[1]张学钢,张丹锋,刘 可,等.隧道临近既有铁路桥桩基施工扰动影响的数值分析研究[J].西安建筑科技大学学报:自然科学版,2015,47(02):217-0223.[doi:10.15986/j.1006-7930.2015.02.012]
　ZHANG Xuegang,ZHANG Danfeng,LIU Ke,et al.Influence of the metro undercut excavation tunnel construction on existing railway bridge pile foundation[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,47(02):217-0223.[doi:10.15986/j.1006-7930.2015.02.012]
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隧道临近既有铁路桥桩基施工扰动影响的数值分析研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年02期
页码:
217-0223
栏目:
出版日期:
2015-04-28

文章信息/Info

Title:
Influence of the metro undercut excavation tunnel construction on existing railway bridge pile foundation
文章编号:
1006-7930(2015)02-0217-07
作者:
张学钢1; 张丹锋2; 刘 可2; 黄阿岗王1; 胡利平2; 3
(1. 陕西铁路工程职业技术学院, 陕西 渭南 714000;2.西安建筑科技大学土木工程学院,陕西 西安 710055; 3. 中国铁建大桥工程局集团有限公司, 天津 300300 )
Author(s):
ZHANG Xuegang 1;  ZHANG Danfeng 2;  LIU Ke2 ;  HUANG Egangwang 1HU Liping 2; 3
(1. Shaanxi Railway Institute, Shaanxi Weinan 714000China2. School of Civil EngineeringXi’an Univof Arch.&Tech. Xi’an 710055China3. China Railway Construction Bridge Engineering Bureau Group Co. LTD. Tianji 300300China)
关键词:
地铁工程; 暗挖隧道; 既有桩基; 数值分析
Keywords:
metro engineering;  undercut excavation tunnel;  existing pile foundation;  numerical analysis
分类号:
TU31213; TU31211
DOI:
10.15986/j.1006-7930.2015.02.012
文献标志码:
A
摘要:
针对哈尔滨地铁1号线哈尔滨南站至农科院站区间暗挖隧道设计与施工方案，运用有限元方法，采用数值模拟地铁暗挖隧道上下台阶法施工，同时上行线超前下行线20 m，分析研究其对上部铁路桥桩基力学与位移影响变化规律．研究结果表明，地铁开挖使上部铁路桥桩基桩侧呈负摩阻力状态，并随开挖掌子面的临近，桩基轴力、侧表面摩阻力和位移都呈增大趋势，变化速率也逐渐加快；在垂直隧道轴线方向，随桩基与隧道距离的减小，受力和位移变化更复杂、明显；并且开挖上台阶和后施工的下行线都对桩基影响大．研究结果可为本工程提出相应重点控制区域和关键施工工序，并为后续类似工程提供一定理论依据．
Abstract:
Based on the Harbin Metro Line 1 Harbin South station and Nongkeyuan station section undercut excavation tunnel design and construction scheme was used, by the finite element method, Numerical simulation of metro undercut excavation tunnel up-down bench cut method construction, was also applied and upgoing line advancing downgoing line 20m was analysed. The variation law of mechanics and displacement of its influence on the upper railway bridge pile foundation was studied. The research results show that the pile flank surface frictional resistance of upper railway bridge pile foundation is negative state in metro excavation, and with the excavation tunnel face near, axial force, flank surface frictional resistance and displacement of pile foundation are increased and the rate of change has gradually accelerated. In the direction of the vertical axis of tunnel, force and displacement is more complex, obviously with decreasing pile foundation and tunnel distance; The pile foundation made a big difference by excavation of up-bench cut and later, construction of downgoing line. The research results can be used for the project and put forward the corresponding key control areas and key construction procedures, and provided certain theoretical basis for the later similar engineering

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2014-09-10 修改稿日期：2015-04-15
基金项目：陕西省教育厅2013年科学研究计划(自然科学专项)项目（2013JK0990
张学钢（1976-），男，副教授，主要从事隧道与地下工程方面的教学和科研工作. E-mail：18191277018@163.com
更新日期/Last Update: 2015-09-01