Abstract
Three dimensional soil–structure interaction (SSI) analyses of tall reinforced concrete chimneys with annular raft foundation subjected to wind loads are presented in this paper. Different ranges of height and slenderness ratios of the chimneys and different ratios of external diameter to thickness of the annular raft were selected for the parametric study. To understand the significance of SSI, four types of soils were considered based on the stiffness. The chimneys were assumed to be located in terrain category two and subjected to a maximum wind speed of 50 m/s as per IS:875 (Part 3)-1987. The along-wind and across-wind loads were computed according to IS:4998 (Part 1)-1992. The linear elastic behavior was assumed for the integrated chimney-foundation-soil system and it was analysed using finite element software ANSYS based on direct method of SSI. The radial and tangential moments and settlement of annular raft foundation were evaluated through SSI analysis and compared with that obtained from conventional method of analysis as per IS:11089-1984, assuming foundation system is rigid. From the analysis, it is concluded that the SSI analysis results in higher radial moments and lesser tangential moments as compared to conventional method. All these variations depend on the geometric properties of chimney and annular raft foundations.
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References
Manohar SN (1985) Tall chimneys: design and construction. Tata MacGraw-Hill, New Delhi
ACI (307-2008) (2008) Code requirements for reinforced concrete chimneys (ACI 307-08) and commentary. American Concrete Institute, Farmington Hills
Koten HV (2005) Wind actions. In: Zurich (ed) The CICIND chimney book: industrial chimneys of concrete or steel. CICIND, Paris, pp 99–114
IS:4998(Part 1)-1992 (Reaffirmed 2003) Criteria for the design of reinforced concrete chimneys. Bureau of Indian Standards, New Delhi
Davenport AG (1967) Gust loading factors. J Struct Eng (ASCE) 93:1295–1313
Simiu E (1976) Equivalent static wind loads for tall building design. J Struct Eng (ASCE) 102:719–737
Solari G (1982) Along-wind response estimation: closed form solution. J Struct Eng (ASCE) 108:225–234
Menon D, Rao PS (1997) Estimation of along wind moments in RC chimneys. Eng Struct 19(1):71–78
Menon D, Rao PS (1997) Uncertainties in codal recommendations for across wind analysis of RC chimneys. J Wind Eng Ind Aerodyn 72:455–468
Vickery BJ, Clark AW (1972) Lift or across-wind response of tapered stacks. J Struct Eng (ASCE) 98(ST 1):1–20
Kwok KCS, Melbourne WH (1981) Wind induced lock in excitation of tall structures. J Struct Eng (ASCE) 107(1):57–72
Davenport AG (1995) How can we simplify and generalize wind loads. J Wind Eng Ind Aerodyn 54–55:657–669
Melbourne WH (1997) Predicting the cross-wind response of masts and structural members. J Wind Eng Ind Aerodyn 69–71:91–103
Chu KH, Afandi OF (1966) Analysis of circular and annular slabs for chimney foundations. J ACI 63:1425–1447
Brown PT (1969) Numerical analysis of uniformly loaded circular rafts on deep elastic foundations. Geotechnique 19:399–404
Melerski ES (1990) Simple computer analysis of circular rafts under various axisymmetric loading and elastic foundation conditions. Proc Inst Civil Eng D 2(89):407–431
IS:11089-1984 (Reaffirmed 2002) Code of practice for design and construction of ring foundation. Bureau of Indian Standards, New Delhi
Baidya DK, Sridharan A (2002) Foundation vibration on layered soil system. Ind Geotech J 32(3):235–257
Dasgupta SP, Kallam S (2006) Vibration of an elastic halfspace under rectangular loading. Ind Geotech J 36(2):86–114
Pour NS, Chowdhury I (2008) Dynamic soil structure interaction analysis of tall multi- flue chimneys under aerodynamic and seismic force. In: The 12th international conference on IACMAG, India, pp 2696–2703
Chore HS, Ingle RK (2008) Interaction analysis of building frame supported on pile group. Ind Geotech J 38(4):483–501
Jayalekshmi BR, Menon D, Prasad AM (2011) Effect of soil-structure interaction on along-wind response of tall chimneys. IACMAG 2:846–851
Clough R, Penzien J (1993) Dynamics of structures. McGraw-Hill, New York
Wolf JP (1985) Dynamic soil-structure interaction. Prentice-Hall, USA
Chowdhury I, Dasgupta SP (2002) Earthquake response of soil-structure system. Ind Geotech J 32(3):309–328
Chowdhury I, Dasgupta SP (2009) Dynamics of structure and foundation—a unified approach. CRC Press, Netherlands
Rajasankar J, Iyer NR, Swamy BY, Goplalakrishnan N, Chellapandi P (2007) SSI analysis of a massive concrete structure based on a novel convolution/deconvolution technique. Sadhana 32:215–234
Tabatabaiefar HR, Massumi A (2010) A simplified method to determine seismic responses of reinforced concrete moment resisting building frames under influence of soil–structure interaction. Soil Dyn Earthq Eng 30:1259–1267
Cakir T (2013) Evaluation of the effect of earthquake frequency content on seismic behaviour of cantilever retaining wall including soil-structure interaction. Soil Dyn Earthq Eng 45:96–111
NEHRP (1994) Recommended provisions for seismic regulations of new buildings Part1-provisions (FEMA 222A). NEHRP, Washington
Bowles JE (1997) Foundation analysis and design. McGraw-Hill, Singapore
Ghosh S, Wilson EL (1969) Dynamic stress analysis of axi-symmetric structures under arbitrary loading. Report no. EERC 69-10. University of California, Berkeley
Sáez E, Caballero FL, Razavi AMF (2011) Effect of the inelastic dynamic soil–structure interaction on the seismic vulnerability assessment. Struct Saf 33:51–63
IS:875 (Part 3)-1987 (Reaffirmed 2003) Code of practice for design loads (other than earthquake) for building and structures. Bureau of Indian Standards, New Delhi
IS:1904–1986 (Reaffirmed 2006) Code of practice for design and construction of foundations in soils: general requirements. Bureau of Indian standards, New Delhi
Ta LD, Small JC (1997) An approximate analysis of raft and piled raft foundations. Comput Geotech 20:105–123
Lin DG, Feng ZY (2006) A numerical study of piled raft foundations. J Chin Inst Eng 29:1091–1097
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Jisha, S.V., Jayalekshmi, B.R. & Shivashankar, R. 3D Soil–Structure Interaction Analyses of Annular Raft Foundation of Tall RC Chimneys Under Wind Load. Indian Geotech J 44, 409–426 (2014). https://doi.org/10.1007/s40098-013-0095-x
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DOI: https://doi.org/10.1007/s40098-013-0095-x