SU1675510A1 - Butt joint of span-pieces with column - Google Patents

Abstract

The invention relates to the field of construction, namely to the construction of multi-storey frame buildings of reinforced concrete elements. The aim of the invention is to simplify installation and reduce metal consumption. The butt connection of the bolts with the column includes steel rods 6 with threaded end parts located in the upper zone and passed through the holes 5 in the column 1, anchoring devices 9, connecting the reinforcement of the bolts 2 and steel rods, and nuts 14. Each anchoring device made in the form of a frame with ribs installed in parallel to the longitudinal walls and slots in the end walls. In one of the walls, the slots are located in its upper half, and in the other - in the lower one. In the lower junction area, the anchoring devices are put on top of steel rods that have been passed through the holes in the column right next to it, and are fastened with nuts and cutting along the ends, from above, are inserted into the slots of the anchoring devices and secured to them with nuts from two sides. sg e

Description

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In the upper joint zone of the anchoring device, one end side is inserted below the steel rods and installed against the column, while the other is put on the outlets of the crossbars, which are cut at the ends, and secured with nuts 14. The steel rods can be equipped with a bar 8, which are welded to the brand equal strength seam. Part of the reinforcement bars and steel bars can be made of rigidly connected

The invention relates to the construction, in particular to the construction of multi-storey frame buildings of reinforced concrete elements.

The aim of the invention is to simplify installation and reduce metal consumption.

FIG. 1 shows the butt joint of the middle column with crossbars; in fig. 2 is a section AA of FIG. one; in fig. 3-section BB in FIG. one; in fig. 4 — node I in FIG. one; in fig. 5 - connection of the extreme column with the bolt; in fig. 6 shows a section B-B in FIG. five; in fig. 7 is a cross-section of the FIG. five; in fig. 8 - a part made of steel rods with a threaded part of bolt sections fixed on the bar is installed in the outer columns; in fig. 9 - steel rod or reinforcement with a threaded part of high-strength bolts; in fig. 10 - anchoring device.

The butt joint includes a column 1 and bolts 2 fixed on it. The crossbars in the upper zone have reinforcement outlets 3, and in the lower zone - reinforcement outlets 4. Cutting is made at the ends of the reinforcement outlets, In the column at the levels of reinforcement outlets, holes 5 are made, expanded Located in the upper part from the vertical axis to the front of the column, the upper 6 and lower 7 steel rods with threaded end parts are inserted into the holes. In the extreme rows of columns, steel rods are combined into one detail by means of a strip 8, to which they are welded into the ropes with an equal strength seam.

Steel rods and outlets of the reinforcement are interconnected by anchoring devices 9, fixing their mutual position and ensuring coaxiality.

Each anchoring device is made in the form of a frame 10 with ribs 11 installed parallel to the extension walls and slots 12 in the face

with them, sections of bolts, the inner diameters of which are cut, are equal, respectively, to the diameter of the reinforcement bars and the diameter of the steel rods and coincide with them in steel grade. A cut section of the crossbar reinforcement and steel rods may be filled from high-strength bolt sections connected to the crossbar reinforcement and steel rods with crimp washers. 2 hp f-ly, 10 ill.

the walls 13. In one of the walls of the slot placed in its upper half, and the other at the bottom. For anchoring devices installed in the lower connection area, the frames and the ribs may be made thinner than for the anchoring devices installed in the upper connection area. The diameters of steel rods in the lower zone can be about 1.5 times smaller than the diameters of the rods in the upper zone. This will significantly save metal. Outlets of rebar reinforcement in the lower zone are shorter, than in the upper zone. All these differences are due to the fact that the forces perceived by the reinforcement of the upper zone of the node, during the operation of the building, can exceed the forces in the lower zone by 5-7 times.

In the lower zone, the anchoring devices are put on top of the steel rods of the column and fastened with nuts on them, and the reinforcement outlets of bolts are mounted on the anchoring devices from above in the slots and fixed to them from both sides by nuts 14. In the upper zone, the anchoring fixtures are mounted on the reinforcement outlets of crossbars and fixed the nuts 14 on both sides are on them, and the steel rods of the column are mounted on top of the frame slots and also secured with nuts 14. The frames in the upper and lower zones of one of the end walls are fixed to the column a.

Cutting a part of the steel rods of the column and reinforcement releases of the crossbars can be made in several versions.

In the first embodiment, cutting is simply done at the ends of the rods and releases. In this case, the metal is consumed in advance, since when calculating the bearing capacity, the diameters of the reinforcement bars and steel rods will be taken according to the internal diameter of the narrazka.

According to the second variant, bolts 15, internal diameters are glued to the ends of the rods and outlets.

the cuts of which are equal, respectively, to the diameter of steel rods and reinforcement bars and coincide with them in steel grade.

In the third variant, segments of high-strength bolts 17 are attached to the ends of the rods and outlets using crimping washers 16. The diameter of the high-strength bolt is much smaller than the diameter of the rebar.

When performing the threaded part according to the second and third variants, creating equal strength joint, the metal consumption is significantly reduced by reducing the diameters of the reinforcement bars and steel rods of the column.

The installation of the connection of rigepa with the column is carried out as follows.

Claims (3)

1.Stykovy connection of crossbars with a column including connected between a connecting device for the release of reinforcement bolts and steel rods with threaded end parts in the lower and upper zones, missed through the holes in the column in the upper zone, and chuck elements, so that with simplified installation and reduction of metal consumption, each connecting device is made in the form of ribs installed in parallel, e longitudinal walls and with protrusions in the end CTenKdx, in one of the cuts of the slot 1 in its upper part and in the opposite wall - in her h / okng chas., while in the lower zone near the graph.) and the street the frame is facing with slits in the upper zone — with slits up and first into the column face with anchor elements, the bolts of the crossbars are installed in the slots opposite the end face. walls and secured to anchor elements on both sides. 2. Connection according to claim 1. distinctively, “- mc threaded concept parts of the armature bolts and steel bars and rods are made of the 6) lt cut connected with them. 3. Connection ps nn. 1 and 2. About the fact that the lengths of bolts with bolt release fittings and steel rods are connected with the help of crimping Washers. Fi.2 S S 14 P 15 ZD7 FIGA dd 9 FIG. 6 P FIG. one 12 / s I I Fig.d / 1C 7 Fig.d