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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, various methods for analysis of pile foundation are discussed in comprehensive manner, and suggestions are recommended on the basis of existing analysis methods, under order to develop an effective and simple approach for design of such foundations.
Abstract: Pile cap foundation is a type of deep foundation. These types of foundations are used when soil, constructional or economical condition makes it necessary to transfer load of structure to the soil strata which are beyond the reach of shallow foundation. Foundation of any structures transfers the total super-structural load to soil. In case of deep foundation, the process of rehabilitation or repair is quite difficult. Hence, it should be designed properly to satisfy strength, serviceability, economic and constructability requirement. Investigation on all parameters related to these requirements is now in process, under order to develop an effective and simple approach for design of such foundations. In the present paper various methods for analysis of pile foundation are discussed in comprehensive manner. Moreover, suggestions are recommended on the basis of existing analysis methods.
5 citations
01 Dec 2004
TL;DR: In this article, feasibility tests were conducted on some promising applications like SOx control in power generation facilities that burn coal, replacement of limestone as an ingredient in portland cement production, dust control on gravel roads, neutralization of industrial wastewater pH, and combination with fly ash or cement in construction fill applications.
Abstract: Disposal of lime sludge remains a major challenge to cities in the Midwest. Disposal of lime sludge from water softening adds about 7-10% to the cost of water treatment. Having effective and safe options is essential for future compliance with the regulations of the State of Iowa and within budget restrictions. Dewatering and drying are essential to all reuse applications as this affects transportation costs and utility. Feasibility tests were conducted on some promising applications like SOx control in power generation facilities that burn coal, replacement of limestone as an ingredient in portland cement production, dust control on gravel roads, neutralization of industrial wastewater pH, and combination with fly ash or cement in construction fill applications. A detailed report and analysis of the construction fills application is presented in the second half of the report. A brief discussion of the results directly follows.
5 citations
TL;DR: In this article, a structural identification method is proposed to assess the integrity of gravity-type caisson structures by analyzing vibration features, which is based on the use of vibration characteristics of the limited DOFs.
Abstract: In this study, a structural identification method is proposed to assess the integrity of gravity-type caisson structures by analyzing vibration features. To achieve the objective, the following approaches are implemented. Firstly, a simplified structural model with a few degrees-of-freedom (DOFs) is formulated to represent the gravity-type caisson structure that corresponds to the sensors\' DOFs. Secondly, a structural identification algorithm based on the use of vibration characteristics of the limited DOFs is formulated to fine-tune stiffness and damping parameters of the structural model. Finally, experimental evaluation is performed on a lab-scaled gravity-type caisson structure in a 2-D wave flume. For three structural states including an undamaged reference, a water-level change case, and a foundation-damage case, their corresponding structural integrities are assessed by identifying structural parameters of the three states by fine-tuning frequency response functions, natural frequencies and damping factors.
5 citations
Cites background or methods from "Foundation analysis and design"
...in which the modulus of subgrade reaction (b) is available for various soil types as reported by Bowles (1996). Note that the modulus has the unit of pressure per length....
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...The modulus of sub-grade reaction of the foundation mound, b, was selected as 9.6 MN/m for medium dense sand (Bowles 1996)....
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...…(1997), the horizontal spring constant (kFj) of the elastic foundation is modeled as the function of the horizontal modulus of subgrade reaction (b), as follows 𝑘𝐹𝑗 = 𝑏𝐿𝑗𝐵𝑗 (5) in which the modulus of subgrade reaction (b) is available for various soil types as reported by Bowles (1996)....
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TL;DR: In this paper, a physics-based method is proposed for simultaneously obtaining the hydraulic conductivity, Young's modulus, and Poisson's ratio of soil materials using the uniaxial consolidation test.
Abstract: A physics-based method is proposed for simultaneously obtaining the hydraulic conductivity, Young’s modulus, and Poisson’s ratio of soil materials using the uniaxial consolidation test. A nonlinear poroelastic model is presented, and the settlement data from consolidation tests are fitted to the model at each load step with the least-squares error method to inverse the parameters. The model results perfectly fit the experimental data in the initial load steps but slightly deviate from the data in later load steps as a result of secondary settlement and a largely increased Young’s modulus. The inversed parameters are compared with those calculated from the uniaxial consolidation test and those found in the literature. The comparison results demonstrate that the inversed parameters are reasonable. The proposed method provides both an estimation of parameters and the parameter-change information during a consolidation test. The method is simple, efficient, and versatile for obtaining poromechanical p...
5 citations
TL;DR: In this paper, an analytical procedure to derive dimensionless charts for the analysis and design of rigid rectangular foundations under axial load and biaxial moment is presented. But the analysis is restricted to shallow rectangular footings, and it is not shown that the proposed closed-form equations are a generalized version of the widely used equivalent width concept proposed by Meyerhof.
5 citations