(1 安徽省建筑设计研究总院股份有限公司， 合肥 230002；2 合肥工业大学土木与水利工程学院，合肥 230009；3 安徽晶宫绿建集团有限公司， 阜阳 236000)

摘要: 钢管桁架预应力混凝土叠合板是一种新型的叠合板，为了便于推广使用，介绍了一种设计方法。 在施工阶段，叠合板是由钢管桁架和混凝土底板构成的预制底板，按单向板进行设计。 在使用阶段，叠合板预应力方向与垂直预应力方向的刚度存在显著差异，针对这种正交异性，提出了简化的设计方法。 预应力方向按单向板进行设计，垂直于预应力方向按普通现浇混凝土双向板进行设计。 详细介绍了叠合板施工阶段和使用阶段计算单元与截面的选取、荷载选取与组合、内力值及预应力的计算、主要的验算内容以及连接构造。 最后给出了具体算例，通过理论计算对叠合板施工浇筑阶段和使用阶段进行设计和验算，并采用有限元模拟验算施工脱模阶段。 该设计方法趋于保守，但思路明确，便于设计使用。

关键词: 预应力混凝土；灌浆钢管；组合截面；叠合板；正交异性板

中图分类号:TU398+. 1 文献标志码:A 文章编号:1002￣848X(2022)01￣0109￣06

DOI:10. 19701 / j. jzjg. 20210044

Design method for prestressed concrete laminated slab with grouted steel￣tube trusses

WU Yang1， SONG Lei1， ZHU Zhaoqing1， CHONG Xun2， FANG Yicheng1， SHAO Ye3

(1 Anhui Provincial Architectural Design and Research Institute Co.， Ltd.， Hefei 230002， China；2 School of Civil and Hydraulic Engineering， Hefei University of Technology， Hefei 230009， China；3 Anhui Jinggong Lüjian Group Co.， Ltd.， Fuyang 236000， China)

Abstract: Prestressed concrete laminated slab with grouted steel￣tube trusses is a new type of laminated slab. In order topopularize， a design method was introduced. In the construction stage， the laminated plate was a prefabricated bottomplate composed of steel pipe truss and concrete bottom plate， which was designed as a one￣way plate. In the use stage，there was a significant difference in stiffness between the prestressed direction and the vertical prestressed direction of thelaminated plate，and in view of this orthogonality， a simplified design method was proposed. The laminated plate wasdesigned as one￣way slab in the prestressed direction and as ordinary cast￣in￣place concrete two￣way slab slab in thevertical prestressed direction. Then selection of calculation unit and section， load selection and combination， calculationof internal force and prestress， main checking contents and connection structure in the construction stage and use stagewere introduced in detail. Finally， a specific example had been given. Through theoretical calculation， the constructioncast￣in￣place stage and use stage of laminated slab were designed and checked， and finite element simulation was used tocheck the demoulding stage of construction. The design method tends to be conservative， but the idea is clear and easy todesign.

Keywords:prestressed concrete；grouted steel tube；composite section；laminated slab；orthotropic slab

第一作者:吴杨，硕士，高级工程师，一级注册结构工程师，注册咨询工程师，主要从事装配式设计研究，Email: 270466016@ qq.com。

[引用本文] 吴杨，宋磊，朱兆晴，等. 钢管桁架预应力混凝土叠合板设计方法[ J]. 建筑结构，2022，52( 1):109￣114，126. WU Yang，SONG Lei，ZHU Zhaoqing，et al. Design method for prestressed concrete laminated slab withgrouted steel￣tube trusses[J]. Building Structure，2022，52(1):109￣114，126.