Stability of seawalls using modified pseudo-dynamic method under earthquake conditions

Rajesh, B. Giridhar; Choudhury, Deepankar

doi:10.1016/j.apor.2017.04.004

Cited by 21 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The seismic stability analysis of a sea dam is considered in the work [7] taking into account the seismic active soil pressure, seismic inertial force, wave, hydrostatic and hydrodynamic pressures from the perspective of the modified pseudo dynamic method. Dependencies are proposed for the coefficient of stability during shear and tipping.…”

mentioning

confidence: 99%

Аccounting the Seismic Component of the Lateral Pressure of an Heterogeneous Anisotropic Soil on Massive Hydrotechnical Structures

Voytenko¹

2020

BOSACEA

View full text Add to dashboard Cite

Abstract. Strength anisotropy is characteristic of layered soil bases and has been confirmed by numerous tests. The relevance and novelty of this research is to study the effect of the seismic factor on the active pressure of the friable soil medium having strength anisotropy. A numerical experiment was carried out using a specially developed computer program, the algorithm of which used the method for determining the lateral pressure of a heterogeneous anisotropic soil, taking into account the seismic effect. The proposed method is based on the solutions of the classical theory of Coulomb, the seismic component is taken into account on the basis of the static theory of the earthquake stability of structures. We considered a vertically ideally smooth wall in contact with a two-layer incoherent soil medium, the anisotropy of the strength properties of which is represented by hodographs of friction angle. The layers are parallel, no surface load. A numerical research was to determine the parameters of the active pressure of the soil of the lower layer during rotation of the hodograph of friction angle with steps of 300. We used 4 hodographs: 1) φ1=150-200; 2) φ2=200-250; 3) φ3=250-300; 4) φ4=300-350 with a horizontal plane of isotropy. Seismic impact was taken into account by the seismicity coefficient, taken equal to depending on the scale 0.025 (7), 0.05 (8), 0.1 (9). The horizontal orientation of the seismic force and with an angle of 200 to the horizontal plane was set. The obtained results make it possible to evaluate the seismic effect on the lateral pressure of anisotropic soil by comparing it with the corresponding indicators obtained earlier without taking into account the seismic factor. An analysis of computer solutions indicates the increase of the active pressure in seismic conditions by 14%-45% compared with the same indicator, which was determined without taking into account the seismic factor.

show abstract

mentioning

confidence: 99%