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(1中南建設(shè)控股集團(tuán)，蘇州 215021；2同濟(jì)大學(xué)建筑設(shè)計(jì)研究院(集團(tuán))有限公司，上海 200092;3同濟(jì)大學(xué)建筑工程系，上海200092)

[摘要]  伸臂系統(tǒng)作為一種創(chuàng)新和高效的結(jié)構(gòu)抗側(cè)力體系，近幾十年來(lái)在超高層建筑中得到了廣泛應(yīng)用。對(duì)伸臂系統(tǒng)進(jìn)行合理的優(yōu)化可以有效增加結(jié)構(gòu)抗側(cè)剛度、降低用鋼量、加快施工工期、增加建筑及設(shè)備空間。由于實(shí)際工程設(shè)計(jì)中超高層建筑結(jié)構(gòu)常常要滿(mǎn)足多種約束條件，如整體剛度、結(jié)構(gòu)穩(wěn)定性、最小地震基底剪力及自振周期等，伸臂系統(tǒng)的優(yōu)化是一個(gè)多約束優(yōu)化問(wèn)題。運(yùn)用傳統(tǒng)的嘗試驗(yàn)算方法獲得多約束條件下伸臂的優(yōu)化方案常常是費(fèi)時(shí)費(fèi)力的。為尋找伸臂系統(tǒng)在滿(mǎn)足多種設(shè)計(jì)條件下的最優(yōu)位置和數(shù)量，本文進(jìn)一步發(fā)展了作者之前提出的靈敏度向量算法。該算法是十分高效的，其優(yōu)化結(jié)論可以加深設(shè)計(jì)人員關(guān)于不同設(shè)計(jì)約束條件對(duì)伸臂系統(tǒng)優(yōu)化設(shè)計(jì)影響的理解。最后，通過(guò)對(duì)一個(gè)超高層建筑案例的分析闡述了該算法的運(yùn)用過(guò)程及其有效性。

[關(guān)鍵詞]  伸臂系統(tǒng)；結(jié)構(gòu)優(yōu)化；超高層建筑結(jié)構(gòu)；多約束

中圖分類(lèi)號(hào)：TU972          文獻(xiàn)表識(shí)碼：A           文章編號(hào)： 14S1206

Outrigger optimization for super tall buildings under multiple design constraints

Xu Moukui¹, Zhao Xin² , Ding Kun², Xu Fang², Jiang Xiang³

(1 ZhongNan Construction Group Co., Ltd., Suzhou 215021,China；  2 Tongji Architectural Design (Group) Co., Ltd., Shanghai 210096, China； 3 Department of Building Engineering, Tongji University, Shanghai 210096, China；)

Abstract: As an innovative and efficient structural lateral load resisting system, the outrigger system has come into widespread use in super tall buildings in recent decades. The optimization of the outrigger system can significantly increase structural lateral stiffness, decrease steel tonnage, reduce construction period and make extra space for usable floor area and equipments. The optimization of outrigger system is a multiple design constraints optimization problem due to the fact that the engineering design of super tall building has to satisfy numerous design requirements, such as overall stiffness, structural stability, minimum earthquake base shear, the vibration period and etc. It's usually a laborious and time-consuming process to obtain the optimal scheme for the outrigger under multiple design constraints by the conventional trial-and-error procedure. A sensitivity vector method proposed by the authors was further developed in this paper for finding the optimal position and number of outriggers to meet the multiple design constraints. The proposed sensitivity vector method is of high efficiency. The optimization results obtained by the sensitivity vector method can produce in-depth engineering understandings on how the different design constraints contribute to the optimal design of outrigger system. Finally, the proposed sensitivity vector method was adopted in the case study of a super tall building to illustrate the application and effectiveness of this method.

Keywords: outrigger system；structural optimization；super tall building；multiple design constraints

參考文獻(xiàn)

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