钢-竹组合框架结构抗震性能试验研究

发布时间：2018-05-24 21:08

本文选题：钢-竹组合框架 + 拟静力试验　；参考：《建筑结构学报》2015年S1期

【摘要】：为研究钢-竹组合框架结构抗震性能,以节点处是否设置加劲肋为主要参数,设计并制作了2榀两层单跨钢-竹组合框架以及2个钢-竹组合框架节点模型,通过拟静力试验对比分析了钢-竹组合框架结构的破坏形态、滞回特性、延性、节点域剪切变形性能等。结果表明:钢-竹组合框架结构的破坏是由于框架节点域受到较大剪切变形,使得框架柱的竹胶板和槽钢产生脱胶,导致框架柱失去承载力而发生破坏;设置加劲肋的框架相较于未设置加劲肋的框架具有更高的节点域刚度、承载力、耗能能力;基于试验研究,进行了非线性有限元分析,分析得到的框架滞回曲线形状饱满,但与试验的框架滞回曲线吻合较差,二者刚度退化曲线退化趋势一致。
[Abstract]:In order to study the seismic behavior of steel-bamboo composite frame structure, two two-story single-span steel-bamboo composite frames and two steel-bamboo composite frame joint models are designed and manufactured, taking whether or not stiffened ribs are set at the joints as the main parameters. The failure form hysteretic property ductility and shear deformation of steel-bamboo composite frame structure were analyzed by quasi-static test. The results show that the failure of steel-bamboo composite frame structure is due to the large shear deformation in the joint region of the frame, which leads to the degumming of the bamboo plywood and channel steel, which leads to the loss of the bearing capacity of the frame column and the failure of the frame column. Compared with the frame with stiffened rib, the frame with stiffened rib has higher stiffness, bearing capacity and energy dissipation capacity than the frame without stiffened rib. Based on the experimental study, nonlinear finite element analysis is carried out, and the shape of hysteretic curve is full. But the hysteretic curve of the frame is not consistent with the experimental hysteretic curve, and the degradation trend of the stiffness degradation curve is consistent.
【作者单位】：宁波大学建筑工程与环境学院;
【基金】：国家自然科学基金项目(51378265) 宁波市科技计划项目(2012C5005)
【分类号】：TU398.6

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