scholarly journals Crack Control Technology of SPMT Transportation Structure of Long-span and Special-shaped Concrete Box Girder

2021 ◽  
Vol 768 (1) ◽  
pp. 012058
Author(s):  
Wenhuo Sun ◽  
Pingjie Li ◽  
Kehao Zhang ◽  
Ming Tang
Keyword(s):  
Control Technology ◽  
Box Girder ◽  
Crack Control ◽  
Long Span ◽  
Concrete Box Girder

Research of Temperature Field of Long Span Concrete Box Girder Bridge Caused by Solar Radiation

2012 ◽  
Vol 256-259 ◽  
pp. 1635-1639
Author(s):  
Cun Ren Jiang ◽  
Jian Min Ren ◽  
Zhuo Ling Wang
Keyword(s):  
Temperature Field ◽  
Temperature Gradient ◽  
Solar Radiation ◽  
Structure Design ◽  
Box Girder ◽  
Qinghai Province ◽  
Long Span ◽  
Concrete Box Girder ◽  
Girder Bridge ◽  
Bottom Slab

When stimulate temperature field of concrete box girder caused by solar radiation with ANSYS, it’s feasible to turn boundary conditions to third boundary condition. Taking Ping'an Huangshui River Super-large Bridge in Qinghai Province for example, the research analyzes box girder temperature field distribution and deduces realistic temperature gradient mode by comparing calculations with measurements. Calculations show that bottom slab of box girder also has quite big temperature gradient which should be taken seriously in bridge structure design.

Automatic Maintenance and Temperature Measurement System Prestressed Concrete Box Girder in the Use of Crack Control

2013 ◽  
Vol 443 ◽  
pp. 303-307
Author(s):  
Li Cai Zhao
Keyword(s):  
Prestressed Concrete ◽  
Concrete Surface ◽  
Surface Cracks ◽  
Construction Process ◽  
Box Girder ◽  
Crack Control ◽  
Automatic Maintenance ◽  
Concrete Box Girder ◽  
Temperature Measurement System ◽  
Construction Practice

In the Xiamen-Shenzhen Railway 32 m-span prestressed concrete box girder construction process, concrete box girder cracks always confused engineering and technical personnel, is a common and more difficult to solve quality problems, for box girder concrete surface cracks issues were discussed, and put forward a repair program to be applied in construction practice.

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