scholarly journals A Study on the Selection of Steel or Prestressed Concrete Cable Stayed Bridge by Using Disaggregate Behavioral Model.

1994 ◽  
pp. 105-114
Author(s):  
Yoshinori Araki ◽  
Hitoshi Furuta ◽  
Eriko Maeda ◽  
Kohei Furukawa
Keyword(s):  
Prestressed Concrete ◽  
Behavioral Model ◽  
Cable Stayed Bridge ◽  
Selection Of

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.

Calibration of the Ontario Highway Bridge Design Code 1991 edition

1994 ◽  
Vol 21 (1) ◽  
pp. 25-35 ◽  
Author(s):  
Andrzej S. Nowak ◽  
Hid N. Grouni
Keyword(s):  
Reinforced Concrete ◽  
Reliability Analysis ◽  
Prestressed Concrete ◽  
Highway Bridge ◽  
Live Load ◽  
Design Code ◽  
Reliability Indices ◽  
Resistance Factors ◽  
Load And Resistance Factors ◽  
Selection Of

The paper describes the calculation of load and resistance factors for the Ontario Highway Bridge Design Code (OHBDC) 1991 edition. The work involved the development of load and resistance models, the selection of the reliability analysis method, and the calculation of the reliability indices. The statistical models for load and resistance are reviewed. The considered load components include dead load, live load, and dynamic load. Resistance models are developed for girder bridges (steel, reinforced concrete, and prestressed concrete). A reliability analysis is performed for selected representative structures. Reliability indices are calculated using an iterative procedure. The calculations are performed for bridge girders designed using OHBDC 1983 edition. The resulting reliability indices are between 3 and 4 for steel girders and reinforced concrete T-beams, and between 3.5 and 5 for prestressed concrete girders. Lower values are observed for shorter spans (up to 30–40 m). The acceptance criterion in the selection of load and resistance factors is closeness to the target reliability level. The analysis confirmed the need to increase the design live load for shorter spans. Partial resistance factors are considered for steel and concrete. The criteria for the evaluation of existing bridges are based on the reliability analysis and economic considerations. Key words: bridge code, calibration, load factor, resistance factor, reliability index.

Research on Construction Technology of Inclined Pylon of Single Pylon Cable-Stayed Bridge without Backstays

2011 ◽  
Vol 90-93 ◽  
pp. 1168-1172
Author(s):  
Ying Lei Zhu
Keyword(s):  
Computational Model ◽  
Henan Province ◽  
Construction Technology ◽  
Box Girder ◽  
Construction Period ◽  
Cable Stayed Bridge ◽  
New Type ◽  
Complex Construction ◽  
Longitudinal Cracks ◽  
Selection Of

A new type of cable-stayed bridge, single pylon cable-stayed bridge without backstays is used in the Zhenshui Road Bridge in Xinmi City, China’s Henan Province, which adopts PC box girder with corrugated steel webs. It has many advantages such as light girder deadweight, low pylon height and avoiding webs longitudinal cracks. This novel bridge is adopted firstly in China. Cast-in-place method with bracket is used in the construction of the bridge’s inclined pylon because of its complex construction technology and tight construction period. In this paper, interests are focus on the scheme comparison and selection of bracket construction, the establishment of bracket’s computational model and the result of numeric analysis etc. The chief aim of this investigation was provides useful reference and enlightenment to similar bridge types.

Prediction of Parameters Error in Method of Construction Control in Cable-Stayed Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 2385-2389
Author(s):  
Chang Song Chen ◽  
Dong Huang Yan ◽  
Dao Fu Dong
Keyword(s):  
Theory Model ◽  
Grey Prediction ◽  
Prediction Theory ◽  
Influence Matrix ◽  
State Variable ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Data Process ◽  
Selection Of

To reach the optimum mechanics state of long span cable-stayed bridge after it erected, a method is proposed to predict and adjust parameter in construct control of cable-stayed bridge, which integrates the grey prediction theory model and influence matrix adjustment method compositively. The selection of parameters of construct control, reasonable objects of adjustment and determination of state variable during prediction data process are also studied deeply, and a perfect procedure and method is established to identify, predict and optimizing adjust parameters. The method is also verified by construct control of the longest span pre-stressed concrete bridge in Asia, and the effect of construct is very successful. This work of construct control can absolutely demonstrate the validity and practicability of the method.

scholarly journals THE INFLUENCE OF THE PRESTRESS OF REINFORCED STEEL ON THE BEHAVIOUR OF THE FLEXURAL ELEMENTS OF REINFORCED CONCRETE / ARMATŪROS IŠANKSTINIŲ ĮTEMPIŲ ĮTAKA GELŽBETONINIŲ LENKIAMŲJŲ ELEMENTŲ ELGSENAI

2013 ◽  
Vol 5 (5) ◽  
pp. 474-480
Author(s):  
Aidas Jokūbaitis
Keyword(s):  
Reinforced Concrete ◽  
Prestressed Concrete ◽  
Advantages And Disadvantages ◽  
Compressive Stresses ◽  
Reinforced Steel ◽  
Selection Of

This article briefly discusses the essence of prestressed concrete,its advantages and disadvantages. The analysis of prestress lossesis done according to different standards. The paper explainspretensioning force and selection of its eccentricity as well asanalyzes the influence of beam cracking according to limitationson concrete tensile and compressive stresses. Santrauka Publikacijoje glaustai aptarta įtemptojo gelžbetonio esmė, pranašumai ir trūkumai. Atlikta nuostolių vertinimo skirtingų normų metodikomis skaičiavimo analizė. Analizuojamas racionalios armatūros įtempimo jėgos ir jos pridėties ekscentriciteto parinkimas. Nagrinėjama leistinųjų betono tempimo ir gniuždymo įtempių įtaka sijų pleišėjimui.

Structural behavior of cable anchorage zones in prestressed concrete cable-stayed bridge

2002 ◽  
Vol 29 (1) ◽  
pp. 171-180 ◽  
Author(s):  
Byung-Wan Jo ◽  
Yunn-Ju Byun ◽  
Ghi-Ho Tae
Keyword(s):  
Stress Distribution ◽  
Prestressed Concrete ◽  
Three Dimensional ◽  
Stress Distributions ◽  
Anchor Plate ◽  
Element Analysis ◽  
Cable Stayed Bridge ◽  
Local Modeling ◽  
Actual Design ◽  
Tendon Force

Since the cable anchorage zone in a prestressed concrete cable-stayed bridge is subjected to a large amount of concentrated tendon force, it shows very complicated stress distributions which can cause serious local cracks. Accordingly, it is necessary to investigate the parameters affecting the stress distribution, such as the cable inclination, the position of the anchor plate, the modeling method, and three-dimensional effects. The tensile stress distribution in the anchorage zone is compared to the actual design condition by varing the stiffness of spring elements in the local modeling, and an appropriate position for the anchor plate is determined. The results provide elementary data for the stress state in the anchorage zones and encourage more efficient designs.Key words: finite element analysis, bursting stress, spalling stress, cable anchorage zone, cable-stayed bridge.

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