CN106894523B - A connection node between a rectangular steel tube concrete column and a steel concrete beam - Google Patents

Abstract

A connecting node of a rectangular steel pipe concrete column and a steel reinforced concrete beam comprises the rectangular steel pipe concrete column, the steel reinforced concrete beam, a steel connecting section, a pair-penetrating bolt, a bolt and a straight thread connecting sleeve; the steel connecting section is arranged between the rectangular steel pipe concrete column and the steel section concrete beam and comprises steel sections, column section end plates at two ends of the steel sections and beam section end plates; two ends of the opposite-penetrating bolt penetrate out of two sides of the rectangular concrete-filled steel tube column and penetrate through column section end plates of the steel connecting sections to connect the rectangular concrete-filled steel tube column with the steel connecting sections on two sides; the section steel concrete beam comprises a section steel beam, longitudinal stress steel bars and end plates welded at the end parts of the section steel beam, and the end plates are connected with beam section end plates of the steel connecting section by bolts; the end part of the longitudinal stress reinforcing steel bar is provided with external threads, and the longitudinal stress reinforcing steel bar sequentially penetrates through the end plate and the beam section end plate, is fixed by the straight thread connecting sleeve, and connects the steel connecting section with the steel reinforced concrete beam. The node has the advantages of simple structure, good integrity, definite force transmission, safety, reliability and convenient construction.

Description

A connection node between a rectangular steel tube concrete column and a steel concrete beam

technical field

The invention belongs to the field of civil engineering and relates to a connection node between a rectangular steel pipe concrete column and a steel concrete beam.

Background technique

Rectangular steel pipe concrete column is a vertical load-bearing member in which concrete is poured in rectangular steel pipes and the steel pipe and concrete in the pipe share the load. It has the advantages of high bearing capacity, good seismic performance, simple joint form, strong durability, and convenient construction; Beams are flexural members added to the original reinforced concrete beams, columns and other members, which have the advantages of high bearing capacity and good seismic performance. With the development of our country's social economy, the performance requirements of modern buildings are gradually increasing, and more and more rectangular steel tube concrete columns and steel concrete beams are used in projects.

At present, the joint design recommended by my country's "Technical Regulations for Rectangular Steel Tube Concrete Structures" (CECS59: 2004) is only the connection between the rectangular steel tube concrete column and the steel beam and the connection between the rectangular steel tube concrete column and the cast-in-place reinforced concrete beam, and there is no rectangular steel tube concrete Nodal connection of columns and SRC beams.

Contents of the invention

The object of the present invention is to provide a connection node between a rectangular steel tube concrete column and a steel concrete beam, which has a simple structure, good integrity, clear force transmission, safety and reliability, and convenient construction.

In order to achieve the above object, the present invention adopts the following technical solutions: a connection node between a rectangular concrete-filled steel tube column and a steel concrete beam, including a rectangular steel tube concrete column, a steel concrete beam, a steel connecting section, a cross bolt, a bolt and a straight thread connection sleeve tube; the steel connecting section is arranged between the rectangular concrete-filled steel pipe column and the steel concrete beam, including the steel section and the column end plate and the beam section end plate arranged at both ends of the steel; The side pierces through the column end plate of the steel connecting section, and connects the rectangular steel tube concrete column with the steel connecting sections on both sides;

The profiled steel concrete beam comprises a profiled steel beam, a longitudinally stressed steel bar and an end plate welded at the end of the profiled steel beam, and the end plate is connected to the beam segment end plate of the steel connecting section by the described bolt, and the end plate of the longitudinally stressed steel bar The end is provided with external threads, and the end of the longitudinally stressed steel bar passes through the end plate and the end plate of the beam section in turn, and is fixed by a straight thread connecting sleeve to connect the steel connecting section with the steel concrete beam.

Preferably, the section size of the end plate on the steel concrete beam is equal to the section size of the steel concrete beam.

Preferably, the cross-sectional dimensions of the column end plate and the beam end plate in the steel connecting section are equal, and the cross-sectional dimension is equal to the cross-sectional dimension of the steel concrete beam.

Preferably, the cross-sectional shape of the shaped steel of the steel connecting section is the same as that of the shaped steel beam, which is H-shaped steel or I-shaped steel.

Preferably, the longitudinally stressed steel bars are steel bars with strength grades of HPB300, HRB335, HRB400 or HRB500.

The bolts described are high-strength bolts.

The external threads at the ends of the longitudinally stressed steel bars are in the same direction.

The present invention has the following beneficial effects:

1. Using the steel connection section as the splicing member and the cross-piercing bolt as the fastener ensures the integrity of the rectangular steel tube concrete column and can obtain good mechanical properties.

2. There are both shaped steel and steel bars at the end of the steel concrete beam, and the steel bars are dense, which brings great difficulties to the construction. The longitudinally stressed steel bar in the steel concrete beam can be passed through the remaining reserved hole on the end plate, and fixed by a straight thread connection sleeve, so as to meet the anchoring requirements of the steel bar and reduce the difficulty of construction.

3. During the construction process, the production of the steel connection section and the welding of the steel-concrete beam-shaped steel end plate are carried out in the factory. The rectangular steel pipe concrete and the steel link are connected by cross-piercing bolts, and the steel connection section and the steel-concrete beam are connected by high-strength bolts. Connection without on-site welding, the construction efficiency is greatly improved.

Description of drawings

Fig. 1 is the overall assembled drawing of the present invention;

Fig. 2 is a side view of the present invention;

Fig. 3 is A-A sectional view of the present invention;

Fig. 4 is B-B sectional view of the present invention;

Markings in the figure: 1. Rectangular steel pipe concrete column, 101. Rectangular steel pipe, 2. Steel concrete beam, 201. Steel beam, 202. Longitudinal force reinforcement, 203. End plate, 3. Steel connection section, 301. Column section End plate, 302, beam section end plate, 303, section steel, 4, cross-through bolt, 5, bolt, 6, straight thread connecting sleeve.

Detailed ways

The technical solutions of the present invention will be further described through specific embodiments below in conjunction with the accompanying drawings.

As shown in the figure, a connection node between a rectangular steel pipe concrete column and a steel concrete beam, including a rectangular steel pipe concrete column 1, a steel concrete beam 2, a steel connection section 3, cross-piercing bolts 4, bolts 5 and straight thread connection sleeves 6 , the bolts 5 are preferably high-strength bolts.

The rectangular steel pipe concrete column 1 includes a rectangular steel pipe 101 and the concrete poured in the rectangular steel pipe 101, and holes are arranged on the rectangular steel pipe 101; The end plate 203 at the end of the beam 201 is provided with a hole in the end plate 203, and beam concrete is poured outside the shaped steel beam 201.

The steel connection section 3 includes a column end plate 301, a beam end plate 302 and a section steel 303, the column section end plate 301 and the beam section end plate 302 are respectively welded to the two ends of the section steel 303, and on the column section end plate 301 and the beam section end plate 302 Holes are set individually.

The cross-piercing bolts 4 pass through the rectangular steel pipe concrete column 1, and after the two ends of the cross-piercing bolts 4 pass through the holes provided on the rectangular steel pipe 101, they respectively pass through the steel connecting sections 3 on both sides of the rectangular steel pipe concrete column 1. The hole on the end plate 301 of the column section connects the rectangular steel tube concrete column 1 with the steel connecting sections 3 on both sides.

The cross-sectional size of the end plate 203 on the steel concrete beam 2 is equal to the cross-sectional size of the steel concrete beam 2, and the end plate 203 is connected with the beam section end plate 302 of the steel connecting section 3 by high-strength bolts, and the longitudinally stressed steel bar 202 adopts HPB300, Steel bars of HRB335, HRB400 or HRB500 strength grades, and both ends are provided with external threads in the same direction. The ends of the longitudinally stressed steel bars 202 pass through the remaining holes on the end plate 203 and the end plate 302 of the beam section in turn, and the sleeves are connected by straight threads 6 is fixed to realize the connection between the steel connecting section 3 and the steel concrete beam 2.

Further, the cross-sectional dimensions of the column end plate 301 and the beam end plate 302 in the steel connecting section 3 are equal, and the cross-sectional dimension is equal to the cross-sectional dimension of the steel concrete beam 2 .

Further, the cross-sectional shape of the shaped steel 301 of the steel connecting section 3 is the same as that of the shaped steel beam 201, which is H-shaped steel or I-shaped steel.

The construction method of the present embodiment is as follows:

(1) Weld the end plate 203 at the end of the steel beam 201 in the factory in advance, and reserve bolt holes on the end plate 203, and reserve bolt holes on the opposite pipe wall of the rectangular steel pipe 101; In the connection section 3, bolt holes are reserved on the column section end plate 301 and the beam section end plate 302 at both ends of the steel connection section 3.

(2) During on-site assembly, the steel connecting section 3 is connected to the rectangular steel pipe 101 through the cross-piercing bolts 4, and after the shaped steel beam 201 is hoisted in place, the steel connecting section 3 is connected to the shaped steel beam 201 through high-strength bolts.

(3) The longitudinal force-bearing reinforcement 202 in the steel concrete beam 2 is blanked and placed in place, passed through the remaining reserved holes on the end plate 203 and the end plate 302 of the beam section, fixed with the straight thread connecting sleeve 6, and then the stirrups are tied .

(4) The concrete of the steel concrete beam 2 and the concrete in the rectangular steel tube 101 are poured separately, so that the reliable connection between the steel concrete beam 2 and the rectangular steel tube concrete column 1 is realized through this node.

Claims (5)

1. A connection node between a rectangular steel pipe concrete column and a steel concrete beam, characterized in that: it includes a rectangular steel pipe concrete column (1), a steel concrete beam (2), a steel connecting section (3), a piercing bolt (4), Bolts (5) and straight thread connection sleeves (6); the steel connection section (3) is set between the rectangular steel pipe concrete column (1) and the steel concrete beam (2), including steel (303) and steel (303 ) at both ends of the column section end plate (301) and beam section end plate (302); the two ends of the piercing bolt (4) pass through both sides of the rectangular steel tube concrete column (1) and pass through the steel connecting section ( 3) The column section end plate (301), which connects the rectangular steel tube concrete column (1) with the steel connecting sections (3) on both sides; The steel concrete beam (2) includes a steel beam (201), a longitudinally stressed steel bar (202) and an end plate (203) welded at the end of the steel beam (201), and the bolt (5) will The end plate (203) is connected with the beam section end plate (302) of the steel connection section (3), the end of the longitudinally stressed reinforcement (202) is provided with external threads, and the ends of the longitudinally stressed reinforcement (202) pass through the end plate in turn (203), the end plate of the beam section (302), and fixed by the straight threaded connecting sleeve (6), connecting the steel connecting section (3) with the steel concrete beam (2); the section size of the end plate (203) is equal to that of the steel concrete The cross-sectional size of the beam (2); the cross-sectional size of the column end plate (301) and the beam end plate (302) in the steel connecting section (3) are equal, and the cross-sectional size is equal to the cross-sectional size of the steel concrete beam (2). 2. the connection node of a kind of rectangular concrete-filled steel tube column and steel concrete beam according to claim 1, is characterized in that: the section shape of the section steel of described steel connection section is identical with the section shape of described section steel steel beam, is H Section steel or I-beam. 3. A connection node between a rectangular concrete-filled steel tube column and a steel-concrete beam according to claim 1, characterized in that: the longitudinally stressed steel bars are steel bars of HPB300, HRB335, HRB400 or HRB500 strength grades. 4. A connection node between a rectangular concrete-filled steel tube column and a steel-concrete beam according to claim 1, characterized in that: said bolts (5) are high-strength bolts. 5. A connection node between a rectangular concrete filled steel tube column and a steel concrete beam according to claim 1, characterized in that: the external threads at the ends of the longitudinally stressed reinforcement bars (202) are in the same direction.

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