(1 中海企业集团有限公司, 深圳 518046; 2 香港华艺设计顾问 (深圳) 有限公司, 深圳 518031;3 宋腾添玛沙帝公司, 纽约 10010; 4 中国建筑科学研究院有限公司, 北京 100013)

摘要: 中海成都天府新区超高层项目采用 8 根巨柱的巨型框架-核心筒-伸臂桁架结构体系,建筑外立面沿高度锥形收进。 巨柱双向内倾,角部两巨柱最小距离控制不小于 9. 4m,相对应角部结构最大净悬挑 12. 45m。 为保证楼面结构具有足够的冗余度,采用两阶段方法进行设计。 建筑角部与悬挑部位舒适度控制尤为重要,结合幕墙龙骨位置,创新性地采用振动杆技术,通过串连避难层之间 8 层楼面的方式大幅改善楼盖舒适度,在实现超长结构悬挑、营造角部无柱空间、保证绝佳视觉体验的同时也确保了结构的安全性与经济性。

关键词: 巨型结构; 角部超长悬挑; 两阶段设计方法; 振动杆; 楼面舒适度

中图分类号:TU318. 2 文献标志码:A 文章编号:1002-848X(2022)23-0114-06

DOI:10. 19701 / j. jzjg. 20220339

Analysis and research on corner super-long cantilevered floor of a project

LI Jianwei1,2, ZHANG Qinglin1, HUANG Guohui1, BILLY Tse3, CHEN Caihua4

(1 China Overseas Development Group Co. , Ltd. , Shenzhen 518046, China; 2 Hong Kong Huayi Design Consulting(Shenzhen) Co. , Ltd. , Shenzhen 518031, China; 3 Thornton Tomasetti, Inc. , New York 10010, US;4 China Academy of Building Research, Beijing 100013, China)

Abstract: China Overseas Property Chengdu Tianfu New District super high-rise project adopts a mega frame-corewalloutrigger structural system with 8 giant columns. The building facade is taperly set back along the height. The giantcolumns are inclined inward in two directions, and the minimum distance between the two giant columns at the corner iscontrolled to be no less than 9. 4m, and the maximum net cantilever of the corresponding corner structure is 12. 45m. Inorder to ensure that the floor structure has sufficient safety redundancy, the two-stage design method was adopted. Thecomfort control of the cantilevered part of the corner of the building was particularly important. The vibrating rod technologywas innovatively adopted combined with the position of the curtain wall keels to greatly improve the floor comfort byconnecting 8 office floors between the refuge floors in series. This realized the super-long floor cantilever, created columnfree corners, created an excellent visual experience and realized the safety and economy of the structure.

Keywords:mega structure; corner super-long cantilever; two-stage design method; vibrating rod; floor comfort

第一作者:李建伟,学士,教授级高级工程师,一级注册结构工程师,主要从事超高层等复杂结构设计,Email:lijianwei@huayidesign. com。

[引用本文] 李建伟,张庆林,黄国辉,等. 某项目角部超长悬挑楼盖分析与研究[ J]. 建筑结构,2022,52(23):114-119. LI Jianwei ,ZHANG Qinglin ,HUANG Guohui,et al. Analysis and research on corner super-long cantileveredfloor of a project[J]. Building Structure,2022,52(23):114-119.