Connecting support for reinforcing steel structure
By designing connecting supports at the junction of the old and new structures and using ear plates, pads, and fastening bolts, the problems of stress concentration and deformation incoordination at the junction of the old and new structures were solved, and the coordinated operation and service life of the structures were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN HENGDE TESTING CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-21
AI Technical Summary
In existing building renovation and expansion projects, stress concentration and deformation incoordination at the connection nodes between the old and new structures can lead to concrete cracking or weld fatigue damage, which is particularly evident under complex conditions such as wind loads and temperature fluctuations in open-air environments.
The design of the connection support between the reinforced concrete frame and the newly added steel structure adopts the ear plate and pad structure of the first and second connection seats, which are connected by fastening bolts and equipped with reinforcing ribs and rubber rings to achieve deformation coordination and force transmission between the old and new structures.
It effectively coordinates the differential settlement between the old and new structures, reduces additional internal forces, avoids concrete cracking and weld fatigue damage, and extends the life of the building renovation.
Smart Images
Figure CN224149229U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of structural reinforcement technology in building engineering, and in particular to a connecting support for steel structure reinforcement. Background Technology
[0002] In existing building renovation and expansion projects, steel frame structures are often added to the outside of the original reinforced concrete frame to meet the needs of functional expansion or load-bearing capacity improvement. The core challenge of such projects lies in the reliable connection and coordinated operation of the new and old structures. Especially in open-air environments, the connection nodes need to cope with complex conditions such as wind loads, temperature fluctuations, and rainwater erosion.
[0003] Traditional connection methods often use welding or chemical anchors for direct bonding, but these methods have significant drawbacks:
[0004] First, the difference in stiffness between steel and concrete leads to stress concentration at the joints, which can easily cause concrete cracking or weld fatigue damage when the relative height between the two changes (especially under seismic loads). Second, rigid connections cannot coordinate the settlement differences between the old and new structures, which can easily generate additional internal forces during long-term use.
[0005] Therefore, there is an urgent need to develop a connection support that combines efficient force transmission with coordinated deformation, so as to enable the new and old structures to work together and extend the life of the building renovation. Utility Model Content
[0006] To address the aforementioned issues, this invention provides a connecting support for reinforcing steel structures, which can coordinate the differential settlement between new and old structures, effectively improve the stress on the steel structure, and reduce the lateral deformation of the steel structure.
[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: It includes a reinforced concrete frame and a newly added steel structure. A first connecting seat is fixedly installed on the reinforced concrete frame, and a second connecting seat is fixedly installed on the newly added steel structure. The first connecting seat includes a first ear plate and a first pad plate. The first pad plate is fixedly installed on the side wall of the reinforced concrete frame, and the first ear plate is fixedly installed on the first pad plate. The second connecting seat includes a second ear plate and a second pad plate. The second pad plate is fixedly installed on the side wall of the newly added steel structure, and the second ear plate is fixedly installed on the second pad plate. An elongated hole is formed on the first ear plate, and a short hole is formed on the second ear plate. A fastening bolt is inserted between the elongated hole and the short hole, and the first ear plate and the second ear plate are connected by the fastening bolt.
[0008] Preferably, both the first ear plate and the second ear plate are vertically arranged plate structures.
[0009] Preferably, the first pad is provided with a rebar near the side of the reinforced concrete frame, and the rebar is inserted into the reinforced concrete frame and anchored to the reinforced concrete frame.
[0010] Preferably, a first reinforcing rib is provided between the first ear plate and the first pad, and a second reinforcing rib is provided between the second ear plate and the second pad.
[0011] Preferably, the first reinforcing rib further includes a first short rib and a first long rib, the first short rib being disposed on the side of the first ear plate close to the second ear plate, and the first long rib being disposed on the side of the first ear plate away from the second ear plate.
[0012] Preferably, the second reinforcing rib further includes a second short rib and a second long rib, the second short rib being disposed on the side of the second ear plate close to the first ear plate, and the second long rib being disposed on the side of the second ear plate away from the first ear plate.
[0013] Preferably, a rubber ring is installed between the first ear plate and the second ear plate, and the fastening bolt is inserted into the rubber ring.
[0014] Compared with the prior art, the method provided in this application has the following technical advantages:
[0015] The elongated hole on the first ear plate and the short hole on the second ear plate allow the fastening bolts to have a certain amount of adjustment in the vertical direction. This accommodates the settlement of the reinforced concrete frame and the newly added steel structure, avoids cracking of the reinforced concrete frame or fatigue damage to the welds caused by additional internal forces, enables the old and new structures to work together, and extends the life of the building renovation. Attached Figure Description
[0016] Figure 1 This is a top view of the connecting support for steel structure reinforcement according to this utility model.
[0017] Figure 2 This is a side view of the connecting support for steel structure reinforcement according to this utility model.
[0018] Figure 3 This is a schematic diagram of the first connecting seat in the connecting support for steel structure reinforcement of this utility model.
[0019] In the attached diagram: 1. Reinforced concrete frame; 2. Newly added steel structure; 3. First connecting seat; 4. Second connecting seat; 5. Fastening bolt; 6. Rubber ring; 31. First ear plate; 32. Oblong hole; 33. First pad plate; 34. Rebar; 35. First reinforcing bar; 36. First short bar; 37. First long bar; 41. Second ear plate; 42. Short hole; 43. Second pad plate; 44. Second reinforcing bar; 45. Second short bar; 46. Second long bar. Detailed Implementation
[0020] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0021] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure 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 this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0023] Example 1
[0024] like Figures 1-3As shown, a connecting support for steel structure reinforcement includes a reinforced concrete frame 1 and a newly added steel structure 2. A first connecting seat 3 is fixedly installed on the reinforced concrete frame 1, and a second connecting seat 4 is fixedly installed on the newly added steel structure 2. The first connecting seat 3 includes a first ear plate 31 and a first pad 33. The first pad 33 is fixedly installed on the side wall of the reinforced concrete frame 1, and the first ear plate 31 is fixedly installed on the first pad 33. The second connecting seat 4 includes a second ear plate 41 and a second pad 43. The second pad 43 is fixedly installed on the side wall of the newly added steel structure 2, and the second ear plate 41 is fixedly installed on the second pad 43. An elongated hole 32 is opened on the first ear plate 31, and a short hole 42 is opened on the second ear plate 41. A fastening bolt 5 is inserted between the elongated hole 32 and the short hole 42, and the first ear plate 31 and the second ear plate 41 are fitted together by the fastening bolt 5.
[0025] The fastening bolt 5 is inserted into the first ear plate 31 through the elongated hole 32 on the first ear plate 31, and then into the second ear plate 41 through the short hole 42 on the second ear plate 41. This arrangement ensures a stable connection between the fastening bolt 5 and the second ear plate 41. At the same time, the elongated hole 32 on the first ear plate 31 provides a certain space for the fastening bolt 5 to move in the vertical direction. This allows the fastening bolt to adapt to the settlement of the reinforced concrete frame 1 and the newly added steel structure 2 through the elongated hole 32, preventing the additional internal force generated by the settlement of the newly added steel structure 2 from being completely transferred to the reinforced concrete frame 1 through the second connecting seat 4, thus avoiding concrete cracking or weld fatigue damage. This achieves coordinated work between the old and new structures and extends the life of the building renovation. In addition, by setting the first pad 33, the contact area of the first connecting seat 3 is increased, reducing the pressure on the side wall of the reinforced concrete frame 1 and protecting the reinforced concrete frame 1.
[0026] Example 2
[0027] like Figures 1-3 As shown, both the first ear plate 31 and the second ear plate 41 are vertically arranged plate structures.
[0028] The first pad 33 is provided with a rebar 34 near the side of the reinforced concrete frame 1. The rebar 34 is inserted into the reinforced concrete frame 1 and anchored to the reinforced concrete frame 1.
[0029] By setting up the rebar 34, the stress points of the first pad 33 can be increased, the stress condition of the first connecting seat 3 can be improved, and the stability of the first connecting seat 3 on the reinforced concrete frame 1 can be better ensured.
[0030] Example 3
[0031] like Figure 1As shown, a first reinforcing rib 35 is provided between the first ear plate 31 and the first pad 33, and a second reinforcing rib 44 is provided between the second ear plate 41 and the second pad 43.
[0032] The first reinforcing rib 35 also includes a first short rib 36 and a first long rib 37. The first short rib 36 is disposed on the side of the first ear plate 31 close to the second ear plate 41, and the first long rib 37 is disposed on the side of the first ear plate 31 away from the second ear plate 41.
[0033] The second reinforcing rib 44 also includes a second short rib 45 and a second long rib 46. The second short rib 45 is disposed on the side of the second ear plate 41 close to the first ear plate 31, and the second long rib 46 is disposed on the side of the second ear plate 41 away from the first ear plate 31.
[0034] By setting the first reinforcing rib 35 and the second reinforcing rib 44, the connection between the first ear plate 31 and the first pad 33, and between the second ear plate 41 and the second pad 43 is made more stable, which can effectively improve the stress situation of the first pad 33 and the second ear plate 41, making it less likely for the first ear plate 31 and the first pad 33, and the second ear plate 41 and the second pad 43 to break.
[0035] The first short rib 36 serves a reinforcing function while also providing space for the contact between the first ear plate 31 and the second ear plate 41, while the first long rib 37 provides support for the entire first ear plate 31.
[0036] The second short rib 45 serves a reinforcing function while also providing space for the contact between the second ear plate 41 and the first ear plate 31, while the second long rib 46 provides support for the entire second ear plate 41.
[0037] Example 4
[0038] like Figure 1 As shown, a rubber ring 6 is detachably installed between the first ear plate 31 and the second ear plate 32, and the fastening bolt 5 is inserted into the rubber ring 6.
[0039] The rubber ring 6 has a cushioning effect, which can increase the overall structure's durability and energy dissipation and shock absorption capabilities.
[0040] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0041] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A connecting support for reinforcing steel structures, characterized in that, It includes a reinforced concrete frame (1) and a newly added steel structure (2), wherein a first connecting seat (3) is fixedly installed on the reinforced concrete frame (1) and a second connecting seat (4) is fixedly installed on the newly added steel structure (2); The first connecting seat (3) includes a first ear plate (31) and a first pad plate (33). The first pad plate (33) is fixedly installed on the side wall of the reinforced concrete frame (1), and the first ear plate (31) is fixedly installed on the first pad plate (33). The second connecting seat (4) includes a second ear plate (41) and a second pad plate (43). The second pad plate (43) is fixedly installed on the side wall of the newly added steel structure (2), and the second ear plate (41) is fixedly installed on the second pad plate (43). The first ear plate (31) has an elongated hole (32) and the second ear plate (41) has a short hole (42). A fastening bolt (5) is inserted between the elongated hole (32) and the short hole (42). The first ear plate (31) and the second ear plate (41) are connected by the fastening bolt (5).
2. A connecting seat for reinforcing a steel structure according to claim 1, characterized in that Both the first ear plate (31) and the second ear plate (41) are vertically arranged plate structures.
3. A connecting seat for reinforcing a steel structure according to claim 1, characterized in that The first pad (33) is provided with a rebar (34) near the side of the reinforced concrete frame (1), the rebar (34) is inserted into the reinforced concrete frame (1) and anchored to the reinforced concrete frame (1).
4. The connecting seat for reinforcing a steel structure according to claim 1, characterized in that A first reinforcing rib (35) is provided between the first ear plate (31) and the first pad (33), and a second reinforcing rib (44) is provided between the second ear plate (41) and the second pad (43).
5. A connecting seat for reinforcing a steel structure according to claim 4, characterized in that The first reinforcing rib (35) further includes a first short rib (36) and a first long rib (37). The first short rib (36) is disposed on the side of the first ear plate (31) close to the second ear plate (41), and the first long rib (37) is disposed on the side of the first ear plate (31) away from the second ear plate (41).
6. A connecting seat for reinforcing a steel structure according to claim 4, characterized in that The second reinforcing rib (44) also includes a second short rib (45) and a second long rib (46). The second short rib (45) is disposed on the side of the second ear plate (41) close to the first ear plate (31), and the second long rib (46) is disposed on the side of the second ear plate (41) away from the first ear plate (31).
7. A connecting seat for reinforcing a steel structure according to claim 1, characterized in that A rubber ring (6) is installed between the first ear plate (31) and the second ear plate (41), and the fastening bolt (5) is inserted into the rubber ring (6).