INTEGRATED ANALYTICAL AND
EXPERIMENTAL STUDIES
FOR THE EVALUATION OF RC STRUCTURES
Technology Transfer
Discussions between Englekirk and USC led to the conclusion that one of the most
effective
technology transfer vehicles is to conduct a graduate level course on the
understanding of how
reinforced concrete behaves and how it can be designed to withstand earthquakes.
This course
content is more specific than the general and fundamental treatments of
reinforced concrete design
and it requires these fundamental subjects as prerequisites. It is also different
than the
practitioner's reliance on the code requirements which often make no mention of
performance
behavior of the structural system. The course is directed to practicing
engineers, and it utilizes
the research information that has been developed at USC and by other
institutions. The Syllabus
of this course is given below. Lecture notes arising from this course
disseminated for reference by
those attending the course as well as others in the profession.
The class given during the 1993-1994 academic year was attended by 12 students
all of whom
were enthusiastic about the material presented. Six students were from practice;
the others were
graduate USC students. It is planned to offer the source again next academic
year. A
late-afternoon period will be selected to offer practicing engineers a more
convenient time to
attend the course.
In Addition, Professor Agbabian will continue his activities in technology
transfer with emphasis
on the use of high-strength concrete in building applications in Southern
California and other
seismically active regions. He will also continue to develop implementation
procedures for the use
of the study results on high strength concrete in building codes and procedures
through
interactions with relevant building officials and practicing structural
engineers.
By way of background for this technology transfer activities, we cite here the
communication
targets:
-
Building Code Development
Professional Organizations
Interaction with researchers in other research centers
Publication of papers and reports
Publication of Papers and Reports
There are already important contributions that are available in the report that
can be written up as papers for publication. Several papers and reports were
prepared. Presentations were made at the ACI convention. Please click HERE to see details of some publications.
Here is a partial list of publications supported in part by the C4 project:
Technical Papers
- M.S. Agbabian, E.M. Higazy, A.M. Abdel-Ghaffar and A.S. Elnashai,
- "Effect of Axial Column Load on the Shear Performance of RC Beam-to-Column
Connections", presented at the ACI spring convention, Vancouver, British
Columbia,
March-April, 1993.
- M.S. Agbabian, E.M. Higazy, A.M. Abdel-Ghaffar and A.S. Elnashai,
- "Experimental Observations on the Seismic Shear Performance of RC
Beam-to-Column
Connections Subjected to Varying Axial Column Force", Journal of
`Earthquake Engineering and Structural Dynamics', Vol 23 No.8, August 1994,
pp.859-877.
- M.S. Agbabian, E.M. Higazy and A.S. Elnashai, "Experimental Seismic Response
- Characteristics of Marginal Strength Concrete Beam-Column Connections",
Accepted for
Presentation and Publication at the International Concrete Conference in Odense,
Denmark, June 1994.
- E.M. Higazy and M.S. Agbabian, "Seismic Performance of Marginal High Strength
- Reinforced Beam-Column Connections Subjected to Reduced Column Compression",
accepted for
publication in ASCE 95-96.
- S.F. Masri, M.S. Agbabian, A.M. Abdel-Ghaffar, E.M. Higazy, R.O. Claus, and
- M.J. de Vries, (1993), "An Experimental Study of Embedded Fiber-Optic Strain
Gauges in
Concrete Structures," Published to ASCE/Engineering Mechanics Journal, Vol. 120
No.8, August 1994, pp.1694-1717.
- R.O. Claus, M.J. de Vries, S.F. Masri and E.M. Higazy, (1993), "Application
of
- Embedded Optical Fiber Sensors to Monitoring of Fatigue Loading of Reinforced
Concrete
Cross-Beams," Presented at OFS-9 Conference on Optical Fiber Sensors, 4-6 May
1993,
Florence, Italy.
- S.F. Masri and R.O. Claus, (1993), "Developments in Actuators and Sensors for
- Structural Response Under Seismic and Dynamic Loads," Presented at the
U.S.-Japan
Seminar on Experimental Methods in Earthquake Engineering, Ilikai Hotel,
Honolulu, Hawaii, 28
June - 1 July. (Submitted for publication in Earthquake Spectrum).
- S.F. Masri and A.G. Chassiakos, (1992), "Some Issues in the Identification of
- Structural Systems through the Use of Neural Networks," Proceedings of the
International
Workshop on Safety Evaluation Based on Identification Approaches Related to Time
Variant and
Nonlinear Structures, Lambrecht, Germany, 6-9 September 1992.
- S.F. Masri, A.G. Chassiakos and T.K. Caughey, (1992), "Identification of
- Nonlinear Dynamic Systems Using Neural Networks," ASME Journal of Applied
Mechanics, Vol 60, March 1993, pp 123-133.
- J.C. Anderson, V.V. Bertero and E. Miranda, "Seismic Response Analysis of the
- Pacific Park Plaza Building," Proceedings, Second Conference on Tall
Buildings in Seismic
Regions, Los Angeles, CA, May, 1991.
- E. Miranda, J.C. Anderson and V.V. Bertero, "Seismic Response of a
Thirty-Story
- Building During the Loma Prieta Earthquake," Proceedings, Second Conference
on Tall
Buildings in Seismic Regions, Los Angeles, CA, May, 1991.
- J.C. Anderson, E. Miranda, V.V. Bertero and Kajima Research Team, "Evaluation
- of the Seismic performance of a Thirty-Story RC Building," UCB/EERC-91/16,
Earthquake
Engineering Research Center, University of California, Berkeley, CA July, 1991,
254 pp.
- V.V. Bertero, E. Miranda and J.C. Anderson, "Evaluation of Seismic Response
of
- Two RC Buildings," Proceedings, Tenth Structures Congress, ASCE, April, 1992.
- J.C. Anderson, V.V. Bertero and E. Miranda, "Seismic Design Criteria and
- Measured Response," Proceedings, Tenth Structures Congress, ASCE, April,
1992.
- J.C. Anderson and M.S. Agbabian, "Seismic Analysis of a 16 Story Building in
- Armenia," Proceedings, Tenth World Conference on Earthquake Engineering
Madrid, Spain,
July, 1992.
Technical Reports
- J.C. Anderson and W. Chen, "A Seismic Redesign of the Thirty Story S-K
- Building," Report No. CE 93-05, Department of Civil Engineering, University
of Southern
California, Los Angeles, March, 1993, 126 pp.
- J.C. Anderson and V.V. Bertero, "Lesson Learned from Instrumented Building
- Response," Proceedings, 1993 National Earthquake Conference, Memphis, May,
1993.
- J.C. Anderson and M.S. Agbabian, "Seismic Analysis of Two Lift Slab Buildings
in
- Armenia," Report No. 93-06, Dept. of Civil Engineering, University of
Southern California,
Los Angeles, CA, April, 1993, 83 pp.
- J.C. Anderson and W. Chen, "Design and Behavior of Two High Rise RC Building
- Systems for Earthquakes," Report No. 93-07, Dept. of Civil Engineering,
University of
Southern California, Los Angeles, CA, June, 1993, 191 pp.
- C.W. Synolakis, R.M. Leahy and Z. Zhou, Multiresolution 3-D Internal
- Displacements Estimation from 3-D Computer Tomographic Images, Department of
Civil
Engineering, University of Southern California, Report No. CE93-05, June 1993.
- R.L. Nigbor, Structural Health Monitoring Using Distributed Sensors, A Report
on
- Research Supported in Part by the National Science Foundation and The
Carpenters/Contractors Co-operation Committee Inc., Report No. M92213, June 1993.
- S.F. Masri and A.G. Chassiakos, Some Issues in the Identification of
Structural
- Systems through the use of Neural Networks, A Report on Research Supported in
Part by
the National Science Foundation and The Carpenters/Contractors Co-operation
Committee Inc.,
Report No. M9205, June 1993.
- S.F. Masri, M.S. Agbabian, A.M. Abdel-Ghaffar, E. Higazy, R.O. Claus and M.J.
- de Vries, An Experimental Study of Embedded Fiber-Optic Strain Gauges in
Concrete
Structures, A Report on Research Supported in Part by the National Science
Foundation and The
Carpenters/Contractors Co-ope4ration Committee Inc., Report No. M9213, June 1993.
- S.F. Masri, A.G. Chassiakos and T.K. Caughey, Identification of Nonlinear
- Dynamic Systems Using Neural Networks: Part I - Formulation; Part II -
Application, A
Report on Research Supported in Part by the National Science Foundation and The
Carpenters/Contractors Co-operation Committee Inc., Report No. M930a, June 1993.
- E.M. Higazy, A.M. Abdel-Ghaffar and A.S. Elnashai, "Seismic Performance of
- Interior Beam-Column Subassemblages in Multistory RC Structures", USC-Report,
June
1993.
The USC research team is publishing reports and technical papers in which
research
accomplishments are being highlighted. These reports will inform the interested
academic and
practicing professionals about accomplishments, unresolved issues, and plans for
the further
research. The principal recipients of these progress reports will be the expanded
membership of
the Advisory Committee, other research teams at universities and institutes, and
chairmen of
ASCE, ACI, SEAOC and EERI committees.
REMARKS
Technology Transfer is an ongoing process. It is an essential role for the
research engineer.
Typically, the university research engineer publishes his/her work in technical
journals with the
expectation that his work will find interested readers. Technology transfer by
the practicing
profession takes a different approach. This is done primarily in technical
committees which spend
thousands of person hours deliberating on the implications of accepting or
rejecting procedure, a
criterion, or a design and analysis guideline. This demarcation line between
university researcher
and practicing professional is often crossed by both academic and practicing
professionals. It is
the crossing of this demarcation line that activates an exchange that provides a
distinct benefit for
safe and economical design of reinforced concrete structures.
It is USC's goal to provide technology transfer as an on going effort in parallel
with the research
that is undertaken under the C4 grant. Technology transfer through reports,
publications,
presentations at conferences, and interaction with professional committees will
be timed to
disseminate the results of the research in a timely manner as various phases of
the research
program are completed.
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Julie Young
jlyoung@vivian2.usc.edu