Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22475
Title: Damage detection of long-span bridges using stress influence lines incorporated control charts
Authors: Chen, ZW
Cai, QL
Lei, Y
Zhu, SY 
Keywords: Control chart
Damage detection
Long-span bridges
Stress influence line
Structural health monitoring
Issue Date: 2014
Publisher: SP Science in China Press
Source: Science China. Technological sciences, 2014, v. 57, no. 9, p. 1689-1697 How to cite?
Journal: Science China. Technological sciences 
Abstract: Numerous long-span bridges have been built throughout the world in recent years. These bridges are progressively damaged by continuous usage throughout their long service life. The failure of local structural components is detrimental to the performance of the entire bridge, furthermore, detecting the local abnormality at an early stage is difficult. This paper explores a novel damage detection method for long-span bridges by incorporating stress influence lines (SILs) in control charts, and validates the efficacy of the method through a case study of the Tsing Ma Suspension Bridge. Damage indices based on SILs are subsequently proposed and applied to hypothetical damage scenarios in which one or two critical bridge components are subjected to severe damage. The comparison study suggests that the first-order difference of SIL change is an accurate indicator for location of the damage. To some extent, different levels of damage can be quantified by using SILs incorporating with X-bar control chart. Results of this study indicate that the proposed SIL-based method offers a promising technique for damage detection in long-span bridges.
URI: http://hdl.handle.net/10397/22475
ISSN: 1674-7321
EISSN: 1869-1900
DOI: 10.1007/s11431-014-5623-0
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