Behavior and Construction of Stay Cables in Shiyan Stadium

2014 ◽  
Vol 577 ◽  
pp. 1093-1096
Author(s):  
Li Ming Zhu ◽  
Zheng Hao Zhu ◽  
Chao Jie Kang
Keyword(s):  
Tensile Force ◽  
Spatial Structures ◽  
Construction Process ◽  
Analysis Method ◽  
Stay Cable ◽  
Key Technology ◽  
Large Span ◽  
Stay Cables ◽  
Construction Scheme ◽  
Practical Project

The construction of stay cable is the key technology problem in large span spatial structures. This paper carried out a study on the construction scheme of stay cables based on the practical project of Shiyan stadium roof. The loss of tensile force caused by the seven steel wring with different construction order is summarized according to the experimental construction, and the tensile force slacken analysis method was used to calculate the stress of construction. Moreover, the loss of tensile force caused by anchor and relaxation is considered too. Then, the control tensile force of construction, which is used to realize the tensile construction one time, is obtained. Results of the engineering test show that the construction process is simplified and he construction scheme is economic under the condition of allowed precision. The method can provide reference for similar projects.

Design and Analysis of a Suspended Lattice Shell

2012 ◽  
Vol 238 ◽  
pp. 599-602
Author(s):  
Wen Feng Du ◽  
Fu Dong Yu ◽  
Zhi Yong Zhou ◽  
Li Ming Zhu
Keyword(s):  
Tensile Force ◽  
Zhejiang Province ◽  
Construction Process ◽  
Analysis Method ◽  
Key Technology ◽  
Large Span ◽  
Construction Scheme ◽  
Lattice Shell

The design and analysis of the suspended lattice shell located in Zhejiang province of China is introduced, and some key problems are discussed in this paper. Especially, tensile cable is a key element in large span suspended structures. And the construction of tensile cable is the key technology problem as the tensile force of tensile cable is very sensitive to the construction precision. The tension slacken analysis method is used to obtain the control stress and complete the work with only one time tensile construction. Results of the engineering show that the construction process is simple and the construction scheme is economic.

Research on Key Technology of Shield Machine Main Drive Sealing

2014 ◽  
Vol 580-583 ◽  
pp. 1081-1087
Author(s):  
Run Jun Li ◽  
Ren Liang Shan ◽  
Yi Xiong Gui ◽  
Jin Zhong Yang ◽  
Jian Liu
Keyword(s):  
Construction Process ◽  
Key Technology ◽  
Seal Failure ◽  
Fracture Failure ◽  
Practical Project ◽  
Shield Machine

Due to poor bonding of a shield machine main drive leading to seal failure sealing fracture failure occurs, the proposed installation forms of adhesive sealing method is replaced by platen method, and seal material NBR replaced by a fluorine rubber, so that the combination of the housing seal is more reliable, avoiding the fracture caused by discontinuity of local sealing. Construction process increases the injection of three different oils enhancing the sealing effect. Through the application of practical project, no failure appears after sealing transformation.

scholarly journals Optimization Analysis of Construction Scheme for Large-Span Highway Tunnel Under Complex Conditions

2018 ◽  
Vol 64 (4) ◽  
pp. 55-68
Author(s):  
Jiao Pengfei ◽  
Xiao Zhang ◽  
Xinzhi Li ◽  
Bei Jiang ◽  
Bohong Liu ◽  
...  
Keyword(s):  
Ground Deformation ◽  
Three Dimensional ◽  
Simulation Software ◽  
Construction Process ◽  
Diagram Method ◽  
Deformation Control ◽  
Large Span ◽  
Construction Methods ◽  
Rock Stability ◽  
Construction Scheme

AbstractThe construction process of the tunnel ground deformation regularity of surrounding rock, stability, deformation control of tunnel surface based on the requirements, combined with the characteristics of shallow tunnel with large-span. Used three-dimensional numerical simulation software, established a dynamic tunnel analysis program to simulate the construction process of center cross-diagram method and double sidewall drift method. Based on the stratum deformation, supporting force and analysis of plastic zone distribution, comparative analysis of engineering adaptability of different construction methods from the construction process and construction mechanics, get optimization tunnel construction scheme.

The York-Arup cable experiments: Implications for the fire design of cable-supported bridges

2021 ◽  
Author(s):  
Benjamin Nicoletta ◽  
John Gales ◽  
Panagiotis Kotsovinos
Keyword(s):  
Thermal Strain ◽  
Experimental Studies ◽  
Thermal Response ◽  
Structural Response ◽  
Fire Performance ◽  
Stay Cable ◽  
Stay Cables ◽  
Bridge Structures ◽  
Recent Trends ◽  
High Level

<p>Recent trends towards performance-based fire designs for complex and critical structures have posed questions about the fire resilience of bridge infrastructure. There are little-to-no code requirements for bridge fire resistance and practitioner guidance on the subject is limited. Research on the fire performance of cable-supported bridge structures is scarce and knowledge gaps persist that inhibit more informed fire protection designs in a variety of bridge types. There have been few numerical or experimental studies that investigate the fire performance of steel stay-cables for use in cable-supported bridges. The thermal response of these members is critical as cable systems are highly dependent on the response of individual members, such as in the case of an anchor cable for example. The study herein examines the thermal response of several varieties of unloaded steel- stay cable during exposure to a non-standard methanol pool fire and the implications for the structural response of a cable-supported bridge. Experimental thermal strain data from fire tests of various stay-cables is used to inform high-level insights for the global response of a cable-supported bridge. Namely, the effects of cable thermal expansion on the overall cable system is approximated.</p>

Experimental Study of Fatigue Performance of Stay Cable Damper

2014 ◽  
Vol 487 ◽  
pp. 404-407
Author(s):  
Dong Liang ◽  
Zi Shuo Li
Keyword(s):  
Experimental Study ◽  
Good Condition ◽  
Experimental Results ◽  
Test Results ◽  
Stay Cable ◽  
Damping Force ◽  
Durability Test ◽  
Equivalent Damping ◽  
Stay Cables ◽  
Performance Deterioration

Oil dampers are widely used as a popular countermeasure to mitigate the stay cables vibration. In this study, one actual oil damper designed for some long cable-stayed was experimentally investigated to evaluate the durability. 4 million cycles loading, with frequency of 4 Hz and amplitude of 1 mm, was imposed on the damper. The excitation displacement and damping force were measured and the equivalent damping was calculated from the experimental results. The stiffness effects of dampers behaved during durability tests were also analyzed quantitatively. The test results showed that the dampers were still in good condition after 4 million cycles loading and the dampers temperatures were stable at 50 degree centigrade during the test. According to the durability test results, a model for performance deterioration of damper was proposed to predict the lifetime of oil dampers.

Construction Monitoring Technology Research on Large-Span V Structure Tied Arch Bridge

2013 ◽  
Vol 351-352 ◽  
pp. 1240-1243 ◽  
Author(s):  
Ting Yin ◽  
Wei Zhang ◽  
Yan Bo Zhao ◽  
Xiao Long Sun
Keyword(s):  
Actual State ◽  
Construction Process ◽  
Bridge Construction ◽  
Monitoring Point ◽  
Monitoring Technology ◽  
Construction Monitoring ◽  
Arch Bridge ◽  
Large Span ◽  
Long Span ◽  
Tied Arch Bridge

Large-span V structure tied arch bridge structure system is complex. In order to make the actual state of the bridge into the ideal state of maximum close to the design, we must make real-time monitoring in the key parts of the structure, and adjust to the design of the data by analysis calculated, to ensure the safety and reliability of arch bridge in the course of construction and into stress after the completed bridge. Combined with the construction monitoring of the main Xinglong Bridge on Si River, this paper introduces the main bridge construction process measurement a preliminary study on the large span V configuration basket tied arch bridge construction monitoring technology. Based on the construction monitoring of Xinglong Bridge on Si River, this paper introduces the main contents and methods of monitoring point location, monitoring control of construction process, and discussed the construction monitoring technology of long-span X-style tied arch bridge V structure.

scholarly journals Serviceability Assessment Method of Stay Cables with Vibration Control Using First-Passage Probability

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Seunghoo Jeong ◽  
Young-Joo Lee ◽  
Sung-Han Sim
Keyword(s):  
Vibration Control ◽  
Control Method ◽  
Principal Component ◽  
Assessment Method ◽  
Stay Cable ◽  
First Passage ◽  
Long Span Bridges ◽  
Long Span ◽  
Stay Cables ◽  
Cable Stayed Bridges

As the construction of long-span bridges such as cable-stayed bridges increases worldwide, maintaining bridge serviceability and operability has become an important issue in civil engineering. The stay cable is a principal component of cable-stayed bridges and is generally lightly damped and intrinsically vulnerable to vibration. Excessive vibrations in stay cables can potentially cause long-term fatigue accumulation and serviceability issues. Previous studies have mainly focused on the mitigation of cable vibration within an acceptable operational level, while little attention has been paid to the quantitative assessment of serviceability enhancement provided by vibration control. This study accordingly proposed and evaluated a serviceability assessment method for stay cables equipped with vibration control. Cable serviceability failure was defined according to the range of acceptable cable responses provided in most bridge design codes. The cable serviceability failure probability was then determined by means of the first-passage problem using VanMarcke’s approximation. The proposed approach effectively allows the probability of serviceability failure to be calculated depending on the properties of any installed vibration control method. To demonstrate the proposed method, the stay cables of the Second Jindo Bridge in South Korea were evaluated and the analysis results accurately reflected cable behavior during a known wind event and show that the appropriate selection of vibration control method and properties can effectively reduce the probability of serviceability failure.

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