不同内径和厚度的立井受力研究  

Study on the Force of Vertical Shaft with different Inner diameter and thickness

作　　者：张文辰 ZHANG Wen-chen(College of civil architecture,Anhui University Of Science&Technology,Huainan 232001 Anhui China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《贵阳学院学报（自然科学版）》2020年第1期110-116,共7页Journal of Guiyang University：Natural Sciences

摘　　要：本文围绕深度为200m,内径宽度为15m和20m的立井壁厚进行受力分析,通过比较壁厚为1.0m-3.0m的井筒受力情况,结合当下对于井壁破裂问题的研究观点进行研究。研究结果表明,地下停车场立井在安全系数为2.0,采用强度为C70的混凝土,并考虑竖向滑动摩擦力时,内径分别为15m和20m的井壁厚度设计标准不得低于2.6m和2.7m。采用C70混凝土强度的地下停车场立井,在安全系数为3.0,并考虑竖向滑动摩擦力时,无论井壁厚度设计为多少,井壁的最大应力均超过底端内壁最高应力承载。this paper carries on the force analysis around the vertical shaft wall thickness of 200m depth,15m inner diameter width and 20m inner diameter width,by comparing the stress situation of the shaft with 1.0m-3.0m wall thickness,combined with the current research point of view on the problem of sidewall fracture.The research results show that when the safety factor of underground parking shaft is 2.0,the strength of concrete is C70,and the vertical sliding friction force is considered,the design standard of shaft wall thickness with inner diameters of 15m and 20m should not be less than 2.6m and 2.7m,respectively.For the underground parking shaft with C70 concrete strength,when the safety factor is 3.0 and the vertical sliding friction force is considered,the maximum stress of the shaft wall exceeds the maximum stress bearing capacity of the bottom inner wall no matter how much the sidewall thickness is designed.

关 键 词：井壁厚度 温度应力 滑动摩擦力 

分 类 号：TD265[矿业工程—矿井建设]