IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleStudy on the Mechanism of a Kind of Pre-reinforced Pile
何思明1; 罗渝1,2; 何尽川3
Corresponding Author罗渝
Source Publication四川大学学报(工程科学版)
Other Abstract高切坡超前支护桩能有效地抑制边坡的变形,确保开挖边坡的稳定性。但常规钢筋混凝土超前支护桩的刚度大,导致施加在桩体上的土压力较大,为解决这一问题,提出在超前支护桩体靠山侧设置一层EPS垫层材料以降低超前支护桩与变形坡体之间的作用力。采用数值分析方法,研究了EPS垫层材料类型、厚度、刚度对超前支护桩土压力、桩身变形以及桩身内力的影响,揭示了EPS垫层材料对超前支护桩作用机制的影响。研究结果表明:EPS垫层的厚度和密度对超前支护桩桩土共同作用有显著影响。超前支护桩后布置的EPS垫层厚度越大,超前支护桩上的土压力越小,桩身位移越小,桩身内力越小;超前支护桩后布置的EPS垫层密度越小,超前支护桩上的土压力越小,桩身位移越小,桩身内力越小。 

Pre-reinforced pile in high cutting slope can reduce the displacement of the slope and ensure the stabilization of the slope. Because of the largely structural stiffness of concrete pre-reinforced pile, the earth pressure acting on pile increases. In order to settle this problem, a layer of EPS backs on to the pre-reinforced pile was set to decrease the interaction force of pre-reinforced piles. Finite element analysis software of ANSYS was used to analyze the value and distribution of displacement, shearing force and bending moment acted on the pre-embedded pile with different thickness and types of EPS backs on to the pre-reinforced pile. The results showed that the thickness and types of EPS have large influence on pre-reinforced piles. With the increase of the thickness of EPS, the earth pressure acting on pile decreases, the displacement of pre-reinforced pile decreases, and the inner force of pre-reinforced pile decreases. With the decrease of the density of EPS, the earth pressure acting on pile decreases, the displacement of pre-reinforced pile decreases, and the inner force of pre-reinforced pile decreases.

Keyword超前支护桩 Eps 材料 高切坡 数值模拟
Subject AreaTu473.1
Indexed ByEI ; CSCD ; 北大中文核心
Funding Organization国家自然科学基金资助项目(40872181) ; 交通部西部科技项目(2008-318-792-85)
Accession numberAccession number:20115114614691
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
何思明,罗渝,何尽川. 一种高切坡超前支护桩的作用机制[J]. 四川大学学报(工程科学版),2011,43(6):79-84.
APA 何思明,罗渝,&何尽川.(2011).一种高切坡超前支护桩的作用机制.四川大学学报(工程科学版),43(6),79-84.
MLA 何思明,et al."一种高切坡超前支护桩的作用机制".四川大学学报(工程科学版) 43.6(2011):79-84.
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