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Tensioning and anchoring device suitable for retard-bonded prestressed steel strand
A tensioning and anchoring device suitable for a retard-bonded prestressed steel strand comprises an embedded anchorage device, an under-anchor spiral rib and a matched jack, and the embedded tensioning end anchorage device and the under-anchor spiral rib sequentially penetrate through the retard-bonded prestressed steel strand and are embedded in a concrete structure. The tensioning end of the retard-bonded prestressed steel strand is connected with a matched jack; the device further comprises an angle-adjustable tensioning auxiliary device located between the concrete structure and the matched jack. The device can be used in various concrete members built and reinforced by adopting retard-bonded prestressed steel strands, is simple in structure, low in cost and convenient to construct, is suitable for the situation that the outer surface of the structure is not perpendicular to the prestressed steel strands, avoids arranging an external anchor groove in the concrete structure, and the shallow tensioning grooves are only formed in the range of the concrete protection layer outside the steel bars, so that the continuity of the longitudinal main bars and the circumferential stirrupsof the structure is guaranteed, and structural stress is facilitated.
一种适用于缓粘结预应力钢绞线的张拉锚固装置，包括内埋式锚具、锚下螺旋筋和配套千斤顶，内埋式张拉端锚具及锚下螺旋筋依次穿在所述缓粘结预应力钢绞线上，并埋置于混凝土结构中，所述缓粘结预应力钢绞线的张拉端连接配套千斤顶；还包括可调角度的张拉辅助装置，位于混凝土结构与配套千斤顶之间。本发明创造可用于各类采用缓粘结预应力钢绞线建造和加固的混凝土构件中，且构造简单、成本低、施工方便，同时适用于结构外表面与预应力钢绞线不垂直的情形，避免了对混凝土结构设置外部锚槽，仅在钢筋外部混凝土保护层范围设置较浅的张拉槽，保证了结构纵向主筋与环向箍筋的连续性，有利于结构受力。
Tensioning and anchoring device suitable for retard-bonded prestressed steel strand
A tensioning and anchoring device suitable for a retard-bonded prestressed steel strand comprises an embedded anchorage device, an under-anchor spiral rib and a matched jack, and the embedded tensioning end anchorage device and the under-anchor spiral rib sequentially penetrate through the retard-bonded prestressed steel strand and are embedded in a concrete structure. The tensioning end of the retard-bonded prestressed steel strand is connected with a matched jack; the device further comprises an angle-adjustable tensioning auxiliary device located between the concrete structure and the matched jack. The device can be used in various concrete members built and reinforced by adopting retard-bonded prestressed steel strands, is simple in structure, low in cost and convenient to construct, is suitable for the situation that the outer surface of the structure is not perpendicular to the prestressed steel strands, avoids arranging an external anchor groove in the concrete structure, and the shallow tensioning grooves are only formed in the range of the concrete protection layer outside the steel bars, so that the continuity of the longitudinal main bars and the circumferential stirrupsof the structure is guaranteed, and structural stress is facilitated.
一种适用于缓粘结预应力钢绞线的张拉锚固装置，包括内埋式锚具、锚下螺旋筋和配套千斤顶，内埋式张拉端锚具及锚下螺旋筋依次穿在所述缓粘结预应力钢绞线上，并埋置于混凝土结构中，所述缓粘结预应力钢绞线的张拉端连接配套千斤顶；还包括可调角度的张拉辅助装置，位于混凝土结构与配套千斤顶之间。本发明创造可用于各类采用缓粘结预应力钢绞线建造和加固的混凝土构件中，且构造简单、成本低、施工方便，同时适用于结构外表面与预应力钢绞线不垂直的情形，避免了对混凝土结构设置外部锚槽，仅在钢筋外部混凝土保护层范围设置较浅的张拉槽，保证了结构纵向主筋与环向箍筋的连续性，有利于结构受力。
Tensioning and anchoring device suitable for retard-bonded prestressed steel strand
一种适用于缓粘结预应力钢绞线的张拉锚固装置
SU WEI (author) / MOU ZHAOXIANG (author) / LI ENLIANG (author) / ZHOU YUEWU (author)
2021-02-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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