A self-resetting aseismatic infilled wall frame structure based on topological interlocking

By employing topological interlocking structures and unbonded prestressed tendons in prefabricated concrete frame structures, combined with energy-dissipating steel bars and topological interlocking blocks, the seismic performance and self-centering issues of prefabricated frame structures were solved, achieving frictional energy dissipation and self-centering functions, and improving construction efficiency and shear resistance.

CN117661754BActive Publication Date: 2026-06-19HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Filing Date
2023-05-12
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The beam-column joints of existing prefabricated concrete frame structures have poor seismic performance, are difficult to dissipate seismic energy, and lack self-resetting function, making the joints prone to damage, complex to construct, and inconsistent with the convenient and environmentally friendly concept of prefabricated buildings.

Method used

A topological interlocking structure is used as the assembly connection surface. An integral frame structure is formed by using unbonded prestressed tendons and energy-dissipating steel bars. Combined with topological interlocking blocks, friction energy dissipation and self-resetting functions are realized, avoiding grouting and cast-in-place fixing.

Benefits of technology

It improves the seismic performance and self-centering ability of the frame structure, reduces construction complexity, meets the high efficiency and environmental protection requirements of prefabricated buildings, reduces the dependence on alignment accuracy and mortar use, and enhances the shear resistance of components and construction efficiency.

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Abstract

A self-resetting seismic-resistant infill wall frame structure based on topological interlocking utilizes topologically interlocking curved surfaces as the assembly connection surfaces of the prefabricated frame structure. Instead of using grouting and cast-in-place bonding, the assembly connection surfaces employ a direct, non-adhesive bonding method. The two assembled topologically interlocking curved surfaces have an interlocking function, allowing for a certain degree of minor displacement under external forces and achieving frictional energy dissipation, significantly reducing stress and thus greatly minimizing structural damage caused by earthquakes or external forces. The topologically interlocking surfaces restrict the mutual displacement of components at the connection interface, improving the shear resistance of the prefabricated building components after installation. Furthermore, under the action of the topologically interlocking surfaces, it possesses excellent self-resetting function, automatically resetting after an earthquake.
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