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SUMMARY:Behaviour of As-welded and Grouted Tubular X-joints Subjected to I
 n-Plane Bending - Professor Yoo Sang CHOO (National University of Singapor
 e)
DTSTART:20090311T140000Z
DTEND:20090311T150000Z
UID:TALK17033@talks.cam.ac.uk
CONTACT:Nami Norman
DESCRIPTION:Abstract:\nTubular X-joints are used extensively in leg assemb
 lies of jack-up platforms and jacket structures.   As a result of Hurrican
 es Katrina and Rita in 2005\, existing platforms will be required to resis
 t significantly higher loads with associated demand on the critical tubula
 r members and joints.   For older platforms\, there is a corresponding nee
 d to retrofit crucial joints to ensure adequate fatigue capacity.\n\nThis 
 presentation will highlight results of a comprehensive experimental and nu
 merical investigation on the effect of strengthening the chord with high s
 trength grout (with compressive strength of 210 MPa) on the reduction of h
 ot spot stresses and corresponding enhancement in static strength of tubul
 ar X-joints.   The numerical results are found to be in close agreement wi
 th those obtained from the four experimental tests\, with a reduction of 3
 0% for the critical hot spot stress for the grout-reinforced joint.     Th
 e strength enhancement of the grouted joint was up to 2.6 times that of th
 e as-welded simple joint.\n\nAbout the speaker:\nProfessor Yoo Sang CHOO i
 s currently President of The Institute of Marine Engineering Science & Tec
 hnology (IMarEST).  He was mentored by Professor Michael Horne in Universi
 ty of Manchester.  He has served in many scientific or technical committee
 s of international organizations and conferences\, and hosted as Chairman 
 or Co-Chairman for some of these conferences.  He served as President of S
 ingapore Structural Steel Society from 1992 to 1994.  He is member of Edit
 orial Board for three international journals\, and member of International
  Institute of Welding Sub-commission XV-E: Tubular Structures and member o
 f Technical Committee III.1: Ultimate Strength in International Ships and 
 Offshore Structures Congress.\nProfessor Choo has received a number of int
 ernational and national recognitions\, including ISOPE Awards\, Stanley Gr
 ay Award\, IES Prestigious Engineering Achievement Award\, James Watt Meda
 l and Stanley Gray Medal.  Professor Choo was conferred the Honorary Fello
 wship of Singapore Structural Steel Society in 2004 in recognition of his 
 technical expertise and contributions in Offshore and Structural Engineeri
 ng.  He has served as technical consultant in major offshore projects\, an
 d participates in international joint industry projects.\n
LOCATION:Engineering Department -**LR5**
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