下伏空洞顶板承载力的计算方法综述  

Summary about researches on the calculation method for the bearing capacity of cave roof

作　　者：尹君凡 雷勇[1] 陈秋南[1] Yin Junfan;Lei Yong;Chen Qiunan(Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring, Hunan University of Science and Technology, Xiangtan 411201, China)

机构地区：[1]湖南科技大学岩土工程稳定控制与健康监测湖南省重点实验室,湖南湘潭411201

出　　处：《湖南文理学院学报（自然科学版）》2017年第2期68-72,共5页Journal of Hunan University of Arts and Science(Science and Technology)

基　　金：国家自然科学基金(51208195);岩土工程稳定控制与健康监测湖南省重点实验室开放基金(E21618)

摘　　要：顶板承载力问题主要存在于矿山开采、采空区以及岩溶区工程建设中。将应用于下伏空洞顶板承载力计算的理论方法归纳为弹性理论和极限分析方法2种,其中极限分析方法包括极限平衡法和极限分析上限法。对于具体问题的求解,利用弹性理论时,关键是选取合理的力学模型;利用极限分析方法时,关键是给出恰当破坏模式的假定。目前对于偏心荷载作用下的顶板破坏机理研究较少,尚没有成熟的理论计算方法,该方面的研究有待加强。The problem of bearing capacity of roof mainly exists in the mining,old mine goaf and construction inkarst area.Two theory methods,elastic theory and limit analysis method,are applied to evaluate the bearing capacityof cave roof.Thereinto,limit analysis methods include limit equilibrium method and the upper bound method oflimit analysis.To solve a certain problem,it is crucial to choose the mechanical model properly when elastic theoryis used.At present,few researches and mature theoretical calculation methods on failure mechanism of cave roofunder off-centre load are reported,and research of this respect needs to be strengthened.

关 键 词：空洞顶板 承载力 弹性理论 极限分析方法 破坏判据 

分 类 号：TU473[建筑科学—结构工程]