钢纤维高强混凝土四桩承台受弯承载力塑性极限分析  

Plastic analysis for flexural capacity of steel fiber-reinforced high-strength concrete four-pile caps

作　　者：高丹盈[1] 雷杰[1] 樊华[1] 

机构地区：[1]郑州大学水利与环境学院,郑州450001

出　　处：《水力发电学报》2015年第8期27-34,共8页Journal of Hydroelectric Engineering

基　　金：教育部高等学校博士点基金项目(20060459005)

摘　　要：在钢纤维高强混凝土承台受弯试验的基础上,分析了钢纤维高强混凝土承台的破坏模式和破坏机构。结合钢筋混凝土承台和钢纤维高强混凝土承台的试验结果,选取三种破坏机构,按照屈服线理论推导了考虑钢纤维含量特征值影响的钢筋钢纤维高强混凝土四桩承台受弯承载力的塑性解。通过四桩承台受弯承载力塑性解与试验结果的对比分析,建议了钢筋钢纤维高强混凝土四桩承台的受弯破坏机构和受弯承载力的理论计算公式,为钢纤维高强混凝土承台的设计与应用提供了依据。This paper presents an analysis on the failure mode and failure mechanism of steel fiber-reinforced high-strength concrete （SFHSC） four-pile caps based on flexural experiments. By the test results, we have selected three failure mechanisms for detailed analysis and derived formulas for plastic calculation of flexural capacity of this structure under the three mechanisms using yield line theory, with the effect of the characteristic values of steel fiber contents included in the formulas. Comparison shows a good agreement of the flexural capacity of the structure calculated by the formulas with measurements. The results would lay a basis for the design and application of SFHSC pile caps.

关 键 词：承台 钢纤维 高强混凝土 受弯承载力 塑性分析 

分 类 号：TV431.1[水利工程—水工结构工程]