[1]李志雨,何晖,郭智,等.基于桩间土拱效应的微型桩间距的分析[J].山地学报,2015,(03):326.
　LI Zhiyu,HE Hui,GUO Zhi.The Micro Pile Analysis for Interval Based on the Soil Arch Effect[J].Mountain Research,2015,(03):326.
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基于桩间土拱效应的微型桩间距的分析()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2015年03期
页码:
326
栏目:
山地灾害
出版日期:
2015-06-01

文章信息/Info

Title:
The Micro Pile Analysis for Interval Based on the Soil Arch Effect
作者:
李志雨;何晖;郭智;
西安工业大学建筑工程学院;
Author(s):
LI Zhiyu; HE Hui; GUO Zhi
Architecture College of Xi'an Technological University， Xi'an 710032，China
关键词:
微型桩; 土拱效应; 矩径比; 数值模拟
Keywords:
Micro Piles; Soil arching effect; Ratio of distance and diameter; Numerical simulation
分类号:
TU43
文献标志码:
A
摘要:
通过FLAC3D软件模拟计算和分析陕南勉县的微型桩治理滑坡工程实例,研究了微型组合抗滑桩在滑坡治理中土拱效应的形成、应力的变化状况,得出最佳距径比。结果显示:微型桩在滑坡下滑主动土压力的作用下,首先在沿滑移方向第1排桩桩间形成应力拱效应,然后随着距径比的增加,依次在第2排、第3排桩上形成应力拱效应,并且前排桩的荷载分担比明显大于后排桩的荷载分担比。当距径比达到一定程度后土体绕过第1桩,形成以第2排桩为拱顶,第3排桩为拱脚的应力拱。由模拟的应力云图得知,距径比9时,没有明显的或者不存在应力土拱效应,距径比为5~8时最为理想。
Abstract:
Through FLAC3D simulation calculation and the analysis of micro pile treating landslide engineering example in Mianxian county of Shanxi，China.This paper studies the micro combination antislide pile is condition of the stress arch effect in the formation and in the change of horizontal stress，get the best distance and diameter ratio. Results show that the micro piles in landslide falling under positive soil pressure.Soil arching effect is formed along the slide direction in the first row of between piles. Then as the increase of ratio of distance and diameter，on the second row and the third row the soil arch effect is formed，the load sharing ratio in the front row were significantly greater than the back one．After the pitch diameter ratio reaches a certain degree， the soil around the first and second row piles， it is formed vault in the second row piles and the arch foot in the third row piles for the stress．By simulating the stress nephogram，distance and diameter ratio is less than 3 and is more than 9， the soil arch effect is not clear or there is no existent， it is ideal distance and diameter ratio is ratio of 5 to 8．

参考文献/References:

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相似文献/References:

[1]孔纪名,蔡强,张引,等.单排微型桩加固碎石土滑坡物理模型试验[J].山地学报,2013,(04):399.
　KONG Jiming,CAI Qiang,ZHANG Yin,et al.Physical Model Test of Debris Landslide Reinforcement with Single Row Micropile[J].Mountain Research,2013,(03):399.

备注/Memo

备注/Memo:
收稿日期(Received date)：2013-10-30；改回日期(Accepted) : 2014-01-18。
作者简介（Biography）：李志雨（1988-），男，硕士研究生，研究方向为岩土工程设计与施工。[Li Zhiyu（1988-）,Male, Current Master Students, Current research is the design and construction of the geotechnical engineering.] E-mail:lzyminda@163.com
更新日期/Last Update: 1900-01-01