Dynamic Behavior of Multi-laned Skewed Highway Bridge Under Moving Loads
Author: Abbes Yala
Publisher:
Published: 1986
Total Pages: 128
ISBN-13:
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Author: Abbes Yala
Publisher:
Published: 1986
Total Pages: 128
ISBN-13:
DOWNLOAD EBOOKAuthor: Wade H. Shafer
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 386
ISBN-13: 1461573912
DOWNLOAD EBOOKMasters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thougtit that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 31 (thesis year 1986) a total of 11 ,480 theses titles trom 24 Canadian and 182 United States universities. We are sure that this broader base tor these titles reported will greatly enhance the value ot this important annual reterence work. While Volume 31 reports theses submitted in 1986, on occasion, certain univer sities do re port theses submitted in previousyears but not reported at the time.
Author: Gopinath Venkatesan
Publisher:
Published: 2009
Total Pages: 456
ISBN-13:
DOWNLOAD EBOOKAuthor: Don Albert Linger
Publisher:
Published: 1960
Total Pages: 115
ISBN-13:
DOWNLOAD EBOOKIn the design of highway bridges, the static live load is multiplied by a factor to compensate for the dynamic effect of moving vehicles. This factor, commonly referred to as an impact factor, is intended to provide for the dynamic response of the bridge to moving loads and suddenly applied forces. Many investigators have published research which contradicts the current impact formula 1, 4, 17. Some investigators feel that the problem of impact deals not only with the increase in over-all static live load but that is an integral part of a dynamic load distribution problem 24. The current expanded highway program with the large number of bridge structures required emphasizes the need for investigating some of the dynamic behavior problems which have been generally ignored by highway engineers. These problems generally result from the inability of a designer to predict the dynamic response of a bridge structure. Many different investigations have been made of particular portions of the overall dynamic problem. The results of these varied investigations are inevitably followed by a number of unanswered questions. Ironically, many of the unanswered questions are those which are of immediate concern in the design of highway bridges, and this emphasizes the need for additional research on the problem of impact.
Author: Sanjay Baburao Gurav
Publisher:
Published: 2006
Total Pages: 182
ISBN-13: 9781109963489
DOWNLOAD EBOOKMoving loads have great effect on dynamic stresses in structures and cause them to vibrate extensively, especially at high velocities. A peculiar feature of moving loads is that they are variable in both space and time. This is why the dynamic analysis of bridges under moving forces has attracted researchers worldwide. When a moving load is traveling on a bridge, different factors play an important role in the vibrations of the bridge. Road surface profile, vehicle dynamics, weight and speed of the moving vehicle and the geometry of the bridge all play important roles in the analysis. The main objective of this research work is to study the collective effect of all these factors over the impact factor.
Author: Robert J. Reilly
Publisher:
Published: 1966
Total Pages: 68
ISBN-13:
DOWNLOAD EBOOKAuthor: Teoktistos Yorgi Toridis
Publisher:
Published: 1961
Total Pages: 150
ISBN-13:
DOWNLOAD EBOOKAuthor: Shabnam Darjani
Publisher:
Published: 2013
Total Pages: 164
ISBN-13:
DOWNLOAD EBOOKThrough the development and usage of high-strength materials, the design of more flexible bridges is unavoidable. It is assumed that limiting a bridge static deflection would control the excessive vibration caused by more flexible design. However, results of prior studies indicate that deflection limits do not necessarily address bridges vibrational issue. This dissertation addresses the parameters affecting bridge vibration and provides simple equations to compute bridge dynamic acceleration, velocity and displacement in both transient and steady state parts of the vibration. These equations can then be used to control bridges excessive vibration; and provide human comfort and structural performance. A comprehensive analytical study was performed to evaluate dynamic response of bridges under a moving truck load. The effect of bridge dynamic parameters and vehicle moving conditions are investigated, which includes bridge frequency, damping ratio, span length, girders distance, bracing, support conditions, truck speed, load sequence, axle's weight, and number of spans. Bridge and vehicle k-parameters, which represent the number of vibration cycles before the next excitation occurs, are developed to better explain the vibrational behavior of a bridge. The proposed equations include bridge frequency, static deflection for one axle load, and k-parameters. Finally, a case study is presented to highlight the application of the new approach.
Author: Robert K. Wen
Publisher:
Published: 1962
Total Pages: 62
ISBN-13:
DOWNLOAD EBOOKAuthor: Robert Kuo-Liang Wen
Publisher:
Published: 1957
Total Pages: 236
ISBN-13:
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