（中南建筑设计院股份有限公司， 武汉 430071）

［摘要］华电集团华中总部基地由主楼、裙楼、附楼和四层地下室组成，基础采用桩筏基础。地下室设计时，为了节约造价、提高使用空间，将外墙和支护的地下连续墙合二为一。地上建筑通过防震缝形成主楼、裙楼、附楼三个独立单元。主楼为“门”形复杂连体超限高层建筑，通过方案比选，采用了框架核心筒混合结构方案，即钢筋混凝土核心筒+圆钢管混凝土柱+钢梁+加强层（伸臂及腰桁架）。主楼连体通过方案比选采用大网格巨型跨层钢桁架结构。为提高主楼两个塔楼抗侧刚度，对加强措施进行了分析，并采用了加强层、加密框柱等措施。对主楼结构布置、关键节点设计进行了研究；做了风洞试验并根据试验结果进行风荷载作用下结构响应的计算；对主楼舒适度、塔楼施工稳定性也进行了验算。结果满足设计要求，确保结构的安全性和适用性。

［关键词］超高层；　连体结构；　加强层；　巨型跨层桁架；　风洞试验

中图分类号：TU398-7文献标识码：A文章编号：1002-848X(2020)08-0057-07

Structural design on buildings of Central China Headquarters of Huadian Group

CHEN Xiaoqiang, LI Ting, LI Hongsheng, CHEN Yuankun, CHEN Yanzhou, WANG Xiaonan, XIONG Zhengchao, TONG Juxian

(Central-South Architectural Design Institute Co., Ltd., Wuhan 430071, China)

Abstract:The buildings of Central China Headquarters of Huadian Group are composed of main building, podium building, annex building and four basement floors. Pile raft foundation is adopted as the foundation. In the design of basement, the exterior wall and the supporting diaphragm wall are combined into one in order to save the cost and improve the use space. Through the seismic joints, the above ground buildings form three independent units including the main building, the podium building and the annex building. The main building is complex connected out-of-code high-rise building of "door" shape and the frame-corewall hybrid structural scheme is adopted through scheme comparisons, that is, reinforced concrete corewall + concrete filled steel circular tubular column + steel beam + strengthened story with outriggers and waist trusses. Through the scheme comparisons, the main building adopts the large grid cross-layer steel truss structure. In order to improve the lateral stiffness of the two towers of the main building, the strengthening measures were analyzed, and the measures such as strengthening story and encrypting frame columns were adopted. The structure layout and key joint design of the main building were studied; the wind tunnel test was conducted and the structural response under the wind load was calculated according to the wind tunnel test results; the comfort degree of the main building and the construction stability of the tower were also checked. The results met the design requirements and ensured the safety and applicability of the structure.

Keywords:super high-rise building; connected structure; strengthened story; mega cross-layer truss; wind tunnel test