![]() ¢ The recording process, including scanner measurements Survey and is divided into the following parts: This appendix describes the methods and results of the Therefore, the surface of theĬoncrete lining underneath is inaccessible. The tunnel interior is faced with ceramic tiles, which is Roadway (two-lane) width of 7.3 m plus a sidewalk on one The portal-to-portal length of the tunnel is 1,661 m, with a Since it opened, the tunnel has been exposed to extreme envi. Structed under the ship channels of Chesapeake Bay in anĪpproximately eastâwest direction and was opened in 1964. Tunnel is one of two immersed, sunken-tube tunnels con. ![]() Side of the bay) and the Chesapeake Tunnel. Theīridge-tunnel system combines bridgesâconnecting fourĪrtificial islandsâwith the Timble Shoal Tunnel (the western The Chesapeake Bay Bridge-Tunnel is a 37-km-long linkĬrossing the mouth of the Chesapeake Bay and connecting theĭelmarva Peninsulaâs Eastern Shore of Virginia with Virginiaīeach and the metropolitan area of Hampton Roads. ![]() The survey was conducted according to the sub-Ĭontract agreement with the Federal Institute for Materials Peake Bay Bridge-Tunnel system in Virginiaâwas performed Tunnel degradation over time with multiple measurementsĪnd a recording interval of at least 1 year.Ī survey of the Chesapeake Tunnelâa part of the Chesa. In manyĬases, long-term monitoring supports the observation of the Tions, and performing a 3-D zoom of image details). Image manipulation is also possible (e.g., adjusting theĬontrast and brightness of the display, creating 3-D presenta. This technique helps the operator analyzeĪnd identify suspicious anomalies and compare them on all The tunnel on the screen, with a pixel-by-pixel synchronism Ware package displaying all three channels (visual, thermal,Īnd 3-D) simultaneously. The data are visualized with an easy-to-use, powerful soft. Space for the scanner head and the operator console, such Installed in almost every road vehicle that offers enough It can obtain a fastĪnd nondestructive measurement with only a short period Rotating mirror speed of up to 300 Hz is one of the crucialįeatures affecting the measuring speed. ![]() Of identifying cracks as small as 0.3 mm in width. Simultaneously with a resolution of 10,000 pixels and a Surface, thermographic, and three-dimensional (3-D) images The SPACETEC TS3 scanner is able to record high-precision The surface, changes in material composition, and water With this tool, it is possible to validate the effects ofĭegradationâsuch as crack developments, cavities beneath Monitor disruptions and conditions of tunnel linings (Fig. Since 1982, SPACETEC has offered a scanner system to Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages. Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. ![]()
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