secondary vertical system 中文意思是什麼
secondary vertical system
解釋
次生直立枝法-
By way of these tendons, precest beams and columns can be assembled conveniently, and the joints and frame are monolithic and continuous. consequently, compared with common reinforced concrete frams, this kind of frame systems possess higher reliability and solved the problems in the process of assembling prestressed concrete frames. also it forms the framework of subassemblage and prestressed concrete frames, and explores a new way for industrial production of prestressed structures. by analyzing this system, a series of conclusion are provided, incluing modulation of bending moment produced by vertical loads within beam end, secondary internal forces produced by pretress force, shear resistance of the end of beams, the influence of lateral restrains. theresearch results of this paper are proved to be practical. some advices are also brought forward on the design process
后張預應力筋既可作為施工階段拼裝手段，又可在使用階段承受梁端彎矩，構成整體受力節點和連續受力框架，克服了裝配式節點受力可靠性差的缺陷，解決了預應力混凝土框架難以裝配的問題，形成預制預應力混凝土裝配整體式框架，開辟了預應力結構工業化生產的新途徑。本文針對預壓裝配式預應力混凝土框架，從豎向荷載作用下的梁端彎矩調幅、施加預應力在框架中產生的次內力、梁端抗剪承載力、考慮側限的無側移框架的承載力分析四個方面對該種裝配式結構體系的性能做了詳細的研究。
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