Method ot the restoring and reinforcement of damaged bending reinforced concrete elements under cyclic loading
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2018, Vol 1, Issue 72
Abstract
In all the variety of external and internal influences, cyclic loading is often encountered with hardly noticeable external but the large internal changes, as a result of which the building structures receive a significant increasing of deformations, a noticeable decreasing of fatigue strength and crack resistance, that accompanied by premature failure. In the published literature available to the authors, the reinforcement methods for solving problems, that associated only with the intermittent cyclic load action in one plane were found. In this paper, we consider a new method of the restoring and reinforcement of damaged bending reinforced concrete elements under low-cycle high-level reversed cyclic loading, using the prestressed metal clips. The operations, the order and conditions of their performance, the devices used in these operations are defined. The variants of connection and the creation of prestressing in reinforcement elements are proposed. The essence of this reinforcement method is the installation of longitudinal and transverse metal reinforcement elements on the damaged reinforced concrete bending element, forming the clip, with the following creation of prestressing in these reinforcement elements. As a result of the prestressing, a triaxial compression of reinforced element is created, the result of which is the restoration of monolithic and the reinforcement of bending reinforced concrete element, that damaged with normal cross-cutting and cross inclined cracks. Due to the simplicity of prestressed metal clip manufacturing and its inclusion to the work immediately after manufacture, the ability to regulate the complex stress-strain state of reinforced structure during its exploitation and to change, if it is necessary, the static working scheme, especially under alternating cyclic loading, the proposed method of restoring and reinforcement of damaged reinforced concrete structures experiencing the complex types of deformations, is indispensable.
Authors and Affiliations
V. M. , Karpiuk, D. S. Danilenko, Yu. A. Somina
Keywords
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