预压装配式预应力混凝土框架梁端弯矩调幅系数的研究

预压装配式预应力混凝土框架结构作为一种新型的预应力装配式结构,开辟了预应力结构工业化生产的新途径。为了更好地应用于实际,研究预压装配式预应力混凝土框架结构的延性及其梁端的弯矩调幅能力将具有重要的理论意义和工程实用价值。基于一榀单层双跨框架结构,从塑性铰转动能力和裂缝宽度两个方面分析弯矩调幅系数的取值,与试验结果相比较,吻合较好。

RESEARCH ON MOMENT AMPLITUDE-MODULATION COEFFICIENT OF BEAM ENDS OF PRESTRESSED FABRICATED PC FRAME

prestressed fabricated PC frame structure as a new type of precast concrete structure,opened up new ways of industrial production of prestressed structures. In order to use this structure better in actual projects,the research on the ductility of the preloaded prestressed concrete frame structure and its beam ends moment amplitude-modulation capacity would have important theoretical significance and practical value. Based on a single-layer double span-frame structure,it was researched and analysed the moment amplitude-modulating coefficient values from the plastic hinge rotation capacity and crack width,whose results were in good agreement with the experimental results.