[1]刘 林,李雅丽,薛 茜,等.交叉预应力锚索加固损伤支护桩现场试验研究[J].西安建筑科技大学学报(自然科学版),2021,53(01):24-32.[doi:10.15986/j.1006-7930.2021.01.004]
　LIU Lin,LI Yali,XUE Qian,et al.Field test study on reinforcement of damaged supporting pile with crossprestressed anchor cables[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(01):24-32.[doi:10.15986/j.1006-7930.2021.01.004]
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交叉预应力锚索加固损伤支护桩现场试验研究()
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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:
53
期数:
2021年01期
页码:
24-32
栏目:
出版日期:
2021-02-28

文章信息/Info

Title:
Field test study on reinforcement of damaged supporting pile with crossprestressed anchor cables
文章编号:
1006-7930(2021)01-0024-09
作者:
刘 林1; 李雅丽2; 3; 薛 茜2; 3; 等
(1.中铁二十局集团第六工程有限公司,陕西 西安 710032; 2.西安建筑科技大学 土木工程学院,陕西 西安 710055; 3.陕西省岩土与地下空间工程重点实验室,陕西 西安 710055)
Author(s):
LIU Lin1;  LI Yali2; 3;  XUE Qian2; 3;  et al
(1.No.6 Engineering Corporation Limited of CR20G, Xi’an 710032, China; 2.College of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China; 3.Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China)
关键词:
地下空间工程;  湿陷性黄土;  预应力锚索;  损伤支护桩;  加固技术
Keywords:
underground space engineering;  collapsible loess;  prestressed anchor cable;  damaged supporting pile;  reinforcement technology
分类号:
TU392.6
DOI:
10.15986/j.1006-7930.2021.01.004
文献标志码:
A
摘要:
以典型工程为背景,开展了交叉预应力锚索加固损伤支护桩的现场试验研究,采用数值模拟与现场监测数据相结合的方法,对交叉预应力锚索加固湿陷性黄土深基坑损伤支护桩的效果进行了分析,并对支护桩的桩顶侧移、竖向位移和地表沉降的变化规律进行了研究.研究表明:采用交叉预应力锚索加固损伤支护桩,可有效增加桩体的稳定性,减少基坑开挖或盾构掘进等施工过程对支护桩作用范围内的土体扰动,且成本低廉、便于施工,可作为黄土地区城市地下综合体交叉施工过程中桩体破坏加固的有效途径.
Abstract:
Based on a typical project, the field test research on the reinforcement of damaged supporting pile with cross prestressed anchor cable is carried out. By combining numerical simulation with field monitoring data, this paper analyzes the effect of cross prestressed anchor cable strengthening the damaged supporting pile of collapsible loess deep foundation pit, and the variation rules of pile top horizontal displacement, vertical displacement and ground displacement are studied.Results show that the cross prestressed anchor cable can effectively increase the stability of the pile body, reduce the soil disturbance caused by the construction process of foundation pit excavation or shield tunneling,at low cost and is convenient for construction. It can be used as an effective way to reinforce the damaged pile body in the cross construction process of urban underground complex in loess area.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-12-11 修改稿日期:2020-01-13
基金项目:陕西省自然科学基础研究计划基金资助项目(2016JQ5091)
第一作者:刘林(1973-),男,高级工程师,主要从事施工建设管理工作.E-mail:346253750@qq.com
更新日期/Last Update: 2021-02-28