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TCP-TUNNEL
Setting Out and Surveying for Tunnels
Introduction This application, installed in a Pocket PC, provides users with the most common options for setting out tunnels and gathering data from them with either motorized or conventional total stations.
Each project is defined through the tunnel’s ground plan and front plan alignments, superelevations and tunnel templates. Three kinds of tunnel templates are supported: simple tunnel templates (an arch with a specific radius), compound tunnel templates (an arch with straight sidewalls) and complex tunnel templates (a succession of straight and curved sections). The tunnel template can be defined graphically by designating a polyline in AutoCAD. Independently of the kind selected, the vertical distance from the keystone to the front plan alignment, the horizontal distance from the ground plan alignment to the center of the tunnel template and the horizontal distance from the front plan alignment to the ground plan alignment will have to be entered. The thickness of the roadbed may optionally be entered.
TCP-TUNNEL - Setting Out and Surveying for Tunnels - Š Aplitop
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The program has complete control over the total station –including the compensator–, the laser pointer, measurements with or without prism and battery status, which are constantly monitored. As a prior step to surveying and setting out, the station should be oriented by one of the methods available: angular, coordinate or inverse intersection positioning.
Surveying Surveying measurements in the tunnel are stored as points files in the mobile device’s memory. They can subsequently be sent to a PC and processed by any program as a conventional points file. Two options are offered to obtain profiles at the theoretical stations indicated, namely Manual Cross-Section and Automatic Cross-Section. The X, Y and Z coordinates, the station measured and the difference compared to the tunnel template (Epsilon) are shown for each point read. Both the theoretical and measured cross-sections can be viewed graphically by means of the Cross-Section Drawing option.
The program allows any point desired to be measured through the Point Measurements option by previously orienting the device. It is also possible to read control points having a specific code in order to subsequently check them. TCP-TUNNEL - Setting Out and Surveying for Tunnels - © Aplitop
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The Quick Check option allows any point of the tunnel cross-section to be observed by manually positioning the station. An analysis of the point compared to the reference system is obtained and information about the deviation from the theoretical point is provided. The control points measured by means of the different surveying options can be checked through the Tunnel Check option by orienting the station automatically, and any difference detected is shown.
Setting Out Setting Out the Front. The total station reads a point situated at the tunnel’s excavation front, indicating the side and level desired. It analyzes the coordinates to subtract the station and searches the level’s projection at the front through an iterative process until the 3D distance between the theoretical and measured points is less than the tolerance defined and provides information on the result obtained.
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Setting Out Cross-Sections. Indicating an interval of stations and an interval increment allows one to set out points of the tunnel’s cross-section in each profile depending on the kind of increment indicated.
Setting Out Road Surface. The program requests the station, the side and the distance from the tunnel cross-section’s center. It then situates the exact kilometer point through an iterative process and provides information on the elevation difference compared to the theoretical point. When defining a theoretical point of the tunnel cross-section, one of the following methods should be selected: •
Level, defined as the elevation difference with regard to the keystone.
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Angle, taking the keystone as 0, the cross section’s right-hand side as between 0 and 200 and its left-hand side as between 0 and –200.
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Length of the arch starting from the keystone.
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Utilities Among others, the application is equipped with the following additional tools: Points on Alignment. By entering a station and a level, the X,Y, and Z coordinates in addition to the radius and azimuth at that point are indicated on screen. Points Analysis. By entering some coordinates, the program provides information about the station and the level corresponding to this point. A point can also be read with the total station to obtain the same result.
Distance between Points. By entering 2 points, the program shows the distance, the azimuth and the elevation difference existing between the points. Area among Points. Starting off from a sequence of points, the surface and perimeter they delimit is shown, as is a diagram of the latter.
File Management The application works with TCP-compatible ASCII files –Digital Terrain Model– although it also includes a PC program that facilitates the conversion of files into the most common files TCP-TUNNEL - Setting Out and Surveying for Tunnels - © Aplitop
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available in the market. All the data transferred between the PC and the mobile device is transmitted in a very simple way using Microsoft ActiveSync. Each project may contain base files, points, ground and front plan alignments and superelevations, thereby allowing users to edit and add new information, in addition to drawing it on screen.
System Requirements Supported Devices Pocket PC with Windows Mobile 5.x / 6.x or Pocket PC 2003 / 2003SE Handheld PC with Windows CE .NET 4.x / 5.x Supported Total Stations Sokkia 3130R3 / SRX Topcon GTS-700 / GPT–7000 / GPT–8000 / GPT-9000 / GPT-7500 Trimble 5600DR
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TCP-TUNNEL CAD Tunnel data processing This software, working under AutoCAD, allows to process data gathered from total stations running TcpTunnel or other programs. Every project is compound of an horizontal and vertical alignment, superelevation, templates and point files, supporting different formats.
Template Definition. Templates can be defined by parameters or selecting a polyline in AutoCAD. The distances from the center of template to alignment, roadbed thickness and superelevation criteria must be given. It is possible to apply different templates to intervals of alignment and interpolate their dimensions.
Cross section calculation and editing. The measured cross-sections can be computed from points, giving the Station interval, minimum number of points, tolerances, etc. Also with the editor are included tools for removing, adding or moving points before drawing.
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Cross-section drawing. It is possible to draw cross-sections in AutoCAD, in individual mode or by sheets. There are options to label differences between project and measured crosssections as well as station, heights, areas, etc.
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Tunnel Drawing. It is possible to create a 3D view of measured cross-sections as a wireline drawing. There are options to draw measured and project cross-sections, the alignment in 3D, longitudinal lines, etc.
Volume Calculation. The program computes volumes of infra and over-excavation by comparing project and measured cross-sections. Reports can be generated and sent to printer, ASCII or HTML files and exported to Word or Excel.
System Requirements •
CAD: AutoCAD 14, 2000, 2000i, 2002, 2004, 2005, 2006, 2007, 2008, 2009
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Operating System: Windows 98SE / NT 4.0 / Me / 2000 / XP / Vista about 32 , 64 bits Aplitop S.L. Sumatra,9 – Urb. El Atabal E-29190 Malaga - Spain Tel. No.: +34 95 2439771 Fax: +34 95 2431371 e-mail: info@aplitop.com Website: www.aplitop.com
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