Adaptive Geometrical Construction Control Method of Super Long Span Cable Stayed Bridges

As the construction of long-span bridges such as cable-stayed bridges increases worldwide, maintaining bridge serviceability and operability has become an important issue in civil engineering. The stay cable is a principal component of cable-stayed bridges and is generally lightly damped and intrinsically vulnerable to vibration. Excessive vibrations in stay cables can potentially cause long-term fatigue accumulation and serviceability issues. Previous studies have mainly focused on the mitigation of cable vibration within an acceptable operational level, while little attention has been paid to the quantitative assessment of serviceability enhancement provided by vibration control. This study accordingly proposed and evaluated a serviceability assessment method for stay cables equipped with vibration control. Cable serviceability failure was defined according to the range of acceptable cable responses provided in most bridge design codes. The cable serviceability failure probability was then determined by means of the first-passage problem using VanMarcke’s approximation. The proposed approach effectively allows the probability of serviceability failure to be calculated depending on the properties of any installed vibration control method. To demonstrate the proposed method, the stay cables of the Second Jindo Bridge in South Korea were evaluated and the analysis results accurately reflected cable behavior during a known wind event and show that the appropriate selection of vibration control method and properties can effectively reduce the probability of serviceability failure.

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Construction Control and Simulation Analysis of Long-Span Cable-Stayed Bridge

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.255-260.816 ◽

2011 ◽

Vol 255-260 ◽

pp. 816-820

Author(s):

Fang Wen Wu ◽

Cheng Feng Xue

Keyword(s):

Calculation Method ◽

Simulation Analysis ◽

Construction Control ◽

System Transformation ◽

Long Span ◽

Design Requirements ◽

Forward Calculation ◽

The Relationship ◽

Element Theory ◽

Cable Stayed Bridges

Simulation analysis is the basis for construction control of cable-stayed bridges, it monitors the process of the bridge construction. The relationship and importance of simulation and construction control are introduced in the paper. Based on the finite element theory and combined with construction theory of the cable -stayed bridges, according to use the software Midas/Civil, the construction characteristics of Masangxi Bridge is researched by making use of the forward calculation method and the backward calculation method. The results show that the system transformation of the bridge is occurred during the construction, thus, it is important to carry out careful and detailed forward simulation to ensure the safety of construction structure and meet with design requirements. The reasonable results can be drawn when the backward calculation method is combined with the forward calculation method.

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Study of Cable Force of Construction Control and Alignment Control of Main Girders for Long-Span Railway Cable-Stayed Bridges

Modern Applied Science ◽

10.5539/mas.v7n9p47 ◽

2013 ◽

Vol 7 (9) ◽

Cited By ~ 2

Author(s):

Zengshun Chen ◽

Cheng Zhang ◽

Jianting Zhou ◽

Jun Song ◽

Chunrong Huang

Keyword(s):

Construction Control ◽

Long Span ◽

Cable Force ◽

Cable Stayed Bridges

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Mitigation of Wind-Rain-Induced Cable Vibration in Cable-Stayed Bridges: Measurement Error

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.1630 ◽

2012 ◽

Vol 226-228 ◽

pp. 1630-1633

Author(s):

Ling Yun Wang

Keyword(s):

Measurement Error ◽

Active Control ◽

Control Method ◽

Optical Tracking ◽

Design Guideline ◽

Cable Vibration ◽

Long Span ◽

Cable Vibrations ◽

Active Control Method ◽

Cable Stayed Bridges

Recent advances in structural and construction technologies have enabled engineers to use the cable efficiently in relatively large structures such as long span cable-stayed bridges. It appeared that many factors and phenomena can generate cable vibration. The cables usually possess low damping and are therefore prone to many vibration problems, even causing large displacement. The active control method has been introduced to control the cable vibration in the cable-stayed bridges. The active control method is an effective method to suppress cable vibrations by adjusting the cable tension which is varied with time. This approach utilizes the axial motion of cables supported by an actuator installed at the anchorage to produce a time-varying force in the cable. To synthesize the feedback control signal, the cable vibration is measured by an optical tracking sensor attached at the mid-span cable. The studies are carried out to investigate the measurement error features of the control method as a design guideline.

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Construction Monitoring Techniques for JU-MA River NO.3 Bridge

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.446-449.274 ◽

2012 ◽

Vol 446-449 ◽

pp. 274-277

Author(s):

Qing Du ◽

You Zhong Zhang ◽

Chang Bai Song

Keyword(s):

Control Method ◽

Survey Methods ◽

Construction Control ◽

Construction Monitoring ◽

Long Span Bridges ◽

Long Span ◽

Rigid Frame ◽

Control Survey ◽

The Right ◽

Rigid Frame Bridge

Construction monitoring is a system, especially for long-span pre-stressed concrete continuous rigid frame bridge. Based on the construction control of the right bridge Ju-ma River NO.3 Bridge, this paper has made comprehensive conclusion and detailed discussion in the aspects of construction control method, the basic process of construction control, and bridge construction control survey methods. The findings described herein will provide considerable reference for the construction control of other similar long-span bridges.

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