Emulative Column-Footing Connections for Seismic Design in Accelerated Bridge Construction

Abstract

Accelerated bridge construction (ABC) is gaining substantial momentum in the US because of its many advantages. Extensive use of precast members is necessary for ABC to succeed. Some of the key advantages of ABC are: (1) higher quality of construction for structural elements because of fabrication in plants, (2) more durable materials because of more appropriate curing in plants, (3) concurrent execution of different tasks, (4) reduced traffic interruption and less risk to the traveling public and construction crew, and (5) reduced direct and indirect effect on the environment due to expedited construction and the use of more efficient technologies that require less energy. Despite their numerous advantages prefabricated columns have rarely been used in areas of high seismicity because of high uncertainty about their seismic performance.

Experimental evaluation of coupler behavior for mechanical rebar splices in reinforced concrete structures

“…These studies are taken as references in the Brazilian technical literature and supported the recently published revision of ABNT NBR 9062 [25]. With regard to international references, this type of study was conducted by Ordoñez et al [26], Cheok and Lew [27], Haber et al [28] and Yu et al [29]. When the various studies on the behavior of steel coupler mechanical splices in reinforced concrete structures are put into context, a lack of national publications on the subject is noted, both with regard to the individual performance evaluation of these mechanical splices and the evaluation of these splices together with reinforced concrete structural elements.…”

Layered composite entangled wire materials blocks as pre-tensioned vertebral rocking columns

“…Therefore, in the past two decades, many studies have been conducted to develop precast structural systems that are seismically resilient. The precast structural systems are constructed using more durable materials, and can be used in accelerated bridge construction (ABC) ( [15], [16], [17], [18]).…”

Strength, durability, and application of grouted couplers for integral abutments in accelerated bridge construction projects

“…The use of grouted couplers has increased as the need and demand for ABC projects has increased [5]. The ability of grouted couplers to splice rebar between precast elements to simulate cast-in-place construction has made them a popular choice for bridge designers.…”