Damage Detection for Simply Supported Bridge with Bending Fuzzy Stiffness Consideration

doi:10.1007/s12204-018-1939-4

sa ›› 2018, Vol. 23 ›› Issue (2): 308-319.doi: 10.1007/s12204-018-1939-4

Damage Detection for Simply Supported Bridge with Bending Fuzzy Stiffness Consideration

ZHOU Yu (周宇), DI Shengkui (狄生奎), XIANG Changsheng (项长生), WANG Lixian (王立宪)

(a. School of Civil Engineering; b. Northwest Center for Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China)

出版日期:2018-04-01 发布日期:2018-06-19
通讯作者: ZHOU Yu (周宇) E-mail:yuzhou923@outlook.com

Damage Detection for Simply Supported Bridge with Bending Fuzzy Stiffness Consideration

ZHOU Yu (周宇), DI Shengkui (狄生奎), XIANG Changsheng (项长生), WANG Lixian (王立宪)

(a. School of Civil Engineering; b. Northwest Center for Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China)

Online:2018-04-01 Published:2018-06-19
Contact: ZHOU Yu (周宇) E-mail:yuzhou923@outlook.com

摘要/Abstract

摘要： The benchmark of a simply supported beam with damage and bending fuzzy stiffness consideration is established to be utilized for damage detection. The explicit expression describing the Rotational Angle Influence Lines (RAIL) of the arbitrary section in the benchmark is presented as the nonlinear relation between the moving load and the RAIL appeared, when the moving load is located on the damage area. The damage detection method is derived based on the Difference of the RAIL Curvature (DRAIL-C) prior to and following arbitrarily section damage in a simply supported beam with bending fuzzy stiffness consideration. The results demonstrate that the damage position can be located by the DRAIL-C graph and the damage extent can be calculated by the DRAIL-C curve peak. The simply supported box girder as a one-dimensional model and the simply supported truss bridge as a three-dimensional model with the bending fuzzy stiffness are simulated for the validity of the proposed method to be verified. The measuring point position and noise intensity effects are discussed in the simply supported box girder example. This paper provides a new consideration and technique for the damage detection of a simply supported bridge with bending fuzzy stiffness consideration.

关键词: rotational angle, influence lines method, simply supported bridge, bending fuzzy stiffness, damage detection

Abstract: The benchmark of a simply supported beam with damage and bending fuzzy stiffness consideration is established to be utilized for damage detection. The explicit expression describing the Rotational Angle Influence Lines (RAIL) of the arbitrary section in the benchmark is presented as the nonlinear relation between the moving load and the RAIL appeared, when the moving load is located on the damage area. The damage detection method is derived based on the Difference of the RAIL Curvature (DRAIL-C) prior to and following arbitrarily section damage in a simply supported beam with bending fuzzy stiffness consideration. The results demonstrate that the damage position can be located by the DRAIL-C graph and the damage extent can be calculated by the DRAIL-C curve peak. The simply supported box girder as a one-dimensional model and the simply supported truss bridge as a three-dimensional model with the bending fuzzy stiffness are simulated for the validity of the proposed method to be verified. The measuring point position and noise intensity effects are discussed in the simply supported box girder example. This paper provides a new consideration and technique for the damage detection of a simply supported bridge with bending fuzzy stiffness consideration.

Key words: rotational angle, influence lines method, simply supported bridge, bending fuzzy stiffness, damage detection

中图分类号:

U 446

ZHOU Yu (周宇), DI Shengkui (狄生奎), XIANG Changsheng (项长生), WANG Lixian (王立宪). Damage Detection for Simply Supported Bridge with Bending Fuzzy Stiffness Consideration[J]. sa, 2018, 23(2): 308-319.

ZHOU Yu (周宇), DI Shengkui (狄生奎), XIANG Changsheng (项长生), WANG Lixian (王立宪). Damage Detection for Simply Supported Bridge with Bending Fuzzy Stiffness Consideration[J]. Journal of Shanghai Jiao Tong University (Science), 2018, 23(2): 308-319.

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Damage Detection for Simply Supported Bridge with Bending Fuzzy Stiffness Consideration

Damage Detection for Simply Supported Bridge with Bending Fuzzy Stiffness Consideration

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