A self-centering lateral force resisting module suitable for a beam-penetration frame

Abstract

The application belongs to a self-resetting lateral force resisting module suitable for a beam-penetrating frame in the technical field of structural engineering. The technical scheme is as follows: the rotating support is a obtuse triangle frame composed of an inclined support and a horizontal beam, the obtuse angle top of the obtuse triangle frame is hingedly connected with the bottom of the upper main beam of the beam-penetrating frame, and the center of the horizontal beam of the obtuse triangle frame is connected with a thorn ring-dish spring reset system; the acute angle of the obtuse triangle frame is connected with an inner and outer wedge-shaped plate-dish spring reset system; a viscoelastic damping groove is connected below the horizontal beam and is located between the thorn ring-dish spring reset system and the inner and outer wedge-shaped plate-dish spring reset system; the bottom of the thorn ring-dish spring reset system, the viscoelastic damping groove and the inner and outer wedge-shaped plate-dish spring reset system are respectively fixedly connected with the upper part of the lower main beam of the beam-penetrating frame. It fully matches the characteristics of the beam-penetrating steel frame, and solves the weak layer effect of the beam-penetrating steel frame in the application of high-rise building structure in the background technology.

Description

Technical Field

[0001] This invention belongs to the field of structural engineering technology, specifically relating to a self-resetting lateral force resisting structure applied to a beam-through frame. Background Technology

[0002] In recent years, with the acceleration of industrialization in the construction industry, modular steel structure building systems have gained widespread attention and application due to their significant advantages such as fast construction speed, easy quality control, and environmental friendliness. As an important modular structural form, the continuous beam frame features main beams that run continuously at the joints, with column members connected in segments to the main beams. This structural form is particularly suitable for layered prefabricated construction methods, where structural components for each floor can be prefabricated in the factory and quickly hoisted and connected on-site like "building blocks."

[0003] Beams are the main span structural members, typically ranging from 15 to 30 meters. Beams have a large cross-sectional height, while columns have smaller cross-sections and only bear vertical loads. Due to their unique "vertical load-bearing, horizontal lateral resistance" force transmission mechanism, with functional separation, continuous beam frames are mainly used in low- and mid-rise building structures. This is because such structures are prone to significant "weak story effects" in high-rise buildings. Current methods for improving structural seismic performance and addressing post-earthquake residual deformation often involve adding self-centering central supports, self-centering eccentric supports, or self-centering shear walls within the frame to resist lateral forces. Layered, assembled continuous beam frames differ from traditional bending-resistant steel frames.

[0004] Therefore, it is necessary to propose a lateral force resisting module that perfectly fits the modular, beam-through frame to solve or improve the existing defects and help promote and use the beam-through frame in high-rise building structures. Summary of the Invention

[0005] This invention provides a self-resetting lateral force resisting module suitable for beam-through steel frames. Its purpose is to solve the "weak layer effect" that exists in the application of beam-through steel frames in high-rise building structures in the background art, while fully matching the characteristics of beam-through steel frames.

[0006] To achieve this technical objective, the technical solution adopted by this invention is as follows:

[0007] A self-resetting lateral force resisting module suitable for beam-through frames includes a rotating brace, a thorn ring-disc spring reset system, two sets of viscoelastic damping grooves, and two sets of inner and outer wedge plate-disc spring reset systems. The rotating brace is an obtuse-angled triangular frame composed of diagonal braces and horizontal beams. The obtuse angle apex of the obtuse-angled triangular frame is hinged to the bottom of the upper main beam of the beam-through frame. The center of the horizontal beam of the obtuse-angled triangular frame is connected to the thorn ring-disc spring reset system. The acute angle of the obtuse-angled triangular frame is connected to the inner and outer wedge plate-disc spring reset systems. The viscoelastic damping grooves are connected below the horizontal beams and located between the thorn ring-disc spring reset system and the inner and outer wedge plate-disc spring reset systems. The bottoms of the thorn ring-disc spring reset system, the viscoelastic damping grooves, and the inner and outer wedge plate-disc spring reset systems are fixedly connected to the upper part of the lower main beam of the beam-through frame.

[0008] Based on the above technical features, the thorn ring-disc spring reset system includes an inner thorn ring, an outer thorn ring, a first disc spring assembly, a pin, a first nut end plate, and a pin nut; the upper side of the inner thorn ring is fixed to the horizontal beam; two outer thorn rings clamp the inner thorn ring, and the outer sides of the two outer thorn rings are respectively provided with the first disc spring assembly, the outer side of the first disc spring assembly is the first nut end plate, the pin passes through the first nut end plate, the first disc spring assembly, the outer thorn ring and the inner thorn ring, and is fixed with a pin nut, the rotation direction of the pin is perpendicular to the plane of the rotating support.

[0009] Based on the above technical features, the inner and outer thorn rings are made of high-strength wear-resistant steel, and the thorn curvature angle of both is less than [value missing]. The value, It is the coefficient of friction between high-strength wear-resistant steels.

[0010] Based on the above technical features, a first elongated hole is provided on the connection end plate between the bottom of the outer ring of the thorn and the lower main beam. The length of the first elongated hole should be greater than the deformation requirement outside the plane of the rotating support caused by the expansion effect.

[0011] Based on the above technical features, the viscoelastic damping groove includes an inner shear steel plate, a viscoelastic material layer, an outer constraint steel plate, and fixing bolts; the upper side of the inner shear steel plate is fixedly connected to the horizontal beam along the beam length direction, and the outer constraint steel plate clamps the inner shear steel plate; the viscoelastic material layer is between the outer constraint steel plate and the inner shear steel plate; the fixing bolts pass through and fix the inner shear steel plate, the viscoelastic material layer, and the outer constraint steel plate.

[0012] Based on the above technical features, the perforation of the internal shear steel plate is a vertical second oblong hole. The width of the second oblong hole should be slightly larger than the diameter of the fixing bolt, and the length should be larger than the deformation range of the viscoelastic damping groove.

[0013] Based on the above technical features, the viscoelastic damping groove is arranged away from the thorn ring-disc spring reset system.

[0014] Based on the above technical features, the inner and outer wedge plate-disc spring reset system includes an inner wedge plate, inner wedge plate stiffening ribs, an outer wedge plate, a second disc spring assembly, a second nut end plate, a fastening nut, and a high-strength lead screw; two inner wedge plates are arranged on the front and rear sides of the horizontal beam, and the two inner wedge plates clamp the web of the horizontal beam through the inner wedge plate stiffening ribs. The inner wedge plate stiffening ribs are fixed perpendicularly to the inner wedge plates, and the web of the horizontal beam can be inserted into the inner wedge plate stiffening ribs on both sides; the outer sides of the two inner wedge plates are respectively the outer wedge plate and the inner wedge plate and the outer wedge plate. The contact surface of the outer wedge plate is wedge-shaped; a second disc spring assembly is respectively set on the outer side of the two outer wedge plates, and the outer side of the second disc spring assembly is the second nut end plate; the high-strength screw rod passes through the second nut end plate, the second disc spring assembly, the outer wedge plate, the inner wedge plate, and the web of the horizontal beam, and is connected and fixed with a fastening nut; the length direction of the high-strength screw rod is perpendicular to the plane of the rotating support; the outer wedge plate is vertically connected and fixed to the lower main beam of the beam-through frame; the height of the web of the horizontal beam is the same as the height of the inner wedge plate and the stiffening rib of the inner wedge plate.

[0015] Based on the above technical features, an outer wedge plate stiffening rib is provided on the outer side of the outer wedge plate, and the outer wedge plate stiffening rib is fixed perpendicularly to the outer wedge plate; the bottom of the outer wedge plate stiffening rib is connected and fixed to the lower main beam of the beam-through frame.

[0016] Based on the above technical features, a third elongated hole is opened on the inner wedge plate, and a web elongated hole is opened on the web of the horizontal beam; the width of the third elongated hole and the web elongated hole is greater than the diameter of the high-strength screw, and the length of the third elongated hole and the web elongated hole should be greater than the deformation range of the inner and outer wedge plate-disc spring reset system.

[0017] Based on the above technical features, a fourth elongated hole is provided on the bottom of the outer wedge plate and the connecting end plate of the lower main beam. The length of the fourth elongated hole should be greater than the deformation requirement outside the plane of the rotating support caused by the expansion effect.

[0018] Based on the above technical characteristics, the horizontal beam is an I-beam or a welded H-beam.

[0019] The self-resetting lateral force resisting module suitable for beam-through frames utilizes the lever principle of rotating braces to amplify the displacement of the viscoelastic damping groove as an energy dissipation system, significantly increasing the module's energy dissipation capacity and reducing the seismic response (such as inter-story displacement, floor acceleration, etc.) and structural damage of the main structure.

[0020] The thorn ring-disc spring reset system cleverly increases the structural reset force by utilizing the expansion effect of rotation between the inner and outer thorn rings.

[0021] The outer wedge plate-disc spring reset system cleverly increases the structural reset force by utilizing the expansion effect brought about by the inclined sliding of the inner and outer wedge plates. At the same time, by utilizing the inclined sliding of the inner and outer wedge plates, the system achieves the characteristics of variable stiffness and increased energy consumption. Furthermore, the inclined sliding structure of the inner and outer wedge plates scales down the influence of the rotation support on displacement amplification due to the lever principle, thereby reducing the prestress deformation requirements of the reset system. Attached Figure Description

[0022] Figure 1 This is a front view of the connection of the present invention on a beam-through frame.

[0023] Figure 2 This is a three-dimensional isometric view of the beam-through frame connection of the present invention.

[0024] Figure 3 A schematic diagram of a suitable through-beam frame.

[0025] Figure 4 This is a schematic diagram of the rotating support of the present invention.

[0026] Figure 5 This is a schematic diagram of the thorn ring-disc spring reset system of the present invention.

[0027] Figure 6 This is a schematic diagram of the viscoelastic damping groove of the present invention.

[0028] Figure 7 This is an exploded view of the viscoelastic damping groove of the present invention.

[0029] Figure 8 This is a schematic diagram of the inner and outer wedge plate-disc spring reset system of the present invention.

[0030] Figure 9 This is a disassembly diagram of the inner and outer wedge plate-disc spring reset system of the present invention.

[0031] Figure 10 This is a schematic diagram of the self-resetting lateral force resisting module before overall deformation.

[0032] Figure 11 This is a schematic diagram of the self-resetting lateral force resisting module after overall deformation.

[0033] Figure 12 This is a schematic diagram of the thorn ring-disc spring reset system before deformation.

[0034] Figure 13 This is a schematic diagram of the thorn ring-disc spring reset system after deformation.

[0035] Figure 14 This is a schematic diagram of the viscoelastic damping groove before deformation.

[0036] Figure 15 This is a schematic diagram of the viscoelastic damping groove after deformation.

[0037] Figure 16 This is a schematic diagram of the inner and outer wedge plate-disc spring reset system before deformation.

[0038] Figure 17 This is a schematic diagram of the inner and outer wedge plate-disc spring reset system after deformation.

[0039] Figure 18 This is a schematic diagram of the weak layer effect in existing technology.

[0040] Figure 19 This is a simplified diagram of the stress and deformation of a self-resetting energy-dissipating support in the prior art.

[0041] Figure 20 This is a simplified diagram comparing the deformation of the self-resetting lateral force resisting module of the present invention before and after being subjected to force.

[0042] Figure 21 This is a displacement transformation diagram of the inner and outer wedge plates in this invention.

[0043] Figure 22 This is a schematic diagram of the load-displacement curve of a single-stage self-resetting energy-dissipating support in the prior art.

[0044] Figure 23 This is a schematic diagram of the load-displacement curve of the present invention.

[0045] Figure 24 This is a schematic diagram of the curved surface of the thorns.

[0046] Component markings:

[0047] 5—Continuous beam frame, 5a—Main beam, 5b—Column;

[0048] 1—Rotating brace, 1a—Vertical section, 1b—Diagonal brace, 1c—Horizontal beam, 1d—Inner ring of thorns, 1d-1—Inner thorn curved surface

[0049] 2—Thorn ring-disc spring reset system, 2a—Thorn outer ring, 2a-1—Outer thorn curved surface, 2b—First disc spring group, 2c—First nut end plate, 2d—Pin nut, 2e—Pin; 2f—First oblong hole;

[0050] 3—Viscoelastic damping groove; 3a—Inner shear steel plate; 3b—Viscoelastic material layer; 3c—Outer constraint steel plate; 3d—Fixing bolt; 3e—Second elongated hole;

[0051] 4—Inner and outer wedge plate-disc spring reset system; 4a—Inner wedge plate; 4b—Inner wedge plate stiffening rib; 4c—Outer wedge plate; 4d—Outer wedge plate stiffening rib; 4e—Second disc spring assembly; 4f—Second nut end plate; 4g—Fastening nut; 4h—High-strength lead screw; 4i—Third elongated hole; 4j—Fourth elongated hole. Detailed Implementation

[0052] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0053] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "XYZ axis," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] like Figure 1 , Figure 2 , Figure 3 As shown, the through-beam frame 5 includes main beams 5a and columns 5b. Because the through-beam frame 5 is a load-bearing structure with separate vertical load-bearing and horizontal lateral resistance functions, the main beams 5a and columns 5b are connected non-rigidly. Figure 3 Specifically, the main beam 5a of the beam-through frame 5 is connected to the column 5b by a single bolt end plate, which is approximately a hinged or semi-rigid connection. The column 5b is a vertical load-bearing member. The beam-column joint does not provide horizontal lateral resistance. The lateral resistance is entirely provided by the self-resetting lateral force resisting module.

[0055] The self-resetting lateral force resisting module provided by this invention is suitable for a beam-through frame 5 and is arranged between the upper and lower main beams 5a of the beam-through frame 5. The self-resetting lateral force resisting module includes a rotating brace 1, a thorn ring-disc spring reset system 2, two sets of viscoelastic damping grooves 3, and two sets of inner and outer wedge plate-disc spring reset systems 4.

[0056] Rotary brace 1 is an obtuse-angled triangular frame composed of diagonal brace 1b and horizontal beam 1c. The upper end of diagonal brace 1b can be connected via vertical segment 1a (e.g., Figure 4 (As shown).

[0057] The obtuse-angled triangular frame has its obtuse-angled apex hinged to the bottom of the upper main beam of the beam-through frame 5. The hinged connection method is a mature existing technology.

[0058] The center of the horizontal beam 1c of the obtuse-angled triangular frame is connected to the thorn ring-disc spring reset system 2, forming the rotation fulcrum of the rotating support 1.

[0059] The obtuse-angled triangular frame connects the inner and outer wedge-shaped plates to the disc spring reset system 4 at the acute angle. Figure 1 and Figure 2As shown, the two sets of inner and outer wedge plate-disc spring reset systems 4 are symmetrically arranged at both ends of the rotating support 1, located near the node region of the diagonal support 1b and the horizontal beam 1c, so as to ignore the reduction of the overall module stiffness caused by the additional bending moment and shear force generated between the inner and outer wedge plate-disc spring reset systems 4 and the rotating support 1.

[0060] The viscoelastic damping groove 3 is connected below the horizontal beam 1c and is located between the thorn ring-disc spring reset system 2 and the inner and outer wedge plate-disc spring reset system 4. For example... Figure 1 In the XZ plane shown, two sets of viscoelastic damping grooves 3 are symmetrically arranged on both sides of the lower part of the rotating support 1.

[0061] The bottoms of the thorn ring-disc spring reset system 2, the viscoelastic damping groove 3, and the inner and outer wedge plates-disc spring reset system 4 are fixedly connected to the upper part of the lower main beam of the beam-through frame 5, respectively.

[0062] In the above, under the reciprocating seismic action in the horizontal direction, the rotating support 1 will be transformed from the thorn ring-disc spring reset system 2 into rotation around the fulcrum, realizing the reciprocating vertical displacement of the viscoelastic damping groove 3 and the inner and outer wedge plates-disc spring reset system 4.

[0063] Each viscoelastic damping groove 3 is a velocity-type damper, which does not generate excessive restraint force when the structure undergoes slow deformation. This makes it less effective in reducing the seismic response of the structure while having less impact on its daily use and temperature deformation. The distance between the grooves and the damping grooves can be adjusted on the horizontal beam 1c according to the building's usage requirements and damping specifications. Generally, they should be placed in an area far from the rotation center, i.e., away from the thorn ring-disc spring reset system 2.

[0064] The following section, in conjunction with the diagram, provides a detailed description of each component of the self-resetting lateral force resisting module.

[0065] like Figure 4 As shown: The rotating support 1 consists of one vertical section 1a, two diagonal braces 1b, and one horizontal beam 1c. The inner ring 1d of the thorns can be pre-welded to the horizontal beam 1c of the rotating support 1.

[0066] like Figure 4 and Figure 5 As shown: The thorn ring-disc spring reset system 2 includes a thorn inner ring 1d (see...) Figure 4 ), Thorn outer ring 2a, first disc spring group 2b, pin 2e, first nut end plate 2c, pin nut 2d.

[0067] The upper side of the inner ring 1d of the thorns is fixed to the horizontal beam 1c (e.g.) Figure 4(As shown); two outer thorn rings 2a clamp the inner thorn ring 1d. The outer sides of the two outer thorn rings 2a are respectively provided with a first disc spring group 2b. The outer side of the first disc spring group 2b is a first nut end plate 2c. The pin 2e passes through the first nut end plate 2c, the first disc spring group 2b, the outer thorn ring 2a and the inner thorn ring 1d, and is fixed by the pin nut 2d. The rotation direction of the pin 2e is perpendicular to the plane where the rotating support 1 is located, that is, the pin 2e rotates around the Y-axis, and the rotating support 1 rotates in the XZ plane with the pin 2e as the fulcrum.

[0068] The inner thorn ring 1d and the outer thorn ring 2a are made of high-strength wear-resistant steel. The thorn surface angle of both should not be too large. To prevent the self-locking effect, the thorn surface angle is generally less than [value missing]. The value, The coefficient of friction between the wear-resistant steels; the relative rotation of the inner ring 1d and the outer ring 2a of the thorns causes the outer ring 2a of the thorns to expand in the Y-axis direction, which will further compress the first disc spring assembly 2b, thereby providing prestress for the reset of the rotating support 1.

[0069] The thorny surface is a wavy or spiral mechanically interlocking structure. It is not a smooth plane, but rather designed with a series of continuous, regularly occurring convex and concave surfaces, resembling wave crests and troughs. The inner thorny ring 1d and the outer thorny ring 2a are two mechanical components that require close fitting. The thorny surface angle is the angle between each wavy or spiral bearing surface on the surface and the base plane. Figure 24 The dashed elliptical surface in the figure is the base plane, which is a reference plane perpendicular to the direction of the pin axis 2e and located between the crest and trough.

[0070] like Figure 24 As shown, the inner thorn surface 1d-1 on the inner thorn ring 1d is formed by rotating three peaks and three troughs, each pair with a 60-degree angle, around the center of the inner thorn surface 1d-1. The angle between the peaks and the base plane is... The angle between the trough and the base plane is also... That is: the angle of the thorny surface is The outer ring 2a of the thorns is constructed in the same way. The difference is that the peaks and troughs of the outer thorn surface 2a-1 on the outer ring 2a are offset from the peaks and troughs of the inner thorn surface 1d-1 on the inner ring 1d of the thorns, so that the inner ring 1d of the thorns and the outer ring 2a of the thorns can form an initial fit. Figure 24 The thorny surface shown is merely an example for ease of understanding.

[0071] Figure 5 The bottom end plate of the outer ring 2a of the middle thorn, Figure 6 The bottom end plate of the 3C steel plate with internal and external constraints and Figure 8The bottom end plate of the outer wedge plate 4c is connected to the horizontal beam 1c by bolts. It is worth noting that the bottom end plate of the outer thorn ring 2a and the bottom end plate of the outer wedge plate 4c should be provided with elongated holes, namely the first elongated hole 2f and the fourth elongated hole 4j, to meet the out-of-plane (Y direction in the figure) deformation requirements caused by the expansion effect.

[0072] like Figure 6 and Figure 7 As shown, the viscoelastic damping groove 3 specifically comprises two outer constraint steel plates 3c, a viscoelastic material layer 3b, one inner shear steel plate 3a, and fixing bolts 3d. The viscoelastic material layer 3b can be a vulcanized rubber layer.

[0073] The viscoelastic material layer 3b should preferably be made of a durable, anti-aging damping material; the width of the second elongated hole 3e on the inner shear steel plate 3a should be slightly larger than the diameter of the fixing bolt 3d to prevent the bolt from colliding in the groove of the second elongated hole 3e during rotation. The length of the second elongated hole 3e should meet the deformation requirements of the viscoelastic damping groove 3; the fixing bolt 3d does not need to be pre-tightened, but it should be used to tighten the outer constraint steel plate 3c, the viscoelastic material layer 3b, and the inner shear steel plate 3a.

[0074] like Figure 8 , Figure 9 As shown, the inner and outer wedge plate-disc spring reset system 4 includes two sets of inner wedge plates 4a, outer wedge plates 4c, two sets of second disc springs 4e, a second nut end plate 4f, a fastening nut 4g, and a high-strength lead screw 4h.

[0075] Two inner wedge plates 4a are arranged on the front and rear sides of the horizontal beam 1c. The two inner wedge plates 4a are clamped to the web of the horizontal beam 1c by inner wedge plate stiffening ribs 4b. The inner wedge plate stiffening ribs 4b are fixed perpendicularly to the inner wedge plates 4a. The web of the horizontal beam 1c can be inserted between the inner wedge plate stiffening ribs 4b on both sides. The outer sides of the two inner wedge plates 4a are respectively outer wedge plates 4c, and the contact surfaces of the inner wedge plates 4a and outer wedge plates 4c are wedge-shaped. The outer sides of the two outer wedge plates 4c are respectively provided with the first... The outer side of the second disc spring assembly 4e is the second nut end plate 4f; the high-strength screw 4h passes through the second nut end plate 4f, the second disc spring assembly 4e, the outer wedge plate 4c, the inner wedge plate 4a, and the web of the horizontal beam 1c, and is connected and fixed with the fastening nut 4g; the length direction of the high-strength screw 4h is perpendicular to the plane direction of the rotating support 1, that is, the length direction of the high-strength screw 4h is the Y-axis in the figure; the outer wedge plate 4c is perpendicularly connected and fixed to the upper part of the lower main beam of the beam-through frame 5.

[0076] The inner wedge plate stiffening rib 4b and the outer wedge plate stiffening rib 4d are provided to ensure the overall rigidity of the inner wedge plate 4a and the outer wedge plate 4c. The horizontal beam 1c should preferably be an I-beam or welded H-beam. The height of the web of the horizontal beam 1c is the same as the height of the inner wedge plate 4a and the inner wedge plate stiffening rib 4b to ensure that the two are precisely embedded in the horizontal beam 1c, and to ensure that the inner wedge plate 4a and the horizontal beam 1c rotate together around the pin 2e.

[0077] A third elongated hole 4i is made in the inner wedge plate 4a, and an elongated hole is made in the web plate of the horizontal beam 1c to ensure that the inner wedge plate 4a and the horizontal beam 1c will not collide with the high-strength screw 4h or be sheared during the rotation of the inner wedge plate 4a and the horizontal beam 1c.

[0078] The prestress of the inner and outer wedge plate-disc spring reset system 4 is applied by tightening the fastening nuts 4g on both sides. The fourth elongated hole 4j at the bottom of the outer wedge plate 4c ensures that when the inclined surface of the inner wedge plate 4a slides to the inclined surface of the outer wedge plate 4c, the bottom end plate of the outer wedge plate 4c can freely undergo out-of-plane (Y direction) expansion displacement. At the same time, the out-of-plane (Y direction) expansion displacement will further compress the second disc spring assembly 4e, thereby providing greater prestress for the reset of the rotating support 1.

[0079] An outer wedge plate stiffening rib 4d is provided on the outer side of the outer wedge plate 4c. The outer wedge plate stiffening rib 4d is fixed perpendicularly to the outer wedge plate 4c to increase the overall rigidity of the outer wedge plate 4c. The bottom of the outer wedge plate stiffening rib 4d is connected and fixed to the lower main beam of the beam-through frame 5.

[0080] The following is combined with Figures 1 to 11 This paper further introduces the assembly process, working principle, and beneficial effects of the self-resetting lateral force resisting module applicable to beam-through frame 5.

[0081] The assembly process of the self-resetting lateral force resisting module applicable to beam-through frame 5 is as follows:

[0082] Step 1: The pin 2e passes through the pre-drilled holes on the first nut end plate 2c, the first disc spring assembly 2b, the outer thorn ring 2a, and the inner thorn ring 1d. The thorn surfaces on the outer thorn ring 2a and the inner thorn ring 1d are in an initial matching state. The pin nut 2d does not need to be pre-tightened, but it needs to be tightened to prevent loosening.

[0083] Step 2: Pay attention to the location of the first elongated hole 2f on the bottom end plate of the outer ring 2a of the thorny ring. After confirming that it can meet the out-of-plane deformation requirements caused by the expansion effect, tighten the bolt to connect the rotating support 1 and the thorny ring-disc spring reset system 2 to the main beam 5a of the beam-through frame 5.

[0084] Step 3: The inner wedge plate 4a and its inner wedge plate stiffening rib 4b are tightly embedded between the upper and lower flanges of the horizontal beam 1c. At the same time, the length of the inner wedge plate stiffening rib 4b in the Y direction should ensure that the inner wedge plate 4a protrudes slightly beyond the upper and lower flanges of the horizontal beam 1c, so as to ensure that the upper and lower flanges of the horizontal beam 1c will not collide with the outer wedge plate 4c during rotation.

[0085] Step 4: The high-strength lead screw 4h passes through the second nut end plate 4f, the second disc spring assembly 4e, the outer wedge plate 4c, the inner wedge plate 4a, and the web of the horizontal beam 1c; tighten the fastening nut 4g to apply the preload required by the inner and outer wedge plate-disc spring reset system 4. The screw is then bolted to the main beam 5a of the beam-through frame 5 through the fourth elongated hole 4j on the bottom end plate of the outer wedge plate 4c.

[0086] Step 5: Pay attention to the location of the bolt in the fourth elongated hole 4j on the bottom end plate of the outer wedge plate 4c. After confirming that it can meet the out-of-plane (Y direction) deformation requirements caused by the expansion effect, tighten the bolt to connect the inner and outer wedge plate-disc spring reset system 4 to the main beam 5a of the beam-through frame 5.

[0087] Step 6: The top of the inner shear steel plate 3a is welded to the horizontal beam 1c or bolted to the end plate. The bottom end plate of the outer restraint steel plate 3c is bolted to the main beam 5a of the beam-through frame 5. The fixing bolts 3d do not require pre-tightening, but must be tightened to prevent loosening.

[0088] The assembly process of this invention is now complete.

[0089] Combination Figures 10 to 21 The working principle of the self-resetting lateral force resisting module applicable to beam-through frame 5 is as follows:

[0090] exist Figures 10 to 21 The image shows the working principle of the self-resetting lateral force resisting module, while some component views are hidden for clarity.

[0091] Figure 10 This is a schematic diagram of the self-resetting lateral force resisting module before overall deformation; Figure 11 This is a schematic diagram of the self-resetting lateral force resisting module after overall deformation. When a horizontal earthquake occurs (X direction), the thorn ring-disc spring reset system 2 will realize the rotation of the rotating support 1 around the pin 2e (Y-axis direction). The rotating support 1 will drive the viscoelastic damping groove 3 and the inner and outer wedge plate-disc spring reset system 4 to generate reciprocating vertical displacement (Z direction).

[0092] Figure 12 This is a schematic diagram of the thorn ring-disc spring reset system 2 before deformation; Figure 13This is a schematic diagram of the thorn ring-disc spring reset system 2 after deformation. The relative rotation of the inner thorn ring 1d and the outer thorn ring 2a around the pin shaft 2e (Y-axis direction) causes the outer thorn ring 2a to expand outward (Y-direction), which further compresses the first disc spring assembly 2b, thereby providing a reset force for the rotating support 1.

[0093] Figure 14 This is a schematic diagram of the viscoelastic damping groove 3 before deformation; Figure 15 This is a schematic diagram of the viscoelastic damping groove 3 after deformation. Figure 16 This is a schematic diagram of the inner and outer wedge plate-disc spring reset system 4 before deformation; Figure 17 This is a schematic diagram of the inner and outer wedge plate-disc spring reset system 4 after deformation. The viscoelastic material layer 3b is stably energy-dissipating due to the reciprocating vertical displacement (Z direction) of the inner shear steel plate 3a. Meanwhile, as... Figure 17 As shown, the sliding of the inner wedge plate 4a and the outer wedge plate 4c from the vertical plane to the inclined plane converts the vertical displacement (Z direction) of the inner and outer wedge plate-disc spring reset system 4 into the outward (Y direction) expansion displacement of the inner wedge plate 4a and the outer wedge plate 4c, thereby further compressing the second disc spring assembly 4e, thus providing a reset force for the rotating support 1.

[0094] The beneficial effects of the self-resetting lateral force resisting module applicable to beam-through frame 5 are as follows:

[0095] exist Figure 18 In contrast to traditional beam-column bending steel frames, through-beam steel frames are prone to inter-story displacement concentrated in one or several floors due to the large cross-sectional height of the beams, the small cross-section of the columns which only bear vertical loads, and the hinged or semi-rigid connection of the beam-column joints. This is known as the "weak story effect".

[0096] exist Figure 19 In traditional construction, self-resetting energy-dissipating supports are typically arranged on the building structure in the form of "A-frame" or "V-shaped" supports, with the angle between the support and the main beam 5a being... Generally, within the range of 40 to 55 degrees, the lower end of the brace acts on the beam-column joint area, and the upper end acts on the mid-span of the main beam 5a. The brace only bears axial force. When an inter-story displacement of U (X direction) occurs, the axial deformation of each central brace is... 1=U cos .

[0097] like Figure 20 As shown, due to the special characteristics of the beam-through frame 5, the main beam 5a is typically 12 to 24 meters high with a large cross-sectional height, allowing the reaction force of the self-resetting module to act directly on the main beam 5a. Compared to traditional beam-column bending steel frames, the span-to-clear height ratio is significantly increased from 2 to 3-6. The self-resetting lateral force resisting module suitable for the beam-through frame 5, i.e., the included angle of the rotating brace 1 of this invention... Generally, it is between 25 and 35 degrees. When an interlayer displacement (X direction) of U occurs, the rotating support 1 will rotate around the pin 2e. Due to the lever principle, the displacement is amplified, and the vertical deformation (Z direction) at the damping point is... 2=U / tan .

[0098] At this time, the displacement amplification factor = 2 / 1 = 1 / (tan cos ); Let's analyze the amplification factor (traditional self-resetting energy dissipation support) using a common design example. The angle is set to 45 degrees. If we take 30 degrees, then the corresponding magnification factor is... This represents a 2.44-fold increase. That is, when the top experiences an inter-story displacement of U (X-direction), the viscoelastic damping groove 3 of this invention will experience a displacement of 2.44U (Z-direction), significantly increasing the module's energy dissipation efficiency and effectively mitigating the seismic response (inter-story displacement, floor acceleration) and damage to the main structure. Furthermore, since the viscoelastic energy dissipation system is velocity-type damping, its overall output is relatively small, and its placement on the main beam 5a of the beam-through frame does not adversely affect the overall structural stiffness.

[0099] Typically, the viscoelastic damping groove 3 and the inner and outer wedge plate-disc spring reset system 4 are arranged close together. Here, the distance difference between them is ignored, and the vertical displacement of the inner and outer wedge plate-disc spring reset system 4 of this invention is approximated as follows: 2. The ingenious construction of the wedge plate transforms the vertical displacement (Z direction) into an expansion displacement (Y direction) perpendicular to the wedge plate, such as... Figure 21 As shown, 3= 2 tan 2 ( (where is the inclination angle of the wedge plate's inclined surface). Furthermore, existing research has shown that, to prevent self-locking of the inner and outer wedge plates, the friction coefficients of the inner and outer wedge plates are less than the tan value of the wedge plate's inclined surface angle (i.e., ). <tan The coefficient of friction between general steel materials The value of is between 0.1 and 0.2; here we take 0.2. At this point... 3 = 0.4 2 = 0.976U. Ingeniously, the displacement amplified by the lever principle is scaled, resulting in overall displacement scaling and reducing the deformation requirements of the prestressed system. This effectively solves a current research pain point: the problem of unmet prestressed deformation requirements in the resetting system.

[0100] exist Figure 22 and Figure 23 The figures show the load-displacement curves of a prior art single-stage self-resetting energy-dissipating brace and the load-displacement curves of the present invention. Essentially, both the prior art single-stage self-resetting energy-dissipating brace and the present invention consist of a reset system and an energy-dissipating system, that is, in... Figure 22 and Figure 23 The total load-displacement curves are superimposed from the load-displacement curves of their respective reset systems and energy dissipation systems. Compared to traditional single-stage self-resetting energy dissipation supports (or lateral force resisting members), this invention utilizes the expansion effect of rotation between the inner and outer rings of the thorns (1d) and the expansion effect brought about by the inclined sliding of the wedge-shaped inner and outer plates to achieve structural variable stiffness and subsequent strengthening characteristics. Existing single-stage self-resetting energy dissipation supports change from initial stiffness k1 to later stiffness k2. In contrast, this invention changes from initial stiffness k1 to k2, and then to later strengthening k3. The "weak layer effect" existing in beam-through steel frames in high-rise building structures is expected to be improved or solved. At the same time, this invention amplifies displacement due to the lever principle ( Figure 20 The presence of the wedge-shaped inclined surface causes the prestress on the wedge surface to increase with sliding, and the increased prestress significantly increases the frictional energy dissipation between the wedge surfaces. Therefore, in the energy-dissipating system, this manifests as an increase in the energy-dissipating area, such as... Figure 23 As shown.

[0101] Overall, this invention presents a self-resetting lateral force resisting module suitable for beam-through frame 5, exhibiting variable stiffness and two-stage energy dissipation characteristics. Furthermore, due to the displacement amplification of the rotating brace 1 and the displacement scaling of the wedge-shaped plate structure, the energy dissipation capacity of the energy dissipation system is improved, while the prestress deformation requirement of the resetting system is reduced—a dual optimization. This significantly helps to mitigate the seismic response (inter-story displacement, floor acceleration) and structural damage of the main structure.

[0102] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A self-resetting lateral force resisting module suitable for beam-through frames, characterized in that: The self-resetting lateral force resisting module includes a rotating brace (1), a thorn ring-disc spring reset system (2), two sets of viscoelastic damping grooves (3), and two sets of inner and outer wedge plate-disc spring reset systems (4). The rotating brace (1) is an obtuse-angled triangular frame composed of a diagonal brace (1b) and a horizontal beam (1c). The obtuse angle apex of the obtuse-angled triangular frame is hinged to the bottom of the upper main beam of the beam-through frame (5). The center of the horizontal beam (1c) of the obtuse-angled triangular frame is connected to the thorn ring-disc spring reset system (2). The acute angle of the obtuse-angled triangular frame is connected to the inner and outer wedge plate-disc spring reset system (4). The viscoelastic damping groove (3) is connected below the horizontal beam (1c) and is located at the thorn ring-disc spring. Between the reset system (2) and the inner and outer wedge plate-disc spring reset system (4); the bottom of the thorn ring-disc spring reset system (2), the viscoelastic damping groove (3) and the inner and outer wedge plate-disc spring reset system (4) are respectively fixedly connected to the upper part of the lower main beam of the beam-through frame (5); the thorn ring-disc spring reset system (2) includes a thorn inner ring (1d), a thorn outer ring (2a), a first disc spring group (2b), a pin (2e), a first nut end plate (2c), and a pin nut (2d); the upper side of the thorn inner ring (1d) is fixed to the horizontal beam (1c); the two thorn outer rings (2a) clamp the inner thorn inner ring (1d), and the outer sides of the two thorn outer rings (2a) are fixed. The first disc spring assembly (2b) is set separately, and the outer side of the first disc spring assembly (2b) is the first nut end plate (2c). The pin (2e) passes through the first nut end plate (2c), the first disc spring assembly (2b), the outer thorn ring (2a) and the inner thorn ring (1d), and is fixed by the pin nut (2d). The rotation direction of the pin (2e) is perpendicular to the plane of the rotating support (1). The inner and outer wedge plate-disc spring reset system (4) includes an inner wedge plate (4a), an inner wedge plate stiffening rib (4b), an outer wedge plate (4c), a second disc spring assembly (4e), a second nut end plate (4f), a fastening nut (4g) and a high-strength screw (4h). The two inner wedge plates (4a) The two inner wedge plates (4a) are arranged on the front and rear sides of the horizontal beam (1c). The two inner wedge plates (4a) are clamped by the inner wedge plate stiffening ribs (4b). The inner wedge plate stiffening ribs (4b) are vertically fixed to the inner wedge plates (4a). The web of the horizontal beam (1c) can be inserted into the inner wedge plate stiffening ribs (4b) on both sides. The outer sides of the two inner wedge plates (4a) are respectively the outer wedge plates (4c). The contact surfaces of the inner wedge plates (4a) and the outer wedge plates (4c) are wedge-shaped. The outer sides of the two outer wedge plates (4c) are respectively provided with the second disc spring assembly (4e). The outer side of the second disc spring assembly (4e) is the second nut end plate (4f).The high-strength lead screw (4h) passes through the second nut end plate (4f), the second disc spring assembly (4e), the outer wedge plate (4c), the inner wedge plate (4a), and the web of the horizontal beam (1c), and is connected and fixed by the fastening nut (4g); the length direction of the high-strength lead screw (4h) is perpendicular to the plane direction of the rotating support (1); the outer wedge plate (4c) is perpendicularly connected and fixed to the lower main beam of the beam-through frame (5); the height of the web of the horizontal beam (1c) is the same as the height of the inner wedge plate (4a) and the inner wedge plate stiffening rib (4b).

2. The self-resetting lateral force resisting module suitable for beam-through frames according to claim 1, characterized in that: The inner ring (1d) and outer ring (2a) of the thorns are made of high-strength wear-resistant steel, and the thorn curvature angle of both is less than [value missing]. The value, It is the coefficient of friction between high-strength wear-resistant steels.

3. The self-resetting lateral force resisting module suitable for beam-through frames according to claim 1, characterized in that: The bottom of the outer ring of thorns (2a) is provided with a first elongated hole (2f) on the connecting end plate of the lower main beam. The length of the first elongated hole (2f) should be greater than the deformation requirement outside the plane of the rotating support (1) caused by the expansion effect.

4. A self-resetting lateral force resisting module suitable for beam-through frames according to claim 1, characterized in that: The viscoelastic damping groove (3) includes an inner shear steel plate (3a), a viscoelastic material layer (3b), an outer constraint steel plate (3c), and a fixing bolt (3d); the upper side of the inner shear steel plate (3a) is fixedly connected to the horizontal beam (1c) along the beam length direction, and the outer constraint steel plate (3c) clamps the inner shear steel plate (3a); the viscoelastic material layer (3b) is located between the outer constraint steel plate (3c) and the inner shear steel plate (3a); the fixing bolt (3d) passes through and fixes the inner shear steel plate (3a), the viscoelastic material layer (3b), and the outer constraint steel plate (3c).

5. A self-resetting lateral force resisting module suitable for beam-through frames according to claim 4, characterized in that: The perforation of the inner shear steel plate (3a) is a vertical second elongated hole (3e). The width of the second elongated hole (3e) should be slightly larger than the diameter of the fixing bolt (3d), and the length should be larger than the deformation range of the viscoelastic damping groove (3).

6. A self-resetting lateral force resisting module suitable for beam-through frames according to claim 1, 4, or 5, characterized in that: The viscoelastic damping groove (3) is arranged away from the thorn ring-disc spring reset system (2).

7. A self-resetting lateral force resisting module suitable for beam-through frames according to claim 1, characterized in that: The outer wedge plate (4c) is provided with an outer wedge plate stiffening rib (4d) on its outer side, and the outer wedge plate stiffening rib (4d) is fixed perpendicularly to the outer wedge plate (4c); the bottom of the outer wedge plate stiffening rib (4d) is connected and fixed to the lower main beam of the beam-through frame (5).

8. A self-resetting lateral force resisting module suitable for beam-through frames according to claim 1, characterized in that: A third elongated hole (4i) is provided on the inner wedge plate (4a), and an elongated hole is provided on the web of the horizontal beam (1c). The width of the third elongated hole (4i) and the elongated hole on the web is greater than the diameter of the high-strength screw (4h). The length of the third elongated hole (4i) and the elongated hole on the web should be greater than the deformation range of the inner and outer wedge plate-disc spring reset system (4). A fourth elongated hole (4j) is provided on the bottom of the outer wedge plate (4c) and the connecting end plate of the lower main beam. The length of the fourth elongated hole (4j) should be greater than the deformation requirement outside the plane of the rotating support (1) caused by the expansion effect.

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