Related Experiment Video
Updated: Sep 15, 2025
09:32
Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
Published on: April 11, 2018
9.8K
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.
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.
Related Concept Videos
01:19Plastic Deformations
188
Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
188
01:20Plastic Deformation in Circular Shafts
234
When materials are subjected to forces that surpass their yield strength, they undergo a process known as plastic deformation. This results in a permanent alteration or strain in their structure. This concept can be specifically applied to circular shafts, where the deformation leads to a change in its shape. The precise evaluation of this plastic deformation requires understanding the stress distribution within the circular shaft, which is achieved by calculating the maximum shearing stress in...
234
01:28Design Example: Joints in Concrete Pavements
268
Concrete pavement joints are essential for maintaining the structural integrity and longevity of pavement by controlling where and how the pavement cracks. These joints can be categorized based on their functions, such as contraction or control joints, construction joints, isolation joints, and expansion joints.
Contraction joints are typically formed by sawing a groove into the concrete shortly after it has hardened. This creates a weakened vertical plane, deliberately encouraging cracking at...
Contraction joints are typically formed by sawing a groove into the concrete shortly after it has hardened. This creates a weakened vertical plane, deliberately encouraging cracking at...
268
01:21Plastic Deformations of Members with a Single Plane of Symmetry
127
When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
127
01:30Method of Joints: Problem Solving II
679
Consider a truss structure with frictionless joints fixed to a wall and roller support. If a force of 150 N is applied to joint A, the forces in each member of the truss can be determined using the method of joints.
679
01:14Design Example: Managing Concrete Workability
122
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
122