Features of Modeling of Reinforced Concrete Structures in Calculations by the Finite Element Method
Harlanov Vladimir,
Harlanova Svetlana
Issue:
Volume 7, Issue 2, April 2022
Pages:
14-17
Received:
9 October 2021
Accepted:
25 November 2021
Published:
18 March 2022
Abstract: Finite elements and solution methods of nonlinear equations in combination with high-performance computing technology make it possible to perform analysis of large and complex systems taking into account nonlinear deformation of the material. However, the applicable standard methods of calculation are presented on the cross-section of the element. To fill this gap, the authors propose a method of modeling of concrete finite element, based on existing norms and state standards. The authors propose to take into account the destruction of elements in the treatment process. In this case, the nodal reaction of destroyed elements are applied as external load. Modeling of damage to concrete cube press. A comparison of different theories of strength for the calculation of the equivalent stress. As a skeletal chart selected state diagram with explicit separation of plastic and elastic deformations. Diagrams of deformation of the cross section of the cube in the process of loading the Deformation model. Identified areas of damage to concrete cube when reaching the ultimate strain. Defined theory of strength and the model that best reflects actual stress - deformation of concrete during the treatment process. The proposed method can be applied for numerical analysis of reinforced concrete structures by finite element method.
Abstract: Finite elements and solution methods of nonlinear equations in combination with high-performance computing technology make it possible to perform analysis of large and complex systems taking into account nonlinear deformation of the material. However, the applicable standard methods of calculation are presented on the cross-section of the element. ...
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Study on Performance Factors of Public Building Construction Project in Assosa Zone
Issue:
Volume 7, Issue 2, April 2022
Pages:
18-22
Received:
17 March 2022
Accepted:
30 May 2022
Published:
9 June 2022
Abstract: Construction industry is highly competitive and a job creator for a different groups of expertise such as owners, consultants, contractors and other shareholders. General objectives is to assess the effects of issues determining the presentation of public building construction project in Assosa Zone. The research was used quantitative design; the data was collected from owners, consultants, and contractors using questionnaires and interviews. The performance problems of which the respondents were asked to rank each according to the five-point Likert scale. The results of this research identified 74 factors influencing the performance of public building construction project. From among factors escalation of material prices, unavailability of resources as planned through project duration, sequencing of work according to schedule, differentiation of currency prices, leadership skills of project manager, are the top five significant factors in Assosa zone. To accomplish the public building construction project without delay the clients should hire a specialized engineer and the consultant should give training for the project organization. The contractors should be using the qualified employees with good experience to avoid any problems during construction of the project.
Abstract: Construction industry is highly competitive and a job creator for a different groups of expertise such as owners, consultants, contractors and other shareholders. General objectives is to assess the effects of issues determining the presentation of public building construction project in Assosa Zone. The research was used quantitative design; the d...
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