摘要
型钢混凝土构件受拉容易产生裂缝,进而导致内部钢材锈蚀,降低构件承载力。本文采用试验研究与理论分析相结合的方法,将构件从加载到破坏的裂缝发展情况描绘出来,以研究裂缝的发展机理;将构件的最大裂缝宽度试验值进行对比分析,以研究其影响因素;对现有最大裂缝宽度公式提出新的假设并进行修改,使其适用抗拉柱的计算,将计算值与试验值进行对比,以验证最大裂缝宽度的适用性。研究结果表明:受力阶段的变化影响裂缝的发展,最大裂缝宽度与偏心距同向变化,本文列出的最大裂缝宽度计算公式具有较好的适用性。
Steel-reinforced concrete members are easy to produce cracks in tension,which will lead to internal steel corrosion and reduce the bearing capacity of members.Therefore,the method of combining experimental research and theoretical analysis is adopted.The crack development from loading to failure is described to study the crack development mechanism.The maximum crack width test values of components are compared and analyzed to study its influencing factors.A new hypothesis is put forward for the existing formula of maximum crack width,and the formula is modified to make it suitable for the calculation of tensile column.The value of calculation is compared with the test value to verify the applicability of maximum crack width.The results show that the change of force stage affects the development of cracks,the maximum crack width and eccentric distance change in the same direction,and the maximum crack width calculation formula listed in this paper has better applicability.
作者
张友顺
王立明
张友敬
ZHANG Youshun;WANG Liming;ZHANG Youjing(Jinan Road,Bridge and Tunnel Service Center,Jinan 250000,Shandong,China;The Second Construction Limited Company of China Construction Eighth Engineering Division,Jinan 250000,Shandong,China)
出处
《工程建设》
2021年第10期61-65,共5页
Engineering Construction
关键词
型钢混凝柱
受拉
试验
裂缝
计算
steel-reinforced concrete column
tension
experiment
crack
calculation
