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Research on anti-sliding performance of pin-connected cable clamps of suspension bridges considering influence of suspender forces(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2025年6期
Page:
135-142
Research Field:
桥梁智能运维与防灾减灾
Publishing date:

Info

Title:
Research on anti-sliding performance of pin-connected cable clamps of suspension bridges considering influence of suspender forces
Author(s):
SUN Hong-bin1; 2;  FENG Li-bo3;  SHI Cheng-hong4;  ZHANG Peng-fei5;  XU Xiang4; ZHANG Wei5;  DI Hao3;  CHEN Peng5
(1. School of Civil and Transportation, Hohai University, Nanjing 210098, Jiangsu, China; 2. Jiangsu Yangtze River Highway Passage Management Co., Ltd., Nanjing 210046, Jiangsu, China; 3. China Railway Design Co., Ltd., Tianjin 300308, China; 4. School of Transportation, Southeast University,Nanjing 210096, Jiangsu, China; 5. CCCC Highway Consultants Co., Ltd., Beijing 100010, China)
Keywords:
bridge engineering;  suspension bridge;  pin-connected cable clamp;  anti-sliding performance;  suspender force;  bolt preload
PACS:
U411
DOI:
-
Abstract:
To systematically investigate the variation patterns of the anti-sliding performance of pin-connected cable clamps for suspension bridges, this study employed theoretical derivation and numerical simulation methods to examine the influence of the factors such as suspender forces on the anti-sliding behavior of cable clamps. First, based on the Coulomb friction law, the calculation formula of the anti-sliding force of pin-connected cable clamps considering only bolt preloads was derived. On this basis, the calculation formula of the anti-sliding force of pin-connected cable clamps considering the influence of suspender forces was further derived. Subsequently, taking the SJ1 cable clamp near the pylon of a suspension bridge as the research object, a localized refined finite element model of the cable clamp was established. In this model, the main cable was equivalently simulated as a transversely isotropic material, with one end fixed and the other free. The contact between the cable, cable clamp, and bolts was defined as surface-to-surface hard contact. Referring to the construction steps of the cable clamp, the finite element model calculation was divided into four loading steps. The anti-sliding forces of the upper and lower halves of the cable clamp under the influence of suspender forces were simulated, and the simulation results were compared and analyzed with the theoretical derivation results. The research results indicated that the relative error between the theoretical calculation and numerical simulation of the cable clamp anti-sliding force was approximately 2.0%, verifying the reliability of the theoretically derived formulas. Based on the numerical simulation and theoretical derivation results, it is found that as the suspender force increases, the anti-sliding force of the upper half of the cable clamp gradually increases, while that of the lower half gradually decreases, leading to a gradual reduction in the total anti-sliding force of the cable clamp. Theoretical derivation further reveals that the anti-sliding capacity of the cable clamp is positively linearly correlated with the bolt preload and negatively correlated with the coefficient of circumferential friction. This study derives theoretical calculation formulas of the anti-sliding force of pin-connected cable clamps for suspension bridges under the influence of suspender forces, verifies the reliability of the theoretical derivation through numerical simulation, and systematically reveals the variation patterns of the anti-sliding performance of pin-connected cable clamps with the factors such as suspender forces.7 figs, 16 refs.

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Last Update: 2025-12-20