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作者:

Hu, Menghan (Hu, Menghan.) | Jia, Zhenlei (Jia, Zhenlei.) | Han, Qiang (Han, Qiang.) (学者:韩强) | Xu, Li (Xu, Li.) | Jiao, Chiyu (Jiao, Chiyu.) | Long, Peiheng (Long, Peiheng.)

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Scopus SCIE

摘要:

Connections between precast bridge deck panels (PBDPs) have the risks of cracking and leaking during service life, influencing the performance and durability of PBDPs. High-performance materials offer the possibility for simplifying joint configurations and increasing serviceability performance. Traffic causes the bridge deck panels to bear the action of fatigue load inevitably. Therefore, this paper conducted validation tests and fatigue bending tests to investigate the fatigue behaviors of PBDPs with the proposed high-performance connections. Ultrahigh-performance concrete and carbon fiber-reinforced polymer tendons were adopted in the proposed connection. The validation tests proved the reliability of connections in the longitudinal and transverse directions under Vehicle mode-III in the Chinese code. The fatigue bending tests analyzed the performance parameter development of PBDPs with the proposed connection during the whole fatigue process, including crack pattern, deflection, strain, stiffness, and energy dissipation. Then, empirical models used to predict fatigue deflection and fatigue damage quantity were put forward based on the test results. The results show that the capacity of the static test after fatigue is 2.17 and 13.63 times the upper fatigue limit when the connection is along the support direction and perpendicular to the support direction, respectively. The proposed high-performance connection has enough safe reserves irrespective of which direction it is arranged. The fatigue damage of PBDPs with the proposed connection under moment develops in three stages: rapid development of fatigue damage stage, stable accumulation of damage stage, and imminent failure stage. The maximum midspan deflection and logarithmic cycle numbers present linear relationships. These empirical models have ideal accuracy for predicting flexural fatigue deflection and accumulative damage.

关键词:

High-performance materials Fatigue damage prediction Fatigue experiments Precast bridge deck panels (PBDPs) with high-performance joints Fatigue performance

作者机构:

  • [ 1 ] [Hu, Menghan]Beijing Univ Civil Engn & Architecture, Sch Civil & Transportat Engn, Beijing 100044, Peoples R China
  • [ 2 ] [Long, Peiheng]Beijing Univ Civil Engn & Architecture, Sch Civil & Transportat Engn, Beijing 100044, Peoples R China
  • [ 3 ] [Jia, Zhenlei]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Han, Qiang]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Xu, Li]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 6 ] [Jiao, Chiyu]Beijing Univ Civil Engn & Architecture, Engn Struct & New Mat Res Ctr Beijing Higher Educ, Beijing 100044, Peoples R China
  • [ 7 ] [Jiao, Chiyu]Beijing Univ Civil Engn & Architecture, Multifunct Shaking Tables Lab, Beijing 100044, Peoples R China

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来源 :

JOURNAL OF BRIDGE ENGINEERING

ISSN: 1084-0702

年份: 2023

期: 11

卷: 28

3 . 6 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:19

被引次数:

WoS核心集被引频次:

SCOPUS被引频次: 4

ESI高被引论文在榜: 0 展开所有

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