Study on storey shear and base shear for irregular G+3, G+6 structures in seismic zones II and III erected on all three soils

2021 ◽  
Author(s):  
Vanadeep Cotipalli ◽  
T. Srinivas ◽  
Vegiraju Naresh Kumar Varma
Keyword(s):  
Base Shear ◽  
Seismic Zones

scholarly journals Analysis of Multistory Buildings With Stub Column In Different Seismic Zones In India – A Review

2022 ◽  
pp. 44-49
Author(s):  
Somasundhara Naathan M ◽  
Dr Ramadevi K
Keyword(s):  
Seismic Analysis ◽  
Pushover Analysis ◽  
Seismic Load ◽  
Base Shear ◽  
Software Analysis ◽  
Multistory Buildings ◽  
Seismic Zones ◽  
Story Drift ◽  
Stub Column ◽  
Stub Columns

Construction of building requires proper planning and management. Buildings are subjected to various loads such as dead load, live load, wind load and seismic load. Seismic load has extreme adverse effect on building so it is necessary to perform seismic analysis. This paper explains about the response of building when it is subjected to seismic load, this response can be shown by story drift and base shear. Behavior of buildings with stub columns is analyzed and the results are compared with buildings without stub columns. Seismic analysis has been performed on (G+7) buildings located in seismic zones 2,3,4&5 using ETABS software. Analysis has been performed according to IS 1893:PartI (2002).The storey drift and design base shear are evaluated and compared. Pushover analysis was performed and the results were compared.

scholarly journals Base shear variation for irregular G+6, G+9 and G+12 structures in seismic zones IV and V for three soil types

2021 ◽  
Vol 309 ◽  
pp. 01193
Author(s):  
Vanadeep Cotipalli
Keyword(s):  
Soil Types ◽  
Base Shear ◽  
Soft Soils ◽  
Variable Parameters ◽  
Seismic Zones ◽  
Lateral Forces ◽  
Seismic Force ◽  
G 12 ◽  
Structure Height

It is attempted to expand upon the understanding on the structure’s behaviour when the seismic force, which is one of the predominant lateral forces, is applied on the structure. The base shear is calculated and compared for various variable parameters. For the three soil types the base shear is contrasted while varying the building heights of an irregularly planned structure in the seismic zones: IV and V. The structures’ heights are taken as follows: G+6, G+9, G+12 and storey height as 3m. Concluded observations talks about the amount of the variation in the base shear when the structure height and soil types are altered. While the G+9 and G+12 structures behaved identically, the G+6 structures in the medium and the soft soils fetched same results.

scholarly journals Seismic Analysis of Circular Elevated Water Tank Designed by Indian Standard and European Standard Code

2021 ◽  
Vol 9 (10) ◽  
pp. 1638-1641
Author(s):  
Siddhnath Verma
Keyword(s):  
Soft Soil ◽  
Soil Conditions ◽  
Water Tank ◽  
Base Shear ◽  
European Standard ◽  
Soil Medium ◽  
Seismic Zones ◽  
Standard Code ◽  
Hard Soil ◽  
Elevated Water

Abstract: Elevated water tank is used for storage of water which is used for distribution to the public at certain pressure head. In high seismic zones the safety of water tank becomes point of great concern which in case of failure becomes very hazardous for public because of deficiency of water for public use and difficulty in putting fire away caused by earthquake. The water tank must be designed as much strong so that it can perform during and after earthquake without failing. The aim of this study is to design the elevated water tank as per Indian standard code and European standard code on ETABS software. In this study an elevated circular water tank of 35 m3 capacity is being designed in seismic zone III as per IS code and spectrum zone II as per Euro code for hard soil, medium soil and soft soil conditions. During analysis of tank the values of base moment, base shear, storey displacement and storey drift is being obtained and compared in both seismic zones for hard soil, medium soil and soft soil. Keywords: base shear, base moment, ETABS, elevated water tank.

A Study on Mass Irregularity Limits of RC Structures for Various Seismic Zones of India

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Mahammad Fayeemuddin ◽  
A. Vimala
Keyword(s):  
Aspect Ratio ◽  
Response Spectrum ◽  
Lateral Loads ◽  
Base Shear ◽  
Response Spectrum Analysis ◽  
Rc Structures ◽  
Seismic Zones ◽  
Regular Structures ◽  
Irregular Structures ◽  
Standard Code

The performance of any structure under lateral loads depends on its structural configuration. Most of the codes worldwide mentioned the provisions for the lateral load analysis for regular structures. Structures may be irregular in practice due to uneven distributions in mass, stiffness and strength. In India, most common type of multi-storied apartments constructed varies from 5 to 15 storeys and many apartments are constructed with penthouse which creates mass irregularity in the structures. The present study investigates the performance of mass irregular structures which are created by providing penthouse and also modeled as a stepped setback structure. Total four structures, 5, 7, 11 and 16 storied with an aspect ratio (height to width of the structure) of 0.64, 0.88, 1.36 and 1.96 are considered. For each structure response spectrum analysis is carried and the response parameters like storey displacements, storey drift and base shear variation in 4 seismic zones of India is studied. The main focus of the investigation is to understand the acceptance of mass irregularity with respect to the aspect ratio of the structure. The acceptance limit of the mass irregularity is also investigated as per 4 seismic zones of India. The results are compared with Indian standard code limits and concluded the acceptance limit as per seismic zones of India.

Wet-Joint Techniques for the Construction of Precast Concrete Pipe Rack Structures in Remote Seismic Zones

PCI Journal ◽  
2017 ◽  
Vol 62 (6) ◽  
Author(s):  
Marco Breccolotti ◽  
Massimo Federico Bonfigli ◽  
Valerio Colone ◽  
Annibale Luigi Materazzi ◽  
Bruno Pasqualini ◽  
...  
Keyword(s):  
Precast Concrete ◽  
Seismic Zones ◽  
Concrete Pipe

scholarly journals Comparison of Novel Seismic Protection Devices to Attenuate the Earthquake Induced Energy

Actuators ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 73
Author(s):  
Osman Hansu ◽  
Esra Mete Güneyisi
Keyword(s):  
Lateral Displacement ◽  
Time History ◽  
Seismic Protection ◽  
Base Shear ◽  
Seismic Demands ◽  
Nonlinear Time History Analyses ◽  
History Of ◽  
Protection Devices ◽  
Nonlinear Time History ◽  
Better Than

This study addresses an alternative use of viscous dampers (VDs) associated with buckling restrained braces (BRBs) as innovative seismic protection devices. For this purpose, 4-, 8- and 12-story steel bare frames were designed with 6.5 m equal span length and 4 m story height. Thereafter, they were seismically improved by mounting the VDs and BRBs in three patterns, namely outer bays, inner bays, and all bays over the frame heights. The structures were modeled using SAP 2000 software and evaluated by the nonlinear time history analyses subjected to the six natural ground motions. The seismic responses of the structures were investigated for the lateral displacement, interstory drift, absolute acceleration, maximum base shear, and time history of roof displacement. The results clearly indicated that the VDs and BRBs reduced seismic demands significantly compared to the bare frame. Moreover, the all-bay pattern performed better than the others.

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