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Related Experiment Video

Updated: Sep 15, 2025

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

Plasticity-based design and static performance of UT-type joint for construction error adaptation.

Sun Menghan¹, He Luyao¹, Jiang Xin¹

¹Harbin Engineering University, Harbin, Heilongjiang, China.

Scientific Reports

|July 12, 2025

Summary

A novel UT-type joint for prefabricated rectangular hollow section (RHS) beam-column connections addresses construction errors. While slightly reducing bearing capacity, it offers superior plastic control and error adjustment, enhancing structural safety.

Keywords:

Beam-column joint Finite element simulation Plasticity-controllable design Prefabricated structure Static loading

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Area of Science:

Structural Engineering
Mechanical Engineering
Civil Engineering

Background:

Prefabricated rectangular hollow section (RHS) beam-column joints face challenges in development and construction accuracy.
Existing joint designs often lack effective solutions for construction errors and precise plastic energy dissipation.

Purpose of the Study:

To introduce and evaluate a new UT-type prefabricated joint for RHS beam-column connections.
To address construction errors and enhance plastic controllability in beam-column joints.
To develop a simplified design method for the novel UT-type joint.

Main Methods:

Design and implementation of a novel beam-column loading test device for static performance evaluation.
Finite element (FE) simulation to compare UT-type joints with traditional RHS joints.
Development of a simplified design method based on specifications and FE simulation results.

Main Results:

The UT-type joint shows a slight decrease in static bearing capacity (up to 15.4%) compared to traditional RHS joints.
UT-type joints demonstrate improved plastic controllability and reduced axial force sensitivity.
The joint design allows for construction error adjustment of ±5 mm via sleeve modification.

Conclusions:

The UT-type joint effectively resolves construction error issues in prefabricated RHS beam-column connections.
Despite a minor reduction in bearing capacity, the enhanced plastic performance and adaptability offer significant advantages.
The UT-type joint presents a promising solution for practical applications in structural engineering.