scholarly journals Intelligent Active Correction Technology and Application of Tower Displacement in Arch Bridge Cable Lifting Construction

2021 ◽  
Vol 11 (21) ◽  
pp. 9808
Author(s):  
Nianchun Deng ◽  
Mengsheng Yu ◽  
Xinyu Yao
Keyword(s):  
Active Control ◽  
Practical Method ◽  
Steel Tube ◽  
Construction Monitoring ◽  
Arch Bridge ◽  
Construction Period ◽  
Long Span ◽  
Elevation Changes ◽  
Bridge Cable ◽  
In Virtue Of

In order to control the tower deviation in the cable hoisting process of long-span concrete-filled steel tubular arch bridge during construction monitoring, a practical method of tower deviation correction was studied and established. In the paper, based on the studies about the deviation error formation mechanism of tower in the process of cable lifting, the relevant formulas of the arch rib elevation changes caused by the change of tower state were deduced. The traditional control methods including increase of tower stiffness and strength of the anchor cable, are not effective, costly, and require a longer construction period. To overcome these defects, in virtue of the Beidou GNSS measurement system and hydraulic jack active control system, the active control technology of the CFST (Concrete Filled Steel Tube) arch bridge tower deviation was thoroughly studied. Besides, a perfect active control theory was established. Finally, the author puts forward the idea of reverse pulling tower deviation. The field measurement and comparative study show that after the optimization of this method, the tower deviation is within 2 cm, and the error meets the specification requirements. The proposed method can accurately control the tower deviation in the process of arch bridge cable hoisting, and establish a set of perfect active control related systems and theories, which is especially suitable for the construction monitoring and adjustment in the construction stage of arch bridge, and can provide reference for the construction control of tower deviation of the same type of bridge.

Seismic Response Analysis of CFST Arch Bridge Considering Input Earthquake Characteristics

2011 ◽  
Vol 255-260 ◽  
pp. 962-966
Author(s):  
Fan Xing ◽  
Lin Zhao ◽  
Ya Zhe Xing
Keyword(s):  
Seismic Response ◽  
Research Result ◽  
Steel Tube ◽  
Response Analysis ◽  
Vibration Period ◽  
Arch Bridge ◽  
Near Fault ◽  
Long Span ◽  
Cfst Arch Bridge ◽  
Out Of Plane

In view of huge destructibility of the near-fault ground motions, structures with long natural vibration period are liable to fall into nonlinear reaction stage. Based on a full understanding of the near-fault seismic spectrum characteristics, the out-of-plane seismic response of a long span concrete-filled steel tube (CFST) arch bridge was studied in depth, and the research result could offer a reference for near-fault aseismic design.

Construction Monitoring Technology Research on Large-Span V Structure Tied Arch Bridge

2013 ◽  
Vol 351-352 ◽  
pp. 1240-1243 ◽  
Author(s):  
Ting Yin ◽  
Wei Zhang ◽  
Yan Bo Zhao ◽  
Xiao Long Sun
Keyword(s):  
Actual State ◽  
Construction Process ◽  
Bridge Construction ◽  
Monitoring Point ◽  
Monitoring Technology ◽  
Construction Monitoring ◽  
Arch Bridge ◽  
Large Span ◽  
Long Span ◽  
Tied Arch Bridge

Large-span V structure tied arch bridge structure system is complex. In order to make the actual state of the bridge into the ideal state of maximum close to the design, we must make real-time monitoring in the key parts of the structure, and adjust to the design of the data by analysis calculated, to ensure the safety and reliability of arch bridge in the course of construction and into stress after the completed bridge. Combined with the construction monitoring of the main Xinglong Bridge on Si River, this paper introduces the main bridge construction process measurement a preliminary study on the large span V configuration basket tied arch bridge construction monitoring technology. Based on the construction monitoring of Xinglong Bridge on Si River, this paper introduces the main contents and methods of monitoring point location, monitoring control of construction process, and discussed the construction monitoring technology of long-span X-style tied arch bridge V structure.

scholarly journals Dynamic Response of a Long-Span Concrete-Filled Steel Tube Tied Arch Bridge and the Riding Comfort of Monorail Trains

2018 ◽  
Vol 8 (4) ◽  
pp. 650 ◽  
Author(s):  
Hongye Gou ◽  
Wen Zhou ◽  
Changwei Yang ◽  
Yi Bao ◽  
Qianhui Pu
Keyword(s):  
Dynamic Response ◽  
Steel Tube ◽  
Arch Bridge ◽  
Concrete Filled Steel Tube ◽  
Long Span ◽  
Tied Arch Bridge

Design and Optimization of Concrete-Filled Steel Tube Arch Bridge Using Cable-Hoisting Method

2011 ◽  
Vol 255-260 ◽  
pp. 896-900
Author(s):  
Xiao Fei Liang ◽  
Yue Xu ◽  
Hong Jing Du
Keyword(s):  
Steel Tube ◽  
Hunan Province ◽  
Construction Technology ◽  
Systematic Analysis ◽  
Arch Bridge ◽  
Design And Optimization ◽  
Long Span ◽  
Long Span Bridge ◽  
Cfst Arch Bridge ◽  
Hoisting System

Based on the hoisting construction feature of large hinge-support tower and field circumstance, the cable hoisting system for Meng-dong river grand bridge at the west of Hunan province is designed. Studying on cable hoisting system design and construction of the CFST arch bridge, the paper takes systematic analysis and calculations on the key construction technology of the CFST arch bridge, and puts it in practice successfully which provides experience for the similar long—span bridge construction of the follow.

Sensitivity Analysis on Dynamic Properties of Large Span Concrete-Filled Steel Tube Arch Bridge

2012 ◽  
Vol 204-208 ◽  
pp. 1976-1979
Author(s):  
Hang Sun ◽  
Xiao Jian Han ◽  
Xiu Yun Gao
Keyword(s):  
Dynamic Properties ◽  
Steel Tube ◽  
Design Parameters ◽  
Arch Bridge ◽  
Concrete Filled Steel Tube ◽  
Space Model ◽  
Long Span ◽  
Current Design ◽  
Arch Bridges ◽  
The Impact

The calculation formula of the vertical fundamental frequency of arch bridge has been given in current design codes, in which the rise-span ratio is the only variable on condition that the structure mass and stiffness are known. However, the dynamic properties of long-span concrete filled steel tube arch bridges have their own characteristics, which are influenced by a series of factors. Thus this article establishes a space model of a concrete-filled steel tube arch bridge. By analyzing the main design parameters’ influence on the structure dynamic properties, including rise-span ratios, arch-axis coefficient and wide-span ratios, some of conclusions has been made, which can be used for further research of the impact effect and earthquake dynamic response, and provide the necessary basis for the dynamic design of bridges of this kind

Study on Transverse Synchronization Control for Super-Breadth and Long-Span Basket Handle Arch Bridge when Vertically Rotating

2013 ◽  
Vol 438-439 ◽  
pp. 917-922
Author(s):  
Zhi Wei Sun ◽  
Xiao Guang Wu
Keyword(s):  
Steel Tube ◽  
Synchronization Control ◽  
The Finite Element Method ◽  
Arch Bridge ◽  
Long Span ◽  
Maximum Value ◽  
Cfst Arch Bridge ◽  
The Difference ◽  
Arch Bridges ◽  
Main Arch

Monitoring and controlling of vertical construction for main arch ribs is most important for concrete-filled steel tube (CFST) arch bridges due to high risk. Controlling the difference of elevation between the two main arch ribs has direct influence on the mechanical behavior of lateral brace, towers and temporary hinges at arch abutments of main piers. Therefore, transverse synchronization control is the main priority in vertical rotating construction phase. Taking a half-through CFST arch bridge in Shijiazhuang City as an example, this paper make a study of transverse synchronization control of the two main arch ribs during vertical rotation. The finite element method (FEM) software-Midas is employed to simulate the main arch ribs in rotation construction phase, and maximum value of the difference of elevation between the two main arch ribs is obtained to offer reference and basis of vertical rotation construction of this bridge.

scholarly journals Design of Pedestrian Landscape Flying-Bird Arch Bridge with Cable-Stayed Cable and Lissajous Curved Arch Rib

2021 ◽  
Vol 237 ◽  
pp. 04024
Author(s):  
Guangchuan Zhu ◽  
Wenping Xu ◽  
Jinfa Xu
Keyword(s):  
Bridge Deck ◽  
Element Model ◽  
Internal Force ◽  
Steel Tube ◽  
Dynamic Mode ◽  
Structural Dynamic ◽  
Arch Bridge ◽  
Curved Bridge ◽  
Long Span ◽  
Positive Projection

In view of the demand of super long span pedestrian landscape bridge with curved deck, this paper proposes a kind of cable-stayed and flying-brid arch bridge with Lissajous curved arch rib and double curved bridge deck. Its plane positive projection is Lissajous curve figure, the side elevation of the arch rib is the shape of the cable-stayed and flying-brid arch, and the arch foot cable and the upper space cable between the arch ribs are installed on the Lissajous spatial curved arch rib with concrete-filled steel tube to form a self balanced structure system, which floats and drags across the river. The main arch sling and the tail cable are installed, the double curved bridge deck and the central circular sightseeing platform are suspended, and multiple groups of spatial cables work well together to complement each other, with having complementary advantages. Combined with the actual project, the parameter design is carried out, the Midas finite element model is established, the internal force of the structure is calculated, the structural dynamic mode and stability analysis are carried out, the rationality of its structural performance is verified by analysis and research.

Monitoring of Long-Span Self-Anchored Arch Bridge Constructed with Rotation Method

2012 ◽  
Vol 178-181 ◽  
pp. 1977-1982 ◽  
Author(s):  
Juan Hu ◽  
Xiao Yi Sun ◽  
Sheng Jun Jiao
Keyword(s):  
Vertical Displacement ◽  
Construction Process ◽  
Construction Monitoring ◽  
Arch Bridge ◽  
Long Span ◽  
Rotation Method ◽  
Complicated Process ◽  
Final Design ◽  
Design Requirements

In recent years, rotation construction is widely used in construction of arch birdge, and the method of construction is difficult and has complicated process. Construction process control for rotation construction of the long-span anch bridge is not only the key measure to ensure the states meeting the design requirements of the constructed bridge, but also is the important part to ensure the construction quality and safety. Therefore, it is necessary to control the construction for the long-span self-anchored arch bridge. The paper established the control system according to the rotation constrcution for the long-span self-anchored arch bridge which is overpass a exited major highway. And took a follow-up observations for the actual states of the constructing arch bridge, and used the finite enlement software ANSYS to analyze the stress of the structure and static and dynamic stress in the process of rotation construction. Comparing the theoretical value to the measured results showed that there was good meet between the results. And the rotation construction was stable, the vertical displacement and the acceleration were smaller, and didn’t take a bad effects on the structure. According to the results of the finite element and monitoring, it will provide the target of the construction monitoring for each construction segment, and meet the final design of the bridge, furthermore it will provide a reliable reference for the smooth progress of construction.

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.

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