Investigation of the Resistance of Pile Caps and Integral Abutments to Lateral Loading PDF Download
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Author: Robert L. Mokwa
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 66
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Book Description
Author: Robert L. Mokwa
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 66
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Book Description
Author: Robert L. Mokwa
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 204
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Author: Kyle M. Rollins
Publisher:
ISBN:
Category : Lateral loads
Languages : en
Pages : 50
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Book Description
This study investigated the increase in passive force produced by compacting a dense granular fill adjacent to a pile cap or abutment wall when the surrounding soil is in a relative loose state. Lateral load tests were performed on a pile cap with three backfills to evaluate the static and dynamic behavior. One backfill consisted of loose silty sand while the other two consisted of dense gravel zones 3 ft. (0.91 m) and 6 ft. (1.82 m) wide between the pile cap and the loose silty sand. The 3 ft. and 6 ft. wide dense gravel zones increased the lateral resistance by 75% to 150% and 150% to 225%, respectively, relative to the loose silty sand backfill. Despite being thin relative to the overall shear length, the 3 ft. and 6 ft. wide gravel zones increased lateral resistance to 59% and 83%, respectively, of the resistance that would be provided by a backfill entirely composed of dense gravel. The dynamic stiffness for the pile cap with the gravel zone decreased about 10% after 15 cycles of loading, while the damping ratio remained relatively constant with cycling. Dynamic stiffness increased by about 10% to 40% at higher deflections, while the damping ratio decreased from an initial value of about 0.30 to around 0.26 at higher deflections.
Author:
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 200
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Book Description
Author: Lymon C. Reese
Publisher: CRC Press
ISBN: 1439894302
Category : Technology & Engineering
Languages : en
Pages : 529
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Book Description
The complexities of designing piles for lateral loads are manifold as there are many forces that are critical to the design of big structures such as bridges, offshore and waterfront structures and retaining walls. The loads on structures should be supported either horizontally or laterally or in both directions and most structures have in common t
Author: Kyle M. Rollins
Publisher:
ISBN:
Category : Lateral loads
Languages : en
Pages : 138
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Book Description
Author: Robert J. Frosch
Publisher: Joint Transportation Research Program
ISBN: 9781622600120
Category :
Languages : en
Pages : 149
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Book Description
Integral abutment (IA) construction has become the preferred method over conventional construction for use with typical highway bridges. However, the use of these structures is limited due to state mandated length and skew limitations. To expand their applicability, studies were implemented to define limitations supported by rational analysis rather than simply engineering judgment. Previous research investigations have resulted in larger length limits and an overall better understanding of these structures. However, questions still remain regarding IA behavior; specifically questions regarding long-term behavior and effects of skew. To better define the behavior of these structures, a study was implemented to specifically investigate the long term behavior of IA bridges. First, a field monitoring program was implemented to observe and understand the in-service behavior of three integral abutment bridges. The results of the field investigation were used to develop and calibrate analytical models that adequately capture the long-term behavior. Second, a single-span, quarter-scale integral abutment bridge was constructed and tested to provide insight on the behavior of highly skewed structures. From the acquired knowledge from both the field and laboratory investigations, a parametric analysis was conducted to characterize the effects of a broad range of parameters on the behavior of integral abutment bridges. This study develops an improved understanding of the overall behavior of IA bridges. Based on the results of this study, modified length and skew limitations for integral abutment bridge are proposed. In addition, modeling recommendations and guidelines have been developed to aid designers and facilitate the increased use of integral abutment bridges.
Author: Ross W. Boulanger
Publisher:
ISBN:
Category : Earthquake engineering
Languages : en
Pages : 210
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Book Description
Author: Michael Tomlinson
Publisher: CRC Press
ISBN: 146659263X
Category : Technology & Engineering
Languages : en
Pages : 611
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Book Description
Written to Eurocode 7 and the UK National Annex Updated to reflect the current usage of Eurocode 7, along with relevant parts of the British Standards, Pile Design and Construction Practice, Sixth Edition maintains the empirical correlations of the original—combining practical know how with scientific knowledge —and emphasizing relevant principles and applications of soil mechanics and design. Contractors, geotechnical engineers and engineering geologists responsible for designing and constructing piled foundations can find the most current types of pile, piling equipment, and relevant methods in this latest work. The book summarizes recent changes, including new codified design procedures addressing design parameters and partial safety factors. It also presents several examples, many based on actual problems. Broad and Comprehensive In Its Coverage Contains material applicable to modern computational practice Provides new sections on the construction of micropiles and CFA piles, pile-soil interaction, verification of pile materials, piling for integral bridge abutments, use of polymer stabilising fluids, and more Includes calculations of the resistance of piles to compressive loads, pile groups under compressive loading, piled foundations for resisting uplift and lateral loading, and the structural design of piles and pile groups Covers marine structures, durability of piled foundations, ground investigations, and pile testing Addresses miscellaneous problems such as machinery foundations, underpinning, mining subsidence areas, geothermal piles, and unexploded ordnance Pile Design and Construction Practice, Sixth Edition serves as a comprehensive guide for practicing geotechnical engineers and engineering geologists. This text also works as a resource for piling contractors and graduate students studying geotechnical engineering.
Author:
Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 904
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Book Description
