Aerodynamic instability of a hinged-deck cross-section cable-stayed bridge

2020 ◽  
Vol 198 ◽  
pp. 104110
Author(s):  
Elena Lopez-Nuñez ◽  
Mikel Ogueta-Gutiérrez ◽  
Raul Manzanares-Bercial ◽  
Omar Gómez-Ortega ◽  
Sebastián Franchini ◽  
...  
Keyword(s):  
Cross Section ◽  
Cable Stayed Bridge ◽  
Aerodynamic Instability

Fast Tracking the Pulau Poh Cable-stayed Bridge

2018 ◽  
Author(s):  
Chet Chie Voon ◽  
Hiang Miang Goh ◽  
Chuan Seng Koo
Keyword(s):  
Cross Section ◽  
Fast Track ◽  
Rainfall Intensity ◽  
Stay Cable ◽  
Bridge Design ◽  
Environmental Challenges ◽  
High Rainfall ◽  
Fast Tracking ◽  
Cable Stayed Bridge ◽  
Design Life

<p>The construction of the Pulau Poh cable-stayed bridge has been challenging both technically and environmentally. The curved pylon shape in two planes, with changing cross section and heavily congested reinforcement pose constructability concerns. Accurate geometry control and positioning of stay cable anchorages within the pylon is crucial to ensure the bridge meets its intended design life. Located in an area with high rainfall intensity presents additional environmental challenges, where working areas are constantly submerged. To address the challenges and meet the project deadline, innovative construction methodologies are being adopted. The bridge design was also revisited, taking into consideration the construction approach. This paper aims to explain the challenges faced and methods used to fast track the construction of the Pulau Poh cable-stayed bridge.</p>

Aesthetic Design of Odawara Port Bridge

1996 ◽  
Vol 1549 (1) ◽  
pp. 108-113
Author(s):  
Tsuguo Oishi ◽  
Yasuo Inokuma
Keyword(s):  
Cross Section ◽  
Prestressed Concrete ◽  
Surrounding Area ◽  
Box Girder ◽  
Aesthetic Design ◽  
Cable Stayed Bridge ◽  
The World ◽  
Bridge Type ◽  
Main Girder ◽  
Tower Height

The Odawara Port Bridge is located at the mouth of Odawara Port. Selecting a bridge type that symbolized the entire project and blended well with the surrounding area was critical. To achieve this, an extra-dosed prestressed concrete box girder with a main span of 122 m was selected. Construction of this bridge type is the first in the world. Special characteristics of this bridge type are a lower tower height than that of a cable-stayed bridge, the use of a saddle at the top of the towers, and the incorporation of epoxy-coated strands for diagonal cables. The design of the various sections of the bridge was achieved by integrating the characteristic shape of the towers with cable profiles while establishing horizontal continuity with the main girder. As a result of the integration process, the following design objectives were adopted: (a) constant main girder depth; (b) inverted trapezoidal main girder cross section; (c) towers without a connecting beam at the top; (d) a fan-shaped saddle; (e) compact cable vibration dampers; (f) graded metallic coloring of cables; (g) integrated steel railing and road surface lighting; (h) nighttime bridge lighting, and (i) encased drainage pipes.

Analysis of Thermal Effect on Girder with Side Main Rib Section

2014 ◽  
Vol 501-504 ◽  
pp. 495-500
Author(s):  
Niu Jing Ma
Keyword(s):  
Temperature Field ◽  
Temperature Gradient ◽  
Thermal Effect ◽  
Cross Section ◽  
Stress And Strain ◽  
Cable Stayed Bridge ◽  
The Common ◽  
Equivalent Load ◽  
Thermal Difference

According to the common girder with side main rib section of PC cable-stayed bridge with double cable planes, a computational model of two-dimension temperature field is presented. Temperature gradient of main rib, small longitudinal rib, top plate and flange plate was computed respectively, and then the stress and strain of each section are derived through plane cross-section assumption. For the cable-stayed bridge, member structure FEM is applied to compute node equivalent load and displacement, which resulted from both sunshine and seasonal thermal difference. Finally, a case study is analyzed, the results showed: computed and measured deflection of girder that result from thermal effect are very close, therefore, this method is feasible.

Railway lines of R.F.I. and Ferrotramviaria Crossing in Bari – “Adriatico” cable stayed bridge

2021 ◽  
Author(s):  
Pierangelo Pistoletti ◽  
Paolo Maestrelli ◽  
Simone Varni ◽  
Marco Sciarra ◽  
Andrea Danelon
Keyword(s):  
Cross Section ◽  
Cable Stayed Bridge ◽  
Total Length ◽  
Design Construction

<p>This paper presents design and launching of the railways crossing in Bari. The bridge is made up of ten straight spans, 50 + 50 + 50 + 50 + 45 + 112.5 + 112.5 + 66 + 38.8 + 51.2 m, for a total length of 626 m. The longest spans are a cable-stayed bridge with a 70 m high steel pylon, Y shaped, 60° rotated in respect to the deck axis. The deck, supported by 30 stays about every 15 m, has a cross section 25.5m wide, sub-divided in two carriageways of 8.5 m each, separated by a central median of 2.5 m in width. The height of the beam is equal to 2.5 m and the slab has a thickness of 30 cm. Design, construction and launching choices will be described below.</p>

Aesthetics of Cable-Stayed Bridges

2000 ◽  
Vol 1696 (1) ◽  
pp. 34-43
Author(s):  
Man-Chung Tang
Keyword(s):  
Cross Section ◽  
Cable Stayed Bridge ◽  
The Cross ◽  
Cable Stayed Bridges ◽  
Land Scape

Among the various bridge types, cable-stayed bridges offer the most intriguing configurations. By varying the shape of the towers, the arrangement of the cables, and the cross section of the deck girder, it is almost always possible to create a cable-stayed bridge to fit in any given land-scape. Since their debut 45 years ago, the beauty of cable-stayed bridges has piqued the interest of engineers and nonengineers alike.

Research of Three-Truss Cable-Stayed Bridge Spatial Characteristic

2014 ◽  
Vol 638-640 ◽  
pp. 1024-1027
Author(s):  
Jun Feng Guo
Keyword(s):  
Cross Section ◽  
Beam Element ◽  
Spatial Characteristic ◽  
Deformation Analysis ◽  
Flexible Beam ◽  
Standard Requirement ◽  
Complex Load ◽  
Cable Stayed Bridge ◽  
Cable Force ◽  
Space Beam Element

Wuhan Tianxingzhou Yangtze River Rail-cum-Road Bridge is the first four line rail cable-stayed bridge in china, with three-truss cross section. The new structure presents complex load performance, especially the spatial mechanical characteristics, because the bridge supports six lanes and four railway load, inevitably the main truss will produce a great torque, leading to three-truss cross section distortion and warping deformation. Analysis of the whole bridge spatial structures is carried out. The space shear flexible beam grillage model is used for bridge structure simulation, the upper and lower vertical member and the horizontal link simulated with beam element, while the pylon with space beam element, the cable with cable element. Though the calculation of the cable force and stress, the main girders stress, the pylon stress, the displacement of the main girder and the pylon, it can be shown that the space force and displacement keep within the standard requirement.

Cable stayed bridge over the Crati river in Cosenza

2021 ◽  
Author(s):  
Pierangelo Pistoletti ◽  
Marcello Vaccarezza ◽  
Simone Varni ◽  
Paolo Roggero ◽  
Marco Sciarra
Keyword(s):  
Reinforced Concrete ◽  
Cross Section ◽  
Concrete Structure ◽  
Constant Width ◽  
Variable Cross Section ◽  
Variable Cross ◽  
Middle Plane ◽  
Reinforced Concrete Structure ◽  
Cable Stayed Bridge ◽  
The City

<p>The “Bridge over the Crati River” is a cable stayed bridge in a single span of 114.725m, designed by the architect Santiago Calatrava for the city of Cosenza. The main elements are the main tower, the deck, the cables, the reinforced concrete pier and the abutments; one of those is the restraint of the main rear cables. The steel tower has a variable cross section that tapers towards the top where the cables anchoring devices are located. It is inclined of 51° from the vertical and it is anchored by means of 2 anchor stays. The bridge is composed of two parts: a reinforced concrete structure with a span of 30 m that overhangs the railway and the composite cable-stayed bridge with a span of 114.725 m. The cross section of the bridge has a constant width of 24 m all over its length. The deck is sub-divided in four vehicle lanes, two in each direction, divided by a central pedestrian lane slightly raised in comparison with the vehicle lanes. There are 40 stays, placed symmetrically in respect to the middle plane of the structure and arranged according to a mixed geometry between an harp and a fan shape to facilitate the positioning of the anchoring devices at the top of the pylon.</p>

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