Structural Analysis and Rehabilitation of Reinforced Concrete Shells

Structural analysis is used to assess the behavior of engineering structures under the application of loads. Usually, structural analysis methods include analytical,experimental and numerical methods is used in thisproject, however, only Analytical method is used and the values are taken from literature reference, to get familiar with Finite Element Analysis (FEA) using ANSYS, this is done to acquire practical knowledge about of the effect of the cover. The aim is to identify different failure modes under a range of loading conditions by changing the cover size to get the data of various parameters such as deflection, stress etc. Study of cover helps to observe the stability, reliability and the overall strength of the structural beam. This project attempts made to study the effect of cover on the behavior of reinforced concrete beam. Forthis analytical study, the Reinforced concrete beam specimen of 2000x100x200mm was considered.ANSYS software is a suite of engineering simulation software, based on finite element method, which can solve problems ranging from linear analysis to nonlinear analysis. The Doubly reinforced beams weremodeled by using geometry. In this model,various covers are provided. The beam specimensused in this study were tested under two-point static loading condition until failure of the specimen. From theobtained resultconcluded that the total deformation and directional deformation values are low in 25mm cover compared to other cases but the equivalent stress value is low in 35mm cover size compared to 25mm cover size.

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DETECTION OF STRUCTURAL PATHOLOGIES IN BUILDINGS USING ARCHITECTURAL PHOTOGRAMMETRY

Proceedings of International Structural Engineering and Construction ◽

10.14455/isec.2021.8(1).aae-04 ◽

2021 ◽

Vol 8 (1) ◽

Author(s):

Frank Navarro Tamayo ◽

Ana Luisa Rodriguez Quesada ◽

Veronica Avila Ayon ◽

Alexander Justel Betancourt

Keyword(s):

Reinforced Concrete ◽

Comparative Analysis ◽

Structural Analysis ◽

Environmental Pollution ◽

Reinforced Concrete Structures ◽

Accurate Data ◽

Conservation Actions ◽

Natural Degradation ◽

Degradation Of Materials ◽

Deterioration Characteristics

Environmental pollution and natural degradation of materials cause deterioration in buildings, initiating pathological processes that require conservation actions. Architectural Photogrammetry will be discussed as a tool to identify different pathologies on buildings and to accurately measure deflections. A photographic study was conducted of the most common deflections on reinforced concrete structures, with samples of different ages and locations exposed to various environments within Holguin Province in Cuba to detect deterioration characteristics, causes and possible treatments. A comparative analysis of other common methods and instruments currently used to measure structural pathologies highlights the efficiency of architectural photogrammetry. Photogrammetry is suitable to study the most common pathologies, their causes, and potential solutions. These include: cracks, fissures, deflection in beams, footing settlement, slenderness in columns, and more. In addition to the scope and efficiency of photogrammetry, this technology also facilitates studying inaccessible points on large elements. The instantaneous recording of accurate data about physical objects gives photogrammetry advantages over conventional structural analysis methods.

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The Plastic Hinge

Fracture and Damage Mechanics for Structural Engineering of Frames - Advances in Civil and Industrial Engineering ◽

10.4018/978-1-4666-6379-4.ch006 ◽

2015 ◽

pp. 172-230

Keyword(s):

Reinforced Concrete ◽

Structural Analysis ◽

Plastic Hinge ◽

Steel Frames ◽

Concrete Structures ◽

Reinforced Concrete Structures ◽

Plastic Hinges

The plastic hinge is a key concept of the theory of frames that differentiates this theory from the remaining models for structural analysis. This chapter is exclusively dedicated to define this concept and describe the different models of plastic hinges. It also discusses the differences of implementation between plastic hinges in steel frames (Sections 6.1-6.4) and those in reinforced concrete structures (Sections 6.5-6.6). This chapter is based on the ideas presented in Chapter 5 and it allows formulating the models for elasto-plastic frames that are introduced in the next chapter.

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