损伤缺陷对矿山井架结构的力学影响分析  

Analysis on the Effect of Damage Defects on Stress of Mine Steel Head Frame Structure

作　　者：杨明飞[1] 朱克川 王辛 邵浩 YANG Mingfei;ZHU Kechuan;WANG Xin;SHAO Hao(School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan Anhui 232001,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：《安徽理工大学学报（自然科学版）》2019年第1期43-48,共6页Journal of Anhui University of Science and Technology:Natural Science

基　　金：安徽省高校自然基金资助项目(KJ2016A209);安徽理工大学人才引进基金资助项目(ZY04)

摘　　要：为了研究损伤缺陷对矿山井架结构的力学影响,利用ANSYS软件构建了结构的数值模型,分别考虑关键杆件局部锈蚀、局部弯曲、支座沉降和复合缺陷等工况,对其力学性能进行分析。研究表明:当锈蚀率达到35%时,结构的最大水平位移与初始结构相比增大了4.9%,但对最大应力影响较小。杆件弯曲和支座沉降对井架结构最大应力和水平位移的影响均较小。复合缺陷工况下,当弯曲量为60mm,锈蚀率为35%,支座沉降达到0.4°时,井架结构最大应力减小了4.2%,但水平位移增大了9.2%。综上所述,井架结构力学分析过程中须重点考虑复合损伤问题。In order to study the mechanical effect of damage defects on the structure of mine steel head frame structure, the numerical model of the structure is constructed by using ANSYS software. The mechanical properties of the structure are analyzed under the conditions of local corrosion, local bending, support settlement and complex defects of the key member. Studies have shown that when the corrosion rate reaches 35%, the maximum horizontal displacement of the structure is increased by 4.9% compared with the initial structure, but the effect on the maximum stress is small. The bending of the members and the settlement of the supports have little effect on the maximum stress and horizontal displacement of the damage structure. Under the condition of complex defects, when the bending amount is 60mm, the corrosion rate is 35%, and the support settlement reaches 0.4°, the maximum stress of the damage structure is reduced by 4.2%, but the maximum horizontal displacement is increased by 9.2%. In general, the complex damage should be taken into account in the mechanical analysis of Mine steel head frame structure.

关 键 词：矿山井架结构 局部锈蚀 局部弯曲 支座沉降 复合缺陷 

分 类 号：TD54[矿业工程—矿山机电]