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Foundation analysis and design
01 Jan 1968-
TL;DR: In this paper, Fondation de soutenagement et al. presented a reference record for Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08.
Abstract: Keywords: Fondation ; Mur de soutenement ; Pieux ; Capacite portante ; Ancrage ; Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08
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TL;DR: In this article , ground improvement technique by using Geosynthetics (geotextile as separator, geogrid as reinforcement, GSB as a filling material) is adopted for two major project buildings.
Abstract: Andhra Pradesh is a well-known coastal state in India, Some of the regions, the ground is soft clay in nature shows the soil has low bearing capacity and high compressibility characteristics, so ground improvement techniques may be a viable solution for the construction of any structure. Geosynthetics are the most often utilized reinforcing material in design of foundation in such soils. The significant design parameters are Modulus of subgrade reaction (K), California bearing ratio (CBR) and Modulus of elasticity (E). In Machilipatnam area, the soil is weak and having high compressibility characteristics. Hence ground improvement technique by using Geosynthetics (geotextile as separator, geogrid as reinforcement, GSB as a filling material) is adopted for two major project buildings. Field tests such as Modulus of subgrade reaction test, Plate load test were conducted over the improved ground to ascertain the quality of improvement. Furthermore, a correlation between K and CBR, E and CBR is established. The corresponding California bearing ratio values are correlated using IRC58-1988. A comparison was made over the untreated ground using correlation of E and CBR from others to know the behaviour of unreinforced and reinforced soils.
TL;DR: In this article , a Sobol sensitivity analysis is employed to identify the importance of parameters in the three-invariant soil model (GeoModel) for finite element simulation, and three commonly used sampling techniques, namely, pseudo-random, quasi-random and Latin-hypercube sampling (LHS), are investigated to determine the efficiency of each sampling technique for sensitivity analysis and identify the critical parameters for the soil model.
Abstract: ABSTRACT A Sobol sensitivity analysis is employed to identify the importance of parameters in the three-invariant soil model (GeoModel) for finite element simulation. Three commonly used sampling techniques, namely, pseudo-random, quasi-random (QR), and Latin-hypercube sampling (LHS), are investigated to determine the efficiency of each sampling technique for sensitivity analysis and identify the critical parameters for the soil model. Among the sampling methods, LHS shows the best sampling uniformity and offers more stable results and faster convergence than other methods. The analysis results also show that Young’s modulus and the initial value for the shear-yield surface are the most critical parameters for the designed outputs, which quantitatively measure the maximum total deformation (MD), plastic deformation (PV), and plastic zone size (VY). The proposed sensitivity analysis framework in this study can be applied to finite element simulations of similar engineering and scientific problems for assessing model parameters’ influence.
TL;DR: In this article , the design process of reinforced concrete retaining walls is investigated under the issue of project location change effect, which becomes a significant requirement to assess the earthquake resistant design depending on the new Turkish Building Earthquake Code-2018 (TBEC-2018).
Abstract: In this paper, the design process of reinforced concrete retaining walls is investigated under the issue of “project location change effect” which becomes a significant requirement to assess the earthquake resistant design depending on the new Turkish Building Earthquake Code-2018 (TBEC-2018). Within this context, in the light of the related code, fourteen different districts which are located in the Anatolian Side of Istanbul Province (Turkey) have been taken into consideration, to search for also the effects of the supported earth fill depth, the unit weight and the shear strength angle of surrounding soil and the external loading conditions. In this way, it has been aimed to focus on the application details of the design code and reflect the outcomes of the analysis in terms of the changes that happened in wall dimensions depending on the locations of project. Besides, with this study, it is aimed to reveal that the definition of type sectional wall will not be possible with the new code. As the result, the influence rates of the investigated project variants have been explained considering site-specific retaining wall design in terms of integrated relations of the design parameters.