Pedestrian Bridge Monitoring

[vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”grid” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” z_index=””][vc_column][vc_separator type=”transparent” thickness=”50″ up=”0″ down=”0″][vc_column_text]← Case Studies [/vc_column_text][vc_separator type=”transparent” thickness=”32″ up=”0″ down=”0″][/vc_column][/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”grid” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” el_class=”case-study-content” z_index=””][vc_column width=”1/2″][vc_single_image image=”347″ img_size=”570×420″ qode_css_animation=””][vc_separator type=”transparent” thickness=”32″ up=”0″ down=”0″][vc_column_text el_class=”case-studies-copy”]SCOPE: Deliver a unique hardware and software monitoring solution for the transition of land from old Railroad grounds to a jogging, walking, inline skating, and bicycling path.[/vc_column_text][vc_separator type=”transparent” thickness=”32″ up=”0″ down=”0″][vc_column_text]

SERVICES DELIVERED:

[/vc_column_text][vc_column_text]Specto Technology supplied state-of-the-art monitoring products including crackmeters, tiltmeters, wireless dataloggers and ARGUS software for implementation in the field.[/vc_column_text][vc_separator type=”transparent” thickness=”32″ up=”0″ down=”0″][vc_column_text]

PROJECT OVERVIEW:

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• The Katy Trail is a jogging, walking, inline skating, and bicycling path that runs through the Uptown and Oak Lawn areas of Dallas, Texas, following the path of the old Missouri-Kansas-Texas Railroad, which was known as MKT or the Katy.
• The construction work to convert the unused 3.5 miles railway track into a hiking trail took place between 2000 and 2007.
• Since completion, it has been expanded several times and is currently on final extension phase (Phase VI).
• The Phase VI is 0.65 miles long, includes 2 pedestrian bridges and the estimated cost is $14.1 million.
• Phase VI construction started in October 2015 and was completed in January 2018.

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UNIQUE CHALLENGES:

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• Unique engineering designs and monitoring for the project is required due to the fact that one of the bridge (over Mockingbird Lane) sits atop a Dallas Area Rapid Transit (DART) tunnel.
• A cantilevered suspension bridge design had to be utilized to push the bridge foundation away from the tunnel.

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INSTRUMENTATION & MONITORING SCHEME:

[/vc_column_text][vc_column_text]The instrumentation and monitoring scheme, designed and carried out by HNTB and Rebcon Inc., respectively,  consists of the following instruments, dataloggers and software:

VW Crackmeters

• 20 x crackmeters are installed inside the DART tunnel
• These monitor cracks in the tunnel lining

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MEMS Tiltmeters

• 11 x tiltmeters are installed on retaining structures
• They monitor the rotation of the retaining structure

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LS-G6 Wireless Data Acquisition System

• The LS-G6 system, by Loadsensing, was selected due to its long range radio, low power consumption, easy implementation and because it’s capable of working inside the tunnel
• The system consists of one gateway, 11 x nodes for the MEMS tiltmeters and 5 x nodes for the VW crackmeters
• The system collects readings automatically and wirelessly from the crackmeters and the tiltmeters

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Deformation Monitoring Points

• 92 x prisms were installed in and outside the DART tunnel
• These are monitored by manual, optical survey

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ARGUS Software

• ARGUS was selected for its ability to simply display data online in real time
• The software is used for web based management and reporting of data from all automated instruments and from manual optical survey points

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Specto Technology – Bringing You A World of Solutions

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How we work with you to make your life easier…

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Specto Technology provides unique, powerful hardware & software for wireless Geotechnical, Structural & Environmental monitoring. This is how we work with you to make your life easier.

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