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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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28 Mar 2006
TL;DR: In this paper, the authors investigated the scale effect in the Mohr-Coulomb model by calculating the filtration coefficient from data obtained in tests performed under the conditions of one-dimensional consolidation in terms of consolidation coefficient cv, compressibility av and volume compressibility mv, average particle size D10, and void ratio e.
Abstract: The methods of calculating the filtration coefficient k from data obtained in tests performed
under the conditions of one-dimensional consolidation in terms of consolidation
coefficient cv , compressibility av and volume compressibility mv, average particle size D10, and void ratio e are investigated. The evaluated k used in the PLAXIS software system is taken for comparison. The filtration coefficients determined by different methods were
used to study the scale effect in the Mohr-Coulomb model. The excess pore pressure for different diameter to height ratios of a sample was in better agreement with the values
predicted by using k determined in PLAXIS. This is explained in part by the variability of the filtration coefficient during consolidation.
Cites background from "Foundation analysis and design"
...uexcess is also obtained by multiplying the unit weight of water by the soil height [8]....
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TL;DR: In this paper , an overview of the consequences of dynamic soil-structure interaction (SSI) on building structures and the available modelling techniques to resolve SSI problems is provided.
Abstract: The present article aims to provide an overview of the consequences of dynamic soil-structure interaction (SSI) on building structures and the available modelling techniques to resolve SSI problems. The role of SSI has been traditionally considered beneficial to the response of structures. However, contemporary studies and evidence from past earthquakes showed detrimental effects of SSI in certain conditions. An overview of the related investigations and findings is presented and discussed in this article. Additionally, the main approaches to evaluate seismic soil-structure interaction problems with the commonly used modelling techniques and computational methods are highlighted. The strength, limitations, and application cases of each model are also discussed and compared. Moreover, the role of SSI in various design codes and global guidelines is summarized. Finally, the advancements and recent findings on the SSI effects on the seismic response of buildings with different structural systems and foundation types are presented. In addition, with the aim of helping new researchers to improve previous findings, the research gaps and future research tendencies in the SSI field are pointed out.
TL;DR: In this paper , an analysis was carried out on variations in anchor length, tensile strength and vertical spacing of the reinforcement elements, namely the geogrid, which was then modeled with sand and clay reinforcement soil.
Abstract: ABSTRACTThe advantages of MSE walls are simple construction techniques, have aesthetic value and material resistance and are more economical. In this study, analysis was carried out on variations in anchor length, tensile strength and vertical spacing of the reinforcement elements, namely the geogrid, which was then modeled with sand and clay reinforcement soil. The analysis is carried out with the help of a finite element program, which will result in the value of the lateral deformation of the wall. Based on the analysis, the anchor length and tensile strength of the geogrid, the greater the anchor length and tensile strength, the smaller the resulting lateral deformation. Whereas at vertical distance, the results obtained are just the opposite. The results also show that the use of clay soils tends to be more stable in resisting lateral forces than sandy soils. Then in an effort to reduce the value of lateral deformation that occurs, further considerations can be focused on the selection of tensile strength or vertical spacing rather than the length of the anchorage. The results also produce a correlation equation that can be used to predict and determine the value of horizontal deformation according to the desired variation value. ABSTRAKKelebihan dinding MSE ialah teknik konstruksi yang sederhana, punya nilai estetika dan ketahanan material serta lebih ekonomis. Pada penelitian ini, analisis dilakukan terhadap variasi panjang penjangkaran, kuat tarik dan spasi vertikal elemen perkuatannya yaitu geogrid, yang kemudian dimodelkan dengan tanah perkuatan pasir dan lempung. Analisis dilakukan dengan bantuan program metode elemen hingga, yang akan menghasilkan nilai deformasi lateral dari dinding MSE untuk dianalisis. Berdasarkan analisis, pada panjang penjangkaran dan kuat tarik geogrid, semakin besar nilai panjang penjangkaran dan kuat tariknya, maka semakin kecil deformasi lateral yang dihasilkan. Sedangkan pada jarak vertikal, hasil yang didapat justru sebaliknya. Perbandingan hasil juga didapat dari dua jenis tanah perkuatan yang berbeda, yang mana dapat disimpulkan bahwa pengunaan jenis tanah lempung cenderung lebih stabil dalam menahan gaya lateral dibandingkan dengan jenis tanah pasir. Kemudian untuk upaya mengurangi nilai deformasi lateral yang terjadi, pertimbangan lebih lanjut dapat difokuskan pada pemilihan kuat tarik ataupun spasi vertikalnya dibanding pada panjang penjangkarannya. Dari hasil analisis juga menghasilkan persamaan korelasi sehingga dapat digunakan untuk memprediksi dan menentukan nilai deformasi horizontal sesuai dengan nilai variasi yang diinginkan.