核心型钢混凝土组合结构体系应用前瞻

Prospect of core steel reinforced concrete structures

主要介绍了核心型钢混凝土组合结构体系在高层住宅建筑中的应用前景和性能优势,分析了核心型钢混凝土组合结构体系在国内外的研究现状,并探讨了核心型钢混凝土组合结构目前存在的主要问题。对21个不同配钢形式的核心型钢混凝土柱试件进行截面非线性分析。分析结果表明,各种形式核心配钢均能有效提高柱截面在较高轴压比下的曲率延性系数。介绍了2个核心型钢混凝土组合结构工程实例。在综合分析基础上,提出了核心型钢混凝土组合结构体系的抗震设计建议和深入研究思路。

Based on sIRe （Steel Reinforced Concrete） structures,a new structure form named CSRC （ Core Steel Reinforced Concrete） structure was developed. Significances and remarkable advantages of CSRC structures in high-rise residential were analysed. Summed up relative researches on CSRC structures at home and aboard, the key technology and main problems of engineering application and seismic design of CSRC structures were posed. Nonlinear analysis on section mechanical behaviour of 14 CSRC column specimens was conducted using the SCI section builder-8 computer program. It was concluded that the core shaped-steel could obviously improve the section ductility of CSRC columns under large axial compression, but had little effect on moment-bearing capacity of the CSRC column section. Two practical engineering examples of CSRC structure were introduced. Methods of seismic design and programme of further research on CSRC structures were finally advised.