基于混凝土损伤塑性模型的闸门槽抗剪稳定研究  

Study on shear stability of sluice gate slot based on concrete damage plasticity model

作　　者：王建[1] 彭泽豹 张鹏[1] 涂图 WANG Jian;PENG Zebao;ZHANG Peng;TU Tu(College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China)

机构地区：[1]河海大学水利水电学院,江苏南京210098

出　　处：《人民长江》2018年第9期67-70,90,共5页Yangtze River

摘　　要：为保证闸门槽设计的合理性,针对其设计中抗剪稳定分析所存在的不足,利用ABAQUS软件提供的混凝土损伤塑性模型,建立某闸门槽的三维数值模型,研究其在无筋和有筋情况下从加载初期到彻底破坏的全过程。结果表明:无筋闸门槽在位移载荷作用下先表现为内侧转角发生拉裂破坏,最后沿某一斜截面发生剪切破坏;加筋虽能提高该闸门槽的承载力但效果有限,且该闸门槽在无筋情况下也不存在剪切破坏的危险。有限元计算结果和理论分析计算结果对比表明,两种方法结果基本一致,一定程度上验证了数值模型计算的合理性。To ensure the rationality of sluice gate slot design, aiming at the shortcomings of the shear stability analysis of gate slot design, we established a 3D numerical model for a gate slot using the concrete plastic damage model provided by ABAQUS software. By the model, we researched the whole process from the initial loading to completely failure of the gate slot under the conditions of unreinforced and reintorced respectively. The results show that for the unreinforced gate slot under the effect of displacement loading, first tensile crack damage occurs at the inside corner, then shear damage occurs along an oblique plane; reinforcement can improve the bearing capacity of the gate slot, but its effect is limited, meanwhile the gate slot does not have a risk of whole shear damage even in unreinforced condition. The comparison between the FEM and theoretical calculation results veri- fies the rationality of this model.

关 键 词：闸门槽 塑性损伤 位移载荷 拉裂破坏 剪切破坏 承载力 

分 类 号：TV663[水利工程—水利水电工程]