基于活动门试验的三维土拱效应和张拉膜效应研究现状
Current Status of Research on Three Dimensional Soil Arch Effect and Tensioning Membrane Effect Based on Activity Gate Test
芮瑞 1穆子睿 1丁锐恒 1王之涵 1汪志豪 1崔程煜1
作者信息
- 1. 武汉理工大学土木工程与建筑学院,武汉 430070
- 折叠
摘要
工程上常利用水平加筋法来防治因施工导致地下溶洞上覆压力以及地下水位变化造成的上部覆盖土层产生局部的沉陷甚至道路的坍塌.通过总结国内外已有文献的研究成果,重点阐述了活动门试验的荷载传递机制,包括在多种理论研究模型下土拱效应和张拉膜效应本身的荷载传递机制;总结了活动门试验的土拱变形模式与演化规律以及活动门试验的试验手段,并讨论了试验的不足.结果表明,目前的研究主要集中在二维试验,对于三维条件下的活动门试验研究相对较少.同时,现有试验对于土拱效应和张拉膜效应的计算模型还比较简化.此外,现有研究对于土拱效应和张拉膜效应的耦合作用研究不够系统,需要深入探讨二者在荷载传递中的相互影响.因此,有必要开展更多的三维活动门试验,深入研究土拱效应和张拉膜效应的耦合机制,并改进和完善计算模型,以提高其准确性和可靠性.
Abstract
In engineering field,the horizontal reinforcement method is commonly used to prevent local subsidence and even road collapse caused by the overburden pressure and groundwater level changes resulting from construction-induced underground cavities.By summarizing the research findings from existing literature at home and abroad,this study focused on elucidating the load transfer mechanism of the active door test,including the load transfer mechanism of the soil arch effect and the tension membrane effect itself under various theoretical research models.It also summarized the soil arch deformation patterns and evolutionary laws of the active door test,as well as the experimental methods,and discussed the shortcomings of the test.The results indicate that most of the research is focused on two-dimensional experiments cur-rently,with limited studies conducted on active door experiments under three-dimensional conditions.Additionally,the ex-isting calculation models for soil arch effect and tension membrane effect are relatively simplistic.Furthermore,the cou-pling interaction between the soil arch effect and tension membrane effect has not been thoroughly studied,and there is a need to explore their mutual influence in load transfer more comprehensively.Therefore,it is imperative to conduct more three-dimensional active door experiments to delve into the coupling mechanism of the soil arch effect and tension mem-brane effect,and to enhance and refine the calculation models to enhance their accuracy and reliability.
关键词
活动门试验/荷载传递规律/土拱效应/张拉膜效应Key words
trapdoor test/load transfer law/soil arching effect/tension membrane effect引用本文复制引用
出版年
2024
NETL
NSTL
万方数据