Seismic Analysis and Design of INTZE Type Water Tank (original) (raw)
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IRJET- Seismic Performance Evaluation of Elevated Intze Water Tank by Using Finite Element Analysis
IRJET, 2020
Reinforced concrete elevated intze water tank are very important structures. They are considered as main lifeline elements during and after earthquakes. An intze tank behaves like an inverted pendulum which consists of huge water mass at the top of a slender staging. This is most critical consideration for the failure of the tank during earthquake. Basically, support system, so called staging is formed by a group of columns and horizontal braces providing at column. Staging is responsible for lateral resistance of complete structure. This analysis is carried by finite element method as intze tank subjected to seismic loading on zone 4 according to the Geographical Survey of India. Comparison of principle stresses and deflection for different filling condition is done for seismic and wind loading is done. The analysis can be performed for different type of water tank with different capacity. Same analysis can be performed for different seismic zone in India. This analysis can also be performed with using different storing material instead of water. Stresses are increase with increase the water level in tank due to FSI effect of fluid, stresses at tank full condition are found approximately double of the stresses in tank empty condition. Deflection are also increase with increase the water level in tank, Increments in stresses and deflections with increment of water level is very less in application of wind load, maximum stresses and deflection in different filling condition are almost same for wind loading.
IRJET, 2022
The high-end water tank is made of reinforced concrete A building of great importance. They are considered the main lifeline elements during and after the earthquake. Inze tank behavior Something like an inverted pendulum made of a huge mass of water at the top of lean staging. this is the most important Consideration of tank failure during an earthquake. Basically, the support system, the so-called staging, A group of columns and horizontal brackets that form a column. staging is fully responsible for lateral resistance structure. This analysis is performed by the finite element method as follows. intze tank seismic stress in zone 4 acc Geographic Survey of India. Comparison of principles different packing states of stress and deflection occur. Applying Earthquakes and wind loads . The analysis is The performs for different types of water tanks. capacity. You can run the same analysis for different earthquakes zone in India. This analysis can also be performed using different storage materials instead of water. Stress increases as water level rises The tank is due to the FSI effect of liquids, which causes stress when the tank is full. Found about twice the empty tank voltage on the state. As the amount of water increases, the deflection also increases. At the level in the tank, the stress increases and deflection occurs. The water level rises very little when the wind hits it Loads, Maximum Stresses and Deflections with Different Fillings The conditions are almost the same as for wind loads
IRJET- Elevated Water Tank Design and Seismic Study in Various Zones
IRJET, 2021
The need for water varies throughout the day. It changes from hour to hour. We need to store water in order to deliver a consistent volume of water. As a result, water tanks must be built to accommodate the public's need for water. They play a critical role in municipal water supply, firefighting systems, and a variety of other applications. In India, the Intze style of overhead water tank is widely used. The purpose of this research is to understand the behaviour of an overhead water tank responds to various loading situations during earthquakes. The Intze tank was designed using the IS:3370 part I (General Requirement) and Part II (Reinforced Concrete Structure) code of practice for concrete structures for liquid storage. In this research study the capacity of 250 m 3 intze tank has been constructed and studied using the response spectrum approach and SAP2000 is used to do the analysis. Seismic response parameters such as base shear, base moment, and tank displacement under empty and full conditions in seismic zones II, III, IV, and V were computed and the results were compared.
Seismic Analysis of Elevated Intze Type Water Tank
2019
As known from previous occurrences, Elevated water tanks were heavily damaged or collapsed during earthquakes. This might be due to lack of knowledge about seismic behaviour of water tank or improper geometrical selection of staging patterns. The staging plays critical role in design of water tanks as in water tanks large mass is supported by slender staging. The main objective of this study is to understand the seismic behaviour of tank under various staging patterns using SAP2000 software. In this paper different staging patterns considered are normal hexagonal bracing, hexagonal and cross bracing and hexagonal and radial bracings.
Seismic Behaviour of Intze Tank
In the Proceedings of Advances in Construction Materials and Structures (ACMS-2018), IIT Roorkee, Roorkee, Uttarakhand, India, 2018
Overhead water tanks are used for storing water in public water distribution system and large scale industries. In view of its economy and durability, Intze tank designs have been commonly used for decades. However, the current structural design of the tank is very much vulnerable to seismic loads. Thus, it is important to emphasize on the safety of such tanks against earthquakes. The present study investigates the different seismic parameters like base shear, base moments and displacements of joints obtained by analyzing the numerical model of tank for the seismic load by using both equivalent static method and response spectrum method on SAP2000. Further, the staging is provided with URM infills and the results obtained are compared. Consequently, enhancements in the structural design of the tank have been suggested to improve the performance against lateral loads.
HELIX, 2019
Water tank structures are of high importance as they act as a storage unit for basic necessity. During disasters it is very important that these do not fail and serve the purpose they are intended for. So it becomes very necessary that water tank is analyzed and designed for seismic and wind forces so that these structures do not fail under effect of Earthquake and Wind. Our study deals with seismic wind analysis w.r.t., Base shear, Seismic Zone, Response spectrum, Time Period of Intze water tank for different zones as per Indian Standards. Analysis has been carried out using Staad pro software.
Any design of Water Tanks is subjected to Dead Load + Live Load and Wind Load or Seismic Load as per IS codes of Practices. Most of the times tanks are designed for Wind Forces and not even checked for Earthquake Load assuming that the tanks will be safe under seismic forces once designed for wind forces. In this study Wind Forces and Seismic Forces acting on an Intze Type Water tank for Indian conditions are studied. The effect of wind on the elevated structures is of prime importance as Wind flows relative to the surface of ground and generates loads on the structures standing on ground. Most of the designers consider the wind effect and neglect the seismic effect on the structure. The Indian Standard Code IS 875(Part-3) 2003 and IS 1893-2000 for Wind & Seismic effect is used in this study. The Elevated Structure is designed for various Wind forces i.e. 39 m/s, 44 m/s, 47 m/s & 50 m/s and the same is cross checked with different Seismic Zones i.e. Zone-II, Zone-III, Zone-IV, & Zone-V by 'Response Spectrum Method' and the maximum governing condition from both the forces is further used for design & analysis of staging. It is found from the analysis that the Total load, Total moments and Reinforcement in staging i.e. Columns, Braces & also for Raft foundation varies for Case-1, Case-2, Case-3 & Case-4.
Seismic Analysis and Design of INTZ Water Tank by Using Staadpro
Water tank is used extensively for storage water, inflammable liquids, and other chemicals. The current analysis and design of supporting structures of elevated water tanks are extremely vulnerable under lateral forces due to wind and an earthquake, By past provided illustration when a great many water tank staging's suffered damage and a few collapses. The aim of this paper is to understand the behaviour of Elevated Water Tank with the framed staging in lateral earthquake loading using Indian code guidelines by using Staad Pro. By using Rapid Assessment of Seismic Safety of Elevated Water Tank gives the optimum value of Base Shear and Base Moment and hence it is economical. The design based on above gives the most economical section and also it is safe.
IAEME, 2019
Elevated WTs are used to store water in the public water supply system and they play a significant role in the seismic areas. The flaw in WTs might be due to a lack of water or problem with people to suppress the flames during seismic activity. The seismic activity caused various breakdowns such as the breakdown Protection of ground and lack of support to the stages. The aim of this paper is a Reaction spectrum analysis, seismic analysis and comparison of overhead Intze WT, circular WT, and rectangular WTs with unfilled, ½ filled and complete in earthquake 3rd & 5th field is done by implementing in STAAD Pro V8i SS6. These three categories of high circular, rectangular & Intze WTs of 450000 liters capacity holds up on RCC frame stages height 27 m under seismic activity loads according to outline code section 2 of IS 1893:2002.
Analysis of Intze Type Water Tank with Different Staging System & its Optimal Design
GRD Journals, 2019
Water storage structures are used to store water to tide over the daily requirement of water by localities, industries, campuses, towns, cities, etc. Especially elevated water tanks are used to supply water to a particular area so that the water can reach to the users by gravity and pressure. These elevated structures have large mass concentrated at the top and are behaving like a slender supporting structure, as an inverted pendulum. Hence, these structures are vulnerable to horizontal forces due to earthquake. From the very upsetting experiences of few earthquakes, like the 2001 Bhuj earthquake in India (Durgesh C. Rai 2003), RCC Elevated water tanks were heavily damaged or collapsed. This might be due to the lack of knowledge regarding the proper behavior of the staging part of the tank and due to dynamic effect and improper geometrical selection of staging. This paper deals with the analysis of different fame type staging patterns for RCC elevated tank (Intze type) with the help of STAAD Pro Vi8 (series 6) by using response spectrum method. In this paper, at first by studying the losses occurred in water tanks during past earthquakes and the reasons for these occurred damages, the analysis was done for different staging patterns to overcome these damages in these structure in coming future. It was determined while comparing different staging patterns that X type of frame staging have shown better seismic behavior to the resistance against lateral loads as they reduces most of displacement and time period but it increases the base shear due to the increase in volume of concrete.