重庆大学学报2025，Vol.48Issue(3)：94-106,13.DOI:10.11835/j.issn.1000-582X.2025.03.008
考虑黏结滑移影响的叠合梁-现浇柱子结构承载性能多参数分析
Multiple parameter analysis of bearing behavior of composite beams-cast-in-place column subassemblages considering bond slip
摘要
Abstract
A discrete interfacial bonding element(BS1)was developed using the User Element(UEL)interface in ABAQUS,ant it's capable of automatically calculating element length based on a specified bond-slip relationship.Numerical simulations of beam-cast-in-place column subassemblages were carried out using the simplified Eligehausen bond-slip constitutive model.The results were consistent with experimental data.The BS1 element demonstrated a 25%improvement in computational efficiency due to its automatic length calculating feature.A total of 30 finite element models of PC beam-column subassemblages were established for multi-parameter analysis,considering variables such as the thickness of the cast-in-place layer,the slab width of T-composite beams,and the direction of load application.Results show that subassemblages with 90° hooked bars and headed bars exhibit nearly equivalent bearing capacities,though the ductility index differs by 12%,favoring the 90° hooked bar.The slab width specified in Chinese design codes proved more reliable for bearing capacity performance than those in foreign codes.Furthermore,changes in load directions result in a 12%variation of bearing capacity and a 55%difference in deformation capacity,highlighting the need for further investigation.This study provides valuable insights and reliable references for the numerical analysis of prefabricated concrete structures considering bond-slip effects.关键词
界面单元/叠合梁-现浇柱子结构/黏结滑移/锚固形式/多参数分析Key words
interface element/composite beam-cast-in-place column subassemblages/bond slip/anchorage type of reinforcement/multi-parameter analysis分类
建筑与水利引用本文复制引用
张望喜,叶缘,周靓,杨学峰,易伟建..考虑黏结滑移影响的叠合梁-现浇柱子结构承载性能多参数分析[J].重庆大学学报,2025,48(3):94-106,13.基金项目
国家自然科学基金资助项目(52478167).Supported by National Natural Science Foundation of China(52478167). （52478167）
