Calculating the Semi-Enclosed Core Structure with Post-Elastic Behavior Considering Diagonal Reinforcement in Coupling Beams

EasyChair Preprint 13290

Abstract

The structural configuration of diagonal steel reinforcement to enhance shear resistance and flexibility for coupling beams has been well-established in numerous studies by Paulay and other researchers worldwide. When integrated into the load-resisting system of a semi-enclosed core structure, this configuration theoretically enhances the torsional resistance of the core compared to cases where coupling beams are conventionally designed or designed with limited load-bearing capacity. However, the specific role of diagonal steel reinforcement in coupling beams regarding the torsional resistance of the semi-enclosed core needs to be evaluated through core performance parameters such as torsional moment capacity and reduction in core twist angle. This paper employs the finite element method, incrementally increasing lateral loads, utilizing coupling beam models incorporating diagonal reinforcement and shell models for wall panels to analyze a typical core structure scenario with various coupling beam configurations incorporating different ratios of diagonal reinforcement. The analysis results clarify the influence of diagonal reinforcement in coupling beams on enhancing the torsional stiffness of reinforced concrete semi-enclosed cores in multi-storey buildings.

Keyphrases: Dầm nối đặt cốt thép chéo, Khả năng chịu xoắn, Lõi nửa kín, Mô hình dầm - giàn, Nhà nhiều tầng

@booklet{EasyChair:13290,
  author    = {Xuân Quý Đoàn and Tiến Chương Nguyễn},
  title     = {Calculating the Semi-Enclosed Core Structure with Post-Elastic Behavior Considering Diagonal Reinforcement in Coupling Beams},
  howpublished = {EasyChair Preprint 13290},
  year      = {EasyChair, 2024}}