Rotational Stiffness of Precast Beam-Column Connection using Finite Element Method

4th International Conference on Civil and Environmental Engineering for Sustainability

地球科学;生态环境科学;经济学

Hashim, N.^1 ; Agarwal, J.^2

UTM Razak School Engineering and Advanced Technology, Universiti Teknologi Malaysia, Malaysia^1

Department of Civil Engineering, University of Bristol, United Kingdom^2

关键词: Actual connections;    Beam;    column connection;    Design practice;    Mathematical equations;    Moment-rotation relationship;    Rigid connection;    Rotational stiffness;    Semirigid connections;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/140/1/012128/pdf
DOI  :  10.1088/1755-1315/140/1/012128

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Current design practice in structural analysis is to assume the connection as pinned or rigid, however this cannot be relied upon for safety against collapse because during services the actual connection reacts differently where the connection has rotated in relevance. This situation may lead to different reactions and consequently affect design results and other frame responses. In precast concrete structures, connections play an important part in ensuring the safety of the whole structure. Thus, investigates on the actual connection behavior by construct the moment-rotation relationship is significant. Finite element (FE) method is chosen for modeling a 3-dimensional beam-column connection. The model is built in symmetry to reduce analysis time. Results demonstrate that precast billet connection is categorized as semi-rigid connection with Siniof 23,138kNm/rad. This is definitely different from the assumption of pinned or rigid connection used in design practice. Validation were made by comparing with mathematical equation and small differences were achieved that led to the conclusion where precast billet connection using FE method is acceptable.