湖南大学学报（自然科学版）2016，Vol.43Issue(11)：55-60,6.
无黏结部分预应力砼梁恢复力模型的研究∗
Research on Restoring Force Model of Unbonded Partially Prestressed Concrete Beams
摘要
Abstract
Based on the secondary development platform of OpenSEES software,this paper studied the restoring force model of unbonded partially prestressed concrete beam sections.According to the statistics of experiments and theoretical analysis,the moment-curvature hysteretic model of the section for unbonded partially prestressed concrete beams was established,and planted into Material class in the software of OpenSEES by compiling Visual C++ pro-grams,which is used for the nonlinear analysis of unbonded partially prestressed concrete structure without iterative calculation of stress increment for unbonded prestressed tendon.The crucial problem of stress analysis for unbonded partially prestressed concrete structure was then solved.Moreover,under displacement control,this paper considered the nonlinear beam-column element based on flexibility to calculate the moment-deflection hysteretic curves of unbond-ed partially prestressed concrete beams under low cyclic reversed loading on the basis of established restoring force model.The calculation results are reasonably identical to experiment results,which indicates the reliability of estab-lished restoring force model,and provides theoretical basis for the nonlinear analysis of unbonded partially prestressed concrete structures.关键词
无黏结部分预应力砼梁/低周反复荷载/OpenSEES/恢复力模型/弯矩-挠度滞回曲线Key words
unbonded partially prestressed concrete beams/low cyclic reversed loading/OpenSEES/restoring force model/moment-deflection hysteretic curves分类
建筑与水利引用本文复制引用
唐昌辉,倪佳,程明慧..无黏结部分预应力砼梁恢复力模型的研究∗[J].湖南大学学报（自然科学版）,2016,43(11):55-60,6.基金项目
国家自然科学基金资助项目(51278179),National Natural Science Foundation of China(51278179) （51278179）
