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一、前言预制与现浇迭合形成的钢筋砼超静定结构,具有整体性好,有利于抗震,便利施工,综合经济效益好等突出优点,是一种合理的结构形式,日益广泛应用在国内外工民用建筑上。迭合式梁板的受力性能,国外已研究多年,但大都在一阶段受力情况下进行的,未能反映该结构在工程中的受力特点。近年来国内对二阶段迭合简支梁进行了系统研究,除1981年同济大学对二阶段受力迭合式框架的式验研究外,尚未见国内外有研究二阶段受力超静定结构的文献。本文研究的迭合超静定结构形式是:预制钢筋砼简支梁承受第一阶段荷载(相当
I. Preface Precast and cast-in-situ reinforced concrete structures with statically indeterminate structure have the prominent advantages of good integrity, favorable for earthquake resistance, convenient construction and good comprehensive economic benefits. They are a reasonable structure form and are widely used in Civil and industrial workers at home and abroad. The mechanical behavior of laminated beam has been studied abroad for many years, but most of them were carried out under the first-stage force, which failed to reflect the force characteristics of the structure in the project. In recent years, the domestic two-stage laminated simply supported beams were systematically studied. Except for the empirical study of the two-stage forced laminated frame by Tongji University in 1981, there has not been any research on the statically indeterminate structures literature. In this paper, the study of the superposition of statically indeterminate form is: prefabricated reinforced concrete beams subjected to the first phase load (equivalent