Using Terrestrial Laser Scanning for Dynamic Bridge Deflection Measurement

Files in This Item:
File Description SizeFormat 
2014Istanbul.pdf777.46 kBAdobe PDFDownload
Title: Using Terrestrial Laser Scanning for Dynamic Bridge Deflection Measurement
Authors: Truong-Hong, Linh
Laefer, Debra F.
Permanent link: http://hdl.handle.net/10197/7495
Date: 13-Aug-2014
Abstract: Heavy vehicular traffic and aggressive environmental conditions can cause unexpected bridge deterioration, thus requiring periodic inspections to identify and assess possible defects. One indicator is the amount of vertical deflection that occurs during loading. Monitoring vertical bridge deflection through traditional surveying typically requires multiple instruments and extensive time in the field, along with their affiliated costs. A terrestrial laser scanner (TLS) can generate a million data points per second with millimeter level accuracy, thus offering the possibility of changing how vertical deflections of bridge girders are checked. This paper presents a preliminary investigation into using TLS to collecting vertical bridge displacements during dynamic loading. In this work, a point-surface based method is proposed to calculate the difference in elevation of a bridge girder at unloaded and loaded conditions. The technique is applied to the Loughbrickland Bridge in Northern Ireland.
Funding Details: European Research Council
Type of material: Conference Publication
Keywords: Terrestrial laser scanning;Point cloud;Bridge inspection;Dynamic deflection
Language: en
Status of Item: Peer reviewed
Conference Details: IABSE Istanbul Bridge Conference, Istanbul, Turkey, 11 - 13 August 2014
Appears in Collections:Earth Institute Research Collection
Civil Engineering Research Collection

Show full item record

Download(s) 50

188
checked on May 25, 2018

Google ScholarTM

Check


This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.