钢结构厂房承载力与评估方法  

BEARING CAPACITY EVALUATION METHODS OF STEEL STRUCTURE BUILDINGS

作　　者：胡靖 王光盈 HU Jing;WANG Guangying(Shandong Zhengyuan Digital City Construction Co.,Ltd.,Shandong Yantai 264670,China;GEOVIS Wisdom Technology Co.,Ltd.,Shandong Qingdao 266100,China)

机构地区：[1]山东正元数字城市建设有限公司,山东烟台264670 [2]中科星图智慧科技有限公司,山东青岛266100

出　　处：《低温建筑技术》2024年第4期149-152,共4页Low Temperature Architecture Technology

摘　　要：为准确评估钢结构安全性,文中通过计算整体结构的地基承载力,用ABAQUS模拟了H型钢梁和H型钢柱的抗弯承载力,根据有限元结果计算了整体结构的最大应力比。计算结果表明,地基承载力与结构截面的面积呈正相关,基础承载力大的结构安全稳定性更高;H型钢梁的抗弯承载力随焊缝强度的增大呈先减小后增大的趋势,临界焊缝强度约为350 MPa。H型钢屋架最大应力比为1.00,最小应力比为0.03,且钢梁内部最大应力约为极限应力的58.2%。最后建立的评估方法为钢结构的承载力计算提供了可靠依据,为钢结构厂房的承载力模拟提供准确模型。To properly assess the safety of the steel structure,the entire structure's foundation bearing capacity is calculated,and the bending bearing capacity of H-shaped steel beams and columns is simulated using ABAQUS.The maximum stress ratio of the entire structure is then determined based on these finite element results,indicating a positive correlation between the area of the structure section and its bearing capacity.A larger bearing capacity ensures greater security and stability.The bending capacity of H-shaped steel beams initially decreases and then increases with increasing weld strength,and the critical weld strength is around 350MPa.The maximum stress ratio of the H-shaped steel roof truss is 1.00,the minimum stress ratio is 0.03,the maximum internal stress of the steel beam is approximately 58.2% of the ultimate stress.Finally,the method provides a dependable basis for calculating steel structure's bearing capacity.

关 键 词：结构可靠度 抗弯承载力 有限元模型 焊缝强度 

分 类 号：TU375[建筑科学—结构工程]