摘要
为研究剪跨比对爆炸荷载作用下钢筋混凝土梁抗爆性能与破坏形态的影响,分别采用LSDYNA软件中两种不同的混凝土材料模型(*MAT 84与*MAT 159)进行数值分析并对所得数据进行了比较。数值分析发现:相同剪跨比的条件下,纵筋配筋率对钢筋混凝土抗爆性能的影响大于面积配箍率;随着剪跨比的增大,梁由剪切破坏转变为弯曲破坏与压碎破坏。
In order to study the anti-explosion performance and failure form under blast load due to shear span ratio,two different concrete material models of LS-DYNA are used to numerical analysis and the data is compared.The results show that longitudinal reinforcement ratio play an important role compared to stirrup ratio in the same shear span ratio. With the increase of shear span ratio,the failure form of RC beam changes form shear failure to bending failure and compressive failure.
作者
周清
牛宁宁
刘海员
张新鑫
ZHOU Qing NIU Ningning LIU I-Iaiyuan ZRANG Xinxin(Urban Planning and Design institute of Binzhou, Binzhou, Shandong 256600, Chin)
出处
《水利与建筑工程学报》
2017年第1期219-224,237,共7页
Journal of Water Resources and Architectural Engineering
关键词
剪跨比
爆炸荷载
RC梁
抗爆性能
破坏形态
shear span ratio
blast load
RC beam
anti-explosion performance
failure form
