Large-span I-shaped rod piece assembly type joint based on eccentric circular ring cushion cover

Abstract

The invention relates to the technical field of building structures, in particular to an assembly type reinforcing joint of a large-span I-shaped rod piece truss, a construction method and a building system.The assembly type reinforcing joint of the large-span I-shaped rod piece truss comprises a first I-shaped piece, a second I-shaped piece and an I-shaped sliding pipe; an I-shaped groove is formed in the I-shaped sliding pipe; a first connecting hole and a second connecting hole are respectively formed in the end parts of the first I-shaped piece and the second I-shaped piece; third connecting holes are formed in the positions, corresponding to the first connecting holes and the second connecting holes, of the I-shaped sliding pipe. The end portion of the first I-shaped piece and the end portion of the second I-shaped piece are arranged in the I-shaped sliding pipe in a sleeved mode. Fastening pieces penetrate through the first connecting holes and the third connecting holes to connect the first I-shaped piece with the I-shaped sliding pipe; fasteners penetrate through the second connecting holes and the third connecting holes to connect the second I-shaped piece with the I-shaped sliding pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building structures, in particular to an assembled reinforcing joint of a large-span I-shaped member truss and a construction method. BACKGROUND

[0002] In the field of steel structure engineering, mechanical manufacturing and assembled buildings, I-shaped cross-section members (such as I-shaped steel and I-shaped steel) are widely used due to their excellent bending resistance and structural stability. To achieve the connection of I-shaped cross-section members, the existing technology mainly adopts welding connection, bolt connection or riveting connection.

[0003] Welding connection melts and combines the end parts of the I-shaped member through processes such as arc welding and gas shielded welding to form a monolithic connection, which is commonly used in fixed structures such as bridges and factory frames. However, welding connection requires professional welders to operate, is limited by environmental temperature and humidity, has a long construction period, and is difficult to meet the demand for rapid assembly. In addition, the heat-affected zone (HAZ) of welding is prone to residual stress, leading to material embrittlement; the quality of the weld depends on manual operation, and there is a risk of cracking.

[0004] Bolt connection is achieved by pre-drilling bolt holes in the flanges or webs of the I-shaped member and fastening them with high-strength bolts. Rivet connection uses rivets to penetrate the pre-drilled holes of the I-shaped member and forms a mechanical lock through cold hardening, which is used in various traditional steel structures or special load-bearing structures. However, pre-drilling of bolts or rivets requires precise drilling, and deviation in hole position can lead to connection failure; single bolt fastening is time-consuming, and the efficiency of multi-bolt connection decreases exponentially with the number of bolts. In addition, the holes weaken the cross-section of the I-shaped member, reducing the shear capacity; high stress concentration can cause fatigue failure. SUMMARY

[0005] The present application is a divisional application of application number 2025112948997, entitled "Large-span I-shaped member assembled joint based on eccentric circular ring sleeve", which is filed to overcome the single problem in the original application.

[0006] The present application aims to provide an assembled reinforcing joint of a large-span I-shaped member truss, a construction method and a building system to solve at least one technical problem in the prior art.

[0007] To solve the above technical problems, the present application provides an assembled reinforcing joint of a large-span I-shaped member truss, which comprises a first I-shaped member, a second I-shaped member and an I-shaped sliding tube. The I-shaped sliding tube is provided with an I-shaped groove; The first I-shaped member and the second I-shaped member are respectively provided with a first connecting hole and a second connecting hole; The I-shaped sliding tube and the first connecting hole and the second connecting hole are provided with a third connecting hole at the corresponding position; The ends of the first I-shaped part and the second I-shaped part are respectively fitted into the I-shaped sliding tube; The first I-shaped part and the I-shaped sliding tube are connected by fasteners passing through the first and third connecting holes. The second I-shaped part and the I-shaped sliding tube are connected by fasteners passing through the second and third connecting holes.

[0008] Furthermore, limit blocks are provided on the first and second die parts; The limiting block is used to abut against the I-shaped sliding tube after the first I-shaped part and the second I-shaped part are inserted into the I-shaped sliding tube.

[0009] Furthermore, a gap is reserved between the inner wall of the I-shaped sliding tube and the first I-shaped part and the second I-shaped part to make it easier to insert the first I-shaped part and the second I-shaped part.

[0010] Preferably, the gap is not less than 1 mm and not more than 5 mm; A compensation plate is provided within the gap.

[0011] Furthermore, an additional plate is also provided on the I-shaped sliding tube; The additional plates are disposed at both ends of the I-shaped sliding tube, and the additional plates are fixedly connected to the flanges and webs of the I-shaped sliding tube.

[0012] Furthermore, the first connecting hole, the second connecting hole, and the third connecting hole are prefabricated in the factory.

[0013] Furthermore, the first connecting hole, the second connecting hole, and the third connecting hole are formed by drilling holes after the first I-shaped part and the second I-shaped part are inserted into the I-shaped sliding tube.

[0014] Furthermore, the first connecting hole, the second connecting hole, and the third connecting hole are respectively disposed on the flange and web of the first I-shaped part, the second I-shaped part, and the I-shaped sliding tube.

[0015] On the other hand, this application also discloses a building system for prefabricated reinforcement nodes with large-span I-shaped truss members.

[0016] On the other hand, this application also discloses a construction method for prefabricated reinforcement nodes of large-span I-beam trusses. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a prefabricated reinforcement node for a large-span I-beam truss disclosed in this application; Figure 2 This is an exploded view of an assembled reinforcement node for a large-span I-beam truss disclosed in this application; Figure 3 This is a three-dimensional structural diagram of the prefabricated reinforcement node installation of a large-span I-beam truss disclosed in this application; Figure 4 A three-dimensional structural diagram of a prefabricated reinforcement node for a large-span I-beam truss with an added plate. Figure 5 A three-dimensional structural diagram of an I-shaped sliding tube with an added plate; Figure 6 A schematic diagram of the prefabricated reinforcement node for a large-span I-beam truss with an added plate. Figure 7 This is a schematic diagram showing the situation where the inner and outer holes are eccentric. Figure 8 A schematic diagram showing the virtual axis of the outer hole center and the virtual axis of the inner hole center of the eccentric annular pad; Figure 9 This is a planar sectional view of the first type of eccentric ring pad after assembly in Example 2; Figure 10 This is a planar sectional view of the second type of eccentric ring pad after assembly in Example 2; Figure 11 This is a planar sectional view of the third type of eccentric ring pad assembled in Example 2; Figure 12 This is a planar sectional view of the fourth type of eccentric ring pad assembled in Example 2; Figure 13 This is a top view of the bottom mold; Figure 14 This is the front view of the bottom mold; Figure 15 This is a top view of the caliper teeth; Figure 16 This is the front view of the toothed clasp; Figure 17 This is a top view of the base mold and calipers in use. Figure 18 This is the front view of the base mold and calipers when in use; Figure 19 This is a top view of the eccentric annular gasket. Figure 20 A top view of the eccentric annular bushing into which the wedge block is inserted; Figure 21 The front view of the eccentric annular bushing into which the wedge block is inserted; Figure 22 A front view of an eccentric annular gasket with teeth; Figure 23 The front view of the eccentric annular bushing with locking teeth engaging with the wedge block; Figure 24 This is a schematic diagram of the structure when the wedge is clamped by fasteners. Figure 25 This is a three-dimensional structural diagram of a building system with prefabricated reinforcement nodes featuring large-span I-shaped truss members.

[0019] Figure label: 1-First I-shaped part; 2-Second I-shaped part; 3-I-shaped sliding tube; 4-I-shaped groove; 5-First connecting hole; 6-Second connecting hole; 7-Third connecting hole; 8-Fastener; 9-Limiting block; 10-Gap; 11-Compensation plate; 12-Additional plate; 13-Flange; 14-Web plate; 15-Outer hole; 16-Inner hole; 17-Eccentric circular ring pad; 18-Upper flange; 19-Virtual axis of outer hole center; 20-Virtual axis of inner hole center; 21-Bottom mold; 22-Caliper; 23-Handle; 24-Measuring groove; 25-Measuring scale; 26-Pointer; 27-Eccentric circular ring pad; 28-Outer ring; 29-Inner ring; 30-Elastic element; 31-Wedge block; 32-Clamping tooth; 33-Clamping texture; 34-Standard part; 35-Reinforcing node. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the 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.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] It should also be noted that the specific embodiments or implementation methods described below are a series of optimized settings listed by the present invention to further explain the specific content of the invention, and these settings can be combined or used in conjunction with each other.

[0024] The present invention will be further explained below with reference to specific embodiments.

[0025] Example 1 like Figures 1-3 As shown, this embodiment provides an assembled reinforcement node for a large-span I-beam truss, including a first I-beam 1, a second I-beam 2, and an I-beam sliding tube 3; The I-shaped sliding tube 3 is provided with an I-shaped groove 4; The first I-shaped part 1 and the second I-shaped part 2 are respectively provided with a first connecting hole 5 and a second connecting hole 6 at their ends; The I-shaped sliding tube 3 and the first connecting hole 5 are respectively provided with a third connecting hole 7 at the corresponding positions of the second connecting hole 6; The ends of the first I-shaped part 1 and the second I-shaped part 2 are respectively fitted into the I-shaped sliding tube 3; The first I-shaped part 1 and the I-shaped sliding tube 3 are connected by fastener 8 passing through the first connecting hole 5 and the third connecting hole 7. The second I-shaped part 2 and the I-shaped sliding tube 3 are connected by fastener 8 passing through the second connecting hole 6 and the third connecting hole 7.

[0026] As a further embodiment of this embodiment, limit blocks 9 are provided on the first I-shaped part 1 and the second I-shaped part 2; The limiting block 9 is used to abut against the I-shaped sliding tube 3 after the first I-shaped part 1 and the second I-shaped part 2 are inserted into the I-shaped sliding tube 3.

[0027] like Figure 6 As shown, as a further embodiment of this example, a gap 10 is reserved between the inner wall of the I-shaped sliding tube 3 and the first I-shaped part 1 and the second I-shaped part 2, so as to make it more convenient to insert the first I-shaped part 1 and the second I-shaped part 2.

[0028] In a preferred embodiment of this invention, the gap 10 is not less than 1 mm and not more than 5 mm. A compensation plate 11 is provided inside the gap 10.

[0029] like Figures 4-5 As shown, as a further embodiment of this example, the I-shaped sliding tube 3 is further provided with an additional plate 12; The additional plate 12 is disposed at both ends of the I-shaped sliding tube 3, and the additional plate 12 is fixedly connected to the flange 13 and web 14 of the I-shaped sliding tube 3.

[0030] As a further embodiment of this example, the first connecting hole 5, the second connecting hole 6 and the third connecting hole 7 are prefabricated in the factory.

[0031] As a further embodiment of this example, the first connecting hole 5, the second connecting hole 6 and the third connecting hole 7 are formed by drilling holes after the first I-shaped part 1 and the second I-shaped part 2 are inserted into the I-shaped sliding tube 3.

[0032] As a further embodiment of this example, the first connecting hole 5, the second connecting hole 6 and the third connecting hole 7 are respectively disposed on the flange 13 and web 14 of the first I-shaped part 1, the second I-shaped part 2 and the I-shaped sliding tube 3.

[0033] In this embodiment, the prefabricated reinforcement node of the large-span I-beam truss is assembled by having an I-shaped sliding tube 3 encased in the first I-beam 1 and the second I-beam 2. To achieve the best fastening effect, holes are drilled and fastened at the flanges 13 and webs 14 of the I-shaped sliding tube 3, the first I-beam 1, and the second I-beam 2.

[0034] To facilitate installation, a reserved gap 10 is provided between the I-shaped sliding tube 3 and the I-shaped component. After the I-shaped component is inserted into the I-shaped sliding tube 3, a compensation plate 11 is added. If the gap 10 is too large, the load-bearing capacity of the quick-reinforcement node will be weak; if the gap 10 is too small, installation will be inconvenient. Based on the above issues, the gap 10 should not be less than 1 mm and not more than 5 mm.

[0035] This embodiment proposes a prefabricated reinforcement node for a large-span I-beam truss, whose core components include a first I-beam 1, a second I-beam 2, and an I-beam sliding tube 3. The I-beam sliding tube 3 has an I-beam groove 4 inside. The ends of the first I-beam 1 and the second I-beam 2 are respectively provided with a first connecting hole 5 and a second connecting hole 6. The I-beam sliding tube 3 has a third connecting hole 7 at a position corresponding to the aforementioned two connecting holes. During assembly, the ends of the first I-beam 1 and the second I-beam 2 are respectively fitted into the I-beam sliding tube 3, and then fasteners 8 are used to pass through the first connecting hole 5 and the third connecting hole 7, and the second connecting hole 6 and the third connecting hole 7, respectively, to achieve the connection between the first I-beam 1 and the I-beam sliding tube 3, and between the second I-beam 2 and the I-beam sliding tube 3. This prefabricated reinforcement node for a large-span I-beam truss cleverly utilizes the key component, the I-beam sliding tube 3. The I-shaped groove 4 inside the I-shaped sliding tube 3 provides precise guidance and positioning for the insertion of the first I-shaped component 1 and the second I-shaped component 2, ensuring the accuracy and stability of the splicing process. During the splicing process, the I-shaped sliding tube 3 acts as an outer casing, connecting the first I-shaped component 1 and the second I-shaped component 2 together to form a complete structural system. A strong connection between the three components is achieved by fasteners 8 passing through corresponding connection holes. This connection method is not only simple to operate but also ensures that the reinforced node has high strength and stability, meeting the needs of various engineering applications. To ensure that the first I-shaped component 1 and the second I-shaped component 2 reach the accurate position after being inserted into the I-shaped sliding tube 3, this embodiment provides limiting blocks 9 on the first I-shaped component 1 and the second I-shaped component 2. When the I-shaped component is inserted into the I-shaped sliding tube 3, the limiting block 9 abuts against the I-shaped sliding tube 3, thereby restricting further movement of the I-shaped component and ensuring the accuracy and consistency of the splicing. This design avoids problems such as weak splicing or structural instability caused by the I-shaped component being inserted too deeply or too shallowly, improving the quality and reliability of the reinforced node. To facilitate installation, a certain gap 10 is reserved between the inner wall of the I-shaped sliding tube 3 and the first I-shaped component 1 and the second I-shaped component 2. This gap 10 allows the I-shaped component to be inserted into the I-shaped sliding tube 3 more easily during the splicing process, reducing the difficulty and time of installation. However, if the gap 10 is too large, it will affect the load-bearing capacity of the quick-reinforcement node, while if the gap 10 is too small, it will be inconvenient to install. In order to balance the relationship between ease of installation and load-bearing capacity, this embodiment specifies that the gap 10 is not less than 1 mm and not more than 5 mm. At the same time, a compensation plate 11 is set in the gap 10. After the I-shaped component is inserted into the I-shaped sliding tube 3, the compensation plate 11 is added to fill the gap 10, further improving the tightness and load-bearing capacity of the reinforced node. An additional plate 12 is also provided on the I-shaped sliding tube 3. The additional plate 12 is located at both ends of the I-shaped sliding tube 3 and is fixedly connected to the flange 13 and web 14 of the I-shaped sliding tube 3.The addition of plate 12 enhances the structural strength and stability of the I-shaped sliding tube 3, allowing the reinforced node to distribute stress more evenly when subjected to external forces, reducing local stress concentration, and thus improving the load-bearing capacity and service life of the entire reinforced node. Regarding the arrangement of the first connecting hole 5, the second connecting hole 6, and the third connecting hole 7, this embodiment provides two options. One is factory prefabrication, where the connecting holes are pre-drilled at the corresponding positions during production. This method ensures the positional accuracy and quality consistency of the connecting holes, improving splicing efficiency. The other is to form the holes after the first I-shaped component 1 and the second I-shaped component 2 are inserted into the I-shaped sliding tube 3. This method can be flexibly adjusted according to actual conditions to adapt to different splicing requirements. Regardless of the method used, the connecting holes are respectively set on the flanges 13 and webs 14 of the first I-shaped part 1, the second I-shaped part 2, and the I-shaped sliding tube 3, to ensure that during splicing, holes can be drilled and tightened at the flanges 13 and webs 14 of the I-shaped sliding tube 3, the first I-shaped part 1, and the second I-shaped part 2, thereby achieving the best tightening effect and ensuring the overall strength and stability of the reinforced node.

[0036] In the actual assembly process, the ends of the first I-shaped component 1 and the second I-shaped component 2 are first inserted into the I-shaped sliding tube 3. Due to the pre-reserved gap 10, the insertion process is relatively smooth. After the I-shaped components are inserted into the appropriate positions (determined by the corresponding positions of the limiting block 9 or the holes), fasteners 8 are used to pass through the corresponding connecting holes according to the pre-set connection hole positions (whether prefabricated in the factory or drilled on-site), firmly connecting the first I-shaped component 1 to the I-shaped sliding tube 3 and the second I-shaped component 2 to the I-shaped sliding tube 3. Regarding the control of the gap 10, by strictly controlling the size of the gap 10 between 1mm and 5mm, both the ease of installation and the reduction in load-bearing capacity caused by an excessively large gap 10 are ensured. Simultaneously, the addition of a compensation plate 11 further optimizes the structural performance of the reinforced node, enabling it to better adapt to various complex engineering environments and stress conditions.

[0037] By adopting the above technical solution, the present invention has the following beneficial effects: (1) The I-shaped sliding tube 3 provides precise guidance and positioning. The I-shaped sliding tube 3 and the I-shaped part are connected by fasteners 8. The operation is simple and the reinforced node has high strength and stability, which meets the needs of engineering applications.

[0038] (2) A reasonable gap 10 is reserved between the I-shaped sliding tube 3 and the I-shaped part to facilitate the insertion of the I-shaped part, reduce the difficulty and time of installation, and balance the ease of installation and the load-bearing capacity requirements.

[0039] (3) A compensation plate 11 is installed in the gap 10 to fill the gap 10, improve the tightness and load-bearing capacity of the reinforced node; the I-shaped sliding tube 3 is equipped with an additional plate 12 to enhance its structural strength and stability, so that the reinforced node can distribute stress more evenly, reduce local stress concentration, and improve load-bearing capacity and service life.

[0040] (4) Two connection hole setting methods are provided: factory prefabrication and on-site drilling. Factory prefabrication can ensure positional accuracy and quality consistency, and improve splicing efficiency; on-site drilling can be flexibly adjusted according to actual conditions to adapt to different splicing needs, ensure the best fastening effect, and guarantee the overall strength and stability of the reinforced node.

[0041] Example 2 like Figures 7-9 As shown, this embodiment is a further improvement of embodiment 1. When splicing a large-span steel truss system using the reinforcement nodes described in embodiment 1, the bolt hole positions may shift axially due to factors such as construction accuracy or material properties like thermal expansion and contraction. Specifically, the first connecting hole 5 and the second connecting hole 6 (hereinafter referred to as inner hole 16 since both are located on the inner side) may shift relative to the third connecting hole 7 (hereinafter referred to as outer hole 15 since it is located on the outer side), causing the fastener 8 to be unable to pass through the outer hole 15 and the inner hole 16. The specific technical solution proposed in this embodiment is as follows.

[0042] The diameter of the outer hole 15 is larger than the diameter of the inner hole 16; An eccentric circular pad 17 is placed inside the outer hole 15; The outer ring of the eccentric annular pad 17 fits into the wall of the outer hole 15; The inner ring of the eccentric annular pad 17 coincides with the inner hole 16.

[0043] As a further embodiment of this example, the diameter of the outer hole 15 is the same at different heights of the hole wall.

[0044] The outer ring of the eccentric annular pad 17 that matches the outer hole 15 is also cylindrical. This structure is suitable for the working condition where the I-shaped sliding tube 3 only bears axial force.

[0045] like Figure 10 As shown in the figure, as a further embodiment of this invention, the cross-section of the outer hole 15 is conical, and the outer ring of the eccentric annular pad 17 is also conical. In this structure, the fastener 8 can not only transmit shear force through the eccentric annular pad 17, but the presence of the conical surface can also limit the deformation of the I-shaped sliding tube 3 and the eccentric annular pad 17 along the axial direction of the fastener 8. This is suitable for situations where the reinforcement node needs to withstand shear force and bending moment in addition to axial force.

[0046] like Figure 11 As shown, in a further embodiment of this invention, the outer hole 15 has a countersunk hole structure, and the shape of the eccentric annular pad 17 corresponds to the countersunk hole. In this structure, the fastener 8 can not only transmit shear force through the eccentric annular pad, but the presence of the upper flange 18 surface can also limit the deformation of the I-shaped sliding tube 3 and the eccentric annular pad 17 along the axial force direction of the fastener 8, which is suitable for working conditions where the hole wall of the fastener 8 is deep.

[0047] like Figure 12 As shown, as a further embodiment of this example, the eccentric annular pad 17 further includes an upper flange 18; The upper flange 18 is vertically positioned above the outer surface of the I-shaped sliding tube 3; The diameter of the upper flange 18 is greater than the outermost diameter of the outer hole 15.

[0048] In this structure, the fastener 8 can not only transmit shear force through the eccentric ring pad 17, but the presence of the upper flange 18 surface can also limit the deformation of the I-shaped sliding tube 3 and the eccentric ring pad 17 along the axial force direction of the fastener 8. Unlike the above-mentioned modification of the hole wall shape, this embodiment is suitable for cases where the bolt hole wall is slightly modified, and it is also possible to combine it with the embodiment for modifying the hole wall shape.

[0049] By adopting the above technical solution, the present invention has the following beneficial effects: (1) By setting the outer hole 15 to be larger than the inner hole 16, and placing an eccentric ring pad 17 in the outer hole 15, so that its outer ring fits with the wall of the outer hole 15 and its inner ring coincides with the inner hole 16, the problem of the bolt hole position shifting axially due to construction accuracy or material properties, which prevents the fastener 8 from passing through the outer hole 15 and the inner hole 16, is effectively solved, ensuring the smooth splicing of the large-span steel truss system.

[0050] (2) The outer ring of the eccentric ring pad 17 with equal diameter and fitting at different heights of the outer hole 15 is cylindrical, which is suitable for the working condition where the I-type sliding tube 3 only bears axial force, and meets the splicing requirements under specific stress conditions.

[0051] (3) The outer hole 15 has a tapered cross section and the outer ring of the eccentric ring pad 17 is also tapered. This allows the fastener 8 to transmit shear force through the eccentric ring pad 17. The tapered surface can also limit the deformation of the I-shaped sliding tube 3 and the eccentric ring pad 17 along the axial direction of the fastener 8. This is suitable for situations where the reinforcement node needs to withstand multiple forces, thus improving the applicability and stability of the reinforcement node.

[0052] (4) The outer hole 15 has a countersunk hole structure and the eccentric ring pad 17 has a corresponding shape, which also enables the fastener 8 to transmit shear force through the eccentric ring. The upper flange 18 surface can also restrict the deformation of the I-shaped sliding tube 3 and the eccentric ring pad 17 along the axial force direction of the fastener 8, which is suitable for the working condition where the hole wall of the fastener 8 is deep.

[0053] (5) The eccentric ring pad 17 is provided with an upper flange 18, which is vertically higher than the outer surface of the I-shaped sliding tube 3 and has a diameter larger than the outermost diameter of the outer hole 15. This not only allows the fastener 8 to transmit shear force through the eccentric ring pad 17, but the upper flange 18 can also restrict the deformation of the I-shaped sliding tube 3 and the eccentric ring pad 17 along the axial force direction of the fastener 8. This structure is suitable for situations where the bolt hole wall is modified in a small way, and it can also be combined with other implementation methods for modifying the hole wall shape, providing a more flexible and diverse solution for actual engineering.

[0054] Example 3 like Figures 13-18 As shown, this embodiment discloses a measuring device for the eccentricity between the inner hole 16 and the outer hole 15 in Embodiment 2. In actual construction, the eccentricity described in Embodiment 2 may vary, therefore, various eccentric ring pads 17 with different eccentricities are prepared during construction. However, determining which eccentric ring pad 17 to use requires sequential comparison with the outer hole 15 and the inner hole 16, which is quite inconvenient and severely affects construction efficiency. Therefore, this embodiment discloses a device for measuring eccentricity, including a bottom mold 21 and calipers 22. The bottom mold 21 is a cylindrical structure and is fixedly provided with a handle 23; The bottom mold 21 is provided with a measuring groove 24 and a measuring scale 25; The measuring groove 24 is a long strip-shaped through groove, and the measuring scale 25 is disposed on the side of the long strip-shaped through groove; The center of the elongated through groove coincides with the circle of the bottom mold 21. The measurement scale 25 marked on the side at this point has a value of 0. The distance from this point to the scale values ​​on both sides is the distance from this point to the center. The width of the caliper 22 is equal to the diameter of the inner hole 16; The thickness of the caliper 22 is less than or equal to the width of the measuring groove 24; A pointer 26 is provided at the center of the width of the caliper 22; After the bottom mold 21 is placed into the outer hole 15, the length direction of the measuring groove 24 is made parallel to the axial direction of the I-shaped sliding tube 3. The caliper 22 is then inserted and enters the inner hole 16. The scale value indicated by the pointer 26 on the measuring scale 25 is the offset between the virtual axis 19 of the outer hole center and the virtual axis 20 of the inner hole center.

[0055] Once the offset is measured, the corresponding eccentric annular pad 17 can be directly selected and placed into the outer hole 15 based on the offset. Furthermore, the offsets of each outer hole 15 and inner hole 16 are equal at a single reinforcement node, therefore, only one measurement is needed at each node.

[0056] By adopting the above technical solution, the present invention has the following beneficial effects: (1) This device solves the tedious problem of having to compare various eccentricity eccentric ring pads 17 with the outer hole 15 and inner hole 16 in turn during construction. The eccentricity can be quickly determined by this measuring device, and then the appropriate eccentric ring pad 17 can be selected quickly, which significantly improves the construction efficiency.

[0057] (2) The bottom mold 21 is equipped with a measuring groove 24 and a measuring scale 25. The caliper 22 is used in conjunction to intuitively and accurately measure the offset between the virtual axis 19 of the outer hole center and the virtual axis 20 of the inner hole center. The operation is simple and the results are reliable.

[0058] (3) At a reinforced node, the offset of each outer hole 15 and inner hole 16 is equal, so only one measurement is needed at each node, avoiding repeated measurement and further saving time and manpower costs.

[0059] Example 4 This embodiment provides a construction method for prefabricated reinforcement nodes of large-span I-beam trusses, including the following steps: S1: Preliminary preparation procedures; S2: Insert the first I-shaped part 1 and the second I-shaped part 2 into the I-shaped sliding tube 3; S3: Connected via fastener 8.

[0060] As a further implementation of this embodiment, step S3 specifically includes: S31: Measure the offset between the virtual axis 19 of the outer hole center and the virtual axis 20 of the inner hole center; S32: Select the appropriate eccentric ring pad 17 according to the offset and place it in the outer hole 15; S33: Fastener 8 passes through the outer hole 15 and the inner hole 16 and is fastened.

[0061] As a further implementation of this embodiment, step S31 specifically includes: S311: Place the bottom mold 21 into the inner hole 16, and make the length direction of the measuring groove 24 parallel to the axial direction of the I-shaped sliding tube 3; S312: Insert caliper 22, so that caliper 22 enters the inner hole 16 and the pointer 26 abuts against the bottom mold 21; S313: Read the scale value on the measurement scale 25 indicated by pointer 26, which is the offset.

[0062] By adopting the above technical solution, the present invention has the following beneficial effects: (1) A complete set of prefabricated reinforcement node construction methods for large-span I-shaped trusses is provided. Through standardized pre-preparation, insertion of I-shaped parts and fastener connection, the assembly time can be significantly shortened and the efficient and rapid splicing of I-shaped cross-section parts can be achieved.

[0063] (2) In the fastener 8 connection step, by measuring the offset between the outer hole 15 and the virtual axis 20 of the inner hole center, and selecting a suitable eccentric ring pad 17 according to the offset, the first I-shaped part 1 and the second I-shaped part 2 can be accurately positioned in the I-shaped sliding tube 3, thereby ensuring the connection quality and improving the accuracy and stability of the assembly.

[0064] (3) The specific steps for measuring the offset are reasonably designed. By using the bottom mold 21, caliper 22 and measuring scale 25 together, the measurement process is simplified and the measurement difficulty is reduced, enabling operators to obtain offset data more quickly and accurately, providing strong support for subsequent assembly work.

[0065] Example 5 like Figure 19 As shown, this embodiment discloses an eccentric annular pad 27 to replace the eccentric annular pad 17 in embodiment 2. Unlike embodiment 2, the eccentric annular pad 27 in this embodiment is an adjustable structure.

[0066] The eccentric annular gasket 27 includes an outer ring 28 and an inner ring 29 sleeved inside the outer ring 28; The outer ring 28 and the inner ring 29 are connected by an elastic element 30; The outer wall diameter of the outer ring 28 is less than or equal to the diameter of the outer hole 15; The height of the outer ring 28 is the same as the height of the outer hole 15; The outer wall diameter of the inner ring 29 is less than or equal to the diameter of the inner hole 16.

[0067] During installation, the eccentric annular gasket 27 is placed inside the outer hole 15, the fastener 8 is inserted into the inner ring 29 and moved so that the fastener 8 is further inserted into the inner hole 16.

[0068] As a further embodiment of this example, the lower part of the inner ring 29 extends beyond the lower surface of the outer ring 28, and is used to extend into the inner hole 16 for limiting.

[0069] like Figures 20-21 As shown, as a further embodiment of this example, a wedge block 31 is also provided between the outer ring 28 and the inner ring 29; The wedge 31, by being struck and wedged between the outer ring 28 and the inner ring 29, serves to further limit the movement.

[0070] like Figure 22 As shown, as a further embodiment of this example, the inner wall of the outer ring 28 is inclined relative to the wedge block 31, tending to fit against the side of the wedge block 31.

[0071] like Figure 22 As shown, as a further embodiment of this embodiment, a locking tooth 32 is provided on the inner wall of the outer ring 28 at a position opposite to the wedge block 31; The wedge block 31 is provided with snap-fit ​​texture 33; After the wedge 31 enters between the outer ring 28 and the inner ring 29, the locking teeth 32 engage with the locking grooves 33 to prevent relative movement between the wedge 31 and the inner wall of the outer ring 28.

[0072] like Figure 22 As shown, as a further embodiment of this example, the outer wall of the inner ring 29 is inclined relative to the wedge block 31, tending to fit against the side of the wedge block 31.

[0073] like Figures 22-23 As shown, as a further embodiment of this embodiment, a locking tooth 32 is provided on the outer wall of the inner ring 29 at a position opposite to the wedge block 31; The wedge block 31 is provided with snap-fit ​​texture 33; After the wedge 31 enters between the outer ring 28 and the inner ring 29, the locking teeth 32 engage with the locking grooves 33 to prevent relative movement between the wedge 31 and the outer wall of the inner ring 29.

[0074] As a further embodiment of this embodiment, the locking tooth 32 is a ratchet structure with the tips of the ratchet teeth facing downwards, so that the wedge block 31 encounters less resistance when entering between the outer ring 28 and the inner ring 29, but encounters greater resistance when leaving between the outer ring 28 and the inner ring 29.

[0075] like Figure 24 As shown, in a further embodiment of this example, the end of the fastener 8 abuts against the wedge block 31. During the operation of the reinforced node, the fastener 7 presses against the wedge block 31, preventing the wedge block 31 from sliding out between the inner ring 28 and the outer ring 28.

[0076] The wedge 31 can have different sizes (e.g. Figure 24 As shown), it can also have wedges 31 with varying depths but the same size.

[0077] In this embodiment, the locking teeth 32 on the outer ring 28 and the inner ring 29 have different functions, and their functions occur at different stages. When the wedge 31 is wedged between the inner ring 29 and the outer ring 28, the inner ring 29 exerts no significant additional force on the wedge 31. At this time, the locking teeth 32 on the outer ring 28 and the locking grooves 33 on the wedge 31 provide locking and limiting. After the wedge 31 is fully inserted, the fastener 8 is installed. The nut at the end of the fastener 8 presses the inner ring 29 downward, causing the outer wall of the inner ring 29 to further adhere to the wedge 31. At this time, the locking grooves 33 on the wedge 31 are locked by the locking teeth 32 on the inner ring 29, preventing the wedge 31 from loosening. In addition, the ratchet structure can effectively reduce the resistance during the wedging process of the wedge 31 and prevent the possibility of the wedge 31 loosening.

[0078] In practical engineering, most errors can be compensated for using the apparatus and methods described in Examples 2-4. However, for some special error situations, such as a misalignment at a particular fastener 8 connection point due to a production error, it would be relatively inconvenient to remeasure the eccentricity at each individual point and select the corresponding eccentric ring pad 17. In such cases, the deviation can be corrected using the method described in this embodiment. Furthermore, for deviations between eccentric ring pads 17 of different specifications, the eccentric ring sleeve 27 disclosed in this embodiment can also be used to correct the deviation.

[0079] By adopting the above technical solution, the present invention has the following beneficial effects: (1) The eccentric ring gasket 27 adopts an adjustable structure. Through the combination design of the outer ring 28 and the inner ring 29, it can adapt to the outer hole 15 and inner hole 16 of different sizes, which enhances the versatility and adaptability of the gasket and reduces installation problems caused by size mismatch.

[0080] (2) The inner ring 29 extends into the inner hole 16 below for limiting, and is further wedged into the outer ring 28 and the inner ring 29 by the wedge block 31, which enhances the stability of the gasket in the outer hole 15 and effectively prevents the gasket from loosening or shifting during installation or use.

[0081] (3) The outer ring 28 and the inner ring 29 are connected to the wedge block 31 through the snap-fit ​​design of the snap-fit ​​teeth 32 and the snap-fit ​​texture 33, which further improves the limiting effect. Especially after the fastener 8 is installed, the snap-fit ​​teeth 32 on the outer wall of the inner ring 29 can effectively snap the wedge block 31 to prevent it from loosening, thus ensuring the stability and safety of the entire structure.

[0082] (4) The ratchet structure of the locking teeth 32 not only reduces the resistance during the wedging process of the wedge 31, but also effectively prevents the wedge 31 from loosening after installation, simplifying the installation operation and improving work efficiency.

[0083] Example 6 like Figure 25 As shown, this embodiment discloses a building system with prefabricated reinforcement nodes of large-span I-shaped truss members disclosed in the above embodiment, including standard parts 34 and reinforcement nodes 35; Adjacent standard parts 34 are connected by reinforcing nodes 35.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A prefabricated joint for large-span I-beam members based on an eccentric circular ring bushing, characterized in that, It includes a first I-shaped part, a second I-shaped part, and an I-shaped sliding tube; The I-shaped sliding tube is provided with an I-shaped groove; The first I-shaped part and the second I-shaped part are respectively provided with a first connecting hole and a second connecting hole at their ends; The I-shaped sliding tube and the first connecting hole are provided with a third connecting hole at the corresponding positions of the second connecting hole; The ends of the first I-shaped part and the second I-shaped part are respectively fitted into the I-shaped sliding tube; The first I-shaped part and the I-shaped sliding tube are connected by fasteners passing through the first and third connecting holes. The second I-shaped part and the I-shaped sliding tube are connected by fasteners passing through the second and third connecting holes; The first connecting hole and the second connecting hole are external holes, and the third connecting hole is an internal hole; The outer hole diameter is larger than the inner hole diameter; An eccentric circular ring washer was placed inside the outer hole; The eccentric annular gasket includes an outer ring and an inner ring fitted inside the outer ring; The outer ring and the inner ring are connected by an elastic element; The outer wall diameter of the outer ring is less than or equal to the outer hole diameter; The height of the outer ring is the same as the height of the outer hole; The outer wall diameter of the inner ring is less than or equal to the inner hole diameter.

2. The prefabricated node for large-span I-shaped members based on eccentric circular ring bushings according to claim 1, characterized in that, Limit blocks are provided on the first and second molded parts; The limiting block is used to abut against the I-shaped sliding tube after the first I-shaped part and the second I-shaped part are inserted into the I-shaped sliding tube.

3. The prefabricated node for large-span I-beam members based on an eccentric circular ring bushing as described in claim 1, characterized in that, A gap is reserved between the inner wall of the I-shaped sliding tube and the first I-shaped part and the second I-shaped part to make it easier to insert the first I-shaped part and the second I-shaped part; The gap is not less than 1mm and not more than 5mm; A compensation plate is provided within the gap.

4. The prefabricated node for large-span I-shaped members based on eccentric circular ring bushings according to claim 1, characterized in that, An additional plate is also provided on the I-shaped sliding tube; The additional plates are disposed at both ends of the I-shaped sliding tube, and the additional plates are fixedly connected to the flanges and webs of the I-shaped sliding tube.

5. The prefabricated node for large-span I-shaped members based on an eccentric circular ring bushing as described in claim 1, characterized in that, The first connecting hole, the second connecting hole, and the third connecting hole are prefabricated in the factory; Alternatively, the first connecting hole, the second connecting hole, and the third connecting hole are formed by drilling holes after the first I-shaped part and the second I-shaped part are inserted into the I-shaped sliding tube.

6. The prefabricated node for large-span I-shaped members based on eccentric circular ring bushings according to claim 1, characterized in that, The first connecting hole, the second connecting hole, and the third connecting hole are respectively disposed on the flange and web of the first I-shaped part, the second I-shaped part, and the I-shaped sliding tube.

7. The prefabricated node for large-span I-beam members based on an eccentric circular ring bushing according to claim 1, characterized in that, The lower part of the inner ring extends beyond the lower surface of the outer ring, and is used to extend into the inner hole for limiting its position.

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