摘要
为深入研究爆炸荷载作用下装配式钢筋混凝土(PC)叠合板的动力性能,本文采用LS-DYNA软件建立装配式钢筋混凝土叠合板数值模型,对不同工况下叠合板破坏形态、动力响应展开了显式动力分析,并考虑浇筑方式、混凝土抗压强度、叠合面处理形式等因素对抗爆性能的影响.结果表明:建立的数值模型能够较好地模拟开展叠合板抗爆性能研究,叠合板的破坏形态与炸药量和比例距离密切相关;增加现浇层和预制层混凝土的强度等级、增大叠合面的摩擦系数均能改善装配式钢筋混凝土叠合板的抗爆性能.
The dynamic performance of the prefabricated reinforced concrete(PC)superimposed slabs under close-in range explosion was investigated,and a numerical model of the prefabricated reinforced concrete superimposed slab was established by LS-DYNA software.The failure modes and dynamic response of the superimposed slab under close-in range explosion were analyzed by explicit dynamic analysis.The pouring method,concrete compressive strength,and the treatment of superimposed surface were considered.The results show that the numerical model can better simulate the anti-explosion performance of superimposed slabs.The failure mode of the superimposed slab was related to the chargeweight and scaled distance.The blast performance of the fabricated reinforced concrete superimposed slab can be improved by increasing the concrete compressive strength of the cast-in-place layer or the precast layer concrete,increasing the friction coefficient of the superimposed surface.
作者
段文峰
董刚
刘文渊
DUAN Wen-feng;DONG Gang;LIU Wen-yuan(School of civil engineering,Jilin Jianzhu university,Changchun 130118,China;School of civil engineering,Suzhou university of science and technology,Suzhou 215011,Jiangsu province,China)
出处
《吉林建筑大学学报》
CAS
2023年第5期1-10,共10页
Journal of Jilin Jianzhu University
基金
国家自然科学基金项目(51978166)。
关键词
钢筋混凝土叠合板
爆炸荷载
数值模拟
动力响应
抗爆性能
reinforced concrete superimposed slab
explosion load
numerical simulation
dynamic response
blast performance
