装配式预应力槽型板结构在人防荷载作用下的抗爆性能模拟分析  

SIMULATION ANALYSIS OF BLAST-RESISTANT PERFORMANCE OF PREFABRICATED PRESTRESSED CHANNEL SLAB UNDER LOAD OF CIVIL AIR DEFENSE

作　　者：潘亮 潘阳 曹家豪 薛强[3,4] 王耀斌 罗广宇 PAN Liang;PAN Yang;CAO Jiahao;XUE Qiang;WANG Yaobin;LUO Guangyu(Capital Construction Planning Office of Northwest Agriculture and Forestry University,Yangling 712100,China;Jinan Civil Air Defense Architectural Design and Research Institute Co.,Ltd.,Ji’nan 250000,China;School of Civil Engineering,Xi’an University of Architecture&Technology,Xi’an 710055,China;Institute of Architectural Design&Research,Xi’an University of Architecture&Technology,Xi’an 710055,China;Yangling Demonstration Area Agricultural Science Environmental Protection Engineering Co.,Ltd.,Yangling 712100,China)

机构地区：[1]西北农林科技大学基建规划处,陕西杨凌712100 [2]济南市人防建筑设计研究院有限责任公司,济南250000 [3]西安建筑科技大学土木工程学院,西安710055 [4]西安建筑科技大学建筑设计研究院,西安710055 [5]杨凌示范区农科环保工程有限公司,陕西杨凌712100

出　　处：《工业建筑》2020年第1期91-98,共8页Industrial Construction

基　　金：“十三五”国家重点研发计划项目(2017YFC0703806)

摘　　要：采用有限元软件模拟爆炸荷载作用下预应力槽型板结构体系的受力性能,首先将缩尺模型的模拟结果与试验结果进行对比,通过比较受力性能以及破坏模式,确保建立符合试验的模型,并在此基础上建立足尺模型,模拟和分析预应力槽型板结构在人防爆炸荷载作用下的动力性能、变形性能。研究结果表明:高应变速率的动态本构模型可以很好地模拟结构在爆炸荷载作用下的受力性能和破坏模式。装配式预应力槽型板在核6级、核5级、核4B级、核4级对应荷载作用下,混凝土受压与受拉损伤值均小于0.5。装配式预应力槽型板在爆炸荷载作用下具有良好的抗爆性能,结构的整体延性比在7.5以上。By using finite element to simulate the medhanical propersies of the prefabricated prestressed channel slab structure system under explosion load,the simulation results of scaled model were compared with the test results,through comparing the mechanical properties and failure mode,the model accoded with experiment was established,and based on the full scale model,the dynamic performance and deformation performance prefabricated prestressed channel slab structure in the civil air defense under explosion load were simulation and analyzed.The results showed that the dynamic constitutive model of high strain rate could well simulate the mechanical properties and failure mode of the structure under explosion load.Under the action of nuclear level 6,nuclear level 5,nuclear level 4B and nuclear level 4,the concrete damage under compression and tension was less than 0.5.The prefabricated prestressed channed plate hds good blast-resistant performance under explosion load,and the overall ductility ratio of the structure was more flon 7.5.

关 键 词：装配式预应力槽型板结构 人防爆炸荷载 有限元 延性 

分 类 号：TU352.13[建筑科学—结构工程]