超高层塔楼连廊及下挂钢结构整体累积提升施工方案优化研究
作者简介:
王成武,正高级工程师,E-mail:185088043@ qq. com
作者单位:
1.中国建筑第五工程局有限公司,湖南长沙 410000; 2.清华大学土木工程系,北京 100084; 3.中建五局华南建设有限公司,广东深圳 518000
基金项目:
∗国家自然科学基金面上项目(52378164);河北省科技计划资助项目(22284501Z);中建五局重点研发项目:超高层项目智能建造成套关键技术研发及应用(CSCEC5B-2024-5);中施企协青年课题:基于结构检测的复杂连廊施工安全控制方法研究(2024-B-011);中施企协青年课题:超重大跨度连廊及上托下挂幕墙异型钢结构高空施工关键技术(2024-B-008)
摘要:
超高层复杂钢结构的力态与形态控制是施工过程中的关键问题。施工结构的位形和力学特征取决于施工方案的合理性与优化程度,因此合理的施工方案是精准化施工的基础,可大大简化设计和施工流程。以深超总 C塔工程为案例,基于一体化协同分析,系统优化连廊及下挂钢结构的整体累积提升与合龙施工过程。首先,提出了4 步、5 步和 6 步提升法,对比分析不同方案对结构变形和受力的影响规律;其次,揭示了提升点高度位置与结构应力、变形的关系,据此确定最优提升点位;最后,通过对比两种合龙方案的后补构件,量化评估了合龙顺序对结构力学性能的影响。

English:
The force and shape control of super high-rise complex steel structures is the key problem inthe construction process. The configuration and mechanical characteristics of the construction structuredepend on the rationality and optimization of the construction scheme. Therefore, a reasonableconstruction scheme is the basis of precise construction,which can greatly simplify the construction anddesign process. Taking the Tower C project of the Shenzhen Bay Super Headquarters Base as anexample, based on the integrated collaborative analysis, the overall cumulative lifting and closureconstruction process of the corridor and the underlying steel structure are systematically optimized.Firstly, four-step, five-step, and six-step lifting methods are proposed, and the influence of differentschemes on structural deformation and stress was compared and analyzed. Secondly, the relationshipbetween the height of the lifting point and the structural stress and deformation was revealed, and theoptimal lifting point was determined. Finally, the influence of the closure sequence on the mechanicalproperties of the structure was quantitatively evaluated by comparing the post-filled components of the twoclosure schemes.