基于OpenSEES的无粘结预应力混凝土梁抗弯性能分析  

Analysis of Flexural Performance of Unbonded Prestressed Concrete Beam Based on OpenSEES

作　　者：吴山 陈建伟 霍永刚 车文鹏 

机构地区：[1]华北理工大学建筑工程学院,河北唐山063210 [2]唐山市绿色建筑产业技术研究院,河北唐山063009 [3]华北理工大学轻工学院,河北唐山063020

出　　处：《华北理工大学学报（自然科学版）》2018年第1期35-43,共9页Journal of North China University of Science and Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(51678236)

摘　　要：基于国内无粘结预应力混凝土梁性能试验研究,采用有限元平台OpenSEES,对试验中的6个试件进行数值模拟,模拟结果与试验结果吻合较好。提出了无粘结预应力梁的建模方法,对预应力筋配筋率等因素对梁抗弯性能的影响进行了分析。研究结果表明,提出的OpenSEES建模方法具有合理性,配筋率对梁抗弯性能影响显著,配筋率提高,梁抗弯承载力随之增大。Based on the experimental study of unbonded prestressed concrete beams in China,the 6 specimens were simulated by using finite element platform OpenSEES.The simulation results are identical with that of experiment.The modeling method of unbonded prestressed beams was proposed,and the influence factors such as prestressed reinforcement ratio on the flexural performance were analyzed.The results show that OpenSEES can simulate the performance of unbonded prestressed concrete beams well.The reinforcement ratio has significant influence on the flexural performance.The flexural bearing capacity increases with the increase of reinforcement ratio.

关 键 词：预应力梁 抗弯性能 OPENSEES 数值模拟 

分 类 号：TU378.2[建筑科学—结构工程]