CN108589919A - Outer ring plate type beam column connecting device and assembly type steel frame connecting method - Google Patents

Abstract

The invention proposes an outer ring plate type beam-column connection device and an assembled steel frame connection method, which belong to the technical field of construction engineering. The outer ring plate type beam-column connection device is all connected by high-strength bolts during on-site assembly without welding, which can effectively avoid Influence of uncontrollable factors in the welding process on the mechanical properties of the joint. The outer ring plate type beam-column connection device includes a square steel pipe column, an H-shaped steel beam and a force transmission component; the H-shaped steel beam includes an upper flange plate and a lower flange plate, and a Web plate; the force transmission component includes two ring plates sleeved on the outer circumference of the square steel pipe column, and the ring plates are welded to the outer wall of the square steel pipe column. Among them, the upper ring plate is the upper ring plate, and the lower ring plate is the lower ring plate ;The upper ring plate and the upper flange plate are connected by high-strength bolts, and the lower ring plate and the lower flange plate are connected by high-strength bolts; The plates are connected by high-strength bolts.

Description

Outer ring plate beam-to-column connection device and assembly steel frame connection method

technical field

The invention belongs to the technical field of construction engineering, and relates to an assembled steel frame beam-column connection device, in particular to an outer ring plate type beam-column connection device and an assembled steel frame connection method.

Background technique

In the prefabricated steel frame structure, the beam-column connection plays an important role in transmitting axial force, shear force and bending moment, and its connection performance directly affects the performance of the overall structure, which is an important part of the steel frame structure.

At present, the common connection forms of steel frame square steel pipe columns and H-shaped steel beam connection joints mainly include inner diaphragm connection, diaphragm through connection and outer ring plate connection. Among them, the outer ring plate connection is usually to weld a ring plate with a thickness not less than the flange of the steel beam at the position where the outer wall of the steel pipe column is flush with the upper and lower flanges of the steel beam. The upper and lower flanges of the steel beam and the ring plate pass through Butt weld connection, steel beam web is connected by high-strength bolts. For example: Patent CN106168055A discloses a rectangular steel tube concrete column-H-shaped steel beam flat flange outer rib ring plate joint, which welds the upper outer ring plate, lower outer ring plate and web connection plate outside the rectangular steel tube concrete column, and the web connection The plate and the H-shaped steel beam are connected by high-strength bolts. The upper flange of the H-shaped steel beam is welded to the upper outer ring plate by groove welding, and the lower flange of the H-shaped steel beam is welded to the lower outer ring plate by groove welding. However, this type of connection requires a lot of welding work during on-site construction, the quality of the welded seam is not easy to guarantee, and the degree of assembly is low. Moreover, under the action of strong earthquakes, the potential weld seam defects are very easy to cause the joints to be welded. The brittle failure of the seam will lead to the failure of the joint.

Therefore, how to improve the outer ring plate connection method of the prefabricated steel frame beam-column to realize on-site assembly without welding, so as to avoid the influence of uncontrollable factors in the welding process on the mechanical properties of the connection joints, is a technology that needs to be solved urgently. question.

Contents of the invention

The present invention aims at the deficiencies in the above-mentioned existing outer ring plate type beam-column connection structure, and proposes an outer ring plate type beam-column connection device and an assembled steel frame connection method, which are all connected by high-strength bolts during on-site assembly without welding, and can effectively It avoids the influence of uncontrollable factors in the welding process on the mechanical properties of the connecting nodes, and the connecting nodes have strong integrity and superior mechanical properties.

In order to achieve the above object, the technical scheme adopted in the present invention is:

The outer ring plate type beam-column connection device includes a square steel pipe column, an H-shaped steel beam and a force transmission component connected between the square steel pipe column and the H-shaped steel beam; the H-shaped steel beam includes an upper flange arranged in parallel plate and the lower flange plate, there is a web between the upper flange plate and the lower flange plate; the force transmission component includes two ring plates sleeved on the outer periphery of the square steel pipe column, and the ring welded to the outer wall of the square steel pipe column, wherein the upper ring plate is the upper ring plate, and the lower ring plate is the lower ring plate; the upper ring plate and the upper flange plate are connected by high-strength bolts, The lower ring plate and the lower flange plate are connected by high-strength bolts; the force transmission component also includes a web splicing plate welded to the outer wall of the square steel pipe column, and the web splicing plate and the web are connected by high-strength bolts.

Preferably, the middle part of the ring plate is provided with a pipe column hole that can pass through the square steel pipe column, and the edge of the pipe column hole is fixedly connected with the outer wall of the square steel pipe column by surrounding welding.

Preferably, the ring plate has a connecting portion for connecting with the H-shaped steel beam.

Preferably, the number of the connecting parts is two or three or four.

Preferably, two adjacent connecting parts are connected in a circular arc transition.

Preferably, the connecting portion is provided with a plurality of first bolt holes that can pass through the high-strength bolts; the end of the upper flange plate and the end of the lower flange plate correspond to the first bolt holes The hole is provided with a plurality of second bolt holes that can pass through the high-strength bolts.

As a preference, the end of the web is provided with a plurality of third bolt holes that can pass through the high-strength bolts, and the web splicing plate is provided with a plurality of holes that can pass through the high-strength bolts corresponding to the third bolt holes. Fourth bolt hole for high-strength bolts.

Preferably, the web splicing plate is fixedly connected to the outer wall of the square steel pipe column through double-sided fillet welding.

Preferably, the web splice plate is a rectangular plate or a T-shaped plate.

The present invention also provides a connection method for connecting assembled steel frames using the outer ring plate beam-column connection device described in any one of the above technical solutions, including the following steps:

In the prefabrication factory, the upper ring plate, lower ring plate and web splicing plate are welded to the outer wall of the square steel pipe column;

Hoist the square steel pipe column after welding the upper ring plate, lower ring plate and web splicing plate to the predetermined installation position and fix it;

Hoist the H-shaped steel beams to the predetermined installation position. After hoisting, there are two H-shaped steel beams to be connected on the side of the square steel pipe column as a corner column, and three H-shaped steel beams to be connected on the side to be connected as a side column. There are four H-shaped steel beams to be connected on the side of the square steel pipe column used as the central column; the specific state of hoisting the H-shaped steel beams to the predetermined installation position is: the two ends of the H-shaped steel beams are respectively inserted into the two sides Between the upper ring plate and the lower ring plate welded by the square steel pipe column, and the two ends of the web plate of the H-shaped steel beam are attached to the web splicing plates welded by the square steel pipe column on both sides;

Fasten the upper flange plate of the H-shaped steel beam to the corresponding upper ring plate with high-strength bolts, fasten the lower flange plate of the H-shaped steel beam to the corresponding lower ring plate with high-strength bolts, and fasten the H-shaped steel beam with high-strength bolts. The web of the steel beam is fastened with the corresponding web splicing plate to complete the assembly.

Compared with prior art, advantage and beneficial effect of the present invention are:

1. In the outer ring plate type beam-column connection device provided by the present invention, the upper ring plate, lower ring plate and web splicing plate can all be pre-welded on the square steel pipe column in the factory. During on-site assembly, only high-strength Bolts are connected without welding, which can effectively avoid the influence of uncontrollable factors in the welding process on the mechanical properties of the connected joints;

2. The outer ring plate type beam-column connection device provided by the present invention has clear force transmission, strong integrity of connection nodes, high rigidity, high bearing capacity, and superior mechanical properties;

3. The outer ring plate type beam-column connecting device provided by the present invention is easy to install, low in production cost, simple and beautiful.

Description of drawings

Fig. 1 is the front view of the outer ring plate type beam-column connecting device provided by the embodiment of the present invention;

Fig. 2 is a top view of the outer ring plate type beam-column connection device provided by the embodiment of the present invention;

Fig. 3 is a structural schematic diagram of a ring plate used for corner column connection provided by an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of a ring plate used for side column connection provided by an embodiment of the present invention;

Fig. 5 is a schematic structural view of the ring plate used for the connection of the center column provided by the embodiment of the present invention;

Fig. 6 is the structural representation of the H-shaped steel beam provided by the embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a web splicing plate provided by an embodiment of the present invention;

Fig. 8 is a schematic structural view of the assembled steel frame connected by the outer ring plate type beam-column connection device provided by the embodiment of the present invention;

Fig. 9 is a schematic diagram of the connection structure at the corner post in the assembled steel frame after connection;

Fig. 10 is a schematic diagram of the connection structure at the side column in the assembled steel frame after connection;

Fig. 11 is a schematic diagram of the connection structure at the middle column of the assembled steel frame after connection;

In the above figures: 1. Square steel pipe column; 2. H-shaped steel beam; 21. Upper flange plate; 22. Lower flange plate; 23. Web plate; 3. Ring plate; 31. Upper ring plate; 32. Lower ring plate; 33. Pipe column hole; 34. Connecting part; 4. Web splicing plate; 5. High-strength bolt; 6. First bolt hole; 7. Second bolt hole; 8. Third bolt hole; 9. Fourth bolt hole.

Detailed ways

In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it should be noted that the vertical direction refers to the up and down direction in Fig. 1; The orientation or positional relationship is based on the positional relationship shown in Figure 1, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

As shown in Figures 1 and 2, the present invention relates to an outer ring plate type beam-to-column connection device, which includes a square steel tube column 1, an H-shaped steel beam 2 and a transmission tube connected between the square steel tube column 1 and the H-shaped steel beam 2. Force assembly; the H-shaped steel beam 2 includes an upper flange plate 21 and a lower flange plate 22 arranged in parallel, and a web 23 is provided between the upper flange plate 21 and the lower flange plate 22; the force transmission assembly includes a set of The two ring plates 3 on the outer periphery of the square steel pipe column 1 are welded to the outer wall of the square steel pipe column 1, and the two ring plates 3 are arranged parallel to each other, wherein the upper ring plate 3 is the upper ring plate 31, and the lower ring plate Plate 3 is the lower ring plate 32; the lower surface of the upper ring plate 31 is against the upper surface of the upper flange plate 21, and the upper ring plate 31 and the upper flange plate 21 are connected by high-strength bolts 5; the upper surface of the lower ring plate 32 and the The lower surface of the lower flange plate 22 is offset, and the lower ring plate 32 and the lower flange plate 22 are connected by high-strength bolts 5; The splicing plate 4 and the web 23 are connected by high-strength bolts 5 .

In the above-mentioned outer ring plate type beam-column connection device, the upper ring plate 31, the lower ring plate 32 and the web splicing plate 4 can be pre-welded on the square steel pipe column 1 in the factory. Bolts 5 connect and fasten the upper ring plate 31 and the upper flange plate 21 of the H-shaped steel beam 2, connect and fasten the lower ring plate 32 and the lower flange plate 22 of the H-shaped steel beam 2 through high-strength bolts 5, and connect and fasten the lower ring plate 32 with the lower flange plate 22 of the H-shaped steel beam 2 through high-strength bolts The bolts 5 fasten the web splicing plate 4 and the web 23 of the H-shaped steel beam 2 to form a stable connection node without welding, which can effectively avoid the influence of uncontrollable factors in the welding process on the mechanical properties of the connection node. Moreover, the force transmission of this outer ring plate type beam-to-column connection device is clear. Specifically, the tension transmitted by the upper flange plate 21 and the lower flange plate 22 of the H-shaped steel beam 2 passes through the upper ring plate 31 and the lower ring plate 32. Transmitted to the side wall of the square steel pipe column 1, the horizontal shear force of the connecting node is jointly borne by the upper ring plate 31, the lower ring plate 32 and the side wall of the square steel pipe column 1, and the web splicing plate 4 is borne by the H-shaped steel beam 2 Shear forces transmitted at the beam ends. Therefore, this outer ring slab-type beam-column connection device is easy to achieve the design purpose of strong columns and weak beams, and strong nodes and weak members. The connection nodes have strong integrity, high rigidity, high bearing capacity, and superior mechanical properties.

In order to ensure that the ring plate 3 (that is, the upper ring plate 31 and the lower ring plate 32) can be firmly connected to the outer circumference of the square steel pipe column 1, as a preference, as shown in Figures 3-5, the middle part of the ring plate 3 is equipped with a Through the pipe column hole 33 of the square steel pipe column 1, the edge of the pipe column hole 33 is fixedly connected with the outer wall of the square steel pipe column 1 through surrounding welding. The way of surrounding welding can ensure that the ring plate 3 is firmly connected with the square steel pipe column 1. It is beneficial to improve the mechanical properties of the entire connection node. It should be noted that the shape of the pipe column hole 33 matches the cross-sectional shape of the square steel pipe column 1 , and in this embodiment, the shape of the pipe column hole 33 is specifically square.

Further, as shown in FIGS. 3-5 , the ring plate 3 has a connecting portion 34 for connecting with the H-shaped steel beam 2, and the connecting portion 34 is provided with a plurality of first bolt holes 6 through which high-strength bolts 5 can pass; As shown in Figure 6, the end of the upper flange plate 21 of the H-shaped steel beam 2 and the end of the lower flange plate 22 are provided with a plurality of second bolts that can pass through high-strength bolts 5 corresponding to the first bolt holes 6 Hole 7. It should be noted that the first bolt hole 6 and the second bolt hole 7 are coaxially arranged so that the high-strength bolt 5 passes through the first bolt hole 6 and the second bolt hole 7, and then the H-shaped steel The upper flange plate 21 and the lower flange plate 22 of the beam 2 are fastened together with the upper ring plate 31 and the lower ring plate 32 respectively.

Since in the fabricated steel frame structure, the square steel pipe column 1 may be located at the corner column, side column or center column, therefore, according to the number of H-shaped steel beams 2 to be connected around the square steel pipe column 1, the connection of the ring plate 3 is set correspondingly. The number of parts 34, the connecting part 34 of the ring plate 3 can be multiple. Specifically, as shown in Figure 3, when the square steel pipe column 1 is used as a corner column, there are two connecting parts 34 of the ring plate 3, and the two connecting parts 34 are located on adjacent sides of the column hole 33; as shown in Figure 4, When the square steel pipe column 1 is used as a side column, there are three connecting parts 34 of the ring plate 3, and the three connecting parts 34 surround the three sides of the column hole 33; as shown in Figure 5, when the square steel pipe column 1 is used as a center column, the ring There are four connecting parts 34 of the plate 3 , and the four connecting parts 34 surround the periphery of the column hole 33 .

Further, as shown in FIGS. 3-5 , two adjacent connecting parts 34 are connected in a circular arc transition, which saves construction space and makes the force transmission clearer. It should be noted that the length of the connecting portion 34 can be determined according to the number of high-strength bolts 5 .

As shown in Figure 6, the end of the web 23 of the H-shaped steel beam 2 is provided with a plurality of third bolt holes 8 that can pass through the high-strength bolts 5; as shown in Figure 7, the web splicing plate 4 corresponds to the third The bolt holes 8 are provided with a plurality of fourth bolt holes 9 through which high-strength bolts 5 can pass. It should be noted that the third bolt hole 8 and the fourth bolt hole 9 are coaxially arranged so that the high-strength bolt 5 passes through the third bolt hole 8 and the fourth bolt hole 9, and then the H-shaped steel The web 23 of the beam 2 is fastened together with the web splice plate 4 .

In order to ensure that the web splicing plate 4 can be firmly connected to the outer circumference of the square steel pipe column 1, as a preferred method, the web splicing plate 4 is fixedly connected to the outer wall of the square steel pipe column 1 through double-sided fillet welding, and the double-sided fillet welding can be used. Ensuring that the web splicing plate 4 is firmly connected to the square steel pipe column 1 is conducive to improving the mechanical properties of the entire connection node. It should be noted that, in this embodiment, as shown in FIG. 7 , the web splicing plate 4 is a rectangular plate. It can be understood that the web splicing plate 4 can also be a T-shaped plate or other shaped plates, as long as it is convenient to connect with the web 23 of the H-shaped steel beam 2 .

In addition, it should be noted that, as shown in FIG. 2 , the square steel pipe column 1 is a hollow steel pipe column and is a continuous column without other devices inside. It can be a finished steel pipe without other processing.

The present invention also provides a connection method for connecting assembled steel frames using the outer ring plate beam-column connection device described in any one of the above embodiments, including the following steps:

S1: In the prefabrication factory, the upper ring plate 31 , the lower ring plate 32 and the web splicing plate 4 are welded to the outer wall of the square steel pipe column 1 . Specifically, for the square steel pipe column 1 as the corner column of the assembled steel frame, when welding, a web splicing plate 4 is respectively welded on the outer walls of the adjacent two sides of the square steel pipe column 1, and the welded upper ring plate 31 and lower ring plate 32 are both It is the ring plate 3 with two connecting parts 34, and the two connecting parts 34 of the ring plate 3 are respectively in the same direction as the two web splicing plates 4 during welding; At the same time, a web splicing plate 4 is respectively welded on the three outer walls of the square steel pipe column 1, and the welded upper ring plate 31 and the lower ring plate 32 are both ring plates 3 with three connecting parts 34. When welding, the three ring plates 3 The connecting parts 34 are respectively in the same direction as the three web splicing plates 4; for the square steel pipe column 1 as the middle column of the assembled steel frame, when welding, one web splicing plate 4 is respectively welded on the four outer walls of the square steel pipe column 1, and the welded Both the upper ring plate 31 and the lower ring plate 32 are ring plates 3 with four connecting portions 34 , and the four connecting portions 34 of the ring plate 3 are respectively in the same direction as the four web splicing plates 4 during welding. In this step, it should be noted that when the ring plate 3 is welded, the beveled complete welding method is adopted, and the square steel pipe column 1 is passed through the pipe column hole 33 of the ring plate 3, and the edge of the pipe column hole 33 is 1 The outer wall is less than 10mm, and the edge of the pipe column hole 33 is fixedly connected with the outer wall of the square steel pipe column 1 through surrounding welding; the web splicing plate 4 is welded in the form of double-sided fillet welding.

S2: Lift the square steel pipe column 1 after welding the upper ring plate 31, the lower ring plate 32 and the web splicing plate 4 to the predetermined installation position and fix it. It should be noted that when the square steel pipe column 1 is fixed, the square steel pipe column 1 is placed vertically.

S3: Hoist the H-shaped steel beam 2 to the predetermined installation position. After hoisting, there are two H-shaped steel beams 2 to be connected on the side to be connected of the square steel pipe column 1 as the corner column, and the to-be-connected side of the square steel pipe column 1 as the side column There are three H-shaped steel beams 2 to be connected on the side, and four H-shaped steel beams 2 to be connected on the side of the square steel pipe column 1 as the central column; the specific state of the H-shaped steel beams 2 hoisted to the predetermined installation position is: H The two ends of the shaped steel beam 2 are respectively inserted between the upper ring plate 31 and the lower ring plate 32 welded by the steel pipe columns 1 on both sides, and the two ends of the web 23 of the H-shaped steel beam 2 are welded to the steel pipe columns 1 on both sides. The web splicing plates 4 are fitted together.

S4: Fasten the upper flange plate 21 of the H-shaped steel beam 2 to the corresponding upper ring plate 31 through high-strength bolts 5, and connect the lower flange plate 22 of the H-shaped steel beam 2 to the corresponding lower ring plate through high-strength bolts 5 32 fastening, the web 23 of the H-shaped steel beam 2 and the corresponding web splicing plate 4 are fastened by high-strength bolts 5 to complete the assembly. The structure of the assembled steel frame after connection is shown in Figure 8, among them, the structure of the corner column connection node is shown in Figure 9, the structure of the side column connection node is shown in Figure 10, and the structure of the center column connection node is shown in Figure 11 Show.

Claims (10)

1. Outer ring plate type beam-column connection device, including a square steel pipe column (1), an H-shaped steel beam (2) and a force transmission component connected between the square steel pipe column (1) and the H-shaped steel beam (2) ; The H-shaped steel beam (2) includes an upper flange plate (21) and a lower flange plate (22) arranged in parallel, and the upper flange plate (21) and the lower flange plate (22) are arranged There is a web (23); it is characterized in that: the force transmission component includes two ring plates (3) sleeved on the outer periphery of the square steel pipe column (1), and the ring plates (3) are welded to the square steel pipe column (1). The outer wall of a steel pipe column (1), wherein the upper ring plate (3) is an upper ring plate (31), and the lower ring plate (3) is a lower ring plate (32); the upper ring plate (31) is connected with the upper flange plate (21) by high-strength bolts (5), and the lower ring plate (32) is connected with the lower flange plate (22) by high-strength bolts (5); the force transmission assembly also includes The web splicing plate (4) welded to the outer wall of the square steel pipe column (1), the web splicing plate (4) and the web (23) are connected by high-strength bolts (5). 2. The outer ring plate type beam-column connection device according to claim 1, characterized in that: the middle part of the ring plate (3) is provided with a column hole (33) that can pass through the square steel tube column (1) , the edge of the column hole (33) is fixedly connected with the outer wall of the square steel column (1) by surrounding welding. 3. The outer ring plate type beam-to-column connection device according to claim 1 or 2, characterized in that: the ring plate (3) has a connecting portion (34) for connecting with the H-shaped steel beam (2) . 4. The outer ring plate type beam-to-column connection device according to claim 3, characterized in that: the number of the connection parts (34) is two or three or four. 5. The outer ring plate type beam-to-column connection device according to claim 4, characterized in that two adjacent connecting parts (34) are connected in a circular arc transition. 6. The outer ring plate type beam-to-column connection device according to claim 3, characterized in that: the connection part (34) is provided with a plurality of first bolt holes (6) that can pass through the high-strength bolts (5) ; The end of the upper flange plate (21) and the end of the lower flange plate (22) are provided with a plurality of high-strength bolts (5) that can pass through the first bolt hole (6) ) of the second bolt hole (7). 7. The outer ring plate type beam-to-column connection device according to claim 1 or 6, characterized in that: the end of the web (23) is provided with a plurality of third bolts (5) that can pass through the high-strength bolts (5). Bolt holes (8), the web splicing plate (4) is provided with a plurality of fourth bolt holes (9) corresponding to the third bolt holes (8) that can pass through the high-strength bolts (5). 8. The outer ring plate type beam-column connection device according to claim 1, characterized in that: the web splicing plate (4) is fixedly connected to the outer wall of the square steel pipe column (1) by double-sided fillet welding. 9. The outer ring plate type beam-to-column connection device according to claim 1 or 8, characterized in that: the web splicing plate (4) is a rectangular plate or a T-shaped plate. 10. The connection method for connecting the assembled steel frame using the outer ring plate type beam-column connection device according to any one of claims 1-9, characterized in that it comprises the following steps: In the prefabrication factory, the upper ring plate (31), the lower ring plate (32) and the web splicing plate (4) are welded to the outer wall of the square steel pipe column (1); hoisting the square steel pipe column (1) after welding the upper ring plate (31), the lower ring plate (32) and the web splicing plate (4) to the predetermined installation position and fixing it; Hoist the H-shaped steel beam (2) to the predetermined installation position. After hoisting, there are two H-shaped steel beams (2) to be connected on the side to be connected of the square steel pipe column (1) as the corner column, and the square steel pipe column as the side column There are three H-shaped steel beams (2) to be connected on the side to be connected of (1), and four H-shaped steel beams (2) to be connected are arranged on the side to be connected as the square steel pipe column (1) of the center column; (2) The specific state of hoisting to the predetermined installation position is: the two ends of the H-shaped steel beam (2) are respectively inserted between the upper ring plate (31) and the lower ring plate (32) welded by the steel pipe columns (1) on both sides , and the two ends of the web (23) of the H-shaped steel beam (2) fit together with the web splicing plates (4) welded by the steel pipe columns (1) on both sides; The upper flange plate (21) of the H-shaped steel beam (2) and the corresponding upper ring plate (31) are fastened by high-strength bolts (5), and the lower flange plate (21) of the H-shaped steel beam (2) is fastened by high-strength bolts (5). The flange plate (22) is fastened to the corresponding lower ring plate (32), and the web (23) of the H-shaped steel beam (2) is fastened to the corresponding web splicing plate (4) by high-strength bolts (5) , to complete the assembly.