scholarly journals Behaviour of the water tank staging with aluminum and steel X-plate damper

2020 ◽  
Vol 184 ◽  
pp. 01078
Author(s):  
G. Nirmala ◽  
Atulkumar Manchalwar
Keyword(s):  
Energy Dissipation ◽  
Nonlinear Dynamic ◽  
Shear Force ◽  
Dynamic Behaviour ◽  
Ground Motions ◽  
Nonlinear Dynamic Analysis ◽  
Bending Moment ◽  
Water Tank ◽  
Plate Steel ◽  
Water Tanks

Many water tanks are pull-down during post-earthquake due to failure of water tank staging and this occurs because of the dynamic behaviour of the water tank staging that leads to collapse of water tank. These are important elements during post-earthquake that must be in service. In this study to reduce the damage of water tank staging by installation of additional dissipation devices known as dampers made up of X-plate steel and aluminum and these are effective in reduction of damage of structures, gives the additional damping and additional stiffness to the structure. For this study water tank staging’s with different heights are modeled in SAP-2000 and performed nonlinear dynamic analysis under four real ground motions with and without damper. After the analysis the results obtained is, Displacement, shear force, amount of energy dissipation, maximum axial force and bending moment compared with and without damper and significantly reduced.

Comportement d'un cadre rempli soumis à un chargement cyclique: modélisation pour une analyse dynamique non linéaire

1991 ◽  
Vol 18 (6) ◽  
pp. 1013-1023 ◽  
Author(s):  
Taoufik El-Ouali ◽  
Jules Houde ◽  
René Tinawi
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Dynamic Analysis ◽  
Nonlinear Dynamic ◽  
Seismic Behavior ◽  
Nonlinear Dynamic Analysis ◽  
Steel Frame ◽  
Experimental Program ◽  
Masonry Infills ◽  
Infill Panels

This paper presents the results of an experimental program investigating the behavior of a steel frame with masonry infill panels subjected to cyclic loadings. Three types of masonry frequently used were tested. Loads were high enough to crack the infill panels without yielding the steel frame. The effects of the infill panels on the stiffness and the energy dissipation of the structure were evaluated. From the experimental results obtained on the three types of masonry, models are proposed to evaluate the behavior of a structure with infill panels. These models could be used in nonlinear dynamic analysis. Key words: masonry infills, masonry, seismic behavior, cyclic loading, modelling, frames.

scholarly journals Seismic Fragility of Ordinary Reinforced Concrete Shear Walls with Coupling Beams Designed Using a Performance-Based Procedure

2020 ◽  
Vol 10 (12) ◽  
pp. 4075
Author(s):  
Seong-Ha Jeon ◽  
Ji-Hun Park
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Analysis ◽  
Seismic Design ◽  
Nonlinear Dynamic ◽  
Shear Force ◽  
Nonlinear Dynamic Analysis ◽  
Shear Walls ◽  
Analytical Models ◽  
High Rise ◽  
Collapse Probability

The seismic performance of ordinary reinforced concrete shear walls, that are commonly used in high-rise residential buildings in Korea (h < 60 m), but are prohibited for tall buildings (h ≥ 60 m), is evaluated in this research project within the framework of collapse probability. Three bidimensional analytical models comprised of both coupled and uncoupled shear walls exceeding 60 m in height were designed using nonlinear dynamic analysis in accordance with Korean performance-based seismic design guidelines. Seismic design based on nonlinear dynamic analysis was performed using different shear force amplification factors in order to determine an appropriate factor. Then, an incremental dynamic analysis was performed to evaluate collapse fragility in accordance with the (Federal Emergency Management Agency) FEMA P695 procedure. Four engineering demand parameters including inter-story drift, plastic hinge rotation angle, concrete compressive strain and shear force were introduced to investigate the collapse probability of the designed analytical models. For all analytical models, flexural failure was the primary failure mode but shear force amplification factors played an important role in order to meet the requirement on collapse probability. High-rise ordinary reinforced concrete shear walls designed using seven pairs of ground motion components and a shear force amplification factor ≥ 1.2 were adequate to satisfy the criteria on collapse probability and the collapse margin ratio prescribed in FEMA P695.

Study on Seismic Performance of Regular RC Frame with Specially Shaped Columns

2011 ◽  
Vol 243-249 ◽  
pp. 5152-5156 ◽  
Author(s):  
Jian Tang ◽  
Ping Wen Mao
Keyword(s):  
Dynamic Analysis ◽  
Seismic Performance ◽  
Nonlinear Dynamic ◽  
Ground Motions ◽  
Nonlinear Dynamic Analysis ◽  
Rc Frame ◽  
Technical Regulation ◽  
Calculation Results ◽  
Primary Evaluation ◽  
Rare Earthquake

According to the code and technical regulation, a regular RC frame with specially shaped columns have been designed, which situated at the area of fortification intensity 7(0.15g). Subsequently, the nonlinear dynamic analysis has been carried out for the structure by inputting ground motions in one direction. After summing up the calculation results, this paper have examined seismic performance of the structure under the rare seismic actions and given a primary evaluation on the structure to see if it achieves the predetermined seismic aims. It indicates that the structure designed the codes can achieve the predetermined seismic aims under the rare earthquake.

Study on Seismic Performance of Irregular RC Frame with Specially Shaped Columns

2014 ◽  
Vol 580-583 ◽  
pp. 1712-1717
Author(s):  
Jian Tang ◽  
Lang Wu
Keyword(s):  
Dynamic Analysis ◽  
Seismic Performance ◽  
Nonlinear Dynamic ◽  
Ground Motions ◽  
Nonlinear Dynamic Analysis ◽  
Rc Frame ◽  
Technical Regulation ◽  
Calculation Results ◽  
Primary Evaluation ◽  
Rare Earthquake

According to the code and technical regulation, a irregular RC frame with specially shaped columns have been designed, which situated at the area of fortification intensity 7. Subsequently, the nonlinear dynamic analysis has been carried out for the structure by inputting ground motions in two directions. After summing up the calculation results, this paper have examined seismic performance of the structure under the rare seismic actions and given a primary evaluation on the structure to see if it achieves the predetermined seismic aims. It indicates that the structure designed the codes can achieve the predetermined seismic aims under the rare earthquake.

scholarly journals Impact of Revised Code Provisions of Seismic and Wind Loads on RCC Elevated Water Tanks

2019 ◽  
Vol 8 (11) ◽  
pp. 1216-1221
Keyword(s):  
Shear Force ◽  
Emergency Service ◽  
Bending Moment ◽  
Ground Level ◽  
Base Shear ◽  
Internal Parameters ◽  
Earthquake Design ◽  
Elevated Water ◽  
Water Tanks ◽  
Code Provisions

Reinforced concrete elevated water tanks have been reckoned as importance structure for post-earthquake and Post cyclonic emergency service consideration.Certain additional guidelines have been recommended in IS 1893 (Part-2) 2014 Earthquake code and IS 875 (Part-3) 2015Wind load code in cyclonic prone areas of Indian peninsula. Three different capacities of RCC Elevated water tanks have been examined the effects of revised code provisions with the STAAD Pro (v8i) software to assess the internal parameters such as axial force at the ground level, Bending moment, Base Shear force and finally the quantity of steel required. The effect of Zonal classifications is illustrated and finally it can be concluded that the Earthquake design criteria governs when compared to Cyclonic load consideration

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