混凝土与钢筋连续性对单向简支板跨中区修复的影响

IF 1.1 Q4 MECHANICS

Curved and Layered Structures Pub Date : 2021-12-04 DOI:10.1515/cls-2022-0006

M. J. Kadhim, K. Shadhan, Bilal Ismaeel Abd Al-Zahra

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引用次数: 0

摘要

摘要板的抗弯强度可能由于事故和环境影响而降低。本研究的重点是单向钢筋混凝土板的修复。实验工程包括五块宽度、深度和长度分别为400、120和2200 mm的单向简支钢筋混凝土板。已经测试了新旧混凝土之间钢连续性的不同配置。此外，在对照试件中（钢总体上是连续的，试件和混凝土在一个阶段浇筑在整个板上）。在其他四个试样中，混凝土分两个阶段浇筑，首先浇筑代表旧混凝土的左右部分，然后浇筑代表新混凝土的中间部分。在这四个试件中，新钢通过不同的配置与旧钢连接（原始钢保持连续，新钢与旧钢通过焊接连接，新钢和旧钢通过制作90°弯钩连接，新钢筋使用环氧树脂放入孔内）。经测试，新旧钢材连接的焊接方法是最佳的焊接方法。

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Effect of concrete and reinforcement continuity on repairing mid-span zone in simply supported one-way slab

Abstract The flexural strength of slabs may be reduced due to accidents and environmental effects. This study focuses on the rehabilitation of the one-way reinforced concrete slab. Experimental works include five simply supported one-way reinforced concrete slabs with width, depth, and length of 400, 120, and 2200 mm, respectively. Different configurations of steel continuity between old and new concrete have been tested. Moreover, in the control specimen (steel is continued overall, the specimen and concrete are cast in one stage over the entire slab). In the other four specimens, the concrete is cast in two stages, the left and right parts representing the old concrete are cast first, and the middle part representing a new concrete is cast after that. In these four specimens, new steel is connected to old one by different configuration (original steel remain to continue, new steel connected to old one by weld, new steel connected to old one by making 90° hooks, and new steel bars is put inside bores using epoxy). After testing, the welding method of connecting new to old steel is the best one.

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来源期刊

Curved and Layered Structures MECHANICS-

CiteScore

2.60

自引率

13.30%

发文量

审稿时长

14 weeks

期刊介绍： The aim of Curved and Layered Structures is to become a premier source of knowledge and a worldwide-recognized platform of research and knowledge exchange for scientists of different disciplinary origins and backgrounds (e.g., civil, mechanical, marine, aerospace engineers and architects). The journal publishes research papers from a broad range of topics and approaches including structural mechanics, computational mechanics, engineering structures, architectural design, wind engineering, aerospace engineering, naval engineering, structural stability, structural dynamics, structural stability/reliability, experimental modeling and smart structures. Therefore, the Journal accepts both theoretical and applied contributions in all subfields of structural mechanics as long as they contribute in a broad sense to the core theme.