预应力型钢混凝土连续梁弯矩调幅研究  

Research on Moment Redistribution of Prestressed Steel Reinforced Concrete Continuous Beams

作　　者：金云飞 刘郁 叶飞 章晓咏 靳天伟 JIN Yunfei;LIU Yu;YE Fei;ZHANG Xiaoyong;JIN Tianwei(Beijing Urban Construction Design Development Group Co.,Ltd.,Beijing 100037,China;Chongqing University,Chongqing 400045,China)

机构地区：[1]北京城建设计发展集团股份有限公司,北京100037 [2]重庆大学,重庆400045

出　　处：《工业建筑》2024年第10期77-83,共7页Industrial Construction

摘　　要：预应力型钢混凝土(简称PSRC)是预应力混凝土技术和型钢组合结构技术的优势结合,可为实现更大跨度、更大空间的建筑创造条件。PSRC连续梁的塑性内力重分布和弯矩调幅具有不同特点,现有研究极少见于报道,国家相关规范也无规定,因此有必要对PSRC连续梁的弯矩调幅理论进行研究。通过对2根4 m+4 m的两跨PSRC连续梁塑性内力重分布和弯矩调幅试验以及一系列PSRC连续梁算例的非线性模拟计算分析,研究支座截面相对受压区高度、支座与跨中强度比、含钢率及次弯矩对PSRC连续梁塑性内力重分布和弯矩调幅的影响规律。Prestressed steel reinforced concrete(PSRC)is the combination of modern prestressed concrete technology and steel composite structure technology,which can create conditions for the realization of larger span and larger space of building structures.The redistribution of plastic internal force and moment of PSRC continuous beams have different characteristics.The existing research is rarely reported,and there is no regulation in the relevant national codes.Therefore,it is necessary to study the theory of moment redistribution of PSRC continuous beams.In the study,the influence of the relative compression area height of the bearing section,the strength ratio of bearing to midspan,the steel ratio and the secondary moment on the redistribution of plastic internal force and the moment of the two-span PSRC continuous beams were studied by the redistribution of plastic internal force and the moment redistribution of the two-span PSRC continuous beams.

关 键 词：预应力型钢混凝土 弯矩调幅 内力重分布 有限元分析 

分 类 号：TU398.9[建筑科学—结构工程]