装配式钢筋混凝土梁柱节点抗冲击性能分析
Impact Resistance Analysis of Prefabricated Reinforced Concrete Beam-column Joints
龙威1
作者信息
- 1. 贵阳市建筑设计院有限公司,贵州 贵阳 550000
- 折叠
摘要
文中主要就钢筋混凝土柱以及预制装配式梁柱节点进行冲击荷载试验,并分析了钢筋混凝土柱以及预制装配式梁柱节点处裂纹演变规律、冲击力时程响应以及支座反力时程响应.结果表明,钢筋混凝土柱及预制装配式梁柱节点的冲击力时程响应曲线均呈现波动(脉冲段)-平稳(平台段)-波动-平稳的规律,现浇混凝土梁柱节点的第一个脉冲段的冲击荷载较预制装配式梁柱节点降低了33.7%;钢筋混凝土柱节点处的支座反力的第一个脉冲段峰值冲击力比预制装配式梁柱节点低了4%,第二个脉冲段峰值冲击力比预制装配式梁柱节点低了20.8%.总之,预制混凝土柱构件的抗冲击能力大于现浇混凝土柱构件的抗冲击能力,其抗冲击性更强,损伤度更小.
Abstract
This paper mainly conducts impact load tests on reinforced concrete columns and prefabricated beam-column joints,and analyzes the crack evolution law,impact force time-history response and support reaction time-history response at reinforced concrete columns and pre-fabricated beam-column joints.The results show that the impact time-history response curves of reinforced concrete column and prefabricated beam-column joint show a law of fluctuating(pulse section)-stable(platform section)-fluctuating-stable.The impact load of the first pulse section of cast-in-place concrete beam-column joint is 33.7%lower than that of prefabricated beam-column joint.The peak impact force of the first pulse section is 4%lower than that of the prefabricated beam-column joint,and the peak impact force of the second pulse sec-tion is 20.8%lower than that of the prefabricated beam-column joint.In short,the impact resistance of precast concrete column members is greater than that of cast-in-place concrete column members,and its impact resistance is stronger and the damage degree is smaller.
关键词
装配式结构/钢筋混凝土柱/冲击性能/能耗性能Key words
Prefabricated structure/Reinforced concrete column/Impact performance/Energy consumption performance引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据