- 摘 要
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(1 清華大學土木工程系， 北京 100084；2 北京市住宅建筑設計研究院有限公司， 北京 100005；3 北京東方京寧建材科技有限公司， 北京 101205)
［摘要］ 以北京亦莊X39地塊學校溜冰場大跨度、大荷載樓蓋為例，首先介紹此類構件設計的基本內(nèi)容，包括板的力學模型、預應力筋形式、正截面承載力計算、空心區(qū)上翼緣受壓高度的局部調(diào)整、斜截面承載力計算、板跨中變形計算等；在構件設計基礎上，介紹了空心板結(jié)構整體設計過程，包括計算模型、預應力效應的考慮、舒適度的計算等；結(jié)合本工程的具體特點，在施工中又采取了一些技術優(yōu)化措施，最后取得了很好的技術經(jīng)濟效果。
［關鍵詞］預應力；空心板；大跨度；大荷載
中圖分類號：TU398-7 文獻標識碼：A文章編號：1002-848X(2021)22-0061-05
Application of prestressed hollow slab technology in large span floor
XU Yan1, LIU Fengyan2, LI Haojie1, WANG Xianglan2, LI Li2, ZHAO Zuozhou1, RUAN Lei3
(1 Department of Civil Engineering, Tsinghua University, Beijing 100084，China；2 Beijing Institute of Residential Building Design & Research Co., Ltd., Beijing 100005， China；3 Beijing Oriental Jingning Building Materials Technology Co., Ltd., Beijing 101205，China)
Abstract: Taking the large-span and large-load floor of the school ice rink in Beijing Yizhuang X39 Site as an example, first the basic contents of this kind of member design were introduced, including the mechanical model of slab, the form of prestress tendons, the calculation of normal section bearing capacity, the local adjustment of compression height of upper flange in hollow area, the calculation of oblique section bearing capacity, the calculation of slab mid span deformation, etc. On the basis of member design, the overall design process of hollow slab structure was introduced, including calculation model, consideration of prestress effect, calculation of comfort, etc. Combined with the specific characteristics of the project, some technical optimization measures were taken in the construction, and finally good technical and economic results were achieved.
Keywords:prestressed； hollow slab； large-span； large-load
作者簡介：徐焱，碩士，教授級高級工程師，Email:13801028424@139.com； 通信作者：趙作周，博士，副教授，Email:zzzhao@tsinghua.edu.cn。
