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(清華大學(xué)建筑設(shè)計(jì)研究院有限公司,北京 100084)

摘要: 渭城中學(xué)體育館位于高烈度區(qū)且場(chǎng)地類別為Ⅲ2 類,抗震設(shè)防類別為重點(diǎn)設(shè)防類,地震作用是該結(jié)構(gòu)的控制作用,減小結(jié)構(gòu)重量成為了總體設(shè)計(jì)的關(guān)鍵.鑒于上述因素,針對(duì)本工程,提出了新型預(yù)應(yīng)力拉索-鋼筋混凝土組合大跨度梁,該梁由鋼筋混凝土梁、豎向 V 形撐桿、預(yù)應(yīng)力拉索組成,能充分發(fā)揮拉索和混凝土材料的特性,其中鋼筋混凝土梁的跨高比僅有 1 / 29.重點(diǎn)介紹了該梁幾何構(gòu)成、平面布置、設(shè)計(jì)方法和原則,并對(duì)大跨度預(yù)應(yīng)力樓蓋的舒適度進(jìn)行了評(píng)估.結(jié)果表明,在大跨度預(yù)應(yīng)力樓蓋中,采用鋼筋混凝土與預(yù)應(yīng)力拉索共同受力的大跨度結(jié)構(gòu),可以實(shí)現(xiàn)樓蓋較大的高跨比,經(jīng)濟(jì)性較好,樓蓋豎向振動(dòng)舒適度較高.相比普通預(yù)應(yīng)力混凝土梁,采用該梁能大幅度降低了結(jié)構(gòu)自重,同時(shí)降低了地震作用.

關(guān)鍵詞: 體育館;高烈度區(qū);預(yù)應(yīng)力混凝土空腹梁;大跨度梁;預(yù)應(yīng)力拉索-鋼筋混凝土組合梁

中圖分類號(hào):TU381,TU398 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)18-0041-07

DOI:10.19701 / j.jzjg.ZJ220044

Design of new prestressed cable-reinforced concrete composite large-span beam ofWeicheng Middle School Gymnasium

ZHU Duoe,YANG Xiao,LIU Yansheng,MIAO Lei,ZHAO Tianwen

(Architectural Design and Research Institute of Tsinghua University Co. ,Ltd. ,Beijing 100084,China)

Abstract: Weicheng Middle School Gymnasium is located in high-intensity area,the site category is Ⅲ2 ,the seismicfortification category is the key fortification category,and the earthquake action is the controlling action of the structure,and structural weight reduction is key to the overall design. In view of the above factors,new prestressed cable-reinforcedconcrete composite large-span beam was proposed for this project,the beam consists of reinforced concrete beams,verticalV-shaped struts,and prestressed cables,which can give full play to the characteristics of cables and concrete materials,and the span-to-height ratio of reinforced concrete beam is only 1 / 29. The geometrical composition,plan layout,designmethod and principle of the beam were mainly introduced. And the comfort of large-span prestressed floor was evaluated.The results show that using a large-span structure coupled with reinforced concrete and prestressed cables in a large-spanfloor can achieve a larger height-span ratio of the floor and economy is better,and vertical vibration comfort of the floor ishigher. Compared with ordinary prestressed concrete beams,the self-weight of the structure is greatly reduced by adoptingthe beam,and the earthquake action is reduced.

Keywords: gymnasium;high-intensity area;prestressed concrete hollow beam;large-span beam;prestressed cable-reinforced concrete composite beam

第一作者:朱朵娥,碩士,工程師,主要從事結(jié)構(gòu)設(shè)計(jì)工作,Email:774126344@ qq. com.

[引用本文] 朱朵娥,楊霄,劉彥生,等. 渭城中學(xué)體育館新型預(yù)應(yīng)力拉索-鋼筋混凝土組合大跨度梁設(shè)計(jì)[ J]. 建筑結(jié)構(gòu),2022,52(18):41-47. ZHU Duoe,YANG Xiao,LIU Yansheng,et al. Design of new prestressed cable-reinforcedconcrete composite large-span beam of Weicheng Middle School Gymnasium[J]. Building Structure,2022,52(18):41-47.