RU2715495C1 - Anchor device - Google Patents

Abstract

FIELD: bridge engineering.

SUBSTANCE: invention relates to bridge engineering and can be used for attachment to a support of an anchor span at mounted mounting of span structures with through frames. Anchor device includes suspensions pivotally attached to jack beam and bridge support. Anchor device is equipped with anchor structure, which is concreted into support of bridge and balancing beams, which are located above and across jacking beam of anchor span and rest on it by means of standard tangential bearing parts. Suspensions are made as articulated by height from metal bands and lugs on high-strength bolts and are attached to balancing beams and support by means of hinge joints on plug-in cylindrical axes.

EFFECT: disclosed is anchor device.

1 cl, 3 dwg

Description

The invention relates to bridge construction and can be used for mounting on the support of the anchor span during the hinged assembly of spans with through trusses.

Known anchor device, including suspension, articulated attached to the jack beam and the bridge support / 1 /.

The disadvantage of this anchor device is its low bearing capacity for the perception of vertical loads (suitable only for anchoring spans up to 60 m for seismic effects) and the fact that it does not provide free temperature and angular displacements of the end face of the anchor span without changing the vertical position of the fixed end.

The objective of the present invention is the perception by the anchor device of tearing loads of up to 1800 kN (on one plane of the trusses) with the possibility of the necessary temperature displacements and the angle of rotation of the end face of the anchor span when assembling the bulk of the adjacent span with a significantly larger span and mass than the anchor.

The problem is solved due to the fact that the anchor device, which includes pendants pivotally attached to the jack beam and the bridge support, is equipped with an anchor structure, concreted in the body of the bridge support, and balancing beams, which are located above and across the jack beam of the anchor span and are supported by it by means of tangential supporting parts, and the pendants are made articulated in height from metal bands and eyes on high-strength bolts and attached to the balancing beams and to the anchor to Bridge support structures using articulated joints on inserted cylindrical axes.

The invention is illustrated in the drawing, where:

- FIG. 1 shows an anchor device, facade;

- FIG. 2 shows FIG. 1, view along AA;

- FIG. 3 shows a plug-in cylindrical axis.

The jack beam 1 of the anchor span during the hinged assembly of the span is mounted on the support of the bridge 2 using an anchor device that provides the necessary longitudinal temperature and angular displacements of the anchor span (not shown in the drawing).

An anchor device consists of two balancing beams 3, which are located above and across the jack beam 1 and are supported on it by means of tangential support parts 4. The anchor device also contains pendants 5, consisting of metal bands 6 and eyes 7, articulated in height on high-strength bolts 8 .

The pendants 5 are attached by means of hinge joints 9 to the balancing beams 3 and the anchor structure 10 of the bridge support 2. The hinge joints 9 consist of plug-in cylindrical axles 11, mounted on the pendants 5 using cotter pins 12.

If necessary, to accurately adjust the length of the suspensions 5 during installation of the anchor device, holes are drilled in metal strips 6 in-place in one of the hinge joints 9.

The proposed anchor device, due to its support through the tangential support parts 4, provides reliable fastening of the anchor span to the bridge support 2 and the necessary temperature and angular displacements of the end face of the anchor span with through trusses at tearing loads up to 1800 kN (on one plane of the trusses).

Source of information taken into account:

- Anchor antiseismic device. "Overview" Antiseismic devices in mechanical engineering. Overview information. Issue 1, p. 12. Https://docplan.ru/Data1/52/52393/index/htm/.

Claims (1)

An anchor device including suspensions pivotally attached to the jack beam and the bridge support, characterized in that it is equipped with an anchor structure concreted in the body of the bridge support and balancing beams that are located above and across the jack beam of the anchor span and are supported on it by tangential supporting parts, and the pendants are made articulated in height from metal bands and eyes on high-strength bolts and attached to the balancing beams and to the anchor structure of the support of the mos and via pivot joints to insert cylindrical axes.

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