DETECTION OF STRUCTURAL PATHOLOGIES IN BUILDINGS USING ARCHITECTURAL PHOTOGRAMMETRY

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.

The Plastic Hinge

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.

Development of Automatic Reinforcement Bar Placement for RC Walls Based on Structural Building Information Modeling (S-BIM)

2013 ◽  
Vol 711 ◽  
pp. 623-628 ◽  
Author(s):  
A Ra Ko ◽  
Je Hyuk Lee ◽  
Hyun Suk Jang ◽  
Seung Il Lee ◽  
Young Sang Cho
Keyword(s):  
Reinforced Concrete ◽  
Structural Analysis ◽  
Building Information Modeling ◽  
Concrete Structures ◽  
Information Modeling ◽  
Reinforced Concrete Structures ◽  
Analysis And Design ◽  
Building Information ◽  
Shop Drawing ◽  
Reinforcement Bar

Structural building information modeling (S-BIM) for reinforced concrete walls based on parametric technique has studied. There are structural analysis and design packages for reinforced concrete structures. 3D BIM platforms which are recently developed and widely adopted in the construction industry are mostly experiencing a difficulty in interoperability with structural analysis and design packages. The modeling of reinforcement placement in the reinforced concrete structures can not be performed using current BIM platforms based on the result of structural analysis and design. This study develops the algorithm and implementation of integrated reinforcement bar placement system by creating a database that stores the results of structural analysis and design so that overall reinforced concrete model including re-bar can be built. Utilization of S-BIM can reduce the time of engineering, the production of working drawing and shop drawing.

scholarly journals Estimation of the pull-off resistance models of reinforced concrete structures by a numerical method

2021 ◽  
Vol 350 ◽  
pp. 00011
Author(s):  
Mikalai Shalabyta ◽  
Elizabeth Matweenko ◽  
Nikifor Matweenko ◽  
Valery Rakhuba
Keyword(s):  
Numerical Modeling ◽  
Reinforced Concrete ◽  
Comparative Analysis ◽  
Strain State ◽  
Numerical Models ◽  
Tensile Force ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
New Information ◽  
Concrete Elements

Comparative analysis of calculations of calculation numerical models for pulling out embedded parts in reinforced concrete structures is carried out. Based on the results of numerical modeling, new information about the stress-strain state in reinforced concrete elements from the local action of the tensile force has been obtained.

scholarly journals Cracking and strength of reinforced concrete structures in flexure strengthened with carbon fibre laminates

2007 ◽  
Vol 13 (4) ◽  
pp. 317-323
Author(s):  
Juozas Valivonis ◽  
Tomas Skuturna
Keyword(s):  
Reinforced Concrete ◽  
Comparative Analysis ◽  
Carbon Fibre ◽  
Experimental Research ◽  
Design Procedure ◽  
Design Methods ◽  
Reinforced Concrete Structures ◽  
External Reinforcement ◽  
Tension And Compression ◽  
Theoretical Results

The article presents the analysis of the cracking moment and the strength of beams reinforced with external carbon fibre. Experimental research of beams strengthened in this way has been carried out. Three different methods of anchoring external reinforcement were applied to strengthen the beams. The influence of anchorage on the cracking moment and the strength of the beams has been defined. Design methods for defining the cracking moment and the strength have been presented. The design procedure for defining the cracking moment evaluates the curvilinear stress diagrams of concrete under tension and compression. The design procedure for defining the strength of the structures evaluates the stiffness of the contact between the carbon fibre and the concrete. The design results are provided. Comparative analysis of the experimental and the theoretical results has been performed.

scholarly journals CRACKING AND STRENGTH OF REINFORCED CONCRETE STRUCTURES IN FLEXURE STRENGTHENED WITH CARBON FIBRE LAMINATES

2007 ◽  
Vol 13 (4) ◽  
pp. 317-323 ◽  
Author(s):  
Juozas Valivonis ◽  
Tomas Skuturna
Keyword(s):  
Reinforced Concrete ◽  
Comparative Analysis ◽  
Carbon Fibre ◽  
Experimental Research ◽  
Design Procedure ◽  
Design Methods ◽  
Reinforced Concrete Structures ◽  
External Reinforcement ◽  
Tension And Compression ◽  
Theoretical Results

The article presents the analysis of the cracking moment and the strength of beams reinforced with external carbon fibre. Experimental research of beams strengthened in this way has been carried out. Three different methods of anchoring external reinforcement were applied to strengthen the beams. The influence of anchorage on the cracking moment and the strength of the beams has been defined. Design methods for defining the cracking moment and the strength have been presented. The design procedure for defining the cracking moment evaluates the curvilinear stress diagrams of concrete under tension and compression. The design procedure for defining the strength of the structures evaluates the stiffness of the contact between the carbon fibre and the concrete. The design results are provided. Comparative analysis of the experimental and the theoretical results has been performed.

scholarly journals BIM, STRUCTURAL ANALYSIS AND COMMUNICATION USING COMMON DATA ENVIRONMENT (CDE) IN THE FIELD OF WATER MANAGEMENT

2019 ◽  
Vol XLII-5/W2 ◽  
pp. 93-94
Author(s):  
P. Vlasák ◽  
B. Čerbák
Keyword(s):  
Water Management ◽  
Reinforced Concrete ◽  
Structural Analysis ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Management Technology ◽  
Design Software ◽  
Project Participants ◽  
Data Environment ◽  
Standard Support

<p><strong>Abstract.</strong> Presentation consists of three parts, which are interconnected:</p><ol><li>BIM application for plants treatment and other complicated structures in the field of water management</li><li>Statics of water management structures in the BIM environment</li><li>Application of Common Data Environment (CDE) for water management</li></ol><p>Two areas – statics and water management technology – are crucial for water management structures. Speaking of statics, we mean the statics of reinforced concrete structures. In our company AQUA PROCON s.r.o. we deal with this area comprehensively, ie. from the initial design in the BIM architectural and construction software, through transferring a load-bearing model to BIM software for 3D reinforcement modelling to evaluating model in static design software. All communication is held in Common Data Environment (CDE). Within this environment, a three-way communication is carried out by the designer, contractor and contracting authority. Part of our performance is also above-standard support for reinforced concrete contractors. We provide models of reinforced concrete structures in LOD 400. The use of Common Data Environment (CDE) does not concern only statics, but also the work of all other professions and project participants. Our activities and workflows are based on the philosophy of OPENBIM and IFC.</p>

Importance of Physico-Chemical Methods in Evaluating the State of Building Structures and Design of their Redevelopment

2013 ◽  
Vol 409-410 ◽  
pp. 355-361
Author(s):  
Ámos Dufka ◽  
Lenka Mészárosová ◽  
Jana Kosíková
Keyword(s):  
Reinforced Concrete ◽  
Structural Analysis ◽  
The State ◽  
Strength Characteristics ◽  
Reinforced Concrete Structures ◽  
Building Structures ◽  
Chemical Methods ◽  
Physico Chemical ◽  
Complex Evaluation ◽  
Building Practice

The experience in building practice proves that in assessing and evaluating the state of reinforced concrete structures, also professional companies place a clear emphasis mainly on determining the strength characteristics of concrete, assessing the rate of corrosion and the distribution of reinforcements in assessed elements. Obtaining these data is essential for the structural analysis of a structure. However, from the view of a complex evaluation of the state of structures, this information is quite insufficient, for example because of fully omitting the evaluation of the state or rate of degradation of concrete by action of chemically aggressive substances from the outside environment. For example, it is not possible to predict further life of a structure in a relevant manner on the basis of facts only found out by testing the strength characteristics of concrete.

scholarly journals Comparative analysis of normative provisions for seismic design and detailing of reinforced concrete structures

2019 ◽  
Vol 12 (5) ◽  
pp. 1220-1247
Author(s):  
R. A. RODRIGUES ◽  
C. E. N. MAZZILLI ◽  
T. N. BITTENCOURT
Keyword(s):  
Reinforced Concrete ◽  
Comparative Analysis ◽  
Seismic Design ◽  
Seismic Analysis ◽  
Response Spectrum ◽  
Concrete Structures ◽  
Eurocode 8 ◽  
Reinforced Concrete Structures ◽  
Seismic Design Of Structures

Abstract The main objective of this work is to carry out a comparative analysis between the methods and provisions of the Brazilian code ABNT NBR 15421:2006 and those of the ASCE/SEI 7 and the Eurocode 8, on the seismic design of structures. The similarities and differences between these standards, as far as the application of the Equivalent Lateral Forces method (ELFM) and the Response Spectrum method (RSM) are concerned, will be addressed. The responses will be evaluated for a case study that will be modelled by the SCIA Engineer 17 software. This paper also presents some comments on the detailing of reinforced concrete structures to ensure a good performance under seismic loading, allowing for a more favourable interpretation of the seismic analysis results.

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