摘要
土拱效应虽然在工程中得到广泛应用,但其实践经验远远领先于理论发展。该文通过分析室内模型试验中土拱的受力过程,利用已有研究推导的计算公式和摩尔库伦强度破坏准则计算室内模型中直观土拱的破坏荷载。两者的计算结果在模型的预留孔宽度小于0.3m时较为接近,当模型预留孔宽度大于0.3m时,推导的计算公式值是摩尔库伦理论计算的6倍。研究成果可为后续室内试验或工程设计的理论分析提供参考。
The soil arch effect is widely applied in engineering though, its theoretical development still fails to meet the practical demands. This paper an-alyzes the stress process of the soil arch in the laboratory model experiments and calculates the failure load of the soil arch in the experiments with thecalculation formula derived from the existing researches and the mohr-coulomb strength failure criteria. The calculation results of the two are relativelyclose when the width of the reserved hole of the model is less than 0.3m. When the reserved hole width of the model is greater than 0.3m, the calculatedformula value is 6 times that of the mohr-coulomb theory. The research results can provide references for the subsequent theoretical analysis of laboratory experiments or engineering design.
出处
《重庆建筑》
2018年第3期22-25,共4页
Chongqing Architecture
基金
江西省科技支撑计划项目"复杂应力作用下地下深埋粘土围岩高放核废料处置库建设及风险评估技术研究"(20151BBG70004)论文之一
关键词
土拱效应
室内模型
理论计算
摩尔库伦强度准则
soil arch effect
laboratory model
theoretical calculation
mohr-coulomb strength crite
