文献类型：期刊文献

英文题名：Response of combined formwork construction with precast concrete laminated slab and steel truss to flexural loading

作者：Liang, Tao Feng, Mei Wei, Yanhui Zhang, Hanming Chen, Jing

第一作者：Liang, Tao

通信作者：Chen, J[1];Chen, J[2]

机构：[1]Guizhou Univ, Inst Engn Invest & Design, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Guiyang 550003, Peoples R China;[3]Guizhou Univ, Res Ctr Space Struct, Guiyang 550025, Peoples R China;[4]Key Lab Green Bldg & Intelligent Construct Guizhou, Guiyang 550025, Peoples R China

第一机构：Guizhou Univ, Inst Engn Invest & Design, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Univ, Res Ctr Space Struct, Guiyang 550025, Peoples R China;corresponding author), Key Lab Green Bldg & Intelligent Construct Guizhou, Guiyang 550025, Peoples R China.

年份：2026

卷号：23

期号：2

外文期刊名：LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES

收录：;EI(收录号：20260920164398);WOS:【SCI-EXPANDED(收录号:WOS:001699190000001)】；

基金：This research is supported by Guizhou University Survey and Design Foundation [Grant No. 202204]; Guizhou Science and Technology Achievement Transformation Foundation [Grant No QKH2023081]; Foundation of Guizhou University GZUF202034; Guizhou University Survey and Design Foundation [Grant No. 202206]; Guizhou Provincial Science and Technology Program Project (Qian Kehe Platform ZSYS [2025] 009) .

语种：英文

外文关键词：Precast composite slab; Steel truss; Demountable joint; Static bending test; Finite element analysis; Parametric study; Simplified design method

摘要：This paper presents a precast concrete composite slab-steel truss formwork system incorporating demountable joints to achieve composite behavior between the upper slab and the lower truss, thereby facilitating truss reuse. The system enables shoring-free construction for medium to long spans(3.0m<^>6.0m), enhancing construction efficiency and reducing material consumption. To assess its performance under realistic conditions, three full-scale specimens were subjected to vertical static bending tests involving a loading-unloading procedure. A finite-element model was developed and calibrated against experimental results, followed by a parametric analysis. The system demonstrated excellent flexural performance with minimal residual deformations after unloading, indicating high recoverability and reliable reusability. Parametric studies reveal that increasing slab thickness primarily enhances the slab's behavior with negligible influence on the global structural response, whereas truss height and member cross-sections predominantly govern overall stiffness and load-bearing capacity. Based on experimental and numerical findings, simplified design equations for strength and deflection are proposed to support design optimization and practical implementation.