Research on Gradient Law of Beam Height in Long-Span Continuous Rigid Frame Bridge

2012 ◽  
Vol 446-449 ◽  
pp. 1059-1062
Author(s):  
Guo Dong Zheng ◽  
Huan Zhang
Keyword(s):  
Lateral Force ◽  
Wide Margin ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Box Structure ◽  
Beam Height ◽  
Rigid Frame Bridge ◽  
The Impact ◽  
Force Characteristics

Combined the design of a long-span continuous rigid frame bridge of a highway in Pearl River Delta of China and based on the longitudinal and lateral force characteristics of the large span, wide margin and wide box structure, the appropriate principles and methods to determine the index of the parabolic line is raised through analyzing and comparing the impact of the gradient law of the parabolic beam height of different index on structural forces.

Space Analysis of Long-Span Continuous Rigid Frame Bridges

2013 ◽  
Vol 671-674 ◽  
pp. 1045-1050
Author(s):  
Xian Wu Hao ◽  
Ya Xun Yang
Keyword(s):  
Radius Of Curvature ◽  
Stress And Strain ◽  
Analysis Program ◽  
Element Analysis ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Design Proposal ◽  
Rigid Frame Bridge ◽  
The Impact

With the background of continuous rigid frame bridge,this paper considers the impact of the structural weight and the pre-stressed force in the construction phase,uses the ANSYS finite element analysis program to analyze the stress and strain of an continuous rigid frame bridge in the the largest cantilever state, focuses on different effects of the different radius of curvature and pier height.Through the analysis constructs the control mentality and the corresponding design proposal for the continuous rigid frame bridge had been provided.

Vibration of Long-Span & High Pier Continuous Rigid-Frame Bridge due to Traffic Load

2013 ◽  
Vol 353-356 ◽  
pp. 3288-3293
Author(s):  
Dong Huang Yan ◽  
Si Wei Hong ◽  
Ming Yuan
Keyword(s):  
Fundamental Frequency ◽  
Comfort Level ◽  
Traffic Load ◽  
Line Load ◽  
Impact Action ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Rigid Frame Bridge ◽  
The Impact

The bridge vibration problem would be highlighted due to flexibility of bridge when traffic is run on the long-span & high-tower continuous rigid-frame bridge. The finite-element (FE) software of bridge-vehicles coupling vibration theory was utilized to analyze traffic load influence on bridge vibration. It is found that the vehicle accelerations are varied greatly in the middle of mid-span and edge of side-span and vehicle bodies are plunged. According to the evaluating indicator of comfort level, people feel sea-sickness when vehicles run in design speed with fundamental frequency. Due to fundamental frequency of body in different speed, the sea-sickness feel will be stronger with lower speed. The impact action can be decreased by the increase number of vehicle-line load, and it is affected by the distance of vehicle-line load.

Research on Setting of Pre-Camber of Long-Span Continuous Rigid Frame Bridge with High Piers

2011 ◽  
Vol 255-260 ◽  
pp. 821-825 ◽  
Author(s):  
Yun Bo Zhang ◽  
Da Peng Liu
Keyword(s):  
Live Load ◽  
Construction Process ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Shrinkage And Creep ◽  
Post Operation ◽  
Late Loss ◽  
Rigid Frame Bridge ◽  
The Impact

In the design of continuous rigid frame bridge setting reasonable pre-camber can eliminate the impact of various loads on the linear in construction process, reduce shrinkage and creep in the process of post-operation, the late loss of pre-stressed, deformation produced by live load and so on ,resulting in deflection phenomenon. Based on the current specifications of the continuous rigid frame bridge camber setting methods, this thesis proposes the reasonable setting suggestions of pre-camber and sets examples to illustrate this.

scholarly journals Technology Research Status Review of Long-span Continuous Rigid Frame Bridge Deck Pavement

2015 ◽  
Vol 9 (1) ◽  
pp. 1028-1034
Author(s):  
Hu Wang ◽  
Fei Han
Keyword(s):  
Finite Element ◽  
Bridge Deck ◽  
Engineering Practice ◽  
Research Status ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Rigid Frame Bridge ◽  
The Impact ◽  
Bridge Deck Pavement

Through the analysis and summary of research status and development trends of deck pavement technology of long-span continuous rigid frame bridge deck pavement at home and abroad, the impact factors of durability of continuous rigid frame bridge deck pavement, such as design flaw, constructional quality and overload are studied. This article will comprehensively analyze the cause of disease focusing on mechanism, structure design deficiency and classification method. Analysis shows that: the durability of continuous rigid frame bridge deck pavement is determined not only by pavement material strength, but also by pavement layer thickness and materials of bridge deck. It is integrated design of pavement and bridge deck, superior construction quality and craft that make sure deck pavement durability. Besides, there are still some imperfections and unreasonableness in existing literatures using finite element calculation of continuous rigid frame bridge deck pavement. In order to provide more credible data for future engineering practice and relevant standard, the finite element method and boundary conditions should be studied and improved.

The Study of Aseismatic Performance of Continuous Rigid-Frame Bridge

2011 ◽  
Vol 243-249 ◽  
pp. 1901-1907
Author(s):  
Yong He Li ◽  
Ren Xiong ◽  
Ai Rong Liu ◽  
Jun Ping Zhang
Keyword(s):  
Plastic Hinge ◽  
Bending Moment ◽  
Reinforcement Ratio ◽  
Strong Impact ◽  
Plastic Rotation ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Rigid Frame Bridge ◽  
The Impact

The aseismatic performance of long span continuous rigid-frame bridge is an important but difficult research topic. To explore the impact of pier height and reinforcement ratio on long span continuous rigid-frame bridge’s aseismatic performance, Midas/Civil bridge Finite Element program is used to construct the three-dimensional model of a continuous rigid-frame bridge in this research. Fiber element and plastic hinge are used in pier simulation. Through the adjustment of pier height and ratio of reinforcement, the internal force, displacement and plastic rotation of bridge pier’s critical sections are analyzed under the action of seismic loading. Thereby, the impact of pier height and plastic hinge on such bridge’s aseismatic performance is obtained. It is shown that: maximum displacement, bending moment and plastic rotation increase at pier cap with pier height, indicating that pier height has strong impact on seismic response. And with increasing reinforcement ratio, the bending moment and yielding moment at pier cap and base both increase. Therefore, suitable pier height and reinforcement ratio should be selected for better aseismatic performance.

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.

Analysis of Technical Characteristics and Construction Focus of Long-Span Continuous Rigid Frame Bridge with High-Rise Piers

2014 ◽  
Vol 587-589 ◽  
pp. 1637-1641
Author(s):  
Yao Cui ◽  
We Nang Hou ◽  
Fei Ying Liu
Keyword(s):  
Deep Water ◽  
Water Reservoir ◽  
Bridge Pier ◽  
Reservoir Area ◽  
High Rise ◽  
Construction Methods ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Rigid Frame Bridge

Under the condition of the deep water reservoir area, the choice of bridge pier and long span continuous rigid frame beam construction methods are quite various. And the analysis of destruction of bridge depends mostly on the beam and piers. The paper cares mostly about these two parts.

Long Term Deformation Control of Long-Span Pre-Stressed Concrete Continuous Rigid Frame Bridge with Ballastless Track

2010 ◽  
Vol 163-167 ◽  
pp. 1515-1519 ◽  
Author(s):  
Jian An Cao ◽  
Mei Xin Ye ◽  
Wen Qi Hou
Keyword(s):  
Rail Transit ◽  
Bridge Construction ◽  
Deformation Control ◽  
Long Span ◽  
Ballastless Track ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
External Tendons ◽  
Rigid Frame Bridge

Aiming to Ronggui Bridge (RGB) on Guangzhou-Zhuhai Intercity Rapid Rail Transit (GZIRRT), long term deformation control of long-span pre-stressed concrete continuous rigid frame bridge with ballastless track was studied. Comparing with the non-controlled deformation, extend track laying six months later after bridge construction, reserve 48 post-tensioned cables in middle spans and tension 12 external tendons after tracking laying were all effective in decreasing the long term deformation of RGB with individual application. Taking bridge construction and railway service in consideration, applying the foregoing three measures in combination, deformation of RGB 20 years later after track laying was effectively controlled within 12.8mm in the side spans and 21.9mm in the middle spans, which is less than the deformation limitation of bridges with ballastless track. The combined measure has been adopted in the actual construction of RGB.

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