考虑立井井壁纵向膨胀效应的温度应力分析  

Analysis of Temperature Stress of Mine Shaft Lining considering the Effect of Longitudinal Expansion

作　　者：何朋立[1] 郭力[1] 王在泉[2] 

机构地区：[1]洛阳理工学院土木工程学院,河南洛阳471023 [2]青岛理工大学理学院,山东青岛266033

出　　处：《洛阳理工学院学报（自然科学版）》2015年第3期17-20,共4页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

基　　金：河南省科技厅自然科学基金项目(142102310480)

摘　　要：为分析温度竖向附加应力对深厚表土层井壁强度的影响,在分析井壁纵向膨胀与土体相互剪切作用的基础上建立了弹塑性分析模型,得到了纵向膨胀产生的温度竖向附加应力计算公式。分析结果表明,温度竖向附加应力随深度非线性增大,在基岩与井壁交界处达到最大值;温度竖向附加应力是温度应力的一部分,与其他荷载共同作用造成井壁破裂。In order to analyze the influence of temperature vertical additional stress on concrete shaft lining strength in deep overburden, the elastic-plastic analysis model was built based on the mutual shearing action between shaft lining and soil considering shaft lining longitudinal expansion effect, and the formula of temperature vertical additional stress was induced. In the example analysis, the proportion of vertical stress components produced by different loads in the rupture shaft wall is ascertained. Further analysis results showed that the temperature vertical additional stress was nonlinear increasing with the depth, and reached the maximum value near bedrock. The temperature vertical additional stress is part of the temperature stress. The temperature stress and other load combination caused the shaft lining rupture.

关 键 词：纵向膨胀 相互剪切作用 弹塑性模型 温度竖向附加应力 

分 类 号：TU272[建筑科学—建筑设计及理论]