FINITE ELEMENT ANALYSIS ON FLEXURAL PROPERTIES OF PREFABRICATED NC PANELS WITH CASTING UHPC JOINT
Prefabricated concrete structure has become one of the most widely used structural forms in our country, however, there are lots of diseases at the normal concrete (NC) wet joints.The basic reason is that the joint material has bad mechanical properties and poor bond strength between cast-in-place concrete and the original concrete.Ultra-high performance concrete (UHPC) has excellent mechanical properties and good bond strength with the original normal concrete.At present, there is little research on flexural properties of prefabricated concrete structures with different UHPC joints.In this paper, five groups of common joint structures were designed, and ABAQUS was used to analyse the mechanical characteristics of the finite element models with different joint types.The results indicated that the finite element analysis accorded well with the experimental results.The flexural and tensile properties of the joint panels with different joints structures were better than the monolithic NC panels, and the mechanical properties of the model were not affected by the UHPC joints.The joint types of drilling hole and dense reinforcement could greatly improve the flexural and tensile properties of the joint panels, wedge joint and diamond joint took the second place, and rectangular joint had the worst effect.
Prefabricated concrete structure Normal concrete wet joint Ultra-high performance concrete Ultra-high performance concrete joint Finite element analysis
Yang Zhang Chong-yang Zhang Bei Chen
College of Civil Engineering, Hunan University, Chang Sha, China
国际会议
福州
英文
765-776
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）