National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Geocomposite drainage for the purpose of drainage on transport infrastructure objects
Macan, Tomáš ; Zedník, Petr ; Stryk, Josef ; Vodáček, Ondřej ; Kašpar, Martin ; Hubík, Petr
This methodology describes in detail the design, dimensioning and application of geocomposite drainage for the purpose of drainage on transport infrastructure objects. In addition to conventional systems, such as drainage layers made up of unbound, permeable materials, geocomposites are increasingly encountered on construction sites. Drainage geocomposite is a geosynthetic with drainage function, able to drain water in the plane in which it is installed for this purpose due to its composite structure. It consists of a drainage core and core protection. Very little space is devoted to drainage geocomposites in Czech standards and technical regulations. Therefore, this methodology deals in more detail with the design and application of drainage geocomposites, summarizes knowledge and procedures from various, mainly foreign, sources and is intended to help their wider and technically correct use in practice. It gives details, sample sheets and specific examples of implementation that supplement the information given in the technical regulations for drainage. The methodology was prepared within project TE01020168 - Centre for Effective and Sustainable Transport Infrastructure (CESTI), with state support of the Czech Technology Agency within the Centre of Competence Program. This methodology is intended primarily for the transport infrastructure owners and administrators, designers and contractors of transport infrastructure objects.
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Alternative methods for foundation the circular tank in fine-grained soils
Vodáček, Ondřej ; Zdražil,, Karel (referee) ; Miča, Lumír (advisor)
Foundations on unbearable and yielding subsoil require such actions as to achieve both desired bearing capacity and limited settlement. Issue is presented at foundation the circular tank in saturated fine-grained soils, circular tank in Klobouky u Brna in particular. Comparison analysis is performed for alternative methods (shallow foundation, vibro stone columns, deep soil mixing, pile foundation). Differential and total settlement, time-depending analysis and baseplate stress state (bending moment, shear force) are assessed for each alternative. Pile foundation provides the best results regarding total and differential settlement, but baseplate is also under high puncture shear stress. Vibro stone columns seem suitable due to time-depending analysis of settlement, on the other hand settlement reductions are not just as good. Deep soil mixing provides satisfactory alternative for both pile foundation and vibro stone columns. Under such circumstances shallow foundation is not suitable.
Sheeting of Foundation Pit
Vodáček, Ondřej ; Chalmovský, Juraj (referee) ; Glisníková, Věra (advisor)
First part of the thesis talks about pit sheeting in general, including shafts and trenches as well as pits, however pits are the very main topic and therefore described in details. This part also discusses earth pressure and groundwater issues as applied loads, yet only marginally. Second part demonstrates a particular sheeting structure and its calculation. All presumptions are established here, including double-anchored sheet pile wall geometry, spoken earth pressure loads and groundwater loads plus heavy equipment load during a construction. The calculating process is shown using computer softwares (Plaxis 2D, GEO5) and also in a non-software way using just pen and paper. At the very end of thesis an ultimate limit state (ULS) of sheet piles is assessed, software and non-software results are compared to each other and discussed.

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