Evaluation of Load-Transfer Efficiency of Steel Mesh Reinforced Contraction Joints in Concrete Pavement: Accelerated Pavement Test and FE Analysis

IF 0.8 4区工程技术 Q4 ENGINEERING, CIVIL

Teknik Dergi Pub Date : 2021-11-01 DOI:10.18400/tekderg.643027

Muhammet Çelik, Mehmet Tevfik Seferoğlu, M. Akpınar, M. Nasery, Ayşegül Güneş Seferoğlu

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Abstract

Transverse contraction joints are by far the most common type of joint in jointed plain concrete pavements. Early loading of contraction joints can create a weakened vertical plane and later grow as a full-depth crack. In this study, load transfer efficiency (LTE) of steel mesh reinforced transverse contraction joints were studied at accelerated pavement tests (APT). 3D finite element (FE) model of jointed plain concrete pavement (JPCP) was developed to study deflections and crack propagation in just under the joint of the concrete pavement. The APT tests were focused on the LTE values before and after the crack initiation under the contraction joint region. Experiments were performed on three slabs in which two of these slabs were prepared without reinforcement and one of them was reinforced with steel mesh. Data generated by APT was used for verification of crack propagation modeling in the finite element analysis. Steel mesh reinforced slab gave the lowest vertical deflections (51μm) and highest LTE (91.56%). The LTE value in the reinforced slab after 25,000 passes was 13.63% higher than the average of unreinforced slabs. The findings suggest that the load transfer efficiency was found to be a complex parameter and should be interpreted together with average displacement values when contraction joints are evaluated at early traffic loadings.

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钢筋网收缩缝在混凝土路面中的荷载传递效率评估：加速路面试验和有限元分析

横向收缩缝是迄今为止在平面混凝土路面中最常见的接缝类型。收缩缝的早期加载会产生一个弱垂面，后期会发展为全深度裂缝。本文研究了钢网加筋横向伸缩缝在加速路面试验中的荷载传递效率。建立了平面节理混凝土路面的三维有限元模型，研究了混凝土路面节理正下方的挠度和裂缝扩展。APT试验主要研究收缩节理区域裂纹萌生前后的LTE值。试验采用3块板，其中2块板不加筋，1块板加钢网加固。利用APT生成的数据对有限元分析中的裂纹扩展模型进行验证。钢网加筋板竖向挠度最小(51μm)， LTE最高(91.56%)。加筋板25000道次后的LTE值比未加筋板的平均值高13.63%。研究结果表明，荷载传递效率是一个复杂的参数，在评估早期交通荷载时，应与平均位移值一起进行解释。

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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来源期刊

Teknik Dergi 工程技术-工程：土木

自引率

30.80%

发文量

审稿时长

>12 weeks

期刊介绍： The scope of Teknik Dergi is naturally confined with the subjects falling in the area of civil engineering. However, the area of civil engineering has recently been significantly enlarged, even the definition of civil engineering has somewhat changed. Half a century ago, engineering was simply defined as “the art of using and converting the natural resources for the benefit of the mankind”. Today, the same objective is expected to be realised (i) by complying with the desire and expectations of the people concerned and (ii) without wasting the resources and within the sustainability principles. This change has required an interaction between engineering and social and administrative sciences. Some subjects at the borderline between civil engineering and social and administrative sciences have consequently been included in the area of civil engineering. Teknik Dergi defines its scope in line with this understanding. However, it requires the papers falling in the borderline to have a significant component of civil engineering.