- 摘 要
-
（上海江歡成建筑設(shè)計有限公司， 上海 200070）
［摘要］太湖試驗廳平面尺寸150m×150m，為內(nèi)部無柱的大跨建筑，其鋸齒形屋面造型對結(jié)構(gòu)設(shè)計有很大挑戰(zhàn)。經(jīng)過對比雙向網(wǎng)架結(jié)構(gòu)方案、采用貼合屋面造型的斜放隨形三角形桁架拱方案和采用貼合屋面造型的斜放隨形平面桁架拱方案的優(yōu)缺點，并綜合造價、施工、建筑造型等因素，最終決定采用貼合屋面造型的斜放隨形平面桁架拱的結(jié)構(gòu)方案。通過對所選結(jié)構(gòu)進行合理結(jié)構(gòu)布置和針對性的分析計算，以及對拉索預(yù)應(yīng)力、屋面梁形式、屈曲穩(wěn)定、連續(xù)倒塌等的專項研究得出，所選結(jié)構(gòu)方案在受力階段的承載力和剛度均合理，結(jié)構(gòu)整體性較強，未出現(xiàn)局部薄弱的情況，該結(jié)構(gòu)具有良好的抗震性能和防連續(xù)倒塌性能，是較為合理且高效的結(jié)構(gòu)形式。
［關(guān)鍵詞］鋼結(jié)構(gòu)； 大跨結(jié)構(gòu)； 試驗廳； 拱架； 預(yù)應(yīng)力拉索
中圖分類號：TU393-3文獻標(biāo)識碼：A文章編號：1002-848X(2019)06-0017-06
Largespan steel structural design of Taihu Experiment Hall
Zeng Jing, Wang Xiangfeng, Du Gang, Jiang Huancheng, Zhu Min
(Jiang′s Architects & Engineers, Shanghai 200070, China)
Abstract:The plane dimension of Taihu Experiment Hall is 150m×150m, which is a large-span building without internal columns. Its zigzag roof shape is a great challenge to the structural design. The advantages and disadvantages of three schemes were compared, including the two-way grid structure scheme, the inclined conformal triangular truss arch scheme with the conformal roof model and the inclined conformal plane truss arch scheme with the conformal roof model, and the factors of cost, construction and architectural modeling were combined to select the third structural scheme. Through reasonable structural layout and pertinent analysis and calculation, as well as special research on cable prestressing, roof beam form, buckling stability and continuous collapse, it is concluded that the bearing capacity and stiffness of the selected structural scheme are reasonable in the stage of loading; the structural integrity is strong; and there is no local weakness. The structure has good seismic performance and progressive collapse resistance performance, so it is a reasonable and efficient structural form.
Keywords:steel structure; large-span structure; experiment hall; arch truss; prestressed cable
作者簡介：曾菁，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email：jing_zeng@jiangs.com.cn。
