Evaluation and Repair Procedures for Precast/Prestressed Concrete Girders with Longitudinal Cracking
تاريخ : یکشنبه ۱ اسفند ۱۳۸۹
منبع : ايران سازه
Evaluation and Repair Procedures for Precast/Prestressed Concrete Girders with Longitudinal Cracking in the Web
Author: Maher K. Tadros, Sameh S. Badie, Christopher Y. Tuan | Size: 5.43 MB | Format: PDF | Publisher: TRB | Year: 2010 | pages: 76 | ISBN: 9780309118354
http://www.4shared.com/document/2eB7S-HJ/nchrp_rpt_654.html
http://www.filesonic.com/file/97913881/nchrp_rpt_654.pdf
Author: Maher K. Tadros, Sameh S. Badie, Christopher Y. Tuan | Size: 5.43 MB | Format: PDF | Publisher: TRB | Year: 2010 | pages: 76 | ISBN: 9780309118354
Systematic,
well-designed research provides the most effective approach to the
solution of many problems facing highway administrators and engineers.
Often, highway problems are of local interest and can best be studied by
highway departments individually or in cooperation with their state
universities and others. However, the accelerating growth of highway
transportation develops increasingly complex problems of wide interest
to highway authorities. These problems are best studied through a
coordinated program of cooperative research. In recognition of these
needs, the highway administrators of the American Association of State
Highway and Transportation Officials initiated in 1962 an objective
national highway research program employing modern scientific
techniques. This program is supported on a continuing basis by funds
from participating member states of the Association and it receives the
full cooperation and support of the Federal Highway Administration,
United States Department of Transportation. The Transportation Research
Board of the National Academies was requested by the Association to
administer the research program because of the Board’s recognized
objectivity and understanding of modern research practices. The Board is
uniquely suited for this purpose as it maintains an extensive committee
structure from which authorities on any highway transportation subject
may be drawn; it possesses avenues of communications and cooperation
with federal, state and local governmental agencies, universities, and
industry; its relationship to the National Research Council is an
insurance of objectivity; it maintains a full-time research correlation
staff of specialists in highway transportation matters to bring the
findings of research directly to those who are in a position to use
them. The program is developed on the basis of research needs identified
by chief administrators of the highway and transportation departments
and by committees of AASHTO. Each year, specific areas of research needs
to be included in the program are proposed to the National Research
Council and the Board by the American Association of State Highway and
Transportation Officials. Research projects to fulfill these needs are
defined by the Board, and qualified research agencies are selected from
those that have submitted proposals. Administration and surveillance of
research contracts are the responsibilities of the National Research
Council and the Transportation Research Board. The needs for highway
research are many, and the National Cooperative Highway Research Program
can make significant contributions to the solution of highway
transportation problems of mutual concern to many responsible groups.
The program, however, is intended to complement rather than to
substitute for or duplicate other highway research programs
http://ifile.it/rcay7ql
http://www.4shared.com/document/2eB7S-HJ/nchrp_rpt_654.html
http://www.filesonic.com/file/97913881/nchrp_rpt_654.pdf
ارسال توسط حسن فراهانی
آخرین مطالب
