h型抗滑桩和悬臂式双排抗滑桩的力学特性分析

何刚; 郑琦七; 杨松; 李登峰; 梅雪峰; 李泽洲

doi:10.3724/j.gyjzG22092609

h型抗滑桩和悬臂式双排抗滑桩的力学特性分析

doi: 10.3724/j.gyjzG22092609

1. 中国五冶集团有限公司, 成都 610000;
2. 中交第二航务工程局有限公司, 武汉 430040;
3. 山东理工大学建筑工程学院, 山东淄博 255049;
4. 中铁十一局集团第五工程有限公司, 重庆 400037

基金项目:

山东省自然科学基金项目(ZR2021QE209)。

详细信息

作者简介:
何刚,学士,高级工程师,dengf888@163.com。

通讯作者:
郑琦七,学士,高级工程师,347832087@qq.com。

计量
- 文章访问数: 38
- HTML全文浏览量: 3
- PDF下载量: 2
- 被引次数: 0
出版历程
- 收稿日期: 2022-09-26
- 网络出版日期: 2024-06-22

Analysis on Mechanical Characteristics of h-Type Anti-Slide Piles and Cantilevered Double-Row Anti-Slide Piles

1. China MCC5 Group Corp., Ltd., Chengdu 610000, China;
2. CCCC Second Harbor Engineering Company Ltd., Wuhan 430040, China;
3. School of Architectural Engineering, Shandong University of Technology, Zibo 255049, China;
4. The 5 th Engineering Ltd., The 11 th Engineering Bureau of China Railway, Chongqing 400037, China

摘要

摘要: 为探索h型抗滑桩和双排抗滑桩中较优的抗滑结构形式,利用有限元软件MIDAS/GTS,分别建立了h型抗滑桩和双排抗滑桩的三维有限元分析模型,并对比分析了两种抗滑桩结构的桩身位移、内力分布以及坡体支挡效果。结果表明:1)h型抗滑桩与双排桩抗滑桩在桩身位移、内力均存在显著差异。在协调前、后排桩弯矩、剪力和减小桩身位移方面,h型抗滑桩较双排桩表现更优;2)h型抗滑桩支护后,较双排抗滑桩支护更显著,边坡稳定安全系数提高了21.8%、最大剪应变降低了63.6%;3)理论计算的h型抗滑桩前后排桩内力分布,较双排桩更合理,表明了h型抗滑桩协调内力的优势。
- h型抗滑桩 /
- 双排抗滑桩 /
- 数值模拟 /
- 力学特性 /
- 理论计算
Abstract: To explore a better anti-sliding structure between h-type anti-slide piles and cantilevered double-row anti-slide piles, the finite element software MIDAS/GTS was used and the three-dimensional finite element analysis models for h-type anti-slide piles and cantilevered double-row anti-slide piles were constructed. Then, the displacement, internal force of piles and slope support effect of the two anti-slide pile structures were compared and analyzed. The results showed that: 1) There were significant differences between the two types of anti-slide pile systems in terms of displacement and internal force of piles. Compared with cantilevered double-row anti-slide piles, h-type anti-slide piles were better to coordinate flexural moment and shear force of the front and rear piles, as well as displacement of piles. 2) Compared with cantilevered double-row anti-slide piles, the support effect of h-type anti-slide piles was more significant. The safety factor of slope stability increased by 21.8%, simultaneously, the maximum shear strain decreased by 63.6%. 3) Compared with the cantilevered double-row anti-slide piles, the theoretical calculations on internal force of the front and rear piles in the h-type anti-slide pile systems were more reasonable. It also showed the advantage of h-type anti-slide piles in coordination of the internal force.
- h-type anti-slide pile /
- double-row anti-slide pile /
- numerical simulation /
- mechanical property /
- theoretical calculation

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参考文献(13)

[1]	李绵绵,赵法锁,宋飞,等. 双排抗滑桩的受力特性研究:以柳家坡2号滑坡治理工程为例[J]. 西北地质,2019,52(2):181-189.
[2]	罗勇,姜波,李春峰,等. h型抗滑桩滑坡治理中的变形特性及内力研究[J].地下空间与工程学报,2017,13(6):1702-1710.
[3]	张静. 双排桩自稳式基坑支护结构计算方法研究[J]. 建筑结构,2021,51(增刊2):1519-1522.
[4]	LIU X R, KOU M MI, FENG H, et al. Experimental and numerical studies on the deformation response and retaining mechanism of h-type anti-sliding piles in clay landslide[J]. Environmental Earth Sciences,2018,77(5):1-12.
[5]	MA X C, XIAO Y, LU M. Model test of cantilevered double-row anti-sliding piles in steeply slipping landslides[C/OL]// IOP Conference Series: Earth and Environmental Science.2020 [2022-09-26]. https://doi.org/10.1088/1755-1315/570/6/062015.
[6]	宁宇,黄青富,郝李坤,等. 联合h型桩在滑坡体阻滑中应用数值模拟研究[J].科学技术与工程,2021,21(23):10004-10012.
[7]	董必昌,张哲,付绍卿. 双向地震作用下的双排桩边坡力学性状研究[J].公路,2017,62(12):90-95.
[8]	温祥虎,叶四桥,毛晓光. 悬臂式双排桩与承台式双排桩的对比研究[J].公路工程,2016,41(2):251-255.
[9]	申永江,杨明,项正良. 双排长短组合桩与常见双排桩的对比研究[J].岩土工程学报,2015,37(增刊2):96-100.
[10]	申永江,孙红月,尚岳全,等. 锚索双排桩与刚架双排桩的对比研究[J].岩土力学,2011,32(6):1838-1842.
[11]	邹盛堂,戴自航. 双排抗滑桩与门架抗滑桩的有限元分析对比[J]. 广西大学学报(自然科学版),2012,37(4):769-774.
[12]	康景文,刘昌清,邓夷明,等. 地震力作用下单排与双排桩支挡结构性状试验对比分析[J]. 地震工程学报,2021,43(1):195-204.
[13]	中华人民共和国国家铁路局.铁路路基支挡结构设计规范:TB 10025—2019 [S].北京:中国铁道出版社,2019.