Evaluation of Transverse Tie Rods in a 50-Year-Old Adjacent Prestressed Concrete Box Beam Bridge

2017 ◽  
Vol 22 (3) ◽  
pp. 05016010 ◽  
Author(s):  
Eric P. Steinberg ◽  
Ali A. Semendary
Keyword(s):  
Prestressed Concrete ◽  
Box Beam ◽  
Beam Bridge ◽  
Tie Rods

An Adjusting Method for the Suspender Force of Continuous Beam Arch Combination Bridge Based on Influence Matrix

2013 ◽  
Vol 275-277 ◽  
pp. 1082-1085 ◽  
Author(s):  
Han Bing Liu ◽  
Long Lin Wang ◽  
Guo Jin Tan ◽  
Yong Chun Cheng
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Numerical Model ◽  
Iterative Algorithm ◽  
Prestressed Concrete ◽  
Continuous Beam ◽  
Influence Matrix ◽  
Box Beam ◽  
Beam Bridge ◽  
Composite Box Beam

Based on a project of a 22+55+22m continuous composite box beam bridge made of prestressed Concrete, using influence matrix, Numerical Simulation and Iterative Algorithm, an adjusting method for suspender force of continuous beam arch combination bridge has been proposed. It uses Finite Element Numerical Model to calculate the influence matrix and Iterative Algorithm to calculate the suspender force. When rely on this project, the error could be under 0.05% through finite iterative algorithm. And the feasibility has been tested in the completed bridge. It turns out that the error of the measured suspender force of the completed bridge is smaller than that in the design.

Practical assessment of magnetic methods for corrosion detection in an adjacent precast, prestressed concrete box-beam bridge

2013 ◽  
Vol 28 (2) ◽  
pp. 99-118 ◽  
Author(s):  
Bertrand Fernandes ◽  
Michael Titus ◽  
Douglas Karl Nims ◽  
Al Ghorbanpoor ◽  
Vijay Kumar Devabhaktuni
Keyword(s):  
Prestressed Concrete ◽  
Corrosion Detection ◽  
Box Beam ◽  
Magnetic Methods ◽  
Beam Bridge ◽  
Precast Prestressed Concrete

Construction Monitoring of Prestressed Concrete Continuous Beam Bridge

2014 ◽  
Vol 919-921 ◽  
pp. 308-312
Author(s):  
Cong Qi Li ◽  
Wen Jie Ge ◽  
Da Fu Cao ◽  
Bi Yuan Wang
Keyword(s):  
Prestressed Concrete ◽  
Beam Deflection ◽  
Practical Significance ◽  
Continuous Beam ◽  
Construction Monitoring ◽  
Long Span Bridges ◽  
Box Beam ◽  
Continuous Beam Bridge ◽  
Cantilever Construction ◽  
Beam Bridge

The creep of concrete structure has a prodigious effect on bridge alignments and the stress control during the bridge construction. In the meantime, the problems such as pre-stress losses, bearing asymmetry sink ,the concrete box-beam deflection, box-beam web cracks, structure stress redistributing and so on, which make the bridge structure lose functions or even invalid early when it works. For these reasons, the construction monitor of the deformation and the long-term deflection of long-span bridges with high piers have important practical significance. Construction monitoring of prestressed concrete continuous beam bridge - new Tongyang canal bridge which adopt cantilever construction work is made.

Simulation of Composite Strengthening Technique in Prestressed Concrete Continuous Box Beam Bridges

2012 ◽  
Vol 238 ◽  
pp. 723-727
Author(s):  
Hong Bo Jiao ◽  
Shuang Hua He
Keyword(s):  
Prestressed Concrete ◽  
Bridge Engineering ◽  
Steel Plates ◽  
Engineering Practice ◽  
Three Dimension ◽  
Reinforced Polymer ◽  
Box Beam ◽  
Analysis Technique ◽  
Strengthening Technique ◽  
Beam Bridge

The damage features of concrete continuous box beam bridges are summarized combined with three prestressed concrete continuous box beam bridges on ZhengLuo highway. There are four common strengthening methods in bridge engineering practice, i.e. bonded steel plates, strengthening with R.C, carbon fiber reinforced polymer (CFRP) and external prestressed strands. By numerical analysis technique of three dimension finite element (3D FE), the stresses of the damaged bridge are compared with the results of the strengthened one which is strengthened by one of the former methods. The strengthening effectiveness of those methods is ascertained. Therefore, the composite strengthening technique (CST) is established, which is effective to improve the bearing capacity and crack resistance of the strengthened bridge. An optimal strengthening process is put forward in the paper. So the CST is reasonable and effective to strengthen a damaged prestressed concrete continuous box beam bridge, which provides a significant reference for other similar strengthening projects.

Sign in / Sign up

Export Citation Format

Share Document