Special-Design Precast Concrete Beams for Sidney Lanier Bridge Replacement Project

2000 ◽  
Vol 1696 (1) ◽  
pp. 48-51
Author(s):  
Edwin Callicutt
Keyword(s):  
Concrete Beams ◽  
Precast Concrete ◽  
Drilled Shafts ◽  
Bridge Piers ◽  
Mass Concrete ◽  
Department Of Transportation ◽  
Special Design ◽  
Construction Methods ◽  
Bentonite Slurry ◽  
Type V

The Sidney Lanier Bridge Replacement Project is a $100 million undertaking in Brunswick, Georgia, that will lead to the replacement of an existing 40-year-old steel lift-span structure. The approach bridges that lead to the project’s main-span unit consist of 16 spans of 54.9-m (180-ft), special-design, precast concrete beams as well as 14 spans of 36.6-m (120-ft) Type V AASHTO girders. The special-design beams are 2.3 m (7.5 ft) deep, are erected as simply supported members and are then made into two-span continuous units by longitudinal posttensioning, and are rigidly connected transversely with cast-in-place diaphragms. The riding surface is a cast-in-place concrete deck constructed on stay-in-place metal forms. The 54.9-m (180-ft) beams, supported by hollow tapered concrete piers with hammerhead caps, are founded on 1.2-m (48-in.) drilled shafts. Wet-hole construction methods with bentonite slurry were required for the drilled shafts. The bridge piers are over land and water, and large cofferdams were required to facilitate construction. Additionally, the sizes of the cast-in-place footings and hammerhead pier caps required mass concrete thermal considerations. The approach bridges lead to the main-span portion of the project, which will be a 762-m (2,500-ft) concrete, cable-stayed unit with a 381-m (1,250-ft) center span. The design, casting, and erection of these beams, and construction of the substructure, posed many challenges to the Georgia Department of Transportation designers and contractors. These beams are among the longest erected in Georgia.

Prefabricated Bridge Elements and Systems in Japan and Europe

2005 ◽  
Vol 1928 (1) ◽  
pp. 102-109 ◽  
Author(s):  
Henry G. Russell ◽  
Mary Lou Ralls ◽  
Benjamin M. Tang
Keyword(s):  
Precast Concrete ◽  
Work Zone ◽  
Bridge Piers ◽  
Life Cycle Costs ◽  
Structural Elements ◽  
Concrete Panels ◽  
Work Zone Safety ◽  
Construction Methods ◽  
Short Time ◽  
Concrete Deck

In April 2004, a scanning tour of Japan, the Netherlands, Belgium, Germany, and France was made to obtain information about bridge construction methods being used to minimize traffic disruption, improve work zone safety, minimize environmental impact, improve constructibility, increase quality, and lower life-cycle costs. From information obtained from the tour, 10 technologies were identified for further consideration and possible implementation into U.S. practices. These included two technologies that allow bridges to be built off site and then moved to their final location in a short time, three superstructure systems and four deck systems that facilitate faster and safer construction, and one substructure system. The two technologies for moving bridges were self-propelled modular transporters and other moving systems, including skidding or sliding, incremental launching, floating, rotating, and lifting of bridges into place. The superstructure systems included a precast concrete deck system known as the Poutre Dalle system, the use of partial-depth concrete decks prefabricated on steel or concrete beams, and U-shaped precast concrete segments with transverse ribs. The deck systems involved full-depth prefabricated concrete decks, special cast-in-place closure joint details, hybrid steel–concrete deck systems, and a multiple-level corrosion protection system. The substructure system consisted of stay-in-place precast concrete panels that serve as both formwork and structural elements for solid and hollow bridge piers.

scholarly journals Pengaruh Ikatan Diagonal GFRP Pada Hubungan Balok Kolom Pracetak Terhadap Kekuatan Sambungan

2021 ◽  
pp. 9-14
Author(s):  
T. Hilmansyah ◽  
H. Parung ◽  
R. Djamaluddin
Keyword(s):  
Static Load ◽  
Concrete Beams ◽  
Precast Concrete ◽  
Fiber Reinforced Polymer ◽  
Glass Fiber Reinforced Polymer ◽  
Engineering Structures ◽  
Construction Methods ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Column Joint

Precast system is one of the reinforced concrete construction methods that can be used for development. GFRP-S (Glass Fiber Reinforced Polymer Sheet) is one of material that can be used as materials in precast concrete connections. The research aimed at analysing the strenght and behaviour of the concrete beams on beam-column joint precast with GFRP-S.The research was conducted at the Laboratory of Civil Engineering Structures  and Materials Hasanuddin University. Beams dimensions was 15cm x 20cm x 120cm and the column was 45cm x 20cm x 100cm. The testing materials were the precast beams with GFRP-S. The imposition given is monotonic static load in one direction.The results showed that an increase in stiffness of the precast beams with GFRP-S. LSI amounted to 16.64% of the LS. LIS amounted to 31.70% of the LS. The average deflection of LS are 55.05 mm. The average deflection of LSI are 45.89 mm. The average deflection of LIS are 37.60 mm. The models of failure in the precast beams with GFRP-S are rupture failure of GFRP-S.

Performance evaluation of precast concrete beams reinforced with multifunctional graphite nanomaterials

PCI Journal ◽  
2016 ◽  
Vol 61 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Amirpasha Peyvandi ◽  
Iman Harsini ◽  
Libya Ahmed Sbia ◽  
Ranjith Weerasiri Rankothge ◽  
Saqib Ul Abideen ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Concrete Beams ◽  
Precast Concrete

Precast Concrete Segmental Bridge Piers under Ship Impact

2016 ◽  
Vol 106 (6) ◽  
pp. 683-690 ◽  
Author(s):  
Hai FANG ◽  
Lu ZHU ◽  
Francis T.K AU
Keyword(s):  
Precast Concrete ◽  
Bridge Piers ◽  
Segmental Bridge

Establishing and Satisfying Thermal Requirements for Drilled Shaft Concrete Based on Durability Considerations

2021 ◽  
pp. 036119812199635
Author(s):  
Andrew Z. Boeckmann ◽  
Zakaria El-tayash ◽  
J. Erik Loehr
Keyword(s):  
Mechanical Response ◽  
Large Diameter ◽  
Thermal Cracking ◽  
Drilled Shafts ◽  
Maximum Temperature ◽  
Design Parameters ◽  
Mass Concrete ◽  
Temperature Differential ◽  
Thermal Requirements ◽  
Ettringite Formation

Some U.S. transportation agencies have recently applied mass concrete provisions to drilled shafts, imposing limits on maximum temperatures and maximum temperature differentials. On one hand, temperatures commonly observed in large-diameter drilled shafts have been observed to cause delayed ettringite formation (DEF) and thermal cracking in above-ground concrete elements. On the other, the reinforcement and confinement unique to drilled shafts should provide resistance to thermal cracking, and the provisions that have been applied are based on dated practices for above-ground concrete. This paper establishes a rational procedure for design of drilled shafts for durability requirements in response to hydration temperatures, which addresses both DEF and thermal cracking. DEF is addressed through maximum temperature differential limitations that are based on concrete mix design parameters. Thermal cracking is addressed through calculations that explicitly consider the thermo-mechanical response of concrete for predicted temperatures. Results from application of the procedure indicate consideration of DEF and thermal cracking potential for drilled shafts is prudent, but provisions that have been applied to date are overly restrictive in many circumstances, particularly the commonly adopted 35°F maximum temperature differential provision.

Influence of Thermal Sweep on Girder Stability during Construction

2018 ◽  
Vol 2672 (41) ◽  
pp. 44-55
Author(s):  
Jeffrey M. Honig ◽  
Zachary S. Harper ◽  
Gary R. Consolazio
Keyword(s):  
Prestressed Concrete ◽  
Precast Concrete ◽  
Solar Heating ◽  
Bridge Girders ◽  
Concrete Bridge ◽  
Design Standards ◽  
Element Analysis ◽  
Modeling And Analysis ◽  
Fabrication Tolerances ◽  
Type V

During construction, girder stability of precast, prestressed concrete bridge girders is adversely affected by fabrication imperfections. Consequently, limits on lateral sweep imperfection caused by fabrication tolerances are imposed by design standards, thus reducing the possibility of girder instability and rollover. However, thermal sweep, induced by solar heating during early stages of construction, can add to pre-existing fabrication tolerances thereby amplifying girder imperfections and reducing stability. In the present study, lateral thermal gradients available in the literature were adopted and enhanced for purposes of computing thermal girder sweep. A variety of girder types—PCI BT-63, Florida-I Beams, and AASHTO Type-V—were then investigated to quantify the influence that lateral thermal sweep has on the stability of individual precast concrete bridge girders under lateral wind load. Previously validated finite element analysis modeling and analysis techniques were used to conduct a parametric study that included 10 girder types, varying span lengths, and five geographic locations. Results revealed that thermal sweep may cause wind carrying capacity reductions of the order of 30 to 60% for typical span lengths, and even greater reductions at span lengths that approach maximum design limits. Consequently, it is crucial that thermal sweep, caused by environmental solar-heating conditions, be considered in construction-stage girder stability analyses.

Adjustment for Temperature and Deformation of Concrete Beams

2005 ◽  
Vol 297-300 ◽  
pp. 2667-2674
Author(s):  
Si Rong Zhu ◽  
Zhuo Qiu Li ◽  
Xian Hui Song
Keyword(s):  
Life Span ◽  
Temperature Difference ◽  
Thermal Effects ◽  
Thermal Stresses ◽  
Concrete Beams ◽  
Mass Concrete ◽  
The Sun ◽  
Freeze Thaw ◽  
Thaw Cycle ◽  
Freeze Thaw Cycle

Cement structures such as bridges and dams often come into being distortion or exhibit excessive thermal stresses due to the sun radiation or freeze-thaw cycle. Therefore, temperature especially inner temperature difference or deformation of structures must be controlled or regulated sometimes in order to reduce thermal stresses or excessive deformation and to extend the life-span of structures. In this paper, the electro-thermal effects of smart cement are used to adjust temperature difference or deformation of concrete beams without the need of peripheral non-structural materials. Concrete beams for temperature and deformation adjustment were fabricated, and some experimental results as well as the related conclusions about temperature difference and deformation were produced. Based on these results, experiments of temperature difference or deflection adjustment are further conducted successfully. The research results in this paper are the bases of temperature and deformation adjustment for mass concrete structures. A new path will be broken to adjust temperature or deformation easily for some structures.

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