[1]王立明,郭院成,周同和..考虑开挖反弹的桩锚结构土压力计算方法研究[J].郑州大学学报(工学版),2005,26(02):76-80.[doi:10.3969/j.issn.1671-6833.2005.02.019]
　Wang Liming,GUO Yuancheng,Zhou Tonghe.Research on the calculation method of earth pressure of pile anchor structure considering excavation rebound[J].Journal of Zhengzhou University (Engineering Science),2005,26(02):76-80.[doi:10.3969/j.issn.1671-6833.2005.02.019]
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考虑开挖反弹的桩锚结构土压力计算方法研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
26
期数:
2005年02期
页码:
76-80
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Research on the calculation method of earth pressure of pile anchor structure considering excavation rebound
作者:
王立明; 郭院成; 周同和.
同济大学地下与建筑工程系,上海,200092, 郑州大学土木工程学院,河南,郑州,450002, 郑州大学综合设计研究院,河南,郑州,450002
Author(s):
Wang Liming; GUO Yuancheng; Zhou Tonghe
关键词:
岩土工程;  基坑;  土体反弹;  短期应力历史;  桩锚支护结构;  土压力;  暴露时间
Keywords:
DOI:
10.3969/j.issn.1671-6833.2005.02.019
文献标志码:
A
摘要:
桩锚支护结构中,土压力的计算未考虑支护结构位移及坑底土体的卸载反弹影响,可导致主动区土压力计算值偏小,被动区土压力计算值偏大,降低支护结构的安全度水平.以弹性长桩理论和经典土压力理论为基础,考虑施工过程坑底土体开挖反弹效应和土的短期应力历史,研究桩锚支护结构土压力的演化进程和计算方法,提出了土压力的"反零点分布"模式、"零分布"模式、"零点分布"模式、"梯形分布"模式以及"矩形分布"模式之间的相关关系及其影响因素和演化机制.指出桩锚支护结构土压力的计算应综合考虑开挖速度、各工况暴露时间以及土体反弹特性的影
Abstract:
In the pile anchor support structure, the calculation of earth pressure does not consider the displacement of the supporting structure and the unloading rebound of the soil at the bottom of the pit, which can lead to a small calculation value of earth pressure in the active area and a large calculation value of soil pressure in the passive area, which reduces the safety level of the supporting structure. Based on the theory of elastic long pile and classical earth pressure, considering the rebound effect of excavation and the short-term stress history of soil in the construction process, the evolution process and calculation method of soil pressure of pile anchor support structure are studied, and the correlation between the "inverse zero distribution" mode, "zero distribution" mode, "zero distribution" mode, "trapezoidal distribution" mode and "rectangular distribution" mode of earth pressure is proposed, as well as its influencing factors and evolution mechanism. It is pointed out that the calculation of soil pressure of pile anchor support structure should comprehensively consider the influence of excavation speed, exposure time of each working condition and soil rebound characteristics

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更新日期/Last Update: 1900-01-01