Double Cable System Suspension Bridge, Indonesia

1996 ◽  
Vol 6 (3) ◽  
pp. 164-165
Author(s):  
Syarifudin Alambai ◽  
Mustazir Iwan Zarkasi
Keyword(s):  
Suspension Bridge ◽  
Cable System

Fatigue Testing of Cables – Issues and Lessons Learned

2021 ◽  
Author(s):  
Jeremy Lahaye ◽  
Dan Fitzwilliam
Keyword(s):  
Fatigue Testing ◽  
Suspension Bridge ◽  
Lessons Learned ◽  
Bridge Design ◽  
Cable System ◽  
Pedestrian Bridge ◽  
Main Cable ◽  
Pedestrian Bridges ◽  
Cable Systems ◽  
Scioto River

<p>Pedestrian bridge design is becoming more demanding and challenging as architects create new ways to experience bridges. This is particularly evident in the design of cable supported pedestrian structures.</p><p>Innovative and creative concepts require a higher level of fatigue testing to verify cable systems meet design demands and reach service design life.</p><p>The Scioto River Pedestrian Bridge is one such example of innovative pedestrian bridge design. The structure is a suspension bridge with a non-redundant main cable system. Cable supported pedestrian bridges have demonstrated a proclivity for fatigue issues in the past. To address this concern, refined fatigue testing requirements were developed which were intended to verify that the cable system and manufacturing quality control were fit for the unique structure demands. The lessons learned through the process of design, testing, and construction of the cables on this project are useful tools for teams seeking to successfully deliver future cable supported bridge projects.</p>

The Influence of the Cable Parameters on Vibration Characteristics of a Long-Span Suspension Bridge

2013 ◽  
Vol 694-697 ◽  
pp. 476-480
Author(s):  
Hai Qing Zhu ◽  
Xie Dong Zhang
Keyword(s):  
Dynamic Characteristics ◽  
Optimization Design ◽  
Suspension Bridge ◽  
Element Model ◽  
Suspension Bridges ◽  
Cable System ◽  
Long Span ◽  
Long Span Bridge ◽  
The World ◽  
Set Up

The type of suspension bridge is used all over the world because of its long span. But the cable system which forced the main load is vulnerable to damage and corrosion. In order to discuss the dynamic characteristics of typical long-span suspension bridges, a finite-element model of a typical long-span bridge was set up with ANSYS, and its top ten frequencies and vibration types were calculated. What’s more the dynamic characteristics under the variations such as modulus of elasticity, sectional size of the cable system, initial strain of the cable, as well as the deficiency of suspender cable were discussed. According to the analysis, the researchers got the conclusion that how the cable system impacts the whole bridge and which suspender cable plays the most significant role. Moreover, the results could serve as some valuable references for the optimization design and preservation of long-span suspension bridges.

Modal analysis of tower-cable system of Tsing Ma long suspension bridge

1997 ◽  
Vol 19 (10) ◽  
pp. 857-867 ◽  
Author(s):  
Y.L. Xu ◽  
J.M. Ko ◽  
Z. Yu
Keyword(s):  
Modal Analysis ◽  
Suspension Bridge ◽  
Cable System

Analysis on Construction Control about Main Cable System of Cableway Bridge

2014 ◽  
Vol 711 ◽  
pp. 361-365
Author(s):  
Guo Jun Yang ◽  
Xian Wu Hao ◽  
Ji Peng Yang
Keyword(s):  
Suspension Bridge ◽  
Form Finding ◽  
Cable System ◽  
Method Of Calculation ◽  
Main Cable ◽  
Practical Engineering ◽  
Cable Force ◽  
Design Value ◽  
The Relationship ◽  
Good Agreement

Cableway bridge is a type of suspension bridge which mainly depends on the cable to suffer the force. The method of calculation unstressed length by parabolic method is introduced in this paper, and the form finding analysis of main cable is also analyzed, thus the method of calculation vector height of middle cross and cable force is concluded. Finally, the relationship between vector height and cable force is fitted based on the practical engineering, bedsides, the error is analyzed between design value and measured value, which comes to the conclusion that measured value is good agreement with design value.

scholarly journals Risk Assessment Method for Cable System Construction of Long-Span Suspension Bridge Based on Cloud Model

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Zhifang Lu ◽  
Chaofan Wei ◽  
Muyu Liu ◽  
Xiaoguang Deng
Keyword(s):  
Risk Assessment ◽  
Cloud Model ◽  
Suspension Bridge ◽  
Assessment Method ◽  
Assessment Model ◽  
Suspension Bridges ◽  
System Construction ◽  
Cable System ◽  
Long Span ◽  
Risk Assessment Method

Cable system construction is one of the most risky construction stages of long-span suspension bridges, and a reliable risk assessment is an important means to ensure the construction safety. This study proposes a risk assessment method for cable system construction of suspension bridges based on the cloud model, which can combine randomness and fuzziness of risk information effectively. First, a multilevel evaluation index system is built by disassembling the process of cable system construction. Next, the index weights are calculated by the uncertain analytic hierarchy process (AHP). Then, according to the cloud model, a risk assessment model for cable system construction of the suspension bridge is established by realizing the mutual transformation between qualitative language and quantified data. Finally, an illustrative example concerning the risk of cable system construction of Wuhan Yang-Si-Gang Yangtze River Bridge is provided to demonstrate the feasibility and objectivity of the proposed method.

scholarly journals An Improved Analytical Algorithm on Main Cable System of Suspension Bridge

2018 ◽  
Vol 8 (8) ◽  
pp. 1358 ◽  
Author(s):  
Chuanxi Li ◽  
Jun He ◽  
Zhe Zhang ◽  
Yang Liu ◽  
Hongjun Ke ◽  
...  
Keyword(s):  
Search Algorithm ◽  
Suspension Bridge ◽  
Internal Force ◽  
Element Formulation ◽  
Cable System ◽  
Tangent Stiffness Matrix ◽  
Main Cable ◽  
Penalty Factor ◽  
Analytical Algorithm ◽  
Internal Force Vector

This paper develops an improved analytical algorithm on the main cable system of suspension bridge. A catenary cable element is presented for the nonlinear analysis on main cable system that is subjected to static loadings. The tangent stiffness matrix and internal force vector of the element are derived explicitly based on the exact analytical expressions of elastic catenary. Self-weight of the cables can be directly considered without any approximations. The effect of pre-tension of cable is also included in the element formulation. A search algorithm with the penalty factor is introduced to identify the initial components for convergence with high precision and fast speed. Numerical examples are presented and discussed to illustrate the accuracy and efficiency of the proposed analytical algorithm.

Partially Strengthened Main Cable System for the Rehabilitation of an Old Suspension Bridge

2016 ◽  
Author(s):  
Bobe Lee ◽  
Minjae Lee ◽  
Taekwun Park
Keyword(s):  
Aging Effect ◽  
Suspension Bridge ◽  
New Method ◽  
Suspension Bridges ◽  
Cable System ◽  
Main Cable ◽  
Bridge Rehabilitation ◽  
The World ◽  
Extent Of Damage

Bridge rehabilitation projects for enhancing the safety and serviceability of old bridges are carried out widely around the world. Especially, suspension bridges are intensively maintained with high construction budgets. The damaged hanger rope, stiffening girder and main tower in suspension bridges can be repaired, strengthened or replaced. However, in the case of a main cable, the remedy until now only removes rust and applies surface repainting. Basically, the main cable consists of thousands of small wires, which is not replaceable. A damaged or disconnected wire also cannot be repaired or replaced. This paper suggests a new method for strengthening a main cable that is deteriorated by the aging effect. By small cables connecting a couple of cable bands on both sides from a pylon, the strength of the main cable can be increased and the possibility of slip of the cable bands are decreased. This suggestion is introduced by an example of an old suspension bridge that has been opened to traffic for forty years. The reinforcing level of the main cable should be decided by the extent of damage. Hence, the level of strengthening of the main cable can be easily controlled by only the amount of ancillary cables.

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