Effects of Increasing Truck Weight on Steel Bridges PDF Download
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Author: Eric Bruce Corwin
Publisher:
ISBN:
Category : Iron and steel bridges
Languages : en
Pages : 314
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Book Description
Author: Eric Bruce Corwin
Publisher:
ISBN:
Category : Iron and steel bridges
Languages : en
Pages : 314
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Book Description
Author:
Publisher:
ISBN:
Category : Concert programs
Languages : en
Pages : 15
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Book Description
Author: Gongkang Fu
Publisher: Transportation Research Board
ISBN: 0309087597
Category : Bridges
Languages : en
Pages : 135
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Book Description
Author: J. Mohammadi
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 130
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Book Description
Author: Denson T. Yates
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 78
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Book Description
Author: Diego Sebastián Arabbo
Publisher:
ISBN:
Category :
Languages : en
Pages : 420
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Book Description
Author: Scott M. Wood
Publisher: Purdue University Press
ISBN: 9781622601189
Category : Transportation
Languages : en
Pages : 480
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Book Description
A permit truck which exceeds the predefined limit of 108 kips is defined as a superload in Indiana. This study was conducted to examine the long-term effects of superload trucks on the performance of typical slab-on-girder bridges and to assess the likelihood of causing immediate damage. Typical steel and prestressed concrete slab-on-girder type bridges were analyzed using both beam line analysis and detailed finite element models. Furthermore, one prestressed concrete bridge and one steel bridge were instrumented using more than 50 sensors each. Strains and deflections were measured during a live load test, and each bridge was monitored for more than six months. Capacities of the investigated bridges were calculated and compared with the demands generated by various groupings of typical superload trucks. Analysis of the steel and prestressed concrete bridges demonstrated that typical superload trucks up to a gross vehicle weight of 500 kips are not expected to cause any damage or impair the long term performance of the investigated bridges. Serviceability limit states of the prestressed concrete bridges controlled the rating, and the bridges had adequate strength to accommodate all superloads included in the database. However, strength limit states controlled the rating of steel bridges. Long term monitoring of a continuous and a simple span bridge indicated that strains comparable to those of a 366-kip superload truck can be generated by regular truck traffic. The field measurements also demonstrated that the in-service behavior was different than the design assumptions. Furthermore, the AASHTO girder distribution factor equation was found to be conservative for the investigated bridges. Use of a more accurate method such as FEA or the spring analogy method is recommended for the evaluation of bridges traversed by very heavy superload trucks.
Author: Altan Kaya Altay
Publisher:
ISBN:
Category :
Languages : en
Pages : 526
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Book Description
Author: Fred Moses
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 176
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Book Description
Author: Peng Lou
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 255
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Book Description
Highway agencies are responsible for the optimal expenditure of taxpayer dollars allocated to highway infrastructure. Truck size and weight are regulated by federal legislation and every state highway agency has its own legal load limits. Over the last two decades, both the frequency and weight of overweight trucks has kept increasing. Although the AASHTO Load and Resistance Factored Design (LRFD) Bridge Design Specifications mandates a design life of 75 years, the actual service life of bridges is lower and varies from one bridge site to another. Additionally, state agencies issue permits for trucks with gross vehicle weights that are above legal load limits. However, the effect of overweight trucks on the service life of bridge components is not explicitly quantified. This dissertation presents a rational approach to investigate the impact of truck loads on bridges in New Jersey through the utilization of bridge inspection reports, truck weight-in-motion (WIM) data, and the National Bridge Inventory (NBI) database. Actual bridge deterioration modes were identified from their respective inspection reports. Based on the condition ratings from NBI, the expected service life for each bridge component on various highways were estimated. In addition, WIM data in New Jersey were used to extract the loading on bridges. For bridge decks and prestressed concrete (P/C) girders, the correlation between the expected service life and truck loadings was performed and prediction functions for service life were proposed. For steel bridge girder, predicted service life was calculated through the remaining fatigue life assessment. Lastly, Bridge Life Cycle Cost Analysis (BLCCA) was conducted using two contrasting scenarios, one with and the other without overweight trucks, to quantify economic impact of overweight trucks on bridges. The results show that deterioration mode of prestressed concrete (P/C) girders was the corrosion near the beam-ends induced by cracking and spalling while the deterioration mode of reinforced concrete deck was the punching shear failure. Overall, P/C girders have better performances than steel girders. During the lifetime of the bridge, the deterioration of P/C girders would be accelerated once cracking is initiated. The expected service life of P/C bridges was greatly affected by the condition of the bridge deck. Lastly, the results indicated that overweight trucks caused more damage on NJ state highways compared with interstate highways due to a larger proportion of overweight trucks, heavy wheel loads from overweight trucks, and fewer axles per truck.
