In this study, excavation of jet-grouted tunnels in ground with strong time-dependent behavior is analyzed. The constant growth of population has led to a constant increase in the price of lands and thus infrastructures. Underground alternatives are becoming more economical. Furthermore, advances in the construction technology have made it feasible to construct tunnels in difficult ground conditions. By providing a grouted arch ahead of the tunnel face, jet-grouting has proved effective for the stability and performance of tunnels in difficult conditions. Given the limited depth of jet-grouting into the face, the jet-grouted arch is loaded soon after installation, when the rigidity of the grouted material is growing significantly. The simultaneous loading and hardening of the jet-grouting makes the tunnel response depend on the excavation rate. Furthermore, in difficult tunneling conditions, the ground material is associated with highly viscous behavior. This behavior is synonymous with delayed deformation depending on the level and duration of the ground loading by the tunnel excavation. In order to show the importance of the time-dependent behaviors, the full-face and the sequential excavation method are compared using three-dimensional and two-dimensional finite element analyses. First, a three-dimensional model is constructed and its results are validated against available analytical solutions for time-independent behaviors. The hardening of the jet-grouting is then introduced into the model by embedding jet-grouting elements through the analysis. In order to account for the ground viscous behavior, an advanced viscoplastic constitutive model is adopted, numerically implemented in FORTRAN, and used in conjunction with finite element software ABAQUS. The excavation methods are compared for the well documented study case of Tartaiguille tunnel. The results indicate that the full-face method outperforms the sequential method in the studied case by installing the tunnel invert closer to the face. The two-dimensional analysis of the tunnel is conducted by using the convergence-confinement method. To this end, a new approach is introduced to use the method for tunnels in time-dependent conditions. The effect of the jet-grouting hardening and the ground viscous behavior is characterized within the new approach by deriving the ground convergence curves. The reverse dependency of these mechanisms on the tunnel advance rate leads to an optimum advance rate, at which minimum tunnel convergence develops. / text

The subject of the diploma thesis is the stress analysis of the circular and elliptical shaft from material jet grouting. A new advanced constitutive Shotcrete model will be applied on the material jet grouting. In the thesis, the shaft tensile strength factor and the size of the ground pressures will be primarily examined. The practical part of the diploma thesis is completed by the comparison of the analytical and numerical calculation of the normal force of the circular and elliptical shafts.

I have designed the construction of a apartment building with multifunctional usage. A significant element is the internal automatic parking system, which is a relief for the residents of the house on a street crowded with parked cars. On the ground floor is a lucrative cafe with sitting area and two bowling lines. The house contains 18 housing units for 4-6 people. People are attracted by prestigious location with views of the city Brno on the dominant historical monuments and are attracted by a pleasant interior of the apartments, too. They are logically divided into 4 zones - day, night, working and relaxing. For relaxation, they may use the spacious balconies, terraces and a common area in the garden with children's play area. One part of this work is a focus on securing of construction pit and foundation of a building, which is almost a technical delicacy.

The thesis is focused on the reconnstruction of the "Old Bridge“ in Bratislava. Part of the reconstruction is the foundations of a new pier and redevelopment of an existing pier. The introduction provides an overview of methods used for the foundations within the river and from there onwards, the most suitable method haas been selected. The piers foundation is designed in several variants, coupled with the drawings. In conclusion, the variants were compared and the most suitable one was selected.

The topic of the diploma thesis is the elaboration of a construction-technological project for the Underground Parking for the Pradiareň BCT in Bratislava. The work contains a technical report for a construction technology project, a study of the implementation of the main technological stages of the building, solving broader transport relations with the design of the building supply, object time and financial plan, time plan, construction site project, design of main machines, technological regulation for monolithic construction , the balance of workers and main machines, control and test plans for the operation of the monolithic structure and the health and safety plan. As another assignment, I process the item budget of selected technological processes, schematic solution of pilots, selected LEED certification points, noise study, access road technology, scheme of connection of object SO 0.2 to object BCT1 and formwork drawings.

The subject of this Diploma thesis is building and technological project of a residential house in Brno, which contain the implementation of the underground car park and residential building, which has three above-ground floors. Attention is focused mainly on the technological processes of bottom building. Text section contains the technical report on the structural and technological project, study implementation of major technological stages of building, technical report of construction site equipment, technological regulations, inspection and test plan, study of noise, plan health and safety at work, the design of the main building machines and mechanisms including transport routes. The attachment section contain time and financial plan construction-object, time deployment of machines, plan of material resources, time schedule, technology standard, budget, drawings of construction site equipment, verification of tower crane construction and schema of processes concreting.

The master thesis consists of a theoretical part and a practical part. In the theoretical part jet-grouting technology is described briefly. Mechanical properties of jet-grouted piles were characterized. Various estimation methods of ultimate pile bearing capacity are described in this thesis – analytical calculation of ultimate bearing capacity for bored piles and estimation of ultimate pile bearing capacity by analysis of load-displacement curve defined by CHIN (1970; 1972). Load transfer method for piles and hyperbolic load-transfer curve are introduced. As a part of the load-trasfer method analysis, a method of estimating ultimate pile shaft friction called beta method is defined. In the practical part were evaluated several static load tests of jet-grouted piles and were constructed their load-displacemnt curves. Then reverse analysis of the results from static load tests was performed using load-transfer method. Then ultimate pile bearing capacity was estimated using analytical calculation of pile bearing capacity for bored piles and using analysis of load-displacement curve with method by CHIN (1970; 1972). By evaluation of load transfer method and beta method ultimate shaft resistence for each pile was estimated. Results and load-displacement curves were compared.

This master´s thesis solves the constructive - technological project of pavilion of mountain hotel. It is an extension of pool hall. The master´s thesis includes: nail shoring walls, jet grouting, excavation, reinforced concrete base pan. There are technological solutions, especially prescription nail walls and jet grouting. Solution also contains the site facilities, the schedule, the situation with the solution structure of transport routes, itemized budget, proposed mechanical assembly, safety and health at work.

Building Technology project deals with the processing of the necessary documents and documentation for implementation shell of the building of the Academy of Sciences in Prague Dejvice. At the beginning of the technical report on the building technology project, which provides basic information about the construction. Content is the solution of the building construction site by the financial, structural and technological and time. Construction technology solution is based on monolithic work.

Theme of the diploma thesis is a construction technology project extension of the building of the Supreme Court of the Czech Republic in Brno. The content of the diploma thesis is the study of the main technological stages of the main building, solution of wider transport relations with a focus on building supply, objects schedule, time schedule of the main building. The work also includes the project of construction site equipment, design of the main construction machines and mechanisms, technological regulations for special foundations and rough construction, which are supplemented by control and test plans and a plan for securing material resources. As part of other assignments, As part of other assignments, I process occupational health and safety, ecology and environmental protection for selected construction processes, itemized budget for special foundation and rough construction