Article
Construction & Building Technology
Longguan Zhang, Zhenzhen Liang, Shengli Li
Summary: This study investigated the influence of pre-stress level and protection current density on the cathodic protection efficiency and mechanical properties of stay cable high-strength steel wires. Results showed that the corrosion rate of steel wires increased with pre-stress level and the application of ICCP reduced rust accumulation on their surface. The ICCP efficiency increased with the protection current density, with no significant difference in the IOP values of the steel wires with different pre-stress levels.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Civil
Serdar Selamet, Abdullah Yusuf Ozer, Kerem Bulut Ildan
Summary: This paper investigates the fire performance of suspender cables used in long-span suspension bridges. The experimental results show that the unprotected cables failed within 3-8 minutes in the fire tests but still sustained the load at 400 degrees Celsius. Therefore, it is necessary to apply fire protection on the cables to keep their temperature below 400 degrees Celsius.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Yangguang Yuan, Xiaodong Liu, Guangning Pu, Tao Wang, Dezhi Zheng
Summary: The study reveals that the corrosion process of high-strength steel wires exhibits specific patterns in different stages, which can be quantitatively described. The microtopography of the wire surface undergoes significant changes during the corrosion process. The spatial corrosion variability of cable wires within a stay cable is significantly influenced by the shape of the broken sheath.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Keyu Lai, Wei Fan, Zhengqing Chen, Chao Yang, Zhiwen Liu, Shouying Li
Summary: This paper investigates the novel application of wire ropes as a damper to reduce wind-induced high-mode vibration of stay cables. Cyclic loading tests are conducted to analyze the damping behavior of the wire rope damper. A modified Bouc-Wen model is used to describe the hysteretic characteristics of the damper. An analysis method considering nonlinear damping behavior is developed and validated with physical experiments. The wire rope damper is successfully applied to reduce cable vibrations on the Su-Tong Yangtze River Bridge.
ENGINEERING STRUCTURES
(2023)
Article
Thermodynamics
Yaoyao Pei, Zhenyuan Luo, Henglin Xiao, Zhi Chen, Xinlong Zhou, Zhiyong Yang
Summary: This paper proposes a simple design method using carbon fiber heating wires to prevent the icing of stay cables. Experimental tests and numerical simulations are conducted to obtain the temperature rise rule and related parameters under specific conditions.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Engineering, Civil
Jing Gao, Xintao Zhang, Huakun Wang, Longyun Chen
Summary: This study aims to investigate the random corrosion characteristics and residual strength of high strength steel wire after 18 years of service. Salt-spray accelerated corrosion test was conducted on the aged specimen to determine the mass loss characteristic and quantify the corrosion characteristics by statistical analysis. The ultimate breaking strength of the corroded steel wire was determined by a tensile test, and a numerical reconstruction method of random corroded wire was proposed for residual strength assessment.
Article
Construction & Building Technology
Shengli Li, Zhenzhen Liang, Longguan Zhang
Summary: The AE technique was used to evaluate the corrosion degree of stay cable high-strength steel wires under pre-stress and impressed current cathodic protection in a simulated marine atmospheric rainwater environment. The study found that the more negative the open circuit potentials and the greater the average corrosion rates, the higher the cumulative AE parameters. The corrosion degree was classified into no corrosion, slight corrosion, medium corrosion, and severe corrosion based on AE intensity analysis.
STRUCTURAL CONTROL & HEALTH MONITORING
(2022)
Article
Materials Science, Multidisciplinary
Zeling Zhang, Linfeng Wang, Shenyou Song, Liang Tang, Hailiang Zhang, Hao Zhou, Feng Fang
Summary: Hot galvanization can protect steel from corrosive environments and reduce stress corrosion cracking, but the excessively negative potential of the coating may worsen hydrogen embrittlement. The effect of the coating on the stress corrosion performance of bridge cable wire was studied using various methods. The results showed that zinc-aluminum and zinc-aluminum-magnesium alloy coatings significantly prolonged the stress corrosion fracture time of the steel wire substrates.
Article
Materials Science, Multidisciplinary
Hongtao Li, Zhubing Zhou, Sen Liu, Leyong Wei, Jun Zhao, Han Su
Summary: To estimate the fatigue life of 2200 MPa high-strength steel wire for main cables at the cable saddle outlet, a fatigue loading test was conducted on a single steel wire. The friction coefficient and scale factor were determined for finite element simulation and fatigue life analysis. The fatigue life of the steel wire was analyzed using a two-stage modeling approach. The results indicated that an effective simulation of the steel wire's fatigue life can be achieved with a friction coefficient of 0.21 and a scale factor of 1.15. The fatigue life of the 2200 MPa main cable wire at the saddle outlet was determined to be 4.78 million loading cycles. These findings lay a foundation for the practical engineering application of high-strength steel wire for 2200 MPa main cables.
Article
Engineering, Geological
Naj Aziz, Ali Mirzaghorbanali, Sina Anzanpour, Ashkan Rastegarmanesh, Saman Khaleghparat, Jan Nemcik, Joung Oh, Guangyao Si
Summary: This paper focuses on the experimental study of shear testing of 15.2 mm, 25 t capacity seven wire cables at different angles. The study evaluates the effect of testing angles on the nature of cable failure, cable pretension, and the credibility of the effectiveness of the anchorage system. The results show that increased shear angle leads to increased stiffness of the cable during shear testing.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Engineering, Civil
Chloe Jeanneret, Benjamin Nicoletta, Lucie Robertson, John Gales, Panagiotis Kotsovinos
Summary: This study investigates the impact of fire on prestressed bridge structures, highlighting the possibility that current guidelines may not be conservative enough for long-duration fires, suggesting a reduction of the critical temperature by at least 100°C.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Azam Nabizadeh, Mohammad O. Al-Barqawi, Habib Tabatabai
Summary: The dominant form of main tension elements used in stay cables are seven-wire steel prestressing strands. This study developed probabilistic models for fatigue resistance of seven-wire strands that are not embedded in concrete, finding that classic stress-relieved strands have higher fatigue resistance compared to modern low-relaxation strands. Both classic and modern strands are unlikely to pass the latest fatigue qualification tests for stay cables, with only cable-quality strands having a less than 2.5% probability of failure.
JOURNAL OF BRIDGE ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Sourabh Rajoriya, Shambhu Sharan Mishra
Summary: This paper analyzes the influence of three different shape memory alloy (SMA) wires (i.e., Ni-Ti, Cu-Al-Ni, and Cu-Zn wires) for mitigating model cable vibration. The investigation explores through experimental works, the capabilities of the three SMA wires by estimating the vibration amplitude suppression of the model stay cable. It is found that the Ni-Ti SMA wire has a better performance in vibration suppression as compared to Cu-Al-Ni and Cu-Zn wires, and the attachment of the SMA wire at the mid-length of the cable gives better vibration suppression for the first mode.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Engineering, Manufacturing
Kun Zhang, Jun Xiong, Yang Ke
Summary: The DE-GTA-AM method has successfully regulated the microstructure and tensile properties of austenitic stainless steel by adjusting the feed speed of the latter wire, resulting in the fabrication of thin-walled components.
MATERIALS AND MANUFACTURING PROCESSES
(2021)
Article
Engineering, Civil
Songling Xue, Yidan Sun, Teng Su, Xiaoqing Zhao
Summary: This paper proposes an unsupervised deep learning damage identification technique called DRACNN for analyzing the damage state of parallel steel wire cables in bridge engineering. The DRACNN method utilizes multi-dimensional cross-correlation function as input to train the network structure and obtain optimal parameters, and identifies damage state through layer decomposition and exponentially weighted moving average control chart.
Article
Construction & Building Technology
Shengli Li, Longguan Zhang, Pan Guo, Pu Zhang, Chao Wang, Wencong Sun, Shanling Han
Summary: Ultra high performance concrete (UHPC) demonstrates superior mechanical properties and durability compared to normal concrete (NC) materials. The use of acoustic emission (AE) technique in monitoring crack propagation in UHPC-NC composite beams has shown promising results, with AE parameters exhibiting distinguishable characteristics at different failure stages. AE monitoring method can be considered as an alternative to traditional monitoring methods for real-time monitoring of crack propagation in UHPC-NC composite beams.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Longguan Zhang, Zhenzhen Liang, Shengli Li
Summary: This study investigated the influence of pre-stress level and protection current density on the cathodic protection efficiency and mechanical properties of stay cable high-strength steel wires. Results showed that the corrosion rate of steel wires increased with pre-stress level and the application of ICCP reduced rust accumulation on their surface. The ICCP efficiency increased with the protection current density, with no significant difference in the IOP values of the steel wires with different pre-stress levels.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Shengli Li, Zhenzhen Liang, Longguan Zhang
Summary: The AE technique was used to evaluate the corrosion degree of stay cable high-strength steel wires under pre-stress and impressed current cathodic protection in a simulated marine atmospheric rainwater environment. The study found that the more negative the open circuit potentials and the greater the average corrosion rates, the higher the cumulative AE parameters. The corrosion degree was classified into no corrosion, slight corrosion, medium corrosion, and severe corrosion based on AE intensity analysis.
STRUCTURAL CONTROL & HEALTH MONITORING
(2022)
