Refined numerical modeling of a laterally-loaded drilled shaft in an MSE wall

Huang, Jie; Han, Jie; Parsons, Robert L.; Pierson, Matthew C.

doi:10.1016/j.geotexmem.2013.02.004

Cited by 33 publications

(11 citation statements)

References 11 publications

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“…Thus, with further increase of the depth, the increase of the lateral earth pressure is weakened. The significant increase of the lateral earth pressure in the bottom region is attributable to rotation of the MSE wall, as discussed in Huang et al (2013).…”

Section: Resultsmentioning

confidence: 92%

“…Only the load- (70) Modelling (140) Test (35) Test (70) Test (140) Confining stress: kPa Figure 3. Comparison between numerical modelling and triaxial test data (modified from Huang et al, 2013) Material…”

Section: Resultsmentioning

confidence: 99%

“…According to the study of Huang et al (2013), the vertical stress at the bottom of the MSE was increased because of the rotational effect induced by the shaft. The increase of the vertical stress led to the increase in the lateral earth pressure, since the backfill was compressed vertically.…”

Section: Resultsmentioning

confidence: 99%

“…The interfaces between the drilled shafts and backfill materials were not explicitly simulated for two reasons: the shafts interacted with the backfill primarily through compression, and the tangential relative movement was negligible; and the cap-yield model cannot sustain tension, but can well represent the separation between the drilled shafts and the backfill material (Huang et al, 2013).…”

Section: Interfacesmentioning

confidence: 99%

See 3 more Smart Citations

Modelling of laterally loaded drilled shaft group in mechanically stabilised earth wall

Huang¹,

Han

Rahman

2014

Proceedings of the Institution of Civil Engineers - Geotechnica

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This paper proposes a numerical model, calibrated by a full-scale field test, to investigate the behaviour of a laterally loaded shaft group built within a mechanically stabilised earth wall. The numerical modelling yielded results of the geogrid strain and the lateral earth pressure distributions. It was found that the strain was a maximum at the edge of the each shaft, and decreased rapidly with distance from the shaft. The additional lateral earth pressure induced by the shaft group is non-linear and non-monotonic. The calibrated numerical model was then used to investigate the impacts of various factors on the group effect. It was found that the required minimum spacing to avoid group effect increased with decreasing modulus of the backfill material. The friction angle of the backfill material and the geogrid tensile stiffness did not have a significant influence on the group effect. Based on this study, a formula to estimate the minimum spacing to avoid group effect was developed.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Interfacesmentioning

confidence: 99%

See 2 more Smart Citations

Modelling of laterally loaded drilled shaft group in mechanically stabilised earth wall

Huang¹,

Han

Rahman

2014

Proceedings of the Institution of Civil Engineers - Geotechnica

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“…Table 2. Constitutive model and material properties (Modified after [13]). The backfill soil was modeled using two different constitutive models.…”

Section: Constitutive Modelsmentioning

confidence: 99%

Effect of Lateral Cyclic Loading on Drilled Shaft within an MSE Wall

Huang

Rahman²,

Zheng

et al. 2019

MATEC Web Conf.

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Drilled shafts are often subjected to various lateral loads due to earth pressure, wind loads and/or impact loads. Many studies have investigated the behavior of drilled shafts under lateral loads. However, there is limited study on the effect of cyclic loading on drilled shafts, which is of great importance during a hurricane strike. This paper encompasses a numerical study using three-dimensional (3D) finite difference software, FLAC3D, which investigated interaction between a drilled shaft and an MSE wall under cyclic loading event. The backfill material was simulated by a stress-dependent model, which can account for the hardening due to confining stresses. The interactions between dissimilar materials were represented by frictional interface at the contacts. The numerical simulation scrutinized the effects of soil friction angle and the loading cycles on the performance of the drilled shaft and MSE wall under both loading and unloading conditions. The result indicates that the cyclic loading leads to gradual accumulation of the displacement, which cannot be effectively considered in current design method.

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Recent Advances in Metallic and Geosynthetic Reinforced Soil Walls: A Review

Vindhya

Rajesh

2021

Lecture Notes in Civil Engineering

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Refined numerical modeling of a laterally-loaded drilled shaft in an MSE wall

Cited by 33 publications

References 11 publications

Modelling of laterally loaded drilled shaft group in mechanically stabilised earth wall

Modelling of laterally loaded drilled shaft group in mechanically stabilised earth wall

Effect of Lateral Cyclic Loading on Drilled Shaft within an MSE Wall

Recent Advances in Metallic and Geosynthetic Reinforced Soil Walls: A Review

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