Structural behavior of cable anchorage zones in prestressed concrete cable-stayed bridge

Abstract

Since the cable anchorage zone in a prestressed concrete cable-stayed bridge is subjected to a large amount of concentrated tendon force, it shows very complicated stress distributions which can cause serious local cracks. Accordingly, it is necessary to investigate the parameters affecting the stress distribution, such as the cable inclination, the position of the anchor plate, the modeling method, and three-dimensional effects. The tensile stress distribution in the anchorage zone is compared to the actual design condition by varing the stiffness of spring elements in the local modeling, and an appropriate position for the anchor plate is determined. The results provide elementary data for the stress state in the anchorage zones and encourage more efficient designs.Key words: finite element analysis, bursting stress, spalling stress, cable anchorage zone, cable-stayed bridge.

An Analytical Effect of Realistic Anchorage Systems on Bursting Force

“…2(b) The variation of stresses along transverse directions is plotted and integrated (tensile stresses only) to determine the level of the bursting force. This method of force calculation is demonstrated by stone [17] and is used by many researchers [1,2,18] in their study for further use. 3.…”

“…In the areas surrounding the unbounded corners of the beam, commonly referred to as the spalling zone, tensile stresses also develop. Numerous scholars have investigated the anchorage zone using various techniques such as nite element methods [2,3], experimental methods [4,5], and analytical methods [ 6 7]. Substantial research on stress distribution in the anchorage zone has been conducted by individuals such as Guyon [8], Iyengar [6], Zelinski, and Rowe [4], among others.…”

Behavior of monostrand anchors in unbonded post tension flat slab system

“…Local zone is that located directly in front on the bearing side of the anchorage device. In several cases, general and local zones may be handled separately [ 10 ].…”

Spatial Stress Analysis on Anchorage Zone of Cable-Stayed Bridge Tower

“…Some research related to anchorage zone of cable-stayed tower has been done [1,3] , but most towers of study are arranged with circumferential tendons, and "one-way prestress tendons" has not been referred. In consideration of the importance of anchorage zone, an elaborate space stress analysis of this new design is necessary.…”