CN205369545U - Assembled circular steel tube concrete dysmorphism post corner post nodal connection structure - Google Patents

Abstract

The utility model relates to an assembled circular steel pipe concrete special-shaped column corner column node connection structure. The special-shaped column corner column is a ∟-shaped reinforced concrete prefabricated part, and there are circular steel tube concrete columns inside. The circular steel tube concrete columns are connected as a whole by a patch plate, and the grouting sleeve welded on the upper part of the circular steel tube concrete column constitutes the connection between columns. Node; the reinforced concrete beam is a semi-prefabricated composite beam, the lower part is prefabricated in the factory, and the upper part is the post-cast part connected with part of the cast-in-place floor; the outer arm of the circular steel pipe concrete column located at the joint of the special-shaped column corner column and the reinforced concrete beam is welded A-type connectors, B-type connectors are welded on the panel, the lower main reinforcement of the reinforced concrete beam is fixedly connected with the A-type connectors, and the upper main reinforcement is fixedly connected with the B-type connectors, and the A-type connectors and B-type connectors form beam columns Connect the nodes. The utility model can give full play to the characteristics of good seismic performance and space saving of the circular steel pipe concrete special-shaped column structure.

Description

Joint connection structure of prefabricated round concrete-filled steel tube special-shaped column and corner column

technical field

The invention relates to an assembled concrete-filled steel pipe special-shaped column structure, in particular to an assembled round concrete-filled steel pipe special-shaped column corner column node connection structure.

Background technique

At present, the country is vigorously promoting the industrialization of green buildings and housing, so the prefabricated structure has received more and more attention. The prefabricated steel pipe concrete special-shaped column structure is a building form that conforms to modern design concepts and national policies, but the problem of node connection It has become a key issue restricting its rapid development. Therefore, it is necessary to research and innovate the joint connection method and construction method of the prefabricated steel pipe concrete. The special-shaped column structure is applied to cluster high-rise residential buildings, which can solve the problem of column protruding from the wall. face problem.

Contents of the invention

The present invention aims to provide an assembled circular concrete-filled steel tube special-shaped column corner-column joint connection structure to effectively solve the key problems of column-to-column joints and beam-column joint connections, and at the same time give full play to the good seismic performance of the circular steel tube concrete special-shaped column structure and save The characteristics of space provide a construction method for the reliable connection of prefabricated special-shaped column nodes.

The present invention solves its technical problem, and the technical solution adopted is:

A prefabricated circular steel pipe concrete special-shaped column corner column joint connection structure, including special-shaped column corner columns and reinforced concrete beams, characterized in that:

The special-shaped column corner column is a ∟-shaped reinforced concrete prefabricated part. There are circular steel tube concrete columns inside the special-shaped column corner column. The grouting sleeve constitutes the connection node between columns;

The reinforced concrete beam is a semi-prefabricated composite beam, the lower part is factory prefabricated, and the upper part is the post-cast part connected with part of the cast-in-place floor;

A-type connectors are welded on the outer arm of the steel pipe of the circular concrete-filled steel pipe column at the joint between the corner column of the special-shaped column and the reinforced concrete beam, and the B-type connector is welded on the upper panel between the circular steel pipe concrete columns. The A-type connector is fixedly connected, the upper main reinforcement of the reinforced concrete beam is fixedly connected with the B-type connector, and the A-type connector and the B-type connector constitute the connection node between the column and the beam.

Adopt the present invention of above-mentioned technical scheme, compared with prior art, its outstanding feature is:

(1) The connection nodes of columns and columns and the connection nodes of columns and beams have the characteristics of reliable connection, convenient construction and low cost, which provide better support for the prefabricated circular steel pipe concrete special-shaped column structure in the development of housing industrialization. ground conditions.

(2) The node connectors between columns and columns and between columns and beams can not only ensure the accurate positioning of prefabricated beams, but also form effective connections and fixations.

(3) The application of semi-prefabricated superimposed reinforced concrete beams can make the layout of cast-in-place slab reinforcement more flexible and convenient, which can not only ensure the effective connection of beams and slabs, but also flexibly arrange the anchor reinforcement connected to the prefabricated slab.

(4) All the work that needs to be welded is completed in the prefabrication field, and the connection of the assembly parts is all adopted in the wet connection method, so that the engineering quality problems caused by the difference in welding quality can be effectively avoided.

As preferably, the further technical scheme of the present invention is:

A total of three circular steel pipe concrete columns are arranged in the special-shaped column corner column, one at the top of the corner, and one at the connection position between the column and the beams on both sides.

The panels are processed and formed by steel plates. The thickness and length of the panels are determined according to the spacing of the circular concrete-filled steel tube columns. The panels are arranged vertically and fixed by welding with the outer arms of the circular steel tube concrete columns at both ends.

The A-type connector is formed by steel plate, including the bottom plate and the support vertical plate. The support vertical plate is welded on the outer end of the bottom plate. The plate is provided with a reserved groove that is clamped into the lower main reinforcement of the reinforced concrete beam. Through such a structure, it can not only ensure the accuracy of the position of the reinforced concrete beam, but also play the role of connection and fixation.

The B-type connector is formed by steel plate, including the lower support plate and the upper support plate. The bottom of the lower support plate is clamped and welded to the trim plate, and the upper support plate is welded to the lower support plate. There are snap-in steel bars on both sides of the upper support plate. The reserved hole for the upper main reinforcement of the concrete beam.

The ends of the lower main reinforcement and the upper main reinforcement of the reinforced concrete beam are provided with a buckle at a certain distance, and the nut is assembled on the buckle, and the lower main reinforcement and the upper main reinforcement are respectively locked and fixed with the A-type connector and the B-type connector through the nut.

Through the above optimized structure, the patch plate can ensure the effective connection between the round concrete-filled steel tube columns, and improve the overall strength of the corner column body of the special-shaped column; the beam-column joints use two special connectors to connect the main reinforcement of the beam and the concrete-filled steel tube column, and fix them with nuts The main reinforcement of the prefabricated beam can not only ensure the accuracy of the position of the beam but also play the role of connection and fixation.

Description of drawings

Fig. 1 is the structural schematic diagram of special-shaped column corner column of the embodiment of the present invention;

Fig. 2 is the reinforced concrete beam structure schematic diagram of the embodiment of the present invention;

Fig. 3 is the axonometric view of the special-shaped column corner column and the reinforced concrete beam connection of the embodiment of the present invention;

Fig. 4 is the connection elevation view of special-shaped column corner column and reinforced concrete beam of the embodiment of the present invention;

Fig. 5 is a side view of the special-shaped column corner column and the reinforced concrete beam connection of the embodiment of the present invention;

Fig. 6 is a top view of the special-shaped column corner column and the reinforced concrete beam connection of the embodiment of the present invention;

Fig. 7 is the front view of the A-type connector of the embodiment of the present invention;

Fig. 8 is a top view of the A-type connector of the embodiment of the present invention;

Fig. 9 is the front view of the B-type connector of the embodiment of the present invention;

Fig. 10 is a side view of the B-type connector of the embodiment of the present invention;

In the figure: special-shaped column corner column 1; reinforced concrete beam 2, cast-in-place floor slab 3, grouting sleeve 11; longitudinally distributed steel bars 12; B-type connector 13; A-type connector 14; round concrete-filled steel tube column 15; Lower main rib 21; upper main rib 22; lower support plate 131; upper support plate 132; reserved hole 133; bottom plate 141; support vertical plate 142; reserved groove 143;

detailed description

The present invention will be further described below in conjunction with the examples, and the purpose is only to better understand the content of the present invention.

Referring to Figures 1-6, this prefabricated circular steel pipe concrete special-shaped column corner column node connection structure includes three parts: special-shaped column corner column 1, reinforced concrete beam 2 and cast-in-place floor slab 3, involving column-to-column connection nodes and beam-to-column joints Connect the nodes.

The special-shaped column corner column 1 is a ∟-shaped reinforced concrete prefabricated part. There are longitudinally distributed steel bars 12 and hoop stirrups inside the special-shaped column corner column 1. A total of three circular steel pipe concrete columns 15 are arranged in the special-shaped column corner column 1. There is one at the top of the corner, and the column and One is provided for the connecting positions of the two side beams respectively. The round concrete-filled steel tube column 15 is made of high-strength concrete poured inside the seamless round steel tube with an outer diameter of 102 mm. The outer surface of the round concrete-filled steel tube column 15 is surfacing with a shear key with a height of 2.5 mm. The round concrete-filled steel tube column 15 is used as a special-shaped column The edge member of the structure has the advantages of high bearing capacity and good ductility.

Between the circular concrete-filled steel tube columns 15, the decorative plates 16 are arranged at intervals. The decorative plates 16 are formed by steel plates with a thickness of 20mm. The thickness and length of the steel plates are determined according to the distance between the circular steel tube concrete columns 15. The steel pipe outer arm of the circular steel pipe concrete column 15 at the end is welded and fixed to form a whole steel structure cast in the special-shaped column corner column 1.

The upper part of the circular steel pipe concrete column 15 is welded with a grouting sleeve 11. The grouting sleeve 11 is made of a seamless round steel pipe with an outer diameter of 140mm. The height is 240mm, so that the anchorage length of the round concrete-filled steel tube column 15 of the special-shaped column corner column 1 on the upper floor can reach 115mm; the grouting sleeve 11 constitutes the connection node between the columns, and the connection of the grouting sleeve 11 can ensure the reliability of the connection. It is simple and easy to implement, especially suitable for prefabricated structure buildings.

A-type connectors 14 are welded on the steel pipe outer arms of the round concrete-filled steel tube columns 15 , and B-type connectors 13 are welded on the upper panels 16 between the round concrete-filled steel tube columns 15 .

The reinforced concrete beam 2 is a semi-prefabricated composite beam, the lower part is factory prefabricated, and the upper part is a post-casting part connected with a part of the cast-in-place floor 3; the ends of the lower main reinforcement 21 and the upper main reinforcement 22 of the reinforced concrete beam 2 are 100mm away from the buckle , Set the assembly nut on the buckle.

The lower main reinforcement 21 of the reinforced concrete beam 2 is fixedly connected to the A-type connector 14, and the upper main reinforcement 22 of the reinforced concrete beam 2 is fixedly connected to the B-type connector 13, and the A-type connector 14 and the B-type connector 13 constitute the connection between the column and the beam. Connect the nodes.

7-10, the A-type connector 14 and the B-type connector 13 are both processed and welded by steel plates with a thickness of 20 mm.

The A-type connector 14 is composed of a bottom plate 141 and a support vertical plate 142. The support vertical plate 142 is welded on the outer end of the bottom plate 141, and the inner end of the bottom plate 141 and the steel pipe outer arm of the circular steel pipe concrete column 15 pass through an arc welding surface 144. To connect, the supporting vertical plate 142 is provided with a reserved groove 143 that snaps into the lower main reinforcement 21 of the reinforced concrete beam 2 .

The B-type connector 13 is composed of a lower support plate 131 and an upper support plate 132. The bottom of the lower support plate 131 is clamped and welded on the trim plate 16, and the upper support plate 132 is welded on the lower support plate 131. The upper support plate 132 is arranged on both sides. There is a reserved hole 133 for snapping into the upper main bar 22 of the reinforced concrete beam 2 .

The lower main rib and the upper main rib 22 are respectively locked and fixed with the A-type connector 14 and the B-type connector 13 through nuts.

The construction method of this prefabricated round concrete-filled steel tube special-shaped column corner column node connection structure is carried out according to the following steps:

(1) Factory-produced prefabricated components: round concrete-filled steel tube column 15 and its poured reinforced concrete special-shaped column corner column 1, semi-prefabricated composite beam reinforced concrete beam 3 are prefabricated in the factory, and then transported to the construction site.

(2) Construction of the connection node between the column and the beam: place the lower main reinforcement 21 of the reinforced concrete beam 3 in the reserved groove 143 of the A-shaped connector 14 of the lower special-shaped column corner column 1, and place the upper main reinforcement 22 in the lower special-shaped column corner column 1 In the reserved hole 133 of the B-type connector 13, adjust the position and distance of the reinforced concrete beam 3, and then lock the nuts on the lower main reinforcement 21 and the upper main reinforcement 22, so that the lower main reinforcement 21 and the upper main reinforcement 22 of the reinforced concrete beam 2 Lock and fix with the A-type connector 14 and the B-type connector 13 respectively; support the post-cast belt and the formwork of the cast-in-place floor 3, lay the steel bars of the cast-in-place floor 3, and then pour the post-cast part of the upper part of the reinforced concrete beam 2 and the floor Concrete, after the cast-in-place concrete reaches a certain strength, the joint construction of the column to column connection is carried out.

(3) Construction of connection joints between columns: put the end of the round concrete-filled steel tube column 15 protruding from the bottom of the special-shaped column corner column 1 on the upper floor into the grouting sleeve 11 on the top of the special-shaped column corner column 1 on the lower floor, and adjust the angle of the special-shaped column corner column 1 on the upper floor. Height and horizontal position and support, and then grouting material is poured into the grouting sleeve 11 on the top of the special-shaped column corner column 1 of the lower floor. After the grouting material reaches a certain strength, a horizontal joint formwork is supported, and high-strength non-shrinkage grouting is poured After the grouting material reaches a certain strength, continue construction.

The above descriptions are only preferred and feasible embodiments of the present invention, and are not intended to limit the scope of rights of the present invention. All equivalent structural changes made by using the description and accompanying drawings of the present invention are included in the scope of rights of the present invention. .

Claims (6)

1. A prefabricated round concrete-filled steel tube special-shaped column corner column node connection structure, including special-shaped column corner column and reinforced concrete beam, is characterized in that: The special-shaped column corner column is a ∟-shaped reinforced concrete prefabricated part. There are circular steel tube concrete columns inside the special-shaped column corner column. The grouting sleeve constitutes the connection node between columns; The reinforced concrete beam is a semi-prefabricated composite beam, the lower part is factory prefabricated, and the upper part is the post-cast part connected with part of the cast-in-place floor; A-type connectors are welded on the outer arm of the steel pipe of the circular concrete-filled steel pipe column at the joint between the corner column of the special-shaped column and the reinforced concrete beam, and the B-type connector is welded on the upper panel between the circular steel pipe concrete columns. The A-type connector is fixedly connected, the upper main reinforcement of the reinforced concrete beam is fixedly connected with the B-type connector, and the A-type connector and the B-type connector constitute the connection node between the column and the beam. 2. The prefabricated round concrete-filled steel tube special-shaped column corner column node connection structure according to claim 1, characterized in that three round concrete-filled steel tube columns are arranged in the corner column of the special-shaped column, one at the top of the corner, and the connection positions between the column and the beams on both sides are respectively set One. 3. The joint connection structure of prefabricated round concrete-filled steel tube special-shaped column corner columns according to claim 1, characterized in that: the panel is processed and formed by steel plate, the thickness and length of the panel are determined according to the distance between the circular concrete-filled steel tube columns, and the panel is vertical It is welded and fixed to the outer arm of the steel tube of the circular steel tube concrete column arranged at both ends. 4. The prefabricated circular concrete-filled steel tube special-shaped column corner column node connection structure according to claim 1, characterized in that: A-type connectors are processed and formed by steel plates, including a bottom plate and a supporting vertical plate, and the supporting vertical plate is welded to the outer end of the bottom plate , the inner end of the bottom plate is connected with the outer arm of the circular steel pipe concrete column through an arc welding surface, and the supporting vertical plate is provided with a reserved groove for snapping into the lower main reinforcement of the reinforced concrete beam. 5. The prefabricated round concrete-filled steel tube special-shaped column corner column node connection structure according to claim 1, characterized in that: the B-type connector is processed and formed by a steel plate, including a lower support plate and an upper support plate, and the bottom of the lower support plate is clamped and welded On the panel, the upper support plate is welded to the lower support plate, and the two sides of the upper support plate are provided with reserved holes for snapping into the upper main reinforcement of the reinforced concrete beam. 6. The prefabricated round concrete-filled steel tube special-shaped column corner column node connection structure according to claim 1, characterized in that: the ends of the lower main reinforcement and the upper main reinforcement of the reinforced concrete beam are provided with a certain distance buckle, and the assembly nut is mounted on the buckle , the lower main reinforcement and the upper main reinforcement are respectively locked and fixed with the A-type connector and the B-type connector through nuts.