Anchor tension plate type anchoring structure cable and tensioning construction method thereof

Abstract

An anchor tension plate type anchoring structure cable comprises an anchor tension plate with a counter-force structure, a cable anchorage device, an anchoring nut and a tensioning mechanism. The anchor tension plate comprises a bridge deck, anchor tension plate main plates, an anchor backing plate, steel ducts and an anchor tension plate upper sealing plate. The anchor tension plate main plates are symmetrically fixed on the bridge deck to form an invert "V" shape, the steel ducts are positioned between the two anchor tension plate main plates to fixedly connect the two anchor tension plate main plates into a whole, and the anchor tension plate upper sealing plate is positioned at the middles or the tops of the anchor tension plate main plates; the anchor backing plate is fixed at the bottoms of the steel ducts, and the steel ducts protrude out of the anchor tension plate upper sealing plate; the counter-force structure is a counter-force structure lug plate located on the upper partsof the anchor tension plate main plates or an integral counter-force step structure arranged on the steel ducts of the anchor tension plate. In the installation state, the bridge deck at the lower end of the anchor tension plate is fixed on a deck, and the lower end of the cable penetrates into the steel ducts of the anchor tension plate; the tensioning mechanism is installed on the counter-forcestructure arranged on the upper part of the anchor tension plate. By using the structure cable and the tensioning construction method, the tensioning construction of the cable can be carried out on the deck.

Description

Technical field [0001] The invention relates to a bridge cable and a construction method thereof, in particular to an anchor pull plate type anchor structure cable and a tension construction method thereof. Background technique [0002] The connection method of the bridge cable and the stiffening beam can generally adopt the anchor head pressure type (such as Figure 17 Shown) or pin-connected (such as Figure 18-1~Figure 18-2 (Shown), when the conventional anchor head pressure-bearing anchoring is at the bottom of the stiffening beam, a special hanging basket-type tension platform needs to be made, and the tensioning platform is installed under the beam; and when the anchor is anchored in the middle of the steel box beam, in the design of the box beam It is necessary to reserve enough space for tensioning, so the box girder structure is easily weakened, and the tensioning operation in a narrow space is very inconvenient; the pin connection type uses a pin to connect the lower end ...

AI Technical Summary

Problems solved by technology

[0002] The connection method between the bridge stay cable and the stiffened beam can generally adopt the anchor head pressure-bearing type (such as Figure 17 shown) or pin-on (as Figure 18-1~Figure 18-2 As shown), when the conventional anchor head is anchored at the bottom of the stiffened beam under pressure, it is necessary to make a special hanging basket-type tension platform and install tension under the beam; while when anchoring in the middle of the steel box girder, the design of the box girder It is necessary to reserve enough space for tensioning, so the structure of the box girder is easily weakened, and it is very inconvenient to operate the tensioning in a narrow space; Connection, the general pin-connected cable structure cannot be used for tension adjustment. If tension adjustment is required, an adjustment device must be added between the fork lug and the anchorage, and a tension reaction force structure needs to be installed at both ends of the adjustment device.

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