摘要
CFRP条带已广泛应用于结构构件的外贴抗爆加固.为了进一步提高砌体填充墙在泄爆荷载作用下的抗爆性能,同时控制加固材料成本,基于Hyperworks中的Opti Struct平台对典型砌体填充墙的CFRP外贴抗爆加固方案进行了拓扑优化,提出了一套优化加固方案.基于优化方案,建立了CFRP外贴加固砌体填充墙的精细化数值分析模型,模型的可靠性得到了试验结果的验证.基于数值模型,进一步讨论了燃气爆炸泄爆荷载作用下不同加固方式对单向和双向填充墙体动力响应和破坏模式的影响.结果表明,相较于传统方案,CFRP优化加固方案能显著提高砌体填充墙的抗爆能力;优化加固的单向墙呈窄X型破坏形式,优化加固的双向墙发生了边界剪切破坏.
CFRP laminates are extensively used to externally reinforce the structural components to resist blast loads.To further increase the blast resistance of frame infill masonry wall subjected to vented gas explosion,and to reduce the retrofitting cost,a topology optimization design of retrofitting scheme on typical masonry infilled wall was conducted in the manuscript,and an optimization scheme was finally proposed.Based on the optimization scheme,a fine numerical model of CFRP externally reinforced masonry wall was developed,and its reliability was validated by the test data.The influences of different reinforcement schemes on the dynamic responses and failure modes of masonry walls were discussed on the base of the developed numerical model.Compared to traditional scheme,it is indicated that the proposed optimization scheme is able to significantly increase the blast resistance of the reinforced masonry wall.A typical narrow X type failure mode was observed on the optimally reinforced one-way wall.As for the optimally reinforced two-way wall,shear failure always occurred at the four fixed boundaries.
作者
陈力
郑康
祝融
方秦
Chen Li;Zheng Kang;Zhu Rong;Fang Qin(State Key Laboratory of Disaster Prevention&Mitigation of Explosion&Impact,Army Engineering University,Nanjing 210007,China)
出处
《天津大学学报（自然科学与工程技术版）》
EI
CSCD
北大核心
2018年第5期547-553,共7页
Journal of Tianjin University：Science and Technology
基金
国家重点基础研究发展计划(973计划)资助项目(2015CB058003)
国家自然科学基金优秀青年基金资助项目(51622812)~~
关键词
CFRP
燃气泄爆爆炸
砌体填充墙
拓扑优化
动力响应
CFRP
vented gas explosion
masonry infilled wall
topology optimization
dynamic response
作者简介
通讯作者:陈力(1982-),男,博士,副教授.chenli1360@qq.com;;通讯作者:郑康,zhengkang1991@qq.com.
