| 悬臂式围护桩受力性状与土压力试验研究 |
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| 引用本文： | 黄雪峰,张蓓,覃小华,李旭东.悬臂式围护桩受力性状与土压力试验研究[J].岩土力学,2015,36(2):340-346. |
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| 作者姓名： | 黄雪峰 张蓓 覃小华 李旭东 |
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| 作者单位： | 1.后勤工程学院 土木工程系，重庆 401311；2.后勤工程学院 岩土力学与地质环境保护重庆市重点市重点实验室，重庆 401311 |
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| 摘 要： | 为研究悬臂式围护桩结构的受力性状和土压力分布特点,结合西宁火车站改造工程,对该深基坑支护结构在不同开挖工况条件下,悬臂桩的受力性状与内力传递特征进行动态的现场试验。试验结果表明:悬臂桩的受力特征与理论值有所差异,在实际设计中,可对其在配筋方式、混凝土设计、嵌固段长度等方面进行优化,实测土压力小于朗肯土压力,与经典土压力理论有显著区别。该试验结果可以有效优化桩身设计,为软岩基坑支护结构在开挖过程中的受力及变形提供理参考性依据。
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| 关 键 词： | 悬臂桩 桩身内力 优化 土压力 |
| 收稿时间： | 2013-10-16 |
Experimental investigation on force behavior and earth pressure of cantilever fender pile |
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| HUANG Xue-feng,ZHANG Bei,QIN Xiao-hua,LI Xu-dong.Experimental investigation on force behavior and earth pressure of cantilever fender pile[J].Rock and Soil Mechanics,2015,36(2):340-346. |
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| Authors: | HUANG Xue-feng ZHANG Bei QIN Xiao-hua LI Xu-dong |
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| Institution: | 1. Department of Civil Engineering, Logistical Engineering University, Chongqing 401311, China; 2. Chongqing Key Laboratory of Geomechanics &; Geoenvironmental Protection, Logistical Engineering University, Chongqing 401311, China |
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| Abstract: | This paper aims to study the development and distribution features of the force and earth pressure of cantilever fender pile. Data used in this paper are obtained from the field experiment on the construction site of Xining railway station; and an analysis is carried out on the basis of these data. The behavior of cantilever fender pile under different excavations and the development of internal force are presented. Experimental data obtained from the field test are different from the theoretical values, so it is necessary and feasible to adjust and optimize the reinforcement, concrete design and embedment depth. Strategies for optimization are put forward. The experimental earth pressure is less than the Rankine pressure of the classical earth pressure theory. Results of this paper can effectively optimize the pile design, and can also provide monitoring and controlling for the force and deformation of supporting structure in soft rock pit excavation. |
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| Keywords: | cantilever pile pile internal force optimization earth pressure |
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