(1 北京建筑大學土木與交通工程學院， 北京 100044；2 北京電力經濟技術研究院有限公司，北京 100101；3 中國建筑科學研究院有限公司， 北京 100013；4 中冶建筑研究總院有限公司， 北京 100088) 

［摘要］預應力混凝土帶肋疊合板具有良好的受力性能和經濟優勢，是一種常見的裝配式疊合樓板。預應力帶肋疊合底板由于板肋的存在給施工階段管線的布置造成了困難，通過肋部開槽可以解決此問題，但肋部開槽位置的不合理會造成底板的剛度及承載能力不滿足施工階段的受力要求。通過理論分析和試驗驗證對預應力帶肋疊合底板肋部開槽進行抗彎性能研究，給出預應力帶肋疊合底板肋部開槽的合理條件、開槽后撓度計算公式、跨間無支撐施工開槽的設計流程。 

［關鍵詞］預應力；帶肋疊合板；裝配式建筑肋部開槽；抗彎性能；設計方法 

中圖分類號：TU391 文獻標識碼：A文章編號：1002-848X(2021)24-0084-08

Mechanical checking calculation and rationality analysis about slotting in the ribs of prestressed concrete ribbed composite slab

ZHAO  Lei1,2,  ZHAO  Guangjun3,  WANG  Xiaofeng4,  ZHU  Lei1 

(1 School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044，China；2 Beijing Electric Power Economic Technology Research Institute Co., Ltd., Beijing 100101，China；3 China Academy of Building Research, Beijing 100013，China；4 Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088，China) 

Abstract: Prestressed concrete ribbed composite slab is a common prefabricated composite floor with good mechanical properties and economic advantages. However, due to the existence of ribs of prestressed concrete ribbed composite bottom slab, it is difficult to arrange the pipeline in the construction stage. Through opening slots in the ribs, the problem of pipeline layout can be solved well, but the unreasonable position of rib slotting causes the change of the rigidity and bearing capacity of the bottom slab  to fail to meet the mechanical requirements in the construction stage. The bending performance study was conducted on the slotting in the ribs of prestressed concrete ribbed composite bottom slab  through theoretical analysis and experimental verification. Finally, the reasonable conditions of slotting in the ribs of prestressed concrete ribbed composite bottom slab, the theoretical calculation formula of the deflection after slotting, and the design process of slotting in the unsupported construction between spans were provided.  

Keywords:prestress； ribbed composite slab； prefabricated building rib slotting； bending performance； design method 

*國家自然科學基金（5217083413），“十三五”重點研發計劃項目（2016YFC0701600）。

 作者簡介：趙雷，碩士，Email： 732197369@qq.com； 通信作者：王曉鋒，博士，研究員，Email：wxf77@139.com。