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Designing columns to withstand eccentric loads is a critical aspect of structural engineering, ensuring structures can support off-center loads without failure. This design process must account for the additional normal stresses introduced by eccentric loading, which can significantly influence a column's stress distribution and overall stability. An eccentric load applied to a column induces normal stresses that can be conceptualized as a combination of stresses due to an equivalent...
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Updated: Jun 30, 2025

Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels
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Structural performance of detachable precast concrete column-column joint.

H Zhan1, M Ye1, J Jiang2

  • 1Research Centre of Wind Engineering and Engineering Vibration, Guangzhou University, Guangzhou, 510006, China.

Heliyon
|March 18, 2024
PubMed
Summary

This study introduces a novel detachable precast concrete (DPC) joint for improved column-column connections. Optimized axial pressure enhances seismic performance, offering easier disassembly and clearer structural behavior.

Keywords:
Hysteresis curvePrecast concrete column-column jointsSeismic performanceSkeleton curve

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Area of Science:

  • Structural Engineering
  • Civil Engineering
  • Materials Science

Background:

  • Current dry column-column connections exhibit complex load paths, uncertain stiffness, and disassembly challenges.
  • Novel detachable precast concrete (DPC) joints offer a potential solution to these issues.

Purpose of the Study:

  • To propose and analyze a novel detachable precast concrete (DPC) joint for column-column dry connections.
  • To investigate the structural performance and seismic behavior of DPC joints using finite element analysis.

Main Methods:

  • Development of finite element models for DPC joints.
  • Validation of models against experimental test data.
  • Parametric study on the effects of axial pressure ratio and eccentricity.

Main Results:

  • The optimal axial pressure ratio for DPC joints ranges from 0.5 to 0.7.
  • Increasing axial pressure generally decreases the ductility coefficient.
  • Eccentricity has a minimal impact on the energy dissipation capacity of DPC joints.

Conclusions:

  • The proposed DPC joint offers a viable solution for column-column dry connections, addressing current limitations.
  • Axial pressure is a critical parameter influencing the seismic performance and ductility of DPC joints.
  • The DPC joint design demonstrates potential for enhanced structural integrity and ease of disassembly.