CN109944362A - T-section steel and threaded casing assembly connection type steel-concrete composite pipe T-joint - Google Patents

Abstract

T-steel and threaded sleeve assembly and connection formula steel concrete compound tube T-type node, including the first steel concrete compound tube and the second steel concrete compound tube, second rectangular steel plates structure rear end exposes end steel plate, internally threaded sleeve is embedded on front side of first steel concrete compound tube, the front half section of internally threaded sleeve is threaded with connecting stud, end steel plate trailing flank is welded with two T-steels, the web rear lateral portion of T-steel offers the spanner handle hole of connection corresponding with mounting hole, connecting stud nose threads are connected with the attaching nut in spanner handle hole, wing plate trailing flank is crimped on the first steel concrete compound tube leading flank by attaching nut.The present invention is greatly improved the bonding strength between two steel concrete compound tubes at T-type node, and the reliability for ensuring to connect, it is cast-in-place to be combined with prefabricated, convenient for construction, construction efficiency is high, construction quality can be guaranteed, and fully meet the requirements such as the whole stress of modern assembled architecture, energy conservation, antidetonation.

Description

T-section steel and threaded casing assembly connection type steel-concrete composite pipe T-joint

technical field

The invention belongs to the technical field of prefabricated building construction, and in particular relates to a T-shaped joint of a steel-concrete composite pipe assembled and connected by a T-shaped steel and a threaded casing.

Background technique

The single-section steel-concrete composite pipe used in prefabricated buildings has a rectangular cylindrical structure as a whole. After being manufactured in the factory, it is transported to the construction site for assembly. The biggest problem in the promotion and application of existing prefabricated buildings is that it cannot form a stable and unified system. The key to the problem lies in the joint connection between the steel-concrete composite pipes. The T-joint is one of the most common joints in prefabricated buildings. Most of the existing T-joint structures have weak structural integrity, poor seismic resistance, and easy The shortcomings of the prefabricated wall deformation and cracks are caused, and its connection form cannot meet the higher requirements of the prefabricated building.

SUMMARY OF THE INVENTION

In order to solve the deficiencies in the prior art, the present invention provides a T-shaped joint of steel-concrete composite pipe assembled and connected with a T-shaped steel and a threaded casing, which is compact and reasonable in structure, balanced in force, strong in stability, and strong in wind and shock resistance. .

In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: the T-shaped joint of the steel concrete composite tube assembled and connected by the T-shaped steel and the threaded casing, including the first steel concrete composite tube and the second steel concrete composite tube arranged perpendicular to each other, the third The rear side of a steel concrete composite tube is adjacent to the front end of a second steel concrete composite tube. The first steel concrete composite tube includes a first rectangular steel plate structure and a first concrete layer poured on the outer side of the first rectangular steel plate structure. The concrete composite pipe comprises a second rectangular steel plate structure and a second concrete layer poured on the outer side of the second rectangular steel plate structure, and a number of first screw ties are passed between the front side plate and the rear side plate of the first rectangular steel plate structure The front and rear ends of the first screw tie ribs are pre-buried in the first concrete layer, and a number of second screw tie ribs pass through the left and right side plates of the second rectangular steel plate structure. The front and rear ends of the screw tie bars are pre-buried in the second concrete layer, the end steel plates are exposed at the rear end of the second rectangular steel plate structure, and the first concrete layer on the front side of the first steel concrete composite pipe is pre-buried in the first concrete layer. The front and rear corresponding to the inner threaded casing of the left and right parts of the second concrete layer, the front end of the first screw tie bar corresponding to the inner threaded casing is threadedly connected to the second half of the inner threaded casing, the inner thread The front half of the casing is threadedly connected with connecting studs, and the left and right sides of the rear side of the end steel plate are respectively welded with a vertically arranged T-shaped steel. The T-shaped steel includes mutually perpendicular webs and flanges. The front side is welded to the rear side of the end steel plate, the rear side of the web is fixedly connected to the middle of the front side of the wing plate, the flange plate is provided with mounting holes corresponding to the front and rear of the web, and the mounting holes are arranged along the vertical direction of the web. One-to-one correspondence with the connecting studs, the rear side of the web is provided with a wrench operating hole corresponding to the installation hole, the connecting stud extends through the mounting hole into the wrench operating hole, and the front end of the connecting stud is threadedly connected with a The wrench operates the connecting nut in the hole, and the connecting nut crimps the rear side of the wing plate on the front side of the first steel concrete composite pipe.

A plurality of first through holes are opened on the web plate of the T-shaped steel, and each first through hole is located on the rear side between the upper and lower adjacent wrench operation holes.

The exposed end steel plate at the rear end of the second steel concrete composite pipe is provided with a plurality of second through holes arranged at intervals along the vertical direction.

In the first concrete layer, there are pre-embedded first tie-crack-resistant mesh pieces connected to the front and rear ends of the first screw tie bars, and a second tie-tie anti-crack mesh piece is pre-embedded in the second concrete layer. The rear side of the split mesh piece extends to the outside of the connecting studs adjacent to the front side of the first steel concrete composite pipe and on the left and right sides.

In the rectangular column space between the rear side of the end steel plate and the first steel concrete composite pipe, a concrete block pre-embedded with T-shaped steel, connecting studs and the exposed second tie-crack-resistant mesh is poured. The outer side faces are respectively connected with the left and right sides of the second concrete layer and are kept flush. The inner concrete is poured in the second steel concrete composite pipe, and the concrete block and the inner concrete are connected as a whole through the second through hole.

Using the above technical solution, the first concrete layer outside the first steel concrete composite pipe in the present invention, the pre-buried first tie-crack-resistant mesh, the first screw tie bar, the inner thread casing and the second steel concrete The second concrete layer outside the composite pipe, the pre-buried second tie-crack-resistant mesh, and the second screw tie bars are all prefabricated in the factory. During prefabrication in the factory, the end steel plate of the second steel concrete composite pipe and the rear end of the second tie-crack-resistant mesh are exposed. The T-shaped steel is pre-opened with mounting holes and first through holes, and the end steel plate is opened. second through hole.

The first steel concrete composite pipe and the second steel concrete composite tube are assembled after being transported to the construction site, so that the first steel concrete composite tube and the second steel concrete composite tube are vertically arranged, and the rear side of the end steel plate is connected with the first steel concrete composite tube. Connecting studs are pierced in the rectangular column space between the front sides of the combined pipes, and T-shaped steel is installed on the connecting studs. In the wrench operation hole, use a wrench to clamp the connecting nut and screw it to the connecting stud, so that the T-shaped steel is tightened. The wing plate is crimped with the front side of the first steel concrete composite pipe, and then the front side of the web of the T-shaped steel and the end steel plate are welded into one, and finally the formwork is supported on the left and right sides of the rectangular column space, and the formwork is on the formwork. The concrete is poured between and solidified into concrete blocks, and the concrete blocks are connected to the left and right as a whole through the first through hole and the wrench operation hole, so that the first steel concrete composite pipe and the second steel concrete composite pipe are firmly connected into one. The second tie-crack-resistant mesh is also poured into the concrete block, so as to ensure that the surface of the connection between the second concrete layer and the concrete block does not crack. When pouring the concrete blocks, the inner concrete is poured inside the second steel concrete composite pipe, and the concrete blocks and the inner concrete inside the second steel concrete composite pipe are connected together through a plurality of second through holes to further improve the connection at the T-shaped node. strength.

Since the second steel concrete composite pipe is generally used as the inner wall of the prefabricated building, and the first steel concrete composite pipe is used as the outer wall of the prefabricated building, the first steel concrete composite pipe adopts a factory-made overall structure, and the first steel concrete composite pipe is made by on-site connection. The steel concrete composite pipe is connected with the second steel concrete composite tube as a whole, and the second steel concrete composite tube also plays a role of supporting the first steel concrete composite tube.

In addition, the center line of the mounting hole on the wing plate of the T-shaped steel is located on the plane where the web is located, so that the first screw tie bar, the connecting stud and the wing plate can be stressed on the same plane to avoid the built-in concrete block. The unbalanced force of the steel members appears to be damaged, so as to ensure the reliability of the T-joint connection.

To sum up, the present invention can greatly improve the connection strength at the T-shaped node between two steel concrete composite pipes, and ensure the reliability of the connection. It is guaranteed to fully meet the overall stress, energy saving, earthquake resistance and other requirements of modern prefabricated buildings.

Description of drawings

1 is a schematic diagram of the plane layout of the present invention;

Fig. 2 is the side view of T-section steel in Fig. 1;

Fig. 3 is A-A sectional view in Fig. 2;

FIG. 4 is an enlarged view of the connection between the first screw tie bar, the inner thread sleeve, the connecting stud and the connecting nut in FIG. 1 .

Detailed ways

As shown in Fig. 1-Fig. 4, the T-shaped joint of steel concrete composite pipe assembled and connected with T-shaped steel and threaded casing of the present invention comprises a first steel concrete composite tube and a second steel concrete composite tube arranged perpendicularly to each other. The rear side of the steel concrete composite pipe is adjacent to the front end of the second steel concrete composite tube. The first steel concrete composite tube includes a first rectangular steel plate structure 1 and a first concrete layer 2 poured on the outer side of the first rectangular steel plate structure 1. The second steel-concrete composite pipe includes a second rectangular steel plate structure 3 and a second concrete layer 4 poured on the outer side of the second rectangular steel plate structure 3 . A first screw tie rib 5, the front and rear ends of the first screw tie rib 5 are pre-buried in the first concrete layer 2, and several A second screw tie bar 6, the front and rear ends of the second screw tie bar 6 are pre-buried in the second concrete layer 4, the rear end of the second rectangular steel plate structure 3 is exposed to the end steel plate 7, the first steel The first concrete layer 2 on the front side of the concrete composite pipe is pre-buried with internally threaded sleeves 8 corresponding to the left and right sides of the second concrete layer 4, respectively. The front end of the rib 5 is threadedly connected to the rear half of the inner threaded sleeve 8, the front half of the inner threaded sleeve 8 is threadedly connected with a connecting stud 9, and the left side and the right side of the rear side of the end steel plate 7 are respectively A vertically arranged T-shaped steel 10 is welded. The T-shaped steel 10 includes a web 11 and a wing plate 12 that are perpendicular to each other. The middle part of the front side of the plate 12 is fixedly connected, and the wing plate 12 is provided with mounting holes 13 corresponding to the front and rear of the web 11. The mounting holes 13 are provided along the vertical direction of the web 11 and correspond to the connecting studs 9 one-to-one. The rear side of the plate 11 is provided with a wrench operation hole 14 corresponding to the installation hole 13. The connecting stud 9 extends through the installation hole 13 into the wrench operation hole 14, and the front end of the connecting stud 9 is threadedly connected with a wrench operation hole 14. The inner connecting nut 15, the connecting nut 15 crimps the rear side of the wing plate 12 to the front side of the first steel concrete composite pipe.

The web 11 of the T-shaped steel 10 is provided with a plurality of first through holes 16 , and each first through hole 16 is located on the rear side between the upper and lower adjacent wrench operation holes 14 .

The exposed end steel plate 7 at the rear end of the second steel concrete composite pipe is provided with a plurality of second through holes 17 arranged at intervals along the vertical direction.

The first concrete layer 2 is pre-embedded with a first tie-crack-resistant mesh 18 connected to the front and rear ends of the first screw tie bars 5, and the second concrete layer 4 is pre-embedded with a second tie-crack-resistant mesh 19. The rear side of the second tie-crack-resistant mesh sheet 19 extends to the outside of the connecting studs 9 on the left and right sides adjacent to the front side of the first steel concrete composite pipe.

In the rectangular column space between the rear side of the end steel plate 7 and the first steel concrete composite pipe, a concrete block pre-embedded in the T-shaped steel 10, the connecting stud 9 and the exposed second tie-crack-resistant mesh 19 is cast. (not shown in the figure), the outer sides of the concrete blocks are respectively connected with the left and right sides of the second concrete layer 4 and kept flush, and the second steel concrete composite pipe is poured with inner concrete (not shown in the figure), and the concrete blocks It is integrated with the inner concrete through the second through hole 17 .

In the present invention, the first concrete layer 2 outside the first steel concrete composite pipe, the pre-embedded first tie-crack-resistant mesh 18, the first screw tie bars 5, the inner threaded sleeve 8 and the second steel concrete composite The second concrete layer 4 outside the pipe, the pre-buried second tie-crack-resistant mesh 19, and the second screw tie bars 6 are all prefabricated in the factory. When prefabricated in the factory, the end steel plate 7 of the second steel concrete composite pipe and the rear end of the second tie-crack-resistant mesh 19 are exposed, and the T-shaped steel 10 is pre-opened with a mounting hole 13 and a first through hole 16. The end steel plate 7 is provided with a second through hole 17 .

The first steel concrete composite pipe and the second steel concrete composite tube are assembled after being transported to the construction site, so that the first steel concrete composite tube and the second steel concrete composite tube are vertically arranged, and the rear side of the end steel plate 7 is connected to the first steel composite tube. Connecting studs 9 are pierced in the rectangular cylindrical space between the front sides of the concrete composite pipes. T-shaped steel 10 is installed on the connecting studs 9. In the wrench operation hole 14, use a wrench to clamp the connecting nut 15 and screw it to the connecting stud. 9, the wing plate 12 of the T-shaped steel 10 is crimped with the front side of the first steel concrete composite pipe, and then the front side of the web 11 of the T-shaped steel 10 is welded with the end steel plate 7 as a whole, and finally in the rectangular columnar space The left and right side support formwork, pour concrete between the formwork and solidify into a concrete block, and the concrete block is connected as a whole through the first through hole 16 and the wrench operation hole 14, so that the first steel concrete composite pipe, the second The two steel concrete composite pipes are firmly connected as a whole. The second tie-crack-resistant mesh 19 is also poured into the concrete block, so as to ensure that the surface of the connection between the second concrete layer 4 and the concrete block is not cracked. When pouring the concrete block, the inner concrete is poured inside the second steel concrete composite pipe, and the concrete block and the inner concrete inside the second steel concrete composite pipe are connected together through a plurality of second through holes 17 to further improve the T-shaped joint. connection strength.

Since the second steel concrete composite pipe is generally used as the inner wall of the prefabricated building, and the first steel concrete composite pipe is used as the outer wall of the prefabricated building, the first steel concrete composite pipe adopts a factory-made overall structure, and the first steel concrete composite pipe is made by on-site connection. The steel concrete composite pipe is connected with the second steel concrete composite tube as a whole, and the second steel concrete composite tube also plays a role of supporting the first steel concrete composite tube.

In addition, the center line of the mounting hole 13 opened on the wing plate 12 of the T-shaped steel 10 is located on the plane where the web plate 11 is located, so that the first screw tie bar 5, the connecting stud 9 and the wing plate 12 can be stressed at A plane can avoid the unbalanced damage of the steel members built in the concrete block, thereby ensuring the reliability of the T-joint connection.

This embodiment does not limit the shape, material, structure, etc. of the present invention in any form, and any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention belong to the protection of the technical solution of the present invention scope.

Claims (5)

1.T fashioned iron and threaded sleeve assembly and connection formula steel concrete compound tube T-type node, including the first steel concrete group being arranged in a mutually vertical manner Pipe and the second steel concrete compound tube are closed, the trailing flank of the first steel concrete compound tube is adjacent to the front end of the second steel concrete compound tube, the first steel Concrete compound tube includes the first rectangular steel plates structure and the first concrete layer for being cast in the first rectangular steel plates structure outside portion, and second Steel concrete compound tube includes the second rectangular steel plates structure and the second concrete layer for being cast in the second rectangular steel plates structure outside portion, and Several the first screw rod tension ribs are equipped between the front side board and back side panel of one rectangular steel plates structure, the first screw rod tension rib Rear and front end is embedded in the first concrete layer, is equipped with several between the left plate and right side plate of the second rectangular steel plates structure The rear and front end of second screw rod tension rib, the second screw rod tension rib is embedded in the second concrete layer, it is characterised in that: the second square The rear end of shape steel plate structure exposes end steel plate, is embedded with difference in the first concrete layer on front side of the first steel concrete compound tube Correspondence is drawn in the internally threaded sleeve of the second concrete layer left side and right side, the first screw rod corresponding with internally threaded sleeve The nose threads of knot muscle are connected to the second half section inside internally threaded sleeve, and the front half section of internally threaded sleeve is threaded with connection spiral shell Column, the left side and right edge of end steel plate trailing flank are respectively welded a vertically disposed T-steel, and T-steel includes mutual Vertical web and wing plate, the front side edge of web and end steel plate trailing flank are welded, in the back side edge and wing plate leading flank of web Portion is fixedly connected, and the mounting hole with web correspondence is offered on wing plate, if mounting hole is provided with along the vertical direction of web It does a and is corresponded with connecting stud, web rear lateral portion offers the spanner handle hole of connection corresponding with mounting hole, connects spiral shell Column passes through mounting hole and extend into spanner handle hole, and connecting stud nose threads are connected with the connection spiral shell in spanner handle hole Wing plate trailing flank is crimped on the first steel concrete compound tube leading flank by mother, attaching nut.

2. T-steel according to claim 1 and threaded sleeve assembly and connection formula steel concrete compound tube T-type node, feature exist In: several first open-works are offered on the web of T-steel, each first open-work is respectively positioned on neighbouring two spanner handle holes Between rear side.

3. T-steel according to claim 1 or 2 and threaded sleeve assembly and connection formula steel concrete compound tube T-type node, feature Be: vertically offered on the end steel plate that the second steel concrete compound tube rear end exposes several spaced apart Two open-works.

4. T-steel according to claim 3 and threaded sleeve assembly and connection formula steel concrete compound tube T-type node, feature exist In: the first drawknot cracking resistance mesh sheet for being connected to the first screw rod tension rib rear and front end is embedded in the first concrete layer, second is mixed The second drawknot cracking resistance mesh sheet is embedded in solidifying soil layer, the back side edge of the second drawknot cracking resistance mesh sheet reaches neighbouring first steel concrete compound tube The outside of leading flank and the connecting stud of the left and right sides.

5. T-steel according to claim 2 and threaded sleeve assembly and connection formula steel concrete compound tube T-type node, feature exist Poured in rectangular cylindrical space on rear side of: end steel plate between the first steel concrete compound tube by T-steel, connecting stud and The second exposed drawknot cracking resistance mesh sheet is embedded in interior concrete block, the lateral surface of concrete block respectively with the second concrete layer Left and right side is corresponding to be connected and keeps flushing, and has poured inner concrete, concrete block and inner concrete in the second steel concrete compound tube It is connected as one by the second open-work.