An assembled reinforcing joint of a large-span I-shaped bar truss and a construction method thereof

Abstract

The application relates to the technical field of building structures, in particular to a large-span I-shaped bar truss assembly type reinforcing joint, a construction method and a building system, wherein the large-span I-shaped bar truss assembly type reinforcing joint comprises a first I-shaped piece, a second I-shaped piece and an I-shaped sliding pipe; an I-shaped groove is arranged in the I-shaped sliding pipe; a first connecting hole and a second connecting hole are respectively arranged at the end of the first I-shaped piece and the end of the second I-shaped piece; a third connecting hole is arranged at the corresponding position of the I-shaped sliding pipe, the first connecting hole and the second connecting hole; the end of the first I-shaped piece and the end of the second I-shaped piece are respectively sleeved into the I-shaped sliding pipe; the first I-shaped piece and the I-shaped sliding pipe are connected through fasteners penetrating through the first connecting hole and the third connecting hole; and the second I-shaped piece and the I-shaped sliding pipe are connected through fasteners penetrating through the second connecting hole and the third connecting hole.

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. In order to realize 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 a rivet to penetrate the reserved hole 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-accurate drilling is required for bolt or rivet connection, and hole deviation can easily lead to connection failure; single bolt fastening is time-consuming, and the efficiency of multi-bolt connection decreases exponentially with the number. In addition, the hole will weaken the cross-section of the I-shaped member, reducing the shear capacity; high stress concentration can easily cause fatigue failure. SUMMARY

[0005] 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.

[0006] 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.

[0007] The I-shaped sliding tube is provided with an I-shaped groove;

[0008] The first I-shaped member and the second I-shaped member are respectively provided with a first connecting hole and a second connecting hole at the end part;

[0009] 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;

[0010] The end part of the first I-shaped member and the end part of the second I-shaped member are respectively sleeved into the I-shaped sliding tube;

[0011] connecting the first profiled member and the profiled sliding tube through the first connecting hole and the third connecting hole by fasteners;

[0012] connecting the second profiled member and the profiled sliding tube through the second connecting hole and the third connecting hole by fasteners.

[0013] Further, the first profiled member and the second profiled member are provided with limiting blocks.

[0014] The limiting blocks are used to abut against the profiled sliding tube after the first profiled member and the second profiled member are inserted into the profiled sliding tube.

[0015] Further, a gap is reserved between the inner wall of the profiled sliding tube and the first profiled member and the second profiled member, so as to make the first profiled member and the second profiled member more convenient to insert.

[0016] Preferably, the gap is not less than 1 mm and not more than 5 mm.

[0017] A compensation plate is arranged in the gap.

[0018] Further, the profiled sliding tube is further provided with an additional plate.

[0019] The additional plate is arranged at both ends of the profiled sliding tube, and the additional plate is fixedly connected with the flange and the web of the profiled sliding tube.

[0020] Further, the first connecting hole, the second connecting hole and the third connecting hole are prefabricated in the factory.

[0021] Further, the first connecting hole, the second connecting hole and the third connecting hole are formed by punching after the first profiled member and the second profiled member are inserted into the profiled sliding tube.

[0022] Further, the first connecting hole, the second connecting hole and the third connecting hole are respectively arranged on the flange and the web of the first profiled member, the second profiled member and the profiled sliding tube.

[0023] In another aspect, the application further discloses a building system of a fabricated reinforcing joint of a large-span I-shaped member truss.

[0024] In another aspect, the application further discloses a construction method of a fabricated reinforcing joint of a large-span I-shaped member truss. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort.

[0026] Figure 1 A perspective structural schematic view of the fabricated reinforcing joint of the large-span I-shaped member truss disclosed in the present application;

[0027] Figure 2 An exploded view of the fabricated reinforcing joint of the large-span I-shaped member truss disclosed in the present application;

[0028] Figure 3 A perspective structural schematic view of the fabricated reinforcing joint of the large-span I-shaped member truss disclosed in the present application during installation;

[0029] Figure 4 A perspective structural schematic view of the fabricated reinforcing joint of the large-span I-shaped member truss with the added plate;

[0030] Figure 5 A perspective structural schematic view of the I-shaped sliding tube with the added plate;

[0031] Figure 6 A plan structural schematic view of the fabricated reinforcing joint of the large-span I-shaped member truss with the added plate;

[0032] Figure 7 A schematic view of the eccentricity between the inner hole and the outer hole;

[0033] Figure 8 A schematic view of the outer hole center virtual axis and the inner hole center virtual axis of the eccentric circular ring gasket;

[0034] Figure 9 A plan cross-sectional view of the first eccentric circular ring gasket after assembly in Example 2;

[0035] Figure 10 A plan cross-sectional view of the second eccentric circular ring gasket after assembly in Example 2;

[0036] Figure 11 A plan cross-sectional view of the third eccentric circular ring gasket after assembly in Example 2;

[0037] Figure 12 A plan cross-sectional view of the fourth eccentric circular ring gasket after assembly in Example 2;

[0038] Figure 13Top view of the base mold;

[0039] Figure 14 Front view of the base mold;

[0040] Figure 15 Top view of the pawl;

[0041] Figure 16 Front view of the pawl;

[0042] Figure 17 Top view of the base mold and the pawl in use;

[0043] Figure 18 Front view of the base mold and the pawl in use;

[0044] Figure 19 Top view of the eccentric ring gasket;

[0045] Figure 20 Top view of the eccentric ring gasket with the wedge block wedged in;

[0046] Figure 21 Front view of the eccentric ring gasket with the wedge block wedged in;

[0047] Figure 22 Front view of the eccentric ring gasket with the pawl;

[0048] Figure 23 Front view of the eccentric ring gasket with the pawl in clamping with the wedge block;

[0049] Figure 24 Structural schematic diagram of the wedge block being clamped by the fastener;

[0050] Figure 25 Three-dimensional structural schematic diagram of a building system of an assembled reinforcing joint with a large-span I-shaped beam truss.

[0051] Reference signs:

[0052] 1-first I-shaped member; 2-second I-shaped member; 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-clearance; 11-compensation plate; 12-additional plate; 13-flange; 14-web; 15-outer hole; 16-inner hole; 17- eccentric ring gasket; 18-upper end flange; 19-center virtual axis of the outer hole; 20-center virtual axis of the inner hole; 21-base mold; 22-pawl; 23-handle; 24-measuring groove; 25-measuring scale; 26-pointer; 27- eccentric ring gasket; 28-outer ring; 29-inner ring; 30-elastic member; 31-wedge block; 32-pawl; 33-clamping texture; 34-standard part; 35-reinforcing joint. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] The present invention will be further explained below with reference to specific embodiments.

[0058] Example 1

[0059] 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;

[0060] The I-shaped sliding tube 3 is provided with an I-shaped groove 4;

[0061] 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;

[0062] The third connecting hole 7 is arranged at the corresponding position of the first connecting hole 5 and the second connecting hole 6 of the profiled sliding pipe 3.

[0063] The first profiled piece 1 and the second profiled piece 2 are respectively sleeved into the profiled sliding pipe 3.

[0064] The first profiled piece 1 and the profiled sliding pipe 3 are connected by the fastener 8 passing through the first connecting hole 5 and the third connecting hole 7.

[0065] The second profiled piece 2 and the profiled sliding pipe 3 are connected by the fastener 8 passing through the second connecting hole 6 and the third connecting hole 7.

[0066] As a further embodiment of the present embodiment, the first profiled piece 1 and the second profiled piece 2 are provided with a limiting block 9.

[0067] The limiting block 9 is used to abut against the profiled sliding pipe 3 after the first profiled piece 1 and the second profiled piece 2 are inserted into the profiled sliding pipe 3.

[0068] As shown in Figure 6 As a further embodiment of the present embodiment, a gap 10 is reserved between the inner wall of the profiled sliding pipe 3 and the first profiled piece 1 and the second profiled piece 2, so as to make the insertion of the first profiled piece 1 and the second profiled piece 2 more convenient.

[0069] As a preferred embodiment of the present embodiment, the gap 10 is not less than 1 mm and not more than 5 mm.

[0070] The gap 10 is provided with a compensation plate 11.

[0071] As shown in Figures 4-5 As a further embodiment of the present embodiment, the profiled sliding pipe 3 is further provided with an additional plate 12.

[0072] The additional plate 12 is arranged at both ends of the profiled sliding pipe 3, and the additional plate 12 is fixedly connected with the flange 13 and the web 14 of the profiled sliding pipe 3.

[0073] As a further embodiment of the present embodiment, the first connecting hole 5, the second connecting hole 6 and the third connecting hole 7 are prefabricated in the factory.

[0074] As a further embodiment of the present embodiment, the first connecting hole 5, the second connecting hole 6 and the third connecting hole 7 are formed by punching after the first profiled piece 1 and the second profiled piece 2 are inserted into the profiled sliding pipe 3.

[0075] As a further implementation of the present embodiment, the first connecting hole 5, the second connecting hole 6 and the third connecting hole 7 are respectively arranged on the flange 13 and the web 14 of the first I-shaped piece 1, the second I-shaped piece 2 and the I-shaped sliding tube 3.

[0076] The fabricated reinforcing node of the long-span I-shaped beam truss disclosed in the present embodiment is wrapped outside the first I-shaped piece 1 and the second I-shaped piece 2 when spliced. In order to achieve the best fastening effect, the flange 13 and the web 14 of the I-shaped sliding tube 3, the first I-shaped piece 1 and the second I-shaped piece 2 are all punched and fastened.

[0077] In order to facilitate installation, a reserved gap 10 is arranged between the I-shaped sliding tube 3 and the I-shaped piece, and after the I-shaped piece is inserted into the I-shaped sliding tube 3, a compensation plate 11 is additionally arranged. If the gap 10 is too large, the bearing capacity of the fastening node is weak, and if the gap 10 is small, it is not convenient to install. Based on the above problems, the gap 10 should be not less than 1 mm, and not more than 5 mm.

[0078] The embodiment proposes an assembled reinforcing node for large-span I-shaped member truss, which includes a first I-shaped member 1, a second I-shaped member 2, and an I-shaped sliding tube 3. The I-shaped sliding tube 3 has an I-shaped groove 4 inside. The first I-shaped member 1 and the second I-shaped member 2 have a first connecting hole 5 and a second connecting hole 6, respectively, at their ends. The I-shaped sliding tube 3 has a third connecting hole 7 at a position corresponding to the two connecting holes. During splicing, the first I-shaped member 1 and the second I-shaped member 2 are inserted into the I-shaped 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 realize the connection of the first I-shaped member 1 and the I-shaped sliding tube 3, and the second I-shaped member 2 and the I-shaped sliding tube 3. The assembled reinforcing node of the large-span I-shaped member truss skillfully uses the key component of the I-shaped sliding tube 3. The I-shaped groove 4 inside the I-shaped sliding tube 3 provides accurate guidance and positioning for the insertion of the first I-shaped member 1 and the second I-shaped member 2, ensuring the accuracy and stability of the splicing process. During the splicing process, the I-shaped sliding tube 3 acts as an outer package, connecting the first I-shaped member 1 and the second I-shaped member 2 together to form a complete structural system. By passing through the corresponding connecting holes with fasteners 8, a firm connection between the three is achieved. This connection method is not only simple to operate, but also can ensure that the reinforcing node has high strength and stability, meeting the needs of various engineering applications. To ensure that the first I-shaped member 1 and the second I-shaped member 2 can reach the correct position after being inserted into the I-shaped sliding tube 3, the embodiment provides a limiting block 9 on the first I-shaped member 1 and the second I-shaped member 2. When the I-shaped member is inserted into the I-shaped sliding tube 3, the limiting block 9 will abut against the I-shaped sliding tube 3, thereby limiting the further movement of the I-shaped member, ensuring the accuracy and consistency of splicing. This design avoids problems such as insecure splicing or unstable structure caused by the I-shaped member being inserted too deeply or too shallowly, improving the quality and reliability of the reinforcing node. Considering the convenience of installation, a certain gap 10 is reserved between the inner wall of the I-shaped sliding tube 3 and the first I-shaped member 1 and the second I-shaped member 2. The provision of this gap 10 makes it easier for the I-shaped member to be inserted into the I-shaped sliding tube 3 during splicing, reducing the difficulty and time of installation. However, if the gap 10 is too large, it will affect the bearing capacity of the quick reinforcing node, and if the gap 10 is too small, it will not be convenient to install. In order to balance the relationship between installation convenience and bearing capacity, the embodiment stipulates 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 provided in the gap 10, which is added after the I-shaped member is inserted into the I-shaped sliding tube 3 to fill the gap 10, further improving the tightness and bearing capacity of the reinforcing node. The I-shaped sliding tube 3 is also provided with an additional plate 12, which is located at both ends of the I-shaped sliding tube 3 and is fixedly connected with the flange 13 and web 14 of the I-shaped sliding tube 3.The setting of the added plate 12 enhances the structural strength and stability of the channel-shaped sliding pipe 3, so that the reinforced joint can more evenly disperse stress when bearing external force, reduces local stress concentration, thereby improving the carrying capacity and service life of the entire reinforced joint. Regarding the setting mode of the first connecting hole 5, the second connecting hole 6 and the third connecting hole 7, the embodiment provides two options. One is factory prefabrication, that is, the connecting hole is punched in the corresponding position in advance during the production process. This mode can ensure the position accuracy and quality consistency of the connecting hole and improve the splicing efficiency. The other is to punch the hole after the first channel-shaped piece 1 and the second channel-shaped piece 2 are inserted into the channel-shaped sliding pipe 3. This mode can be flexibly adjusted according to the actual situation and adapt to different splicing requirements. Regardless of which mode is adopted, the connecting holes are respectively arranged on the flange 13 and the web 14 of the first channel-shaped piece 1, the second channel-shaped piece 2 and the channel-shaped sliding pipe 3, so as to ensure that the flange 13 and the web 14 of the channel-shaped sliding pipe 3, the first channel-shaped piece 1 and the second channel-shaped piece 2 can be punched and fastened during splicing, thereby achieving the best fastening effect and ensuring the overall strength and stability of the reinforced joint.

[0079] In the actual splicing process, first, the first channel-shaped piece 1 and the second channel-shaped piece 2 are respectively sleeved into the channel-shaped sliding pipe 3. At this time, since the gap 10 is reserved, the insertion process is relatively smooth. After the channel-shaped pieces are inserted into the appropriate position (determined by the limiting block 9 or the corresponding hole), according to the pre-set connecting hole position (whether factory prefabrication or on-site punching), the fastener 8 is used to pass through the corresponding connecting hole to firmly connect the first channel-shaped piece 1 with the channel-shaped sliding pipe 3 and the second channel-shaped piece 2 with the channel-shaped sliding pipe 3. In terms of gap 10 control, by strictly controlling the size of the gap 10 to be between 1mm and 5mm, the convenience of installation is ensured, and the problem of reduced carrying capacity caused by too large gap 10 is avoided. At the same time, the added compensation plate 11 further optimizes the structural performance of the reinforced joint, so that it can better adapt to various complex engineering environments and stress conditions.

[0080] By adopting the above technical scheme, the present application has the following beneficial effects:

[0081] (1) The channel-shaped sliding pipe 3 provides precise guiding and positioning, and the channel-shaped sliding pipe 3 and the channel-shaped piece are connected by the fastener 8, which is simple to operate, so that the reinforced joint has high strength and stability and meets the engineering application requirements.

[0082] (2) A reasonable gap 10 is reserved between the channel-shaped sliding pipe 3 and the channel-shaped piece, which facilitates the insertion of the channel-shaped piece, reduces the installation difficulty and time, and balances the installation convenience and carrying capacity requirements.

[0083] (3) The compensation plate 11 is arranged in the gap 10 to fill the gap 10 and improve the tightness and bearing capacity of the reinforced joint; the additional plate 12 is arranged in the channel sliding pipe 3 to enhance the structural strength and stability, so that the reinforced joint can more evenly disperse stress, reduce local stress concentration, and improve the bearing capacity and service life.

[0084] (4) Two connection hole arrangement modes of factory prefabrication and on-site punching are provided; the factory prefabrication can ensure position accuracy and quality consistency and improve splicing efficiency; the on-site punching can be flexibly adjusted according to actual conditions to adapt to different splicing requirements, ensure the best fastening effect, and guarantee the overall strength and stability of the reinforced joint.

[0085] Embodiment 2

[0086] As shown in Figures 7-9 , this embodiment is a further improvement of Embodiment 1. When splicing a large-span steel truss system through the reinforced joint described in Embodiment 1, the bolt hole position may be offset in the axial direction due to construction precision or material properties such as thermal expansion and cold contraction. Specifically, the first connection hole 5 and the second connection hole 6 (since both the first connection hole 5 and the second connection hole 6 are located on the inner side, they are referred to as inner holes 16 below) and the third connection hole 7 (since the third connection hole 7 is located on the outer side, it is referred to as an outer hole 15 below) are offset, 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.

[0087] The outer hole 15 has a larger diameter than the inner hole 16;

[0088] The eccentric circular ring gasket 17 is placed in the outer hole 15;

[0089] The outer circle of the eccentric circular ring gasket 17 fits the hole wall of the outer hole 15;

[0090] The inner circle of the eccentric circular ring gasket 17 coincides with the inner hole 16.

[0091] As a further implementation of this embodiment, the diameters of the hole walls of the outer hole 15 at different heights are equal.

[0092] The outer circle of the eccentric circular ring gasket 17 that fits the outer hole 15 is also cylindrical, and this structure is suitable for the working condition where the channel sliding pipe 3 only bears axial force.

[0093] As shown in Figure 10As shown, as a further embodiment of the present embodiment, the outer hole 15 hole wall is tapered in cross section, and the outer ring of the eccentric ring gasket 17 is also tapered. In this configuration, the fastener 8 can not only transmit shear force through the eccentric ring gasket 17, but the presence of the tapered surface can also limit the deformation of the I-shaped sliding tube 3 and the eccentric ring gasket 17 in the axial direction of the fastener 8, which is suitable for the case where the reinforced joint needs to withstand not only axial force but also shear force and bending moment.

[0094] As shown, Figure 11 As a further embodiment of the present embodiment, the outer hole 15 has a counterbore structure, and the eccentric ring gasket 17 has a shape corresponding to the counterbore. In this configuration, the fastener 8 can not only transmit shear force through the eccentric ring, but the presence of the upper end flange 18 can also limit the deformation of the I-shaped sliding tube 3 and the eccentric ring gasket 17 in the axial direction of the fastener 8, which is suitable for the case where the hole wall of the fastener 8 is deep.

[0095] As shown, Figure 12 As a further embodiment of the present embodiment, the eccentric ring gasket 17 further includes an upper end flange 18;

[0096] The vertical position of the upper end flange 18 is higher than the outer surface of the I-shaped sliding tube 3;

[0097] The diameter of the upper end flange 18 is greater than the outermost diameter of the outer hole 15.

[0098] In this configuration, the fastener 8 can not only transmit shear force through the eccentric ring gasket 17, but the presence of the upper end flange 18 can also limit the deformation of the I-shaped sliding tube 3 and the eccentric ring gasket 17 in the axial direction of the fastener 8, which is different from the modification of the hole wall shape described above. This embodiment is suitable for cases where the bolt hole wall is less modified, and it is also not excluded from being combined with the embodiment of the modification of the hole wall shape.

[0099] By adopting the above technical scheme, the present application has the following beneficial effects:

[0100] (1) By setting the outer hole 15 hole diameter to be larger than the inner hole 16 hole diameter, and placing the eccentric ring gasket 17 in the outer hole 15, the outer ring of the eccentric ring gasket 17 fits the outer hole 15 hole wall, and the inner ring coincides with the inner hole 16, effectively solving the problem that the bolt hole position is offset in the axial direction due to construction precision or material properties, causing the fastener 8 to be unable to pass through the outer hole 15 and the inner hole 16, ensuring the smooth progress of the large-span steel truss system splicing.

[0101] (2) The outer hole 15 hole wall has an eccentric ring gasket 17 with equal diameters at different heights and a cylindrical structure that fits the outer hole 15 hole wall, which is suitable for the case where the I-shaped sliding tube 3 only bears axial force, meeting the splicing requirements under specific load conditions.

[0102] (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.

[0103] (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.

[0104] (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.

[0105] Example 3

[0106] 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.

[0107] The bottom mold 21 is a cylindrical structure and is fixedly provided with a handle 23;

[0108] The bottom mold 21 is provided with a measuring groove 24 and a measuring scale 25;

[0109] 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;

[0110] 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.

[0111] The width of the caliper 22 is equal to the diameter of the inner hole 16;

[0112] The thickness of the caliper 22 is less than or equal to the width of the measuring groove 24;

[0113] The center of the caliper 22 width is provided with a pointer 26;

[0114] After the bottom die 21 is put into the outer hole 15, the length direction of the measuring groove 24 is parallel to the axial direction of the work shape sliding pipe 3, the caliper 22 is inserted, the caliper 22 enters the inner hole 16, and the scale value indicated by the pointer 26 on the measuring scale 25 is the offset amount of the outer hole center virtual axis 19 and the inner hole center virtual axis 20.

[0115] When the offset amount is measured, the corresponding eccentric circular ring gasket 17 can be directly selected and put into the outer hole 15. The offset amounts of each outer hole 15 and inner hole 16 at one reinforcing node are equal, so it only needs to be measured once at each node.

[0116] By adopting the technical scheme, the present application has the following beneficial effects:

[0117] (1) The cumbersome problem of sequentially comparing the eccentric circular ring gasket 17 with the outer hole 15 and the inner hole 16 in the construction is solved, the eccentric distance can be quickly determined through the measuring device, and then the appropriate eccentric circular ring gasket 17 can be quickly selected, so that the construction efficiency is significantly improved.

[0118] (2) The bottom die 21 is provided with the measuring groove 24 and the measuring scale 25, and the caliper 22 is used in cooperation, so that the offset amount of the outer hole center virtual axis 19 and the inner hole center virtual axis 20 can be directly and accurately measured, the operation is simple, and the result is reliable.

[0119] (3) At one reinforcing node, the offset amounts of each outer hole 15 and inner hole 16 are equal, so it only needs to be measured once at each node, thereby avoiding repeated measurement and further saving time and labor cost.

[0120] Embodiment 4

[0121] The embodiment provides a construction method of a fabricated reinforcing node of a large-span I-shaped bar truss, including the following steps:

[0122] S1: preliminary preparation process;

[0123] S2: inserting the first work shape 1 and the second work shape 2 into the work shape sliding pipe 3;

[0124] S3: connecting through the fastener 8.

[0125] As a further implementation manner of the embodiment, the step S3 is specifically:

[0126] S31: measuring the offset between the outer hole center virtual axis 19 and the inner hole center virtual axis 20;

[0127] S32: selecting a corresponding eccentric circular ring gasket 17 according to the offset and placing it in the outer hole 15;

[0128] S33: fastening the fastener 8 through the outer hole 15 and the inner hole 16 and connecting them.

[0129] As a further implementation manner of the embodiment, the step S31 is specifically:

[0130] S311: placing the bottom die 21 into the inner hole 16 and making the length direction of the measuring groove 24 parallel to the axial direction of the profile sliding pipe 3;

[0131] S312: inserting the caliper 22, making the caliper 22 enter the inner hole 16, and making the pointer 26 abut against the bottom die 21;

[0132] S313: reading the scale value on the measuring scale 25 indicated by the pointer 26, which is the offset.

[0133] With the above technical solution, the present application has the following beneficial effects:

[0134] (1) A complete assembly type reinforcing node construction method for large-span I-shaped beam truss is provided, which can significantly shorten the assembly time and realize efficient and rapid splicing of the profiled section member through the steps of standardized preliminary preparation, insertion of the profiled member, and connection of the fastener 8.

[0135] (2) In the fastener 8 connection step, the offset between the outer hole 15 and the inner hole center virtual axis 20 is measured, and a suitable eccentric circular ring gasket 17 is selected according to the offset, which can ensure the accurate positioning of the first profiled member 1 and the second profiled member 2 in the profile sliding pipe 3, thereby ensuring the connection quality and improving the accuracy and stability of the assembly.

[0136] (3) The specific steps of measuring the offset are reasonable in design, the use of the bottom die 21, the caliper 22, and the measuring scale 25 simplifies the measurement process and reduces the measurement difficulty, so that the operator can obtain the offset data more quickly and accurately, which provides strong support for the subsequent assembly work.

[0137] Embodiment 5

[0138] As shown in the figure, the present embodiment discloses an eccentric circular ring gasket 27 for replacing the eccentric circular ring gasket 17 in embodiment 2, and the difference between the present embodiment and embodiment 2 is that the eccentric circular ring gasket 27 of the present embodiment is an adjustable structure. Figure 19

[0139] ​The eccentric circular ring gasket 27 comprises an outer ring 28 and an inner ring 29 sleeved in the outer ring 28;

[0140] The outer ring 28 and the inner ring 29 are connected by an elastic member 30;

[0141] The outer wall diameter of the outer ring 28 is less than or equal to the diameter of the outer hole 15;

[0142] The height of the outer ring 28 is the same as the height of the outer hole 15;

[0143] The outer wall diameter of the inner ring 29 is less than or equal to the diameter of the inner hole 16.

[0144] During installation, the eccentric circular ring gasket 27 is placed in 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.

[0145] As a further embodiment of the present embodiment, the position below the inner ring 29 exceeds the lower surface of the outer ring 28, for extending into the inner hole 16 for limiting.

[0146] As shown in Figures 20-21 As a further embodiment of the present embodiment, a wedge 31 is further arranged between the outer ring 28 and the inner ring 29;

[0147] The wedge 31 is knocked into the space between the outer ring 28 and the inner ring 29, and plays a further limiting role.

[0148] As shown in Figure 22 As a further embodiment of the present embodiment, the position of the inner wall of the outer ring 28 opposite to the wedge 31 is an inclined structure, which tends to fit the side surface of the wedge 31.

[0149] As shown in Figure 22 As a further embodiment of the present embodiment, a clamping tooth 32 is arranged on the position of the inner wall of the outer ring 28 opposite to the wedge 31;

[0150] The wedge 31 is arranged with a clamping groove 33;

[0151] After the wedge 31 enters the space between the outer ring 28 and the inner ring 29, the clamping tooth 32 is clamped with the clamping groove 33, to avoid relative movement between the wedge 31 and the inner wall of the outer ring 28.

[0152] As shown in Figure 22 As a further embodiment of the present embodiment, the outer wall of the inner ring 29 opposite to the wedge 31 is an inclined structure, which tends to fit the side surface of the wedge 31.

[0153] AsFigures 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;

[0154] The wedge block 31 is provided with snap-fit ​​texture 33;

[0155] 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] In actual engineering, most of the errors can be compensated by the device and method in embodiments 2-4, however, for some special error conditions, for example, due to production errors, individual fasteners 8 at a node are connected to deviate from other places, at this time, it is relatively inconvenient to individually re-measure the eccentricity at the individual place and select the corresponding eccentric circular ring pad plate 17, and for the individual place, the deviation can be corrected in the manner of the embodiment. In addition, for some deviations between different specifications of eccentric circular ring pad plates 17, the eccentric circular ring pad sleeve 27 disclosed in the embodiment can also be used to correct the deviation.

[0161] By adopting the technical scheme, the application has the following beneficial effects:

[0162] (1) The eccentric circular ring pad sleeve 27 adopts an adjustable structure, and through the combined design of the outer ring 28 and the inner ring 29, it can adapt to different sizes of the outer hole 15 and the inner hole 16, thereby enhancing the universality and adaptability of the pad sleeve and reducing installation problems caused by size mismatch.

[0163] (2) The inner ring 29 extends below the inner hole 16 for limiting, and the wedge block 31 is further wedged between the outer ring 28 and the inner ring 29, thereby enhancing the stability of the pad sleeve in the outer hole 15 and effectively preventing the pad sleeve from loosening or shifting during installation or use.

[0164] (3) The outer ring 28 and the inner ring 29 and the wedge block 31 are designed through the clamping of the clamping teeth 32 and the clamping grooves 33, thereby further improving the limiting effect, especially after the fastener 8 is installed, the clamping teeth 32 on the outer wall of the inner ring 29 can effectively clamp the wedge block 31, thereby avoiding loosening and ensuring the stability and safety of the entire structure.

[0165] (4) The clamping teeth 32 are designed in a ratchet structure, which not only reduces the resistance during the wedging of the wedge block 31, but also effectively prevents the loosening of the wedge block 31 after installation, thereby simplifying the installation operation and improving the work efficiency.

[0166] Embodiment 6

[0167] As shown in Figure 25 , the embodiment discloses a building system of a fabricated reinforcing node of a large-span I-shaped bar truss, which has the fabricated reinforcing node disclosed in the above embodiments, comprising a standard part 34 and a reinforcing node 35.

[0168] The adjacent standard parts 34 are connected through the reinforcing node 35.

[0169] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A prefabricated reinforcement node for a large-span I-beam truss, 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 pad is placed inside the outer hole; The outer ring of the eccentric annular pad fits into the wall of the outer hole; The inner ring of the eccentric annular pad coincides with the inner hole.

2. The prefabricated reinforcement node of the large-span I-beam truss according to claim 1, characterized in that, Limit blocks are provided on the first and second I-shaped 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 reinforcement node of the large-span I-beam truss according to 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 reinforcement node of the large-span I-beam truss 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 reinforcement node of the large-span I-shaped truss according to 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 reinforcement node of the large-span I-beam truss 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.

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