Study on mechanical properties of prefabricated non-removable thermal insulation bottom formwork steel reinforcement cage floor deck
TANG Li'na
ZHANG Yiping
LI Xuancen
ZHOU Lian
LI Li
Abstract：A prefabricated non-removable thermal-insulated bottom formwork steel reinforcement cage floor deck was prepared by using thermal-insulated non-removable bottom formwork and steel reinforcement cage connected via fasteners.Finite element analysis was conducted on its stress performance during the hoisting,construction,and service stages.Experimental research was conducted on the stress performance during the construction stage,and its insulation performance was tested and calculated.Results show that the bearing capacity,deformation,and cracks of the floor bearing plate during the hoisting,construction,and service stages all meet the requirements specified in codes such as Technical Specification for Application of Steel Truss Floor Bearing Plates(T/CECS 1069-2022).The non-removable thermal-insulated bottom formwork exhibits excellent thermal insulation performance,and the number of supports required during the construction stage is significantly reduced.The prefabricated floor deck designed in this study can realize the integration of thermal insulation and formwork,eliminate the on-site processes of steel mesh binding and ther-mal insulation layer construction,and thus greatly improve construction efficiency.
Keywords：prefabricated floor decknon-removable bottom formworkmechanical propertiesfinite element analysisexperimen-tal study
Publication Date：2025-11-25
Online Publishing Date：2025-12-15(First online date of this platform, not the publication date of the document)
Pages：7( 11-17 )