基于试验的型钢混凝土柱抗震性能指标限值研究

发布时间：2018-02-27 14:20

  本文关键词： 型钢混凝土柱 试验数据收集 性能状态 指标限值 回归分析　出处：《土木工程学报》2017年06期 　论文类型：期刊论文

【摘要】：收集了206个国内外型钢混凝土(SRC)柱试验结果,分析研究剪跨比、弯剪比、轴压力系数、体积配箍率和配钢率5个主要参数对SRC柱破坏形态的影响,提出以剪跨比、弯剪比划分SRC柱破坏形态的方法。根据现行抗震设计规范和SRC柱的试验破坏过程确定SRC柱的5个性能状态,以构件骨架曲线为基础得到构件各性能状态的位移角限值。在不同破坏状态下,分析各性能状态位移角限值和5个主要参数的关系,得到轴压力系数是影响构件位移角限值变化的关键参数,统计得到与SRC柱5个性能状态对应的变形指标限值,并进行可靠性分析。结果表明该文所给出的破坏形态划分方法能够较好的预测不同的破坏形态;根据轴压力系数给出的SRC柱变形指标限值的保证率在合理范围之内。
[Abstract]:The experimental results of 206 SRC columns at home and abroad are collected, and the effects of five main parameters, such as shear span ratio, bending shear ratio, axial pressure coefficient, volume hoop ratio and steel distribution ratio, on the failure modes of SRC columns are analyzed and studied. According to the current seismic design code and the test failure process of the SRC column, the five performance states of the SRC column are determined. Based on the skeleton curve of the member, the displacement angle limit value of each performance state of the member is obtained. Under different failure states, the relationship between the displacement angle limit value of each performance state and five main parameters is analyzed. The axial pressure coefficient is the key parameter that affects the limit value of displacement angle of the member. The deformation index limit corresponding to the five performance states of the SRC column is obtained by statistics. The results show that the method proposed in this paper can well predict the different failure patterns, and the limit value of SRC column deformation is within a reasonable range according to the axial pressure coefficient.
【作者单位】： 华南理工大学亚热带建筑科学国家重点实验室;华南理工大学土木与交通学院;
【基金】：国家自然科学基金(51378221) 广州市科技计划项目(201504010008) 华南理工大学亚热带建筑科学国家重点实验室创新探索项目(2014ZC16)
【分类号】：TU352.11;TU398.9
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本文编号：1543029