In situ tests simulating traffic-load-induced settlement of alluvial silt subsoil

Cui, Xinzhuang; Zhang, Na; Zhang, Jiong; Gao, Zhijun

doi:10.1016/j.soildyn.2013.11.010

Cited by 36 publications

(12 citation statements)

References 14 publications

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“…Shi et al [28] measured the dynamic stress of subgrade induced by trucks and suggested that the stress amplitude was from 0 to 100 kPa on the top of the subgrade. Cui et al [29] found that the cumulative settlement of subgrade obviously increased with increasing wheel load. In this paper, in situ tests on the section of QiqiharNenjiang Highway in Heilongjiang Province, China, are presented.…”

Section: Introductionmentioning

confidence: 99%

Field Measurement of Dynamic Compressive Stress Response of Pavement‐Subgrade Induced by Moving Heavy‐Duty Trucks

Zhang

Geng

et al. 2018

Shock and Vibration

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This paper presents the dynamic compressive stress response of pavement-subgrade induced by moving heavy-duty trucks. In order to study the distribution characteristic of dynamic pressure of pavement-subgrade in more detail, truck loadings, truck speeds, and dynamic pressure distributions at different depths were monitored under twenty-five working conditions on the section of Qiqihar-Nenjiang Highway in Heilongjiang Province, China. The effects of truck loading, truck speed, and depth on dynamic compressive stress response can be concluded as follows: (1) increasing truck loading will increase the dynamic pressure amplitude of subgrade-pavement and dominant frequencies are close to the characteristic frequencies caused by heavy-duty trucks at the speed of 70 km/h; (2) as truck speed increases, the dynamic pressure amplitudes of measuring points have an increasing tendency; the dynamic pressure spectrums are also significantly influenced by truck speed: the higher the truck speed, the wider the spectrum and the higher the dominant frequencies; (3) as depth increases, the dynamic pressure amplitudes of measuring points decrease rapidly. The influence of the front axle decreases gradually until disappearing and the compressive stress superposition phenomenon caused by rear double axles can be found with increasing depth.

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Section: Introductionmentioning

confidence: 99%

Field Measurement of Dynamic Compressive Stress Response of Pavement‐Subgrade Induced by Moving Heavy‐Duty Trucks

Zhang

Geng

et al. 2018

Shock and Vibration

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“…Differential settlement of subgrade soils is undesirable because it typically leads to road damage [1][2][3][4], e.g., pavement cracks, rutting, and uneven road surfaces. Subgrade soil settlement can be primarily attributed to two loads: the static load due to the weight of the embankment and the dynamic load due to traffic loading [1].…”

Section: Introductionmentioning

confidence: 99%

“…Subgrade soil settlement can be primarily attributed to two loads: the static load due to the weight of the embankment and the dynamic load due to traffic loading [1]. A common strategy for controlling the settlement is to minimize the embankment height [1], which reduces the static load. However, this strategy may have undesirable side effects, especially in the case of an underlying soft subsoil.…”

Section: Introductionmentioning

confidence: 99%

“…In this method, the dynamic effect is overlooked, and the settlement might be under-predicted [9][10][11]. A dynamic load is fundamentally different from a static load in at least two aspects: (1) it has a greater stress response [6,12] and thus a deeper influence depth, and (2) it is characterized by accumulated deformation and internal forces [13][14][15]. Previous studies have found that there is a maximum depth of influence beyond which the dynamic stress is negligible for practical purposes [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…However, above the maximum depth of influence, the dynamic stress and strain in the subsoil will not completely dissipate in the unloading state and will accumulate. The accumulation effect of the traffic load may eventually cause excessive settlement of the pavement and subgrade systems [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Determination of traffic-load-influenced depths in clayey subsoil based on the shakedown concept

Tang

Chen

Sang

et al. 2015

Soil Dynamics and Earthquake Engineering

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Fiber Bragg grating sensors for subgrade deformation monitoring in seasonally frozen regions

Meng

Sun

Wang

2019

Struct Control Health Monit

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Summary Excessive subgrade permanent deformation resulting from heavy vehicle traffic and freezing–thawing cycles is one of the primary causes of road damage in seasonally frozen regions. In this paper, an implanted cantilever sensing beam based on fiber Bragg gratings (FBGs) is proposed for subgrade deformation monitoring. Two optical fibers with inscribed FBGs were adhered to the opposite external sides of a PVC pipe which was selected as substrate. After laboratory calibration tests, the cantilever sensing beam was installed horizontally through the subgrade of a testing section. The beam will be bended driven by the deformation of the soils under the action of vehicles, and the deformation is recorded by the FBGs and calculated through principles of continuum mechanics. The subgrade deformation is considered to be the deflection of the sensing beam. The feasibility of the developed method was validated based on the results of field testing conducted for a three‐year period. It has been found that the combination of freezing–thawing cycles with heavy vehicle loading magnifies the extent of permanent subgrade deformation. The developed FBG‐based implanted cantilever sensing beams are thereby demonstrated to provide a feasible and effective approach for the in situ monitoring of subgrade deformation.

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In situ tests simulating traffic-load-induced settlement of alluvial silt subsoil

Cited by 36 publications

References 14 publications

Field Measurement of Dynamic Compressive Stress Response of Pavement‐Subgrade Induced by Moving Heavy‐Duty Trucks

Field Measurement of Dynamic Compressive Stress Response of Pavement‐Subgrade Induced by Moving Heavy‐Duty Trucks

Determination of traffic-load-influenced depths in clayey subsoil based on the shakedown concept

Fiber Bragg grating sensors for subgrade deformation monitoring in seasonally frozen regions

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