（1 天津大学建筑工程学院， 天津 300072；2 天津市土木工程结构及新材料重点实验室， 天津 300072）

［摘要］以天津天山海世界米立方项目为工程背景，重点研究树状结构分杈级数对结构整体性能的影响。介绍了树状结构的二级分杈方案、一级分杈方案和普通柱方案，比较了三种方案在用钢量、支座反力、杆件内力、节点位移和自振频率方面的结构性能，得出结论：相比采用一级分杈方案而言，采用二级分杈方案可有效地减小杆件内力和节点最大竖向位移，有分杈方案结构的力学性能明显优于普通柱方案，说明树状结构的应用有利于结构的整体受力。

［关键词］树状结构; 方案比较; 二级分杈; 一级分杈; 普通柱

中图分类号：TU393.3，TU318.1      文献标识码：A      文章编号：1002-848X(2014)07-0065-06

Comparison and analysis of three tree structure schemes of Meters Cube

Zhang Qian1,2, Chen Zhihua1,2, Wang Xiaodun1,2, Liu Hongbo1,2

（1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Tianjin Key Laboratory of Civil Engineering Structure & New Materials, Tianjin 300072, China）

Abstract: The effect of different level branching of tree structures on the overall structure performance was studied based on Tianjin Tianshan Sea World Meters Cube project. Two-level branching scheme, one-level branching scheme and ordinary column scheme of tree structures were described and structure performance of three schemes were compared such as steel consumption, supporting reaction force, member internal force, node displacement and natural frequency. Conclusions are that two-level branching scheme can effectively reduce member internal force and node maximum vertical displacement compared to one-level branching scheme. The mechanical properties of the structure with branching scheme are much better than that with ordinary column scheme, and it indicates that the application of tree structure is conducive to its overall performance.

Keywords: tree structure; scheme comparison; two-level branching; one-level branching; ordinary column

*大型特殊结构布置条件下的钢结构工程设计、施工及控制关键技术研究(11ZCZDSF04800)。

作者简介：张倩,博士研究生, Email: popzhqly@163.com。

参考文献

［1］JEFFREY HUNT, WALTER HAASE, WERNER SOBEK. A design tool for spatial tree structures［J］. Journal of the International Association for Shell and Spatial Structures, 2009,50(1):3-10.

［2］武岳, 张建亮, 曹正罡. 树状结构找形分析及工程应用［J］. 建筑结构学报, 2011, 32(11): 162-168.

［3］张建亮. 树状结构形态分析与工程应用［D］. 哈尔滨: 哈尔滨工业大学, 2011.

［4］王明贵, 颜锋. 钢管树状结构设计［J］. 钢结构, 2006, 21(6): 47-49.

［5］陈俊, 张其林, 谢步瀛. 树状柱在大跨度空间结构中的研究和应用［J］. 钢结构, 2010, 25(3): 1-4, 21.

［6］谭德远. 黄金树结构两种节点可选方案的性能比较［J］. 钢结构, 2002, 17(3): 19-20.

［7］萨鹏程. 树状结构空间节点性能研究［D］. 哈尔滨: 哈尔滨工程大学, 2009.

［8］谭仲毅. 树状结构施工技术研究与应用［D］. 重庆: 重庆大学, 2002.

［9］王亚丽. 弦支拱桁架单层网壳复合结构体系的分析与研究［D］. 天津: 天津大学, 2011.