岩质边坡侧压力问题初探
|
摘要
在岩土工程界确定岩质边坡侧压力主要是根据国标《建筑边坡工程技术规范》(GB 50330—2002)的有关规定分有外倾结构面和无外倾结构面两种情况分别计算取其大值作为边坡支护侧压力,这种侧压力确定方法存在与岩质边坡破坏模式、与库仑理论的前提条件(特别是达到主动状态时的位移量)、与边坡稳定性(安全度)不符等诸多问题,通过分析后建议取消岩质边坡侧压力的概念而采用边坡稳定性综合分析方法确定支护压力进行边坡支护预设计并通过在边坡施工中的变形监测来校核和调整预设计的思路,使边坡支护设计和施工更趋合理。
In the geotechnical engineering,the lateral pressure of rock slope is determined mainly based on the national standard "Technical code for building slope engineering"(GB 50300—2002) with relevant provisions for two cases as with or without outdip structural plane and the greater value is taken as the slope supporting lateral pressure.This lateral pressure calculation method is not coincident with the rock slope failure modes and prerequisite for Coulomb theory(in particular,the displacement in active state) and slope stability(safety degree) and other issues;through the analysis of rock slope,an abolition of the concept of rock slope lateral pressure is proposed and the slope stability comprehensive analysis method is used to determine the supporting pressure for the pre-design of slope support and to check and adjust the pre-design ideas in construction by the slope deformation monitoring,so that the slope support design and construction could be more reasonable.
In the geotechnical engineering,the lateral pressure of rock slope is determined mainly based on the national standard "Technical code for building slope engineering"(GB 50300—2002) with relevant provisions for two cases as with or without outdip structural plane and the greater value is taken as the slope supporting lateral pressure.This lateral pressure calculation method is not coincident with the rock slope failure modes and prerequisite for Coulomb theory(in particular,the displacement in active state) and slope stability(safety degree) and other issues;through the analysis of rock slope,an abolition of the concept of rock slope lateral pressure is proposed and the slope stability comprehensive analysis method is used to determine the supporting pressure for the pre-design of slope support and to check and adjust the pre-design ideas in construction by the slope deformation monitoring,so that the slope support design and construction could be more reasonable.
引文
[1]重庆市设计院.建筑边坡工程技术规范(GB 50330—2002)[S].北京:中国建筑工业出版社,2002.
[2]中国建筑科学研究院。建筑地基基础设计规范(GB5007—2002)[S].北京:中国建筑工业出版社,2002.
[3]冶金工业部建筑研究总院。建筑基坑工程技术规范(YB 9258—97)[S].
[4]陈仲颐,周景星,王洪瑾.土力学[M].北京:清华大学出版社,1992.
[5]黄秋顺.边坡工程[M].重庆:重庆大学出版社,2003.
[6]地基与基础(第三版)[M].北京:高等教育出版社,2004.
[7]方玉树.边坡支护结构荷载取值问题研究[J].工程地质学报,2007,2(15):200-204.
[8]杨淑碧,董孝壁.重庆市中心区危岩稳定性研究[M].成都:成都科技大学出版社,1994.
[9]张雷,张振.边坡工程建设安全评估方法研究[J].地下空间工程学报,2006,2(1):56-59.
[10]王余庆,辛鸿博,等.预测岩土边坡地震崩溃的初判准则研究[R].冶金工业部建筑研究总院,1997.
[2]中国建筑科学研究院。建筑地基基础设计规范(GB5007—2002)[S].北京:中国建筑工业出版社,2002.
[3]冶金工业部建筑研究总院。建筑基坑工程技术规范(YB 9258—97)[S].
[4]陈仲颐,周景星,王洪瑾.土力学[M].北京:清华大学出版社,1992.
[5]黄秋顺.边坡工程[M].重庆:重庆大学出版社,2003.
[6]地基与基础(第三版)[M].北京:高等教育出版社,2004.
[7]方玉树.边坡支护结构荷载取值问题研究[J].工程地质学报,2007,2(15):200-204.
[8]杨淑碧,董孝壁.重庆市中心区危岩稳定性研究[M].成都:成都科技大学出版社,1994.
[9]张雷,张振.边坡工程建设安全评估方法研究[J].地下空间工程学报,2006,2(1):56-59.
[10]王余庆,辛鸿博,等.预测岩土边坡地震崩溃的初判准则研究[R].冶金工业部建筑研究总院,1997.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心