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

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.

Research on Construction Control of Long-Span CFST Arch Bridge

2015 ◽  
Vol 777 ◽  
pp. 88-93
Author(s):  
Ying Gu ◽  
Ya Dong Li ◽  
Sai Zhi Liu
Keyword(s):  
Calculation Method ◽  
Line Shape ◽  
Shape Control ◽  
Steel Tube ◽  
Construction Control ◽  
System Transformation ◽  
Arch Bridge ◽  
Long Span ◽  
Cable Forces ◽  
Control Principle

For an arch rib of concrete filled steel tube (CFST) erected by cable-stayed cantilever method, the construction control becomes increasingly difficult along with the erection of rib segments, owing to more system transformation, and higher degrees of static indeterminacy. First, for the problems usually occurred in the process of ribs erection, this paper presented a line-shape control principle that is “erecting higher, remaining stationary”. Secondly, based on analysis of the merits and demerits of common methods for cable forces calculation, and according to the principle of “remaining stationary”, a new calculation method for cable forces was proposed. At last, based on an X-style CFST railway arch bridge with a span of 360m, this paper compared the cable forces calculated by the new method with the actual tensioned forces, analyzed the variation of segments displacement in the process of erection, and discussed the influence of prearranged height on weld width. The control principle and the calculation method for cable forces presented in this paper have been proved effective, by the line-shape data measured after the closure of arch ribs, which may provide valuable reference for the construction control of similar CFST arch bridges.

Practical Calculation of Cable-Stayed Arch Bridge Lateral Stability

2014 ◽  
Vol 587-589 ◽  
pp. 1586-1592 ◽  
Author(s):  
Wei Lu ◽  
Ding Zhou ◽  
Zhi Chen
Keyword(s):  
Calculation Method ◽  
Practical Calculation ◽  
Lateral Stability ◽  
Bridge Structure ◽  
Construction Process ◽  
Energy Principle ◽  
Arch Bridge ◽  
Long Span ◽  
Arch Bridges ◽  
Cable Stayed Bridges

A long-span cable-stayed arch bridge is a new form of bridge structure that combines features of cable-stayed bridges with characteristics of arch bridges. In the present study, we derived a practical calculation method for the lateral destabilization critical loading of cable-stayed arch bridges during the construction process based the energy principle. The validity of the method was verified with an example. The calculation method provides a quick and efficient way to evaluate the lateral stability of a cable-stayed arch bridge and a concrete filled steel tubular arch bridge during the construction process.

Sensitivity Parameter Analysis and Accurately Calculation Method of Cables Unstressed Length for Cable-Stayed Bridges

2014 ◽  
Vol 587-589 ◽  
pp. 1622-1626
Author(s):  
Jun Tian ◽  
Xiao Wei Wu ◽  
Yan Fei Hu
Keyword(s):  
Elastic Modulus ◽  
Temperature Difference ◽  
Calculation Method ◽  
Parameter Analysis ◽  
Construction Control ◽  
Dynamic Displacement ◽  
Sensitivity Parameter ◽  
Sensitivity Factors ◽  
Cable Stayed Bridges ◽  
Key Parameter

The cables unstressed length is an important key parameter of design and construction control. In order to accurately calculate cables unstressed length for cable-stayed bridges, the longer principle for cables is avoided at current. The various factors were fully considered which affect cables unstressed length, and the sensitivity parameters of various factors were analyzed. The sensitivity factors were identified, and not sensitivity factors were ignored. It is sensitivity factors that towers deviation in advance, towers dynamic displacement, girders pre-camber, girders dynamic displacement, temperature difference, cables elastic modulus error, the load values with calculation of cables for elastic elongation. The accurately calculation method of cables unstressed length was proposed, which was based on sensitive factors. The method of cables unstressed length is more reasonable and accurate.

The Pre-Stressed Modal Calculation Method of Long-Span Suspension Bridge

2012 ◽  
Vol 204-208 ◽  
pp. 2123-2126
Author(s):  
Jun Long Zhou ◽  
Li Nan Li ◽  
Shi Gang Sun ◽  
Song Bao Cai
Keyword(s):  
Finite Element ◽  
Calculation Method ◽  
Suspension Bridge ◽  
Bridge Structure ◽  
Long Span ◽  
Bridge Model ◽  
Element Theory

Taking suspension bridge for example, this paper based on finite element theory and derived the formulas of pre-stressed modal computing theory of the bridge structure. Then to check the correctness of the theory, we calculated a real bridge model. Finally we get a theory to calculate bridge pre-stress modal.

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

2013 ◽  
Vol 7 (9) ◽  
Author(s):  
Zengshun Chen ◽  
Cheng Zhang ◽  
Jianting Zhou ◽  
Jun Song ◽  
Chunrong Huang
Keyword(s):  
Construction Control ◽  
Long Span ◽  
Cable Force ◽  
Cable Stayed Bridges

Research on Construction Control of Long-Span Prestressed Concrete Continuous Girder Bridge

2014 ◽  
Vol 1030-1032 ◽  
pp. 843-846 ◽  
Author(s):  
He An Wan
Keyword(s):  
Prestressed Concrete ◽  
Simulation Analysis ◽  
Effective Control ◽  
Highway Bridge ◽  
Construction Control ◽  
Construction Process ◽  
Long Span ◽  
Computational State ◽  
Continuous Girder Bridge ◽  
Girder Bridge

On the background of 318 highway bridge of the Yinjiang Jihan Navigation Project, it introduces the methods and contents of the construction control of long-span prestressed concrete continuous girder bridge, it adopts Midas/Civil softwares to have a simulation analysis and effective control for the construction process of whole bridge. The result indicates that safety of the bridge construction, linear and the variation of prestress are all in control. Finally, the condition of structure of bridge suits for computational state theoretically.

Impact Analysis on Construction Control of Pre-Camber for Long-Span Continuous Rigid Frame Bridge in Winter Intermission

2013 ◽  
Vol 343 ◽  
pp. 27-29
Author(s):  
Ya Xun Yang ◽  
Yuan Hong ◽  
Chao Qiao
Keyword(s):  
Impact Analysis ◽  
Construction Control ◽  
Construction Stage ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Design Requirements ◽  
Rigid Frame Bridge ◽  
The Impact ◽  
Line Type

Cantilever casting construction has been commonly used in construction of continuous rigid frame bridge and the implementation of construction control plays an important role in ensuring the line-type of built bridges and the forced state in construction stage is within the design requirements range. It tends to construct across the winter possibly. Based on an analysis of a typical continuous rigid frame bridge construction stage, this paper takes the impact of winter intermission on pre-camber in construction stage into consideration and the research has guiding significance for the construction of the similar bridge to a certain degree.

Structural Performance of Super-Long-Span Cable-Stayed Bridges with Steel and CFRP Hybrid Cables

2019 ◽  
Vol 45 (5) ◽  
pp. 3569-3579
Author(s):  
Shengjiang Sun ◽  
Kuihua Mei ◽  
Yiming Sun ◽  
Bo Li ◽  
Huanzi Huang
Keyword(s):  
Structural Performance ◽  
Long Span ◽  
Cable Stayed Bridges
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