摘要
多高层预应力混凝土框架中框架柱侧向刚度较大时,侧向约束较为明显,张拉梁中预应力筋时,框架柱必将以预剪力的形式"吃掉"部分预加力,可引入侧限影响系数表达框架柱对预应力向框架梁中传递及设计计算的结果.以量大面广的"逐层浇筑,逐层张拉"的多高层预应力混凝土框架为研究对象,提出了多高层预应力混凝土框架侧限影响系数的计算方法,给出了与多高层预应力混凝土框架预应力筋相对应的侧限影响系数的取用方法及进行框架梁设计验算时应注意的相关问题.
In multistory ＆ high - rise prestressed concrete frame, the bigger flexural stiffness of columns makes lateral restraint stronger. When prestressing tendons in frame are tensioned, parts of prestressing force are transferred frame columns as prestressing shearing force. The lateral restraint modulus is used to consider the infuence that frame columns on the design results and prestressing transfer of the beams. For prestressed concrete frame applied in practice with scheme of pulling immediately tendons after construction of one storey, calculation method of lateral restraint modulus with effects of construction was presented. Choosing way of lateral restraint modulus of different tendons in multistory ＆ high - rise prestressed concrete frame was proposed. Relative problems on design of frame were discussed.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2007年第10期1538-1540,1568,共4页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(50178026)
关键词
预应力混凝土
多高层框架
侧限影响
分析
prestressed concrete
multistory ＆ high -rise frame
lateral restraint effects
analysis
