Studies on geometric control mechanism of constructional process of cantilever casting for large-span continuous box-girder bridge

2011 ◽  
Author(s):  
Jun Dong ◽  
Hui Lin ◽  
Qingwei Wu ◽  
Xuejian Xiang
Keyword(s):  
Control Mechanism ◽  
Geometric Control ◽  
Box Girder ◽  
Large Span ◽  
Box Girder Bridge ◽  
Girder Bridge

Construction Monitoring Technology for Large-Span PC Continuous Box-Girder Bridge with Corrugated Steel Webs

2014 ◽  
Vol 1065-1069 ◽  
pp. 865-869
Author(s):  
Zhao Cai Liu ◽  
Lin Jie Hou ◽  
Can Hua Chang ◽  
Chong Hui Zhou ◽  
Shui Wan
Keyword(s):  
Field Measurements ◽  
Box Girder ◽  
Construction Monitoring ◽  
Large Span ◽  
Element Simulation ◽  
Single Room ◽  
Design Requirements ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
And Control

Through the construction monitoring of a large-span bridge which is a single box single room PC continuous box-girder bridge with corrugated steel webs, suitable methods are summed up. Finite element simulation was combined with field measurements data to calculate the model elevation of construction. By adjusting and control the model elevation, the linear shape of the bridge met the design requirements. By collecting strain data of the key sections of the bridge, abnormalities that may exist could be detected timely so that early warning could be made and construction safety and quality could be ensured.

Effects Analysis of Web Cracks on Long-Term Deformation of Large Span Pre-Stressed Concrete Continuous Box Girder Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 1207-1212 ◽  
Author(s):  
Fei Shao ◽  
Da Rong Pan ◽  
Feng Li ◽  
Ya Wen Liu
Keyword(s):  
Sustainable Development ◽  
Common Disease ◽  
Inclined Crack ◽  
Box Girder ◽  
Large Span ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
The Web ◽  
Inclined Cracks

Excessive deflection and its long-term sustainable development has become a common disease of large span pre-stressed concrete continuous box girder bridge, but the causes of it is difficult to reach consensus. A three-spans continuous pre-stressed concrete box girder bridge is studied in this paper. The web inclined cracks near L/4 of the continuous girder bridge is simulated by FEM (finite element method), in order to explore the influences of web inclined cracks near L/4 on the overall deflection of the bridge and the effect differences of the crack width, length and numbers. The results show that when the web inclined cracks reach a certain level, it will cause a long-term sustainable development of the deflection of the bridge. Therefore, web inclined crack is the main factor that causes the sustainable development of long-term deflection of large span pre-stressed concrete continuous box girder bridges.

Rehabilitation of the Boivre Viaduct - A Multispan Prestressed Box Girder Bridge

PCI Journal ◽  
1986 ◽  
Vol 31 (3) ◽  
pp. 22-47 ◽  
Author(s):  
Charles C. Zollman ◽  
Serge H. Barbaux
Keyword(s):  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

scholarly journals The Analysis of Thermal Effect on Concrete Box Girder Bridge

2015 ◽  
Vol 111 ◽  
pp. 470-477 ◽  
Author(s):  
Lukáš Krkoška ◽  
Martin Moravčík
Keyword(s):  
Thermal Effect ◽  
Box Girder ◽  
Concrete Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

Structural Response of Skew RC Box Girder Bridge

1982 ◽  
Vol 108 (1) ◽  
pp. 89-104
Author(s):  
Alexander C. Scordelis ◽  
S. Tanvir Wasti ◽  
Frieder Seible
Keyword(s):  
Structural Response ◽  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

Vehicle Weight Estimation Using Wireless Accelerometers on a Steel-Box Girder Bridge

2019 ◽  
Author(s):  
Tomonori Nagayama ◽  
So Kato ◽  
Haoqi Wang ◽  
Di Su ◽  
Mayuko Nishio
Keyword(s):  
Weight Estimation ◽  
Box Girder ◽  
Vehicle Weight ◽  
Efficient Management ◽  
Weigh In Motion ◽  
Speed Fluctuation ◽  
Drive Speed ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Steel Box Girder Bridge

<p>While the traffic loads need to be understood toward efficient management of bridges, the loads on each bridge are not well assessed. An easy‐to‐implement vehicle weight estimation technique toward Bridge Weigh‐In‐Motion (BWIM) is developed based on wireless accelerometers; the algorithm is studied for the application to ordinary road bridges where traffic speed is not necessarily high and drive speed fluctuation is not insignificant. The method uses only accelerometers installed on the girders, decreasing installation cost and time which typical BWIM systems based on strain measurement need. A measurement system consisting of battery operated wireless sensors is employed. The system can continue to work over weeks to assess the vehicle weigh distributions of days of a week. The system is installed on a continuous box‐girder bridge and the performance is examined. The system was shown to assess the weight of all heavy vehicles.</p>

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