5 edition of Evaluation of post-tension strengthened steel girder bridge using FRP bars found in the catalog.
Evaluation of post-tension strengthened steel girder bridge using FRP bars
Terry J. Wipf
by Center for Transportation Research and Education, Iowa State University in Ames, IA
Written in English
|Statement||co-principal investigators, Terry J. Wipf, Brent M. Phares ; investigator, F. Wayne Klaiber.|
|Series||CTRE project -- 01-99, CTRE management project -- 01-99.|
|Contributions||Phares, Brent M., Klaiber, F. W., Iowa. Dept. of Transportation., Iowa State University. Center for Transportation Research and Education., Iowa State University. Bridge Engineering Center., United States. Federal Highway Administration.|
|LC Classifications||TG335 .W57 2003|
|The Physical Object|
|Pagination||ix, 71 p. :|
|Number of Pages||71|
|LC Control Number||2004438356|
Bridge Maintenance, Safety, Management, Resilience and Sustainability contains the lectures and papers presented at The Sixth International Conference on Bridge Maintenance, Safety and Management (IABMAS ), held in Stresa, Lake Maggiore, Italy, July, Assessment of the Existing Formulations to Evaluate Shear-Punching Strength in RC Slabs with FRP Bars Without Transverse Reinforcement. Pages Realistic Shear Capacity Evaluation Using Arch Action Model. Pages Study on Renewal Method from Deteriorative RC Slab to Precast PC Slab in the Steel Girder Bridge.
Annex L: Strengthening of concrete structures using external post-tensioning page 3 straight or draped using deviators depending on the particular requirements. Various profiles can be adopted to suit the required combination of axial load and bending as shown in Figure 1 (Xanthakos ). Cable combinations can also be Size: KB. Post-Tensioning for Slab Bridge Pound MATERIALS Comply The Post-Tension Manufacturer shall supply the special reinforcement, such as spirals or grids, for the box girder bridges that were designed and constructed according to AASHTO LRFD Construction Size: KB.
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Many state, county, and local agencies are faced with deteriorating bridge infrastructure composed of a large percentage of relatively short to medium span bridges.
In many cases, these older structures are rolled or welded longitudinal steel stringers acting compositely with a reinforced concrete deck.
Most of these bridges, although still in service, need some level of strengthening due to. Evaluation of Post-tension Strengthened Steel Girder Bridge Using FRP Bars CTRE Project 7. Author(s) 8. Performing Organization Report No. Terry J. Wipf, Brent M. Phares, F.
Wayne Klaiber, and Yoon-Si Lee 9. Performing Organization Name and Address. In one case, a bridge was strengthened using CFRP post-tensioning bars. In the other case, a bridge was strengthened by installing CFRP plates to the bottom flange of girders.
Post-tensioned box girder bridge Figure 5. Girder with a constant c.g.c. and a concentric c.g.s. at both ends Similarly, referring to Figs. 1 & 5, the angle of the slope of the c.g.s.
line at a distance of x = 3 m from the left end of the girder can be computed using Eqs. (2) & (3): tan 1 y T 3 c =» ¼ º «¬ ª 12m 1 (12) 2(3m) tan 4(0.
Examination of Post-Tensioned Steel Bridges in Indiana 5. Report Date July 6. Performing Organization Code 7. Author(s) post-tensioned with high-strength steel tendons. This bridge, which is part of the I Indiana Toll Road, is located in Elkhart County, Indiana. Measure strain distributions in steel girder G1 at location 2 Cited by: 1.
This paper deals with strengthening and repairing of an existing steel box girder bridge by using post tensioned cables.
The bridge crosses the river Nile in Sherbeen city near Mansoura, Dakahlia. weight, structural efficiency, ease of fabrication, low maintenance etc. In order to compete with steel bridge systems, the design of PC I-girder Bridge system must lead to the most economical use of materials.
In this paper, cost optimization approach of a post-tensioned PC I-girder bridge system is presented. The objective isFile Size: KB. A computer spreadsheet application was specifically developed for this investigation.
It is capable of analysis, design, and cost evaluation of the superstructure for a cast-in-place post-tensioned box girder bridge.
Optimal design of a post-tensioned box girder is achievable by Author: Byungik Chang, Kamal Mirtalaei, Seungyeol Lee, Kenneth Leitch. Design and Construction of a Bridge Deck using Mild and Post-Tensioned FRP Bars by R. Fico, N. Galati, A. Prota, and A.
Nanni Synopsis: The type of structure selected for this research project is a four-span continuous concrete slab having GFRP bars for top and bottom mats and CFRP reinforcement for internal by: 3.
The bridge was total length of 57 metres and 3 metres wide (maximum width in the middle is 6 metres). Figure 5: Pedestrian Bridge with Large Eccentricity Post-tensioning Tendons In this structure, the external tendons are placed below the girder in the mid span region by means of steel struts, the function of which is similar to a by: 6.
Devices for CF Sheet Post-Tension Strengthening for Steel Bridge Girder Hironori NAMIKI (Kyobasi Mentec Co.,Ltd), Mototsugu TANAKA (Kyoto University), Hiroaki OZASA (Kyoto University), Masaki HOJO (Kyoto University), Toshiyuki KITADA, and Masahide MATSUMURA The 6th Chine-Japan-US Joint Conference on Composite Materials, pp, June One bridge of each type was instrumented with strain gages and deflection transducers.
Field tests, using loaded trucks of known weight and configuration, were conducted on the bridges with the bolts in the tight condition and after implementing the bolt loosening retrofit to measure the effects of.
The Post-Tensioned Box Girder Design Manual was developed as a part of the FHWA project Advancing Steel and Concrete Bridge Technology to Improve Infrastructure Performance. Brian Kozy and Reggie Holt tensioned box-girder bridge using a three-span continuous bridge as an Size: KB.
Book Description. Bridge Maintenance, Safety, Management, Resilience and Sustainability contains the lectures and papers presented at The Sixth International Conference on Bridge Maintenance, Safety and Management (IABMAS ), held in Stresa, Lake Maggiore, Italy, July, This volume consists of a book of extended abstracts ( pp) and a DVD ( pp) containing the full papers of.
Meier U. highlights that the steel rebars fail before the FRP post-strengthening, as can be seen in Figure 9 that shows the steel rebars of a post-strengthened concrete beam after a fatigue failure. However, cyclic loads can also damage the adhesive and affect the interface concrete-adhesive and adhesive-FRP, leading to premature by: 2.
PCI Bridge Girders are widely used for any construction of bridge, wharf, flyover and many other Bridge girdrs have two types: Pre - tensioned girders and post - tensioned girders. In pre tensioned girders, prestressing in carried out first then after that the fresh concrete poured In post-tensioned girder, the strand conduits arrangement is carried out first and then.
Post-Tensioned Concrete Haunched Slab Bridge User’s Manual availability of such construction technology before ruling out the post-tension (P/T) option for bridges over deep channels.
The same concern should be checked for overpasses over (RCSH, prestressed girder, steel girder, etc.). II.4 Substructure Design. Figure Application of epoxy in Bridge Girder Figure Crack in Girder Figure Strengthening with external post-tensioning Figure First prestressed concrete bridge Figure Bridge at Aue: External Prestressed bars of the drop-in span Figure Klockestrand Bridge near Stockholm, Sweden.
Because the post-tensioning of a bridge girder in a long multi-span bridge can take place at a concrete age between and days, when an appreciable amount of shrinkage has already occurred, an accurate account of the incremental shrinkage strain from the time of post-tensioning is as important as that of the ultimate shrinkage by: 1.
al.. presented a research strengthening of steel girder bridges using FRP in August In May Nazir,  presented a research on pre-stressed arch steel bridge.
The objective of this paper is to recognize the suitable technique in strengthening steel frames by. States. Higher levels of post-tension ing are used in Japan than is the gen eral practice in the United States. In the following sections, various design approaches of typical precast, prestressed concrete box girder bridges are discussed.
A proposed de sign is also presented. The design combines the performance require.Concrete Structures Chapter 5 WSDOT Bridge Design Manual M Page July 6.
Class W Used underwater in seals. 7. Class or Higher Used in CIP post-tensioned concrete box girder construction, deep bridge foundations, or in other special structural applications if significant economy can be gained or structural requirements.Closed hoops with cross-ties (No.
4 bars at in. spacing) are provided in the beam-to-wall contact regions to confine the concrete. The strength of the beam confined concrete, estimated using a model developed by Mander et al. (), is equal to fcc= ksi with an ultimate strain at crushing of εccu= A A lb = 90 in.
section at A-A.