Submit your paper : editorIJETjournal@gmail.com

Paper Title : Soil Interaction Effect OnRc Building With Different Types Of Foundations

ISSN : 2395-1303
Year of Publication : 2020
10.29126/23951303/IJET-V6I3P6

Authors: -Dr.Tushar G.Shende,Ms. Priyanka T. Raut

         


Abstract
- The process in which the response of the soil influences the motion of the structure and response of the structure influences the motion of the soil is known as Soil- Structure Interaction (SSI).The social economic damages caused by an earth quake depend to a great extent on the features of the strong ground motions, these motions reflect primarily from factors such as source characteristics, propagation wave path and local site conditions. In the normal design practice all will consider building frame as a fixed base but in actual case the flexible nature of soil allows the foundation for movement. Due to this the stiffness of the building frame get decreases thus increase in the natural time period of the structure and thus the overall response gets changed. Hence the present thesis work deals with the response of the building frame with Isolated and raft foundation under soil flexibility due to seismic behavior.

Reference
1. MeghnaModi, 2016In practice, conventional method of analyzing the structure is by applying its base as FIXED/HINGED. In conventional structural design, SSI effects are not considered. In the present paper, an attempt has been made to carry out a parametric study for analysis of 3 bays x 3 bays space frames will be analyzed. 2. Kuladeepu M N, 2015 In the present study the dynamic behavior of building frames over raft footing under seismic forces uniting soil structure interaction is considered. The analysis is carried out using FEM software SAP2000 *Ver14. For the interaction analysis of space frame, foundation and soil are considered as parts of a single compatible unit and soil is idealized using the soil models for analysis. 3. Dr. S.S. Patil, 2016In conventional method of design of raft foundation, base flexibility due to soil mass is ignored. The analysis carried out using Equivalent Static Method (ESM) in accordance with IS1893-2002. The soil flexibility is incorporated in the analysis by using Winkler approach ( Spring Model). SAP-2000 software. is used to model fixed base and flexible base. 4. Venkatesh M. B., 2017 Civil engineering structures such as building must have sufficient safety margin under dynamic loading like earthquake. The dynamic performance of a RCC building can be determined accurately that requires appropriate modeling considering foundation-soil, building-foundation and soil interactions. 5. M.N. Viladkar (1990) conducted SSI in plane frames using coupled Finite-Elements. In this case study, a beam bending element, which accounts for transverse shear deformation and axial-flexural interaction has been used for frame members and a combined footing which is treated on a part of the frame. A hyperbolic stress-strain model is used for the treatment of soil non-linearity. 6. VivekGarg (2012) conducted Interaction effect of space frame-strap footing -soil system on forces in superstructure. In this present work, RCC space frame footing-strap beam-soil system carried out to investigate in interaction behaviour of 3 storeys and 3 bay. Frame foundation soil is considered as linear elastic. 7. SaugataDasgupta (1999) determined the Effect of soil-structure interaction on building frames on isolated footings. In this study, the effect of these parameters on soil structure interaction is studied through the variation of axial force in column & change in differential settlement supported on isolated footing. 8. Sekhar Chandra dutta (2002) conducted A critical review on idealization & modelling for interaction among soil-foundation-structure system. This paper is review on different models of SSI, it draws conclusion that SSI should be considered in both static and dynamic loading. This paper helps to arrive at a suitable method of analysis by properly weighing the strength and limitation of the same against the particular characteristics and need the problem at hand. 9. JagadishponrajNadar., 2015 The conventional design procedure involves the assumption of the fixity at the base of the foundation and therefore, neglects of the flexibility of the foundation and the compressibility of the sub-soil.interaction is observed to be significant for the behavior of structure considered in the present study for all the cases considered. 10. Dange Swati., 2016In the present paper an attempt is made to understand the difference between the values of shear force values and bending moment values in fixed base support and spring base support by using SAP2000 software. 11. , it has been perceived that Soil Structure Interaction (SSI) changed the reaction attributes of a structural system due to huge and firm nature of structure and frequently, soil softness. In the current study, to depict the influence of soil structure interaction on the seismic response of a structure due to earthquake loading, a 5 storied (G+4) simple square building supported on pile foundation resting on stratified soil was selected. The building sections were modelled and analysed for different configurations (i.e., with and without slab and infill) using finite element method SAP2000. 12. JanardhanShanmugam 2015 The finite element based software program ANSYS is used for the purpose of analysis. The effect of different pile diameters on the response of superstructure is evaluated. The responses of the superstructure considered include storey displacements at respective storeys. 13. PreetiCodoori2017 Study of Soil-Pile interaction is an important consideration in evaluating the seismic performance of pile-group supported structures, particularly in soft clay or liquefiable soils. Additionally, dynamic deformations can also get induced within the structure due to the underneath soft soils. 14. Dheekshith K2016 In the current circumstances, an attempt is made to investigate the soil structure interaction when the erection is built on numerous under lying soil types. The structure, foundation and soils are modeled using 20 node solid 95 element in ANSYS software. The type of footing used in the study is isolated footing. Building is investigated under subsequent dissimilar situations. In this study, static nonlinear modal analysis is done under earthquake loading. The displacement or settlements in soil, Von Mises Stress developed is studied and compared. 15. Chinmayi H.K 2013 During earthquake the behavior of any structure is influenced not only by the response of the superstructure, but also by the response of the soil beneath. Structural failures in past have shown the significance of soil-structure interaction (SSI) effects. The present study focuses on SSI analysis of a symmetric 16 story RC frame shear wall building over raft foundation subjected to seismic loading. The transient analysis of structure-soil-foundation system is carried out using LS-DYNA software. Earthquake motion in time domain corresponding to zone III of IS 1893:2002 design spectrum is used to excite the finite element model of soil-structure system..

Keywords
Soil- Structure Interaction (SSI).Maximum Considered Earthquake (MCE)