纤维混凝土板在土壤上的试验性能

J. A. O. Barros, J. A. Figueiras
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引用次数: 57

摘要

土基平面混凝土板的裂缝控制需要在相邻板间采用荷载传递机制的节点。这些接缝增加了建筑成本,而且往往是局部损坏和服务性能丧失的根源。为了提高承载能力和加强裂缝控制,采用了钢丝网加固板。然而,使用这种常规钢筋增加了成本,主要是由于在钢筋的布置和定位上花费的劳动时间。纤维增强混凝土是一种适合于工业地面地基的新型材料。更快的施工过程和减少伸缩缝的数量弥补了纤维的成本。加入钢纤维后,混凝土的抗疲劳强度、抗冲击强度和抗弯强度均有显著提高。所开展的工作旨在为正在进行的研究工作做出贡献,以澄清纤维增强混凝土板在土壤基础上的行为。为此,进行了实验和数值研究。本文主要论述了所开展的实验工作,描述了所进行的试验,并讨论了所获得的主要结果。©1998 John Wiley &儿子,有限公司
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental behaviour of fibre concrete slabs on soil

The cracking control of plain concrete slabs on soil foundation requires the execution of joints with mechanisms of load transfer between adjacent panels. These joints increase the construction costs and, often, are the source of local damage and loss of service performance. Slabs reinforced with steel wire mesh have been used in order to increase the load-carrying capacity and to enhance the cracking control. However, the use of this conventional reinforcement increases the costs, mainly due to labour time spent on the arrangement and positioning of the reinforcement.

Fibre-reinforced concrete is a recent material well fitted for applications in industrial floors on soil foundation. The cost of fibres is compensated by a faster construction process and a reduction in the number of expansion joints. The fatigue, impact and flexural strength are significantly improved when steel fibres are added to the concrete mix.

The work developed aims to contribute to the on going research effort to clarify the behaviour of fibre-reinforced concrete slabs on soil foundation. For this purpose, an experimental and numerical investigation were carried out. The present article deals basically with the experimental work developed, describing the tests performed and discussing the main results obtained. © 1998 John Wiley & Sons, Ltd.

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