Seismic bearing capacity of shallow foundations resting on rock masses subjected to seismic loads

Zhou, Xiaoping; Gu, Xin-Bao; Yu, Mao-Hong; Qi, Qian

doi:10.1007/s12205-015-0283-6

Cited by 35 publications

(20 citation statements)

References 30 publications

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“…with the active thrust theory, the corresponding inclination of the stop force is also fixed in its critical state with the same theory. (7) The theory of the kinematic method of rigid solids reflects well the nature of ruptures of surface foundations by punching and gives realistic results.…”

Section: Discussionmentioning

confidence: 97%

An attempt to apply the kinematic method of rigid solids in the study of bearing capacity of shallow foundations

Bencheikh

Aidoud

Zohra

et al. 2021

Selected Scientific Papers - Journal of Civil Engineering

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In the geotechnical engineering field, shallow foundations are frequently needed to ensure good fieldwork stability. They are also intended to permanently and uniformly transmit all load pressure on the seating floor. However, numerous mechanical constraints, such as bearing capacity of foundations, durability, stability, design of shallow foundations, lead, unfortunately, to a serious realization challenge. Finding an adequate solution presents the main goal and effort of both scholars and professionals. Indeed, the corresponding drawback is observed through the high number of reported damages that occurred in the structure of foundations and the punching failure. The failure mechanisms of shallow foundations, verified in full size or on scale models, show “sliding surfaces” and rigid (solid) blocks, which can be described with the kinematic method of rigid solids. The main objective of this study is the application of the kinematic method of rigid solids in the study of the stability of shallow foundations with respect to punching, the purpose of which is to determine the bearing capacity factors Nc, N γ, and the passive earth pressure coefficient Kp of foundations. In this context, two mechanical models have been proposed with 5 and 7 rigid solids, and a program developed via the MathCAD environment is applied to check the validity of the two previous models. The kinematic method of rigid solids gives results very close and comparable with that of Caquot/Kerisel for the factors of the bearing capacity and passive earth pressure coefficient - the ratio Kp - according to the five- and seven-solid model.

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Section: Discussionmentioning

confidence: 97%

An attempt to apply the kinematic method of rigid solids in the study of bearing capacity of shallow foundations

Bencheikh

Aidoud

Zohra

et al. 2021

Selected Scientific Papers - Journal of Civil Engineering

View full text Add to dashboard Cite

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“…To get the upper bound solution, the construction of velocity is required in the method. e implementation of the kinematic method of limit analysis depends on the following fundamental inequality [26]:…”

Section: Kinematic Methods Of Limitmentioning

confidence: 99%

The Analysis of Anchoring Mechanism of Rock Slope in Two Layers Based on the Nonlinear Twin‐Shear Strength Criterion

Wang

et al. 2021

Advances in Civil Engineering

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The nonlinear strength criterion is introduced into the paper firstly, and then the geometric anchoring characteristic model of rock slope separated from two layers according to rock type with the fracture surface of log-spiral curve considering nonlinear twin-shear criterion subjected to seismic loads is established. Finally, some correlated influential parameters are analyzed, and the conclusions are drawn, showing that the intermediate principal stress has great influence on the total anchoring force of bolt P, so when different criteria are selected, the influence of intermediate principal stress should not be omitted. The effects of thickness ratio h1/h2 on total anchoring force increase gradually with the increase of inclination angle ϕ . The total anchoring force P decreases gradually with the increase of inclination angle ϕ and surcharge load q. The total anchoring force increases gradually with the increase of horizontal seismic acceleration coefficients kh and geometric coefficients mi and GSI.

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“…Many researchers in many countries have provided many methods to assess the quality of surrounding rocks [8] in recent years. e fractal theory is supplied by Du et al [9] and Point et al [10] to assess the surrounding rocks' quality based on the fractal characteristics of the rock structure face. e fractal dimension about over and under excavation of rock mass is calculated by Boadu, etc., [11] to seek the relationship between structural features and the category of surrounding rocks.…”

Section: Introductionmentioning

confidence: 99%

The Application of Variable Fuzzy Sets Theory on the Quality Assessment of Surrounding Rocks

Shao

Gao

et al. 2022

Advances in Materials Science and Engineering

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The quality assessment of surrounding rocks has tremendous influences on engineering construction, so its investigation is significant. The uniaxial compressive strength of rocks σ c , the integrity coefficients of rock mass K V , the conditions of the structural plane S S , the seepage amount of groundwater W , and the intersection angle θ between the axis line and structural plane are selected as the quality assessment index of surrounding rocks at first. Then, the entropy weight-variable fuzzy sets model is introduced. Second, the relative membership degree matrix about the variable fuzzy sets is established, and the weight coefficients are determined based on the entropy weight method. Finally, the fracture behavior level of surrounding rocks is determined using the mean ranking feature value. The conclusions demonstrate that the results obtained based on the variable fuzzy sets method are consistent with the current specification; its accuracy arrives at 80%. Compared with the traditional way, its assessment process has higher reliability and efficiency. So, it could provide a new alternate way to assess the risk level in civil engineering accurately.

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Seismic bearing capacity of shallow foundations resting on rock masses subjected to seismic loads

Cited by 35 publications

References 30 publications

An attempt to apply the kinematic method of rigid solids in the study of bearing capacity of shallow foundations

An attempt to apply the kinematic method of rigid solids in the study of bearing capacity of shallow foundations

The Analysis of Anchoring Mechanism of Rock Slope in Two Layers Based on the Nonlinear Twin‐Shear Strength Criterion

The Application of Variable Fuzzy Sets Theory on the Quality Assessment of Surrounding Rocks

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