(浙江省建筑设计研究院, 杭州 310006)

摘要: 台州方远大饭店主楼 4 ~ 6 层立面开双洞,洞口净宽分别为 35m 和 13m,净高均为 12m,采用新型型钢混凝土组合桁架实现洞口跨越构成整体连体结构。 针对该项目的结构特点、难点,阐述了结构薄弱部位与关键技术。探讨了连体结构选型、托柱转换组合桁架及长悬挑组合桁架的选用类型。 归纳了罕遇地震下整体结构指标与关键结构构件的损伤情况。 论述了转换桁架支承柱及连接节点等关键构件与节点设计。 开展了罕遇地震下连体楼板地震应力分析与连体结构施工模拟专项分析。 分析了超长连体结构温差效应,采用了新型诱导缝等关键技术来减弱温差效应。 目前项目已交付使用,满足建筑造型及使用功能要求,验证了分析研究及设计对策的可行性。

关键词: 双洞连体结构; 托柱转换组合桁架; 抗震性能分析; 施工模拟; 超长连体结构

中图分类号:TU318 文献标志码:A 文章编号:1002-848X(2022)15-0058-06

DOI:10. 19701 / j. jzjg. ZIAD2229

Structural design and key technology of double-hole connected complex structure ofTaizhou Fangyuan Hotel

ZHOU Yongming, XU Weibin, GAO Chao, QI Yazhen, MA Hongli

( Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China)

Abstract: The main building of Taizhou Fangyuan Hotel has double holes on the façade of the 4th to 6th floors. The netwidth of double holes is 35m and 13m respectively, and the net height are both 12m. The new type steel reinforced concretecomposite trusses are used to realize the span of the openings to form an integral connecting structure. In view of thestructural characteristics and difficulties of the project, the weak parts and key technologies of the structure wereexpounded. The selection of connected structure, column transfer composite truss and long cantilever composite truss werediscussed. The index of overall structure and the damage of key structural components under rare earthquake weresummarized. The design of key components and joints such as the supporting columns and connecting joints of the transfertruss was described. the seismic stress analysis of conjoined slabs under rare earthquake and special analysis of constructionsimulation of connected structure were conducted. The temperature effect of ultra-long connected structure was analyzed andkey technologies such as new inducing joint were used to reduce temperature effect. At present the project has been put intouse and it meets the requirements of architectural modeling and use function, which verifies the feasibility of analysis anddesign countermeasures.

Keywords:double-hole connected structure; column transfer composite truss; seismic performance analysis; constructionsimulation analysis; ultra-long connected structure

∗浙江省建筑设计研究院科研项目(2021K06) 。

第一作者:周永明,硕士,正高级工程师,主要从事超高层结构和复杂结构设计工作,Email:9764zym@ sina. com。

[引用本文] 周永明,徐伟斌,高超,等. 台州方远大饭店双洞式连体复杂结构设计及关键技术[ J] . 建筑结构,2022,52(15) :58-63. ZHOU Yongming,XU Weibin,GAO Chao,et al. Structural design and key technology of double-holeconnected complex structure of Taizhou Fangyuan Hotel[ J] . Building Structure,2022,52(15) :58-63.