Static structures (e.g. – buildings) – With component having discrete prestressing means – Beam – girder – or truss construction
Patent
1986-09-05
1988-09-27
Ridgill, Jr., James L.
Static structures (e.g., buildings)
With component having discrete prestressing means
Beam, girder, or truss construction
52230, E04C 512
Patent
active
047731982
ABSTRACT:
Tendon anchorages for aggressive environments. Tendon anchors according to the present invention include forward and rear connection means for fluid-resistant connection to adjacent members to protect the tendon strand from corrosive elements. A fixed anchorage according to the present invention includes a connector connected to the anchor plate rear connection means and the strand sheath in a fluid-resistant relationship and a cap threaded onto the anchor plate forward connection means to form a fluid-resistant connection after the strand has been tensioned. An intermediate anchorage according to the present invention replaces the cap with an adaptor which is threaded onto the anchor plate front connection means. The adaptor not only secures the anchor plate to the structure formed druing pouring of the structure, but also forms a fluid-resistant connection with a second connector which in turn forms a fluid-resistant connection with the strand sheath. The invention further includes a mount for securing an anchor plate to a structure form for forming a fixed anchorage. The mount includes a spindle with a nose piece which cooperates with the wedge-gripper cavity of the anchor plate to prevent the wedge-gripper cavity from becoming occluded with concrete or other foreign material during pouring of the structure.
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Continental Concrete Structures, Inc.
Ridgill, Jr. James L.
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