Disease Analysis And Treatment of A Prestressed Concrete Continuous Curved Beam Bridge

2021 ◽  
Author(s):  
Xu Wei ◽  
Dong Peng
Keyword(s):  
Prestressed Concrete ◽  
Curved Beam ◽  
Beam Bridge ◽  
Disease Analysis

Extending span ranges and accelerating construction of spread slab beam bridges

2021 ◽  
Author(s):  
Dongqi Jiang
Keyword(s):  
Prestressed Concrete ◽  
Accelerated Bridge Construction ◽  
Span Length ◽  
Construction Operations ◽  
Concrete Panels ◽  
New Class ◽  
Low Profile ◽  
Speed Up ◽  
Beam Bridge ◽  
Precast Prestressed Concrete

<p>A new class of spread slab beam bridges has recently been developed and implemented in Texas. The research questions addressed in this paper are: how long can such a low profile bridge system span in either a simply supported or continuous form? And, can construction operations be accelerated, by design? An effective way to extend the span length is to utilize post-tensioning and to make the bridge continuous over several spans. In order to explore the maximum span limit, the design of a multi-span prestressed concrete spread slab beam bridge is investigated. In addition, a thicker and longer precast prestressed concrete panels (PCPs) that uses concentric pre-tensioned prestress is developed to facilitate accelerated bridge construction by reducing the need for field placement of deck reinforcement. It is shown that the span length may be extended from 15 m to 21 m as a continuous shallow profile bridge. The new solution for PCPs is verified to speed up field operations as compared to the traditional deck with stay-in-place PCPs and cast-in-place toppings.</p>

Construction of Fo Zhao Gui Dan Intercity Bridge Project in Guang Zhou

2014 ◽  
Vol 915-916 ◽  
pp. 133-136
Author(s):  
Xiang Hong Zhu ◽  
Zeng Bin Jiang
Keyword(s):  
Prestressed Concrete ◽  
Construction Method ◽  
Highway Bridge ◽  
Continuous Beam ◽  
Continuous Beam Bridge ◽  
Beam Bridge ◽  
The City

Construction of Fozhao intercity bridge in Guangzhou was a three-span prestressed concrete continuous beam bridge. The bridge adopted triangle hanging basket cantilever pouring construction method. The bridge mixed cable-stayed spans, H form tower and typical highway bridge elements. It spaned across the exiting transport hubs center, with modern and ethereal shape, and became a new landmark of the city.

Prestressed Concrete Continuous Beam Bridge Span Arrangement and Structure Size Proposed Analytical

2014 ◽  
Vol 496-500 ◽  
pp. 2516-2519
Author(s):  
Chun Hui Dong
Keyword(s):  
Prestressed Concrete ◽  
Limit State ◽  
Steel Beam ◽  
Live Load ◽  
Cross Sectional ◽  
Bridge Span ◽  
Continuous Beam Bridge ◽  
Stress And Deformation ◽  
Beam Bridge

By analyzing the bridge structure in the course of the dead load and live load, taking into account different load safety factor for load combinations that will limit state as a result of the combination of two kinds of forces calculated tendon force estimates, estimate the various sections of the steel beam, in accordance with certain requirements of the steel beam is a good layout, construction and consider re-simulate prestress for the role of the second combination, the process of the construction and use of a cross-sectional strength checking, stress and deformation checking checking.

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
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