›› 2018, Vol. 39 ›› Issue (4): 1197-1202.doi: 10.16285/j.rsm.2016.0993

• 基础理论与实验研究 • 上一篇    下一篇

滑体段采用m法模型的抗滑桩计算方法

毛坚强1,徐 骏2,杨 磊1   

  1. 1. 西南交通大学 土木工程学院,四川 成都 610031;2. 中国中铁二院工程集团有限责任公司科学技术研究院,四川 成都 610031
  • 收稿日期:2016-05-03 出版日期:2018-04-11 发布日期:2018-06-06
  • 作者简介:毛坚强,男,1964年生,博士,教授,主要从事岩土力学及其工程应用方面的研究工作。

An improved method for stabilising pile by using m-method model to the whole pile

MAO Jian-qiang1, XU Jun2, YANG Lei1   

  1. 1. School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 2. Science and Technology Research Institute, China Railway Eryuan Engineering Group Co., Ltd., Chengdu, Sichuan 610031, China
  • Received:2016-05-03 Online:2018-04-11 Published:2018-06-06

摘要: 在目前的抗滑桩设计计算方法中,多将抗滑桩与滑体间的作用力简化为已知荷载,而忽略了该力与桩位移直接相关的特点。对目前的计算模型进行了改进,采用m法模型模拟桩前滑体对桩的抗力,并分别对桩在滑面以上、以下的部分建立计算方程,应用幂级数法解得其位移及内力的表达式,再利用桩的上、下段在滑面处的变形协调条件,求得该截面的弯矩和剪力,最终得到整个桩的变形和内力以及桩、土之间的作用力。最后,分别应用该方法和有限元法对一算例进行计算,其结果吻合很好,证明了该方法的正确性。

关键词: 抗滑桩, 滑体, m法, 幂级数法

Abstract: For the existing calculation methods for the stabilising pile, the interaction between pile and landslide body is simplified as the determined load. However, these methods all ignore the direct dependence of the interaction on the displacement of the pile. This study developed a method, in which m-method model was employed to simulate the interaction between landslide body and pile. Meanwhile, equations were established for the piles above and below the slip surface respectively, and their expressions of displacement and internal force were also solved with power series method. Meanwhile, the bending moment and shear force at the slip surface were obtained by using deformation coordinating conditions of the upper and lower piles at the sliding surface. Hence, the deformation, internal force of the pile and the interaction between pile and landslide body were easily computed. Finally, an example was calculated by the presented method and FEM, respectively. It was found that results were in good agreement, which verified the correctness of the method.

Key words: stabilising pile, landslide body, m-method, power series method

中图分类号: 

  • TU 473

[1] 邓涛, 林聪煜, 柳志鹏, 黄明, 陈文菁, . 大位移条件下水平受荷单桩的简明弹塑性计算方法[J]. 岩土力学, 2020, 41(1): 95-102.
[2] 孙来宾, 肖世国, . 抗滑桩受荷段前侧有限范围地层的 地基抗力系数取值方法[J]. 岩土力学, 2020, 41(1): 278-284.
[3] 陈冲, 王卫, 吕华永, . 基于复合抗滑桩模型加固边坡稳定性分析[J]. 岩土力学, 2019, 40(8): 3207-3217.
[4] 魏少伟, 隋颜阳, 杨建民, . 圆形与矩形截面抗滑桩抗滑性能的模型试验研究[J]. 岩土力学, 2019, 40(3): 951-961.
[5] 张玲, 陈金海, 赵明华. 考虑土拱效应的悬臂式抗滑桩最大桩间距确定[J]. 岩土力学, 2019, 40(11): 4497-4505.
[6] 雷 达, 蒋关鲁, 孙圣杰, 戚志慧, 李安洪, . 基于振动台试验的抗滑桩加固斜坡桥基研究[J]. 岩土力学, 2019, 40(1): 127-134.
[7] 马显春, 罗 刚, 邓建辉, 上官力, . 陡倾滑面堆积层滑坡抗滑桩锚固深度研究[J]. 岩土力学, 2018, 39(S2): 157-168.
[8] 储召军,石少卿,孙建虎,李 季,崔廉明,. 基于模型试验的桩间距对组合式钢管抗滑桩抗滑效果的影响分析[J]. , 2018, 39(3): 848-853.
[9] 郑 桐,刘红帅,袁晓铭,涂杰文,汤爱平,齐文浩,. 悬臂抗滑桩静、动力学性能试验的全过程[J]. , 2018, 39(3): 854-862.
[10] 陈昌富, 曾松林, 刘一俊. 考虑预应力损失桩-锚结构内力计算的加权残值法[J]. 岩土力学, 2018, 39(12): 4569-4576.
[11] 付 晓,张建经,周立荣,. 多级框架锚索和抗滑桩联合作用下边坡抗震性能的振动台试验研究[J]. , 2017, 38(2): 462-470.
[12] 卢坤林,王运敏,朱大勇,. 三维滑体锚固力计算方法及工程应用[J]. , 2017, 38(2): 501-506.
[13] 尹 静,邓荣贵,王金梅,王园园,李凯甜,. 锚索抗滑桩内力计算的传递矩阵法[J]. , 2017, 38(12): 3517-3523.
[14] 董曼曼,王亮清,葛云峰,王 聪. 考虑滑床复合倾斜岩体综合地基系数的抗滑桩受力特征研究[J]. , 2017, 38(10): 3000-3008.
[15] 范志强,唐辉明,汪丁建,刘 凯,温 韬. 考虑土体应变软化特性的滑坡抗滑桩设计推力研究[J]. , 2016, 37(S2): 665-672.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!