冻融循环条件下岩石–喷射混凝土组合试样的力学特性试验研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (645 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要选取2008年极端冰雪受灾地区灰色砂岩，制作岩石与C20喷射混凝土组合试样，通过冻融循环试验、单轴压缩试验、中/低不同围压三轴压缩试验、中/低不同轴压直剪试验及微观扫描试验系统研究岩石–喷射混凝土组合试样的宏观物理力学性质及微观破坏机制。试验结果揭示研究对象在不同含水状态(干燥或饱和)、不同冻融循环次数条件下的损伤模式、破坏准则及强度指标变化规律。在此基础上，建立冻融前后组合试样的损伤软化统计本构模型。经与三轴压缩试验曲线对比，该本构模型能较真实地反映破坏的全过程，可靠性较高。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩石力学, 极端冰雪灾害, 冻融, 组合试样, 破坏准则, 本构模型

Abstract：The gray sandstone from disaster area of extreme ice and snow in early 2008 is selected to make the combined specimen with gray sandstone and C20 shotcrete. Through different kinds of tests，i.e. freezing-thawing cycling test，uniaxial compression test，triaxial compression test under medium and low confining pressures，direct shear test under medium and low axial pressures，micro-scanning test，the macroscopic physico-mechanical properties of combined specimen with rock and shotcrete and its micro-damage mechanism are both studied systematically. The test results reveal the damage mode，failure criterion and variation of strength indices of the combined specimen with different water contents(dried or saturated) after different freezing-thawing cycles. Based on the above results，the damage softening statistical constitutive models for combined specimen with rock and shotcrete before and after freezing-thawing are established. By contrast with the curves of triaxial compression test，the new damage softening statistical constitutive models can truly reflect the entire damage process and the models are considered to be reliable.

Key words： rock mechanics extreme ice and snow disaster freezing-thawing combined specimen failure criterion constitutive model

收稿日期: 2010-05-13

引用本文:

项伟，刘珣. 冻融循环条件下岩石–喷射混凝土组合试样的力学特性试验研究[J]. 岩石力学与工程学报, 2010, 29(12): 2510-2521.
XIANG Wei，LIU Xun. EXPERIMENTAL STUDY OF MECHANICAL PROPERTIES OF COMBINED SPECIMEN WITH ROCK AND SHOTCRETE UNDER FREEZING-THAWING CYCLES. , 2010, 29(12): 2510-2521.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2010/V29/I12/2510

[1]	杨贵名，孔期，毛冬艳，等. 2008年初“低温雨雪冰冻”灾害天气的持续性原因分析[J]. 气象学报，2008，66(5)：836-849.(YANG Guiming，KONG Qi，MAO Dongyan，et al. Analysis of causes of the long-lasting cryogenic freezing rain and snow weather at the beginning of 2008[J]. Acta Meteorologica Sinica，2008，66(5)：836-849.(in Chinese))
[2]	王东海，柳崇健，刘英，等. 2008年1月中国南方低温雨雪冰冻天气特征及其天气动力学成因的初步分析[J]. 气象学报，2008，66(3)：405-422.(WANG Donghai，LIU Chongjian，LIU Ying，et al. A preliminary analysis of features of the severe cold surge，ice-snow and frozen weather over the southern China in January 2008 and its dynamic origins[J]. Acta Meteoroloeica Sinica，2008，66(3)：405-422.(in Chinese))
[3]	王遵娅，张强，陈峪，等. 2008年初我国低温雨雪冰冻灾害的气候特征[J]. 气候变化研究进展，2008，4(2)：63-67.(WANG Zunya，ZHANG Qiang，CHEN Yu，et al. Meteorological characteristics of the severe cold surge，ice-snow and frozen disasters in early 2008 over China[J]. Advances in Climate Change Research，2008，4(2)：63-67.(in Chinese)) " target="_blank">
[4]	王凌，高歌，张强，等. 2008年1月我国大范围低温雨雪冰冻灾害分析：I. 气候特征与影响评估[J]. 气象，2008，34(4)：95-100.(WANG Ling，GAO Ge，ZHANG Qiang，et al. Analysis of the severe cold surge，ice-snow and frozen disasters in south China during January 2008：I. climatic features and its impact[J]. Meteorological Monthly，2008，34(4)：95-100.(in Chinese)) " target="_blank">
[5]	高辉，陈丽娟，贾小龙，等. 2008年1月我国大范围低温雨雪冰冻灾害分析：II. 成因分析[J]. 气象，2008，34(4)：101-106.(GAO Hui，CHEN Lijuan，JIA Xiaolong，et al. Analysis of the severe cold surge，ice-snow and frozen disasters in South China during January 2008：II. possible climatic causes[J]. Meteorological Monthly，2008，34(4)：101-106.(in Chinese)) " target="_blank">
[6]	丁一汇，王遵娅，宋亚芳，等. 中国南方2008年1月罕见低温雨雪冰冻灾害发生的原因及其与气候变暖的关系[J]. 气象学报，2008，66(5)：808-825.(DING Yihui，WANG Zunya，SONG Yafang，et al. Causes of the unprecedented freezing disaster in January 2008 and its possible association with the global warming[J]. Acta Meteorologica Sinica，2008，66(5)：808-825.(in Chinese))
[7]	曾明剑，陆维松，梁信忠，等. 2008年初中国南方持续性冰冻雨雪灾害形成的温度场结构分析[J]. 气象学报，2008，66(6)：1 043-1 052.(ZENG Mingjian，LU Weisong，LIANG Xinzhong，et al. Analysis of temperature field structure for persistent disasterous freezing rain and snow over southern China in early 2008[J]. Acta Meteorologica Sinica，2008，66(6)：1 043-1 052.(in Chinese)) " target="_blank">
[8]	徐光苗，刘泉声. 岩石冻融破坏机制分析及冻融力学试验研究[J]. 岩石力学与工程学报，2005，24(17)：3 076-3 082.(XU Guangmiao，LIU Quansheng. Analysis of rock failure mechanism due to freeze- thawing cycles and mechanical testing study on frozen-thawed rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(17)：3 076-3 082.(in Chinese)) " target="_blank">
[9]	黄克智，肖纪美. 材料的损伤断裂机制和宏微观力学理论[M]. 北京：清华大学出版社，1999.(HUANG Kezhi，XIAO Jimei. Damage and fracture mechanism of materials and its macro-mechanical and micro-mechanical theories[M]. Beijing：Tsinghua University Press，1999.(in Chinese)) " target="_blank">
[10]	曹文贵，方祖烈，唐学军. 岩石损伤软化统计本构模型之研究[J]. 岩石力学与工程学报，1998，17(6)：628-633.(CAO Wengui，FANG Zulie，TANG Xuejun. Study of statistical constitutive model for soft and damage rocks[J]. Chinese Journal of Rock Mechanics and Engineering，1998，17(6)：628-633.(in Chinese))
[11]	曹文贵，赵明华，刘成学. 岩石损伤统计强度理论研究[J]. 岩土工程学报，2004，26(6)：820-823.(CAO Wengui，ZHAO Minghua，LIU Chengxue. Study of damage statistical strength theory for rock[J]. Chinese Journal of Geotechnical Engineering，2004，26(6)：820-823.(in Chinese))
[12]	曹文贵，李鹏，赵明华，等. 基于正态分布的岩石损伤统计本构模型及其参数确定方法研究[J]. 水文地质工程地质，2005，32(3)：11-14.(CAO Wengui，LI Peng，ZHAO Minghua，et al. Study of statistical damage constitutive model for rock based on normal distribution and the method for determining its parameters[J]. Hydrogeology and Engineering Geology，2005，32(3)：11-14.(in Chinese)) " target="_blank">
[13]	曹文贵，李翔. 岩石损伤软化统计本构模型及参数确定方法的新探讨[J]. 岩土力学，2008，29(11)：2 952-2 956.(CAO Wengui，LI Xiang. A new discussion on damage softening statistical constitutive model for rocks and method for determining its parameters[J]. Rock and Soil Mechanics，2008，29(11)：2 952-2 956.(in Chinese)) " target="_blank">
[14]	杨明辉，赵明华，曹文贵. 岩石损伤软化统计本构模型参数的确定方法[J]. 水利学报，2005，36(3)：345-349.(YANG Minghui，ZHAO Minghua，CAO Wengui. Method for determining the parameters of damage softening statistical constitutive model for rock[J]. Journal of Hydraulic Engineering，2005，36(3)：345-349.(in Chinese)) " target="_blank">
[15]	张毅，廖华林，李根生. 岩石连续损伤统计本构模型[J]. 石油大学学报(自然科学版)，2004，28(3)：37-40.(ZHANG Yi，LIAO Hualin，LI Gensheng. A statistical constitutive model for continuous damage of rock[J]. Journal of the University of Petroleum，China (Natural Science)，2004，28(3)：37-40.(in Chinese)) " target="_blank">