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AGRADECIMENTOSAgradeço em especial ao meu orientador Prof. Dr. Faiçal Massad pelas horas despendidas nos seus atendimentos e pela importância da sua orientação e ensinamentos que muito contribuíram para o meu aprendizado.Ao meu chefe e professor da graduação, Prof. Dr. Antônio Sérgio Damasco Penna, que muito me incentivou, auxiliou na escolha do tema deste trabalho e que tornou possível o meu contato com os ensaios dilatométricos e a realização dos ensaios feitos no Campo Experimental da USP.Aos funcionários da Damasco Penna, que contribuíram com desenhos, relatórios entre outros e em especial ao Técnico da empresa José Simões o qual realizou o ensaio de DMT no Campo Experimental da USP e muito me explicou sobre o funcionamento do equipamento.A minha família e namorado por me confortar e dar incentivo e em especial ao meu irmão Deyvis que me ajudou na digitalização das figuras e na elaboração das listas.Agradeço a Deus pela força nos momentos difíceis e a todos que em geral conviveram comigo nestes 2 últimos anos, os quais de alguma forma contribuíram para esta dissertação ou apenas souberam compreender esta fase que passei. O objetivo desta pesquisa é apresentar uma alternativa de se projetar com auxílio de ensaios dilatométricos e obter resultados tão bons ou melhores do que os obtidos até o presente momento com as sondagens à percussão e, principalmente, com o intuito de apresentar mais uma ferramenta como suporte para os projetistas. ABSTRACTIn Brazil, it is employed almost exclusively the "N" (number of blows required to drive the sampler the last 30 cm into the soil) of SPT to calculate and estimate the bearing capacity and settlement in piles. The field tests provide quick estimates of the geotechnical parameters for the foundation designs, this practice has been growing slowly in some of Civil ConstructionCompanies. The use of Flat Dilatometer Test in the country is very rare and it is expected that this work will contribute to increase its use among us.In this work is shown that a better characterization of the site can be obtained with DMT.With the flat dilatometer test, the foundation designs may be carried out within a more precise base and in some cases economy may be achieved.The current work starts with a bibliography review of the flat dilatometer test. It also contemplates recent papers about the subject. The geotechnical parameters of the soil were supplied through DMT's, allowing the employment of the classical concepts of Soil Mechanics in theoretical methodologies of bearing capacity prediction and the elastic settlements of piles tested in full size at the Foundation Experimental Site of EPUSP.The aim of this research is to present an alternative to design with the help of dilatometer test, obtaining as good results or even better than the ones achieved so far with the Standard Penetration Test, and mainly to show one more tool as a support to the designers. LISTA DE FIGURAS METODOLOGIA E SÍNTESE DOS CAPÍTULOSA metodologia deste trabalho envolve basicamente três etapas, descritas a segui...
AGRADECIMENTOSAgradeço em especial ao meu orientador Prof. Dr. Faiçal Massad pelas horas despendidas nos seus atendimentos e pela importância da sua orientação e ensinamentos que muito contribuíram para o meu aprendizado.Ao meu chefe e professor da graduação, Prof. Dr. Antônio Sérgio Damasco Penna, que muito me incentivou, auxiliou na escolha do tema deste trabalho e que tornou possível o meu contato com os ensaios dilatométricos e a realização dos ensaios feitos no Campo Experimental da USP.Aos funcionários da Damasco Penna, que contribuíram com desenhos, relatórios entre outros e em especial ao Técnico da empresa José Simões o qual realizou o ensaio de DMT no Campo Experimental da USP e muito me explicou sobre o funcionamento do equipamento.A minha família e namorado por me confortar e dar incentivo e em especial ao meu irmão Deyvis que me ajudou na digitalização das figuras e na elaboração das listas.Agradeço a Deus pela força nos momentos difíceis e a todos que em geral conviveram comigo nestes 2 últimos anos, os quais de alguma forma contribuíram para esta dissertação ou apenas souberam compreender esta fase que passei. O objetivo desta pesquisa é apresentar uma alternativa de se projetar com auxílio de ensaios dilatométricos e obter resultados tão bons ou melhores do que os obtidos até o presente momento com as sondagens à percussão e, principalmente, com o intuito de apresentar mais uma ferramenta como suporte para os projetistas. ABSTRACTIn Brazil, it is employed almost exclusively the "N" (number of blows required to drive the sampler the last 30 cm into the soil) of SPT to calculate and estimate the bearing capacity and settlement in piles. The field tests provide quick estimates of the geotechnical parameters for the foundation designs, this practice has been growing slowly in some of Civil ConstructionCompanies. The use of Flat Dilatometer Test in the country is very rare and it is expected that this work will contribute to increase its use among us.In this work is shown that a better characterization of the site can be obtained with DMT.With the flat dilatometer test, the foundation designs may be carried out within a more precise base and in some cases economy may be achieved.The current work starts with a bibliography review of the flat dilatometer test. It also contemplates recent papers about the subject. The geotechnical parameters of the soil were supplied through DMT's, allowing the employment of the classical concepts of Soil Mechanics in theoretical methodologies of bearing capacity prediction and the elastic settlements of piles tested in full size at the Foundation Experimental Site of EPUSP.The aim of this research is to present an alternative to design with the help of dilatometer test, obtaining as good results or even better than the ones achieved so far with the Standard Penetration Test, and mainly to show one more tool as a support to the designers. LISTA DE FIGURAS METODOLOGIA E SÍNTESE DOS CAPÍTULOSA metodologia deste trabalho envolve basicamente três etapas, descritas a segui...
In this study, focus is given on a selected project site. This site is located at Jadavpur University, Saltlake Campus, area situated in Kolkata city of India. The subject site comprises building structures with isolated footing. The soil investigation was carried out by two different approaches i.e., cone penetration test (CPT), and Marchetti Flat Dilatometer Test (DMT). The study describes a comparative study of undrained cohesion (Cu), angle of internal friction (Φ), constrain modulus (M) measured from CPT and DMT. Apart from that settlement analysis also been done for two different sizes of foundation e.g. (3M X 1M), (4M X 1M) by DMT Settlement software and PLAXIS2D. For providing the subsoil model for the investigation area, all the DMT and CPT results were compared with each other
The evaluation of deformation and strength parameters of Holocene organic soils obtained from DMT dilatometer tests based on empirical relationships and ANN Artificial Neural Networks is presented. The evaluation of undrained shear strength τfu, deformation modulus E0.1% and initial shear modulus G0 of Eemian organic soils obtained from DMT dilatometer tests and SDMT seismic dilatometer tests is given, and then its comparison with the values obtained from triaxial tests for the design of underground structures supported by diaphragm walls of the stations of the underground line II in Warsaw, is shown.
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