The International Journal of Geomechanics, 2001, 1(2): 249-271.[6] SOTIANOS A, LOUKAS P, CHANTZKOS C. Pipe-jacking a sewer under Athens[J].Tunneling and Underground Space Technology, 2004(19): 193-203.[7] 魏纲, 周洋, 魏新江. 盾构隧道施工引起的工后地面沉降研究[J]. 岩石力学与工程学报, 2013, 32(S1): 2891-2896.[8] 庞臣军, 鲍先凯. 矩形顶管施工的数值模拟研究[J]. 施工技术, 2013, 42(S1): 407-412.[9] 喻军, 龚晓南. 考虑顶管施工过程的地面沉降控制数值分析[J]. 岩石力学与工程学报, 2014, 33(S1): 2605-2610.[10] 董俊. 地铁过街通道矩形顶管施工变形监测分析[J]. 铁道工程学报, 2016, 33(8): 106-110.[11] 邓长茂, 彭基敏, 沈国红. 软土地区矩形顶管施工地表变形控制措施探讨[J]. 地下空间与工程学报, 2016, 12(4): 1002-1007.[12] 张振. 超大矩形断面顶管隧洞开挖引起的地表沉降研究[D].郑州: 华北水利水电大学, 2016.[13] 赖金星, 王开运, 侯丹丹, 等. 砂土地层顶管施工土体变形规律三维数值分析[J]. 西安科技大学学报, 2015, 35(4): 450-457.[14] 银英姿, 赵强, 崔芳静, 等. 土压平衡矩形顶管施工引起的地表沉降探究[J]. 长江科学院院报, 2019, 36(1): 95-101.

更新日期/Last Update: 2020-06-25