Field monitoring study of an integral abutment bridge supported by prestressed precast concrete piles on soft soils

Kong, Bo; Cai, C.S.; Kong, Xuan

doi:10.1016/j.engstruct.2015.09.004

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…In addition, they pointed out that the rotational movement was considered as the primary movement mode for the abutment when the horizontal earth pressure ratcheting was observed. However, in addition to Huntley and Valsangkar (2013), Kong et al (2015) and Lawver et al (2000) observed that translation was the primary abutment movement mode for some IABs. Kong et al (2015) found the horizontal earth pressures behind the abutment decreased at the same movement in the second and third years as compared with those pressures in the first year, and they attributed this phenomenon to the soil disturbance and softening when it was pushed against by the abutment in the first year.…”

Section: Steel H-pile-supported Abutmentmentioning

confidence: 97%

“…However, in addition to Huntley and Valsangkar (2013), Kong et al (2015) and Lawver et al (2000) observed that translation was the primary abutment movement mode for some IABs. Kong et al (2015) found the horizontal earth pressures behind the abutment decreased at the same movement in the second and third years as compared with those pressures in the first year, and they attributed this phenomenon to the soil disturbance and softening when it was pushed against by the abutment in the first year. Earth pressure ratcheting was not observed behind the abutment by Civjan et al (2013) either.…”

Section: Steel H-pile-supported Abutmentmentioning

confidence: 97%

“…Frosch et al (2006) observed that the CFT-supported abutments translated and rotated very little due to temperature changes, and they attributed smaller abutment movements than expected to the backfill restraint, the pile resistance, and the friction from the approach slab. In addition, Kong et al (2015) found that the abutment rotation only contributed to 10% the total abutment movements due to the temperature increases. In addition to compaction, moisture content, and backfill type, the geometric configuration of a bridge (e.g., different elevations for two abutments in an IAB) could cause the movement differences between the two abutments (Abendroth et al, 2007).…”

Section: Frame Bridge Abutmentmentioning

confidence: 99%

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Integral bridge abutments in response to seasonal temperature changes: State of knowledge and recent advances

Líu

Han

Parsons

2022

Front. Built Environ.

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Expansion and contraction of integral abutment bridges due to temperature changes force integral bridge abutments (IBAs) to move toward and away from the backfill, thus increasing horizontal earth pressures behind the abutments and inducing bending moments on pile foundations. This paper presents the state of knowledge and recent advances in understanding the behavior of IBAs in response to temperature changes including abutment movement, pile response, and horizontal earth pressure behind the abutment, examines the effect of bridge skew on the behavior, and discusses possible measures to mitigate temperature change-induced problems for IBAs. Field data show that both bending moments of piles near the bottom of abutments and axial loads of piles fluctuated with temperature. Redistribution of dead loads among bridge components due to planar temperature gradients and earth pressure changes behind the abutment contributed to axial load fluctuations in piles. Magnitude and distribution of horizontal earth pressures behind the abutment depend on factors such as abutment movement and abutment movement mode. Most of the current design methods overestimated the horizontal earth pressures at the bottom of the abutment during bridge expansion. Compressible inclusions placed behind the abutment, geosynthetic-reinforced backfill, and lightweight backfill in place of typical aggregate backfill are helpful to reduce horizontal earth pressures behind the abutment at high temperatures and temperature change-induced backfill settlements.

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Section: Steel H-pile-supported Abutmentmentioning

confidence: 97%

Section: Steel H-pile-supported Abutmentmentioning

confidence: 97%

Section: Frame Bridge Abutmentmentioning

confidence: 99%

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Integral bridge abutments in response to seasonal temperature changes: State of knowledge and recent advances

Líu

Han

Parsons

2022

Front. Built Environ.

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“…Thermal loads greatly affect bridge performance, as found in the previous experimental [5][6][7][8] and numerical [8][9][10][11][12][13][14][15] studies and in damage to in-service bridges [16][17][18].…”

Section: Introduction 1background and Motivationmentioning

confidence: 99%

Influence of Construction Joint and Bridge Geometry on Integral Abutment Bridges

et al. 2021

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Although integral abutment bridges (IABs) have become a preferred construction choice for short- to medium-length bridges, they still have unclear bridge design guidelines. As IABs are supported by nonlinear boundaries, bridge geometric parameters strongly affect IAB behavior and complicate predicting the bridge response for design and assessment purposes. This study demonstrates the effect of four dominant parameters: (1) girder material, (2) bridge length, (3) backfill height, and (4) construction joint below girder seats on the response of IABs to the rise and fall of AASHTO extreme temperature with time-dependent effects in concrete materials. The effect of factors influencing bridge response, such as (1) bridge construction timeline, (2) concrete thermal expansion coefficient, (3) backfill stiffness, and (4) pile-soil stiffness, are assumed to be constant. To compare girder material and bridge geometry influence, the study evaluates four critical superstructure and substructure response parameters: (1) girder axial force, (2) girder bending moment, (3) pile moment, and (4) pile head displacement. All IAB bridge response values were strongly related to the four considered parameters, while they were not always linearly proportional. Prestressed concrete (PSC) bridge response did not differ significantly from the steel bridge response. Forces and moments in the superstructure and the substructure induced by thermal movements and time-dependent loads were not negligible and should be considered in the design process.

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Parametric study of an integral abutment bridge supported by prestressed precast concrete piles

Kong

Cai

Zhang

2016

Engineering Structures

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Field monitoring study of an integral abutment bridge supported by prestressed precast concrete piles on soft soils

Cited by 7 publications

References 13 publications

Integral bridge abutments in response to seasonal temperature changes: State of knowledge and recent advances

Integral bridge abutments in response to seasonal temperature changes: State of knowledge and recent advances

Influence of Construction Joint and Bridge Geometry on Integral Abutment Bridges

Parametric study of an integral abutment bridge supported by prestressed precast concrete piles

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