Soil Structure Interaction of R.C. Building with Basement Resting on Pile Raft Foundation

Abstract

Historically, Basements or underground stories were built in a castle to use as a dunged on oar store room. However, in modern construction, the restrain to go deeper below the grade level in term so basements which can be utilized for parking, shopping mall or combination of both. In such cases, dynamic soil properties have a significant effect of activating dynamic soil structure interaction phenomena on during earthquake. Here in present study an effort is made to study the behavior of a building by varying number so basements considering dynamic soil structure interaction. Issues like considering higher frequency modes, influence zone to be considered for dynamic soil structure interaction, behavior of building with basements under different water level conditions for two different types of layered soil and their comparison with fixed based structure is deal with. It is observed that dynamic soil structure interaction can significant change the behavior of the building and hence it is recommended to perform dynamic soil structure interaction for building with multiple basements. In addition, some important recommendations are provided at the end to serve as a guide for researchers and practicing engineers.

Introduction

I. INTRODUCTION

A. Present Scenario

In present scenario, there is a trend to go deeper below the grade level in terms of basements which can be utilized for parking, shopping malls or a combination of both. In such cases, the response of soil influences the motion of the structure and response of the structure influences motion of the soil which is known as soil structure interaction. As the structure and the soil are prevented to behave independently by the interaction, the convention a non-interaction analysis considering the base of the superstructure as fixed and the substructure designed to resist the seismic earth pressure in addition to seismic base shear and momentum and from the super structure results in either costly run safe design.

B. Need of the study

Under the Earthquake, in addition to the inertial interaction, building with basement may create kinematic interaction which needs to be evaluated. The behavior of high rise building with backstay effect may be different in presence and absence of soil which needs to be incorporated. Present methodology does not consider the resistance of side soil which seems logical but not considering the effect caused by shear wave in absence of soil resistance may prove dangerous under seismic event.

The performance of high rise building with basement resting on pile - raft foundation under seismic excitation considering soil structure interaction.

C.  Aim of the study

To study behaviour of High Rise building with basements considering soil structure interaction.

D. Objective of the study

To study the behavior of 30 story RC moment frame structural wall system building by varying basements based on IS 1893-2016 and IS 16700-2017.

To evaluate the dynamic soil properties, soil structure interactions performed by direct method for soft soil and medium soil.

II. LITERATURE REVIEW

A.  Overview

In this chapter, review of literature is presented for following:

Study the seismic behavior of underground structures.

Study the effect of concrete diaphragm wall founder ground structures.

Study the soil structure interaction phenomenon.

Study the seismic performance of buildings with basements.

(1)Title: A study on the effects of piled-raft foundations on the seismic response of a high rise

building resting on clayey soil,Soil Dynamics and Earthquake Engineering Publication Year:21 March 2021

Author: Hamid Reza Bolouri Bazz, Ali Akhtarpour, Abbas Karamodin Main aim of this journal is to find the behavior of a super structure with pile raft foundation in different cases which shows a deficiency in the general belief of the response of the structure.

(2)Title: Soil–basement interaction effects on the seismic response of tall buildings with basement Levels Publication Journal: Engineering Structures Publication Year:25 May 2022

Author: Francisco J. Pinto, Christian Ledezma, Jose A. Abell, Rodrigo Astroza, Shideh Dashti

 The need to build tall buildings has been increasing worldwide, creating new challenges in Earthquake engineering and design. Many of the current analysis methods cannot be extrapolated  beyond the definition under which they were established. Prior studies and existing seismic design guidelines have indicated that the current fixed-base hypothesis for evaluating the seismic response of structures is not sufficient to properly represent the boundary conditions and behaviour of tall buildings with basement levels. Studies of soil-structure interaction (SSI) for tall buildings have, however, typically been inconclusive.

III. METHODOLOGY

A. Flow Chart

This chapter discusses the flow of whole dissertation work. The work shows in different steps, starting from creating the geometry and ending with the results. The flowchart which illustrates these steps

B. Structural Layout

A G+30 storey building having total height of 91m having structural layout as showing figure 3.4 is considered for study

???????

Conclusion

In present study, SSI of RC building with basement resting on pile raft foundation is investigated. The three-dimensional analysis is performed for a 30 story RC moment frame-structural wall system having four and three basements. The buildings were assumed to be on two types of layered soil namely medium to hard and soft to medium soil. The dynamic analysis is performed in SAP 2000 by using nonlinear direction generation time history analysis under Bhuj earthquake. Upon studying several general cases like dynamic soil structure interaction without pore pressure, dynamic soil structure interaction with water level at ground level, water level below basement, water level having gradient around the structure and comparing their results with fixed base structure following major conclusion sare drawn: - Influence zone for performing dynamic soil structure interaction can be taken as five times the width of building in the direction considered. However, the depth of influence zone is to be decided by performing sensitivity analysis in a way that time period of entire soil structure system gets constant after that particular depth.

References

[1] A. A. Shawky, X. An and K. Maekawa, \"The Collapse Mechanism of a Subway Station during the Great Hanshin Earthquake, \"Cementand Concrete Composites, pp.241-257,1997. [2] C. Ma, D. Lu, X. Du and C. Qi, \"Effect of buried depth on seismic response of rectangular underground structures considering the influence of ground loss,\" Soil Dynamics and Earthquake Engineering, vol. 106,pp. 278-297, 2018. [3] H. Zhuang, J. Ren, Y. Miao, L. Jing, E. Yao and C. Xu, \"Seismic Performance Levels of a Large Underground Subway Station in Different Soil Foundations,\" Journal of Earthquake Engineering, 2019. [4] N. J. Jasmine and M. Muttharam, \"Deep Excavation Supported by Diaphragm Wall: A Case Study,\" IndianGeotechnicalJournal,2017. [5] H. Zhuang, R. Wang, P. Shi and G. Chen, \"Seismic response and damage analysis of underground structures considering the effect of concrete diaphragm wall,\" Soil Dynamics and Earthquake Engineering,vol.116, pp.278-288, 2018. [6] Z. Haiyang, Y. Jing, F. Jisai and C. Guoxin, \"Seismic performance of underground subway station considering connection modes and diaphragm wall\". [7] X. Lu, B. Chen, P. Li and Y. Chen, \"Numerical Analysis of Tall Buildings Considering Dynamic Soil-Structure Interaction,\" Journal of Asian Architecture and Building Engineering, 2002. [8] B. R. Jayalekshmi and H. K. Chinmayi, \"Effect of soil stiffness on seismic response of reinforced concrete buildings with shear walls,\"Innovative Infrastructure solutions, 2016. [9] H. J. Shah and A. K. Desai, \"Non Linear Time History Analysis of Tall Steel Tower Considering Soil Structure Interaction,\" International Journal of Engineering Research andTechnology,vol.6, no. 3, 2017 [10] V.Anand and S.S.Kumar,\" Seismic Soil-structure Interaction: A State-of-the-Art Review\". [11] M.Tehranizadeh and M.S. Barkhordari,\" Effect of Peripheral Wall openings in Basement and Number of Basement Floors on the Base level of Braced Framed Tube System,\"InternationalJournalofCivilEngineering,2017. [12] E. H. Ganainy and H. M. Naggar, \"Seismic performance of three-dimensional frame structures with underground stories,\" Soil Dynamics and Earthquake Engineering, vol. 29,pp. 1249-1261,2009. [13] S. Y. Jeong, T. H. J. K. Yoon and R. Klemencic, \"Seismic performance of tall building: Practical modeling of surrounding basement structures,\" Journal of Building Engineering, vol. 31,2020. [14] I. Chowdhury and S. P. Dasgupta, Dynamics of Structure and Foundation - A Unified Approach: 2. Applications, CRC Press, 2008. [15] N. P. Kurian, Design of Foundation Systems: Principles and Practices, Narosa Publication,2014. [16] J.Bowles, Foundation Analysis and Design,McGraw-HillEducation,2001. [17] P.Agarwal and M.Shrikhande,Earthquake Resistant Design of Structures, Prentice Hall India Learning Private Limited, 2006. [18] J. P. Wolf, Dynamic Soil-structure Interaction (Prentice-Hall International Series in Civil Engineering and Engineering Mechanics),Prentice Hall, 1985.

Copyright

Copyright © 2024 Mr. Ankur Kapuriya, Mr. Sagarkumar Naik, Mr. Adnan Bordiwala. 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.