Closed-section column-steel beam connecting joint and construction method thereof

Abstract

The invention discloses a closed section column-steel beam connecting joint and a construction method thereof, and belongs to the technical field of steel structure construction. The closed-section column-steel beam connecting joint comprises a steel pipe column, a steel beam and bolts, the steel beam is provided with an end plate, the closed-section column-steel beam connecting joint further comprises a mother plate of a long-strip-shaped structure, connecting holes are formed in the adjacent side walls of the steel pipe column, the mother plate can be inserted into the steel pipe column through the connecting holes, first bolt holes are formed in the mother plate, internal threads are arranged in the first bolt holes, and the first bolt holes are connected with the steel pipe column. First bolt holes are formed in the other side wall of the steel pipe column and the beam end plate, and bolts can penetrate through the first bolt holes to be in threaded connection with the internal threads of the second bolt holes; and the connector is arranged at one end of the mother board and can penetrate through the connecting hole. According to the closed section column-steel beam connecting joint and the construction method thereof, the steel beam connecting joint and the steel pipe column can be connected without welding, and the influence of the quality of a welding seam between the steel beam connecting joint and the steel pipe column on the mechanical property of the steel beam connecting joint is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure construction, and in particular to a closed-section column-steel beam connection node and a construction method thereof. Background Art

[0002] With the advancement of building industrialization and the popularization of green building concepts, steel structures and composite structures are increasingly used in infrastructure construction. At the same time, the performance requirements for building structures are also increasing. Closed section columns (such as round steel tube columns, square steel tube columns, etc.) have been widely used in modern buildings, especially large-span, high-rise buildings and buildings with high seismic requirements, because of their good torsional resistance, high section efficiency and aesthetics. In the building structure system, the steel beam connection node is the key part for transmitting the internal force between the beam and the column. Its performance directly affects the stability, bearing capacity and seismic performance of the entire structure.

[0003] In traditional construction, the connection between steel beam connection nodes and steel pipe columns is mostly carried out by on-site welding. However, this method is not only time-consuming and labor-intensive, but the quality of the welds between the steel beam connection nodes and the steel pipe columns is also difficult to ensure during on-site construction, which will affect the construction progress and the mechanical properties of the steel beam connection nodes. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems in the prior art and provide a closed section column-steel beam connection node and a construction method thereof, which can realize the connection between the steel beam connection node and the steel pipe column without using welding, thereby avoiding the influence of the weld quality between the steel beam connection node and the steel pipe column on the mechanical properties of the steel beam connection node.

[0005] The present invention provides a closed section column-steel beam connection node, comprising a steel pipe column, a steel beam and bolts, wherein the steel beam has a beam end plate, and further comprises:

[0006] The motherboard is a long strip structure, a side wall adjacent to the steel pipe column is provided with a connection hole, the motherboard can be inserted into the steel pipe column through the connection hole, a first bolt hole is provided on the motherboard, the first bolt hole is provided with an internal thread, the other side wall of the steel pipe column and the beam end plate are both provided with a first bolt hole, the bolt can pass through the first bolt hole and be threadedly connected with the internal thread of the second bolt hole;

[0007] A connector is arranged at one end of the motherboard, and the connector can pass through the connecting hole.

[0008] Preferably, the connector is provided with a through hole, and a tenon mechanism is provided in the through hole, and the tenon mechanism is engaged with the socket, and the tenon mechanism includes a sleeve, a hemisphere and a spring, and a card is provided on the hemisphere, and the hemisphere is slidably connected to the through hole through the card, and the sleeve is arranged at the top edge of the through hole, and the sleeve is used to prevent the hemisphere from slipping out of the socket, and the spring is arranged in the through hole, and the spring abuts against the card, and the spring is used to apply an elastic force to the card toward the sleeve, and under the action of the elastic force of the spring, the arc surface of the hemisphere protrudes from the through hole and the card abuts against the sleeve.

[0009] Preferably, the connector is a square structure, the jack is a square hole, and the inner wall of the jack fits with the outer wall of the connector.

[0010] Preferably, the distance between the center position of the first bolt hole on the motherboard and the edge of the motherboard is not less than 1.5 times the diameter of the first bolt hole.

[0011] Preferably, the gap between the inner wall of the connecting hole on the steel pipe column and the outer wall of the motherboard is 1.5-2 mm.

[0012] Preferably, the cross-section of the motherboard and the cross-section of the connecting hole are both elliptical structures.

[0013] Preferably, a gap is left between the end of the motherboard and the connector and the inner wall of the steel pipe column, and after the bolts are tightened, the side wall of the motherboard is in close contact with the inner wall of the steel pipe column.

[0014] The present invention also discloses a method for construction using a closed section column-steel beam connection node, comprising the following steps:

[0015] Carry out construction preparation according to the construction drawings and site conditions, locate the first bolt hole on the steel pipe column and beam end plate, and mark them to determine the installation position;

[0016] Making the first bolt hole and the connection hole on the steel pipe column, and making the first bolt hole on the end plate;

[0017] The steel beam is transported to the installation position so that the first bolt hole on the end plate is aligned with the first bolt hole on the steel pipe column;

[0018] The motherboard is fixed on a special installation tool through a connector. The installation tool is provided with a socket matched with the outer wall of the connector. The installation tool is detachably connected to the outer wall of the connector through the socket. Then, the motherboard is inserted into the steel pipe column through the connection hole using the installation tool;

[0019] After passing the bolts through the bolt holes of the end plate and the steel pipe column in sequence, they are connected to the second bolt holes on the mother plate;

[0020] Remove the installation tool and tighten the bolts to press the mother plate against the inner wall of the steel pipe column to complete the node construction.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: a closed-section column-steel beam connection node of the present invention is achieved by making a first bolt hole and a connection hole on the steel pipe column, and making a first bolt hole on the end plate, and then transporting the steel beam to the installation position, so that the first bolt hole on the end plate is aligned with the first bolt hole of the steel pipe column, fixing the mother plate in the connection hole on the installation tool through a connector, inserting the mother plate into the steel pipe column from the connection hole, and passing the bolts through the bolt holes of the end plate and the steel pipe column in turn, and then connecting them to the second bolt holes on the mother plate, finally removing the installation tool, and tightening the bolts to press the mother plate against the inner wall of the steel pipe column to complete the construction of the entire connection node, so that the entire connection node can realize the bolt connection of the steel beam and the closed-section column without cutting the steel pipe column, thereby realizing the connection between the steel beam connection node and the steel pipe column without using welding, and avoiding the influence of the weld quality between the steel beam connection node and the steel pipe column on the mechanical properties of the steel beam connection node.

[0022] By setting a through hole on the connector and setting a latch mechanism in the socket, combined with the function of the connector, the bolt connection between the steel beam and the closed section column can be achieved without cutting the steel pipe column, which greatly improves the construction efficiency. The first bolt hole on the steel pipe column can be processed and manufactured on site according to the component installation situation, avoiding the problem of the inability to install the bolt due to construction errors. The present invention has a simple structure, a novel and reasonable design, high working reliability, good use effect, and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the process flow of the present invention;

[0024] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0026] Figure 4 It is a right view structural schematic diagram of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the steel pipe column of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the installation tool of the present invention;

[0029] Figure 7 It is a left-side structural schematic diagram of the installation tool of the present invention;

[0030] Figure 8It is a structural schematic diagram of the motherboard of the present invention;

[0031] Fig. 9 It is a right side structural schematic diagram of the motherboard of the present invention;

[0032] Fig.10 It is a structural schematic diagram of the tenon mechanism of the present invention.

[0033] Description of reference numerals:

[0034] 101. Steel pipe column, 102. Steel beam, 103. Bolt, 104. Motherboard, 105. Connection hole, 106. First bolt hole, 107. Second bolt hole, 108. Connector, 109. Installation tool, 110. Socket, 111. Beam end plate, 201. Through hole, 202. Tenon mechanism, 203. Card sleeve, 204. Hemisphere, 205. Spring, 206. Card. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1-Figure 10 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. "Include" or "comprises" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] like Figure 1-Figure 10As shown, the closed-section column-steel beam connection node and the construction method thereof provided by the present invention include a steel pipe column 101, a steel beam 102 and a bolt 103, wherein the steel beam 102 has a beam end plate 111, and further includes: a mother plate 104 and a connector 108, wherein the mother plate 104 is a long strip structure, and a connecting hole 105 is provided on a side wall adjacent to the steel pipe column 101, and the mother plate 104 can be inserted into the steel pipe column 101 through the connecting hole 105, and a first bolt hole 106 is provided on the mother plate 104, and the first bolt hole 106 is provided with an internal thread, and the other side wall of the steel pipe column 101 and the beam end plate 111 are both provided with a first bolt hole 106, and the bolt 103 can pass through the first bolt hole 106 and be threadedly connected with the internal thread of the second bolt hole 107; the connector 108 is provided at one end of the mother plate 104, and the connector 108 can pass through the connecting hole 105.

[0038] The working principle of the above embodiment is briefly described:

[0039] When constructing this connection node, firstly, construction preparation is carried out according to the construction drawings and site conditions, the positions of the first bolt holes 106 on the steel pipe column 101 and the beam end plate 111 are located, and they are marked to determine the installation position, then the first bolt hole 106 and the connection hole 105 are made on the steel pipe column 101, and the first bolt hole 106 is made on the end plate, and then the steel beam 102 is transported to the installation position, so that the first bolt hole 106 on the end plate is aligned with the first bolt hole 106 of the steel pipe column 101, the mother plate 104 is fixed to the connection hole 105 on the installation tool 109 through the connector 108, the mother plate 104 is inserted into the steel pipe column 101 through the connection hole 105, the bolt 103 is passed through the bolt 103 holes of the end plate and the steel pipe column 101 in turn, and then connected to the second bolt hole 107 on the mother plate 104, and finally the installation tool 109 is removed, and the bolt 103 is tightened to press the mother plate 104 against the inner wall of the steel pipe column 101, thereby completing the node construction.

[0040] The closed section column-steel beam connection node and the construction method thereof of the present invention can realize the bolt connection 103 of the steel beam 102 and the closed section column without cutting the steel pipe column 101, thereby realizing the connection between the steel beam connection node and the steel pipe column 101 without using welding, thereby avoiding the influence of the weld quality between the steel beam connection node and the steel pipe column 101 on the mechanical properties of the steel beam connection node.

[0041] On the basis of the above embodiments, in order to improve the stability of the motherboard 104 when the motherboard 104 is installed, the difficulty of installing the motherboard 104 is greatly simplified, and the installation efficiency and accuracy of the motherboard 104 are improved.

[0042] like Figure 6 , Figure 7 and Fig.10As shown, the connector 108 is provided with a through hole 201, and a tenon mechanism 202 is provided in the through hole 201. The tenon mechanism 202 is engaged with the socket 110, and the tenon mechanism 202 includes a sleeve 203, a hemisphere 204 and a spring 205. A card 206 is provided on the hemisphere 204, and the hemisphere 204 is slidably connected to the through hole 201 through the card 206. The sleeve 203 is arranged at the top edge of the through hole 201, and the sleeve 203 is used to prevent the hemisphere 204 from slipping out of the socket 110. The spring 205 is arranged in the through hole 201, and the spring 205 abuts against the card 206. The spring 205 is used to apply an elastic force toward the sleeve 203 to the card 206. Under the action of the elastic force of the spring 205, the arc surface of the hemisphere 204 protrudes from the through hole 201 and the card 206 abuts against the sleeve 203.

[0043] When installing the motherboard 104, the inner wall of the socket 110 of the installation tool 109 first contacts the protruding arc surface of the hemispherical body 204. The pressure exerted by the inner wall of the socket 110 on the arc surface presses the hemispherical body 204 into the through hole 201 on the connector 108. The spring 205 is squeezed by the hemispherical body 204 and the card 206 and contracts. When the socket 110 on the installation tool 109 is connected to the through hole 201 on the connector 108, the elastic force exerted by the spring 205 on the hemispherical body 204 and the card 206 drives The card 206 and the hemisphere 204 move toward the side close to the sleeve 203 until the card 206 abuts against the sleeve 203. The sleeve 203 prevents the hemisphere 204 from slipping out of the through hole 201. The arc surface of the hemisphere 204 protrudes from the through hole 201 and extends into the socket 110, thereby limiting the connector 108 in the socket 110, thereby preventing the motherboard 104 from shaking, improving the stability of the motherboard 104, greatly simplifying the difficulty of installing the motherboard 104, and improving the installation efficiency and accuracy of the motherboard 104.

[0044] As a preferred solution, Figure 8 and Fig. 9 As shown, the connector 108 is a square structure, the plug hole 110 is a square hole, and the inner wall of the plug hole 110 fits with the outer wall of the connector 108 .

[0045] As a preferred solution, Figure 2 , Figure 8 and Fig. 9As shown, the distance between the center position of the first bolt hole 106 on the motherboard 104 and the edge of the motherboard 104 is not less than 1.5 times the diameter of the first bolt hole 106. By setting the center position of the first bolt hole 106 to be not less than 1.5 times the diameter of the first bolt hole 106 from the edge of the motherboard 104, stress concentration at the end of the motherboard 104 and premature shear failure of the first bolt hole 106 under the stress of the bolt 103 can be prevented, thereby ensuring the bearing capacity of the entire connection node.

[0046] As a preferred solution, Figure 5 , Figure 8 and Fig. 9 As shown, the gap between the inner wall of the connection hole 105 on the steel pipe column 101 and the outer wall of the motherboard 104 is 1.5-2 mm. The gap between the inner wall of the connection hole 105 on the steel pipe column 101 and the outer wall of the motherboard 104 is set to 1.5-2 mm, that is, the cross-sectional size of the connection hole 105 is 1.5-2 mm larger than the cross-sectional size of the motherboard 104, which can ensure that the motherboard 104 will not be unable to penetrate due to the connection hole 105 being too small during installation, nor will it affect the mechanical properties of the steel pipe column 101 due to the connection hole 105 being too large.

[0047] As a preferred solution, Fig. 9 As shown, the cross section of the motherboard 104 and the cross section of the connecting hole 105 are both elliptical structures. Setting the cross section of the motherboard 104 to an elliptical structure can increase the width of the cross section of the motherboard 104 so as to open the second bolt hole 107 on the motherboard 104; the elliptical structure can also ensure the stability of the motherboard 104 during installation, prevent the motherboard 104 from rotating along the axial direction, and thus reduce the difficulty of installing the motherboard 104.

[0048] As a preferred solution, Figure 3 As shown, there is a gap between the end of the motherboard 104 and the connector 108 and the inner wall of the steel pipe column 101, and after the bolt 103 is tightened, the side wall of the motherboard 104 is in close contact with the inner wall of the steel pipe column 101. The total length of the motherboard 104 and the connector 108 is set to be at least 2 mm smaller than the width of the cross section of the steel pipe column 101, that is, the gap between the end of the motherboard 104 and the connector 108 and the inner wall of the steel pipe column 101 is not less than 1 mm, which can ensure that after the bolt 103 is tightened, the side wall of the motherboard 104 is in close contact with the inner wall of the steel pipe column 101, thereby ensuring the connection stability of the motherboard 104.

[0049] The present invention also provides a method for constructing a closed-section column-steel beam connection node, comprising the following steps:

[0050] Carry out construction preparation according to the construction drawings and site conditions, locate the first bolt holes 106 on the steel pipe column 101 and the beam end plate 111, and mark them to determine the installation position;

[0051] Making the first bolt hole 106 and the connection hole 105 on the steel pipe column 101, and making the first bolt hole 106 on the end plate;

[0052] The steel beam 102 is transported to the installation position so that the first bolt hole 106 on the end plate is aligned with the first bolt hole 106 of the steel pipe column 101;

[0053] The motherboard 104 is fixed on a dedicated installation tool 109 through a connector 108. The installation tool 109 is provided with a socket 110 that matches the outer wall of the connector 108. The installation tool 109 is detachably connected to the outer wall of the connector 108 through the socket 110. Then, the motherboard 104 is inserted into the steel pipe column 101 through the connection hole 105 using the installation tool 109.

[0054] After the bolts 103 are passed through the bolt holes 103 of the end plate and the steel pipe column 101 in sequence, they are connected to the second bolt holes 107 on the mother plate 104;

[0055] The installation tool 109 is removed, and the bolts 103 are tightened to press the mother plate 104 against the inner wall of the steel pipe column 101, thereby completing the node construction.

[0056] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A closed section column-steel beam connection node, comprising a steel pipe column (101), a steel beam (102) and bolts (103), wherein the steel beam (102) has a beam end plate (111), characterized in that: Also includes: The motherboard (104) is a long strip structure. A connecting hole (105) is provided on one side wall adjacent to the steel pipe column (101). The motherboard (104) can be inserted into the steel pipe column (101) through the connecting hole (105). A first bolt hole (106) is provided on the motherboard (104). The first bolt hole (106) is provided with an internal thread. The other side wall of the steel pipe column (101) and the beam end plate (111) are both provided with a first bolt hole (106). The bolt (103) can pass through the first bolt hole (106) and be threadedly connected with the internal thread of the second bolt hole (107). A connector (108) is provided at one end of the motherboard (104), and the connector (108) can pass through the connection hole (105).

2. The closed section column-steel beam connection node according to claim 1, characterized in that: The connector (108) is provided with a through hole (201), a latch mechanism (202) is provided in the through hole (201), the latch mechanism (202) is latched with the jack (110), the latch mechanism (202) comprises a clamping sleeve (203), a hemispherical body (204) and a spring (205), the hemispherical body (204) is provided with a card (206), the hemispherical body (204) is slidably connected to the through hole (201) via the card (206), the clamping sleeve (203) is provided on the through hole (201), and the hemispherical body (204) is slidably connected to the through hole (201) via the card (206). The top edge of the through hole (201), the sleeve (203) is used to prevent the hemisphere (204) from slipping out of the insertion hole (110), the spring (205) is arranged in the through hole (201), the spring (205) abuts against the card (206), the spring (205) is used to apply an elastic force toward the sleeve (203) to the card (206), and under the action of the elastic force of the spring (205), the arc surface of the hemisphere (204) protrudes from the through hole (201) and the card (206) abuts against the sleeve (203).

3. The closed section column-steel beam connection node according to claim 1, characterized in that: The connector (108) is a square structure, the plug hole (110) is a square hole, and the inner wall of the plug hole (110) fits with the outer wall of the connector (108).

4. The closed section column-steel beam connection node according to claim 1, characterized in that: The distance between the center position of the first bolt hole (106) on the motherboard (104) and the edge of the motherboard (104) is not less than 1.5 times the diameter of the first bolt hole (106).

5. The closed section column-steel beam connection node according to claim 1, characterized in that: The gap between the inner wall of the connection hole (105) on the steel pipe column (101) and the outer wall of the mother plate (104) is 1.5 to 2 mm.

6. The closed section column-steel beam connection node construction as claimed in claim 1, characterized in that: The cross-section of the motherboard (104) and the cross-section of the connection hole (105) are both elliptical structures.

7. The closed section column-steel beam connection node construction as claimed in claim 1, characterized in that: There is a gap between the end of the motherboard (104) and the connector (108) and the inner wall of the steel pipe column (101). After the bolts (103) are tightened, the side wall of the motherboard (104) is tightly attached to the inner wall of the steel pipe column (101).

8. A method for construction using the closed section column-steel beam connection node as claimed in claim 1, characterized in that: The following steps are involved: Carry out construction preparation according to the construction drawings and site conditions, locate the first bolt hole (106) on the steel pipe column (101) and the beam end plate (111), and mark them, thereby determining the installation position; Making a first bolt hole (106) and a connection hole (105) on the steel pipe column (101), and making a first bolt hole (106) on the end plate; The steel beam (102) is transported to the installation position so that the first bolt hole (106) on the end plate is aligned with the first bolt hole (106) of the steel pipe column (101); The motherboard (104) is fixed to a dedicated installation tool (109) via a connector (108); the installation tool (109) is provided with a socket (110) that matches the outer wall of the connector (108); the installation tool (109) is detachably connected to the outer wall of the connector (108) via the socket (110); and then the motherboard (104) is inserted into the steel pipe column (101) via the connection hole (105) using the installation tool (109); After the bolts (103) are passed through the bolt (103) holes of the end plate and the steel pipe column (101) in sequence, they are connected to the second bolt holes (107) on the mother plate (104); The installation tool (109) is removed, and the bolts (103) are tightened to press the mother plate (104) against the inner wall of the steel pipe column (101), thereby completing the node construction.

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