National Repository of Grey Literature 19 records found  1 - 10next  jump to record: Search took 0.00 seconds. 
Přehled využití počítačových modelů pro simulaci utužení zemědělské půdy
This bachelor thesis deals with types of simulation software which could be used to study the behavior of soil under load and describes the process of creating models and simulations. The introductory chapter focuses on the soil's characteristics. The following chapter provides an overview of selected software, brief definitions of how they work, and how to work with them. They are generally divided into three categories. Programs with the finite element method solver, applications with the pseudo-continuous Söhne model, and software based on separate particle models such as the discrete element method
Construction technological project of sports hall construction
Tkáč, Jiří ; Vlčková, Jitka Laura (referee) ; Diaz, Yvetta (advisor)
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.
Design of Light Tandem Roller
Paška, Tomáš ; John, David (referee) ; Rubínová, Dana (advisor)
The master thesis deals with the design of a light tandem roller with an electric drive. The final design of the machine is designed in regard to the knowledge from design and technical analysis and the shortcomings of current rollers. The purpose of this work is to design a tandem roller which will respect the ergonomic requirements of the operator.
Měření vertikálního zatížení pod jednotlivými nápravami traktorů s připojenou nesenou technikou
ŠÁLENÝ, Miroslav
This bachelor thesis solves problems of vertical load under each tractor's axle with attached mounted agricultural technology. The aim of this work is to describe the impact of modern agricultural machinery and its impact on the agglomeration of agricultural land and the reasons for the penetration. Then it describes the methods that limit soil mitigation. In the practical part, several load measurements of tractors with agricultural support technology were carried out under the front and rear axles. Then the calculations reckoned the weight acting on one square centimeter. The results of the measurements were evaluated at the end of the work.
Porovnání orebné a bezorebné technologie zpracování půdy z hlediska jejího zhutnění
MACH, Václav
The bachelor thesis focuses on technologies of soil cultivation which are nowadays most frequently used in our country and what is their influence in soil compaction. It describes reasons of the origins of soil compaction, impacts of the compaction and the effect of compaction on soil as a unit. It also focuses on procedure? against unwanted compaction or its following elimination. Subsequently, the thesis describes basic work operations which are plowing and aeration. There are details of the principle how the plough works, basic types of ploughs and the way how we can divide plowing. There are also methods of plowing which are applied in different conditions on land. Last but not least, the thesis points out advantages and disadvantages of this most common soil cultivation. It deals with technologies of aeration as well as it deals with machines which are able to cultivate soil or with technologies of soil cultivation and their advantages and disadvantages in work without a plough. The field experiment which has been done for drawing up of this bachelor thesis focuses on comparison of ploughing and non-ploughing technologies of soil cultivation in a way of its compaction. There is evaluation of the penetrometric resistance, of the achieved depth in measurement and the soil moisture. These values have been measured on a field which was divided according to the technology of soil cultivation. The first part was done conventionally with the plough and in the second part the plough was replaced with the aeration. The results of the measurement were then compared with the whole soil profile of the measurement, then in the depth of 20 cm and finally with rest the horizon of measurement. Values and comparisons of the individual measurements are for better illustration noted in tables and marked on graph.
Utužení půdy jako důsledek činnosti zemědělské techniky
This diploma work is dealing with the issue of compacted arable land made by agricultural equipment, in the Czech Republic. The first part of the thesis introduces factors that causes the compacted soil. Then, we are looking at the ways how to prevent the compaction or, on the contrary, how the undesired compaction can be removed or at least minimalized. This is analyzed in detail according to factors that may influence the process of the land compaction, such as the actual weight of the agricultural equipment kit combination, the choice of the correct tires and the economy of plant growing.
Experimental testing of elasticity modulus for base layers of pavements
Kotas, Vojtěch ; Mondschein,, Petr (referee) ; Stehlík, Dušan (advisor)
The thesis is focused on experimental testing of resilient modulus Mr with triaxial test of chosen unbounded and bounded mixtures used in the sub-base layer of pavement. The reason of testing is to compare results with TP 170 – pavement construction guide containing commonly used values of resilient modulus Mr. Thesis should check if those values are correct and real. For classification of chosen materials there are used another tests like grain size distribution, compaction, California bearing ratio CBR for unbounded mixtures and compressive strength for cement-bounded mixtures.
Compactibility of the materials for subgrade
Kolbábek, Jiří ; Varaus, Michal (referee) ; Stehlík, Dušan (advisor)
This thesis is focused on differences between compaction of fine-grained and coarse-grained soils. It presents selected compaction methods and it describes their principles and implementation procedures. In the practical part is performed classification of both types of soils and then samples are compacted by three methods. The result of this work is to compare the effects of compaction on fine-grained and coarse-grained soil.
Predikce deficitních vlastností půd pro vybranou oblast se specifikací na erozní ohroženost, infiltrační vlastnost, posouzení vodního režimu půd a skeletovitost.
The thesis contains the basic information on the soil composition, properties and functions. Moreover it contains a basic view on the issue of the soil degradation including it's principals, impacts and possibilities of mitigating. Based on the maps with BPEJ codes included, deficient properties of soils were predicted in the Rankov area.
Technological stage of the gross superstructure of the apartment house in Prague - Dablice
Kucsera, Adam ; Kopecký, Lukáš (referee) ; Šlanhof, Jiří (advisor)
The work adresses the technological stage of the gross superstructure of the apartment house in Prague – Dablice. The house consist of reinforced concrete structure on the ground floor, three other floors in a brick form of pramic blocks Porotherm, ceilings above the second and third floor are composed of Spiroll prefabricated ceiling panel and roof structure is made up of gang nail trusses, thanks to this composition of house, it was necessary to address how to storage materials on the site, and also the arrival, departure and parking of vehicles. Technological regulativ is focused on concreting of the reinforced concrete monolithic framework.

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