钢管节点性能化设计的研究现状与关键问题  

State of the art and key issues on performance-based design of steel tubular joints

作　　者：王伟[1] 陈以一[1] 赵宪忠[1] 

机构地区：[1]同济大学,上海200092

出　　处：《土木工程学报》2007年第11期1-8,共8页China Civil Engineering Journal

基　　金：国家自然科学基金(50578117)

摘　　要：钢管结构对大跨度公共建筑与中高层建筑来说是一种具有较强性能优势和广泛应用前景的结构形式。虽然钢管节点的静力与疲劳性能研究已经取得较多成果,但与大型结构工程实践提出的要求相比,仍存在许多不足。以性能化设计这一当代结构设计理念的发展趋势为背景,对国内外有关钢管节点力学性能的研究成果进行评述,指出目前主要的不足在于节点刚度评价准则的不完备、节点抗震与抗火性能研究的缺乏。在阐明基于结构整体行为的节点性能化设计概念的基础上,提出钢管节点性能化设计研究应该包括节点性能指标的确定和计算、节点分类准则的建立和考虑结构整体与局部相关性的设计方法的建立等内容。并进一步指出和探讨该研究领域需解决的若干关键技术问题。Steel tubular structure has lots of advantages and is widely used for large span public structures and medium-to-high-rise buildings. Although significant progress has been made in the study of static and fatigue behavior of tubular joints, many deficiencies still exist if compared with the demands of engineering practices. State-of-the-art research on the mechanical ＂behavior of tubular joints is reviewed, on the basis of Performance-Based Design philosophy. Studies on the criterion of rigidity estimation, earthquake and fire resistant performance of tubular joints are found to be insufficient. A concept of performance-based connection design by considering global structural response is described. Further study should include the determination and computation of indexes representing the joint behavior, the establishment of classification criteria for tubular joints and the foundation of design method considering global and local structural interactions. Several key issues are also identified and discussed.

关 键 词：钢管节点 性能化设计 非刚性性能 抗震性能 抗火性能 节点分类准则 节点与结构行为相关性 

分 类 号：TU392.3[建筑科学—结构工程]