锈蚀槽钢梁荷载-挠度关系研究  

STUDY ON LOAD-DEFLECTION RELATIONSHIP OF CORRODED CHANNEL STEEL BEAMS

作　　者：于峰[1] 黎德光[1] 徐国士[1] 程安春[1] 

机构地区：[1]安徽工业大学建筑工程学院,安徽马鞍山243002

出　　处：《钢结构》2013年第2期78-81,共4页Steel Construction

基　　金：国家自然科学基金项目(51008001);安徽省教育厅自然科学基金重点项目(KJ2010A046);安徽省自然科学基金项目(1208085QE88);马鞍山市科学技术项目(马科2012(6));安徽工业大学研究生创新基金项目(2011017)

摘　　要：对锈蚀槽钢梁荷载-挠度关系曲线进行研究。试验研究表明:试件剪跨比和高跨比对锈蚀槽钢梁的荷载-挠度关系曲线有较大影响。锈蚀槽钢梁的荷载-挠度关系曲线可以分为2个阶段:第一阶段为弹性段,其斜率与剪跨比有关;第二阶段为屈服强化段,其斜率与第一阶段基本呈线性关系。在试验研究基础上,提出锈蚀槽钢梁承载力和挠度的计算方法,建立槽钢梁荷载-挠度关系曲线计算模型。该模型形式简单,便于工程实际应用。The load-deflection relationship curves of corroded channel steel beams were studied. Test results show that the shear-span ratio and height-span ratio have great influence on the load-deflection relationship curves. The load-deflection relationship curves may be divided into two sections： the first section is the elastic stage, the slope is related to the shear-span ratio; the second section is the yielding and strengthening stage, the slope between the first stage and the second stage has a linear relationship. Based on the experimental study, calculating methods of bearing capacity and deflection of corroded channel steel beams were proposed, then the load-deflection relationship model was established. The proposed model is not only simple, but also convenient to be used in actual projects.

关 键 词：槽钢 锈蚀 承载力 荷载-挠度关系曲线 计算方法 

分 类 号：TU391[建筑科学—结构工程] TU312