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浆锚搭接预制混凝土短柱抗震性能
引用本文:王金龙,高喜安,王磊.浆锚搭接预制混凝土短柱抗震性能[J].科学技术与工程,2019,19(25):302-307.
作者姓名:王金龙  高喜安  王磊
作者单位:中铁十五局集团有限公司 ,重庆,400051;四川轻化工大学土木工程学院 ,自贡,643000
基金项目:基于BQIM的高速公路路面安全使用性能智能决策支持技术应用(aj20170601105926)
摘    要:为了研究浆锚搭接预制混凝土短柱在不同轴压比和纵筋配筋率等因素下的抗震性能,在已有试验的基础上,建立了三维数值模型,验证了数值模型的合理性。设计并建立了5组不同的试件,对比各个试件的破坏模式、滞回性能、延性性能和耗能能力等抗震指标。结果表明:各试件都为压弯破坏,裂缝的分布形态主要表现为左右两侧的水平裂缝和前后两侧的弯剪裂缝;随着轴压比的增大,预制混凝土短柱的承载力呈现增长趋势,延性性能逐渐降低;随着纵筋配筋率的提高,预制混凝土短柱的承载力和耗能能力逐渐增大。

关 键 词:预制短柱  延性  耗能能力  轴压比
收稿时间:2019/1/3 0:00:00
修稿时间:2019/5/14 0:00:00

Study on Seismic Behavior of Prefabricated Concrete Short Columns with Mortar-Anchor Lapping
Wang Jin-long and.Study on Seismic Behavior of Prefabricated Concrete Short Columns with Mortar-Anchor Lapping[J].Science Technology and Engineering,2019,19(25):302-307.
Authors:Wang Jin-long and
Institution:China Railway 15 Bureau,
Abstract:In order to study the seismic performance of precast concrete short column with grouting-anchor overlap under different axial compression ratio and longitudinal reinforcement ratio, a three-dimensional numerical model is established based on the existing tests, and the rationality of the numerical model was verified. Based on the test results, 5 groups of different specimens were designed and established, and their quasi-static analysis was carried out. The failure modes, hysteretic properties, ductility and energy dissipation capacity of the specimens were compared. The results show that all specimens are compression-bending failure, and the distribution of cracks is mainly manifested by horizontal cracks on left and right sides and flexural-shear cracks on Front and rear sides; with the increase of axial compression ratio, the bearing capacity of precast concrete short columns presents an increasing trend, but the ductility performance gradually decreases, and it is not conducive to the energy consumption of specimens; with the increase of longitudinal reinforcement ratio, the bearing capacity and energy dissipation capacity of columns increase gradually.
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