CN214883044U - Shape memory alloy hoop suitable for reinforcing old steel pipe concrete arch bridge - Google Patents
Shape memory alloy hoop suitable for reinforcing old steel pipe concrete arch bridge Download PDFInfo
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- CN214883044U CN214883044U CN202022243521.3U CN202022243521U CN214883044U CN 214883044 U CN214883044 U CN 214883044U CN 202022243521 U CN202022243521 U CN 202022243521U CN 214883044 U CN214883044 U CN 214883044U
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Abstract
The utility model discloses a shape memory alloy cuff suitable for old steel pipe concrete arch bridge is consolidated, include: the hoop body is a steel ring with an opening at one side, a high-damping rubber layer is arranged on the inner wall of the hoop body, a plurality of mounting holes are uniformly formed in the high-damping rubber layer, and shape memory alloy stranded wires are mounted in the mounting holes; the plurality of pin buckles are uniformly arranged on the outer wall of the hoop body and aligned with the upper edge of the hoop body, the heating sheet is attached between the adjacent pin buckles, and the pin buckles are provided with clamping grooves; the telescopic bolt consists of a high-elasticity rubber plate and a bolt head, one end of the high-elasticity rubber plate is connected with the tail end of the hoop body, the other end of the high-elasticity rubber plate is connected with the bolt head, and the shape of the bolt head is matched with the clamping groove of the pin buckle. The hoop is simple in structure, high in elasticity and shape memory effect of the shape memory alloy stranded wires provide good tensile capacity for the hoop, the hoop is good in hardness, not prone to corrosion, strong in practicability and simple to install and disassemble, and the service life of the pile hoop is prolonged.
Description
Technical Field
The utility model relates to a stake cover hoop device field for tubular pile relates to a shape memory alloy hoop suitable for old steel pipe concrete arch bridge is consolidated.
Background
The steel tube concrete is widely applied in the field of bridge engineering due to the characteristics of firmness, durability, economy, applicability and the like. In China, the quantity and the types of the concrete filled steel tubes are various and different in length. Although it has the advantages of simple construction, steel saving, good fireproof performance and the like, the steel pipe concrete structure still has some inevitable diseases, such as cracking, loosening, pitted surface, honeycomb and steel bar leakage, corrosion and the like of concrete. These problems have great potential for the safety of bridge structures and have to attract great attention. It is particularly noted that concrete-filled steel tubes play a crucial role as horizontal force-resisting members and vertical load-bearing members under the action of earthquakes. Therefore, a reinforcing structure is needed to reinforce the steel pipe concrete and improve the safety of the bridge structure.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a shape memory alloy cuff suitable for old steel pipe concrete arch bridge is consolidated, its high damping, durability, corrosion resistance and self advantage that resets can improve the security of bridge structures.
The utility model discloses a shape memory alloy cuff suitable for old steel pipe concrete arch bridge is consolidated, include: the hoop body is a steel ring with an opening at one side, a high-damping rubber layer is arranged on the inner wall of the hoop body, a plurality of mounting holes are uniformly formed in the high-damping rubber layer, and shape memory alloy stranded wires are mounted in the mounting holes; the plurality of pin buckles are uniformly arranged on the outer wall of the hoop body and are aligned with the upper edge of the hoop body, the heating sheet is attached to the outer wall of the hoop body between the adjacent pin buckles, and the pin buckles are provided with clamping grooves; the telescopic bolt consists of a high-elasticity rubber plate and a bolt head, one end of the high-elasticity rubber plate is connected with the tail end of the hoop body, the other end of the high-elasticity rubber plate is connected with the bolt head, and the shape of the bolt head is matched with the shape of a clamping groove of the pin buckle.
The utility model discloses an among the shape memory alloy cuff suitable for old steel pipe concrete arch bridge is consolidated, the tail-end welding of cuff body has two first reinforcement pieces, and the one end welding of bolt head has two second reinforcement pieces, all be equipped with the arch on first reinforcement piece and the second reinforcement piece, the both ends of high elasticity rubber slab all are equipped with the recess, and it is fixed that high elasticity rubber slab bonds again after protruding and recess cooperation joint with cuff body and bolt head.
The utility model discloses an in being applicable to reinforced shape memory alloy cuff of old steel pipe concrete arch bridge, it has the baffle still to weld on the outer wall of cuff body, the baffle aligns with the lower limb of cuff body.
The utility model discloses an in the shape memory alloy cuff suitable for old steel pipe concrete arch bridge is consolidated, the high damping rubber layer bonds on the inner wall of cuff body through glued layer.
The utility model discloses a shape memory alloy cuff suitable for old steel pipe concrete encircles reinforced (rfd) bridge adopts the shape memory alloy stranded wire of the high elasticity that has, shape memory effect to provide tensile ability for the cuff, and the cuff hardness is better, and is difficult for corroding, and the practicality is strong, and the installation is dismantled simply, has increased the life of cuff. The hoop is arranged on the outer side of the concrete filled steel tube, and the concrete filled steel tube is fastened and reinforced through the cooperation of the pin buckle and the pin head. The hoop deforms after being stressed in a martensite phase state, plastic deformation with a certain length still exists after unloading, and cannot be recovered, at the moment, the shape memory alloy wire is heated by the heating sheet until the austenite finishing temperature, the alloy hoop can be recovered to the original shape before deformation by the memory effect, and then the steel pipe concrete is repaired.
Drawings
FIG. 1 is a structural diagram of a shape memory alloy hoop suitable for reinforcing an old steel pipe concrete arch bridge of the present invention;
FIG. 2 is a plan view of a shape memory alloy hoop suitable for reinforcing an old steel pipe concrete arch bridge according to the present invention;
fig. 3 is a schematic view of the connection of the telescopic latch and the ferrule body.
Detailed Description
As shown in fig. 1 and 2, the present invention provides a shape memory alloy hoop suitable for reinforcing an old steel pipe concrete arch bridge, comprising: the hoop body 1, a plurality of pins 3, a plurality of heating plates 4 and a telescopic bolt. The hoop body 1 is a steel ring with an opening formed in one side, the high-damping rubber layer 2 is arranged on the inner wall of the hoop body 1, a plurality of mounting holes are uniformly formed in the high-damping rubber layer 2, the shape memory alloy stranded wires 7 are mounted in the mounting holes, and the number and the diameter of the mounting holes are determined by the number and the diameter of the shape memory alloy stranded wires 7. The pin buckles 3 are uniformly arranged on the outer wall of the hoop body 1 and aligned with the upper edge of the hoop body 1, the heating sheet 4 is attached to the outer wall of the hoop body 1 between the adjacent pin buckles 3, and the pin buckles 3 are provided with clamping grooves; the telescopic bolt consists of a high-elasticity rubber plate 8 and a bolt head 5, one end of the high-elasticity rubber plate 8 is connected with the tail end of the hoop body 1, the other end of the high-elasticity rubber plate is connected with the bolt head 5, and the shape of the bolt head 5 is matched with the shape of a clamping groove of the pin buckle 3. After the shape memory alloy stranded wire 7 is inserted into the mounting hole, the free bending of the shape memory alloy stranded wire when being pressed is ensured. The alloy hoop is arranged on the outer side of the concrete filled steel tube, and the concrete filled steel tube is hooped through the cooperation of the pin buckle 3 and the pin head 5 so as to reinforce the concrete filled steel tube. The alloy hoop deforms after being stressed in a martensite phase state, plastic deformation with a certain length still exists after unloading, and cannot be recovered, at the moment, the shape memory alloy wire is heated by the heating sheet 4 until the austenite finishing temperature, the alloy hoop can be recovered to the original shape before deformation by the memory effect, and then the concrete filled steel tube is repaired.
As shown in fig. 3, two first reinforcing plates 9 are welded at the tail end of the ferrule body 1, two second reinforcing plates 10 are welded at one end of the plug pin head 5, protrusions are arranged on the first reinforcing plates 9 and the second reinforcing plates 10, grooves are arranged at two ends of the high-elasticity rubber plate 8, and the high-elasticity rubber plate 8, the ferrule body 1 and the plug pin head 5 are fixedly bonded after being clamped in a matched mode through the protrusions and the grooves.
A baffle 6 is welded on the outer wall of the hoop body 1, and the baffle 6 is aligned with the lower edge of the hoop body 1. The latch head 5 is prevented from moving up and down at the latch 3 to cause the ferrule to fall off.
The high-damping rubber layer 2 is bonded on the inner wall of the hoop body 1 through a cementing layer.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the spirit of the present invention, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A shape memory alloy hoop suitable for reinforcing an old steel pipe concrete arch bridge is characterized by comprising the following components: the hoop body is a steel ring with an opening at one side, a high-damping rubber layer is arranged on the inner wall of the hoop body, a plurality of mounting holes are uniformly formed in the high-damping rubber layer, and shape memory alloy stranded wires are mounted in the mounting holes; the plurality of pin buckles are uniformly arranged on the outer wall of the hoop body and are aligned with the upper edge of the hoop body, the heating sheet is attached to the outer wall of the hoop body between the adjacent pin buckles, and the pin buckles are provided with clamping grooves; the telescopic bolt consists of a high-elasticity rubber plate and a bolt head, one end of the high-elasticity rubber plate is connected with the tail end of the hoop body, the other end of the high-elasticity rubber plate is connected with the bolt head, and the shape of the bolt head is matched with the shape of a clamping groove of the pin buckle.
2. The shape memory alloy hoop suitable for reinforcing an old steel pipe concrete arch bridge as claimed in claim 1, wherein two first reinforcing pieces are welded at the tail end of the hoop body, two second reinforcing pieces are welded at one end of the pin head, the first reinforcing pieces and the second reinforcing pieces are provided with protrusions, two ends of the high-elasticity rubber plate are provided with grooves, and the high-elasticity rubber plate, the hoop body and the pin head are fixedly bonded after being clamped in the protrusions and the grooves in a matched mode.
3. The shape memory alloy hoop suitable for reinforcing an old steel pipe concrete arch bridge according to claim 1, wherein a baffle plate is welded on the outer wall of the hoop body, and the baffle plate is aligned with the lower edge of the hoop body.
4. The shape memory alloy hoop suitable for reinforcing an old steel pipe concrete arch bridge as claimed in claim 1, wherein the high damping rubber layer is bonded to the inner wall of the hoop body through a cement layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022243521.3U CN214883044U (en) | 2020-10-10 | 2020-10-10 | Shape memory alloy hoop suitable for reinforcing old steel pipe concrete arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022243521.3U CN214883044U (en) | 2020-10-10 | 2020-10-10 | Shape memory alloy hoop suitable for reinforcing old steel pipe concrete arch bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214883044U true CN214883044U (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022243521.3U Active CN214883044U (en) | 2020-10-10 | 2020-10-10 | Shape memory alloy hoop suitable for reinforcing old steel pipe concrete arch bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214883044U (en) |
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2020
- 2020-10-10 CN CN202022243521.3U patent/CN214883044U/en active Active
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