项目名称： 预制装配型钢混凝土梁受力行为与设计方法研究

项目编号： No.51478287

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑科学

项目作者： 邵永健

作者单位： 苏州科技大学

项目金额： 80万元

中文摘要： 针对型钢混凝土梁施工复杂、工序较多的缺陷，开展预制装配型钢混凝土梁（以下简称PSRC梁）设计理论与方法研究。首先采用数值模拟方法，对PSRC梁截面形式进行优化设计和选型分析。研发预制与现浇部分界面连接方式，研制界面纵向直接剪切试验装置，开展PSRC梁中预制部分与现浇部分的直接剪切试验和推出试验，研究界面纵向受剪机理与性能，建立界面纵向受剪设计方法。开展PSRC梁受弯、受剪性能试验研究，提出合理受弯和受剪分析模型，建立梁正截面受弯和斜截面受剪承载力计算方法。结合施工-使用全过程模拟试验和数值分析，研究PSRC梁在施工阶段和使用阶段的截面应力、裂缝和变形发展规律，提出PSRC梁施工阶段验算方法和使用阶段开裂荷载、裂缝宽度和跨中挠度计算方法。开展PSRC梁低周反复加载试验，研究PSRC梁在正、负弯矩反复作用下破坏形态、承载能力和变形性能，提出梁截面弹塑性恢复力模型，建立梁实用抗震设计方法。

中文关键词： 型钢混凝土梁；预制装配结构；受力行为；设计方法；试验研究

英文摘要： Because of complex and too many construction procedures of steel reinforced concrete beams in engineering practice, the program intends to invent and study a kinds of prefabricated SRC beams (which is abbreviated as PSRC beams). Firstly, based on series of numerical simulation analysis, the optimized design and innovative design of the PSRC beams' seciton will be done to find the best cross sections and the rational detail.Secondly, invent a series of shear connectors to ensure the interface performance between the precast parts and the cast in -site parts in the PSRC beams, and develop a set of direct-shear test setup. And push-out tests and direct-shear tests will be conducted to study the shear force transfer mechanism on interfaces of the PSRC beams, and design methods and ways for avoiding longitudinal shear failure on the interface will be presented. Thirdly, by series of experiments on bending and shearing behaviors of various kinds of PSRC beams, the bending performance under bending moment and shearing performance will be fully studied, and the corresponding design methods will also founded.And furthermore, by series of constructing-employing all-stage tests and numerical simulation analysis on the mechanical performance of the PSRC beams, the section stress distribution, cracking and deformation development charactistics during the constructing and employing stages will be fully analyzed, and the calculation methods which considering two-stage loads of the initial cracking loads, maximum crack width and mid-span deflection will be founded.Finally，a series of quasi-static tests of the PSRC beams will also be conducted, and the seicmic performance of the PSRC beams such as the failuare modes,bearing capacity and the deformation ability will be fully studied ,and the restoring force model of the PSRC beams as well as the seismic design methods will be founded.

英文关键词： steel reinforce concrete beam;prefabricated structures;mechanical behaviors;design method;experiment study