Analysis of the Reasonable Construction Size of Concrete Bridge Deck

2011 ◽  
Vol 90-93 ◽  
pp. 1027-1032
Author(s):  
Xian Xi Tang ◽  
Xian Zhou Tang ◽  
Yue Xu ◽  
Wei Guo
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Bridge Deck ◽  
Bridge Decks ◽  
Concrete Bridge ◽  
Finite Element Models ◽  
Simply Supported ◽  
Concrete Bridge Deck ◽  
Beam Bridge ◽  
T Beam

In order to study the reasonable thickness and width of bridge decks of concrete T beam bridge, 36 ANSYS finite element models of simply supported concrete T beam were established, stress performance of each models have been analyzed under the centre load. The analysis results indicated that when the bridge deck thickness reached 22cm, it was no much sense of influence of bridge decks stress and deflection change by increasing the thickness of the bridge deck, therefore, the recommended value of deck thickness was about 22cm. Since the width of the bridge deck has little effect of the mechanical properties and stiffness of it, so the recommended values of the bridge decks width should be determined combined with the diaphragm and the integral stiffness of T beam bridge.

Calculation methods of bridge deck for prestressed short rib T-beam bridges

2020 ◽  
pp. 1-13
Author(s):  
Sijia Wang ◽  
Tianlai Yu
Keyword(s):  
Finite Element ◽  
Bridge Deck ◽  
Mechanical Performance ◽  
Test Results ◽  
Analysis Method ◽  
Slab Method ◽  
Element Analysis ◽  
Calculation Results ◽  
Beam Bridge ◽  
T Beam

Because of the low height of the prestressed short rib T-beam bridge and the poor torsion resistance of the main beam, the positive moment in the middle span of the bridge deck will increase correspondingly compared with the normal rib beam bridge. At present, there is little research on the calculation method of the bridge deck of the prestressed short rib T-beam bridge. In this paper, the space finite element method and the continuous one-way slab method are used to calculate the forces on the bridge deck, based on the space finite element method, a finite element elastic supported continuous beam method is proposed to calculate the forces on the bridge deck. By comparing the calculation results of the three methods with the test results, the reasonable calculation method of the bridge deck is studied. The results show that the spatial finite element analysis method can simulate the mechanical performance of the deck of the bridge of the prestressed short rib T-beam bridge well, the stress calculation results are consistent with the test results, and the calculation accuracy is high, which can be used in the actual engineering design; The finite element analysis method of elastic support continuous beam can also simulate the mechanical performance of the deck of the bridge of the prestressed short rib T-beam bridge. The concept of the method is clear, the calculation is convenient, and it is more suitable for the application of engineering design; The calculation results of the continuous one-way slab method are too large to be safe for design.

Impermeable Asphalt Concrete Layer to Protect and Seal Concrete Bridge Decks

2019 ◽  
Vol 2673 (6) ◽  
pp. 355-367 ◽  
Author(s):  
Matthew A. Haynes ◽  
Erdem Coleri ◽  
Shashwath Sreedhar
Keyword(s):  
Asphalt Concrete ◽  
Bridge Deck ◽  
Structural Integrity ◽  
Bridge Decks ◽  
Asphalt Mixture ◽  
The United States ◽  
Concrete Bridge ◽  
Freeze Thaw ◽  
Concrete Bridge Decks ◽  
Concrete Bridge Deck

Deterioration of the concrete bridge deck is one of the most significant problems affecting the service life of bridges in the United States (U.S.). The early failure of asphalt pavement overlays on concrete bridge decks with spray-on waterproofing membranes has been recognized as a significant issue by the Oregon Department of Transportation (ODOT). Potential reasons for the failure of the asphalt overlays were thought to be the poor adhesion between the waterproofing membrane and the asphalt-wearing course, and the material properties of the asphalt layer. Moisture penetration into the asphalt overlay and standing water on the concrete bridge deck result in expansion and contraction at the interface on the bridge deck during freeze-thaw cycles. Expansion and contraction because of freeze-thaw cycles cause debonding at the interface and result in an increased rate of deterioration for the asphalt concrete overlay. Additionally, the de-icing salts used to prevent hazardous roadway surfaces in the winter permeate into the deck and cause corrosion of the steel reinforcement, weakening the structural integrity of the bridge. The main goal of this study is to develop an impermeable asphalt mixture with high cracking and rutting resistance that can seal and protect the concrete bridge deck by preventing water and de-icing salts from penetrating into the concrete deck. Permeability of developed asphalt mixtures was quantified by permeability testing and moisture sensor measurements. Rutting and cracking resistance of the developed impermeable asphalt mixture strategies were also evaluated by conducting flow number (FN) and semi-circular bend (SCB) tests in the laboratory.

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 A framework for life cycle assessment of concrete bridge decks

2021 ◽  
Author(s):  
Fouad Taki
Keyword(s):  
Life Cycle ◽  
Construction Industry ◽  
Bridge Deck ◽  
Raw Materials ◽  
Bridge Decks ◽  
Concrete Bridge ◽  
Lca Methodology ◽  
Concrete Bridge Decks ◽  
Concrete Bridge Deck ◽  
The Impact

he construction industry is the largest contributor to environmental loading, and while development will require more infrastructure to achieve its goals, this will require more construction and hence more pollution. In order to achieve a sustainable development, the construction industry has to reduce its environmental loading and consumption of energy and raw materials. The methodology of Life Cycle Assessment (LCA) can help in quantifying the cradle to grave impact of construction on the environment. This study was performed to develop a model that uses LCA methodology to estimate the environmental impact of concrete bridge decks in North America. The model traces the emissions during the life cycle of a concrete bridge deck, and then calculates the impact of these emissions on the environment. This study was performed to develop a model that uses LCA methodology to estimate the environmental impact of concrete bridge decks in North America. The model traces the emissions during the life cycle of a concrete bridge deck, and then calculates the impact of these emissions on the environment. The model also calculates the energy and raw materials that are consumed during the life cycle of a concrete bridge deck. This model can be used by designers to evaluate alternative bridge deck designs to select the environmentally sound one.

scholarly journals Causes of Early Age Cracking on Concrete Bridge Deck Expansion Joint Repair Sections

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Jared R. Wright ◽  
Farshad Rajabipour ◽  
Jeffrey A. Laman ◽  
Aleksandra Radlińska
Keyword(s):  
Literature Review ◽  
Structural Design ◽  
Bridge Deck ◽  
Bridge Decks ◽  
Early Age ◽  
Concrete Bridge ◽  
Concrete Mixtures ◽  
Curing Methods ◽  
Joint Repair ◽  
Concrete Bridge Deck

Cracking of newly placed binary Portland cement-slag concrete adjacent to bridge deck expansion dam replacements has been observed on several newly rehabilitated sections of bridge decks. This paper investigates the causes of cracking by assessing the concrete mixtures specified for bridge deck rehabilitation projects, as well as reviewing the structural design of decks and the construction and curing methods implemented by the contractors. The work consists of (1) a comprehensive literature review of the causes of cracking on bridge decks, (2) a review of previous bridge deck rehabilitation projects that experienced early-age cracking along with construction observations of active deck rehabilitation projects, and (3) an experimental evaluation of the two most commonly used bridge deck concrete mixtures. Based on the literature review, the causes of concrete bridge deck cracking can be classified into three categories: concrete material properties, construction practices, and structural design factors. The most likely causes of the observed early-age cracking were found to be inadequate curing and failure to properly eliminate the risk of plastic shrinkage cracking. These results underscore the significance of proper moist curing methods for concrete bridge decks, including repair sections. This document also provides a blueprint for future researchers to investigate early-age cracking of concrete structures.

scholarly journals A Study on Long-Term Mechanical Properties and Durability in Metakaolin Concrete Bridge Deck

2011 ◽  
Vol 15 (3) ◽  
pp. 125-133
Author(s):  
Eun Ik Yang ◽  
Myung Yu Kim ◽  
Joo Kyoung Yang ◽  
Hae Geun Park ◽  
Yoon Suk Choi
Keyword(s):  
Mechanical Properties ◽  
Bridge Deck ◽  
Concrete Bridge ◽  
Concrete Bridge Deck

scholarly journals A framework for life cycle assessment of concrete bridge decks

2021 ◽  
Author(s):  
Fouad Taki
Keyword(s):  
Life Cycle ◽  
Construction Industry ◽  
Bridge Deck ◽  
Raw Materials ◽  
Bridge Decks ◽  
Concrete Bridge ◽  
Lca Methodology ◽  
Concrete Bridge Decks ◽  
Concrete Bridge Deck ◽  
The Impact

he construction industry is the largest contributor to environmental loading, and while development will require more infrastructure to achieve its goals, this will require more construction and hence more pollution. In order to achieve a sustainable development, the construction industry has to reduce its environmental loading and consumption of energy and raw materials. The methodology of Life Cycle Assessment (LCA) can help in quantifying the cradle to grave impact of construction on the environment. This study was performed to develop a model that uses LCA methodology to estimate the environmental impact of concrete bridge decks in North America. The model traces the emissions during the life cycle of a concrete bridge deck, and then calculates the impact of these emissions on the environment. This study was performed to develop a model that uses LCA methodology to estimate the environmental impact of concrete bridge decks in North America. The model traces the emissions during the life cycle of a concrete bridge deck, and then calculates the impact of these emissions on the environment. The model also calculates the energy and raw materials that are consumed during the life cycle of a concrete bridge deck. This model can be used by designers to evaluate alternative bridge deck designs to select the environmentally sound one.

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