scholarly journals Mechanical System Evolution and Reasonable Structural Design Parameters of Long-Span Deck-Type Beam-Arch Composite Rigid Frame Bridge

2020 ◽  
Vol 15 (6) ◽  
pp. 885-893
Author(s):  
Yanchao Ding ◽  
Zhongfu Xiang ◽  
Yayong Li ◽  
Xuesong Zhang ◽  
Yin Zhou
Keyword(s):  
Mechanical System ◽  
Structural Design ◽  
Composite System ◽  
Main Beam ◽  
Design Parameters ◽  
System Evolution ◽  
Long Span ◽  
Rigid Frame ◽  
Bridge Model ◽  
Arch Bridges

Long-span deck-type beam-arch composite rigid frame (BACRF) bridge fully integrates the merits of arch bridges and beam bridges, and overcomes the cracking and deflection problems of continuous rigid frame bridges. As a perfect combination of beam bridges and arch bridges, the long-span deck-type BACRF bridge boasts a light structure, a strong bearing capacity, and a powerful spanning capability. From the perspective of mechanical system evolution, this paper theoretically analyzes the structural mechanics of the beam-arch composite system, establishes a half-bridge model for BACRF bridge, and derives the expressions of the internal force and displacement of the beam-arch composite system. Next, finite-element analysis was conducted to analyze how the variation of a single parameter, e.g., rise-span ratio, open web ratio, and side-to-middle span ratio, affects midspan displacement, arch-beam junction displacement, main beam bending moment, and main arch axial force. Finally, the calculation formula for deflection-span ratio of BACRF bridge was proposed based on the maximum hyperplane method. The research results provide a reference for the structural design of similar bridges.

Research on Space Simulation Methods for High-Pier Long–Span Pre-Stressed Continuous Rigid Frame Bridges

2011 ◽  
Vol 368-373 ◽  
pp. 1463-1468
Author(s):  
Jian Xun Zhao ◽  
Wei Feng ◽  
Dan Lei
Keyword(s):  
Load Capacity ◽  
Shaanxi Province ◽  
Main Beam ◽  
Thin Wall ◽  
Simulation Methods ◽  
Long Span Bridges ◽  
Long Span ◽  
Rigid Frame ◽  
Box Beams ◽  
High Pier

Along with the fact that more and more high-pier long-span bridges have been constructed in China, especially in western regions of China, the issues relevant to construction safety, load capacity have attracted duly attention of many bridge engineers. Taking Xushuihe Super Bridge of Yumenkou - Yanliang Expressway in Shaanxi Province as an example, the limited space element models including phase construction,concrete box beams, thin - wall hollow piers, pre-stressed main beam tendon, high piers, and regular reinforcement are proposed to be established in this paper. Thoughts and methods are developed for analysis of the space simulation during overall-process construction and operation, and references are given for further research on this kind of bridges.

Test Research on Aerodynamic Interference Effect on Aerostatic Coefficients of Main Beam in Parallel Bridge

2012 ◽  
Vol 178-181 ◽  
pp. 2131-2134
Author(s):  
Jie Wang ◽  
Jian Xin Liu
Keyword(s):  
Wind Tunnel ◽  
Drag Coefficient ◽  
Wind Tunnel Test ◽  
Lateral Force ◽  
Main Beam ◽  
Interference Effects ◽  
Force Coefficient ◽  
Long Span ◽  
Rigid Frame ◽  
Aerodynamic Interference

Against the problem of the aerodynamic interference effects on aerostatic coefficients between parallel continuous rigid frame bridges with high-pier and long-span, the aerodynamic interference effects on aerostatic coefficients of main beam in the parallel long-span continuous rigid frame bridges were investigated in details by means of wind tunnel test. The space between the two main beams and wind attack angles were changed during the wind tunnel test to study the effects on aerodynamic interferences of aerostatic coefficients of main beam. The test got aerostatic coefficients of 10 conditions. The research results have shown that the aerodynamic interference effects on aerostatic coefficients of main beam in parallel bridges can not be ignored. The aerodynamic interference effects on parallel bridge main beam is shown mainly as follows: The drag coefficient of main beam downstream dropped and the drag coefficient of main beam upstream changed but not change significantly. There are also the aerodynamic interference effects of lateral force coefficient and torque coefficient between the main beams upstream and downstream. The effects upstream are smaller and the effects downstream are larger.

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 the Construction Control of Long-Span V-Shape Rigid Frame Composite Arch Bridges

2011 ◽  
Vol 255-260 ◽  
pp. 1043-1047
Author(s):  
Hong Ye Gou ◽  
Qian Hui Pu ◽  
Jun Ming Wang ◽  
Guo Wei Hu ◽  
Ze Yu Chen
Keyword(s):  
Structural Alignment ◽  
Internal Force ◽  
Constant Load ◽  
Calculation Model ◽  
Construction Control ◽  
Whole Process ◽  
Long Span ◽  
Rigid Frame ◽  
Simulation Calculation ◽  
Arch Bridges

The construction scheme of long-span V-shape rigid frame composite arch bridge is discussed. In process of simulation calculation of the construction, the author compiles APDL command flow program by using the unit birth-death technique, establishes simulation calculation model in the construction process. The creep characteristics of concrete are also taken into account. The whole process of beam first-to-arch later stage construction are calculated and studied.By researching on construction control of Xiaolan channel super large bridge, the feasibility of the construction program is evaluated, the alignment and displacement in each construction ideal state are determined and the alignment and displacement in the following construction state are predicted. The stress controling results of the critical sections are researched on to make the construction go along well as designed, make sure the safety during construction, the structural internal force under constant load and structural alignment are complied with the design requirements and the construction quality and safety are ensured.

Spatial mechanical behaviors of long-span V-shape rigid frame composite arch bridges

2013 ◽  
Vol 47 (1) ◽  
pp. 59-73 ◽  
Author(s):  
Hongye Gou ◽  
Qianhui Pu ◽  
Junming Wang ◽  
Zeyu Chen ◽  
Shiqiang Qin
Keyword(s):  
Mechanical Behaviors ◽  
Long Span ◽  
Rigid Frame ◽  
Arch Bridges
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