ORIGINAL RESEARCH article
Front. Mater.
Sec. Structural Materials
Volume 12 - 2025 | doi: 10.3389/fmats.2025.1626613
This article is part of the Research TopicAdvancing Eco-Friendly Construction: The Role of Biomass and Waste IntegrationView all articles
Study on mechanical properties of concrete steel support materials in underground construction engineering
Provisionally accepted
- China Construction Eighth Bureau Engineering Research Institute, China Construction Eighth Engineering Division (China), pudong, China
Select one of your emails
You have multiple emails registered with Frontiers:
Notify me on publication
Please enter your email address:
If you already have an account, please login
You don't have a Frontiers account ? You can register here
A large number of concrete support materials are often required for the stability of foundation pit engineering. In order to achieve the green and low-carbon goal of building construction, steel support materials have been used instead, but the joint weakening problem often occurs in the use of steel. In this paper, the mechanical test of the influence of different thickness cover plates on the connection joints of concrete steel support weak axis and strong axis direction will be carried out. The results show that the displacement of the upper and lower supporting of H-shaped steel supporting with different cover plate thicknesses increases linearly with the increase of load in the weak axis and strong axis directions, and the displacement change of the upper supporting is always greater than that of the lower supporting.When the H-shaped steel supporting is in the weak axis and the strong axis direction, the rotational stiffness of the lower supporting is always greater than that of the upper supporting. The strain of the strain gauge in the middle of the H-shaped steel support and the cover plate increases linearly with the increase of load, and the strain of the four corners of the cover plate is very small. The failure load of the weak axis direction specimen is 486.8 kN, and the failure load of the strong axis direction specimen is 704.8 kN. This study will provide theoretical and technical guidance for the design of concrete steel support system in building construction.
Keywords: Concrete steel support material, Connection joint, Cover plate, Mechanical Properties, Failure characteristics
Received: 11 May 2025; Accepted: 02 Jun 2025.
Copyright: © 2025 Min, Yonggang, Jianqiu and qingyun. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Zhang Yonggang, China Construction Eighth Bureau Engineering Research Institute, China Construction Eighth Engineering Division (China), pudong, China
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.