Maximum-entropy meshfree method for nonlinear static analysis of planar reinforced concrete structures

2012 ◽  
Vol 42 ◽  
pp. 179-189 ◽  
Author(s):  
G. Quaranta ◽  
S.K. Kunnath ◽  
N. Sukumar
Keyword(s):  
Reinforced Concrete ◽  
Maximum Entropy ◽  
Static Analysis ◽  
Concrete Structures ◽  
Meshfree Method ◽  
Nonlinear Static Analysis ◽  
Reinforced Concrete Structures ◽  
Nonlinear Static

scholarly journals Progressive Collapse Analysis of Reinforced Concrete Structures: A Simplified Procedure

2017 ◽  
Vol 2 (10) ◽  
pp. 7 ◽  
Author(s):  
Arash Naji ◽  
Mohamadreza Rohani
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Analysis ◽  
Static Analysis ◽  
Progressive Collapse ◽  
Concrete Structures ◽  
Nonlinear Static Analysis ◽  
Reinforced Concrete Structures ◽  
Collapse Analysis ◽  
Nonlinear Static ◽  
Progressive Collapse Analysis

In this paper, a simplified analysis procedure to calculate the column removed point displacement at progressive collapse analysis of reinforced concrete structures is proposed. The energy absorption capacity under the column missing event is used for formulations. The approximate method is simple to utilize, user friendly, yet accurate. For progressive collapse analysis of structures, linear static analysis, nonlinear static analysis, linear dynamic analysis and nonlinear dynamic analysis can be performed. In this paper, the nonlinear static analysis from alternate load path method is used and the reason of initial local collapse has not been considered. In fact, an energy-based method by using load-displacement curve of RC frame and considering the effect of floor slab for the progressive collapse analysis is considered. The accuracy of the proposed method is demonstrated by comparing the results to three experimental and analytical results. Finally, the effects of the spans length, sections dimensions, material properties and the beams reinforcements of column removed spans on substructure behavior is studied, as well.

scholarly journals Realization of reinforced concrete structures analysis with the account of physical and geometrical nonlinearity in computer program PRINS

2018 ◽  
Vol 251 ◽  
pp. 04035 ◽  
Author(s):  
Vladimir Agapov
Keyword(s):  
Reinforced Concrete ◽  
Stiffness Matrix ◽  
Geometrical Nonlinearity ◽  
Concrete Structures ◽  
Nonlinear Static Analysis ◽  
Initial Stresses ◽  
Reinforced Concrete Structures ◽  
The Finite Element Method ◽  
Step Method ◽  
The Matrix

An algorithm of physically and geometrically nonlinear static analysis of structures by the finite element method is described, the distinguishing feature of which is the use of a full nonlinear stiffness matrix. This matrix is represented as the sum of five terms, namely, the stiffness matrix of the zero, first and second order, as well as matrices of initial displacements and initial stresses. When using modified Lagrange coordinates, the matrix of the initial displacements becomes a zero matrix. The calculation is carried out by a step-by-step method. Features of the application of this technique in the calculation of reinforced concrete structures are considered. The examples of static nonlinear analysis of reinforced concrete structures with the aid of program PRINS are given.

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