冷节点对钢筋混凝土梁抗弯强度的影响

IF 3 Q2 ENGINEERING, CIVIL

Journal of Structural Integrity and Maintenance Pub Date : 2021-01-02 DOI:10.1080/24705314.2020.1823556

J. Vanlalruata, C. Marthong

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引用次数: 3

摘要

摘要：本研究的目的是确定在两种条件下：（i）不同的混凝土配合比和（ii）不同的冷接缝龄期，由于冷接缝的存在，钢筋混凝土（RC）梁的抗弯强度承载力损失。采用印度标准方法测试钢筋混凝土梁的抗弯强度。在本研究中，浇筑了40根梁，其中8根为受控梁，其余32根为冷连接试件。通过以大约45°的角度倾斜来铸造多达一半的冷连接试样，以复制现场的常见做法，其余部分以不同的时间间隔铸造。通过试验研究，观察了不同龄期冷接头的存在对RC梁抗弯承载力的损失量。提出了一个扣除表来说明由于冷接头的存在而造成的损失。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effect of cold joint on the flexural strength of RC beam

ABSTRACT The aim of the present study is to determine the loss in the flexural strength capacity of a reinforced concrete (RC) beam due to the presence of cold joint under two conditions: (i) different mix of concrete and (ii) different age of the cold joint. Indian Standard method of testing the flexural strength of an RC beam was adopted. In this study 40 beams were casted out of which 8 were of controlled beams and the remaining 32 were of cold jointed specimens. Cold jointed specimens were casted up to half by inclining approximately at 45° to replicate the common practice on site and the remaining portions were casted at different intervals of time. From the experimental study, the amount of loss in the flexural strength capacity of the RC beams due to the presence of cold joint for different age was observed. A deduction chart to account for the loss due to the presence of cold joint is proposed.

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来源期刊

Journal of Structural Integrity and Maintenance ENGINEERING, CIVIL-

CiteScore

3.90

自引率

9.50%

发文量