Effects of lateral cycling of monopiles in soft clay

James Doherty, Barry Lehane, Pauline Truong

Research output: Contribution to conferenceConference presentation/ephemera

Abstract

The accumulation of lateral displacement of monopiles under lateral cycling over the life of a wind turbine is a major design consideration. This paper presents the results from centrifuge tests on instrumented piles installed in kaolin prepared to an overconsolidation ratio of 2; the tests involved both monotonic loading and two separate one-way cyclic loading histories. It is shown that the geotechnical ultimate limit state is relatively un-affected by cycling but that large permanent rotations occur during cycling, even at a relatively modest cyclic load ratios.
Original languageEnglish
Publication statusPublished - 2017
EventASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017 - Trondheim, Norway
Duration: 25 Jun 201730 Jun 2017

Conference

ConferenceASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017
CountryNorway
CityTrondheim
Period25/06/1730/06/17

Fingerprint

Cyclic loads
Kaolin
Centrifuges
Wind turbines
Piles
Clay

Cite this

Doherty, J., Lehane, B., & Truong, P. (2017). Effects of lateral cycling of monopiles in soft clay. Paper presented at ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017, Trondheim, Norway.
Doherty, James ; Lehane, Barry ; Truong, Pauline. / Effects of lateral cycling of monopiles in soft clay. Paper presented at ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017, Trondheim, Norway.
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Doherty, J, Lehane, B & Truong, P 2017, 'Effects of lateral cycling of monopiles in soft clay' Paper presented at ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017, Trondheim, Norway, 25/06/17 - 30/06/17, .

Effects of lateral cycling of monopiles in soft clay. / Doherty, James; Lehane, Barry; Truong, Pauline.

2017. Paper presented at ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017, Trondheim, Norway.

Research output: Contribution to conferenceConference presentation/ephemera

TY - CONF

T1 - Effects of lateral cycling of monopiles in soft clay

AU - Doherty, James

AU - Lehane, Barry

AU - Truong, Pauline

PY - 2017

Y1 - 2017

N2 - The accumulation of lateral displacement of monopiles under lateral cycling over the life of a wind turbine is a major design consideration. This paper presents the results from centrifuge tests on instrumented piles installed in kaolin prepared to an overconsolidation ratio of 2; the tests involved both monotonic loading and two separate one-way cyclic loading histories. It is shown that the geotechnical ultimate limit state is relatively un-affected by cycling but that large permanent rotations occur during cycling, even at a relatively modest cyclic load ratios.

AB - The accumulation of lateral displacement of monopiles under lateral cycling over the life of a wind turbine is a major design consideration. This paper presents the results from centrifuge tests on instrumented piles installed in kaolin prepared to an overconsolidation ratio of 2; the tests involved both monotonic loading and two separate one-way cyclic loading histories. It is shown that the geotechnical ultimate limit state is relatively un-affected by cycling but that large permanent rotations occur during cycling, even at a relatively modest cyclic load ratios.

UR - https://www.asme.org/events/omae2017/program#/track/detail/241

M3 - Conference presentation/ephemera

ER -

Doherty J, Lehane B, Truong P. Effects of lateral cycling of monopiles in soft clay. 2017. Paper presented at ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017, Trondheim, Norway.