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（1 浙江大學(xué)建筑設(shè)計(jì)研究院  杭州 310027； 2 珠海市晶藝玻璃工程有限公司  珠海 519015）

［提要］  對(duì)空透型屋架的外觀要求，提出雙向復(fù)式張弦梁這種新型大跨度空間結(jié)構(gòu)形式，以浙江大學(xué)新校區(qū)圖書信息中心門廳采光頂工程為例，闡明對(duì)零狀態(tài)、初始態(tài)和荷載態(tài)的理解及相應(yīng)計(jì)算分析方法與步驟；分析該結(jié)構(gòu)在穩(wěn)定、整體剛度、抗風(fēng)能力等方面的特點(diǎn)；介紹關(guān)鍵節(jié)點(diǎn)構(gòu)造與施工方法和進(jìn)一步優(yōu)化設(shè)計(jì)的構(gòu)想。

［關(guān)鍵詞］  張弦梁  雙向復(fù)式  結(jié)構(gòu)分析  構(gòu)造  空間結(jié)構(gòu)

Design of Two-way Compound Beam String Structures/Authors:Liu Guomin1, Yi Jia2,Qiu Tao1(1 Architectural Design Institute of Zhejiang University, Hangzhou 310027, China; 2 King Glass Eng. Co.,Ltd., Zhuhai 519015, China)

Abstract:A two-way compound beam string structure is proposed which is a new style of spatial structures, to meet the visual requirement of transparent roofs. Taking the natural lighting roof for the lobby of the library information center in the new campus of Zhejiang University as an example, we presents the method and procedures for the analysis and design of the structure based on the understanding of its three states. The behaviors of the structure, including the structural stability, integral stiffness, wind resistance and etc., have been investigated and analyzed. Discuss on the further optimization of the structure is presented. And the fabrication for the key joints of the structure and the construction method used are described.

Keywords:beam string structure; two-way compound; structural analysis; fabrication