Replaceable energy dissipation support reinforcement structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2026-08-11
AI Technical Summary
[0002]目前建筑抗震加固领域广泛应用的增大截面法、外包钢法等传统工艺，存在明显技术瓶颈，依赖结构自身弹塑性变形耗散地震能量，残余变形率普遍超过15%（如钢筋混凝土连梁震后残余变形≥15%），导致震后修复需大规模拆除重建，成本激增3-5倍，现场湿作业占比高，某框架结构加固工程因支模、浇筑等工序耗时达45天，严重影响建筑正常使用，单纯增强主体刚度易引发“刚度突变”，某办公楼加固后底层剪力集中系数升至1.8，远超规范限值1.5，现有摩擦阻尼器、粘滞阻尼器等装置存在关键技术缺陷，常规螺栓预紧式摩擦阻尼器在1000次循环荷载后，预紧力衰减达30%以上，导致耗能能力骤降；
（1）、该可更换式消能支撑加固结构，横向肋板增强主体的抗扭刚度，防止局部屈曲；吊装环便于震后整体更换受损阻尼器模块，碟形弹簧与弹性垫层的组合设计使结构在地震后可自动复位，残余变形≤5%，显著优于传统钢筋混凝土连梁（残余变形≥15%），摩擦片与钢板的多组交替设计使耗能能力达到普通连梁的5~8倍，可承受100吨以上水平剪力，弹性垫层的动态刚度（37.36kN/mm）与阻尼比（0.063）显著降低结构振动响应，轮轨垂向力减少15%~20%，阻尼器壳体通过定位销、螺栓与主体快速连接，更换时间≤2小时，维护成本降低60%。
Smart Images
Figure CN224621166U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a replaceable energy dissipation support reinforcement structure. Background Technology
[0002] Currently, traditional methods widely used in the field of seismic reinforcement of buildings, such as enlarging the cross-section and external steel cladding, have significant technical bottlenecks. They rely on the structure's own elastoplastic deformation to dissipate seismic energy, and the residual deformation rate generally exceeds 15% (e.g., the residual deformation of reinforced concrete coupling beams after an earthquake is ≥15%). This leads to the need for large-scale demolition and reconstruction after an earthquake, resulting in a 3-5 fold increase in cost. The proportion of on-site wet work is high. In one frame structure reinforcement project, the time taken for formwork, pouring and other processes reached 45 days, which seriously affected the normal use of the building. Simply increasing the stiffness of the main structure can easily lead to "stiffness mutation". After reinforcement, the shear concentration coefficient of the bottom floor of an office building increased to 1.8, far exceeding the standard limit of 1.5. Existing friction dampers, viscous dampers and other devices have key technical defects. After 1000 cycles of load, the preload of conventional bolt-preloaded friction dampers decreases by more than 30%, resulting in a sharp drop in energy dissipation capacity. The friction coefficient of steel-to-steel friction surfaces varies by ±20%, making it difficult to guarantee the expected design effect. Most dampers lack an elastic recovery mechanism. In a certain earthquake simulation test, the residual displacement angle of the installation structure of a traditional friction damper reached 1.2%, exceeding the repairable threshold of 0.5% in the "Code for Seismic Design of Buildings". The replacement of a bridge damping device requires more than 8 hours of operation with professional hoisting equipment, and the interface compatibility is poor, with products from different manufacturers not being interchangeable. The existing support structure connection method has significant hidden dangers. The anti-slip coefficient of bolted connections is only 0.3-0.4. A reinforced node of a stadium experienced a 2mm slippage under a rare earthquake, leading to damper failure. The tolerance of traditional pin-shaft connections is generally ±0.5mm, making it difficult to guarantee effective contact of the friction surfaces. The actual energy dissipation efficiency of a damper in a certain project was only 65% of the design value. The permanent deformation rate of ordinary rubber pads exceeded 30% after 50,000 cycles of compression, failing to meet the 50-year design life requirement. Utility Model Content
[0003] The purpose of this invention is to solve at least one of the technical problems existing in the prior art by providing a replaceable energy dissipation support and reinforcement structure that can solve the above-mentioned problem.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a replaceable energy dissipation support and reinforcement structure, including a main body with an I-shaped cross-section, ear plates fixedly connected to both ends of the main body, a positioning hole provided on one side of the ear plate, and a positioning pin movably installed in the positioning hole; The main body is fixedly connected to baffles at both ends, and the main body is fixedly connected to tenons at both ends inside the baffles. The tenons have serrated anti-slip textures on both sides.
[0005] Preferably, the main body is provided with damper housings at both ends, and friction plates and steel plates are movably arranged inside the damper housings. There are three sets of friction plates and steel plates that are alternately engaged. The surface of the damper housing is provided with threaded holes that are through holes. Bolts are rotatably connected in the threaded holes, and disc springs are provided at the ends of the bolts.
[0006] Preferably, the damper housing has a mortise at the end away from the bolt, the surface of the mortise is provided with a serrated anti-slip texture to match the tenon, and an elastic pad is fixedly connected to the bottom of the mortise. The elastic pad is made of EPDM rubber or microporous polyurethane material.
[0007] Preferably, the damper housing has a pin hole, and the pin hole and the positioning pin are in transition fit, with the installation tolerance controlled within the specified metric system.
[0008] Preferably, transverse ribs are fixedly connected to both sides of the main body, and the transverse ribs are vertically welded to the flanges of the main body.
[0009] Preferably, the bolt and the disc spring cooperate to form a preload adjustment mechanism, and the bolt can be rotated to achieve stepless adjustment of the preload.
[0010] Preferably, the serrated anti-slip texture on the surface of the tenon and mortise increases the coefficient of friction.
[0011] Preferably, lifting rings are fixedly connected to both sides of the damper housing. The lifting rings are made of QB steel and are connected to the damper housing by welding or bolts, supporting overall replacement after an earthquake.
[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) The replaceable energy dissipation support reinforcement structure has transverse ribs to enhance the torsional stiffness of the main body and prevent local buckling; the lifting ring facilitates the overall replacement of damaged damper modules after the earthquake; the combination design of disc springs and elastic pads enables the structure to automatically reset after the earthquake, with residual deformation ≤5%, which is significantly better than traditional reinforced concrete coupling beams (residual deformation ≥15%); the multiple alternating designs of friction plates and steel plates enable the energy dissipation capacity to reach 5 to 8 times that of ordinary coupling beams, and can withstand horizontal shear force of more than 100 tons; the dynamic stiffness (37.36kN / mm) and damping ratio (0.063) of the elastic pads significantly reduce the structural vibration response, and the wheel-rail vertical force is reduced by 15% to 20%; the damper shell is quickly connected to the main body through positioning pins and bolts, the replacement time is ≤2 hours, and the maintenance cost is reduced by 60%.
[0013] (2) The replaceable energy dissipation support reinforcement structure uses ozone-resistant EPDM rubber for the elastic pad layer. After millions of cycles of compression, the preload of the disc spring can be infinitely adjusted (0~50kN) by bolts, which is suitable for areas with different seismic intensities (6~8 degrees). The optimized cross-section of the I-shaped main body and the transverse rib (reducing the amount of steel by 12%) reduces material costs while ensuring rigidity. It breaks through the traditional single friction energy dissipation mode. Through the synergistic effect of the friction plate-steel plate interface and the elastic pad layer, a composite mechanism of "sliding energy dissipation + material energy dissipation" is achieved. The equivalent viscous damping ratio is increased to 0.25~0.3. The elastic recovery force of the disc spring and the elastic pad layer (≥80% of the initial stiffness) is combined with the modular replacement function, taking into account both rapid post-earthquake repair and long-term use performance. The dual positioning of the positioning pin transition fit (H7 / m6) and the tenon anti-slip texture ensures that the installation error is controlled within ±0.1mm, while providing redundant anti-slip capability. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the replaceable energy dissipation support reinforcement structure of this utility model; Figure 2 This is a schematic diagram of the replaceable energy dissipation support reinforcement structure of this utility model; Figure 3 This is a schematic diagram of the replaceable energy dissipation support reinforcement structure of this utility model; Figure 4 This is a schematic diagram of the replaceable energy dissipation support reinforcement structure of this utility model.
[0015] Reference numerals: 1. Main body; 2. Ear plate; 3. Positioning pin; 4. Damper housing; 5. Bolt; 6. Lifting ring; 7. Baffle; 8. Transverse rib; 9. Tenon; 10. Elastic pad; 11. Steel plate; 12. Friction pad; 13. Serrated anti-slip pattern; 14. Mortise; 15. Pin hole; 16. Positioning hole. Detailed Implementation
[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0018] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0020] Please see Figure 1-4 This utility model provides a technical solution: a replaceable energy dissipation support reinforcement structure includes a main body 1, the main body 1 has an I-shaped cross section, and transverse ribs 8 are fixedly connected to both sides of the main body 1; The main body 1 has ear plates 2 fixedly connected to both ends. A positioning hole 16 is provided on one ear plate 2, and a positioning pin 3 is movably installed in the positioning hole 16. The main body 1 has baffles 7 fixedly connected to both sides of the two ends. Inside the baffles 7, the main body has tenons 9 fixedly connected to both ends of the two ends. The tenons 9 have serrated anti-slip textures 13 on both sides of their surfaces. The main body 1 has damper housings 4 at both ends. Friction plates 12 and steel plates 11 are movably arranged inside the damper housings 4. There are three sets of friction plates 12 and three sets of steel plates 11, which are alternately matched. The surface of the damper housing 4 is provided with a threaded hole, which is a through hole. A bolt 5 is rotatably connected inside the threaded hole, and a disc spring is provided at the end of the bolt 5. The damper housing 4 has a mortise 14 at the end away from the bolt 5. The surface of the mortise 14 is fitted with a tenon 9 and has a sawtooth anti-slip texture 13. An elastic pad 10 is fixedly connected to the bottom of the mortise 14. The damper housing 4 has a small hole 15, which is fitted with the positioning small hole 3. Lifting rings 6 are fixedly connected to both sides of the damper housing 4.
[0021] Working principle: When an earthquake causes structural deformation, the main body 1 (I-shaped section) transmits the horizontal shear force to the damper shell 4 through the end lugs 2. Inside the damper shell, three sets of friction plates 12 are alternately stacked with steel plates 11, forming a tight contact under the preload of bolts 5 and disc springs. During the reciprocating motion of the earthquake, relative sliding occurs between the friction plates and the steel plates, converting kinetic energy into heat energy dissipation through friction. The adaptive compensation characteristics of the disc springs (small deformation, large load-bearing capacity, and high space utilization) ensure that the preload remains stable under cyclic loads, avoiding frictional attenuation due to bolt loosening. The tenons 9 at both ends of the main body 1 are embedded in the mortise 14 of the damper housing 4. The sawtooth anti-slip pattern 13 increases the contact friction coefficient (μ≈0.4~0.6) and forms additional friction energy dissipation at the tenon-mortise interface. The elastic pad 10 at the bottom of the mortise (such as EPDM rubber or microporous polyurethane) absorbs energy through nonlinear deformation of the material and provides elastic recovery force to reduce residual deformation of the structure. This dual mechanism of "friction energy dissipation + elastic buffer" improves the energy dissipation efficiency by more than 30%. The positioning pin 3 of the ear plate 2 and the pin hole 15 of the damper housing 4 adopt an transition fit (H7 / m6), which ensures the installation accuracy (tolerance ±0.02mm) and allows for minor adjustments to adapt to field errors. The rigid connection between the baffle 7 and the tenon 9 further restricts the lateral displacement of the damper housing, ensuring that the friction interface always maintains effective contact and avoiding energy loss failure due to misalignment. The transverse rib plate 8 enhances the torsional stiffness of the main body 1 and prevents local buckling; the lifting ring 6 facilitates the overall replacement of damaged damper modules after the earthquake; the combination design of disc spring and elastic pad allows the structure to automatically reset after the earthquake, with residual deformation ≤5%, which is significantly better than traditional reinforced concrete coupling beams (residual deformation ≥15%). The alternating design of multiple friction plates and steel plates enables the energy dissipation capacity to reach 5 to 8 times that of ordinary connecting beams, and can withstand horizontal shear forces of more than 100 tons. The dynamic stiffness (37.36 kN / mm) and damping ratio (0.063) of the elastic pad significantly reduce the structural vibration response, and the wheel-rail vertical force is reduced by 15%~20%. The damper housing is quickly connected to the main body via locating pins and bolts, reducing replacement time to ≤2 hours and maintenance costs by 60%. The lifting ring 6 and standardized interface support prefabricated installation, improving construction efficiency by 40%. The combination of serrated anti-slip texture (tooth depth 1.5~2mm) and transition fit positioning pin makes the anti-slip safety factor of the mortise and tenon connection ≥2.5; The elastic padding layer is made of ozone-resistant ethylene propylene diene monomer (EPDM) rubber. After millions of compression cycles, the preload of the disc spring can be infinitely adjusted (0~50kN) via bolts to adapt to areas with different seismic intensities (6~8 degrees). The optimized cross-section of the I-shaped main body and transverse ribs (reducing steel consumption by 12%) reduces material costs while ensuring rigidity. It breaks through the traditional single friction energy dissipation mode and achieves a composite mechanism of "sliding energy dissipation + material energy dissipation" through the synergistic effect of the friction plate-steel plate interface and elastic pad. The equivalent viscous damping ratio is increased to 0.25~0.3. The elastic recovery force of the disc spring and elastic pad (≥80% of the initial stiffness) combined with the modular replacement function takes into account both rapid post-earthquake repair and long-term service performance. The dual positioning of the positioning pin transition fit (H7 / m6) and the tenon anti-slip texture keeps the installation error within ±0.1mm, while providing redundant anti-slip capability.
[0022] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A replaceable energy dissipation brace reinforcement structure comprising a main body (1) having a cross section in the shape of an I-beam, characterized in that: The main body (1) has ear plates (2) fixedly connected to both ends. A positioning hole (16) is provided on one side of the ear plate (2), and a positioning pin (3) is movably installed in the positioning hole (16). The main body (1) is fixedly connected to baffles (7) on both sides. The main body (1) inside the baffles (7) is fixedly connected to tenons (9) on both sides. The tenons (9) have serrated anti-slip textures (13) on both sides. The main body (1) has damper housings (4) at both ends. Friction plates (12) and steel plates (11) are movably arranged inside the damper housings (4). There are three sets of friction plates (12) and steel plates (11) that are alternately engaged. The surface of the damper housings (4) has threaded holes that are through holes. Bolts (5) are rotatably connected in the threaded holes. A disc spring is provided at the end of the bolts (5). The damper housing (4) has a mortise (14) at the end away from the bolt (5). The surface of the mortise (14) is fitted with a tenon (9) and has a serrated anti-slip texture (13). An elastic pad (10) is fixedly connected to the bottom of the mortise (14). The elastic pad (10) is made of EPDM rubber or microporous polyurethane material.
2. The replaceable energy dissipation support reinforcement structure according to claim 1, characterized in that: The damper housing (4) has a pin hole (15), and the pin hole (15) and the positioning pin (3) adopt an H7 / m6 transition fit, with the installation tolerance controlled within ±0.02mm.
3. The replaceable energy dissipation support reinforcement structure according to claim 2, characterized in that: The bolt (5) and the disc spring cooperate to form a preload adjustment mechanism. The bolt (5) can be rotated to achieve stepless adjustment of the preload from 0 to 50 kN.
4. The replaceable energy dissipation support reinforcement structure according to claim 3, characterized in that: The tooth depth of the sawtooth anti-slip pattern (13) on the surface of the tenon (9) and the mortise (14) is 1.5-2mm, the tooth tip angle is 60°, and the friction coefficient is increased to 0.4-0.
6.
5. The replaceable energy dissipation support reinforcement structure according to claim 4, characterized in that: The damper housing (4) is fixedly connected to both sides with lifting rings (6). The lifting rings (6) are made of Q345B steel and are connected to the damper housing (4) by welding or bolts to support the overall replacement after the earthquake.