RU2558046C2 - Three-hinged glued frame - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to civil engineering and can be used for wooden frame structures used in conditions of high seismicity. A three-hinged glued frame with hinges in bearing and ridge units includes glued wooden stands, glued wooden inclined crossbars, curvilinear struts and stoppers in eaves gutter units, and the stoppers of the eaves units are fitted with steel springs and steel brackets, while the collars fastening glued wooden stands with the glued wooden inclined crossbars are fitted with rubber linings.

EFFECT: increase of the seismic strength of the three-hinged glued frame due to the shock-absorbing ability of its eaves and ridge units.

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Description

The invention relates to construction and can be used as wooden frame structures operated in conditions of increased seismicity.

Known prefabricated glued wooden frame (Structures made of wood and plastic. A textbook for high schools. Edited by G.G. Carlsen. 4th edition, revised and additional M: Stroyizdat, 1975, pp. 236-237, Fig. V.34, a, b), adopted for the analogue, including glued wooden racks, glued wooden inclined crossbars, wooden struts (struts), double-sided linings, steel elements (clamps).

The disadvantage of the described analogue is the lack of seismic strength due to chipping of wood along the adhesive joints in the place of setting steel elements (clamps) or the splitting of double-sided linings in the cornice nodes.

Known prefabricated wooden frame (Patent No. 2173377 E04C 3/42. Prefabricated wooden frame / Merkulov A.T., Turkovsky SB, Pogoreltsev A.A., Grill A.A. Publ. 10.09.2001), adopted as a prototype including racks, inclined crossbars, curvilinear struts, emphasis.

The disadvantage of the described prototype is the lack of strength of the cornice nodes due to a fracture of curvilinear struts under seismic effects.

The technical problem solved by the invention is to increase the seismic strength of a three-joint glued frame due to the depreciation ability of its cornice and ridge nodes.

The technical problem is solved as follows: a three-hinged glued frame with hinges in the support and ridge nodes includes glued wooden racks, glued wooden inclined crossbars, curved struts and stops in the cornice nodes, and the emphasis of the cornice nodes are equipped with steel springs and steel brackets, while the clamps fastening glued wooden racks with glued wooden inclined crossbars, equipped with rubber linings. In addition, the ridge assembly is equipped with a steel figured plate attached to the bottom with two glued bolts with washers on each side of the joint, glued with glued wooden inclined bolts, and dampers are installed between the bolt washers and the steel figured plate.

The following shock absorbing devices are provided in the cornice nodes of the three-joint glued frame:

- in the form of a steel spring (twisted, disk, spring) or in the form of a gasket of hard rubber in the connection of the stop with a curved brace;

- in the form of an elastic steel bracket in connection of an emphasis with glued wooden racks and glued wooden inclined crossbars;

- in the form of a rigid rubber gasket, which is a shock-absorbing damper placed between the clamp and the glued wooden inclined crossbar.

In addition, the clamp and the steel bracket in the cornice assembly are attached to the glued wooden inclined bolt and the glued wooden stand on the screw bolts, i.e. on resiliently flexible bonds.

In the ridge assembly of the three-joint glued frame, dampers (in the form of hard rubber gaskets) are placed between the bolt washers and a steel figured overlay as shock absorbing devices.

The invention is illustrated by drawings.

Figure 1 shows a General view of a three-joint glued frame from the facade; figure 2 - cornice node A with a view aa; figure 3 - ridge node B with a section BB.

The three-hinged glued frame includes glued wooden posts 1, glued wooden inclined crossbars 2, curved struts 3, stops 4, clamps 5, steel springs 6, steel brackets 7, rubber pads 8, fastening bolts 9, stud bolts 10, glued rods 11, steel figured overlay 12, bolts with washers 13 and dampers 14.

Under seismic loads on a three-joint glued frame (both vertical and horizontal), curved squeeze-bent struts 3, working according to a more advantageous two-span scheme, will reduce the dynamic effect due to steel springs 6 and steel brackets 7 installed at the ends of the stops 4.

The cushioning ability of the cornice units is enhanced by rubber pads 8, placed between the clamps 5 and glued wooden inclined crossbars 2, and elastic-flexible joints on the eye bolts 10.

The dampers 14 of the ridge assembly increase the seismic resistance of the three-joint glued frame.

Claims (2)

1. A three-hinged glued frame with hinges in the support and ridge units, including glued wooden posts, glued wooden inclined beams, curved struts and stops in the cornice units, characterized in that the supports of the cornice units are equipped with steel springs and steel brackets, while the clamps fastening glued wooden racks with glued wooden inclined crossbars, equipped with rubber linings. 2. The three-hinged glued frame according to claim 1, characterized in that the ridge assembly is equipped with a steel figured bottom attached to the glued wooden inclined bolts with two bolts with washers on each side of the joint, with dampers installed between the bolt washers and the steel figured overlay.

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