000018854 001__ 18854
000018854 005__ 20170118182244.0
000018854 04107 $$aeng
000018854 046__ $$k2017-01-09
000018854 100__ $$aGalvis, Francisco
000018854 24500 $$aCharacterization of the Seismic Behavior of a Column-Foundation Connection for Accelerated Bridge Construction

000018854 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018854 260__ $$b
000018854 506__ $$arestricted
000018854 520__ $$2eng$$aConnections between prefabricated elements are crucial to ensure adequate behavior of structures, especially if these are located on intermediate or high seismic hazard regions and the structural system redundancy is low, as is the case of bridges and wharfs. Due to this reason, prefabrication is usual on bridge elements that will behave within the linear elastic range of response. However, some research in the last decade aims to extend prefabrication to energy dissipating elements such as bridge columns. These developments are highly influenced by the construction practice of each region, making them difficult to adapt in places other than those where they were conceived. This paper presents the development of a prefabricated emulative energy dissipating column-to-foundation connection. To begin, a conceptual comparative evaluation of the main types of ductile connections use worldwide is presented. According to this review, it was possible to identify that the Grouted Duct Connection has a great potential to be improved for worldwide applications and it has a particular suitability for implementation in Latin American countries. This connection requires the main longitudinal reinforcement of the columns to be projected to fit inside ducts embedded in the foundation that are then filled with no-shrink grout. A successful application of this connection has to provide enough construction tolerances for the elements to fit. Therefore, large diameter bars (No. 14 to No. 18) are currently preferred as longitudinal column reinforcement. Nonetheless, large diameter bars need equally large straight anchorage length that often controls the size of the foundation, making it hard to build, handle and transport. Moreover, reinforcing bars with diameters greater than No. 10 are not available in some regions of the globe such as a few Latin American countries. Due to these problems, this investigation develops a new alternative for column to foundation connection that use galvanized steel ducts to hold bundled bars instead of individual bars, ensuring feasible construction tolerance as well as reducing size and weight of the foundation. To assess the behavior of the proposed connections, a series of monotonic pullout tests were conducted on single-, two- and three- No. 8 bar bundles for different embedded lengths. These tests allowed proving that for the typical foundation dimensions, the proposed procedure adequately developed bundled reinforcement.

000018854 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018854 653__ $$aAccelerated Bridge Construction, Bundled bars, prefabricated bridge columns, grouted duct connections.

000018854 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018854 720__ $$aGalvis, Francisco$$iCorreal, Juan Francisco
000018854 8560_ $$ffischerc@itam.cas.cz
000018854 8564_ $$s725981$$uhttps://invenio.itam.cas.cz/record/18854/files/2351.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2351.
000018854 962__ $$r16048
000018854 980__ $$aPAPER