Unbonded prestressed tendon controllable segmental anchorage device and its assembly method and application
A kind of prestressed tendon, non-bonding technology, applied in construction, building structure, processing of building materials, etc., can solve the problem of segmentation problem that has not been well solved, and achieve convenient and fast construction, strong adaptability, Maintenance-friendly effect
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Embodiment 1
[0054] In the two-span continuous prestressed beam, the controllable segmental anchorage is installed in the node core area on the center column (see Figure 4 ), tension the cable so that it is in a non-working state, after passing through the prestressed tendons, pour the beam concrete, tension the prestress at both ends and anchor, release the cable to make the controllable segmental anchors in a working state. Realize the segmentation purpose of its two-span prestressed beam.
Embodiment 2
[0056] In the three-span continuous prestressed beam, one controllable segmental anchor is installed in the node core area on the center column (see Figure 5 ), tension the cable so that it is in a non-working state, after passing through the prestressed tendon, pouring concrete for the beam, 1) after tensioning the prestress at the left end and anchoring, loosen the cable to make the controllable segmental anchor in a working state, Then stretch the prestressed and anchored right end to achieve the purpose of segmenting the three-span prestressed beam. 2) After the left end and right end are prestressed and anchored, the stay cables are released to put the controllable segmental anchorage in working condition, realizing the segmental purpose of the three-span prestressed beam.
Embodiment 3
[0058] In the three-span continuous prestressed beam, two controllable segmental anchors are respectively installed in the node core area on the left and right central columns (see Figure 6 ), tension the cables so that both of them are in a non-working state, after passing through the prestressed tendons and pouring the beam concrete, 1) after tensioning the left end prestress and anchoring, loosen the cables to make the left segmental anchors controllable In the working state, the right end prestress is stretched and anchored, and the cable is released to make the right controllable segmental anchorage in the working state, so as to realize the segmental purpose of the three-span prestressed beam. 2) After the left end and right end are prestressed and anchored, the stay cables are released to keep the two controllable segmental anchors in working condition, realizing the segmental purpose of the three-span prestressed beam.
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