预应力空心板技术在大跨度楼盖中的应用  

Application of prestressed hollow slab technology in large span floor

作　　者：徐焱[1] 刘峰岩 李豪杰 王香兰 李莉 赵作周[1] 阮蕾 XU Yan;LIU Fengyan;LI Haojie;WANG Xianglan;LI Li;ZHAO Zuozhou;RUAN Lei(Department of Civil Engineering,Tsinghua University,Beijing 100084,China;Beijing Institute of Residential Building Design&Research Co.,Ltd.,Beijing 100005,China;Beijing Oriental Jingning Building Materials Technology Co.,Ltd.,Beijing 101205,China)

机构地区：[1]清华大学土木工程系,北京100084 [2]北京市住宅建筑设计研究院有限公司,北京100005 [3]北京东方京宁建材科技有限公司,北京101205

出　　处：《建筑结构》2021年第22期61-65,96,共6页Building Structure

摘　　要：以北京亦庄X39地块学校溜冰场大跨度、大荷载楼盖为例,首先介绍此类构件设计的基本内容,包括板的力学模型、预应力筋形式、正截面承载力计算、空心区上翼缘受压高度的局部调整、斜截面承载力计算、板跨中变形计算等;在构件设计基础上,介绍了空心板结构整体设计过程,包括计算模型、预应力效应的考虑、舒适度的计算等;结合本工程的具体特点,在施工中又采取了一些技术优化措施,最后取得了很好的技术经济效果。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.

关 键 词：预应力 空心板 大跨度 大荷载 

分 类 号：TU398.7[建筑科学—结构工程]