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Three-dimensional seismic response analysis of connected structures with damping layers.
Chenghao Xu1, Dewen Liu2,3, Kangjie Ling3
1School of Civil Engineering & Architecture, Wenzhou Polytechnic, Wenzhou, Zhejiang, China.
Plos One
|July 10, 2026
Summary
This study introduces a novel double-sided damping structure using lead-core isolation bearings (LRB) to improve seismic performance in connected structures. The enhanced design significantly boosts energy dissipation and damping effects during earthquakes.
Area of Science:
- Structural Engineering
- Earthquake Engineering
- Materials Science
Background:
- Connected structures face significant challenges during intense seismic activities.
- Existing seismic damping systems require enhancement for high-rise buildings.
- Overturning risk is a critical concern when applying isolation technology to tall structures.
Purpose of the Study:
- To introduce and evaluate a novel control system for connected structures to enhance seismic damping.
- To investigate the effectiveness of a double-sided damping structure utilizing lead-core isolation bearings (LRB).
- To analyze the seismic response and energy dissipation capabilities of different damping configurations.
Main Methods:
- Finite element modeling of single-sided and double-sided damping structures using ABAQUS.
- Comparative analysis of structural models under rare earthquake simulations.
- Evaluation of time-history responses, including layer shear, base reaction force, top-layer acceleration, and interstory drift.
- Energy analysis using shear-drift hysteresis curves to determine energy dissipation rates.
Main Results:
- Both single-sided and double-sided damping structures demonstrated superior energy dissipation and damping effects compared to standard seismic resistance structures.
- The double-sided damping structure exhibited a more pronounced damping effect and a higher energy dissipation rate due to the additional damping layer.
- Strategic placement of damping layers effectively mitigated the risk of overturning caused by excessive bending deformation.
Conclusions:
- The novel double-sided damping structure with LRB significantly enhances seismic damping and energy dissipation in connected structures.
- The design effectively addresses the overturning issue associated with isolation technology in high-rise buildings.
- Further research is required to improve the control effect of these damping structures on vertical earthquakes.
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