High-rise building with hybrid floor sections

The high-rise building design with a reinforced concrete core and integrally formed slabs and beams stabilizes lateral forces during earthquakes, addressing the structural weaknesses of wooden hybrid structures by efficiently transmitting forces to a rigid core, facilitating easier wooden element installation and enhancing living space comfort.

JP2026087333APending Publication Date: 2026-05-27OKUMURA CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
OKUMURA CORP
Filing Date
2024-11-15
Publication Date
2026-05-27

AI Technical Summary

Technical Problem

High-rise buildings with wooden hybrid structures face challenges in stabilizing lateral forces during earthquakes due to the lack of strength in upper wooden floors, which experience increased acceleration and amplitude of lateral shaking, making it difficult to efficiently support these forces.

Method used

A high-rise building design featuring a hybrid floor section with a reinforced concrete core and integrally formed ceiling and floor slabs, incorporating inverted beams and wooden columns, allowing lateral forces to be smoothly transmitted to a highly rigid concrete core, reducing stress on wooden elements and enhancing structural stability.

Benefits of technology

The design provides a stable and efficient support system for lateral forces during earthquakes, enabling easier installation of wooden materials and improving living space comfort by reducing stress on wooden components and allowing greater design freedom for windows and living spaces.

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Abstract

This invention provides a high-rise building that features a hybrid floor section that utilizes ceiling and floor slabs integrally formed within the concrete core to create a more comfortable living space. [Solution] The upper floor 30, which is a hybrid floor section, is formed integrally with the floor slab 52, with a reinforced concrete inverted beam 58 extending along the outer edge of the floor slab 52 on each floor, generally in the longitudinal direction of the building (girder direction) or generally in the transverse direction of the building (beam direction), the inverted beam 58 protruding only upward without protruding towards the lower floor below the floor slab 52, and a portion in which a plurality of wooden columns 53 and / or wooden seismic walls 56 are erected and arranged in the portion between the inverted beam 58 and the ceiling slab above it, and are attached at predetermined intervals in the longitudinal direction or transverse direction.
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Citation Information

Patent Citations

  • Construction method of wooded / RC mixed structure building and wooden / RC mixed structure building

    JP2019100057A

  • Hybrid building and hybrid building design method

    JP2024104599A