Prestressed Anchorage

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low retraction anchor

Low-retraction Stressing Anchorage

Model: DHM15-N (N is the number of anchor ring holes)

Number of holes: 1 to 5 holes

Composition: anchor head, anchor nut, wedges, bearing plate, spiral reinforcement.

Low-retraction stressing anchorage is a kind of low-retraction and high-efficiency prestressed anchorage that eliminates the loss of prestressed tendon tension through secondary tension and tightening the nut so that the retraction of the entire anchors is controlled within 1mm. This anchorage effectively solves the problems of the traditional anchoring process in that the main tensile stress exceeds the limit by the specification, which is easy to cause cracks, the effective permanent prestress loss of the prestressed tendons, and the low utilization of the prestressed tendons.

It is widely used in long-span continuous beams, continuous steel bridges and other vertical prestressed structures, railway girder transverse prestressed structures, cable-stayed bridge tower body circumferential and transverse prestressed structures, slope anchored prestressed structures, and other shorter prestressed tendon structures.

Specification of Low-retraction Stressing Anchorage

drawing of low retraction stressing anchorage
Model Bearing Plate Duct Anchor Head Anchor Nut Spiral Reinforcement
□AxB ΦD D1 L1 ΦD2 L2 ΦG ΦH 1 N
DHM15-1 M43x2 45 62 35 80 6.5 30 4
DHM15-2 145×120 45 M83x3 50 108 35 140 10 50 4
DHM15-3 145×120 50 M83x3 50 108 35 140 10 50 4
DHM15-4 160×130 55 M93x3 55 118 35 150 10 50 4
DHM15-5 180×150 55 M113x3 55 138 35 70 12 50 4
DHM15-6 195×160 70 M126x3 55 155 35 190 12 50 4
DHM15-7 195×160 70 M126x3 55 155 35 190 12 50 4
DHM15-8 208×160 80 M136x3 60 165 35 200 12 50 4
DHM15-9 220×180 80 M146x3 60 175 35 205 14 60 4

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