Camera-Based Vibration Measurement of the World War I Memorial Bridge in Portsmouth, New Hampshire
Structural health monitoring (SHM) is a method for determining the structural integrity of civil infrastructure elements as a basis for maintenance and repair protocols. This monitoring depends on collecting structural response data from sensors installed on the structure due to in-service excitatio...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Published: |
American Society of Civil Engineers (ASCE)
2020
|
| Online Access: | https://hdl.handle.net/1721.1/127181 |
| _version_ | 1826206182574915584 |
|---|---|
| author | Chen, Justin Adams, Travis M. Sun, Hao Bell, Erin S. Buyukozturk, Oral |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Chen, Justin Adams, Travis M. Sun, Hao Bell, Erin S. Buyukozturk, Oral |
| author_sort | Chen, Justin |
| collection | MIT |
| description | Structural health monitoring (SHM) is a method for determining the structural integrity of civil infrastructure elements as a basis for maintenance and repair protocols. This monitoring depends on collecting structural response data from sensors installed on the structure due to in-service excitations. The installation additionally requires access to structural elements, power, and communication. New methods for remote measurement of displacements using video cameras could greatly simplify the process of instrumentation, making SHM much more attainable for many structures. This paper presents the remote camera measurement of the motions of the World War I Memorial Bridge in Portsmouth, New Hampshire, a vertical-lift bridge, from a distance of over 80 m. Vibration frequencies and mode shapes of the bridge are identified by measuring the displacements due to the lift span impact. Displacement of the bridge due to in-service traffic is also measured. Measured signals are compared with those from accelerometers and strain gauges installed on the bridge, and identified characteristics of the bridge are compared with a finite-element model for verification. Results show the potential of applying video cameras to measure and visualize vibrations of structures in SHM. |
| first_indexed | 2024-09-23T13:25:24Z |
| format | Article |
| id | mit-1721.1/127181 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:25:24Z |
| publishDate | 2020 |
| publisher | American Society of Civil Engineers (ASCE) |
| record_format | dspace |
| spelling | mit-1721.1/1271812022-10-01T15:11:03Z Camera-Based Vibration Measurement of the World War I Memorial Bridge in Portsmouth, New Hampshire Chen, Justin Adams, Travis M. Sun, Hao Bell, Erin S. Buyukozturk, Oral Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Chen, Justin Structural health monitoring (SHM) is a method for determining the structural integrity of civil infrastructure elements as a basis for maintenance and repair protocols. This monitoring depends on collecting structural response data from sensors installed on the structure due to in-service excitations. The installation additionally requires access to structural elements, power, and communication. New methods for remote measurement of displacements using video cameras could greatly simplify the process of instrumentation, making SHM much more attainable for many structures. This paper presents the remote camera measurement of the motions of the World War I Memorial Bridge in Portsmouth, New Hampshire, a vertical-lift bridge, from a distance of over 80 m. Vibration frequencies and mode shapes of the bridge are identified by measuring the displacements due to the lift span impact. Displacement of the bridge due to in-service traffic is also measured. Measured signals are compared with those from accelerometers and strain gauges installed on the bridge, and identified characteristics of the bridge are compared with a finite-element model for verification. Results show the potential of applying video cameras to measure and visualize vibrations of structures in SHM. 2020-09-04T15:16:39Z 2020-09-04T15:16:39Z 2018-11 Article http://purl.org/eprint/type/JournalArticle 0733-9445 1943-541X https://hdl.handle.net/1721.1/127181 Chen, Justin et al. "Camera-Based Vibration Measurement of the World War I Memorial Bridge in Portsmouth, New Hampshire." Journal of Structural Engineering 144, 11 (November 2018): dx.doi.org/10.10/(asce)st.1943-541x.0002203. http://dx.doi.org/10.1061/(asce)st.1943-541x.0002203 Journal of Structural Engineering Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Society of Civil Engineers (ASCE) Prof. Buyukozturk |
| spellingShingle | Chen, Justin Adams, Travis M. Sun, Hao Bell, Erin S. Buyukozturk, Oral Camera-Based Vibration Measurement of the World War I Memorial Bridge in Portsmouth, New Hampshire |
| title | Camera-Based Vibration Measurement of the World War I Memorial Bridge in Portsmouth, New Hampshire |
| title_full | Camera-Based Vibration Measurement of the World War I Memorial Bridge in Portsmouth, New Hampshire |
| title_fullStr | Camera-Based Vibration Measurement of the World War I Memorial Bridge in Portsmouth, New Hampshire |
| title_full_unstemmed | Camera-Based Vibration Measurement of the World War I Memorial Bridge in Portsmouth, New Hampshire |
| title_short | Camera-Based Vibration Measurement of the World War I Memorial Bridge in Portsmouth, New Hampshire |
| title_sort | camera based vibration measurement of the world war i memorial bridge in portsmouth new hampshire |
| url | https://hdl.handle.net/1721.1/127181 |
| work_keys_str_mv | AT chenjustin camerabasedvibrationmeasurementoftheworldwarimemorialbridgeinportsmouthnewhampshire AT adamstravism camerabasedvibrationmeasurementoftheworldwarimemorialbridgeinportsmouthnewhampshire AT sunhao camerabasedvibrationmeasurementoftheworldwarimemorialbridgeinportsmouthnewhampshire AT bellerins camerabasedvibrationmeasurementoftheworldwarimemorialbridgeinportsmouthnewhampshire AT buyukozturkoral camerabasedvibrationmeasurementoftheworldwarimemorialbridgeinportsmouthnewhampshire |