scholarly journals EFFECTS OF SOIL CONDITION ON RESPONSE REDUCTION FACTOR OF ELEVATED RC WATER TANK

2015 ◽  
Vol 2 (06) ◽  
Keyword(s):  
Soil Condition ◽  
Reduction Factor ◽  
Water Tank ◽  
Response Reduction Factor

scholarly journals Analytical Investigation of Response Reduction Factor (R) for R.C. Elevated Water Tank with Non-linear Static (Pushover) Analysis

2021 ◽  
Author(s):  
Saurabh Kulkarni ◽  
S. S Kadam ◽  
P. B Zambare
Keyword(s):  
Soil Properties ◽  
Pushover Analysis ◽  
Reduction Factor ◽  
Soil Conditions ◽  
Water Tank ◽  
Response Reduction Factor ◽  
Finite Element Software ◽  
Nonlinear Static ◽  
Static Pushover Analysis ◽  
Nonlinear Static Pushover Analysis

In the present work, an attempt is made to investigate response reduction factor (R) values of different soil types by using nonlinear static (Pushover) analysis for R.C. elevated rectangular water tank structure. All the parameters were investigated by varying properties of soft, medium and hard soils to cover a method of nonlinear static (Pushover) analysis. The zone factor (Z) kept constant Z – III for pandharpur site location and capacity of 150 m3 tank full in condition. This has resulted into SAP 2000 finite element software. The analysis of response reduction factor (R) value was done under three different soil conditions i.e. soft soil properties, medium soil properties, and hard soil properties. Response reduction factor (R) values indicate that R.C. elevated rectangular water tank structure without soil properties behaves quite the one value as per codal provisions.

Development of Indian standards in EQ resistant design of bridges – past, present and future prospects

2021 ◽  
Author(s):  
Alok Bhowmick ◽  
Harpreet Singh
Keyword(s):  
Seismic Design ◽  
Soil Condition ◽  
Reduction Factor ◽  
Design Parameters ◽  
Seismic Zone ◽  
Ground Acceleration ◽  
Response Reduction Factor ◽  
Local Soil ◽  
Importance Factor ◽  
Indian Railway

<p>Evolution of seismic design provisions in various Indian Standards over the last 50 years have been reviewed in this paper. Seismic provisions of Bureau of Indian Standards (BIS) code (IS 1893), Indian Road Congress (IRC) standard (IRC:6 &amp; IRC:SP:114) and Indian Railway standards (IRS code) are compared. Design parameters for comparison include the seismic zone factor / peak ground acceleration, importance factor, local soil condition, design spectra and response reduction factor.</p>

scholarly journals Seismic Performance of Elevated Reinforced Concrete Water Tanks

2021 ◽  
Vol 16 (1) ◽  
pp. 51-60
Author(s):  
Sandesh Sagar Tripathi ◽  
Kamal Bahadur Thapa
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Research Work ◽  
Reduction Factor ◽  
Water Tank ◽  
Geological Condition ◽  
Response Reduction Factor ◽  
Economical Design ◽  
Elevated Water ◽  
Water Tanks

Most of the codal provisions used worldwide for the design of elevated water tanks incorporates the nonlinear response through reduction factor that considers overstrength, ductility and redundancy. The majority of these codes provide a value which incorporates the demand of their geological condition and construction industry. In Nepal, there is lack of own guidelines and codes for the seismic design of elevated water tanks. In the present work, seismic performance of elevated reinforced concrete (RC) Intze type water tank is evaluated and value of the response reduction factor (R) for the design of such tank is determined. In this research work 34 models of elevated reinforced water tank were analyzed using SAP 2000 to evaluate the seismic performance with varying tank filling condition and staging height for 450 cumec and 225 cumec capacity. Based on the results, it is concluded that single value of response reduction factor cannot be justified for all heights and capacity of elevated RC water tank. So, for economical design purpose, estimation of response reduction factor with exact analysis is preferred.

Investigation on Buckling Behavior of Cylindrical Liquid Storage Tanks Under Seismic Loading: 3rd Report — Proposed Design Procedure Considering Dynamic Response Reduction

2003 ◽  
Author(s):  
Akihisa Sugiyama ◽  
Koji Setta ◽  
Yoji Kawamoto ◽  
Koji Hamada ◽  
Hideyuki Morita ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Seismic Loading ◽  
Absorption Capacity ◽  
Reduction Factor ◽  
Storage Tanks ◽  
Energy Absorption Capacity ◽  
Design Guideline ◽  
Response Reduction Factor ◽  
Liquid Storage ◽  
Thin Walled

As for thin walled cylindrical liquid storage tanks in nuclear power plants, the current elastic design guideline against seismic loading might result in too conservative component design as compared with elasto-plastic design in general industries. Therefore, it is thought possible to make the design guideline more reasonable by taking dynamic response reduction into account. In this series of study, experiments using scaled models were carried out, and seismic behavior of thin walled cylindrical liquid storage tanks was simulated to investigate energy absorption capacity and seismic resistance of those tanks. In this 3rd report of series of studies, seismic behavior of tanks was simulated to estimate a dynamic response reduction factor. This factor is based on the energy absorption capacity of structures. Through experiments and numerical study, a response reduction factor to design thin walled cylindrical liquid storage tanks has been proposed.

A Load Combination Method for Aseismic Design of Multiple Supported Piping Systems

1989 ◽  
Vol 111 (1) ◽  
pp. 10-16 ◽  
Author(s):  
K. Suzuki ◽  
A. Sone
Keyword(s):  
Structural Model ◽  
Response Spectrum ◽  
Reduction Factor ◽  
Combination Method ◽  
Piping System ◽  
Response Reduction Factor ◽  
Load Combination ◽  
Combination Scheme ◽  
Piping Systems ◽  
Reduction Effect

A new load combination scheme for seismic response calculation of piping systems subjected to multiple support excitations is presented. This scheme has an advantage, such that the cross-correlation among support excitations are properly taken into account by use of a stationary random vibration approach. The authors also present the idea of generating a “multi-excitation floor response spectrum.” First, using a simple analytical SDOF piping system to two support excitations and a simple Z-shaped piping model for shaking test, the combination law is supplied to various correlation cases of two support excitations and the maximum responses of piping in a fundamental mode is calculated. Second, nonlinear characteristics such as gap and friction appearing between piping itself and supports are specifically investigated. The response effect due to these nonlinearities is evaluated by the results through the shaking test with a piping-support structural model, and the amount of response reduction effect is represented by “a response reduction factor β.”

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