Considerando a necessidade de soluções sustentáveis para a destinação de solos de escavação de obras em áreas urbanas, este estudo apresenta a caracterização de materiais de escavação recebidos em um aterro de resíduos de construção civil (RCC) localizado na Região Metropolitana de São Paulo (MRSP). As amostras foram classificadas visualmente como predominantemente solo de escavação ou mistura de diferentes tipos de RCC, e submetidas a testes de caracterização química, mineralógica, ambiental e geotécnica. Os materiais de escavação destinados ao aterro são compostos, principalmente, por mistura de solos e outros tipos de RCC. Materiais cimentícios estão presentes em todas as frações granulométricas das amostras. As propriedades geotécnicas dos solos de escavação não são prejudicadas pela mistura com outros tipos de RCC. Os materiais são basicamente granulares e bem graduados, com resistência mecânica adequada para algumas aplicações geotécnicas ou de pavimentação. Nitrato e sulfato dissolvidos podem poluir aquíferos e águas superficiais; entretanto, as concentrações observadas não representam risco à saúde. No caso de concentrações superiores aos valores máximos permitidos pela regulamentação de resíduos, a avaliação do risco a possíveis receptores deve ser efetuada conforme o uso pretendido da construção. Foi sugerido um critério preliminar de triagem de materiais de escavação para potenciais reusos na RMSP. / Considering the need of sustainable solutions for disposal of excavation soils from construction works in urban areas, this study presents characterization of excavation materials received in a CDW landfill located in the Metropolitan Region of São Paulo (MRSP). Samples were visually classified as predominantly excavation soil or mixtures of different types of CDW, and submitted to chemical, mineralogical, environmental and geotechnical characterization tests. The excavation material disposed of in the landfill is mainly composed of a mixture of soils and other types of CDW. Cementitious materials are present in all grain size fractions. Geotechnical properties of excavation soils are not impaired by the mixture with other types of CDW. The materials were basically granular and well-graded, with appropriate mechanical resistance for some geotechnical or pavement applications. Dissolved nitrate and sulfate may pollute aquifers and superficial waters; however, the observed concentrations do not represent health concern. In the case of concentrations higher than the maximum allowed values, risk assessment to possible receptors shall be carried out according to the intended construction purpose for potential reuse screening. A preliminary criteria screening for potential reuses was suggested for excavation materials of the MRSP.

Considerando a necessidade de soluções sustentáveis para a destinação de solos de escavação de obras em áreas urbanas, este estudo apresenta a caracterização de materiais de escavação recebidos em um aterro de resíduos de construção civil (RCC) localizado na Região Metropolitana de São Paulo (MRSP). As amostras foram classificadas visualmente como predominantemente solo de escavação ou mistura de diferentes tipos de RCC, e submetidas a testes de caracterização química, mineralógica, ambiental e geotécnica. Os materiais de escavação destinados ao aterro são compostos, principalmente, por mistura de solos e outros tipos de RCC. Materiais cimentícios estão presentes em todas as frações granulométricas das amostras. As propriedades geotécnicas dos solos de escavação não são prejudicadas pela mistura com outros tipos de RCC. Os materiais são basicamente granulares e bem graduados, com resistência mecânica adequada para algumas aplicações geotécnicas ou de pavimentação. Nitrato e sulfato dissolvidos podem poluir aquíferos e águas superficiais; entretanto, as concentrações observadas não representam risco à saúde. No caso de concentrações superiores aos valores máximos permitidos pela regulamentação de resíduos, a avaliação do risco a possíveis receptores deve ser efetuada conforme o uso pretendido da construção. Foi sugerido um critério preliminar de triagem de materiais de escavação para potenciais reusos na RMSP. / Considering the need of sustainable solutions for disposal of excavation soils from construction works in urban areas, this study presents characterization of excavation materials received in a CDW landfill located in the Metropolitan Region of São Paulo (MRSP). Samples were visually classified as predominantly excavation soil or mixtures of different types of CDW, and submitted to chemical, mineralogical, environmental and geotechnical characterization tests. The excavation material disposed of in the landfill is mainly composed of a mixture of soils and other types of CDW. Cementitious materials are present in all grain size fractions. Geotechnical properties of excavation soils are not impaired by the mixture with other types of CDW. The materials were basically granular and well-graded, with appropriate mechanical resistance for some geotechnical or pavement applications. Dissolved nitrate and sulfate may pollute aquifers and superficial waters; however, the observed concentrations do not represent health concern. In the case of concentrations higher than the maximum allowed values, risk assessment to possible receptors shall be carried out according to the intended construction purpose for potential reuse screening. A preliminary criteria screening for potential reuses was suggested for excavation materials of the MRSP.

ABSTRACT EFFECT OF INITIAL SUPPORT OF EXCAVATION ON SEISMIC PERFORMANCE OF CUT AND COVER STRUCTURES Rezaei, Hamidreza M.Sc., Department of Civil Engineering Supervisor: Asst. Prof. Dr. Alp Caner MAY 2011, 66 pages The effect of the initial support and its embedment depth, on the seismic performance of cut and cover tunnels is investigated. Cut and cover construction is one of the fastest and cheapest methods for constructing rectangular shallow tunnels. Construction of cut and cover structure in soil usually starts with installation of the initial support of excavation system, which may consists of rigid type of initial supports such as tangent piles or secant piles. These systems usually remain in place after completion of the final structure. However, to simplify the design, it is a common practice to ignore the contribution of initial support. In this study the effect of initial support of excavation on the seismic performance of cut and cover tunnels is investigated by means of a detailed dynamic finite element analysis. Three different tunnel geometries, three soil types and three acceleration histories were considered Results of the study show that depending on the soil stiffness (soft, medium, or stiff soil), the dynamic response of the tunnel deformations are affected significantly by the initial support of excavation. The effect of the initial support diminishes as the quality of the soil improves. Therefore, dynamic analyses are recommended for the final design of this type of structures especially in soft soils.

The Blanka tunnel has two boring sections: Brusnice tunnel and Královská obora tunnel. Both tunnels were boring in difficult geologycal conditions, but the geology conditions of these tunnels are not same. Also they had not the same hazards during boring. There was used a spectrum of different technical works with hazard reduction purpose and safety process of boring. There were three serious accidents, wnich everyone made a creater on the surface, but they have not the same causes. This text has a task to describe a geological survey before and during the boring of both tunnels. How other reasons affected the process of boring? How the tunnels were bored? What events preceded the everyone of three major failure? This text does not deal with economical things of boring and effects of specific personal influence on the process of boring. Key words Tunnel, excavation, Blanka, Brusnice, Letná, Stromovka park, Vltava river, underground water, geology, ordovik, New Austrian Tunnelling method, pilot tunnel, calotte, bench, bottom, arche, bolt, lining, grouting, collapse of ceiling, failure, tube, shale, quarzite, soil, loess, ballast, clay

The thesis deals with Komenského Street sports hall construction in Lysá nad Labem. Although partially dealing with construction of all parts, in detail it studies gym construction, focusing on time management, technology and resources of implementation. The thesis is divided into the drawing and text parts. The former includes site facilities design and building situation. The latter consists of the main part construction project implementation study, itemized budget, time schedule, technological regulations, inspection and testing plan for the implementation of the main construction part 1st floor reinforced concrete columns and walls, construction machines and mechanisms design as well as time and financial schedule.