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(1 東南大學(xué)土木工程學(xué)院, 南京 210096;2 中衡設(shè)計(jì)集團(tuán)股份有限公司, 蘇州 215123)

摘要: 對(duì)于邊界條件復(fù)雜的結(jié)構(gòu),其在施工、使用、加固與改造等過(guò)程中結(jié)構(gòu)剛度將發(fā)生較大變化,故應(yīng)采用變剛度的設(shè)計(jì)思想. 以蘇州第二工人文化宮為例,針對(duì)其不同的單體結(jié)構(gòu)與不同的狀態(tài)提出了相應(yīng)的變剛度設(shè)計(jì)方案. 蘇州第二工人文化宮地上分為 A 區(qū)(場(chǎng)館區(qū))、B 區(qū)(中庭及影劇院區(qū))、C 區(qū)(游泳館及配套區(qū))三個(gè)大區(qū). A區(qū)屋面采用大跨度鋼梁+輕鋼屋面形式,采用常規(guī)設(shè)計(jì)方法時(shí)鋼梁端部彎矩較大. 采用變剛度設(shè)計(jì)方法,通過(guò)施工過(guò)程措施釋放了恒載下的梁端彎矩,有效降低了焊縫、螺栓與埋件的設(shè)計(jì)需求. B 區(qū)結(jié)構(gòu)連接關(guān)系復(fù)雜,各單體動(dòng)力特性差異較大,而中庭結(jié)構(gòu)無(wú)法與其相鄰建筑實(shí)現(xiàn)脫開設(shè)計(jì),采用鉛芯橡膠支座連接中庭與相鄰單體,實(shí)現(xiàn)了在不同荷載工況下的變剛度設(shè)計(jì),通高柱應(yīng)力比小于設(shè)計(jì)目標(biāo),中庭屋面變形滿足規(guī)范要求. C 區(qū)室內(nèi)游泳館屋蓋為張弦木梁結(jié)構(gòu),通過(guò)多種模型對(duì)比分析,發(fā)現(xiàn)考慮木撐桿蠕變效應(yīng)與初始缺陷造成的剛度變化將導(dǎo)致屋蓋結(jié)構(gòu)豎向變形、木撐桿與木梁應(yīng)力的增大以及鋼拉索應(yīng)力的減小,且初始缺陷的影響更為顯著.

關(guān)鍵詞: 蘇州第二工人文化宮;變剛度設(shè)計(jì);施工過(guò)程;鉛芯橡膠支座;蠕變;初始缺陷

中圖分類號(hào):TU318+. 1 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)20-0104-08

DOI:10.19701 / j.jzjg.ZJ220028

Research and application on structural design of Suzhou No. 2 Workers’ Cultural Palace considering variable stiffness

ZHANG Jin1,2, YANG Lülei2, LU Jianglong2, SHEN Xiaoming2

(1 School of Civil Engineering, Southeast University, Nanjing 210096, China?2 ARTS Group Co. , Ltd. , Suzhou 215123, China)

Abstract: For the structure with complex boundary conditions, the structural stiffness changes greatly in the process ofconstruction, use, reinforcement and transformation, so the design idea of variable stiffness should be adopted. TakingSuzhou No. 2 Workers’ Cultural Palace as an example, according to its different unit structures and different states, thecorresponding variable stiffness design schemes were put forward. Suzhou No. 2 Workers’ Cultural Palace was divided intothree areas: Area A (venue area), Area B (atrium and cinema area), and Area C (natatorium and supporting area). Theroof of Area A adopted the form of large-span steel beam + light steel roof, and the bending moment of the end of the steelbeam was large when the conventional design method is adopted. With the method of variable stiffness design, the beamend bending moment under dead load was released through the construction process measures, which effectively reduced thedesign requirements of welds, bolts and embedded parts. The structural connection relationship of Area B was complex,and the dynamic characteristics of each unit were quite different. However, the atrium structure could not be designed to beseparated from its adjacent buildings. The lead-core rubber bearing was used to connect the atrium and the adjacentmonomers, and the variable stiffness design under different load conditions was realized. The full-height column stress ratiowas less than the design target, and the atrium roof deformation met the specification requirements. The roof of the indoorswimming pool in Area C was the structure of stretched strings and wooden beams. Through the comparative analysis ofvarious models, it shows that considering the creep effect of the wooden struts and the stiffness change caused by the initialdefects leads to the vertical deformation of the roof structure, the increase of stress of the wooden struts and the woodenbeams, and the decrease of steel cable stress, and the influence of initial defects is more significant.

Keywords:Suzhou No. 2 Workers’ Cultural Palace;variable stiffness design;construction process;lead-core rubberbearing;creep;initial defect

第一作者:張謹(jǐn),博士研究生,研究員級(jí)高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,英聯(lián)邦結(jié)構(gòu)工程師學(xué)會(huì)會(huì)員及特許結(jié)構(gòu)工程師,主要從事復(fù)雜結(jié)構(gòu)設(shè)計(jì)技術(shù)與多高層鋼結(jié)構(gòu)抗震性能化設(shè)計(jì)技術(shù)研究工作,Email: zhangjin@ artsgroup. cn.

[引用本文] 張謹(jǐn),楊律磊,路江龍,等. 蘇州第二工人文化宮結(jié)構(gòu)變剛度設(shè)計(jì)思考與實(shí)踐[ J]. 建筑結(jié)構(gòu),2022,52(20):104-111. ZHANG Jin,YANG Lülei,LU Jianglong,et al. Research and application on structural design of SuzhouNo. 2 Workers’ Cultural Palace considering variable stiffness[J]. Building Structure,2022,52(20):104-111.