爆炸作用下高强钢绞线网片-聚合物砂浆加固钢筋混凝土板的数值模拟  

Numerical Simulation of Reinforced Concrete Slabs Retrofitted with High Strength Steel Wire Mesh and Polymer Mortar Subjected to Explosion Loading

作　　者：申双俊 廖维张[1] 张春磊[1,2] SHEN Shuang-jun1 ,LIAO Wei-zhang1 ,ZHANG Chun-lei1,2(1. Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material, Beijing University of Civil Engineering and Architecture, Beijingl000d4, China; 2. School of Civil Engineering, Tianjin University, Tianjin 300350, Chin)

机构地区：[1]北京建筑大学工程结构与新材料北京市高等学校工程研究中心,北京100044 [2]天津大学建筑工程学院,天津300350

出　　处：《爆破》2018年第1期167-174,共8页Blasting

基　　金：国家自然科学基金项目(51378046);北京市属高等学校人才强教项目(067135300100)

摘　　要：为了探究高强钢绞线-聚合物砂浆加固技术对钢筋混凝土板的抗爆性能的影响,应用有限元分析软件ANSYS/LS-DYNA对其进行了在爆炸荷载作用下的数值模拟。在验证有限元模型合理性的基础上,对比分析了爆炸荷载作用下砂浆层厚度、砂浆强度和钢绞线直径等不同加固参数对钢筋混凝土板的破坏形态与板底位移的影响。结果表明:采用高强钢绞线-聚合物砂浆加固后钢筋混凝土板的抗爆性能显著提高;在砂浆加固层厚度、砂浆强度、钢绞线直径3种加固影响参数中,砂浆加固层厚度对钢筋混凝土板的加固效果影响显著,而砂浆强度和钢绞线直径对板的加固效果不明显。如果运用该技术提高钢筋混凝土板的抗爆性能,优先考虑增大加固层厚度。In order to investigate the blast resistant performance of reinforced concrete slabs retrofitted with high strength steel wire mesh and polymer mortar, the finite element analysis software ANSYS/LS-DYNA was used to sim- ulate blast loading. By comparing and analyzing the damage characteristics and the bottom surface deflections of rein- forced concrete slabs, the effects of main factors as the thickness of mortar, the strength of mortar and the diameter of steel wire on blast resistant performance of slabs under blast load were discussed. The results show that the blast re- sistant performance of the reinforced concrete slabs retrofitted with high strength steel wire mesh and polymer mortar is improved significantly. Among the three retrofitting parameters of thickness of mortar, strength of mortar and diame- ter of steel wire, the thickness of mortar is the most remarkable parameter to increase the retrofitting effect of the rein- forced concrete slabs. The retrofitting effect of the the strength of mortar and the diameter of steel wire steel wire is not obvious. If taking this technology to improve the blast resistant performance of reinforced concrete slabs, it is the priority to increase the thickness of the reinforcement layer.

关 键 词：高强钢绞线 参数分析 有限元模拟 抗爆性能 

分 类 号：D631[政治法律—政治学]