Study on lateral buckling behavior of steel beam with concrete slab

Study on lateral buckling behavior of steel beam with concrete slab

Building use

Office building

Country/Region

Japan

Overview

A method to rationalize the arrangement of lateral bracing members based on the effect of the floor slab has been developed. The purpose of this is as follows:
1) Improvement of structural stability: The development of a rationalized arrangement and design of lateral bracing members is intended to enhance the stability of the building.
2) Cost reduction: The conventional arrangement of lateral bracing members can be costly in terms of materials and construction processes. The purpose is to achieve cost reduction while ensuring sufficient lateral bracing stiffness through the development of a rationalized method.

Basic information (construction date, number of stories, gross floor area, adopted design code, engineer(s), Contractor(s), etc.)

Construction date: 2020
Number of stories: 28
Gross floor area: 121,711m2
Adopted design code: Japan Building Standard act
Engineer(s): KAJIMA DESIGN
Contractor(s): Kajima Corp.

Issue and/or innovation

Technical challenges include establishing appropriate design and analysis methods, as well as verifying numerical simulation and experimental results.

Technical details

Structural experiments and FE analyses to establish a design method were conducted. In the experimental study, a full-sized specimen of a beam with a floor slab was prepared to verify the lateral stiffening effect of the floor slab. In addition, FE analyses were performed to simulate the test results.

Specific solution/technical details

Construction rationalization to skip transverse stiffener.

Impact or effectiveness

Project cost reduction.

References / Technical Papers Content

Kiyokawa, T. , Sawamoto, Y. , Okayasu, T. and Sano, K. “Study on Lateral Buckling Behavior of Steel Beam with Concrete Slab, Part-1 Experimental Results, Part-2 FE analysis”, Summaries of technical papers of annual meeting (Transaction of AIJ) , pp.1035-1038, 2017 (in Japanese)