WIND LOAD ANALYSIS OF TALL CHIMNEYS WITH PILED RAFT FOUNDATION CONSIDERING THE FLEXIBILITY OF SOIL

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JAYALEKSHMI B.R.; JISHA S.V.; SHIVASHANKARA A.R.

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Paper Information

Journal: INTERNATIONAL JOURNAL OF ADVANCED STRUCTURAL ENGINEERING Year:2015 | Volume:7 | Issue:2 Page(s): 95-115

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Title

WIND LOAD ANALYSIS OF TALL CHIMNEYS WITH PILED RAFT FOUNDATION CONSIDERING THE FLEXIBILITY OF SOIL

Author(s)

JAYALEKSHMI B.R. | JISHA S.V. | SHIVASHANKARA A.R. | Issue Writer Certificate

Keywords

PILED RAFT FOUNDATION

REINFORCED CONCRETE CHIMNEY

SOIL-STRUCTURE INTERACTION

WIND LOAD

Abstract

Soil-structure interaction (SSI) analysis was carried out for tall REINFORCED CONCRETE CHIMNEYs with PILED RAFT FOUNDATION subjected to WIND LOADs. To understand the significance of SSI, four types of soil were considered based on different material properties. Chimneys of different elevations and different ratios of height to base diameter of chimney were selected for the parametric study. The thickness of raft of PILED RAFT FOUNDATION was also varied based on different ratios of outer diameter to thickness of raft. The chimneys were assumed to be located in open terrain and subjected to a maximum wind speed of 50 m/s. The along-wind and across-wind loads were computed according to IS: 4998 (Part 1)-1992 and applied along the height of the chimney. The analysis was carried out using three-dimensional finite element technique based on the direct method of SSI. The linear elastic material behaviour was assumed for the integrated chimney-foundation-soil system. The radial and tangential moments, lateral deflection and base moment of chimney were evaluated through SSI analysis and compared with the response obtained from chimney with fixed base. The base moment of chimney considerably reduces due to the effect of SSI. It is found that the variation of different responses in chimney due to the effect of SSI depends significantly on the geometrical properties of chimney and foundations. The response variation at base for a distance of 1/40th of the height of chimney should be considered for a safe design.

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APA: Copy

JAYALEKSHMI, B.R., JISHA, S.V., & SHIVASHANKARA, A.R.. (2015). WIND LOAD ANALYSIS OF TALL CHIMNEYS WITH PILED RAFT FOUNDATION CONSIDERING THE FLEXIBILITY OF SOIL. INTERNATIONAL JOURNAL OF ADVANCED STRUCTURAL ENGINEERING, 7(2), 95-115. SID. https://sid.ir/paper/319797/en

Vancouver: Copy

JAYALEKSHMI B.R., JISHA S.V., SHIVASHANKARA A.R.. WIND LOAD ANALYSIS OF TALL CHIMNEYS WITH PILED RAFT FOUNDATION CONSIDERING THE FLEXIBILITY OF SOIL. INTERNATIONAL JOURNAL OF ADVANCED STRUCTURAL ENGINEERING[Internet]. 2015;7(2):95-115. Available from: https://sid.ir/paper/319797/en

IEEE: Copy

B.R. JAYALEKSHMI, S.V. JISHA, and A.R. SHIVASHANKARA, “WIND LOAD ANALYSIS OF TALL CHIMNEYS WITH PILED RAFT FOUNDATION CONSIDERING THE FLEXIBILITY OF SOIL,” INTERNATIONAL JOURNAL OF ADVANCED STRUCTURAL ENGINEERING, vol. 7, no. 2, pp. 95–115, 2015, [Online]. Available: https://sid.ir/paper/319797/en

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