Дисертації з теми "Soil-pile interaction in liquefiable"
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Dash, Suresh R. "Lateral pile soil interaction in liquefiable soils." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.543468.
Повний текст джерелаTang, Xiaowei. "Nonlinear Numerical Methods to Analyze Ground Flow and Soil-Pile Interaction in Liquefiable Soil." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/134545.
Повний текст джерелаVarun. "A non-linear dynamic macroelement for soil structure interaction analyses of piles in liquefiable sites." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34718.
Повний текст джерелаChian, Siau Chen. "Floatation of underground structures in liquefiable soils." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610082.
Повний текст джерелаChaudhry, Anjum Rashid. "Static pile-soil-pile interaction in offshore pile groups." Thesis, University of Oxford, 1994. http://ora.ox.ac.uk/objects/uuid:7b4c8d56-184f-4c8d-98c9-2d9c69a1ef55.
Повний текст джерелаTaherzadeh, Reza. "Seismic soil-pile group-structure interaction." Châtenay-Malabry, Ecole centrale de Paris, 2008. http://www.theses.fr/2008ECAP1096.
Повний текст джерелаDespite the significant progress in simple engineering design of surface footing with considering the soil-structure interaction (SSI), there is still a need of the same procedure for the pile group foundation. The main approach to solve this strongly coupled problem is the use of full numerical models, taking into account the soil and the piles with equal rigor. This is however a computationally very demanding approach, in particular for large numbers of piles. The originality of this thesis is using an advanced numerical method with coupling the existing software MISS3D based on boundary element (BE), green's function for the stratified infinite visco-elastic soil and the matlab toolbox SDT based on finite element (FE) method to modeling the foundation and the superstructure. After the validation of this numerical approach with the other numerical results published in the literature, the leading parameters affecting the impedance and the kinematic interaction have been identified. Simple formulations have then been derived for the dynamic stiffness matrices of pile groups foundation subjected to horizontal and rocking dynamic loads for both floating piles in homogeneous half-space and end-bearing piles. These formulations were found using a large data base of impedance matrix computed by numerical FE-BE model. These simple approaches have been validated in a practical case. A modified spectral response is then proposed with considering the soil-structure interaction effect
Dewsbury, Jonathan J. "Numerical modelling of soil-pile-structure interaction." Thesis, University of Southampton, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.582152.
Повний текст джерелаPeiris, Thanuja Pubudini. "Soil-pile interaction of pile embedded in deep layered marine sediment under seismic excitation." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/75518/1/Thanuja%20Pubudini_Peiris_Thesis.pdf.
Повний текст джерелаTOMBARI, ALESSANDRO. "Seismic response of extended pile shafts considering nonlinear soil-pile interaction." Doctoral thesis, Università Politecnica delle Marche, 2013. http://hdl.handle.net/11566/242686.
Повний текст джерелаSingle column bents on extended pile shafts are widely used in bridges for their economical and technical advantages. Nevertheless, this system is strongly affected by Dynamic Soil- Pile-Structure Interaction. In addition to the lengthening of the fundamental period of the structure, the compliance of the foundation induces a rocking component of the seismic motion experienced by the overall system that cannot be considered by following the procedures of a common seismic design practice. Although advanced models have been developed in order to account for Soil-Pile-Structure Interaction both in the linear and nonlinear range, Winkler-type models represent one of the most feasible approaches. In this work, a Beam on Nonlinear Winkler Foundation model is used to investigate the importance of features typical in soil nonlinear behaviour such as yielding, gapping, soil cave-in and cyclic hardening/degradation effects on the performance of extended pile shafts. A procedure to estimate the model parameters from geotechnical soil characterization is presented. Incremental Dynamic Analyses are performed to evaluate the effects of Ground Motion Duration and soil nonlinearity on the performance of extended pile shafts in various homogeneous and two-layered soil profiles, including saturated clay and sand in either fully dry or saturated state with different levels of compaction. A procedure to perform Incremental Dynamic Analysis, including effects on both site response analysis and on the structural performance, is established. Nonlinear kinematic and inertial interaction effects are analyzed by means of an exhaustive parametric investigation. The significant effects of the rocking component and the Ground Motion Duration on the seismic response of extended pile shafts are demonstrated. Comparisons with results obtained with a linear model are also presented. Finally, some considerations are drawn pointing out grey areas of the common design practice.
Fernandez, Carlos Javier. "Pile-structure interaction in GTSTRUDL." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/21418.
Повний текст джерелаAl-Khazaali, Mohammed. "Soil-Pile, Pile Group Foundations and Pipeline Systems Interaction Behavior Extending Saturated and Unsaturated Soil Mechanics." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/38843.
Повний текст джерелаBalendra, Surendran. "Numerical modeling of dynamic soil-pile-structure interaction." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Thesis/Fall2005/s%5Fbalendra%5F120705.pdf.
Повний текст джерелаGuillement, Claire. "Pile – Soil Interaction during Vibratory Sheet Pile Driving : a Full Scale Field Study." Thesis, KTH, Jord- och bergmekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-136578.
Повний текст джерелаWilson, Daniel W. "Soil-pile-superstructure interaction in liquefying sand and soft clay /." Davis, Calif. : Center for Geotechnical Modeling, Dept. of Civil and Environmental Engineering, University of California, Davis, 1998. http://cgm.engr.ucdavis.edu/download/html.
Повний текст джерелаMattar, Joe. "An investigation of tunnel-soil-pile interaction in cohesive soils /." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112577.
Повний текст джерелаLee, Lin. "Soil-pile interaction of bored and cast in-situ piles." Thesis, University of Birmingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.633219.
Повний текст джерелаHusein, Dima A. "Soil-Pile Interaction of Geothermal Foundation Subjected to Temperature Cycling." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1563974820049641.
Повний текст джерелаLu, Chih-Wei. "Numerical Study of Soil-Pile Interaction during Earthquakes Considering Liquefaction." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/148518.
Повний текст джерелаLi, Peng Loehr J. Erik. "Numerical analysis of pile group within moving soils." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/6691.
Повний текст джерелаStrand, Tommy, and Johannes Severin. "Soil-Structure Interaction of Pile Groups for High-Speed Railway Bridges." Thesis, KTH, Bro- och stålbyggnad, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231413.
Повний текст джерелаPérez-Herreros, Jesús. "Dynamic soil-structure interaction of pile foundations : experimental and numerical study." Thesis, Ecole centrale de Nantes, 2020. http://www.theses.fr/2020ECDN0002.
Повний текст джерелаThe dynamic response of a structure supported by pile foundations is a complex Soil-Structure Interaction (SSI) problem. Under earthquake loading, the piles are subjected to loadings due to the deformation imposed by the soil (kinematic interaction) and to the inertial forces transmitted by the superstructure (inertial interaction). The design of deep foundations under seismic loadings is often carried out by means of conservative methods that aim to assure zero damage of the foundation. Most of these methods consider the behavior of the foundation as linear elastic. As a result, the capability of the foundation to dissipate energy during seismic loading due to nonlinear mechanisms is neglected. This approach was justified in the past due to the lack of information about the nonlinear behavior of foundations and the absence of adapted numerical tools. Such limitations are becoming more and more obsolete, as a relevant number of experimental and numerical results are now available as well as new design methods (Pecker et al. 2012). In this Ph.D, the behavior of single piles and pile groups under seismic loading is studied using both experiments and finite element calculations. Dynamic centrifuge tests are carried out with a multilayered soil profile, several foundation configurations and a series of earthquakes and sinusoidal base shakings. Nonlinear finite element calculations are also performed and compared to experimental results to investigate the ability of current computational models to satisfactorily reproduce the nonlinear response of foundations. A novel macroelement for pile group foundations under seismic loading is developed and numerically validated. It allows taking into account the group effects and their variation with the loading frequency (pile-soil-pile interaction) as well as the nonlinearity developed in the system. Finally, the macroelement model for pile groups is used to perform an Incremental Dynamic Analysis (IDA) of the main pylon of a cable-stayed bridge
Chin, Victor B. L. "The dynamic response of pile-soil interfaces during pile driving and dynamic testing events." Monash University, Dept. of Civil Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/9421.
Повний текст джерелаToma, Tahsin Munir. "A model study of negative skin friction on a fixed base pile in soft clay." Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/919.
Повний текст джерелаKan, J. H.-S. "Behaviour of laterally-loaded piles." Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383277.
Повний текст джерелаAhmed, Mahmoud Nasser Hussien. "Effects of Nonlinear Soil-Structure Interaction on Lateral Behavior of Pile Foundations." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/151949.
Повний текст джерелаBerenguer, Todo-Bom Luis André. "Numerical modeling of soil-pile interaction considering grain breakage in finite deformations." Phd thesis, Ecole Centrale Paris, 2014. http://tel.archives-ouvertes.fr/tel-01000298.
Повний текст джерелаHaskell, Jennifer Jane Margaret. "Guidance for the design of pile groups in laterally spreading soil." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648830.
Повний текст джерелаPetek, Kathryn Ann. "Development and application of mixed beam-solid models for analysis of soil-pile interaction problems /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/10186.
Повний текст джерелаCosta, d'Aguiar Sofia. "Numerical modelling of soil-pile axial load transfer mechanisms in granular soils." Châtenay-Malabry, Ecole centrale de Paris, 2008. http://www.theses.fr/2008ECAP1075.
Повний текст джерелаThe purpose of the work presented in this thesis, which has a theoretical and numerical character, is the analysis and numerical modelling of soil-pile load transfer mechanisms, in granular soils, when the pile is subjected to axial vertical loads. In the three dimensional elastoplastic finite element model used, particular attention is paid to modelling soil-structure interface behavior. The necessary numerical tools were implemented and the existing ones enhanced so that, the analysis of the soil-pile interaction problem is feasible. Two newly implemented 3D constitutive laws, in the GEFDYN finite element code, are proposed: an interface model and, for soil, an axisymmetric formulation of the existing ECP multimechanism model, also known as Hujeux model. The performance of both constitutive models is compared with experimental results. First, using soil-structure direct shear tests and then, using results of static pile load tests of centrifuge physical models. The theoretical formulation and numerical implementation of the constitutive models proved to be adequate for the analysis of the soil-pile load transfer mechanisms for different soil initial states, soil-pile surface roughness conditions, and different geometries. Finally, the applicability of the proposed models, is also studied for a real case study of pile static load tests carried out in the ISC'2 experimental site, at the occasion of the 2nd International Conference on the Site Characterization. Soil’s laboratory characterization tests and in-situ pile static load tests on bored and CFA piles are simulated, and results successfully compared
Anderson, Michael Alan. "A hydrogeochemical investigation of metalliferous coal pile runoff and its interaction with soil and groundwater /." This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-09162005-115028/.
Повний текст джерелаAnderson, Michael A. "A hydrogeochemical investigation of metalliferous coal pile runoff and its interaction with soil and groundwater." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39371.
Повний текст джерелаPh. D.
Mosher, Reed L. "Three-dimensional finite element analysis of sheet-pile cellular cofferdams." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/37876.
Повний текст джерелаPh. D.
Rahmani, Amin. "Three-dimensional nonlinear analysis of dynamic soil-pile-structure interaction for bridge systems under earthquake shakings." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/51269.
Повний текст джерелаApplied Science, Faculty of
Civil Engineering, Department of
Graduate
Bransby, Mark Fraser. "Piled foundations adjacent to surcharge loads." Thesis, University of Cambridge, 1995. https://www.repository.cam.ac.uk/handle/1810/251968.
Повний текст джерелаTheland, Freddie. "Prediction and experimental validation of dynamic soil-structure interaction of an end-bearing pile foundation in soft clay." Licentiate thesis, KTH, Bro- och stålbyggnad, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-291021.
Повний текст джерелаMänsklig verksamhet i urbana miljöer så som väg- och järnvägstrafik, byggnation eller maskindrift inom industri kan ge upphov till vibrationer som sprider sig via marken i närområdet. Dessa vibrationer kan ge upphov till kännbara vibrationer eller påverka vibrationskänslig utrustning i byggnader. I Sverige förekommer ofta mjuka lerjordar ovanpå berg, och inte sällan i tätbebyggda områden. Under sådana jordförhållanden används ofta spetsbärande pålar för grundläggning av byggnader. Det dynamiska verkningssättet för byggnader är beroende av interaktionen mellan jorden och byggnadens grund. Det är därför viktigt att modeller som används för vibrationsanalys i byggnader kan beskriva denna interaktion mellan jord och byggnadsfundament. Syftet med denna avhandling är att experimentellt och via numeriska modeller studera dynamisk jord-struktur-interaktion av ett spetsbärande pålfundament i lera. Jordensmekaniska egenskaper vid små töjningar utvärderas för en lerjord som är avsatt på morän och berg genom både fältförsök och laboratorieanalyser av prover. Informationen kombineras för att konstruera en lagerförd jordmodell av platsen för att beräkna jordens dynamiska respons till följd av en punktlast. Modellen valideras med vibrationsmätningar som utförts på platsen. Studien visar att detaljerad information angående lerans materialdämpning och de mekaniska egenskaperna av jordens översta lager har en stor inverkan på förutsägelser av jordens dynamiska respons vid ytan, speciellt vid stora avstånd från vibrationskällan. Experimentella tester utförs för att mäta dynamiska impedanser av fyra slagna spetsbärande betongpålar. Interaktionen mellan pålarna utvärderas genom att utföra mätningarav de omgivande pålarnas respons till följd av excitering av en påle. Pålgruppen sammanfogas därefter i ett betongfundament och impedanserna samt accelerationer inuti pålarna uppmäts. En numerisk modell baserad på de identifierade mekaniska egenskaperna av jorden upprättas och valideras genom mätningarna. De numeriska resultaten är i god överensstämmelse med de uppmätta vilket styrker användningen av numeriska modeller för att förutsäga interaktionen mellan jord och spetsbärandepålar under de studerade jordförhållandena.
QC 20210302
Al-Younis, Mohamad Jawad K. Essa. "Effect of Soil-Structure Interaction on the Behavior of Offshore Piles Embedded in Nonlinear Porous Media." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/283608.
Повний текст джерелаYuksekol, Umit Taner. "A Simple Assessment Of Lateral Pier Response Of Standard Highway Bridges On Pile Foundations." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608135/index.pdf.
Повний текст джерелаMcCarthy, Donald. "EMPIRICAL RELATIONSHIPS BETWEENLOAD TEST DATA AND PREDICTED COMPRESSION CAPACITY OF AUGERED CAST-IN-PLACE PILES IN PREDOMINANTLY." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2985.
Повний текст джерелаM.S.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Civil Engineering MS
Henriksson, Felix, and Joanna Minta. "Bucket-soil interaction for wheel loaders : An application of the Discrete Element Method." Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-53357.
Повний текст джерелаSutman, Melis. "Thermo-Mechanical Behavior of Energy Piles: Full-Scale Field Testing and Numerical Modeling." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/82438.
Повний текст джерелаPh. D.
Pisano, Marilene. "Interazione dinamica di un palo singolo in terreni a comportamento lineare e non lineare." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1160.
Повний текст джерелаUllberg, Mårten. "Development of a Parallel Finite-element Tool for Dynamic Soil-structure Interaction : A Preliminary Case Study on the Dynamic Stiffness of a Vertical Pile." Thesis, KTH, Bro- och stålbyggnad, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99381.
Повний текст джерелаVenkata, Swamy B. "Stabilisation Of Black Cotton Soil By Lime Piles." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/219.
Повний текст джерелаVenkata, Swamy B. "Stabilisation Of Black Cotton Soil By Lime Piles." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/219.
Повний текст джерелаNordlöf, Anders, and Danny Holmboe. "Pile subjected to lateral load : Analytical hand calculation implemented by programming." Thesis, KTH, Byggteknik och design, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302548.
Повний текст джерелаPålar i samband med grundläggning har sedan en tid tillbaka enligt svensk praxis installerats snedslagna, detta för att med hjälp av pålens axiella bärförmåga motstå yttre horisontell lastpåverkan till följd av exempelvis vindlaster. Att snedställa pålar har visat sig vara problematiskt ur ett flertal olika perspektiv, en lösning som både konstruktörer och entreprenörer efterlängtat är att pålarna istället tillåts installeras rakställda. Detta skulle vara möjligt genom att nyttja pålens transversella bärförmåga som uppstår i samband med sidomotstånd vid interaktion påle-jord. Kunskap kring ett sådant dimensioneringsförfarande i Sverige idag har visat sig vara begränsad och till stor del bestå av ett styrande dokument, nämligen rapport 101 utgiven av Pålkommissionen. I denna studie har en analytisk handberäkningsmetod som återges ur Pålkommissionens rapport implementerats i beräkningsprogrammet Mathcad, detta i syfte att testa och utvärdera metoden utifrån ett flertal olika belastningsfall relaterade till transversell lastpåverkan vid interaktion påle-jord. Avgörande parametrar som skiljt de olika belastningsfallen åt har bl.a. utgjorts av hållfasthetsegenskaper hos friktion- eller kohesionsjord, tvärsnittsdimensioner och armeringsinnehåll hos påle, yttre lastpåverkan i påltopp. Resultaten skiljde sig åt markant beroende på typ av belastningsfall där en majoritet av svaren upplevdes som icke tillförlitliga och till ett flertal olika fall, utifrån vårt försök till implementering, klarade metoden heller inte av att erhålla någon analytisk lösning. Vi finner det därför svårt att tro att den elastoplastiska metoden som återges i rapport 101 i slutändan kommer till någon direkt praktisk nytta, vilket står i tvär kontrast mot ett uppenbart behov där lättillgänglig kunskap inom området efterfrågas.
Shafieezadeh, Abdollah. "Seismic vulnerability assessment of wharf structures." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41203.
Повний текст джерелаCAPATTI, MARIA CHIARA. "Experimental and numerical study on the full scale behaviour of micropiles under lateral loading." Doctoral thesis, Università Politecnica delle Marche, 2017. http://hdl.handle.net/11566/245331.
Повний текст джерелаMicropiles are increasingly used both as new foundation system for buildings in seismic zone, and for the retrofit of existing structures damaged by earthquakes. Hence, it is essential to enhance the knowledge of their dynamic behaviour under horizontal loading. Given the lack of dynamic field tests data, an experimental campaign is carried out, including both two single vertical micropiles and a group of 4 inclined micropiles embedded in alluvial soils. Ambient vibration, impact load, free vibration and forced vibration tests are performed to evaluate the micropiles dynamic behaviour under small to large deformations. Moreover, two-way cyclic horizontal load tests are carried out on the single vertical micropiles to evaluate the evolution of micropile head horizontal stiffness with the number of loading cycles, and with the development of non linear phenomena (among all, the opening of a gap at the soil-micropile interface). To evaluate the influence of loading intensity and typology, execution steps and inclination on the behaviour of micropiles, results are presented in terms of fundamental frequencies, damping and modal shapes obtained from accelerometers at the pile head and strain gages along the shaft. Impedances functions are also experimentally derived for the single micropiles and the group. The experimental data are then compared with numerical results obtained exploiting different models, properly calibrated: a 3-D theoretical approach for the dynamic interaction analysis of vertical and inclined micropile groups is adopted to simulate impact load tests on the single micropiles and on the group. Moreover, different 3-D FE models are developed in a commercial code, having different properties in terms of soil, pile and interface behaviour, to evaluate the response of micropiles in the linear and non-linear range, under dynamic horizontal forces.
Vasilescu, Andreea-Roxana. "Design and execution of energy piles : Validation by in-situ and laboratory experiments." Thesis, Ecole centrale de Nantes, 2019. http://www.theses.fr/2019ECDN0015/document.
Повний текст джерелаEnergy piles, also called thermo-active piles, are an alternative solution to the increase in the global energy demand as well as in mitigating socio-economical stakes concerning the increase of energy costs due to fossil fuels. Energy piles are double purpose structures that allow transferring the loads from the superstructure to the soil and that integrate pipe circuits allowing heat exchange between the pile and the surrounding ground. The objective of this thesis is to identify and quantify the principal parameters involved in the geotechnical design of pile foundations impacted by temperature changes associated with geothermal activation. For this purpose, this research work was organized in 3 experimental campaigns: (i) A full scale load controlled test at Ecole des Ponts Paris-Tech, (ii) Full scale energy piles monitoring under real exploitation conditions at Sept Sorts, (Seine et Marne, France), (iii) Laboratory tests in order to assess the effect of temperature and temperature cycles at the soil-pile interface. The experimental results are used to estimate the effect of geothermal activation of a pile foundation, on its bearing capacity as well as on its long-term exploitation. Finally, preliminary numerical simulations were performed using a thermo-hydro mechanical model, using the finite element method code LAGAMINE able to capture the main phenomena
Ferro, Newton Carlos Pereira. "Uma combinação MEC/MEF para análise de interação solo-estrutura." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-08122017-102331/.
Повний текст джерелаIn the present work a combination of the Boundary Element Method (BEM) and the Finite Element Method (FEM) is used for pile-soil interaction analyses, considering the soil as a homogeneous, three-dimensional and infinite medium. The three-dimensional infinite continuous medium is modeled by the BEM, and the piles are, considered as beam elements, modeled by the FEM. This combination also is used for studying the interaction of plates sitting on a continuous medium. The pile equations generated from the FEM are combined with the medium equations generated from the BEM, resulting a complete equation system. Manipulating properly this equation system, a set of stiffness coefficients for the system soil-pile is obtained. Finally, to make the model more comprehensive, it presented a formulation to take into account the soil nonlinear behavior at the pile interface.
Tamayo, Jorge Luis Palomino. "Simulação numérica da interação solo-estaca pelo método dos elementos finitos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/116709.
Повний текст джерелаDeep foundations using steel or reinforced concrete piles are conmmonly used in large civil engineering structures. Due to the three-dimensional nature of the problem, its boundary conditions and spatial variability of soil properties, it is necessary to employ numerical models that must be able to simulate this problem under seismic loading as well as under quasi static consolidation processes. A three-dimensional numerical model based on the finite element method, for the static, quase-static and dynamic analysis of the soil-pile interaction problem under the small strain assumption is proposed in this work. For this purpose, coupled hexahedral finite elements are used to represent soil and concrete piles. Interface elements are used to simulate slip, bonding and opening processes at the soil-pile interface. Material nonlinear behaviour of the soil and concrete are considered by using the theory of plasticity, where explicit integration schemes are used. A suitable constitutive model based on the generalized theory of plasticity is employed to represent the liquefaction phenomena in sands under cyclic loading. For the concrete pile, a smeared approach is used to represent concrete cracking due to traction stresses, while both an equivalent smeared layer representation or a discrete unidimensional representation can be used for modeling the reinforcing steel. Numerical examples are presented in order to validate the implementation of the numerical model.