Fabricated aluminum alloy beam column sleeve connecting joint and construction method thereof

Abstract

The invention discloses an assembly type aluminum alloy beam column sleeve connection joint and a construction method thereof, and relates to the technical field of civil engineering structure earthquake resistance. The assembly type aluminum alloy beam column sleeve connection joint comprises a curled I-shaped section aluminum alloy beam column which is in bolted connection with the aluminum alloy beam column through a stainless steel sleeve, a beam flange is provided with a long circular bolt hole, and a fan-shaped slotted hole shear plate is matched; through cooperative energy consumption of sliding friction and rotating friction of the high-strength bolts, the main body structure is protected against plastic damage; and through steel bars and hoops are additionally arranged in the minor axis direction, a three-direction force transmission path of the flanges, the web plates and the steel bars is formed, and the flexural rigidity and the force transmission efficiency are improved. The two joints share the sleeve to achieve multidirectional rigidity cooperation, and construction is simplified through the step-by-step assembly technology. The aluminum alloy structure sleeve connecting joint has high bearing capacity, high earthquake resistance and convenience in assembly, is suitable for large-span and high-earthquake fortification-requirement fabricated buildings, and effectively solves the technical bottleneck of the aluminum alloy structure sleeve connecting joint.

Description

Technical Field

[0001] The present invention relates to the technical field of earthquake-resistant civil engineering structures, and in particular to an assembled aluminum alloy beam-column sleeve connection node and a construction method thereof. Background Art

[0002] In the field of seismic technology for civil engineering structures, aluminum alloy beam-column nodes are gradually replacing traditional steel structures due to their advantages such as light weight, high strength and corrosion resistance, but their connection technology still faces significant challenges. In the existing technology, sleeves are key connecting components. In traditional designs and applications, the traditional sleeve structure does not fully utilize its in-plane stiffness, resulting in insufficient overall bending stiffness of the node. When aluminum alloy beams and columns are bolted together, the synergy between the sleeves and the beams and columns is limited, making it difficult to effectively suppress the deformation of the node under large loads. In particular, low-cycle fatigue is prone to occur under dynamic loads, weakening the structural safety; the sleeves lack targeted force transmission structures in the weak axis direction. Traditional I-section sleeves mostly rely on flanges to transfer loads. Due to the lack of connection structure in the weak axis direction, the force transmission path is not smooth, which can easily lead to stress concentration and local buckling, exacerbating the extrusion deformation of the material around the bolt hole and affecting the bearing efficiency of the node.

[0003] In addition, the existing sleeve connection method has low assembly efficiency. Traditional sleeves mostly use welding or complex bolting processes, which have poor compatibility with aluminum alloy beams and columns, require high construction precision, and are difficult to achieve rapid assembly. Especially at high altitudes or in complex working conditions, installation errors can easily lead to loose connections, further reducing the stiffness of the node; and the energy dissipation mechanism of the sleeve is insufficient. Existing technologies mostly rely on the plastic deformation of materials to dissipate energy, but aluminum alloys have low elongation and are prone to brittle fracture. The contact surface between the sleeve and the beam lacks an effective friction design, and it is impossible to dissipate seismic energy through controllable sliding or rotation, resulting in poor node energy dissipation performance and difficulty in meeting seismic requirements.

[0004] Chinese patent publication number CN208701886U discloses a node connecting aluminum alloy beams and columns, including columns, sleeves, connectors, beams, U-shaped grooves, and diagonal braces, all made of aluminum alloy materials. The sleeves, L-shaped connectors, and U-shaped grooves achieve lightweighting and improved bending resistance. Although the above technical solution achieves lightweighting and improved bending resistance, it still has the following limitations: First, the node relies on a rigid connection and lacks a friction energy dissipation mechanism under dynamic loads, making it difficult to effectively dissipate seismic energy; second, the force transmission path is concentrated in a single direction, and the weak axis direction force transmission structure is missing, which can easily lead to local stress concentration and low-cycle fatigue failure; third, the connection structure is complex, the assembly efficiency is low, and problems such as weakened cross-sections and extrusion deformation of bolt holes are not solved. In addition, the node adopts a hollow rectangular cross-section, which reduces weight but has insufficient bending stability, making it difficult to meet the requirements of large-span or high-intensity earthquake resistance.

[0005] Therefore, there is an urgent need for an assembled node with a simple structure, efficient force transmission, and friction energy dissipation characteristics to solve the problems of insufficient seismic performance, poor installation convenience, and weak axis force transmission defects in the existing technology. Summary of the Invention

[0006] Based on the technical problems raised above, the present invention provides an assembled aluminum alloy beam-column sleeve connection node and a construction method thereof, which solves the problems of low stiffness, passive energy consumption and insufficient weak-axis force transmission of traditional nodes by enhancing bending stability through rolled edge cross-section, replacing welding with sleeve bolting, actively absorbing seismic energy through slot friction energy dissipation, and optimizing weak-axis force transmission through through-core steel rods, and has both efficient assembly and seismic resistance.

[0007] To achieve the above purpose, the technical means adopted by the present invention are as follows:

[0008] An assembled aluminum alloy beam-column sleeve connection node, comprising:

[0009] The aluminum alloy column with curled I-section has a positioning hole in the center of its web;

[0010] Two sets of aluminum alloy beams with curled I-sections connected to the aluminum alloy columns, comprising a first node and a second node, and connected to the aluminum alloy columns through the first aluminum alloy beam and the second aluminum alloy beam respectively;

[0011] The first node comprises: a stainless steel sleeve, a first stainless steel trapezoidal cover plate, a first stainless steel shear plate with a fan-shaped bolt hole, and a first stainless steel high-strength bolt, wherein the stainless steel sleeve is sleeved on the aluminum alloy column and fixed by the first stainless steel high-strength bolt, the first stainless steel trapezoidal cover plate is welded to the stainless steel sleeve, the first stainless steel shear plate is fixed to the beam web by the first stainless steel high-strength bolt, and an oblong bolt hole is provided on the beam flange, and the first stainless steel high-strength bolt slides in the hole to dissipate friction energy;

[0012] The second node comprises: a stainless steel sleeve, a second stainless steel trapezoidal cover plate, a second stainless steel shear plate, a second stainless steel high-strength bolt, a through-core steel rod and a ferrule. Both ends of the through-core steel rod are welded to the stainless steel sleeve through the ferrule and pass through the positioning hole of the aluminum alloy column web to form three force transmission paths;

[0013] The stainless steel sleeve is bolted to the rolled edge of the beam to improve the bending stiffness in the XZ plane and the YZ plane.

[0014] Furthermore, a circular bolt hole is provided at the center of the first stainless steel shear plate, and fan-shaped bolt holes are provided on the upper and lower sides. When the beam and column rotate relative to each other, the first stainless steel high-strength bolts slide and frictionally dissipate energy in the fan-shaped holes.

[0015] Furthermore, both ends of the through-core steel rod are provided with threads, the length of which is equal to the distance from the web of the aluminum alloy column to the inner side of the stainless steel sleeve. The hoop is pre-screwed on the steel rod and adjusted in position by rotation.

[0016] Furthermore, the first stainless steel trapezoidal cover plate and the stainless steel sleeve are welded to form a continuous force transmission surface, the oblong hole of the beam flange and the circular hole of the cover plate are staggered, and the first stainless steel high-strength bolt applies a pre-tightening force to provide initial stiffness.

[0017] Furthermore, two through-steel rods are provided in the center of the stainless steel sleeve of the second node, and form a symmetrical force transmission structure with the hoops on both sides of the aluminum alloy column web, thereby enhancing the bending resistance in the weak axis direction.

[0018] Furthermore, the first node and the second node share a stainless steel sleeve, and through the differentiated design of the through-core steel rod and the ferrule, a coordinated improvement in multi-directional stiffness is achieved.

[0019] Furthermore, the force transmission path between the first node and the second node includes:

[0020] The first node transmits load through three paths: the aluminum alloy column flange, the web, and the stainless steel sleeve;

[0021] The second node transmits load through three paths: aluminum alloy column flange, through-core steel rod and stainless steel sleeve.

[0022] Furthermore, the surfaces of the stainless steel sleeve, the first stainless steel trapezoidal cover plate, the second stainless steel trapezoidal cover plate, the first stainless steel shear plate, and the second stainless steel shear plate are coated with a zinc-aluminum coating anti-corrosion layer, and all welded joints adopt a continuous full welding process.

[0023] The present invention also provides a method for constructing an assembled aluminum alloy beam-column sleeve connection node, and the installation of the assembled aluminum alloy beam-column sleeve connection node comprises the following steps:

[0024] S1: Assemble the first node

[0025] S11. Sleeve the stainless steel sleeve onto the aluminum alloy column and fix it with a first stainless steel high-strength bolt;

[0026] S12. Weld and secure the first stainless steel trapezoidal cover plate located below to the stainless steel sleeve. After securing, place the first aluminum alloy beam with an I-shaped cross section and oblong bolt holes in place, aligning the center of the oblong bolt holes with the circular bolt holes of the first stainless steel trapezoidal cover plate below, and secure them using first stainless steel high-strength bolts.

[0027] S13, positioning the first stainless steel shear plate and the stainless steel sleeve at the web of the first aluminum alloy beam, welding them together, and fixing the first stainless steel shear plate and the web of the first aluminum alloy beam with first stainless steel high-strength bolts;

[0028] S14. Install the upper first stainless steel trapezoidal cover plate, which is also welded to the stainless steel sleeve. After positioning, use first stainless steel high-strength bolts to fix the first aluminum alloy beam with long slots and the first stainless steel trapezoidal cover plate.

[0029] S2: Assemble the second node

[0030] S21, weld one end of the through-core steel rod to the inner wall of the stainless steel sleeve, and pre-screw the other end with a ferrule;

[0031] S22. Adjust the position of the hoop through the positioning hole of the aluminum alloy column web, weld the steel rod on the other side, and tighten the hoop;

[0032] S23. Weld and secure the second stainless steel trapezoidal cover plate located below to the stainless steel sleeve. After securing, place the second aluminum alloy beam with an I-shaped cross section and an oblong bolt hole in place, aligning the center of the oblong bolt hole with the circular bolt hole of the second stainless steel trapezoidal cover plate below, and secure with a second stainless steel high-strength bolt.

[0033] S24, positioning the second stainless steel shear plate and the stainless steel sleeve at the web of the second aluminum alloy beam, welding them together, and fixing the second stainless steel shear plate and the web of the second aluminum alloy beam with a second stainless steel high-strength bolt;

[0034] S25. Install the second upper stainless steel trapezoidal cover plate, which is also welded to the stainless steel sleeve. After positioning, use the second stainless steel high-strength bolts to fix the second aluminum alloy beam with long slotted holes and the second stainless steel trapezoidal cover plate.

[0035] Due to the adoption of the above technical solution, the present invention has the following advantages compared with the prior art:

[0036] 1. This invention provides a prefabricated aluminum alloy beam-column sleeve connection node. By fully bolting a stainless steel sleeve to the aluminum alloy beam and column, this node completely avoids the softening of the aluminum alloy's heat-affected zone caused by traditional welding processes, preventing deformation or cracking caused by residual welding stress. Furthermore, the combination of stainless steel and aluminum alloy significantly enhances the node's corrosion resistance, making it particularly suitable for prefabricated buildings in humid or highly corrosive environments, ensuring structural integrity and seismic reliability over long-term use.

[0037] 2. This invention provides an assembled aluminum alloy beam-column sleeve connection node. The aluminum alloy beam flange with oblong bolt holes and the fan-shaped bolt hole shear plate, located in the first node, dynamically adjust the bolt preload and continuously dissipate energy under earthquake conditions through the synergistic effect of sliding and rotational friction. This mechanism maintains the beam-column body in an elastic state, avoiding the risk of material fracture caused by traditional plastic hinge energy dissipation. Furthermore, sandblasting the contact surface and matching the hole design significantly improves the friction coefficient and displacement adaptability, ensuring efficient energy dissipation while maintaining the initial structural rigidity.

[0038] 3. The present invention provides an assembled aluminum alloy beam-column sleeve connection node. The through-steel rod and hoop structure added to the second node form a rigid force transmission path through an interference fit and a two-way threaded connection, directly compensating for the insufficient force transmission structure in the weak axis direction of I-section columns. This design allows the weak axis load to be transmitted synergistically through the through-steel rod and sleeve. Combined with the three-way force transmission system of the flange and web, it significantly improves the node's bending stiffness and load-bearing capacity. This design is particularly suitable for large spans or asymmetric load conditions, ensuring the overall stability and safety of the structure under dynamic loads.

[0039] Based on the above reasons, the present invention can be widely promoted in the field of earthquake-resistant technology of civil engineering structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0041] Figure 1 This is a structural schematic diagram of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the first node structure of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of a first stainless steel trapezoidal cover plate in a first node of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of a first stainless steel shear plate in a first node of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0045] Figure 5This is a schematic diagram of the position of an oblong bolt hole provided on the beam flange of the first node of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the shape of an oblong bolt hole provided on the beam flange of the first node of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of the second node structure of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0048] Figure 8 An aluminum alloy column web opening in the second node of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0049] Figure 9 This is a schematic diagram of a second stainless steel trapezoidal cover plate in a second node of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0050] Figure 10 This is a schematic diagram of a second stainless steel shear plate in a second node of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0051] Figure 11 This is a side view of the second node of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0052] Figure 12 This is an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention. Figure 11 Section view along section line A;

[0053] Figure 13 This is a schematic diagram of the shape of an oblong bolt hole provided on the beam flange of the second node of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0054] Figure 14 This is an assembly diagram of a first node construction method S11 of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0055] Figure 15 This is an assembly drawing of a first node construction method S12 of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0056] Figure 16 This is an assembly drawing of a first node construction method S13 of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0057] Figure 17 This is an assembly drawing of a first node construction method S14 of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0058] Figure 18 This is an assembly diagram of a second node construction method S21 of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0059] Figure 19 This is an assembly diagram of a second node construction method S22 of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0060] Figure 20 This is an assembly diagram of a second node construction method S23 of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0061] Figure 21 This is an assembly diagram of a second node construction method S24 of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0062] Figure 22 This is an assembly drawing of a second node construction method S25 of an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0063] Figure 23 Schematic diagram I of the friction energy dissipation mode of the first node and the second node in an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0064] Figure 24 Schematic diagram II of the friction energy dissipation mode of the first node and the second node in an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0065] Figure 25 A schematic diagram of the force transmission path of the first node in an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention;

[0066] Figure 26 Schematic diagram of the force transmission path of the second node in an assembled aluminum alloy beam-column sleeve connection node according to an embodiment of the present invention.

[0067] In the figure; 1. aluminum alloy column; 2. first node; 3. second node; 2-1. first aluminum alloy beam; 2-2. stainless steel sleeve; 2-3. first stainless steel trapezoidal cover plate; 2-4. first stainless steel shear plate; 2-5. first stainless steel high-strength bolt; 3-1. second aluminum alloy beam; 3-3. second stainless steel trapezoidal cover plate; 3-4. second stainless steel shear plate; 3-5. second stainless steel high-strength bolt; 3-6. through-steel rod; 3-7. ferrule. DETAILED DESCRIPTION

[0068] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0069] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0070] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0071] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0072] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0073] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0074] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0075] Example 1

[0076] like Figures 1 to 13 As shown, an assembled aluminum alloy beam-column sleeve connection node comprises: an aluminum alloy column 1 with a curled I-section, the center of which is provided with a positioning hole;

[0077] Two sets of aluminum alloy beams with curled I-sections connected to the aluminum alloy column 1, including a first node 2 and a second node 3, connected to the aluminum alloy column 1 through a first aluminum alloy beam 2-1 and a second aluminum alloy beam 3-1 respectively;

[0078] The first node 2 comprises: a stainless steel sleeve 2-2, a first stainless steel trapezoidal cover plate 2-3, a first stainless steel shear plate 2-4 with a fan-shaped bolt hole, and a first stainless steel high-strength bolt 2-5, wherein the stainless steel sleeve 2-2 is sleeved on the aluminum alloy column 1 and fixed by the first stainless steel high-strength bolt 2-5, the first stainless steel trapezoidal cover plate 2-3 is welded to the stainless steel sleeve 2-2, the first stainless steel shear plate 2-4 is fixed to the beam web by the first stainless steel high-strength bolt 2-5, and an oblong bolt hole is provided on the beam flange, and the first stainless steel high-strength bolt 25 slides in the hole to dissipate friction energy;

[0079] The second node 3 comprises: a stainless steel sleeve 2-2, a second stainless steel trapezoidal cover plate 3-3, a second stainless steel shear plate 3-4, a second stainless steel high-strength bolt 3-5, a through-core steel rod 3-6 and a hoop 3-7. Both ends of the through-core steel rod 3-6 are welded to the stainless steel sleeve 2-2 through the hoop 3-7 and pass through the positioning hole of the web of the aluminum alloy column 1 to form three force transmission paths;

[0080] The stainless steel sleeve 2-2 is bolted to the beam curling portion to increase the bending stiffness in the XZ plane and the YZ plane;

[0081] By bolting the stainless steel sleeve 2-2 to the aluminum alloy column 1, the strength reduction problem caused by aluminum alloy welding is avoided; the local stability and bending resistance of the beam are improved by utilizing the curled I-shaped section; the force transmission efficiency in the strong and weak axis directions is optimized by using the through-steel rods 3-6 and three force transmission paths, thereby enhancing the bending stiffness and seismic performance of the two nodes.

[0082] Specifically, the first node 2 is composed of an aluminum alloy column 1 with an I-shaped section extending from both flanges, a first aluminum alloy beam 2-1 with an I-shaped section extending from both flanges, a stainless steel sleeve 2-2, a first stainless steel trapezoidal cover plate 2-3, a first stainless steel shear plate 2-4 with fan-shaped bolt holes, and a first stainless steel high-strength bolt 2-5. The first aluminum alloy beam 2-1 with an I-shaped section has four oblong bolt holes near the first node 2, while the first trapezoidal stainless steel cover plate has circular bolt holes. When the beam and column are relatively deformed, the stainless steel high-strength bolts slide in the oblong bolt holes to dissipate friction energy. The first stainless steel shear plate 2-4 has a circular bolt hole at the center and fan-shaped bolt holes above and below the center. When the beam and column rotate relative to each other, the first stainless steel high-strength bolt 2-5 rotates in the fan-shaped bolt hole to dissipate friction energy. Both friction energy dissipation devices need to apply corresponding preloads to the first stainless steel high-strength bolts 2-5 in accordance with the specifications to provide additional initial stiffness of the structure. Its specific structural form is as follows: Figure 2 and Figure 3 As shown;

[0083] The second node 3 is mainly composed of a rolled I-section aluminum alloy column 1, a rolled I-section second aluminum alloy beam 3-1, a stainless steel sleeve 2-2, a second stainless steel trapezoidal cover plate 3-3, a second stainless steel shear plate 3-4, a second stainless steel high-strength bolt 3-5, a through steel rod 3-6 and a hoop 3-7. Its specific structure is different from that of the first node 2 in that two additional through steel rods 3-6 are added at the center position of the cross section of the stainless steel sleeve 2-2, and two additional circular holes are opened at the center position of the web of the rolled I-section aluminum alloy column 1 for positioning the hoop 3-7. The through steel rod 3-6 is set in the form of a thread, and the length is equal to the distance from the web of the rolled I-section aluminum alloy column 1 to the inner side of the stainless steel sleeve 2-2. In this way, one end of the through steel rod 3-6 with a thread can be directly tightened through the steel rod hoop 3-7, and the other end can be directly welded to the stainless steel sleeve 2-2. The structure of the through steel rod 3-6 and the hoop 3-7 is as shown in FIG. Figure 6 As shown, the specific structure of the second node 3 and the opening of the web of the aluminum alloy column 1 are as follows Figure 4 As shown, the first node 2 and the second node 3 share the stainless steel sleeve 2-2. Through the differentiated design of the through-core steel rod 3-6 and the ferrule 3-7, the synergistic improvement of the multi-directional bending stiffness is achieved, and the material redundancy and construction complexity are reduced.

[0084] Example 2

[0085] like Figures 14 to 22 As shown, a method for constructing an assembled aluminum alloy beam-column sleeve connection node includes the following steps:

[0086] S1: Assemble the first node 2;

[0087] S11, put the stainless steel sleeve 2-2 on the aluminum alloy column 1 and fix it with the first stainless steel high-strength bolt 2-5. Figure 14 As shown;

[0088] S12, weld and fix the first stainless steel trapezoidal cover plate 2-3 and the stainless steel sleeve 2-2. After fixing, place the first aluminum alloy beam 2-1 with an I-shaped cross section and an oblong bolt hole in place. Align the center of the oblong bolt hole with the circular bolt hole of the first stainless steel trapezoidal cover plate 2-3 below. Use the first stainless steel high-strength bolt 2-5 to connect and fix. Figure 15 As shown;

[0089] S13, after positioning the first stainless steel shear plate 2-4 and the stainless steel sleeve 2-2 at the web of the first aluminum alloy beam 2-1, weld them, and use the first stainless steel high-strength bolts 2-5 to fix the first stainless steel shear plate 2-4 and the web of the first aluminum alloy beam 2-1, as shown in FIG. Figure 16 As shown;

[0090] S14, install the upper first stainless steel trapezoidal cover plate 2-3, which is also welded to the stainless steel sleeve 2-2. After positioning, use the first stainless steel high-strength bolt 2-5 to fix the first aluminum alloy beam 2-1 with long slots and the first stainless steel trapezoidal cover plate 2-3. Figure 17 As shown;

[0091] S2: assemble the second node 3;

[0092] S21, weld one end of the through-core steel rod 3-6 to the inner wall of the stainless steel sleeve 2-2, and pre-tighten the other end of the steel rod 3-6 to the inner wall of the stainless steel sleeve 2-2. Figure 18 As shown;

[0093] S22, adjust the position of the hoop 3-7 through the positioning hole of the web of the aluminum alloy column 1, weld the steel rod on the other side and tighten the hoop 3-7, as shown in the following figure: Figure 19 As shown;

[0094] S23, weld the second stainless steel trapezoidal cover plate 3-3 located below to the stainless steel sleeve 2-2, and after fixing, place the second aluminum alloy beam 3-1 with an I-shaped cross section and an oblong bolt hole, aligning the center of the oblong bolt hole with the circular bolt hole of the second stainless steel trapezoidal cover plate 3-3 below, and use the second stainless steel high-strength bolt 3-5 to connect and fix it, as shown in FIG. Figure 20 As shown;

[0095] S24, after positioning the second stainless steel shear plate 3-4 and the stainless steel sleeve 2-2 at the web of the second aluminum alloy beam 3-1, weld them, and use the second stainless steel high-strength bolts 3-5 to fix the second stainless steel shear plate 3-4 and the web of the second aluminum alloy beam 3-1, as shown in FIG. Figure 21 As shown;

[0096] S25, install the upper second stainless steel trapezoidal cover plate 3-3, which is also welded to the stainless steel sleeve 2-2. After positioning, use the second stainless steel high-strength bolt 3-5 to fix the second aluminum alloy beam with long slot holes and the second stainless steel trapezoidal cover plate 3-3. Figure 22 shown.

[0097] like Figures 23 to 24 As shown, the working principles of Example 1 and Example 2 are as follows:

[0098] When a rolled I-section aluminum alloy beam-column joint is subjected to earthquake action, the beam and column 1 at the first node 2 rotate relative to each other. If the end of the rolled I-section aluminum alloy beam 2-1 experiences a downward displacement, the column 1 and beam 2-1 experience a relative rotation as shown in the figure. The upper flange of the beam moves rightward, causing the first high-strength stainless steel bolt 2-5 to slide within the slotted hole of the rolled I-section aluminum alloy beam 2-1. The lower flange moves leftward, causing the first high-strength stainless steel bolt 2-5 to slide within the slotted hole of the rolled I-section aluminum alloy beam 2-1. The rolled I-section aluminum alloy beam 2-1 rotates clockwise around the center first high-strength stainless steel bolt 2-5, dissipating frictional energy by rotating relative to the first stainless steel shear plate 2-4 with the circular slot. If the beam end experiences an upward displacement, all relative rotations reverse in direction. Friction energy dissipation methods such as Figure 14 and Figure 15 At this time, due to the setting of the first stainless steel trapezoidal cover plate 2-3, the force of the first aluminum alloy beam 2-1 and the plate structure is mainly transmitted to the curled I-section aluminum alloy column 1, and the force is transmitted through three paths through its two flanges and web, as shown in FIG. Figure 25 shown.

[0099] When the rolled I-section aluminum alloy beam-column node is subjected to earthquake action, the friction energy dissipation mode of the second node 3 is the same as that of the first node 2. However, the force transmission mode is different. Due to the setting of the first stainless steel trapezoidal cover plate 2-3, the force of the first aluminum alloy beam 2-1 and the plate structure is mainly transmitted to the rolled I-section aluminum alloy column 1. Since the second node 3 is set on one side of the rolled I-section and is in a cavity state, a through steel rod 3-6 and a hoop 3-7 are set to provide a force transmission path, and the weak side of the rolled I-section is strengthened. At this time, the force is transmitted through three force transmission paths: the two flanges of the aluminum alloy column 1 and the through steel rod 3-6. Figure 26 shown.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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. An assembled aluminum alloy beam-column sleeve connection node, characterized in that: include: The aluminum alloy column with curled I-section has a positioning hole in the center of its web; Two sets of aluminum alloy beams with curled I-sections connected to the aluminum alloy columns, comprising a first node and a second node, and connected to the aluminum alloy columns through the first aluminum alloy beam and the second aluminum alloy beam respectively; The first node comprises: a stainless steel sleeve, a first stainless steel trapezoidal cover plate, a first stainless steel shear plate with a fan-shaped bolt hole, and a first stainless steel high-strength bolt, wherein the stainless steel sleeve is sleeved on the aluminum alloy column and fixed by the first stainless steel high-strength bolt, the first stainless steel trapezoidal cover plate is welded to the stainless steel sleeve, the first stainless steel shear plate is fixed to the beam web by the first stainless steel high-strength bolt, and an oblong bolt hole is provided on the beam flange, and the first stainless steel high-strength bolt slides in the hole to dissipate friction energy; The second node comprises: a stainless steel sleeve, a second stainless steel trapezoidal cover plate, a second stainless steel shear plate, a second stainless steel high-strength bolt, a through-core steel rod and a ferrule. Both ends of the through-core steel rod are welded to the stainless steel sleeve through the ferrule and pass through the positioning hole of the aluminum alloy column web to form three force transmission paths; The stainless steel sleeve is bolted to the rolled edge of the beam to improve the bending stiffness in the XZ plane and the YZ plane.

2. The assembled aluminum alloy beam-column sleeve connection node according to claim 1, characterized in that: A circular bolt hole is provided at the center of the first stainless steel shear plate, and fan-shaped bolt holes are provided on the upper and lower sides. When the beam and column rotate relative to each other, the first stainless steel high-strength bolts slide and frictionally dissipate energy in the fan-shaped holes.

3. The assembled aluminum alloy beam-column sleeve connection node according to claim 1, characterized in that: The two ends of the through-core steel rod are provided with threads, the length of which is equal to the distance from the web of the aluminum alloy column to the inner side of the stainless steel sleeve. The hoop is pre-screwed on the steel rod and adjusted in position by rotation.

4. The assembled aluminum alloy beam-column sleeve connection node according to claim 1, characterized in that: The first stainless steel trapezoidal cover plate and the stainless steel sleeve are welded to form a continuous force transmission surface. The oblong hole of the beam flange and the circular hole of the cover plate are staggered. The first stainless steel high-strength bolt applies a pre-tightening force to provide initial stiffness.

5. The assembled aluminum alloy beam-column sleeve connection node according to claim 1, characterized in that: Two through-steel rods are provided in the center of the stainless steel sleeve of the second node, and form a symmetrical force transmission structure with the hoops on both sides of the aluminum alloy column web to enhance the bending resistance in the weak axis direction.

6. The assembled aluminum alloy beam-column sleeve connection node according to claim 1, characterized in that: The first node and the second node share a stainless steel sleeve, and through the differentiated design of the through-core steel rod and the ferrule, a coordinated improvement in multi-directional stiffness is achieved.

7. The assembled aluminum alloy beam-column sleeve connection node according to claim 1, characterized in that: The force transmission path between the first node and the second node includes: The first node transmits load through three paths: the aluminum alloy column flange, the web, and the stainless steel sleeve; The second node transmits load through three paths: aluminum alloy column flange, through-core steel rod and stainless steel sleeve.

8. The sleeve connection node according to any one of claims 1 to 7, characterized in that: The surfaces of the stainless steel sleeve, the first stainless steel trapezoidal cover plate, the second stainless steel trapezoidal cover plate, the first stainless steel shear plate and the second stainless steel shear plate are coated with a zinc-aluminum coating anti-corrosion layer, and all welded joints adopt a continuous full welding process.

9. A method for constructing an assembled aluminum alloy beam-column sleeve connection node, characterized in that: The installation of the assembled aluminum alloy beam-column sleeve connection node according to claim 1 comprises the following steps: S1: Assemble the first node S11. Sleeve the stainless steel sleeve onto the aluminum alloy column and fix it with a first stainless steel high-strength bolt; S12. Weld and secure the first stainless steel trapezoidal cover plate located below to the stainless steel sleeve. After securing, place the first aluminum alloy beam with an I-shaped cross section and oblong bolt holes in place, aligning the center of the oblong bolt holes with the circular bolt holes of the first stainless steel trapezoidal cover plate below, and secure them using first stainless steel high-strength bolts. S13, positioning the first stainless steel shear plate and the stainless steel sleeve at the web of the first aluminum alloy beam, welding them together, and fixing the first stainless steel shear plate and the web of the first aluminum alloy beam with first stainless steel high-strength bolts; S14. Install the upper first stainless steel trapezoidal cover plate, which is also welded to the stainless steel sleeve. After positioning, use first stainless steel high-strength bolts to fix the first aluminum alloy beam with long slots and the first stainless steel trapezoidal cover plate. S2: assemble the second node; S21, weld one end of the through-core steel rod to the inner wall of the stainless steel sleeve, and pre-screw the other end with a ferrule; S22. Adjust the position of the hoop through the positioning hole of the aluminum alloy column web, weld the steel rod on the other side, and tighten the hoop; S23. Weld and secure the second stainless steel trapezoidal cover plate located below to the stainless steel sleeve. After securing, place the second aluminum alloy beam with an I-shaped cross section and an oblong bolt hole in place, aligning the center of the oblong bolt hole with the circular bolt hole of the second stainless steel trapezoidal cover plate below, and secure with a second stainless steel high-strength bolt. S24, positioning the second stainless steel shear plate and the stainless steel sleeve at the web of the second aluminum alloy beam, welding them together, and fixing the second stainless steel shear plate and the web of the second aluminum alloy beam with a second stainless steel high-strength bolt; S25. Install the second upper stainless steel trapezoidal cover plate, which is also welded to the stainless steel sleeve. After positioning, use the second stainless steel high-strength bolts to fix the second aluminum alloy beam with long slots and the second stainless steel trapezoidal cover plate.

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