CZ305679B6 - Dismountable contact joint of reinforced-concrete poles - Google Patents

Abstract

In the present invention, there is disclosed a dismountable contact joint of reinforced-concrete poles formed by connection of a pole (1ú of a lower floor level and a pole (2) of a higher floor level with a possibility to eliminate wet procedures, welding and screwing, further with a possibility of its disassembly and reassembly in another place. The dismountable contact joint consists of at least one projecting metal bar (3), a lower floor level pole (1) top provided with a thread and a setting, rectification nut (4), one which there is from above inserted the higher floor pole (2) provided with a built-in metal plate (5) with at least one opening (6), fitted with a plastic casing (7) passing through up to the bearing cross section of the higher floor pole (2) for insertion of the metal bar (3).

Description

Contact demountable contact of reinforced concrete columns

Field of technology

The invention relates to the connection of columns of building structures in a modular embodiment of a vertical and a horizontal structure provided with connecting elements with the possibility of disassembling them, with the possibility of changing their rigidity and reassembling at another place. It is therefore a so-called dry joint without grouting concrete or without welding, allowing easy assembly, disassembly and relocation and reassembly.

Prior art

There are currently several ways and designs of dry detachable column joints. They are characterized by the connection of steel bars protruding from the threaded lower column heads, on which nuts are placed allowing vertical and horizontal alignment of the upper column, the lower head of which is provided with built-in, usually metal, elements which allow nuts to be fitted to threaded threaded rods. After mounting the upper column on the mentioned protruding bars and fitting the nuts, they are usually made in the corners of the connected columns, or around their circumference screw connections ensuring usually rigid connection of both columns. When dismantling the joint, the nuts are first loosened and then the upper column is lowered. The rigidity of this connection depends on the arrangement and rigidity of the built-in, usually metal elements in the base of the upper column. Said solution does not allow, in some cases, an advantageous articulation of the columns, while the rigidity of the connection due to the bending effects can vary within a considerable range and its determination usually requires experimental verification.

The essence of the invention

These disadvantages are largely eliminated by the proposed solution by connecting a vertical reinforced concrete column of the lower and upper floors, which allows easy assembly, disassembly and reassembly without the use of screw connections. The insertion of a contact spring bearing enables the adjustment of the stiffness of the contact and at the same time the controlled reduction of vibrations from an external source, such as from transport, industrial activities, etc., or internal source. From a static point of view, the proposed solution has the character of an articulated joint, which reliably transmits shear forces from external effects acting in the joint. The solution of the joint of the lower and upper storey columns according to the invention consists of several, but at least one metal rod protruding from the lower column head provided with a thread and a nut for height adjustment of the upper storey column and a metal storage plate built into the foot of the upper floor column through the hole for inserting the protruding rod, or rods and mounting on a height-balanced nut, or nut. In places, or. instead of holes in the metal plate built into the head of the lower column, holes are made, or an opening provided with a plastic sleeve into which the rod is inserted, or bars protruding from the head of the lower column.

In one exemplary embodiment, four threaded rods protrude from the head of the lower member, near the corners, on which rectifying nuts are mounted to align the upper column to the desired position. At the foot of the upper column is a built-in metal plate provided with four holes with flexible plastic sleeves, into which are inserted metal rods provided with a thread with nuts protruding from the head of the column of the lower floor.

By inserting a metal plate with a contact elastic layer provided with holes in the required places between the compensating, ie rectifying nut, and the built-in metal plate at the foot of the upper column, a flexible contact between the two columns is achieved, the dynamic properties of which can be determined in advance by the rigidity of the elastic layer. did not transmit vibrations, eg from the outside

-1 CZ 305679 B6 power supplies. The connection made in this way allows easy disassembly and subsequent assembly at another location.

Explanation of drawings

The invention will be further elucidated with the aid of the drawing, in which Fig. 1 and Fig. 2 show the connection of the columns of the lower and higher floors according to the proposed solution.

Examples of embodiments of the invention

Fig. 1 shows the connection of a column 1 of a lower storey with a column 2 of a higher storey. The vertical reinforced concrete column 1 is provided with four protruding bars 3 - profiles made of concrete reinforcement i5 provided with thread, on which mounting, ie rectifying nuts 4 are screwed, enabling height adjustment of the column 2. A column 2 is pushed on the part of the bars 3 higher floor. The contact between the rectifying nuts 4 is mediated by a metal plate 5 built in and properly anchored at the base of the higher floor column 2 by means of an anchoring reinforcement 10, provided with holes 6 directly connected by protruding bars 3 in the column head 1. Holes 6 in the metal plate 5 at the foot of the column 2 they are provided with a plastic housing 7 defining the dimension of the openings 6 to the size of the rods 3.

In another solution shown in Fig. 2, the connection of the lower floor column 1 to the higher floor column 2 is supplemented by a metal spreading plate 8 provided with a contact resilient layer 9 of desired dynamic properties limiting the transmission of vibrations and oscillations from the lower to the upper floor.

Industrial applicability

Connection - the contact of the columns of the lower and higher floors according to the present invention finds use in the construction of temporary and permanent buildings.

Claims (4)

Contact demountable joint of reinforced concrete columns formed by connecting a column (1) of a lower floor and a column (2) of a higher floor with the possibility of excluding wet processes, welding and screwing, with the possibility of disassembling and reassembling elsewhere, characterized in that it consists at least one protruding metal rod (3) from the head of a column (1) of lower degree provided with a thread and a mounting, rectifying nut (4), on which a column (2) of higher floor provided with a built-in metal plate (5) with at least one hole (6) is pushed from above ) provided with a plastic housing (7) extending up to the supporting cross-section of the column (2) of the upper floor for the insertion of the metal rod (3). Contact demountable contact according to claim 1, characterized in that the contact between the lower floor column (1) and the higher floor column (2) is limited to the contact of the rectifying nut (4) mounted on the metal rod (3) and the built-in metal plate ( 5). Contact demountable contact according to claim 1 and claim 2, characterized in that the mounting metal plate (5) at the foot of the higher-level column (2) is provided with at least one opening (6) extending up to the column (2) with a plastic housing ( 7) to allow the insertion of at least one protruding rod (3) and by means of an anchor reinforcement (10) it is built into the base of the column (2) of a higher floor. Removable contact according to any one of the preceding claims, characterized in that the contact of the mounting plate (5) built into the base of the higher floor column (2) with at least one rectifying nut (4) is made by means of a metal spreading plate (8) provided on the upper floor. surface with a contact resilient layer (9).