Field Load Test Based SHM System Safety Standard Determination for Rigid Frame Bridge
Xilong Zheng*, Qiong Wang, Di Guan
School of Civil and Architectural Engineering, Harbin University, Harbin, 150076, China
*
Corresponding Author: Xilong Zheng. Email: sampson88@126.com
Structural Durability & Health Monitoring https://doi.org/10.32604/sdhm.2024.048473
Received 08 December 2023; Accepted 07 March 2024; Published online 08 April 2024
Abstract
The deteriorated continuous rigid frame bridge is strengthened by external prestressing. Static loading tests were
conducted before and after the bridge rehabilitation to verify the effectiveness of the rehabilitation process. The
stiffness of the repaired bridge is improved, and the maximum deflection of the load test is reduced from 37.9 to
27.6 mm. A bridge health monitoring system is installed after the bridge is reinforced. To achieve an easy assessment of the bridge’s safety status by directly using transferred data, a real-time safety warning system is created
based on a five-level safety standard. The threshold for each safety level will be determined by theoretical calculations and the outcomes of static loading tests. The highest risk threshold will be set at the ultimate limit state
value. The remaining levels, namely middle risk, low risk, and very low risk, will be determined using
reduction coefficients of 0.95, 0.9, and 0.8, respectively.
Keywords
Continuous rigid frame bridge; rehabilitation; long-term monitoring; field load test; safety standard determination
Open Access
Login
Register
Submit a Paper
Propose a Special lssue
Download PDF
Downloads
Citation Tools
