Structure of column-beam joint portion and design method of column-beam joint portion

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The column-beam joint structure with a doubler plate reinforcement addresses strength and economy issues, enhancing structural performance and workability by integrating a doubler plate and cover plate design in RCS structures.

JP2025117640AActive Publication Date: 2025-08-13JFE CIVIL ENG & CONSTR

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Patent Information

Application Number: JP2024012474
Authority / Receiving Office: JP · JP
Patent Type: Applications
Current Assignee / Owner
Filing Date: 2024-01-31
Publication Date: 2025-08-13
Estimated Expiration: 2044-01-31

Application Information

Patent Timeline

31 Jan 2024

Application

JP2024012474

13 Aug 2025

Publication

JP2025117640A

IPC: E04B1/30; E04B1/58

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Application Domain

Building constructions

Technology Topics

Reinforced concrete column Classical mechanics

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AI Technical Summary

Technical Problem

Existing column-beam joints in RCS structures face challenges in increasing strength without compromising workability, structural performance, and economy, particularly due to issues with cover plate thickness, concrete strength variations, and increased steel beam costs.

Method used

A column-beam joint structure where the steel beam penetrates through a reinforced concrete column, reinforced with a doubler plate, and surrounded by a cover plate, with specific dimensions and material strengths to enhance shear strength.

Benefits of technology

The solution provides a strong, economical, and easily constructible column-beam joint with improved concrete filling and structural performance, avoiding the need for high-precision processing and reducing steel beam thickness requirements.

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Abstract

To provide structure of a column-beam joint portion between reinforced concrete columns and steel beams and a design method for the column-beam joint portion that enhance strength of the column-beam joint portion with a relatively simple configuration, to offer superior economic efficiency, constructability, and structural performance in the column-beam joint portions.SOLUTION: In structure of a column-beam joint portion between a reinforced concrete column and steel beams, an end portion of the steel beam penetrates from one side surface of the reinforced concrete column to the opposite side surface, and a portion of a web of the steel beam that penetrates into the reinforced concrete column is reinforced by a doubler plate.SELECTED DRAWING: Figure 3

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