The Bridge over the Chomutovka River Valley

2017 ◽  
Vol 259 ◽  
pp. 130-134
Author(s):  
Radim Cihlář ◽  
Martin Nožička ◽  
Jakub Aubrecht
Keyword(s):  
Czech Republic ◽  
Pile Foundation ◽  
River Valley ◽  
Box Girder ◽  
The Czech Republic ◽  
Load Bearing ◽  
The Road ◽  
Planning Agency ◽  
The Village ◽  
Bearing Structure

The purpose of this article is to describe the construction of the bridge spanning the Chomutovka river valley as a part of the road I/27 bypassing the village of Velemyšleves. The investor of this project is Ředitelství silnic a dálnic ČR, správa Chomutov (Directorate for Roads and Motorways of the Czech Republic, division Chomutov). The general constructor of the entire project is the association of companies Silnice Group a.s. and AZ sanace a.s., the constructor of the foundations and the pile foundation is AZ Sanace a.s. and the constructor of the bridge is SMP CZ, a.s. The project execution documentation was carried out by the planning agency NOVÁK & PARTNER s.r.o. The designer and lead construction engineer of the project is Doc. Ing. Lukáš Vráblík, Ph.D.The structure is a seven-span bridge with a total length of 537 m. The load bearing structure, constructed using cantilever casting and supporting construction, consists of a seven-span continuous box girder with two frame connections. The whole structure is to be opened for public use by the end of this year.

scholarly journals The first records of Aegopinella ressmanni (Westerlund, 1883) in the Czech Republic extends its distribution range northwards

2008 ◽  
Vol 7 ◽  
pp. 47-50
Author(s):  
Michal Horsák ◽  
Jan Myšák
Keyword(s):  
Czech Republic ◽  
River Valley ◽  
Distribution Range ◽  
The Czech Republic ◽  
Terrestrial Snail ◽  
First Time ◽  
The Village ◽  
The Town

A topsoil-dwelling Eastern Alpine terrestrial snail Aegopinella ressmanni (Westerlund, 1883) was found for the first time in the Czech Republic at nine sites in E Bohemia. Abundant populations of the species occurred in wet habitats of the Tichá Orlice River valley between the village of Hnátnice and the town of Brandýs nad Orlicí. These Czech populations were found 250 km far from the known northernmost sites in Germany and Austria.

scholarly journals The Impact of the COVID-19 Movement Restrictions on the Road Traffic in the Czech Republic during the State of Emergency

2021 ◽  
Vol 2021 ◽  
pp. 1-20
Author(s):  
Milan Simunek ◽  
Zdenek Smutny ◽  
Michal Dolezel
Keyword(s):  
Czech Republic ◽  
Road Traffic ◽  
The State ◽  
Communication Strategy ◽  
Case Based Reasoning ◽  
State Of Emergency ◽  
The Czech Republic ◽  
The Road ◽  
Traffic Speed ◽  
On The Road

The COVID-19 pandemic crisis has impacted numerous areas of people’s work and free-time activities. This article aims to present the main impacts of the COVID-19 movement restrictions on the road traffic in the Czech Republic, measured during the first epidemic wave, i.e., from 12 March to 17 May 2020. The state of emergency was imposed by the Czech government as a de jure measure for coping with the perceived crisis, although the measure eventually resulted only in a quite liberal de facto form of stay-at-home instruction. Unique country-scale traffic data of the first six months of 2020 from 37,002 km of roads, constituting 66% of all roads in the Czech Republic, were collected and analyzed. For the prediction of the prepandemic traffic conditions and their comparison with the measured values in the period of the state of emergency, a long-term traffic speed prediction ensemble model consisting of case-based reasoning, linear regression, and fallback submodels was used. The authors found out that the COVID-19 movement restrictions had a significant impact on the country-wide traffic. Traffic density was reduced considerably in the first three weeks, and the weekly average traffic speed in all road types increased by up to 21%, expectedly due to less crowded roads. The exception was motorways, where a different trend in traffic was found. In sum, during the first three weeks of the state of emergency, people followed government regulations and restrictions and changed their travel behavior accordingly. However, following this period, the traffic gradually returned to the prepandemic state. This occurred three weeks before the state of emergency was terminated. From a behavioral perspective, this article briefly discusses the possible causes of such discrepancies between de jure and de facto pandemic measures, i.e., the governmental communication strategy related to loosening of movement restrictions, media reality, and certain culture-related traits.

scholarly journals Systems for intelligent parking of trucks at motorway rest areas as part of Construction 4.0

2021 ◽  
Vol 1203 (3) ◽  
pp. 032052
Author(s):  
Pavel Krupík
Keyword(s):  
Czech Republic ◽  
Swot Analysis ◽  
Traffic Information ◽  
The Czech Republic ◽  
The Road ◽  
Rest Areas ◽  
The Subject ◽  
Detection Technologies

Abstract The Road and Motorway Directorate of the Czech Republic is introducing a system of smart truck parking at motorway rest areas. Thanks to the use of detection technologies in the place of rest and connection with NDIC, where traffic information is collected and processed, it is possible to include this technology in the Construction 4.0 concept. The subject of this article is a brief description of these systems, including examples of use. With the help of SWOT analysis, the strengths and weaknesses, respectively opportunities and threats of these systems will be identified with the help of experts.

Long-Term Monitoring of Composite Bridge across Odra River on the D47 Freeway

2016 ◽  
Vol 691 ◽  
pp. 259-271
Author(s):  
Miloš Zich ◽  
Petr Daněk ◽  
Bohuslav Slánský
Keyword(s):  
Czech Republic ◽  
Strain Gauges ◽  
Structural System ◽  
Box Girder ◽  
The Czech Republic ◽  
Odra River ◽  
Composite Bridge ◽  
Long Term Monitoring ◽  
Term Monitoring

The article presents the results and analysis of long-term monitoring of the bridge across the Odra River on the D47 freeway in the Czech Republic near Ostrava. Structural system of this bridge is formed by a continuous composite box girder with spans from 49 to 102 m. Total length of the bridge is 402 m. The bridge was equipped by strain gauges and force sensors during the construction. The monitoring has been kept on for 10 years. The measured values are compared with the results of calculations.

Laodicea

2003 ◽  
Author(s):  
Clyde E. Fant ◽  
Mitchell G. Reddish
Keyword(s):  
Natural History ◽  
River Valley ◽  
Small Rivers ◽  
Book Of Revelation ◽  
Commercial Success ◽  
The Road ◽  
Pliny The Elder ◽  
Ancient City ◽  
The Village ◽  
The City

Ancient Laodicea, once a thriving city, now lies in ruins, awaiting a more thorough excavation than it has so far received. Overshadowed by the more spectacular nearby site of Hierapolis (Pamukkale), Laodicea receives the occasional busload of tourists who stop to view the remains of this city that the book of Revelation imagined as having boasted, “I am rich, I have prospered, and I need nothing” (3:17). Laodicea is south of the modern village of Goncalï and north of the village of Eskihisar. The site is located on a plateau between two small rivers that are tributaries of the Lycus River. The Asopus River runs along the western part of the ancient city, while the Caprus River runs along the east. To visit the site, take the road from Denizli that leads to Pamukkale. Two different roads from the Denizli-Pamukkale highway lead to Laodicea, both of which are on the left and marked with a sign indicating the way to Laodicea. Laodicea is situated 10 miles from Colossae and 6 miles from Hierapolis. This area was a part of the region of Phrygia, although it was sometimes considered a part of Lydia or Caria. Pliny the Elder claims that Laodicea was built on the site of an earlier settlement known as Diospolis and later as Rhoas (Natural History 5.105). Because of its location near the Lycus River, the city was known as Laodicea ad Lycum in order to differentiate it from several other cities named Laodicea. Of particular importance to the commercial success of the city was its position at the junction of two roads—one that ran from the Aegean coast near Ephesus through the Meander River valley and on to the Euphrates, and another that ran from Pergamum to Sardis and then to Perga and Attalia (modern Antalya). Antiochus II, the Seleucid king (r. 261–246 B.C.E.), founded the city during the middle of the 3rd century B.C.E. He named the city in honor of his wife Laodice, whom he later divorced. After the Romans, with the aid of the Pergamene kingdom, defeated Antiochus III at Magnesia in 189 B.C.E., Laodicea came under the control of Pergamum.

Road vegetation in Central Europe — an example from the Czech Republic

Biologia ◽  
2008 ◽  
Vol 63 (6) ◽  
Author(s):  
Božena Šerá
Keyword(s):  
Czech Republic ◽  
Central Europe ◽  
Herbaceous Species ◽  
Vegetation Types ◽  
Digitaria Sanguinalis ◽  
The Czech Republic ◽  
The Road ◽  
Puccinellia Distans ◽  
Roadside Vegetation

AbstractRoad nets are man-made constructions in the open landscape with a specific vegetation accompaniment in a verge or band along the road or in a divider strip. A determination of six basic vegetation types of bands along roads is possible in Central Europe (tree lines, planting area, forest stand, early successful growth, bushes band, grassy-herbal associations). In the Czech Republic, grassy-herbal communities growing on road verges are mainly formed by perennials, hemicryptophyts, and species with tendency towards pollination by insects and to anemochory and exozoochory. 40% woody and 25% herbaceous species which are non-native for Central Europe form a part of them. Three halophyte species are growing in closed lines along asphalt: Puccinellia distans, Digitaria sanguinalis and Spergularia rubra.Roads and highways should be made and used with respect to the ecological potential of roadside vegetation. However, the road net functioned as a corridor for invasive (planting or spreading) plant species.

scholarly journals Spatial Modelling of Kaolin Deposit Demonstrated on the Jimlíkov-East Deposit, Karlovy Vary, Czech Republic

2021 ◽  
Vol 10 (11) ◽  
pp. 788
Author(s):  
Marcela Jarošová ◽  
František Staněk
Keyword(s):  
Czech Republic ◽  
Dynamic Model ◽  
Input Data ◽  
3D Model ◽  
Spatial Modelling ◽  
The Czech Republic ◽  
Development Evaluation ◽  
The Village ◽  
Mining Exploration ◽  
Kaolin Deposit

The present study is focused on spatial modelling of a kaolin deposit in Karlovy Vary, Czech Republic, and the methodical procedure of development, evaluation and visualization of a 3D model are described step by step. The implementation of this methodology is performed in Visual Studio 2019 with use of the Surfer and Voxler objects from Golden Software. This methodology combined with the newly developed software (Kaolin_A and Kaolin_Viz programs) allow a user to create a variant dynamic model for the same or similar types of deposits. It enables a quick update of the model when changing the input data, based on the new mining exploration or when changing the modelling parameters. The presented approach leads to a more advanced evaluation of deposits, including various estimates of reserves according to pre-specified usability conditions. The efficiency of the developed methodology and the software for the evaluation of the deposit are demonstrated on the kaolin deposit Jimlíkov-East, located near the village Jimlíkov about 5 km west of Karlovy Vary in the Czech Republic.

scholarly journals Assessment of Priorities of Construction of High-Speed Rail in the Czech Republic in Terms of Impacts on Internal and External Integration

2020 ◽  
Vol 20 (2) ◽  
pp. 217-241
Author(s):  
Vilém Pařil ◽  
Milan Viturka
Keyword(s):  
Czech Republic ◽  
High Speed ◽  
Quality Parameters ◽  
Point Of View ◽  
Passenger Transport ◽  
High Speed Rail ◽  
The Czech Republic ◽  
Metropolitan Regions ◽  
The Road ◽  
Primary Basis

AbstractThe priorities assessment for the planned construction of high-speed rail/HSR in the Czech Republic in terms of impacts on internal and external integration is a though-provoking topic not only from the technical and economic, but also from the social and geographical point of view. Its primary basis is the application of the gravity model, according to which the planned route C Prague-Wien has the most significant potential in passenger transport. Then following routes are A Prague-Berlin, B Prague-München, and D Brno-Katowice. Subsequently, the likely impacts generated by a significant improvement in the quality parameters and hence the competitive position of rail transport were assessed, including the potential for shifting part of the demand from the road and air transport to HSR. Overall, however, it can be stated that the potential impacts of the HSR on the growth of passenger transport in the Czech Republic will not be essential. To perceive the regional impacts of HSR construction, analyses of selected indicators (population density per km2, GDP per capita, unemployment rate) by NUTS 3 regions for the period 2007-2017 were also carried out. From the strategic point of view, the research results did not confirm that the planned construction of the HSR primarily stimulates convergence tendencies in regional development as the main priority of EU regional policy. Rather, it seems more likely that the HSR will stimulate the extraction of economic activity from “rural” regions in favour of metropolitan regions.

scholarly journals Study on a Brain-Controlled Pneumatic Actuator to Assist Emergency Braking of a Vehicle

2021 ◽  
Vol 23 (3) ◽  
pp. F49-F57
Author(s):  
Ryszard Dindorf ◽  
Jakub Takosoglu ◽  
Piotr Wos
Keyword(s):  
Czech Republic ◽  
Legal Framework ◽  
Freight Transport ◽  
Current Situation ◽  
Transport Sector ◽  
The Czech Republic ◽  
The Road ◽  
Emergency Braking ◽  
Road Freight

This article deals with the issue of safety within the road freight transport sector with regards to the securing of cargo on a vehicle. The first part of the article focuses on the legal framework that regulates this issue in the Czech Republic. The second part is based on a case study and survey conducted among drivers of the road freight transport vehicles into their awareness of what they understand is meant by securing and secure cargo. The case study was carried out in a specific transport company and includes an analysis of the current situation and concrete measures for improving safety while securing timber for transport.

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