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

Abstract

The application 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 and the construction method thereof comprise a steel pipe column, a steel beam and a bolt, the steel beam is provided with an end plate, and further comprises a female plate which is in a long strip structure, one side wall of the steel pipe column is provided with a connecting hole, the female plate can be inserted into the steel pipe column through the connecting hole, the female plate is provided with a first bolt hole, 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 second bolt hole, and the bolt can be threadedly connected with the internal thread of the first bolt hole through the second bolt hole; and a connector is arranged at one end of the female plate and can pass through the connecting hole. The closed-section column-steel beam connecting joint and the construction method thereof can realize the connection between the steel beam connecting joint and the steel pipe column without using welding, and can avoid the influence of the welding quality between the steel beam connecting joint and the steel pipe column on the mechanical properties of the steel beam connecting joint.

Description

Technical Field

[0001] This invention relates to the field of steel structure construction technology, specifically to a closed-section column-steel beam connection node and its construction method. Background Technology

[0002] With the advancement of industrialized construction and the popularization of green building concepts, steel structures and composite structures are being used more and more widely in infrastructure construction. At the same time, this is placing increasingly higher demands on the performance of building structures. Closed-section columns (such as circular steel tube columns and square steel tube columns) are widely used in modern buildings, especially large-span, high-rise, and seismically resistant buildings, due to their excellent torsional resistance, high section efficiency, and aesthetic appeal. In building structural systems, steel beam connection nodes, as key components for transferring internal forces between beams and columns, directly affect the stability, load-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 weld between the steel beam connection node and the steel pipe column is also difficult to guarantee during on-site construction, which will affect the construction progress and the mechanical properties of the steel beam connection node. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems in the prior art and provide a closed-section column-steel beam connection node and its construction method, which can achieve the connection between the steel beam connection node and the steel pipe column without the use of 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] This 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 beam end plates, and further includes:

[0006] The mother plate is a long strip structure. The side wall adjacent to the steel pipe column is provided with a connecting hole. The mother plate can be inserted into the steel pipe column through the connecting hole. The mother plate is provided with a first bolt hole with internal thread. The other side wall of the steel pipe column and the beam end plate are provided with a second bolt hole. The bolt can pass through the second bolt hole and be threaded to the internal thread of the first bolt hole.

[0007] A connector is located at one end of the motherboard, and the connector can pass through the connection hole;

[0008] The connector has a through hole, and a locking mechanism is provided in the through hole. The locking mechanism engages with the socket. The locking mechanism includes a sleeve, a hemisphere, and a spring. A card is provided on the hemisphere, and the hemisphere is slidably connected to the through hole through the card. The sleeve is located at the top edge of the through hole and is used to prevent the hemisphere from slipping out of the socket. The spring is located in the through hole and abuts against the card. The spring is used to apply an elastic force toward the sleeve to the card. Under the action of the spring's elastic force, the arc-shaped surface of the hemisphere protrudes from the through hole and the card abuts against the sleeve.

[0009] Preferably, the distance from the center of the first bolt hole on the mother plate to the edge of the mother plate is not less than 1.5 times the diameter of the first bolt hole.

[0010] Preferably, the gap between the inner wall of the connecting hole on the steel pipe column and the outer wall of the mother plate is 1.5 to 2 mm.

[0011] Preferably, the cross-section of the mother plate and the cross-section of the connecting hole are both elliptical structures.

[0012] Preferably, a gap is left between the end of the mother plate and the connector and the inner wall of the steel pipe column, so that after the bolts are tightened, the side wall of the mother plate is in close contact with the inner wall of the steel pipe column.

[0013] This invention also discloses a construction method using a closed-section column-steel beam connection node, comprising the following steps:

[0014] Based on the construction drawings and site conditions, prepare for construction, locate the second bolt hole positions on the steel pipe column and beam end plate, and mark them to determine the installation position;

[0015] Make the second bolt holes and connection holes on the steel pipe column, and make the second bolt holes on the beam end plate;

[0016] Move the steel beam to the installation position so that the second bolt hole on the beam end plate is aligned with the second bolt hole on the steel pipe column;

[0017] The mother plate is fixed to a special installation tool via a connector. The installation tool has a socket that mates with the outer wall of the connector. The installation tool is detachably connected to the outer wall of the connector via the socket. Then, the mother plate is inserted into the steel pipe column through the connection hole using the installation tool.

[0018] After passing the bolts through the second bolt holes of the beam end plate and the steel pipe column in sequence, they are connected to the first bolt hole on the mother plate.

[0019] Remove the installation tools and tighten the bolts to press the mother plate against the inner wall of the steel pipe column, thus completing the joint construction.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: The closed-section column-steel beam connection node of the present invention involves creating first bolt holes and connecting holes on the steel pipe column and on the end plate. The steel beam is then transported to the installation position, aligning the first bolt holes on the end plate with those on the steel pipe column. The mother plate is fixed to the connecting hole on the installation tool via a connector. The mother plate is inserted into the steel pipe column through the connecting hole. Bolts are passed sequentially through the bolt holes on the end plate and the steel pipe column, and then connected to the second bolt hole on the mother plate. Finally, the installation tool is removed, and the bolts are tightened to press the mother plate against the inner wall of the steel pipe column, thus completing the entire connection node construction. This allows the entire connection node to achieve bolted connection between the steel beam and the closed-section column without cutting the steel pipe column, thereby achieving the connection between the steel beam connection node and the steel pipe column without welding, avoiding the influence of weld quality between the steel beam connection node and the steel pipe column on the mechanical properties of the steel beam connection node.

[0021] By incorporating through holes in the connectors and locking mechanisms within the insertion holes, combined with the connector's function, bolt connections between steel beams and closed-section columns can be achieved without cutting the steel pipe columns, significantly improving construction efficiency. The first bolt hole on the steel pipe column can be fabricated on-site according to the component installation requirements, avoiding the problem of bolts being uninstallable due to construction errors. This invention features a simple structure, novel and reasonable design, high reliability, good performance, and ease of widespread application. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the process flow of the present invention;

[0023] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0024] Figure 3 This is a top view of the structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the right-side structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the steel pipe column structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the installation tool of the present invention;

[0028] Figure 7 This is a schematic diagram of the left side of the installation tool of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the mother plate of the present invention;

[0030] Figure 9 This is a schematic diagram of the right side structure of the mother plate of the present invention;

[0031] Figure 10 This is a schematic diagram of the locking mechanism of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 101. Steel pipe column, 102. Steel beam, 103. Bolt, 104. Mother plate, 105. Connecting hole, 106. First bolt hole, 107. Second bolt hole, 108. Connector, 109. Installation tool, 110. Insertion hole, 111. Beam end plate, 201. Through hole, 202. Clamping mechanism, 203. Sleeve, 204. Hemisphere, 205. Spring, 206. Clip. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figures 1-10 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. Words such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “inner,” “outer,” “upper,” “lower,” “far,” “near,” “front,” and “back” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0036] like Figures 1-10As shown, the closed-section column-steel beam connection node and its construction method provided by the present invention include a steel pipe column 101, a steel beam 102, and bolts 103. The steel beam 102 has a beam end plate 111. The invention also includes a mother plate 104 and a connector 108. The mother plate 104 is a long strip structure. A connection hole 105 is provided on one side wall adjacent to the steel pipe column 101. The mother plate 104 can be inserted into the steel pipe column 101 through the connection hole 105. A first bolt hole 106 is provided on the mother plate 104, and the first bolt hole 106 has an internal thread. A second bolt hole 107 is provided on the other side wall of the steel pipe column 101 and on the beam end plate 111. The bolt 103 can pass through the second bolt hole 107 and be threadedly connected to the internal thread of the first bolt hole 106. The connector 108 is located at one end of the mother plate 104 and can pass through the connection hole 105. The connector 108 has a through hole 201, and a locking mechanism 202 is provided inside the through hole 201. The locking mechanism 202 engages with the insertion hole 110. The locking 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 located at the top edge of the through hole 201 and is used to prevent the hemisphere 204 from slipping out of the insertion hole 110. The spring 205 is located inside the through hole 201 and 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-shaped surface of the hemisphere 204 protrudes from the through hole 201 and the card 206 abuts against the sleeve 203.

[0037] The working principle of the above embodiments is briefly described below:

[0038] During construction of this connection node, preparations are first made according to the construction drawings and site conditions. The positions of the second bolt holes 107 on the steel pipe column 101 and the beam end plate 111 are located and marked to determine the installation position. Then, the second bolt holes 107 and connecting holes 105 are made on the steel pipe column 101, and the second bolt holes 107 are made on the beam end plate 111. Finally, the steel beam 102 is moved to the installation position so that the second bolt holes 107 on the beam end plate 111 align with the second bolt holes on the steel pipe column 101. Align 107, fix the mother plate 104 into the connection hole 105 on the installation tool 109 through the connector 108, insert the mother plate 104 into the steel pipe column 101 through the connection hole 105, pass the bolt 103 through the second bolt hole 107 of the beam end plate 111 and the steel pipe column 101 in sequence, and connect it into the first bolt hole 106 on the mother plate 104. Finally, remove the installation tool 109 and tighten the bolt 103 to press the mother plate 104 against the inner wall of the steel pipe column 101, thereby completing the node construction.

[0039] The closed-section column-steel beam connection node and its construction method of the present invention can realize the bolt 103 connection between the steel beam 102 and the closed-section column without cutting the steel pipe column 101. Thus, the connection between the steel beam connection node and the steel pipe column 101 can be realized without welding, 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.

[0040] When installing the motherboard 104, the inner wall of the insertion hole 110 of the installation tool 109 first contacts the protruding arc-shaped surface of the hemisphere 204. The pressure applied by the inner wall of the insertion hole 110 to the arc-shaped surface presses the hemisphere 204 into the through hole 201 on the connector 108. The spring 205 is compressed by the hemisphere 204 and the clip 206. When the insertion hole 110 on the installation tool 109 communicates with the through hole 201 on the connector 108, the elastic force applied by the spring 205 to the hemisphere 204 and the clip 206 drives... Card 206 and hemisphere 204 move toward the side closer to sleeve 203 until card 206 abuts against sleeve 203. Sleeve 203 prevents hemisphere 204 from slipping out of through hole 201. The arc-shaped surface of hemisphere 204 protrudes from through hole 201 and extends into socket 110, thereby limiting connector 108 within socket 110. This prevents motherboard 104 from shaking, improves the stability of motherboard 104, greatly simplifies the installation difficulty of motherboard 104, and improves the installation efficiency and accuracy of motherboard 104.

[0041] As a preferred option, such as Figure 8 and Figure 9 As shown, the connector 108 has a square structure, the socket 110 has a square hole, and the inner wall of the socket 110 fits against the outer wall of the connector 108.

[0042] As a preferred option, such as Figure 2 , Figure 8 and Figure 9 As shown, the center of the first bolt hole 106 on the mother plate 104 is at least 1.5 times the diameter of the first bolt hole 106 from the edge of the mother plate 104. By setting the center of the first bolt hole 106 to be at least 1.5 times the diameter of the first bolt hole 106 from the edge of the mother plate 104, stress concentration at the end of the mother plate 104 and premature shear failure of the first bolt hole 106 under the stress of the bolt 103 can be prevented, thereby ensuring the load-bearing capacity of the entire connection node.

[0043] As a preferred option, such as Figure 5 , Figure 8 and Figure 9As shown, the gap between the inner wall of the connecting hole 105 on the steel pipe column 101 and the outer wall of the mother plate 104 is 1.5–2 mm. Setting the gap between the inner wall of the connecting hole 105 on the steel pipe column 101 and the outer wall of the mother plate 104 to 1.5–2 mm, that is, the cross-sectional dimension of the connecting hole 105 is 1.5–2 mm larger than the cross-sectional dimension of the mother plate 104, ensures that the mother plate 104 can be installed without being unable to pass through due to the connecting hole 105 being too small, or with the connecting hole 105 being too large, thus affecting the mechanical properties of the steel pipe column 101.

[0044] As a preferred option, such as Figure 9 As shown, the cross-section of the mother plate 104 and the cross-section of the connecting hole 105 are both elliptical. Setting the cross-section of the mother plate 104 as elliptical increases the width of the cross-section of the mother plate 104, so that the second bolt hole 107 can be opened on the mother plate 104; the elliptical structure can also ensure the stability of the mother plate 104 during the installation process, prevent the mother plate 104 from rotating along the axial direction, thereby reducing the installation difficulty of the mother plate 104.

[0045] As a preferred option, such as Figure 3 As shown, a gap is left between the end of the mother plate 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 mother plate 104 is tightly attached to the inner wall of the steel pipe column 101. The total length of the mother plate 104 and the connector 108 is set to be at least 2mm smaller than the width of the cross-section of the steel pipe column 101, that is, the gap between the end of the mother plate 104 and the connector 108 and the inner wall of the steel pipe column 101 is not less than 1mm. This ensures that after the bolts 103 are tightened, the side wall of the mother plate 104 is tightly attached to the inner wall of the steel pipe column 101, thereby ensuring the connection stability of the mother plate 104.

[0046] This invention also provides a method for constructing a closed-section column-steel beam connection node, comprising the following steps:

[0047] According to the construction drawings and site conditions, prepare for construction, locate the position of the second bolt hole 107 on the steel pipe column 101 and the beam end plate 111, and mark it to determine the installation position;

[0048] Make the second bolt hole 107 and the connecting hole 105 on the steel pipe column 101, and make the second bolt hole 107 on the beam end plate 111;

[0049] Move the steel beam 102 to the installation position so that the second bolt hole 107 on the beam end plate 111 is aligned with the second bolt hole 107 on the steel pipe column 101.

[0050] The mother plate 104 is fixed to the special installation tool 109 via the connector 108. The installation tool 109 is provided with a socket 110 that mates with 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. Then, the mother plate 104 is inserted into the steel pipe column 101 through the connection hole 105 using the installation tool 109.

[0051] After passing the bolt 103 through the second bolt hole 107 of the beam end plate 111 and the steel pipe column 101 in sequence, it is connected to the first bolt hole 106 on the mother plate 104.

[0052] Remove the installation tool 109 and tighten the bolts 103 to press the mother plate 104 against the inner wall of the steel pipe column 101, thereby completing the node construction.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these 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 mother plate (104) is a long strip structure. A connecting hole (105) is provided on one side wall adjacent to the steel pipe column (101). The mother plate (104) can be inserted into the steel pipe column (101) through the connecting hole (105). The mother plate (104) is provided with a first bolt hole (106). 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 provided with a second bolt hole (107). The bolt (103) can pass through the second bolt hole (107) and be threadedly connected to the internal thread of the first bolt hole (106). A connector (108) is provided at one end of the mother plate (104), and the connector (108) can pass through the connection hole (105). The connector (108) is provided with a through hole (201), and a locking mechanism (202) is provided in the through hole (201). The locking mechanism (202) engages with the socket (110). The locking 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 provided in the through hole (110). At the top edge of the perforation (201), the sleeve (203) is used to prevent the hemisphere (204) from slipping out of the insertion hole (110). The spring (205) is located inside 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). 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).

2. The closed-section column-steel beam connection node as described in claim 1, characterized in that, The connector (108) has a square structure, and the socket (110) has a square hole. The inner wall of the socket (110) fits against the outer wall of the connector (108).

3. The closed-section column-steel beam connection node as described in claim 1, characterized in that, The distance between the center of the first bolt hole (106) on the mother plate (104) and the edge of the mother plate (104) is not less than 1.5 times the diameter of the first bolt hole (106).

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

5. The closed-section column-steel beam connection node as described in claim 1, characterized in that, The cross-section of the mother plate (104) and the cross-section of the connecting hole (105) are both elliptical structures.

6. The closed-section column-steel beam connection node as described in claim 1, characterized in that, The end of the mother plate (104) and the connector (108) are both left with a gap between them and the inner wall of the steel pipe column (101). After the bolt (103) is tightened, the side wall of the mother plate (104) is in close contact with the inner wall of the steel pipe column (101).

7. A construction method using the closed-section column-steel beam connection node as described in claim 1, characterized in that, Includes the following steps: According to the construction drawings and site conditions, prepare for construction, locate the position of the second bolt hole (107) on the steel pipe column (101) and the beam end plate (111), and mark it to determine the installation position; Make the second bolt hole (107) and connecting hole (105) on the steel pipe column (101), and make the second bolt hole (107) on the beam end plate (111). Move the steel beam (102) to the installation position so that the second bolt hole (107) on the beam end plate (111) is aligned with the second bolt hole (107) of the steel pipe column (101); The mother plate (104) is fixed on a special installation tool (109) via a connector (108). The installation tool (109) is provided with a socket (110) that mates with 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). Then, the mother plate (104) is inserted into the steel pipe column (101) through the connection hole (105) using the installation tool (109). After the bolt (103) is passed through the second bolt hole (107) of the beam end plate (111) and the steel pipe column (101) in sequence, it is connected to the first bolt hole (106) on the mother plate (104); Remove the installation tool (109) and tighten the bolt (103) 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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