用深度嵌入式方法加固的非耦合混凝土梁上的剪接元件

Ridho Ardiansyah, Enno Yuniarto, Ridwan
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引用次数: 0

摘要

梁是建筑物结构的刚性部分。这种梁是专门设计的,能够承受并将载荷传递给柱。没有抗剪加固的梁在强度和破坏模式方面都会发生变化。现有钢筋混凝土结构的抗剪承载力往往不能满足现有要求。这种强度的降低可能是由于载荷的增加、初始设计中的强剪切不足以及自然因素造成的材料损坏造成的。已有的方法主要有外粘接法(EB)和近表面贴装法(NSM)。然而,使用EB和NSM方法的抗剪性很容易导致结构破坏,因为这种方法只包含环氧附着物及其涂层。为了克服这一问题,提出了采用深埋法的阻力法来加固既有钢筋浓缩结构的抗剪能力。本研究的目的是通过有限元建模,分析采用DE法加固的钢筋混凝土梁的抗剪性能。在本研究中,现有钢筋浓缩结构通过植入三种钢体进行加固,每种钢体200 mm的间隙分布在剪力梁上。对DE法加固的钢筋混凝土梁进行有限元分析得到的最大荷载为29.09 kN。而有限元分析得到的最大挠度结果为10.1 mm。有限元分析结果表明,加固后的梁发生的破坏模式为剪切破坏。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pemodelan Elemen Hingga Terhadap Pembebanan Geser Pada Balok Beton Bertulang Tanpa Sengkang yang Diperkuat dengan Metode Deep Embedment
Beams are a rigid part of the structure of a building. This beam is specifically designed to be able to withstand and transfer loads to column. Beams without shear reinforcement will experience changes in behavior both in terms of strength and failure patterns.The shear capacity of existing reinforced concrete structures is often unable to meet existing requirements.This decrease in strength can be caused by increased load, strong shear that is inadequate in initial design and material damage due to natural factors. Many methods that have been done are by means of external bonded (EB) method and near-surface mounted (NSM) method. However, shear resistance using the EB and NSM methods is prone to structural failures due to the magnification of this method only to contain an epoxy attachment and its blanket. To overcome this problem the resistance method using deep embedment (DE) method have been proposed to reinforcement the shear capacity of existing reinforced concentrate structures.The purpose of this study was to analyze the shear behavior of reinforced concrete beams without shear reinforcement strenghtned by the DE method through finite element modeling.In this research, the existing reinforced concentrate structures put up the reinforcement by implant three kinds of steel carcass with 200 mm each gaps spread out shear beam. The maximum load result obtained from finite element analysis on reinforced concrete beams reinforced by the DE method was 29.09 kN. While the maximum deflection results obtained in finite element analysis was 10.1 mm. The failure model that occurs in the beam which is strengthened from the results of finite element analysis is the shear collapse.
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