使用钢支撑构件降低钢筋混凝土建筑的地震易损性

IF 0.1 Q4 ENGINEERING, CIVIL Romanian Journal of Transport Infrastructure Pub Date : 2019-07-01 DOI:10.2478/rjti-2019-0005
Naima Ezzaki, D. Stoica, Laurentiu Rece, Arina Modrea
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引用次数: 0

摘要

本文旨在通过对比研究,强调钢支撑系统用于降低既有钢筋混凝土结构(钢筋混凝土框架和钢筋混凝土双结构,包括交通基础设施在内的一般建筑结构)的地震易损性的效率。为了简化计算,将分析简化为研究相同平面分布的四层、九层和十五层建筑对应的阻力线的行为。为了获得与现有建筑元素相似的特征,结构最初加载了对应于规范P13-63的地震力。下一步是根据p100 - 3:20 08与p100 - 1:20 13的关系,对先前尺寸的结构应用地震荷载,从而获得现有结构与这些规范要求的不足之处。通过引入x形中心支撑系统,试图纠正这些强度和刚度缺陷。作为加固方法的支撑体系有三种类型:粘贴在钢筋混凝土框架中的直接支撑和由内外支撑钢框架组成的间接支撑。利用ETABS程序进行了线弹性场的结构计算。
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Reducing the Seismic Vulnerability for RC Buildings by Using Steel Bracing Elements
Abstract This article aims to highlight, through a comparative study, the efficiency of steel bracing systems used to reduce seismic vulnerabilities in existing buildings with reinforced concrete structures (reinforced concrete frames and reinforced concrete dual structures, general building structures including those used in transport infrastructure). In order to simplify the calculations, the analysis was reduced to the study of the behavior of resistance lines corresponding to four-, nine- and fifteen-level buildings with the same plane distribution. In order to obtain features similar to those of existing building elements, structures were initially loaded with seismic forces corresponding to code P13-63. The next step was to apply to previously dimensioned structures the seismic loads according to P100-3: 2008 in relation to P100-1: 2013, thus obtaining the deficiencies of the existing structures against the requirements of these norms. Correction of these strength and stiffness deficiencies was attempted by introducing X-shaped centric brace systems. The bracing systems used as consolidation methods are of three types: direct bracings stuck in the reinforced concrete frames and bracings of the indirect type, made of internal and external bracing steel frames. Structural calculations were made in the linear elastic field using the ETABS program.
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