Study on the Anti-Cracking of GFRP Bars Asphalt Concrete Bridge Deck Pavement under the Vehicle Load

2014 ◽  
Vol 919-921 ◽  
pp. 1173-1177
Author(s):  
Xiao Xin Feng ◽  
Xiong Jun He ◽  
Zhu Hua Yang
Keyword(s):  
Bridge Deck ◽  
Mechanical Analysis ◽  
Solid Model ◽  
Finite Element Software ◽  
Gfrp Bars ◽  
Vehicle Load ◽  
Load Carrying ◽  
Concrete Bridge Deck ◽  
Distribution Of Stress ◽  
Bridge Deck Pavement

the mechanical analysis of bridge deck pavement is limited at home and abroad.As is known to all,when we referred to the load-carrying capability of a bridge, the deck pavement is surely the weakest part. It is necessary to analyze the distribution of stress on bridge deck pavement, then design the pavement reasonably. In this paper, the model of bridge deck structure can be analyzed using solid model of bridge deck established in the principle of the finite element software. The analysis mainly includes two sides: one is analyzing the tensile stress of the deck caused by vehicle from Horizontals and verticals;the other is about finding the position of the most unfavorable load, and replacing corrosion-resistant GFRP with common steel ,then establishing GFRP reinforced asphalt bridge deck solid model. The author will analyze the setting states and the most suitable location of GFRP bras under the vehicle load on the bridge deck. At last we make the conclusion that the GFRP bars can effectively undertake the stress to prevent cracking.

Road Performance of Fiber Reinforced Asphalt Concrete Bridge Deck Pavement

2013 ◽  
Vol 13 (21) ◽  
pp. 4666-4670 ◽  
Author(s):  
Xiu Liu ◽  
Zhaojie Sun ◽  
Decheng Feng ◽  
Yixiang Cao
Keyword(s):  
Asphalt Concrete ◽  
Bridge Deck ◽  
Concrete Bridge ◽  
Fiber Reinforced ◽  
Concrete Bridge Deck ◽  
Road Performance ◽  
Bridge Deck Pavement

Research on Reasonable Structure of Cement Concrete Bridge Deck Pavement in Cold Region

ICCTP 2010 ◽  
2010 ◽  
Author(s):  
Zhen-wu Shi ◽  
Wei Li ◽  
Li-ming Wang ◽  
Moatasim ◽  
Yong-fei Feng
Keyword(s):  
Bridge Deck ◽  
Concrete Bridge ◽  
Cold Region ◽  
Cement Concrete ◽  
Concrete Bridge Deck ◽  
Bridge Deck Pavement

Investigation of Experimental Model for Designing Concrete Bridge Deck Reinforced with GFRP Bars

2011 ◽  
Vol 71-78 ◽  
pp. 569-572
Author(s):  
Chun Hong Li ◽  
De Min Wei ◽  
Yu Zheng
Keyword(s):  
Bearing Capacity ◽  
Experimental Model ◽  
Bridge Deck ◽  
Concrete Bridge ◽  
Test Model ◽  
Membrane Action ◽  
Simply Supported ◽  
Gfrp Bars ◽  
Working Property ◽  
Concrete Bridge Deck

Since the traditional design methods are based on the simply-supported experimental model, the bearing capacity of concrete bridge deck reinforced with GFRP bars is often determined by serviceability limits. The predicted bearing capacity is so low that high reinforcement ratio and construction cost are lead to. However, the previous researches on concrete bridge decks reinforced with GFRP bars revealed that crack widths and deflections were far less than the predictions by traditional codes, due to the existing of compression membrane action. This paper proposes a restraint test model to stimulate the comprehensive working property of deck system，considering the restraint from other part of the deck. Compared with simply-supported test model, bearing capacity and serviceability of the proposed are improved by more than 1 time. New experimental model for designing concrete bridge deck reinforced with GFRP bars are required.

scholarly journals Dynamic Response of Multitower Suspension Bridge Deck Pavement under Random Vehicle Load

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Chenchen Zhang ◽  
Leilei Chen ◽  
Gang Liu ◽  
Zhendong Qian
Keyword(s):  
Dynamic Response ◽  
Orthotropic Plate ◽  
Bridge Deck ◽  
Mechanical Response ◽  
Bending Moment ◽  
Suspension Bridge ◽  
Experimental Program ◽  
Steel Bridge ◽  
Vehicle Load ◽  
Bridge Deck Pavement

Recently, the multitower suspension bridge has been widely used in long-span bridge construction. However, the dynamic response of the deck and pavement system of the multitower suspension bridge under random vehicle load is still not clear, which is of great significance to steel-bridge deck pavement (SBDP) design and construction. To reveal the mechanical mechanism of the steel-bridge deck pavement of the multitower suspension bridge under traffic load, this paper analyzed the mechanical response of the pavement based on case study through the multiscale numerical approach and experimental program. Firstly, considering the full-bridge effect of the multitower suspension bridge, the finite element model (FEM) of the SBDP composite structure was established to obtain key girder segments. Secondly, the influences of pavement layer, bending moment and torque, random traffic flow, and bridge structure on the stress of the girder segment were analyzed. Thirdly, the mechanical response of the pavement layer to the orthotropic plate under random vehicle load was studied. Finally, a full-scale model of the experimental program was established to verify the numerical results. Results show that (1) the pavement layer reduced the stress of the steel-box girder roof by about 10%. In the case of adverse bending moment and torque, the longitudinal and transverse stresses of the pavement layer were mainly concentrated in the stress concentration area near the suspender. Under the action of the random vehicle flow, the stress response of the pavement layer was increased by 40% compared with that under standard load. (2) Three-tower and two-span bridge structures have a great influence on the vertical deformation of the pavement layer under the action of vehicle load. Thus, the pavement material needs to have great deformation capacity. (3) The full-bridge effect has a significant influence on the longitudinal stress of the local orthotropic plate, but a small influence on the transverse stress. (4) There is a good correlation between the experimental measurement results of the full-size model and that of the numerical model. The research results can provide guidance for SBDP design and construction of the multitower suspension bridge.

scholarly journals Mechanical Evaluation of Concrete Bridge Deck Pavement Systems

2019 ◽  
Vol 48 (1) ◽  
pp. 20190165
Author(s):  
Christiane Raab ◽  
Manfred N. Partl
Keyword(s):  
Bridge Deck ◽  
Concrete Bridge ◽  
Concrete Bridge Deck ◽  
Bridge Deck Pavement

scholarly journals Decision Method of Bridge Deck Pavement Maintenance Based on the Decision Maker’s Objective

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Xiaofei Liang ◽  
Jun Shi ◽  
Zhongmei Li
Keyword(s):  
Bridge Deck ◽  
Hierarchical Structures ◽  
Operation Time ◽  
Cost Benefit ◽  
Decision Makers ◽  
Bridge Engineering ◽  
Pavement Maintenance ◽  
Bridge Structures ◽  
Concrete Bridge Deck ◽  
Bridge Deck Pavement

The performance of reinforced concrete bridge deck pavement will be gradually reduced with the increase of operation time, so the reasonable maintenance measures should be taken to ensure the performance and safety of the bridge structures. The objectives and their hierarchical structures from both state position and enterprise position of the decision makers in bridge engineering decision-making problems were discussed. By the existing deterioration model, this paper studies the bridge operation safety maintenance strategy, establishes the mathematical model of the influence of different degrees of maintenance measures on the structural performance, combines with the cost-benefit theory, establishes the maintenance risk decision criteria for the decision makers with different objectives, and makes the decision on the selection of the bridge deck pavement scheme based on the enterprise position through an example.

Sign in / Sign up

Export Citation Format

Share Document