Computational and Experimental Mechanical Modelling of a Composite Grouted Splice Sleeve Connector System

Materials

Guanyu Zheng¹  Zhiping Kuang¹ 

[1] Department of Building Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;

关键词: composite;    connection;    grouted splice sleeve;    finite element;    material nonlinearity;   

DOI  :  10.3390/ma11020306

来源: DOAJ

【 摘 要 】

Owing to its controllable tolerance, simple operation and no need for welding at construction site, the composite system involving grouted cement material, steel material and ductile iron material is widely used as grouted splice sleeve (GSS) connector for connecting precast concrete structures. However, the current design recommendations for such a composite connection system do not accurately account for its material nonlinearity behavior. In the present study, a three-dimensional nonlinear finite element model of a GSS connector is developed by considering the nonlinear material behavior of each component to fully investigate its mechanical performance under axial tension. To validate the proposed computational model and demonstrate the nonlinear response of the GSS connector, the pullout experimental test of two engineering specimens is carried out under monotonic tensile load, and a good agreement between the numerical and experimental test results is observed. Then, the sensitivity analysis of some controlling material properties and geometrical parameters is performed using the validated computational model to further understand the performance of such a composite structure in load carrying capacity and ductility of the connections to meet the rapid engineering applications of precast concrete structures.

【 授权许可】

Unknown