装配式预应力叠合平板-内置钢管混凝土异形柱结构抗震机理与设计方法研究

Prefabricated composite structures with prestressed composite flat plate and concealed concrete-filled steel tubular column, is a new building system which is suitable for livable residence and new type construction industrialization. The structure has flexible space layout, simple construction, reasonable stress and low cost. Punching shear behavior and seismic behavior of the structure system are the key points for its application. The structure is taken as the research object in this topic, punching shear behavior and seismic behavior of the structure system are studied by means of test and calculation. The new structure system needs comprehensive consideration of prestress, specially shaped column, reinforcement ratio and construction measures, the bearing capacity, failure mechanism are investigated. The formula of punching shear, failure criterion and numerical model are presented, Design parameters are improved for its application. Design methods and construction measures will be proposed in order to lay a foundation for the engineering application and the development of livable prefabricated structures. It can also provide the necessary reference for enact of related codes or standards.

装配式预应力叠合平板-内置钢管混凝土异形柱结构是一种适合于工业化建造的新型建筑结构体系，是基于“百年住宅”宜居设计理念与新型建筑工业化发展及要求进行研发的，具有空间布置灵活、施工简便、受力合理、造价较低等特点。其中该结构连接节点抗冲切性能、整体抗震性能是该结构得以推广应用的关键技术问题和重要决定因素。本课题以装配式预应力叠合平板-内置钢管混凝土异形柱为研究对象，全面考虑预应力、异形内置钢管混凝土柱、配筋率及连接构造等因素影响，借助试验及理论分析研究其节点抗冲切性能及整体构件抗震性能，研究其承载力、受力机理、破坏机制，提出该结构节点抗冲切承载力计算公式与破坏准则，揭示其抗震机理，建立合理的弹塑性数值模型及关键参数校核确定，优化设计参数，建立装配式预应力叠合平板-内置钢管混凝土异形柱结构设计方法和构造措施，为工程应用并促进我国宜居装配式建筑发展奠定基础，为制定与完善相应标准、规范提供参考依据。

装配式预应力叠合平板-内置钢管混凝土异形柱结构是一种适合于工业化建造的新型建筑结构体系，是基于“百年住宅”宜居设计理念与新型建筑工业化发展及要求进行研发的，具有空间布置灵活、施工简便、受力合理等特点。其中该结构连接节点抗冲切性能、整体抗震性能是该结构得以推广应用的关键技术问题和重要决定因素。经过四年来深入研究，提出了具有自主知识产权的含空间钢托板的板柱节点设计方法和套筒连接钢管混凝土叠合柱连接方法，以装配式预应力叠合平板-内置钢管混凝土异形柱为研究对象，全面考虑钢托板尺寸与开缝、预应力、异形内藏钢管混凝土柱、配筋率及连接构造等因素影响，借助试验及理论分析研究其节点抗冲切性能及整体构件抗震性能，研究其承载力、受力机理、破坏机制，提出该结构节点抗冲切承载力计算公式与破坏准则，揭示其抗震机理，建立合理的弹塑性数值模型及关键参数校核确定，优化设计参数，建立装配式预应力叠合平板-内置钢管混凝土异形柱结构设计方法和构造措施。该项目发表核心期刊以上论文13篇，获得发明专利授权3项（8项审查中）、实用新型6项，培养硕士生8人，博士在读1人，签订校企合作合同2项，为工程应用并促进我国宜居装配式建筑发展奠定基础，为制定与完善相应标准、规范提供参考依据。