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FCE Public Lecture
Recent Developments of Geosynthetic-Reinforced Column-Supported Embankments over Soft Soils
by Prof. Jie Han
Abstract
In recent years, columns, such as vibro-concrete columns, deep mixed columns, stone columns, rammed aggregate piers, geosynthetic-encased columns, and composite columns, etc., have been increasingly used to support embankments when they cross soft soils, approach bridges, and are widened and/or elevated. Geosynthetics have been used to bridge over the spacing of columns and/or encase the columns to enhance load transfer from soil to columns and reduce total and differential settlements. However, the geosynthetic-reinforced column-supported embankments have presented a complicated geotechnical problem in terms of soil-column-geosynthetic interactions and design of this system. This presentation will discuss load transfer platforms and column technologies, address design issues, and shed light on recent research and developments related to the geosynthetic-reinforced column-supported embankments over soft soils including soil arching and load transfer mechanisms, settlement, consolidation, and stability. Case studies will be presented at the end of this presentation.
About the Speaker
Dr Jie Han is a professor in geotechnical engineering at Department of Civil, Environmental & Architectural Engineering at the University of Kansas, USA. He received his Ph.D. degree from Georgia Institute of Technology in 1997 and then worked as the manager of technology development at Tensar Earth Technologies, Inc. from 1997 to 2001. His research focuses on geosynthetics, ground improvement, pile foundations, and pavement design. He has published more than 200 technical papers on journals and conference proceedings. He has been involved in research and consulting of a number of ground improvement techniques including stone columns, deep soil mixing, dynamic compaction, geosynthetic reinforcement, etc. Dr Han is a registered professional engineer in Georgia, USA and a member of a number of technical committees and editorial boards including ASCE Geo-Institute Geosynthetics Committee and Ground Improvement Committee, ASCE Journal of Geotechnical & Geoenvironmental Engineering, International Journal for Geomechanics, and the technical co-chair for the ASCE GeoFrontiers 2011 Conference. He is the recipient of 2011 Shamsher Prakash Annual Prize for Excellence in the Practice of Geotechnical Engineering.
Date: 21 Mar 2014 (Fri)
Time: 4:00p.m. to 5:00p.m.
Venue: Room Z4-040, The Hong Kong Polytechnic University
ProfessorCivil, Environmental & Architectural Engineering (CEAE) Department
The University of Kansas
All Interested Are WelcomePlease register online at http://www.polyu.edu.hk/fce/events/20140321_lecture/For enquiries, please contact Miss Vivian Hui at Tel: 3400-3407 | Email: [email protected]: Free of Charge．．
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Please note that both the start and the end of the lecture may be delayed (including the Q & A time). The Faculty will only distribute certificates to participants after the lecture is over, as signified by the presentation of a souvenir to the speaker. Certificates of attendance will only be provided to participants if they stay for the whole lecture.Certificates of attendance will not be provided to participants who are late for 10 minutes or longer, or leave before the lecture is finished. The Faculty reserves the right of final decision in any disputes over the issuance of certificates of attendance.
An attendance certificate will be issued to each registered participant.Priority will be given to current members of the Alumni Associations under the Faculty of Construction and Environment. Please send a copy of your membership card to [email protected] for verification. Applicants (including members of Alumni Associations) with confirmed registration who fail to turn up may be put on lower priority in the registration for the future faculty lectures.
