scholarly journals CALCULATION FOR THE SEISMIC EFFECTS OF THE MOSQUE BUILDING NAMED AFTER AYMANI KADYROVA IN ARGUN

2021 ◽  
Author(s):  
Х.Н. Мажиев ◽  
И.Х. Кадаев ◽  
Х-М.С. Духаев
Keyword(s):  
Reinforced Concrete ◽  
Steel Structures ◽  
Seismic Effects ◽  
Concrete Floor

В статье рассматриваются расчеты на сейсмические воздействия уникального здания. С применением монолитного железобетонного перекрытия в рамном исполнении. А также из стальных конструкций в виде купола, расчеты выполняются программными комплексами «Лира» и «SCAD». The article deals with calculations for seismic effects of unique building in the shape of a globe using a monolithic reinforced concrete floor in frame execution. And also from steel structures in the form of a dome, calculations are performed using software complexes "Lira","SCAD".

About the reasons of formation of cracks in monolithic reinforced concrete floor slabs

2020 ◽  
pp. 70-77
Author(s):  
Lidiya Kosheleva ◽  
◽  
Sergey Mijusov ◽  
Sergey Kletenkov ◽  
Daniil Ryazantsev ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Concrete Floor ◽  
Floor Slabs ◽  
Formation Of Cracks

Seismic effects on large reinforced concrete lifelines—I. Theory

1992 ◽  
Vol 42 (2) ◽  
pp. 129-135 ◽  
Author(s):  
Y. Chen ◽  
T. Krauthammer
Keyword(s):  
Reinforced Concrete ◽  
Seismic Effects

Discussion: Reinforced Concrete Floor Systems

1906 ◽  
Vol 56 (1) ◽  
pp. 289-396
Author(s):  
Wilbur J. Watson ◽  
Clarence W. Noble ◽  
I. Kreuger ◽  
Richard T. Dana ◽  
C. A. P. Turner ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Concrete Floor ◽  
Floor Systems

Timber steel-fibre-reinforced concrete floor slabs subjected to fire

2017 ◽  
Vol 76 (1) ◽  
pp. 201-212 ◽  
Author(s):  
Jan Ekr ◽  
Eva Caldova ◽  
Petr Vymlatil ◽  
Frantisek Wald ◽  
Anna Kuklikova
Keyword(s):  
Reinforced Concrete ◽  
Steel Fibre ◽  
Fibre Reinforced Concrete ◽  
Concrete Floor ◽  
Steel Fibre Reinforced Concrete ◽  
Floor Slabs

scholarly journals Multiobjective optimal design of reinforced concrete frames using two metaheuristic algorithms

2021 ◽  
Vol 9 (4B) ◽  
Author(s):  
Mehdi Babaei ◽  
◽  
Masoud Mollayi ◽  
Keyword(s):  
Reinforced Concrete ◽  
Optimal Design ◽  
Optimization Problem ◽  
Numerical Models ◽  
Steel Structures ◽  
Metaheuristic Algorithms ◽  
Rc Structures ◽  
Weighted Sum Method ◽  
Rc Frames ◽  
Single Objective

Genetic algorithm (GA) and differential evolution (DE) are metaheuristic algorithms that have shown a favorable performance in the optimization of complex problems. In recent years, only GA has been widely used for single-objective optimal design of reinforced concrete (RC) structures; however, it has been applied for multiobjective optimization of steel structures. In this article, the total structural cost and the roof displacement are considered as objective functions for the optimal design of the RC frames. Using the weighted sum method (WSM) approach, the two-objective optimization problem is converted to a single-objective optimization problem. The size of the beams and columns are considered as design variables, and the design requirements of the ACI-318 are employed as constraints. Five numerical models are studied to test the efficiency of the GA and DE algorithms. Pareto front curves are obtained for the building models using both algorithms. The detailed results show the accuracy and convergence speed of the algorithms.

scholarly journals An estimation method for seismic effects of reinforced concrete non-structural walls to structural frame members

1989 ◽  
Vol 22 (2) ◽  
pp. 90-97
Author(s):  
Masamichi Ohkubo
Keyword(s):  
Reinforced Concrete ◽  
Residential Buildings ◽  
Estimation Method ◽  
Structural Members ◽  
Seismic Effects ◽  
Structural Walls ◽  
High Rise ◽  
Structural Frame ◽  
Weak Points

To resolve the undesirable effects of reinforced concrete non-structural walls to the earthquake behaviour of structural members, weak points (called "Structural Slits") are intentionally provided at the connection between structural members and non-structural walls. This paper presents an estimation method for the stress developed in the "Structural Slits" which are applied to the non-structural walls of reinforced concrete high-rise residential buildings.

Experimental and numerical investigation on the vertical bearing behavior of discrete connected new-type precast reinforced concrete floor system

2020 ◽  
Vol 23 (11) ◽  
pp. 2276-2291
Author(s):  
Rui Pang ◽  
Yibo Zhang ◽  
Longji Dang ◽  
Lanbo Zhang ◽  
Shuting Liang
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Cover Plate ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Concrete Floor ◽  
New Type ◽  
Vertical Bearing ◽  
Floor System ◽  
Bearing Behavior

This article proposes a new type of discrete connected precast reinforced concrete diaphragm floor system that consists of precast flat slabs and slab joint connectors. An experimental investigation of discrete connected new-type precast reinforced concrete diaphragm under a vertical distributed static load was conducted, and the effect of slab joint connectors on the load-bearing capacity was evaluated. Then, a finite element analysis of discrete connected new-type precast reinforced concrete diaphragm, precast reinforced concrete floors without slab connectors, and cast-in-situ reinforced concrete floor were performed to understand their working mechanism and determine the differences in load-bearing behavior. The results indicate that the load-bearing capacity and stiffness of discrete connected new-type precast reinforced concrete diaphragm increase considerably as the hairpin and cover plate hybrid slab joint connectors can efficiently connect adjacent precast slabs and enable them to work together under a vertical load by transmitting the shear and moment forces in the orthogonal slab laying direction. The deflection of discrete connected new-type precast reinforced concrete diaphragm in orthogonal slab laying direction is mainly caused by the opening deformation of the slab joint and the rotational deformation of the precast slabs. This flexural deformation feature can provide reference for establishing the bending stiffness analytical model of discrete connected new-type precast reinforced concrete diaphragm in orthogonal slab laying direction, which is vitally important for foundation of the vertical bearing capacity and deformation calculation method. The deflection and crack distribution patterns infer that the discrete connected new-type precast reinforced concrete diaphragm processes the deformation characteristic of two-way slab floor, which can provide a basis for the theoretical analysis of discrete connected new-type precast reinforced concrete diaphragm.

scholarly journals Investigating the effects of structural pounding on the seismic performance of adjacent RC and steel MRFs

2020 ◽  
Vol 19 (1) ◽  
pp. 317-343
Author(s):  
F. Kazemi ◽  
M. Miari ◽  
R. Jankowski
Keyword(s):  
Reinforced Concrete ◽  
Near Field ◽  
Limit State ◽  
Steel Structures ◽  
Lateral Force ◽  
Separation Distance ◽  
Natural Period ◽  
Performance Levels ◽  
Structural Pounding ◽  
Adjacent Structures

AbstractAn insufficient separation distance between adjacent buildings is the main reason for structural pounding during severe earthquakes. The lateral load resistance system, fundamental natural period, mass, and stiffness are important factors having the influence on collisions between two adjacent structures. In this study, 3-, 5- and 9-story adjacent reinforced concrete and steel moment resisting frames (MRFs) were considered to investigate the collision effects and to determine modification factors for new and already existing buildings. For this purpose, incremental dynamic analysis was used to assess the seismic limit state capacity of the structures using a developed algorithm in OpenSees software including two near-field record subsets suggested by FEMA-P695. The results of this paper can help engineers to approximately estimate the performance levels of MRFs due to pounding phenomenon. The results confirm that collisions can lead to the changes in performance levels, which are difficult to be considered during the design process. In addition, the results of the analyses illustrate that providing a fluid viscous damper between adjacent reinforced concrete and steel structures can be effective to eliminate the sudden changes in the lateral force during collision. This approach can be successfully used for retrofitting adjacent structures with insufficient in-between separation distances.

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