Sesmic Comparitive Analysis for Isolated RCC Trapezoidal Footing resting over Black Cotton Soil

Abstract

During earthquake soil deforms under influence of incident seismic waves and dynamically carries with it foundation and support structures. There are various types of soil and various types of footing Thus it becomes important to study the behaviour of footing during earthquake in different soil. The main objective of the study is to understand the effect of sesmic forces on Isolated RCC Trapezoidal Footing resting over Black Cotton soil. Also from various litreature review study shows the point which are helpful to overcome damage in footing construction by showing different method, loading combination, sesmic effect, footing stability, etc. Thus the aim of following study is to carry out Sesmic Comparitive study for Isolated RCC Trapezoidal Footing resting over black cotton soil. The Isolated RCC Trapezoidal footing resting over Black Cotton soil having external loading (sesmic loading) is analyzed and design, The observations and remark shows that for the same geographical region when the lateral forces are induced in the footing , the development of moments, torsion and twising are developed . This brings the necessity to change the design of footing for resisting earthquake forces even if we consider Zone II . Since, the footing is most important part of load transfer path the detaling and consideration of earthquake force is necessary.

Introduction

I. INTRODUCTION

A. Aim

To Study Seismic comparitive analysis for Isolated RCC Trapezoidal footing resting over   Black Cotton soil.

B. Objectives

1. To Study various Soil condition
2. To Study construction property of Black Cotton Soil
3. To Study Types and function of footing
4. To study Indian Seismology
5. To Study effect of earthquake on RCC structures
6. To Study Sesmic analysis for Isolated Trapezoidal footing resting over black cotton soil.

C. Need                                                                                                                       

Earthquake is one of the most destructive of natural hazards. It is the sudden movement of earth cause due to the release of strain energy. It may causes various damages to buildings, earth surface, environment and life of common man. Thus, to minimize the effect of earthquake, foundation of structure is considered as more strongest element of overall building. There can be different types of foundation failure on soil due to movement and settlement which can cause building collapse & stability of foundation is depend upon the soil type available at foundation site. Hence, it is necessary to study the seismic stability of footing on various underlying soil and provide the safety as well.

II. LITERATURE REVIEW

Sneharika S. Shirbhate, et. al (1) Studied about the behavior of building components during earthquake over hilly terrain area and seismic characteristics such as displacement, storey drift, time period, base shear, etc. In addition to this twisting, torsion, short column effect are also studied. Generally, 27 degree sloping ground is more suitable & provide better stability on hilly terrain as compared to other building types.

Nagaraju, et. al (2) Analyzing and designing the RC building with various load combination under very high seismic zone(i.e. zone 5) and also make the comparison between manual method & software method to find which method is more suitable to increase the design quality, accuracy and strength

S. Balachandar, et. al (3) Studied over analysis of self wt. of footing with reference to safe bearing capacity, analysis of depth v/s reinforcement & comparative analysis of concentric square footing, eccentric one way square footing, eccentric both ways square footing and concluded that, self wt. of footing & depth of footing is depend on safe bearing capacity of soil. If depth of footing increases the reinforcement is decreases and all the footings which were design having the same data but reinforcement is gradually increased.

Prof. S.C. Gupta et al. (4), studied the behavior of flexible foundation using STAAD. Pro software. The study was done using a real life foundation problem of a G+3 storey school building. This paper shows a comparison of plate raft and the beam-slab raft by method of subgrade reaction of flexible foundation

Tarun Tiwari et al. (5), Studied on the effect of soil type for evaluating the seismic performance of footing. By using software STAAD PRO, finding the better technique to make the sensitivity of footing rested on different soil type and finally stated that, soil type which are available at foundation site effects the stability of foundation when subjected to earthquake waves

From the above tables we can conclude that when sesmic loads are considered there is increase in values of some of the design properties of footing and in some cases there is increase in depth of footing.

Conclusion

The study done over here is related to effect of seismic forces over the footing. The observations and remark shows that for the same geographical region when the lateral forces are induced in the footing , the development of moments, torsion and twising are developed . This brings the necessity to change the design of footing for resisting earthquake forces even if we consider Zone II . Since, the footing is most important part of load transfer path the detaling and consideration of earthquake force is necessary.

References

[1] Sneharika S. Shirbhate, Bhushan H. Shinde “Research Paper on Effect of Earthquake on RCC Building Over Hilly Terrain Area” International Journal for Research in Applied Science and Engineering Technology, ISSN: 2321-9653, Vol-05, Issue-06, June 2017 [2] V. Nagaraju, N. Vedakala, Y. Purnima, Ajay Kumar, Y Sudheer Babu “Analysis and Design of Multi-storey Building Under Load Combination” International Research Journal of Engineering and Technology, Vol-05, Issue-03, March 2018. [3] S. Balachandar, D. Narendra Prasad “Analysis and Design of Various Types of Isolated Footing” International Journal of Innovative Research in Science, Engineering and Technology, ISSN: 2319-8753, Vol-06, Issue-03, March 2017. [4] Prof. S. C. Gupta, Rahul Sharma “Comparative Study of Flexible Foundation” International Journal of Research in Advent Technology, Vol-6, Issue-7,July 2018, E- ISSN: 2311-9637. [5] Tarun Tiwari “The Effect of Soil Type on Isolated Footing During Earthquake” IJNRD, ISSN: 2456-4184, Vol-02, Issue-06, June 2017.

Copyright

Copyright © 2024 Dr. A. R. Gupta, Mr. Sahil M Dikkar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.