登录
注册
Comparative Analysis on Construction of Four-Side Suspension Structure in High-Rise Buildings
-
摘要: 某地块研发项目3栋塔楼均采用四面悬挂式结构体系。该悬挂结构体系由核心筒、悬挑桁架、悬挂外框（吊柱、钢梁）结构组成。塔楼结构顶标高为59.900 m，每栋倒挂8层外框结构。外侧悬挂钢柱由下至上将力传递到塔楼顶部悬挑桁架上，最终由顶部桁架传递到核心筒结构。由于四面悬挂式结构体系相较传统结构体系安装精度要求更高、传力路径更加复杂、施工难度更大。根据项目特点、传力路线等确定了逆作法和顺作法两种施工方法。逆作法施工主要控制和验算分析的重点为：悬挂外框架下部临时支撑体系的设计及计算，4层及以下混凝土楼层验算复核，屋顶桁架施工顺序，钢柱压、拉受力转换及各阶段钢柱轴力计算，施工可行性分析并总结。顺作法施工主要控制和验算分析的重点为：悬挂外框架下部临时支撑体系的设计及计算，4层及以下混凝土楼层验算复核，屋顶桁架施工顺序，钢柱压、拉受力转换及各阶段钢柱轴力计算，施工可行性分析并总结。综合对比不同方案的施工便利性、安全性、最终成型状态等主要影响因素，对施工全过程进行施工仿真模拟计算并进行验证，进一步对比不同方案的可行性，为类似工程提供参考。Abstract: The three towers of an R&D project all adopt four-side suspension structural system. The suspended structure system is composed of core tube， cantilever truss， and suspended outer frame （davit， steel beam）. The top elevation of the tower structure is 59.9 meters， and each building is upside down with eight layers of frame structure. The external suspended steel columns transmit the force to the cantilever trusses at the top of the tower from the bottom up， and finally from the top trusses to the core structure. Compared with the traditional structure system， the four-side suspended structure system requires higher installation accuracy， more complex force transmission path and higher construction difficulty. The two construction methods determined based on project characteristics and force transfer route are reversed construction method and following construction method. The main control and checking analysis points of reverse construction method are： the design and calculation of the temporary support system of the lower part of the suspended outer frame， the 4th floor and the following floors mixed concrete checking， roof truss construction sequence， steel column pressure-tension force conversion， and steel column axial force calculation of the various stages， construction feasibility analysis and summary. The main control and checking analysis points of the following construction methods are as follows： the design and calculation of the temporary support system under the suspended outer frame， the 4th floor and below mixed concrete floor checking， roof truss construction sequence， steel column pressure-tension force conversion and steel column axial force calculation of the various stages， construction feasibility analysis and summary. Comprehensively comparing different schemes of the construction on convenience， safety， final forming state and other major factors. Whole process simulation and verification are conducted on the construction process， to further contrast the feasibility of different programs，and provide reference for similar projects.
-
[1] 颜潇潇，胡达敏，戚向明，等． gad企业总部大楼结构设计［J］． 建筑结构，2017，47（19）：1-8． [2] 王兴法，林超伟，许波，等． 贵阳201大厦结构体系研究［J］． 建筑结构，2012，42（3）：10-14． [3] 张卫东，李树杰，孙学水. 仁恒滨海中心高层悬挂结构施工技术［J］. 施工技术，2014，43（20）：18-21. [4] 江浩文. 实例分析超高层建筑悬挂结构施工技术［J］. 建筑工程技术与设计，2018（12）：307，337. [5] 肖炯. 异型超高层悬挂结构施工技术研究［J］. 城市建筑，2016（18）：91-91，93. [6] 袁波，曹平周，陈忠荣，等. 某公共建筑悬挂结构施工数值模拟［J］. 低温建筑技术，2015，37（1）：75-78. [7] 裴传飞，田云雨. 某高层建筑悬挂结构施工关键技术［J］. 建筑技术，2023，54（13）：1579-1582. [8] 裴传飞，徐琦，田云雨，等. 悬挂式高层建筑施工模拟分析［J/OL］. 建筑结构，1-7［ 2023-12-18］. https：//doi.org/10.19701/j.jzjg.20221222. [9] 王晓蓓，高振锋，伍小平． 上海中心大厦施工模拟分析［J］． 施工技术，2016，45（8）：30-33． [10] 余流，张嗣谦. 大跨度体内预应力桁架结构施工过程仿真分析与监测［J］. 施工技术，2013，42（20）：28-30. -
点击查看大图
计量
- 文章访问数: 55
- HTML全文浏览量: 14
- PDF下载量: 6
- 被引次数: 0
下载:
