华润总部大楼多柱交叉钢节点设计

发布时间：2018-05-14 16:20

本文选题：超高层建筑 + 复杂节点　；参考：《建筑结构学报》2017年05期

【摘要】：华润总部大楼,建筑高度400 m,外形酷似"春笋",采用筒中筒结构。为与建筑外形相协调,结构外筒为斜交钢网格,局部楼层存在较为复杂的多柱交叉节点。从传力路径入手,详细介绍了底层柱交叉节点的设计和验证过程,包括节点区板件连接方案的选择、板厚的优化与确定、以及节点的细部构造等。为降低加工和安装的难度,对节点构造进行的简化会使节点产生附加内力。在工程中,节点区面板的处理使得节点区承受附加弯矩,其引起的次应力约占到初始应力的40%,设计中不容忽视。验证性试验结果表明,有限元分析结果与试验结果一致,证明节点设计基本合理,在设计荷载作用下节点处于弹性工作状态,可有效传递荷载。研究表明,复杂节点设计应全面分析其传力路径的可靠性和细部构造对节点的影响,方能确保设计安全。
[Abstract]:China Resources headquarters building, building height of 400 m, shape similar to "spring bamboo shoots", using tube-tube structure. In order to coordinate with the shape of the building, the outer tube of the structure is an oblique steel mesh, and there are complex multi-column cross joints in the local floors. Starting with the load transfer path, the design and verification process of the bottom column cross joint is introduced in detail, including the selection of the connection scheme in the joint area, the optimization and determination of the plate thickness, and the detailed construction of the joint. In order to reduce the difficulty of processing and installation, the simplification of joint structure will cause additional internal force. In the engineering, the treatment of the joint face panel makes the joint area bear additional bending moment, and the secondary stress caused by the secondary stress is about 40% of the initial stress, which can not be ignored in the design. The experimental results show that the finite element analysis results are consistent with the experimental results, and it is proved that the design of the joints is basically reasonable, and the joints are in an elastic working state under the action of the design load, which can effectively transfer the load. The results show that the reliability of the transmission path and the influence of detail structure on the design of complex joints should be comprehensively analyzed in order to ensure the safety of the design.
【作者单位】：悉地国际设计顾问(深圳)有限公司;深圳市欧博工程设计顾问有限公司;
【分类号】：TU973.3

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