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Soil-Structure Interaction Analysis of a Raft Foundation Supporting RC Chimney

Dixit, Shilpa / Vedula, Srinivasa Phanikanth / Kakaraparthi, Srinivas

Foundations supporting superstructure need to be designed for the reactions due to wind/seismic loads in addition to dead load, imposed load of the superstructures. In case of tall structures like chimneys, the base moments will be high and hence need to be checked for both maximum and minimum bearing pressures and ensure that the safe bearing pressure is not exceeded and also the possible uplift if any is limited to the guidelines suggested by the codes. In the present study, a foundation raft supporting 60 m high RCC ventilation stack is analyzed for various load combinations. The effects of soil-structure interaction have been considered in the detailed finite element analysis carried out. Soil-structure interaction (SSI) effects in both static and dynamic case with and without embedment effects are considered. In the foundation design, uncertainties in SSI are also accounted. The results obtained for various aspects mentioned above have been discussed.

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Soil-Structure Interaction Analysis of a Raft Foundation Supporting RC Chimney

Dixit, Shilpa / Vedula, Srinivasa Phanikanth / Kakaraparthi, Srinivas

Foundations supporting superstructure need to be designed for the reactions due to wind/seismic loads in addition to dead load, imposed load of the superstructures. In case of tall structures like chimneys, the base moments will be high and hence need to be checked for both maximum and minimum bearing pressures and ensure that the safe bearing pressure is not exceeded and also the possible uplift if any is limited to the guidelines suggested by the codes. In the present study, a foundation raft supporting 60 m high RCC ventilation stack is analyzed for various load combinations. The effects of soil-structure interaction have been considered in the detailed finite element analysis carried out. Soil-structure interaction (SSI) effects in both static and dynamic case with and without embedment effects are considered. In the foundation design, uncertainties in SSI are also accounted. The results obtained for various aspects mentioned above have been discussed.

Soil-Structure Interaction Analysis of a Raft Foundation Supporting RC Chimney

Dixit, Shilpa / Vedula, Srinivasa Phanikanth / Kakaraparthi, Srinivas

Foundations supporting superstructure need to be designed for the reactions due to wind/seismic loads in addition to dead load, imposed load of the superstructures. In case of tall structures like chimneys, the base moments will be high and hence need to be checked for both maximum and minimum bearing pressures and ensure that the safe bearing pressure is not exceeded and also the possible uplift if any is limited to the guidelines suggested by the codes. In the present study, a foundation raft supporting 60 m high RCC ventilation stack is analyzed for various load combinations. The effects of soil-structure interaction have been considered in the detailed finite element analysis carried out. Soil-structure interaction (SSI) effects in both static and dynamic case with and without embedment effects are considered. In the foundation design, uncertainties in SSI are also accounted. The results obtained for various aspects mentioned above have been discussed.

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Title:

Soil-Structure Interaction Analysis of a Raft Foundation Supporting RC Chimney

Additional title:

Lecture Notes in Civil Engineering

Contributors:

Latha Gali, Madhavi (editor) / Raghuveer Rao, P. (editor) / Dixit, Shilpa (author) / Vedula, Srinivasa Phanikanth (author) / Kakaraparthi, Srinivas (author)

Published in:

Geohazards ; Chapter: 18 ; 259-282

Lecture Notes in Civil Engineering ; 86

Publication date:

2020-08-14

Size:

24 pages

ISBN:

978-981-15-6233-4 , 978-981-15-6232-7

ISSN:

2366-2565 , 2366-2557

DOI:

https://doi.org/10.1007/978-981-15-6233-4_18

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Soil-structure interaction , Ventilation stack , Uncertainty analysis , Raft foundation Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Building Construction and Design , Solid Construction

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