同济大学学报（自然科学版）2025，Vol.53Issue(6)：878-887,10.DOI:10.11908/j.issn.0253-374x.23378
橡胶支座铅芯热效应评估方法
Evaluation Method for Heating Effect of Lead Core in Rubber Bearings
摘要
Abstract
To solve the research difficulties regarding the temperature field and mechanical properties degradation of lead rubber bearings under heating effects of the lead core,an evaluation method for heating effect of lead core was proposed by physical tests and numerical simulations.The law of temperature field transfer under free boundary and quasi-real boundary was studied in physical tests.The temperature variation of the lead core and mechanical degradation of bearings under heating effects were predicted by the numerical simulation under real boundary conditions.The results show that the influence of the first shape factor on the heating and cooling rate was significant.The insulation effect of the covering layer was remarkable,resulting in a slow cooling rate.The boundary consisting of steel plate and concrete block has a great influence on the temperature field of the bearing,and emphasis should be placed on simulation of the boundary.The numerical simulation reproduces the physical test process,and the simulation of the bearing and the steel-concrete boundary was experimentally verified.Finally,the temperature variation of the lead core and mechanical degradation of the bearing with the real boundary was predictable.The proposed method has strong applicability,which can provide a reference for evaluating heating effects of lead core in various types of rubber bearing.关键词
橡胶支座/铅芯热效应/铅芯温度/力学性能退化Key words
rubber bearing/heating effect of lead core/temperature of lead core/mechanical degradation分类
土木建筑引用本文复制引用
薛斌,卢文胜,任祥香..橡胶支座铅芯热效应评估方法[J].同济大学学报（自然科学版）,2025,53(6):878-887,10.基金项目
国家自然科学基金(52308527) （52308527）
重庆市自然科学基金(CSTB2022NSCQ-MSX0476) （CSTB2022NSCQ-MSX0476）
