Shear connection between precast concrete bridge segments built with thin-walled elements

Abstract

<p>Segmental bridge construction combines the advantages of prefabrication, for example the reduction of construction time and very high product quality, with those of common bridge erecting methods. Short precast segments are assembled and prestressed to form the complete superstructure. New methods divide these segments into prefabricated elements to create new lighter versions of the segments. For this to work, new joint types must be developed which can ensure the force transfer between the segments. In this paper, several methods, including a new concept for joining thin-walled pre-fabricated elements, are described. Push-off tests with a constant lateral force were carried out to assess the shear strength and deformation behaviour. The main parameters were the joint type (wet joints: plain, grooved, keyed; dry joints), the mortar type, and the level of lateral force. In this paper, the test results are presented and recalculations with a design code are shown.</p>

Semi-Precast Segmental Bridge Construction Method: Experimental Investigation on the Shear Transfer in Longitudinal and Transverse Direction

“…In this paper, the shear transfer by post-tensioned grouted joints is investigated based on data reported in [21]. In the course of the research, a series of push-off tests with a constant lateral force was conducted to assess the shear strength and deformation behaviour.…”

“…F 0.2 at shear deformation of s = 0.2 mm is chosen for F max . 1 experimental data of column F max also in[21]. 2 τ max = F max /A with A = 14,000 mm 2 .…”