scholarly journals Perencanaan Jembatan Beton Prategang Dengan Bentang 24 Meter Berdasarkan Standar Nasional Indonesia (SNI)

2018 ◽  
pp. 45-61
Author(s):  
Samsuardi Batubara ◽  
Larno Simatupang
Keyword(s):  
Prestressed Concrete ◽  
Structural Design ◽  
Bridge Structure ◽  
Dead Load ◽  
Analysis And Design ◽  
Vehicle Load ◽  
Nonlinear Design ◽  
Internal Forces ◽  
Prestressed Beam ◽  
Concrete Girder

Bridge is used to connect divided road sections, which are seperated by obstacles such as deep valley, river, lake, irigation canals, railway, and also grade seperated roadway. The construction of a bridge must comply with several requirements namely stiffness, deflection, and load bearing requirement. This research is a structural analysis and design of prestressed concrete girder beam with 24m length and 6.5m width. Working loads are dead load (MS), additional dead load (MA), vehicle load (TD), braking load (TB), pedestrian load (TP), and wind load (EW). Internal forces are obtained using Finite Element Method in SAP2000 nonlinear. Design of the bridge structure follows the national standar SNI 1725:2016 and RSNI T-12-2004. Result of structural design and analysis of the prestressed concrete girder beam uses 4 prestressed beam (160cm height, 1.83m distance between beam), 20cm bridge slab, and diaphragm with the dimension of 20x165x125cm . The number of tendon used in the design is 3, and each tendon comprises of 12 strand. The amount of prestressed force caused by jacking is Pj=5351.30 kN with loss prestress 24.52%. Deflection caused on the prestressed beam is dmaks = 12.6 mm (<dijin =80 mm), and occuring stress is 8696 kPa (< allowed stress 18675 kPa).

Static Analysis of Prestressed Concrete Bridge with Slant-Legged Rigid Frame

2012 ◽  
Vol 446-449 ◽  
pp. 1172-1175
Author(s):  
Xiao Ke Li ◽  
Xi Jian Liang ◽  
Shi Ming Liu
Keyword(s):  
Static Analysis ◽  
Prestressed Concrete ◽  
Concrete Bridge ◽  
Dead Load ◽  
Vehicle Load ◽  
Box Beam ◽  
Rigid Frame ◽  
Shrinkage And Creep ◽  
Internal Forces ◽  
Prestressed Concrete Bridge

This paper introduces the main dimensions and drawings, and discusses the static analytical results of a prestressed concrete bridge with slant-legged rigid frame. The numerical mode of this bridge was built by the specialist FEM software. The results show that the central span of box-beam and the slant-legs forms an arch-like structure which brings these members into compressive-bending states, the side span of box-beam is in bending. For the box-beam, the internal forces mainly come from the dead load, the prestress effects and the vehicle load. The sedimentation of supports and the entire warming or cooling have certain influence on the side span box-beam and the slant-legs. Decreasing the shrinkage and creep of concrete is also important for this bridge.

Load Rating of Prestressed Concrete Girder Bridges

2005 ◽  
Vol 1928 (1) ◽  
pp. 53-63 ◽  
Author(s):  
Brandy J. Rogers ◽  
David V. Jáuregui
Keyword(s):  
New Mexico ◽  
Prestressed Concrete ◽  
Resistance Factor ◽  
Live Load ◽  
Dead Load ◽  
Girder Bridges ◽  
Load Effects ◽  
The Dead ◽  
Load And Resistance Factor ◽  
Concrete Girder

In light of the adoption of the load and resistance factor design (LRFD) philosophy by the AASHTO Subcommittee on Bridges and Structures, research efforts are under way to facilitate the transition from load factor rating (LFR) to load and resistance factor rating (LRFR) in New Mexico. Five prestressed concrete girder bridges, courtesy of the New Mexico bridge inventory, were rated with the BRASS-GIRDER and BRASS-GIRDER (LRFD) structural software. The objectives for this study were to evaluate and verify the BRASS (bridge rating and analysis of structural systems) software, to identify the source of dissension between LFR and LRFR rating factors, and to examine any trends in the rating factors as affected by bridge geometry. The comparison of LFR and LRFR focused on both flexure and shear for the strength limit state. The LRFR method generally yielded lower rating factors for flexure, with the longer-span bridges demonstrating a larger deviation between LFR and LRFR. The live load effects were identified as the major factor contributing to the difference in flexure ratings; the dead load effects and flexural resistance had little effect. The LRFR rating factors for shear also were generally lower than those produced by LFR. The discrepancy in the shear ratings was caused by both the live load effects and shear resistance. The dead load effects contributed little to the variation in LFR and LRFR rating factors for shear. Overall, the shear ratings controlled over those based on flexure.

Experimental Study on Mechanical Behaviors of the Prestressed Concrete Girder

2007 ◽  
Vol 348-349 ◽  
pp. 361-364
Author(s):  
Jing Xi Chen ◽  
Guang Zhang ◽  
Hong Fei Li ◽  
Fa Min Chen
Keyword(s):  
Prestressed Concrete ◽  
Load Test ◽  
Bridge Structure ◽  
Mechanical Behaviors ◽  
Uniform Load ◽  
Concentrated Load ◽  
Concrete Girders ◽  
New Type ◽  
Mixed Load ◽  
Concrete Girder

The prestressed concrete girder is a new type of bridge structure. Compared with the traditional concrete girders, its crack resistance has been greatly improved. This type of new girders was used in a certain viaduct in China. In order to probe working characteristics of this type of new girders, some site tests, such as tension-camber test, concentrated load test, uniform load test and mixed load test, were carried out. The results of the tests are analyzed and summed up in this paper.

Calculation on Internal Force Effect of a High-Speed Highway Prestressed Concrete Extra-Dosed Cable-Stayed Bridge

2014 ◽  
Vol 580-583 ◽  
pp. 3154-3157
Author(s):  
Xing Zhou Chen
Keyword(s):  
Prestressed Concrete ◽  
High Speed ◽  
Element Model ◽  
Internal Force ◽  
Bridge Structure ◽  
Cross Sectional ◽  
Cable Stayed Bridge ◽  
Rigid Frame ◽  
Internal Forces ◽  
Design Speed

The Extra-dosed cable-stayed bridge is considered as a new popular type of bridge structure in recent 20 years, whose mechanical properties and economic span both lie between continuous beam (or rigid frame ) bridges and cable-stayed bridges. This design is a double-cable-plane (85+150+85) m prestressed concrete Extra-dosed cable-stayed bridge, whose maximum Design speed is 100km/h and its width is 25.50m. The form of the highway is sextuple line which is 10.75m far away,and the cross-sectional slope is 2%. The girder body adopts three cell and single box, the height of beam takes quadratic parabola relation, which is 5m high at the middle support, while at the side support and the midspan is 3m. Vehicle standard load was applied on the bridge. The design uses Midas/Civil to establish the finite element model that is reasonable and simple, analyzing the structure behavior of the girder body under loading, especially the internal forces of bridge structure under dead load, live load and additional force.

Analysis and Design of Circular Prestressed Concrete Storage Tanks

PCI Journal ◽  
1985 ◽  
Vol 30 (4) ◽  
pp. 64-85 ◽  
Author(s):  
M. J. N. Priestley
Keyword(s):  
Prestressed Concrete ◽  
Storage Tanks ◽  
Analysis And Design

Analysis and Design of Partially Prestressed Concrete Bridges Under Thermal Loading

PCI Journal ◽  
1984 ◽  
Vol 29 (3) ◽  
pp. 94-115 ◽  
Author(s):  
N. Cooke ◽  
M. J. N. Priestley ◽  
S. J. Thurston
Keyword(s):  
Prestressed Concrete ◽  
Thermal Loading ◽  
Concrete Bridges ◽  
Analysis And Design ◽  
Prestressed Concrete Bridges

Parameters analysis and design of transverse connection strengthening prestressed concrete T‐girder bridge

2021 ◽  
Author(s):  
Chen Chen ◽  
Caiqian Yang ◽  
Yong Pan ◽  
Honglei Zhang ◽  
Hans De Backer
Keyword(s):  
Prestressed Concrete ◽  
Analysis And Design ◽  
Parameters Analysis ◽  
Girder Bridge

scholarly journals Smart Sensing of PSC Girders Using a PC Strand with a Built-in Optical Fiber Sensor

2021 ◽  
Vol 11 (1) ◽  
pp. 359
Author(s):  
Sung Tae Kim ◽  
Hyejin Yoon ◽  
Young-Hwan Park ◽  
Seung-Seop Jin ◽  
Soobong Shin ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Prestressed Concrete ◽  
Steel Wire ◽  
Optical Fiber Sensor ◽  
Fiber Reinforced Polymer ◽  
Bridge Structure ◽  
Fbg Sensor ◽  
Prestressing Force ◽  
Reinforced Polymer ◽  
Loading Tests

This paper presents a multi-functional strand capable of introducing prestressing force in prestressed concrete (PSC) girders and sensing their static and dynamic behavior as well. This innovative strand is developed by replacing the core steel wire of the strand used in PSC structures with a carbon fiber-reinforced polymer (CFRP) wire with a built-in optical Fiber Bragg Grating (FBG) sensor. A full-scale girder specimen was fabricated by applying this multi-function strand to check the possibility of tracking the change of prestressing force at each construction stage. Moreover, dynamic data could be secured during dynamic loading tests without installing accelerometers and made it possible to obtain the natural frequencies of the structure. The results verified the capability to effectively manage the prestressing force in the PSC bridge structure by applying the PC strand with a built-in optical sensor known for its outstanding practicability and durability.

scholarly journals Effect of Modelling Inhomogeneous Wave Conditions on Structural Responses of a Very Long Floating Bridge

2021 ◽  
Vol 9 (5) ◽  
pp. 548
Author(s):  
Jian Dai ◽  
Christos Stefanakos ◽  
Bernt J. Leira ◽  
Hagbart Skage Alsos
Keyword(s):  
Water Environment ◽  
Bridge Structure ◽  
Inhomogeneous Wave ◽  
Wave Condition ◽  
Analysis And Design ◽  
Inhomogeneous Waves ◽  
Modelling Analysis ◽  
Structural Responses ◽  
Floating Bridge ◽  
Wave Conditions

Floating bridges are suitable for connecting land parcels separated by wide and deep waterbodies. However, when the span of the crossing becomes very long, the water environment exhibits inhomogeneities which introduce difficulties to the modelling, analysis and design of the bridge structure. The wave inhomogeneity may be described by means of field measurement and/or numerical simulations. Both approaches face complications when the resolution is much refined. It is thus important to examine the effect of the resolution related to the modelling of inhomogeneous waves on the global structural responses. In this study, a hypothetical crossing at the Sulafjord is chosen, and the wave environment in the year 2015 at 10 positions along the crossing is numerically computed. Next, different inhomogeneous wave conditions are established based on the wave data at 3, 5, and 10 positions, respectively. Time-domain simulations are conducted to examine the effect of different modelling approaches of the inhomogeneous wave condition on the global responses of a long, straight and side-anchored floating bridge.

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