CN104358360B - A kind of building iron connects uses full grout sleeve - Google Patents

Abstract

The utility model relates to a full grouting sleeve for connecting building steel bars, which belongs to the technical field of civil engineering. The inner wall of the middle part of the sleeve main body of the present invention is provided with a steel bar axial limit guide block, and a guiding slope is provided between it and the inner wall of the sleeve main body; a positioning bolt is provided on the main body of the prefabricated end sleeve, and the prefabricated end steel bar passes through the positioning bolt Axial and radial fixation; the main body of the sleeve is formed by one-time casting of ductile iron, and the production cost is low. The outer surface is rough, which ensures the anchoring force between the grouting sleeve and the concrete. Protruding ring ribs; identification gaps are provided on the surface of the main body of the sleeve at the cast-in-place end to prevent the grouting sleeve from being reversed during installation; a sealing ring is provided inside the main port of the sleeve at the prefabricated end. When the grouting sleeve of the present invention is axially docked with the steel bar, it can automatically realize precise axial control and radial positioning, thereby ensuring the positioning accuracy between the steel bar and the grouting sleeve and meeting the quality requirements of building construction.

Description

A kind of full grouting sleeve for building reinforcement connection

technical field

The invention belongs to the technical field of civil engineering, in particular to a full grouting sleeve for connecting building steel bars.

Background technique

At present, in my country's reinforced concrete building structures, most of the connection methods for building steel bars are traditional steel bar connection methods, namely binding, welding and threading.

When the binding method and thread method are used, when the node gap of the component reinforcement is relatively small, it is difficult to use tools to bind it, so it is not suitable for the node reinforcement connection where the component reinforcement is relatively dense, and the construction quality is seriously affected by human factors, and the skeleton is easily deformed .

When the welding method is used, it is also not suitable for the joint reinforcement connection with relatively dense component reinforcement, and the welding technology requirements are high. Due to the uneven technical level of the construction personnel, the construction quality is more seriously affected by human factors, and the welding pass rate is unstable. Moreover, the welding method consumes a lot of energy, and is sometimes limited by construction conditions, resulting in irregular electricity consumption, which will bring unnecessary hidden dangers to construction safety.

With the continuous progress of modern building technology, the requirements for building construction quality are getting higher and higher. It is difficult for the traditional steel bar connection method to meet the requirements of modern building construction. Under this background, relevant technical personnel in the field have developed a new The latest steel bar connection method, that is, the use of grouting sleeves to connect steel bars, this brand-new steel bar connection technology first appeared in Japan and has gradually spread to the world.

The grouting sleeve is the core part of the steel bar connection, including a full grouting sleeve and a half-grouting sleeve. One end of the half-grouting sleeve is threaded to the steel bar, and the other end is connected to the steel bar by grouting. However, the half-grouting sleeve is used for the steel bar connection. The labor intensity is high, and it is not intuitive to judge whether the threaded connection between the steel bar and the sleeve is in place, it is easily affected by human factors, and the project quality is not easy to control. Although the existing full-grouting sleeve no longer uses threaded connection, when the steel bar and the sleeve are axially connected, precise axial control cannot be achieved, and there is no radial positioning function, and the positioning accuracy of the steel bar and the sleeve is extremely high. Poor, it is difficult to meet the quality requirements of building construction.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides a full grouting sleeve for building steel bar connection, which can automatically realize precise axial control when the steel bar and the grouting sleeve are axially connected, and can automatically realize radial positioning, The positioning accuracy between the steel bar and the grouting sleeve is guaranteed to meet the quality requirements of building construction.

In order to achieve the above object, the present invention adopts the following technical solution: a full grouting sleeve for building steel bar connection, including a sleeve main body, a first grouting port and a second grouting port, one end of the sleeve main body is a cast-in-place end , the other end of the sleeve main body is a prefabricated end, the first grouting port is set on the cast-in-place end of the sleeve main body, the second grouting port is set on the prefabricated end of the sleeve main body, the first grouting port Both the grout opening and the second grouting opening are connected with a grouting guide pipe, and a steel bar axial limit guide block is arranged on the middle inner wall of the sleeve body, and the steel bar axial limit guide block is connected with the sleeve main body. Guide slopes are arranged between the inner walls.

The number of said steel bar axial limit guide blocks is several, and they are evenly distributed along the circumference of the inner wall of the sleeve main body.

The main port of the sleeve at the prefabricated end and the steel bar at the prefabricated end, and the main port of the sleeve at the cast-in-place end and the steel bar at the cast-in-place end all adopt clearance fit.

A positioning bolt hole is also arranged on the sleeve main body of the prefabricated end, and a positioning bolt is installed in the positioning bolt hole, and the prefabricated end steel bar is fixed axially and radially through the positioning bolt.

The main body of the sleeve is formed by one-time casting of nodular cast iron.

In order to ensure the anchoring force between the full grouting sleeve and the concrete and the grouting material, both the inner and outer surfaces of the main body of the sleeve adopt rough surfaces.

In order to prevent the full grouting sleeve from being reversed during installation, an identification notch is provided on the port surface of the main body of the sleeve at the cast-in-place end.

Several protruding ring ribs are arranged on the inner wall of the sleeve main body.

A sealing ring is arranged in the port of the sleeve main body of the prefabricated end.

Beneficial effects of the present invention:

Compared with the prior art, the present invention can automatically realize accurate axial control and radial positioning when the steel bar and the grouting sleeve are connected axially, thereby ensuring the positioning accuracy between the steel bar and the grouting sleeve. Meet the quality requirements of building construction; the grouting sleeve is designed with an identification gap at the pouring end on site to prevent the grouting sleeve from being reversed during installation; the grouting sleeve is made of nodular cast iron for one-time casting, which has low production costs and is suitable for mass production; grouting The inner and outer surfaces of the sleeve are designed with a rough surface to ensure the anchoring force between the grouting sleeve and the concrete and grouting material.

Description of drawings

Fig. 1 is a kind of building reinforcing bar connection of the present invention and is used for full grouting sleeve structural representation;

Fig. 2 is a view from direction A in Fig. 1;

Fig. 3 is B-B sectional view among Fig. 1;

Fig. 4 is a view from direction C in Fig. 1;

In the figure, 1—sleeve main body, 2—first grouting port, 3—second grouting port, 4—reinforcement axial limit guide stopper, 5—guiding slope, 6—grouting guide pipe, 7—positioning Bolt hole, 8—locating bolt, 9—prefabricated end reinforcement, 10—in-situ pouring end reinforcement, 11—sealing ring, 12—protruding ring reinforcement, 13—identification gap, 14—grouting material.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1, 2, 3, and 4, a full grouting sleeve for building steel bar connection includes a sleeve main body 1, a first grouting port 2 and a second grouting port 3, and one end of the sleeve main body 1 The other end of the sleeve body 1 is a prefabricated end, the first grouting port 2 is set on the cast-in-place end of the sleeve body 1, and the second grouting port 3 is set on the sleeve body 1 On the prefabricated end, the first grouting port 2 and the second grouting port 3 are connected with a grouting guide pipe 6, and a steel bar axial limit guide block 4 is arranged on the inner wall of the middle part of the sleeve main body 1, A guiding slope 5 is provided between the reinforcing bar axial limit guiding block 4 and the inner wall of the sleeve main body 1 .

There are 3 to 6 pieces of said steel bar axial limit guide stoppers 4, which are evenly distributed along the inner wall of the sleeve main body 1 in the circumferential direction.

The port 1 of the sleeve body at the prefabricated end and the steel bar 9 at the prefabricated end, and the port 1 of the sleeve body at the cast-in-place end and the steel bar 10 at the cast-in-place end all adopt clearance fit.

A positioning bolt hole 7 is also arranged on the sleeve main body 1 of the prefabricated end, and a positioning bolt 8 is installed in the positioning bolt hole 7, through which the reinforcing bar 9 of the prefabricated end is fixed axially and radially.

The sleeve main body 1 is formed by one-time casting of nodular cast iron.

In order to ensure the anchoring force between the full grouting sleeve and the concrete and the grouting material, the inner and outer surfaces of the main body 1 of the sleeve adopt rough surfaces.

In order to prevent the full grouting sleeve from being reversed during installation, an identification notch 13 is provided on the port surface of the sleeve main body 1 at the cast-in-place end.

Several protruding ring ribs 12 are arranged on the inner wall of the sleeve main body 1 .

A sealing ring 11 is arranged in the port of the sleeve main body 1 at the prefabricated end.

Below in conjunction with accompanying drawing, the one-time use process of the present invention is illustrated:

Before installing the full grouting sleeve, it is necessary to observe the identification notch 13 to determine the installation direction, so as to prevent the sleeve main body 1 from being installed upside down.

First, insert the prefabricated end steel bar 9 into the sleeve main body 1 of the prefabricated end until the steel bar head of the prefabricated end steel bar 9 touches the guide slope 5, and is pushed against the axial limit guide block 4 under the guidance of the guide slope 5, The prefabricated end steel bar 9 is installed in place, under the action of the guide slope 5, the axial and radial positions of the prefabricated end steel bar 9 are automatically positioned, and at the same time, the seal ring 11 has been sealed between the prefabricated end sleeve main body 1 port and the prefabricated end steel bar 9, Finally tighten the positioning bolts 8 so that the axial and radial positions of the prefabricated end reinforcement bars 9 are fixed.

According to the above method, connect other prefabricated end steel bars 9 that need to be connected with the corresponding full grouting sleeves, and then configure and install them in the designated prefabricated component formwork according to the architectural design requirements, and cut out a certain number of grouting guide pipes 6 of appropriate length, and put One end of the grouting guide pipe 6 is inserted into the first grouting port 2 and the second grouting port 3 respectively, and the other end of the grouting guide pipe 6 must stretch out 80 to 100 millimeters outside the prefabricated component before entering the concrete pouring of the prefabricated component.

After the concrete prefabricated components equipped with full grouting sleeves are hoisted to the corresponding parts of the building construction, the cast-in-place end reinforcement bars 10 of the corresponding positions are sequentially inserted into the sleeve main body 1 of the cast-in-place end, and the cast-in-place end reinforcement bars 10 are installed in place.

Depending on the connection of the construction components, inject the grouting material 14 into the sleeve body 1 through the grouting guide pipe 6 of the first grouting port 2 (or the second grouting port 3) until the grouting material 14 fills the inner cavity of the sleeve body 1 And flow out from the second grouting port 3 (or the first grouting port 2), and then the first grouting port 2 and the second grouting port 3 are closed until the grouting material 14 is completely solidified, that is, the steel bar connection is completed.

The solutions in the embodiments are not intended to limit the scope of patent protection of the present invention, and all equivalent implementations or changes that do not deviate from the present invention are included in the patent scope of this case.

Claims (7)

1. building iron connection uses a full grout sleeve, including sleeve body, the first grouting port and the second grouting port, described set Cylinder main body one end is cast-in-site end, and the sleeve body other end is prefabricated end, and described first grouting port is arranged on showing of sleeve body On field cast end, described second grouting port is arranged on the prefabricated end of sleeve body, and described first grouting port and the second grouting port are equal Connect and have grouting guiding tube, it is characterised in that: on the middle part inwall of described sleeve body, it is provided with reinforcing bar axial limiting guides gear Block, is provided with guiding surface between described reinforcing bar axial limiting guide stopper and sleeve body inwall；In order to ensure full grout sleeve with Anchor force between concrete and grouting material, described sleeve body inner and outer surfaces all uses rough surface；In order to prevent entirely being in the milk Sleeve is the most anti-loaded, is provided with identification breach on the sleeve body port surface of described cast-in-site end.

A kind of building iron the most according to claim 1 connects uses full grout sleeve, it is characterised in that: described reinforcing bar is axial The quantity of spacing guide stopper is some, and along the uniform setting of circumference of sleeve body inwall.

A kind of building iron the most according to claim 1 connects uses full grout sleeve, it is characterised in that: described prefabricated end Sleeve body port all uses matched in clearance with sleeve body port and the cast-in-site end bar of prefabricated end bar, cast-in-site end.

A kind of building iron the most according to claim 1 connects uses full grout sleeve, it is characterised in that: at described prefabricated end Sleeve body on be additionally provided with positioning bolt hole, bolt is installed in positioning bolt hole, by bolt to prefabricated End bar is axially and radially fixed.

A kind of building iron the most according to claim 1 connects uses full grout sleeve, it is characterised in that: described sleeve body Use the shaping of spheroidal graphite cast-iron one-step casting.

A kind of building iron the most according to claim 1 connects uses full grout sleeve, it is characterised in that: described sleeve master Some protruding ring muscle it are provided with on internal wall.

A kind of building iron the most according to claim 1 connects uses full grout sleeve, it is characterised in that: at described prefabricated end Sleeve body port in be provided with sealing ring.