木-混组合梁R-ECC连接板受弯性能有限元分析  

Finite element analysis of bendingperormance of R-ECC link slab in wood-concrete composite beam

作　　者：李志波 占雪芳[1] 陈黎 Li Zhibo;Zhan Xuefang;Chen Li(School of Civil Engineering,Central South University of Forestry and Technology,Changsha Hunan 410004,China)

机构地区：[1]中南林业科技大学土木工程学院,湖南长沙410004

出　　处：《山西建筑》2024年第8期1-4,24,共5页Shanxi Architecture

基　　金：国家自然科学基金青年基金(52278235);湖南省交通运输厅科技进步与创新项目(202309);湖南省教育厅优秀青年项目(21B0270);湖南省教育厅优秀青年项目(23B0243)。

摘　　要：为研究高延性橡胶粉水泥基复合材料(R-ECC)在木-混组合连续梁负弯矩区中的适用性,对木-混组合梁R-ECC连接板和混凝土(RC)连接板的受弯性能进行了有限元对比分析,设计了10组不同参数的R-ECC连接板,探究了连接板厚度、无粘结层区长度、配筋率及配筋方式等主要影响参数对木-混凝土组合连续梁负弯矩区R-ECC连接板受弯性能的影响,并与已有的试验结果进行对比分析。研究结果表明:同设计参数的R-ECC连接板的抗弯承载力有限元结果与试验结果较吻合,且优于RC连接板;连接板厚度和配筋率对木-混组合梁抗弯承载力影响较大,而无粘结区长度和配筋方式对其影响不大。In order to study the applicability of high ductility rubberized cementitious composite material(R-ECC)in the negative bending moment zone of wood concrete composite continuous beams,this paper conducted a finite element comparative analysis of the bending performance of R-ECC link slab and Reinforced Concrete(RC)link slab in wood concrete composite beams.Ten sets of R-ECC link slabs with different parameters were designed,and the influence of main influencing parameters such as the thickness of the link slab,the length of the unbonded zone,and the reinforcement ratio and reinforcement method on the bending performance of R-ECC link slabs in the negative moment zone of wood concrete composite continuous beams,and comparative analysis with existing experimental results.The research results indicate that the finite element results of the bending bearing capacity of R-ECC link slabs with the same design parameters are in good agreement with the experimental results,and are superior to RC link slabs.The thickness of the link slab and the reinforcement ratio have a significant impact on the flexural bearing capacity of the wood concrete composite beam,while the length of the unbonded zone and the reinforcement method have little effect on it.

关 键 词：桥梁工程 R-ECC连接板 受弯性能 有限元分析 

分 类 号：TU533[建筑科学—建筑技术科学]