Geodetic Measurement of Longitudinal Displacements of the Railway Bridge

Geoinformatics FCE CTU ◽

10.14311/gi.12.3 ◽

2014 ◽

Vol 12 ◽

pp. 16-21

Author(s):

Jaroslav Braun ◽

Martin Štroner

Keyword(s):

Geodetic Network ◽

Railway Bridge ◽

Geodetic Measurement ◽

Geodetic Measurements ◽

Concrete Deck

The paper deals with geodetic measurements of mutual longitudinal displacements ofconstruction of the railway bridge and rails on the bridge in Klášterec nad Oh í.Construction of the bridge is made of steel with a concrete deck, which carries the stonesuperstructure and rails. The bridge is about 100 meters long and expected deformationsare in millimetres. The method of geodetic network with the expected standard deviationsof coordinates about 0.2 mm was chosen. The deformation of the structure was determinedto be 4 mm, the deformation of the rails was determined to be 1 mm, both as a result ofepoch comparison.

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NEW METHODS OF ACCOUNTING FOR VERTICAL REFRACTION WITH TRIGONOMETRIC LIVELING IN THE CONDITIONS OF THE REPUBLIC OF UZBEKISTAN

Irrigatsiya va Melioratsiya ◽

10.35938/2018.1.12.14 ◽

2018 ◽

pp. 55-57

Author(s):

A.S. Suyunov ◽

U.A. Berdiculov ◽

Sh.A. Suyunov

Keyword(s):

Refraction Coefficient ◽

Geodetic Measurement ◽

Ordinary Method ◽

New Methods ◽

Geodetic Measurements ◽

The Republic ◽

Vertical Gradients

In the conditions of Uzbekistan, a simple and ordinary method of refraction is used to determine the relative elevations without vertical refraction coefficient or angle. Described that these methods require a two-sided simultaneous or non-simultaneous geodetic measurements. Working formulas for vertical refraction are presented by calculating vertical gradients in geodetic measurement points.

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METHODOLOGICAL BASIS OF CONTROL NETWORK MODERNISATION IN HUGE HYDROTECHNICAL STRUCTURES

Environment Technology Resources Proceedings of the International Scientific and Practical Conference ◽

10.17770/etr2005vol1.2157 ◽

2005 ◽

Vol 1 ◽

pp. 302

Author(s):

Janina Zaczek-Peplinska

Keyword(s):

Network Structure ◽

Geodetic Network ◽

Control Network ◽

Control Measurement ◽

Methodological Basis ◽

Geodetic Measurements ◽

Effective Conservation

Water dams are typical structures which require cyclic and in some cases, permanent control of their conditions. Most of the Polish damming structures are more than fifty years old and funds assigned for their renovation and effective conservation are being continuously reduced. Therefore, it is vital to improve the control of those structures.Cyclic geodetic measurements of movements are obligatory elements of control measurement schedule and are important for evaluation of damming structures security. Complex modernisation of geodetic network for movement examination consists of many actions, which goals are:- Reactivating devastated network structure,- Modernisation of geodetic process of structures movements determination (concerning steps: measurements and data elaborating),- Enhancing the accuracy of geodetic measurements,Increasing a credibility of the movement measurements results.

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ANALYSIS OF DIAPHRAGM BEHAVIOUR IN COMPOSITE MULTI GIRDER RAILWAY BRIDGES

Journal of Civil Engineering and Management ◽

10.3846/13923730.2004.9636298 ◽

2004 ◽

Vol 10 (2) ◽

pp. 143-150

Author(s):

Yannick Sieffert ◽

Gérard Michel ◽

Didier Martin ◽

David Keller ◽

Jean-François Jullien

Keyword(s):

Bridge Deck ◽

Element Model ◽

Longitudinal Distribution ◽

Railway Bridge ◽

Railway Bridges ◽

Traffic Loads ◽

Concrete Bridge Deck ◽

Actual Geometry ◽

Static Failure ◽

Concrete Deck

This study focuses on mechanical behaviour of diaphragm in composite multigirders railway bridge. The aim is to predict and to compare, with a numerical simulation, the transverse and longitudinal distribution of traffic loads in different girders and in the slab for the cases with and without intermediary diaphragm. A 3‐D finite element model is developed to represent the actual geometry of multigirder bridge. Durability of the concrete bridge deck is directly related to cracking, so a non‐linear constitutive equation is used for the concrete deck. This study focuses on the response of a bridge with and without dipahragm under a UIC and TGV loading. To achieve this aim, a static failure analysis is performed. Our analysis concluded that diaphragm is not necessary, so it seems to be possible to remove the diaphragms.

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347823 ESTIMATION OF STRUCTURE-BORNE NOISE REDUCTION EFFECT OF STEEL RAILWAY BRIDGE EQUIPPED WITH FLOATING LADDER TRACK AND FLOATING REINFORCED-CONCRETE DECK(Environment & Energy,Technical Session)

The Proceedings of International Symposium on Seed-up and Service Technology for Railway and Maglev Systems STECH ◽

10.1299/jsmestech.2009._347823-1_ ◽

2009 ◽

Vol 2009 (0) ◽

pp. _347823-1_-_347823-6_

Author(s):

Tsutomu Watanabe ◽

Masamichi Sogabe ◽

Kiyoshi Asanuma ◽

Hajime Wakui

Keyword(s):

Reinforced Concrete ◽

Noise Reduction ◽

Technical Session ◽

Railway Bridge ◽

Reduction Effect ◽

Steel Railway Bridge ◽

Concrete Deck

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Estimation of strain accumulation of densification network in Northern Marmara Region, Turkey

Natural Hazards and Earth System Science ◽

10.5194/nhess-10-2135-2010 ◽

2010 ◽

Vol 10 (10) ◽

pp. 2135-2143 ◽

Cited By ~ 9

Author(s):

I. Deniz ◽

H. Ozener

Keyword(s):

Global Positioning System ◽

Strain Analysis ◽

Geodetic Network ◽

Element Model ◽

Marmara Region ◽

Strain Accumulation ◽

Global Test ◽

Geodetic Measurements ◽

Station Coordinates ◽

Global Positioning

Abstract. Strain analysis is one of the methods for the kinematic analysis of the repeated geodetic measurements. In order to derive strain accumulation in Marmara Region, different institutions carried out several Global Positioning System (GPS) campaigns in 1999 and 2006. The GPS campaigns were performed on the geodetic network which cover the provinces: Kirklareli, Tekirdag, Bursa, Bilecik and Adapazari. Then, the displacements of the network stations were estimated by means of analysing the GPS space geodetic measurements. For the assessment of the datum differences between 1999 and 2006 on the station coordinates, 3-D Helmert transformation was applied to the coordinates of each 1999 and 2006 datum. Then, a global test was introduced to determine the significant deformation which occurred in the geodetic GPS network. Strain accumulation with a finite element model was then computed. First, triangles were constructed for the whole network with the Delaunay method. Hereafter, strain parameters were calculated for each triangle. Maximum values of strain accumulation were found around the surroundings of Marmara Ereglisi and Izmit, whereas minimum values are around Istanbul.

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