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>

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.

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

Image Analysis of a Moving Bubble Train in a Tube

2014 ◽  
Vol 487 ◽  
pp. 440-443
Author(s):  
Zhan Xu Wang
Keyword(s):  
Porous Media ◽  
Image Analysis ◽  
Cross Section ◽  
Cross Sections ◽  
Test Tube ◽  
Visual Images ◽  
Total Length ◽  
Foam In Porous Media

A tube with varying cross sections can capture some essential features of the motion of foam in porous media. In this paper, experiments were carried out concerning a moving bubbles train through cylindrical ducts with sinusoidal cross-section. The test tube has total length of 1.14 m and has constrictions at interval of 0.0095 m. The visual images of a single lamella motion were recorded and were interpreted. It is found the lamella decelerates in the diverging portion while accelerates in the converging part of the tube.

INFLUENCE OF THE SLOPE FOR THE DISTORTION EFFECT OF PRE-STRESSED SKEWED BOX-SECTION GIRDER BRIDGE

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Jian-Qing Bu ◽  
Shuo Li
Keyword(s):  
Cross Section ◽  
Longitudinal Direction ◽  
Element Analysis ◽  
Box Section ◽  
The Finite Element Analysis ◽  
Distortion Effect ◽  
Girder Bridge ◽  
Bridge Models ◽  
Distortion Angle ◽  
Design Construction

In order to analyze the distortion effects of the skewed PC box-section girder bridge, a simply-supported and three-span continuous skewed PC box-section girder bridge models are built by using the finite element analysis software ANSYS in this paper. First of all, the distortion effects in the longitudinal direction are analyzed for the bridge models and the most disadvantage section are found. Then the longitudinal distortion effects how to vary with the slope is discussed. The results show that the influence of slope is remarkable, with the increase of slope, distortion is becoming more and more large, and it is proportional to the slope degree, the distortion angle of 1/4 span and 3/4 cross section of the bridge is the largest. Therefore, in the process of design, construction and maintenance, the deformation of unfavorable cross section should be paid special attention.

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.

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.

Bridge over Canal Laranjeiras, Laguna, Brazil

2015 ◽  
Vol 1106 ◽  
pp. 183-186
Author(s):  
Richard Novák ◽  
Jiří Stráský ◽  
Petr Kocourek ◽  
Leonard Šopík
Keyword(s):  
Federal Government ◽  
Conceptual Design ◽  
Main Part ◽  
Box Section ◽  
Cable Stayed Bridge ◽  
Total Length ◽  
Navigation Channel ◽  
Main Plane ◽  
South Of Brazil ◽  
The Town

On the south of Brazil the main Brazilian highway pass around the town Laguna only on a dual lane carriage way. There are regular traffic congestions with several hours of delay. The federal government invests a lot of money to increase the capacity of the main highway. The bridge over Canal Laranjeiras takes part of these improvements. It has a total length of 2 800m and overpasses two times the railway, the Laguna bay to Imauri and future navigation channel Laranjeiras. Its main part consists of 400m length of cable-stayed bridge with two pylons a 200m main span. The pylons are 76m height and are formed by box section. The cable-stayed part is situated in plan curvature and the main plane of longitudinal stays is supplemented by two planes of transversal stays for each pylon. The paper deals with conceptual design of the bridge and construction methodology.

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.

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