Author: Gabriela BrambilaPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Field Monitoring and Numerical Analysis of Two Illinois Integral Abutment Bridges
Author: Gabriela BrambilaNumerical and Field Data Analysis of Integral Abutment Bridges
Author: Beth Ann WrightIntegral Abutment Bridges Under Thermal Loading
Author: James M. LaFavePublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 75
Book Description
Monitoring of Integral Abutment Bridges and Design Criteria Development
Author: Jeffrey A. LamanPublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 620
Book Description
The objective of this project was to revise and make more accurate integral abutment bridge design criteria based on observed structural behavior and results of numerical parametric studies. Observed behaviors were on the basis of field monitoring conducted at 4 integral abutment bridge sites and a weather station utilizing previously installed instrumentation and data acquisition systems. Integral abutment bridge engineering data were continuously collected over the entire contract period at bridges 109, 203, 211, and 222 and compiled, processed and evaluated. Numerical parametric studies were conducted on the basis of 2D and 3D finite element models, developed and calibrated to the observed integral abutment behavior, in order to evaluate the field performance of integral abutments and establish the range of potential applications for integral abutment bridge construction in Pennsylvania.
Experimental and Analytical Study of Integral-abutment Bridges
Author: Brad Harold SayersPublisher:
ISBN:
Category :
Languages : en
Pages : 518
Book Description
Integral-abutment bridges eliminate the expansion joints that are generally used to accommodate bridge length changes due to daily and annual temperature variations. Additional stresses and displacements due to the thermal loading are induced in these indeterminate structures that are not typically associated with bridge structures supported on pins and rollers. The goal of this research was to determine the effects of the thermal loading on two integral-abutment bridges. Extensive field monitoring was conducted on two, in-service, skewed, integral-abutment bridges located in central Iowa. The experimental program included long-term monitoring of longitudinal and transverse abutment displacements, relative displacements of the superstructure over the pier caps, strains in selected steel HP-shaped piles supporting the abutments, strains in several PC girders, bridge member temperatures, and end fixity of selected piles and girders in the abutments. The experimental temperature and displacement data was used to calibrate an ANSYS, finite-element model for each of the two monitored bridge structures. Experimental strains were verified and maximum strains due to the thermal loading were predicted for various members using the finite-element models.
Monitoring of Integral Abutment Bridges and Design Criteria Development
Author: Jeffrey A. LamanPublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 620
Book Description
The objective of this project was to revise and make more accurate integral abutment bridge design criteria based on observed structural behavior and results of numerical parametric studies. Observed behaviors were on the basis of field monitoring conducted at 4 integral abutment bridge sites and a weather station utilizing previously installed instrumentation and data acquisition systems. Integral abutment bridge engineering data were continuously collected over the entire contract period at bridges 109, 203, 211, and 222 and compiled, processed and evaluated. Numerical parametric studies were conducted on the basis of 2D and 3D finite element models, developed and calibrated to the observed integral abutment behavior, in order to evaluate the field performance of integral abutments and establish the range of potential applications for integral abutment bridge construction in Pennsylvania.
Integral Abutment Bridges Under Thermal Loading
Author: James M. LaFavePublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 67
Book Description
Thermal Behavior of IDOT Integral Abutment Bridges and Proposed Design Modifications
Author: Scott Michael OlsonPublisher:
ISBN:
Category : Bridges
Languages : en
Pages :
Book Description
The Illinois Department of Transportation (IDOT) has increasingly constructed integral abutment bridges (IABs) over the past few decades, similar to those in many other states. Because the length and skew limitations currently employed by IDOT have not necessarily been based on rigorous engineering analyses, an extensive 3-D parametric study has been performed, complemented by installation of field monitoring equipment on two recently constructed bridges, to potentially expand the use of IABs in Illinois.
Long-Term Behavior of Integral Abutment Bridges
Author: Robert J. FroschPublisher: Joint Transportation Research Program
ISBN: 9781622600120
Category :
Languages : en
Pages : 149
Book Description
Integral abutment (IA) construction has become the preferred method over conventional construction for use with typical highway bridges. However, the use of these structures is limited due to state mandated length and skew limitations. To expand their applicability, studies were implemented to define limitations supported by rational analysis rather than simply engineering judgment. Previous research investigations have resulted in larger length limits and an overall better understanding of these structures. However, questions still remain regarding IA behavior; specifically questions regarding long-term behavior and effects of skew. To better define the behavior of these structures, a study was implemented to specifically investigate the long term behavior of IA bridges. First, a field monitoring program was implemented to observe and understand the in-service behavior of three integral abutment bridges. The results of the field investigation were used to develop and calibrate analytical models that adequately capture the long-term behavior. Second, a single-span, quarter-scale integral abutment bridge was constructed and tested to provide insight on the behavior of highly skewed structures. From the acquired knowledge from both the field and laboratory investigations, a parametric analysis was conducted to characterize the effects of a broad range of parameters on the behavior of integral abutment bridges. This study develops an improved understanding of the overall behavior of IA bridges. Based on the results of this study, modified length and skew limitations for integral abutment bridge are proposed. In addition, modeling recommendations and guidelines have been developed to aid designers and facilitate the increased use of integral abutment bridges.
Behavior of Integral Abutment Bridges
Author: Christine BonczarPublisher:
ISBN:
Category : Bridge approaches
Languages : en
Pages : 226
Book Description
This project investigated the seasonal behavior of integral abutment bridges through field monitoring and finite element modeling (FEM). The Orange-Wendell Bridge was used as a case study for the project. The structure was instrumented with 85 gages measuring bridge movements and forces (temperature gages, joint meters, tilt meters, strain gages, earth pressure cells, thermistors and four inclinometer casings for manual readings). Instruments were monitored by the University of Massachusetts at Amherst from January 2002 through December 2004. Both 2-D and 3-D FEM of the bridge were developed using GTSTRUDL and calibrated to the field data. Parametric FEM was performed to evaluate the influence of soil properties and construction practices on bridge behavior.