Abstract
This paper investigates experimentally the deformation characteristics of the mono strand anchor head used in prestressed concrete bridge. Since the strains measurable in the anchor head are the axial and hoop strains, the deformation characteristics of the anchor head are examined by measuring these strains at various positions and according to the jacking force exerted on the pre-stressing strand. Moreover, the possibility to estimate the jacking force acting in the tendon based upon the measured strains and the corresponding error are evaluated.
Highlights
Even if diverse types of bridge were developed and applied, the most preferred bridge remains the concrete bridge among which the prestressed concrete bridge represents the majority
Since the strains measurable in the anchor head are the axial and hoop strains, the deformation characteristics of the anchor head are examined through tests measuring these strains at various positions and according to the jacking force exerted on the prestressing strand
This study examined experimentally the deformation characteristics of the mono tendon anchor head
Summary
Even if diverse types of bridge were developed and applied, the most preferred bridge remains the concrete bridge among which the prestressed concrete bridge represents the majority. The prestressed concrete structure makes use of tendons to supplement compressive force so as to enhance significantly the performance of the concrete structure. Prestressed concrete structures can be subdivided into pre-tensioning systems and post-tensioning systems In both systems, the strands are individually gripped in an anchor head unit including a wedge and transmit their prestressing force by means of an anchor plate. This paper intends to investigate experimentally the deformation characteristics of the mono strand anchor head used in prestressed concrete bridge. Since the strains measurable in the anchor head are the axial and hoop strains, the deformation characteristics of the anchor head are examined through tests measuring these strains at various positions and according to the jacking force exerted on the prestressing strand. The possibility to estimate the jacking force acting in the tendon based upon the measured strains and the corresponding error are evaluated
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