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Analysis of RC structures with different design mistakes under explosive based demolition
Structural Concrete ( IF 3.0 ) Pub Date : 2020-12-15 , DOI: 10.1002/suco.201900367
Hakan Özmen 1 , Kurtuluş Soyluk 2 , Özgür Anil 2
Affiliation  

Most of the RC buildings in Turkey have reached the end of their economic lifespan, so urban transformation studies have been accelerated in recent years. Considering the fact that these buildings do not meet the construction regulations and have structural defects in terms of earthquake resistance is concluded the necessity of renewal of this building stock. For this reason, it is needed to study the explosive based demolition technique, which have been widely used in the future in Turkey. The aim of this study is to analyze the structural behavior of buildings planed for demolition by using explosive materials and demonstrating the effect of structural faults on the demolition process. In this context, the effect of structural defects on structural behavior is investigated under explosive based demolition for a typical RC framed building model. Within the scope of the study, it is aimed to investigate the effects of design errors frequently encountered in reinforced concrete structures during the demolition of the building using explosives. The main objective of the study is to determine the effects of design errors, which may be present in the building on important results such as demolition of reinforced concrete structures that are planned to be demolished in two different types using an explosive inside or towards a selected direction, distribution of the parts scattered after demolition and the demolition time. In this way, it is aimed to prevent accidents or unwanted demolition patterns that may occur in demolition works of reinforced concrete structures with design errors. A 12-storey square building in plan with 6x6 axles (5 m axle opening) is selected as a structural system. The selected structure has been designed with Ide Static Structural Analysis Program. The same structure is also modeled with extreme loading for structures (ELS) program for low concrete strengths, reinforcement defects, and locally located structural defects considering inside and side demolition used explosives. All building models have been subjected to the same blast planning. It is observed that reduced the concrete strength and reinforcement faults shorten the time of destruction of buildings scheduled for demolition by using explosive materials and all the structural defects effect the debris affecting area. It is generally concluded that, all the structural defects are affective on the structural behavior of buildings under explosive based demolition.

中文翻译:

炸药爆破下不同设计错误的钢筋混凝土结构分析

土耳其的大部分 RC 建筑已达到其经济寿命的终点,因此近年来加快了城市转型研究。考虑到这些建筑物不符合施工规范,并且在抗震性方面存在结构缺陷,因此认为需要更新该建筑物。为此,有必要研究以炸药为基础的爆破技术,该技术未来在土耳其已被广泛使用。本研究的目的是通过使用爆炸材料分析计划拆除建筑物的结构行为,并证明结构故障对拆除过程的影响。在此背景下,针对典型的 RC 框架建筑模型,在基于爆炸物的拆除下研究了结构缺陷对结构行为的影响。在研究范围内,旨在研究在使用炸药拆除建筑物期间经常遇到的钢筋混凝土结构设计错误的影响。该研究的主要目的是确定建筑中可能存在的设计错误对重要结果的影响,例如拆除计划以两种不同类型拆除的钢筋混凝土结构,使用炸药内部或朝向选定的方向、拆除后散落部位的分布和拆除时间。通过这种方式,旨在防止在钢筋混凝土结构的拆除工程中可能出现设计错误的事故或不需要的拆除模式。选择一幢 12 层的方形建筑,6x6 轴(5 m 轴开口)作为结构体系。所选结构已使用 Ide 静态结构分析程序进行设计。考虑到内部和侧面拆除使用的炸药,同样的结构还使用极端载荷结构 (ELS) 程序建模,用于低混凝土强度、钢筋缺陷和局部结构缺陷。所有建筑模型都经过相同的爆破规划。据观察,降低混凝土强度和钢筋故障缩短了使用爆炸材料和所有结构缺陷影响碎片影响区域的计划拆除建筑物的破坏时间。普遍认为,所有结构缺陷都会影响爆炸性拆除建筑物的结构行为。考虑到内部和侧面拆除使用的炸药,同样的结构还使用极端载荷结构 (ELS) 程序建模,用于低混凝土强度、钢筋缺陷和局部结构缺陷。所有建筑模型都经过了相同的爆破规划。据观察,降低混凝土强度和钢筋故障缩短了使用爆炸材料和所有结构缺陷影响碎片影响区域的计划拆除建筑物的破坏时间。普遍得出结论,所有结构缺陷都会影响爆炸性拆除建筑物的结构行为。考虑到内部和侧面拆除使用的炸药,同样的结构还使用极端载荷结构 (ELS) 程序建模,用于低混凝土强度、钢筋缺陷和局部结构缺陷。所有建筑模型都经过相同的爆破规划。据观察,降低混凝土强度和钢筋故障缩短了使用爆炸材料和所有结构缺陷影响碎片影响区域的计划拆除建筑物的破坏时间。普遍认为,所有结构缺陷都会影响爆炸性拆除建筑物的结构行为。考虑内部和侧面拆除使用的炸药的局部结构缺陷。所有建筑模型都经过相同的爆破规划。据观察,降低混凝土强度和钢筋故障缩短了使用爆炸材料和所有结构缺陷影响碎片影响区域的计划拆除建筑物的破坏时间。普遍认为,所有结构缺陷都会影响爆炸性拆除建筑物的结构行为。考虑内部和侧面拆除使用的炸药的局部结构缺陷。所有建筑模型都经过相同的爆破规划。据观察,降低混凝土强度和钢筋故障缩短了使用爆炸材料和所有结构缺陷影响碎片影响区域的计划拆除建筑物的破坏时间。普遍认为,所有结构缺陷都会影响爆炸性拆除建筑物的结构行为。据观察,降低混凝土强度和钢筋故障缩短了使用爆炸材料和所有结构缺陷影响碎片影响区域的计划拆除建筑物的破坏时间。普遍认为,所有结构缺陷都会影响爆炸性拆除建筑物的结构行为。据观察,降低混凝土强度和钢筋故障缩短了使用爆炸材料和所有结构缺陷影响碎片影响区域的计划拆除建筑物的破坏时间。普遍认为,所有结构缺陷都会影响爆炸性拆除建筑物的结构行为。
更新日期:2020-12-15
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