Adjustable steel structure column support connecting structure and connecting method

Abstract

This invention discloses an adjustable steel column bracing connection structure, comprising a steel column, a main lug plate and two auxiliary lug plates connected by pins, an intermediate support member, a first end plate, a second end plate welded to the intermediate support member, and high-strength bolts with locking nuts connecting the first and second end plates; bolt holes are provided on the first and second end plates, and a gap is maintained between the two end plates; the steel column is welded to the main lug plate or the two auxiliary lug plates, and correspondingly, the two auxiliary lug plates are welded to the first end plate or the main lug plate is welded to the first end plate. A connection method for the connection structure is also disclosed. This invention optimizes the node construction of the extended arm nodes of the column bracing member, allowing the connection length deviation, horizontal deviation, and angular deviation of the column bracing exceeding the construction acceptance specifications along the column bracing axis to be adjusted within a certain range, facilitating the installation of the column bracing and reducing construction difficulty.

Description

Technical Field

[0001] This invention relates to the field of building engineering, and more specifically to an adjustable steel structure column bracing connection structure and connection method. Background Technology

[0002] In recent years, high-strength bolt connections have become one of the main connection methods for steel structures, alongside welding. They have advantages such as good load-bearing performance, fatigue resistance, good seismic performance, high connection stiffness, and simple construction. They are widely used in on-site connections of steel structures and have become one of the main means of steel structure installation.

[0003] In the construction of steel structures using high-strength bolts, the joints between H-beam columns are usually handled by splicing the entire cross-section of the components on site. Each joint requires a node plate in the web and flange, and then is connected by high-strength bolts. This requires a large number of high-strength bolts and large node plates, making the construction cumbersome.

[0004] CN204753839U discloses a connecting device for inter-column bracing, mainly composed of a steel column, an extendable arm, end plates, inter-column bracing, and high-strength bolts. By welding end plates to the extended end of the extendable arm and both ends of the inter-column bracing, it replaces the web plate and flange plate (outer flange plate and inner flange plate) used in the prior art. This significantly reduces the number of connecting plates and high-strength bolts used at the joint between the extendable arm and the inter-column bracing, lowering project costs, simplifying the manufacturing process, and improving on-site construction efficiency. However, this utility model uses a fixed-angle welding connection between the extendable arm and the column; when the installation deviation exceeds the specification requirements, it makes it difficult to install the inter-column bracing correctly.

[0005] Although the "Code for Acceptance of Construction Quality of Steel Structures" (GB50205-2020) clearly stipulates the acceptance of component installation deviations, requiring that the allowable deviation of component position and size should not exceed 10mm, and the "Technical Specification for High Strength Bolt Connection of Steel Structures" (JGJ82-2011) provides measures for handling the gaps in the contact surface caused by plate thickness tolerance, manufacturing deviation, or installation deviation, in actual projects, it is common to encounter situations where the angle and position of the inter-column bracing do not match the design drawings, or the gaps between connecting plates exceed the tolerance, resulting in the inter-column bracing not being installed in place, and on-site rectification is labor-intensive and time-consuming. Summary of the Invention

[0006] To overcome the problems of existing technologies where column bracing cannot be installed properly due to installation deviations exceeding specifications, resulting in time-consuming and labor-intensive on-site rectification, and to maximize cooperation with on-site high-strength bolt connections in steel structure construction, this invention provides an adjustable steel structure column bracing connection structure and connection method.

[0007] The adjustable steel column support connection structure provided by the present invention includes a steel column, a main lug plate and two auxiliary lug plates connected by pins, an intermediate support member, a first end plate, a second end plate welded to the intermediate support member, and a high-strength bolt with a locking nut connecting the first end plate and the second end plate; bolt holes are provided on the first end plate and the second end plate, and a gap is maintained between the two end plates; the steel column is welded to the main lug plate or the two auxiliary lug plates, and correspondingly the two auxiliary lug plates are welded to the first end plate or the main lug plate is welded to the first end plate.

[0008] As an improvement, one end of the main ear plate is welded to the steel column, and the other end of the main ear plate is machined into a semi-circle with a pin hole. The main ear plate extends obliquely along the axis of the column support. Two auxiliary ear plates with pin holes of the same size clamp the main ear plate from both sides and are connected to the main ear plate through pins. The end of the two auxiliary ear plates connected to the main ear plate is semi-circular, and the other end of the two auxiliary ear plates is welded to the first end plate.

[0009] As another improvement, one end of the two auxiliary lugs is welded to the steel column, and the other end of the two auxiliary lugs is machined into a semi-circle with pin holes of the same size. The two auxiliary lugs extend obliquely along the axis of the column support. The two auxiliary lugs clamp the main lug with pin holes from both sides and are connected to the main lug through pins. The end of the main lug that connects to the two auxiliary lugs is semi-circular, and the other end of the main lug is welded to the first end plate.

[0010] As a further improvement, the bolt holes on the first end plate are slots parallel to the thickness direction of the secondary lug plate or the main lug plate. The horizontal deviation of the component along the end plate surface can be locally adjusted when the inter-column support connection is made.

[0011] As a further improvement, the bolt holes on the second end plate are slots perpendicular to the orientation of the bolt holes on the first end plate.

[0012] When the bolt holes on the first end plate are slotted holes, and the bolt holes on the second end plate are also slotted holes perpendicular to the bolt holes on the first end plate, it is easier to adjust the horizontal deviation of the component along the end plate surface when connecting the columns.

[0013] This invention also provides a connection method for an adjustable steel structure inter-column bracing connection structure, including manufacturing steps and installation steps: The processing and manufacturing steps include: 1) Determine the number of high-strength bolts by calculation; determine the length of the high-strength bolt based on the thickness of the two end plates, the thickness of the locking nut between the end plates, the nut thickness of the high-strength bolt, the washer thickness, and the pitch allowance of 3 to 5 threads; determine the model and specifications of the pin shaft by calculation. 2) The intermediate support component is directly processed into a finished part in the factory. Both ends of the finished part are welded with a second end plate with the same external dimensions as the end of the auxiliary ear plate or the main ear plate. Bolt holes are opened on the end plate. The number and size of the holes are determined according to the type and quantity of high-strength bolts required for connection. 3) When processing the steel column, the main lug plate or two auxiliary lug plates are processed at the support point of the steel column, and the auxiliary lug plate with the first end plate or the main lug plate with the first end plate are processed at the same time. The installation steps include: 1) Leave a gap between the two end plates that are to be connected; 2) Connect the main lug plate or auxiliary lug plate on the steel column to the auxiliary lug plate with the first end plate or the main lug plate with the first end plate through a pin, so that the two auxiliary lug plates clamp the main lug plate from both sides; 3) Connect the first end plate and the second end plate with high-strength bolts; tighten lock nuts on the threaded rod located in the gap between the two end plates near the two end plates, and tighten the threaded rod part that passes through the other end plate with a washer and then tighten it with the matching nut. 4) When there is an angular deviation during the installation of the inter-column support, the pin connection between the auxiliary lug plate and the main lug plate is adjusted and then the pin is fixed. When there is a dimensional deviation of the component along the axis of the inter-column support, the connection length deviation along the axis of the inter-column support is adjusted by adjusting the position of the locking nut between the end plates. If there is a certain positional deviation along the plane of the end plate when the first end plate and the second end plate are connected, the horizontal deviation of the component along the plane of the end plate is locally adjusted by the slot on the first end plate or by the slots that are perpendicular to each other on the upper surfaces of the first end plate and the second end plate.

[0014] The present invention has the following beneficial effects: This invention ensures that the angle of the connection between the column support and the steel column (or steel beam) is adjustable by setting a pin-type connection node at the connection between the column support and the steel column. When the auxiliary lug plate of the pin connection is connected to the end plate of the intermediate support, a high-strength bolt with a locking nut is used. The slots with mutually perpendicular orientations are opened on the two end plates, so that the connection length deviation of the column support exceeding a certain range of the construction and acceptance specifications along the axis of the column support, as well as the horizontal deviation along the end plate surface, can also be adjusted within a certain range.

[0015] In summary, by optimizing the node structure of the extended arm of the inter-column support component, this invention allows the connection length deviation, horizontal deviation, and angular deviation of the inter-column support that exceed the construction and acceptance specifications along the axis of the inter-column support to be adjusted within a certain range, which facilitates the installation of the inter-column support on site and reduces the difficulty of on-site construction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one possible connection structure of the present invention; Figure 2 for Figure 1 View from AA direction; Figure 3 A schematic diagram of the main lug plate connected to the steel column; Figure 4 This is a schematic diagram of the secondary lug plate and the first end plate connected to it; Figure 5 for Figure 4 Middle BB section; Figure 6 This is a schematic diagram of the intermediate support member and the second end plate connected to it; Figure 7 for Figure 6 CC section.

[0017] In the diagram: 1-steel column, 2-main ear plate, 3-secondary ear plate, 4-pin, 5-intermediate support, 6-first end plate, 7-second end plate, 8-high-strength bolt, 9-locking nut, 10-matching nut, 11-slot, 12-slot, 13-pin hole. Detailed Implementation

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the connection structure of the present invention (taking the connection end with the steel column as an example), by Figure 1 As can be seen, the adjustable steel structure column support connection structure provided by the present invention mainly includes a steel column 1, a main lug plate 2 connected to the steel column, two auxiliary lug plates 3 connected to the main lug plate 2 by a pin 4, an intermediate support 5, a first end plate 6 welded to the auxiliary lug plate 3, a second end plate 7 connected to the intermediate support, a locking nut 9 between the two end plates, a matching nut 10 and a high-strength bolt 8.

[0020] Figure 2 yes Figure 1 Top view.

[0021] like Figure 3 As shown, one end of the main ear plate 2 is welded and fixed to the steel column 1, and the other end is processed into a semi-circle with a pin hole 13, extending obliquely along the axis of the column support.

[0022] like Figure 4 As shown, the two auxiliary ear plates 3 are connected to the main ear plate 2 at the ends and are machined into semi-circles with pin holes 13. The other ends are welded to the first end plate 6, which has the same width as the auxiliary ear plates 3.

[0023] Figure 5 The corresponding Figure 4 BB cross-sectional view.

[0024] like Figure 6As shown, the intermediate support 5 is welded to the second end plate 7 perpendicular to its cross-sectional direction.

[0025] Figure 7 The corresponding Figure 6 The CC sectional view shows the shape and structural dimensions of the second end plate 7.

[0026] The first end plate 6 and the second end plate 7 have the same thickness and outer contour dimensions. The width of the connected auxiliary ear plate 3, the cross-sectional specifications of the intermediate support 5, and the hole spacing and edge distance structure required for the connection of the high-strength bolts 8 need to be considered.

[0027] A slot 11 is provided on the first end plate 6 in the direction parallel to the thickness of the secondary ear plate 3 (see...). Figure 5 A slot 12 is provided at the corresponding position on the second end plate 7 (see...). Figure 7 The specifications of the holes can be calculated based on the bearing capacity of the inter-column bracing, and the required number and specifications of high-strength bolts can be selected in accordance with the "Technical Specification for High-Strength Bolt Connection of Steel Structures" JGJ 82-2011.

[0028] The distribution of high-strength bolts 8 on the end plate is determined based on the required quantity, specifications, and structural requirements of the inter-column bracing calculations. Figure 6 , Figure 7 This is one of the distribution forms.

[0029] The locking nut 9 is a nut that matches the strength grade of the high-strength bolt 8.

[0030] The following is combined Figures 1-7 The connection method of the connection structure of the present invention is described.

[0031] 1) The intermediate support 5 with the second end plate 7 and the auxiliary ear plate 3 with the first end plate 6 are both processed into finished parts in the factory. When the steel column 1 is processed, the main ear plate 2 is attached to the joint between the column support and the main ear plate 2. 2) During the on-site installation phase, the two auxiliary ear plates 3 with the first end plate 6 are clamped from both sides to the main ear plate 2 on the steel column 1 and connected by the pin 4. The other end is connected to the intermediate support 5 with the second end plate 7 by several high-strength bolts 8. After the high-strength bolt 8 passes through the second end plate 7 on one side, the locking nut 9 is screwed on, and then it passes through the first end plate 6 on the other side. After the washer is put on, it is tightened and fixed with the matching nut 10 of the high-strength bolt 8. 3) When there is an angular deviation during the installation of the inter-column support, the pin 4 is fixed after adjusting the angle of the connection between the auxiliary ear plate 3 and the main ear plate 2. When there is a dimensional deviation of the component along the axis of the inter-column support, the connection length is adjusted by adjusting the locking nut 9 of the high-strength bolt 8 connecting the first end plate 6 and the second end plate 7. If there is a certain positional deviation along the plane of the end plate when the first end plate 6 and the second end plate 7 are connected, it is locally adjusted by the slot 11 provided on the first end plate 6 and the slot 12 provided on the second end plate 7.

[0032] Of course, in another case, in order to reduce the size of the end plate, while meeting the structural size requirements, the two auxiliary ear plates can also be set on the steel column. One end of the main ear plate is connected to the auxiliary ear plate through a pin, and the other end of the main ear plate is connected to the second end plate of the intermediate support through the first end plate.

Claims

1. An adjustable steel structure inter-column bracing connection structure, characterized in that: It includes a steel column, a main lug plate and two auxiliary lug plates connected by a pin, an intermediate support, a first end plate, a second end plate welded to the intermediate support, and a high-strength bolt with a locking nut connecting the first end plate and the second end plate; bolt holes are provided on the first end plate and the second end plate, and a gap is maintained between the two end plates; the steel column is welded to the main lug plate or the two auxiliary lug plates, and correspondingly the two auxiliary lug plates are welded to the first end plate or the main lug plate is welded to the first end plate.

2. The adjustable steel structure inter-column bracing connection structure according to claim 1, characterized in that: One end of the main ear plate is welded to the steel column, and the other end of the main ear plate is machined into a semi-circle with a pin hole. The main ear plate extends obliquely along the axis of the column support. Two auxiliary ear plates with pin holes of the same size clamp the main ear plate from both sides and are connected to the main ear plate through pins. The end of the two auxiliary ear plates connected to the main ear plate is semi-circular, and the other end of the two auxiliary ear plates is welded to the first end plate.

3. The adjustable steel structure inter-column bracing connection structure according to claim 1, characterized in that: The two auxiliary lugs are welded to the steel column at one end, and the other end of the two auxiliary lugs is machined into a semi-circle with pin holes of the same size. The two auxiliary lugs extend obliquely along the axis of the column support. The two auxiliary lugs clamp the main lug with pin holes from both sides and are connected to the main lug through pins. The end of the main lug that connects to the two auxiliary lugs is semi-circular, and the other end of the main lug is welded to the first end plate.

4. The adjustable steel structure inter-column bracing connection structure according to any one of claims 1 to 3, characterized in that: The bolt holes on the first end plate are slots parallel to the thickness direction of the secondary lug or the main lug.

5. The adjustable steel structure inter-column bracing connection structure according to claim 4, characterized in that: The bolt holes on the second end plate are slots perpendicular to the bolt holes on the first end plate.

6. A connection method for the adjustable steel structure inter-column bracing connection structure as described in claim 4, characterized in that, This includes processing and manufacturing steps and installation steps: The processing and manufacturing steps include: 1) Determine the number of high-strength bolts by calculation; determine the length of the high-strength bolt based on the thickness of the two end plates, the thickness of the locking nut between the end plates, the nut thickness of the high-strength bolt, the washer thickness, and the pitch allowance of 3 to 5 threads; determine the model and specifications of the pin shaft by calculation. 2) The intermediate support component is directly processed into a finished part in the factory. Both ends of the finished part are welded with a second end plate with the same external dimensions as the end of the auxiliary ear plate or the main ear plate. Bolt holes are opened on the end plate. The number and size of the holes are determined according to the type and quantity of high-strength bolts required for connection. 3) When processing the steel column, the main lug plate or two auxiliary lug plates are processed at the support point of the steel column, and the auxiliary lug plate with the first end plate or the main lug plate with the first end plate are processed at the same time. The installation steps include: 1) Leave a gap between the two end plates that are to be connected; 2) Connect the main lug plate or auxiliary lug plate on the steel column to the auxiliary lug plate with the first end plate or the main lug plate with the first end plate through a pin, so that the two auxiliary lug plates clamp the main lug plate from both sides; 3) Connect the first end plate and the second end plate with high-strength bolts; tighten lock nuts on the threaded rod located in the gap between the two end plates near the two end plates, and tighten the threaded rod part that passes through the other end plate with a washer and then tighten it with the matching nut. 4) When there is an angular deviation during the installation of the inter-column support, the pin connection between the auxiliary ear plate and the main ear plate is adjusted and then the pin is fixed. When there is a dimensional deviation of the component along the axis of the inter-column support, the connection length deviation along the axis of the inter-column support is adjusted by adjusting the position of the locking nut between the end plates. If there is a certain positional deviation along the plane of the end plate when the first end plate and the second end plate are connected, the horizontal deviation of the component along the plane of the end plate is locally adjusted by the slot on the first end plate.

7. A connection method for the adjustable steel structure inter-column bracing connection structure as described in claim 5, characterized in that, This includes processing and manufacturing steps and installation steps: The processing and manufacturing steps include: 1) Determine the number of high-strength bolts by calculation; determine the length of the high-strength bolt based on the thickness of the two end plates, the thickness of the locking nut between the end plates, the nut thickness of the high-strength bolt, the washer thickness, and the pitch allowance of 3 to 5 threads; determine the model and specifications of the pin shaft by calculation. 2) The intermediate support component is directly processed into a finished part in the factory. Both ends of the finished part are welded with a second end plate with the same external dimensions as the end of the auxiliary ear plate or the main ear plate. Bolt holes are opened on the end plate. The number and size of the holes are determined according to the type and quantity of high-strength bolts required for connection. 3) When processing the steel column, the main lug plate or two auxiliary lug plates are processed at the support point of the steel column, and the auxiliary lug plate with the first end plate or the main lug plate with the first end plate are processed at the same time. The installation steps include: 1) Leave a gap between the two end plates that are to be connected; 2) Connect the main lug plate or auxiliary lug plate on the steel column to the auxiliary lug plate with the first end plate or the main lug plate with the first end plate through a pin, so that the two auxiliary lug plates clamp the main lug plate from both sides; 3) Connect the first end plate and the second end plate with high-strength bolts; tighten lock nuts on the threaded rod located in the gap between the two end plates near the two end plates, and tighten the threaded rod part that passes through the other end plate with a washer and then tighten it with the matching nut. 4) When there is an angular deviation during the installation of the inter-column support, the pin connection between the auxiliary ear plate and the main ear plate is adjusted and then the pin is fixed. When there is a dimensional deviation of the component along the axis of the inter-column support, the connection length deviation along the axis of the inter-column support is adjusted by adjusting the position of the locking nut between the end plates. If there is a certain positional deviation in the plane of the end plate when the first end plate and the second end plate are connected, the horizontal deviation of the component along the plane of the end plate is locally adjusted by the mutually perpendicular slots on the upper surfaces of the first end plate and the second end plate.

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