Detachable bridge pier reinforcing and anti-collision integrated structure
By surrounding the bridge pier with steel frames and spliced corrugated steel pipes, combined with the inner and outer filling materials, an integrated solution for bridge pier reinforcement and collision prevention is achieved, and the existing bridge pier reinforcement space is solved, which improves the bearing capacity and durability of the bridge pier, and simplifies the construction and repair process.
Patent Information
- Application Number
- CN202421504459.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing bridge piers take up a large space during reinforcement, have low reliability in reinforcement cross-section, relatively poor safety, low replacement efficiency and poor durability.
The removable pier reinforcement and anti-collision integrated structure is adopted, including a steel skeleton arranged in sequence outside the existing reinforced concrete pier, an inner layer spliced corrugated steel pipe and an outer layer spliced corrugated steel pipe, and a reinforcement layer and an anti-collision layer are filled between the inner and outer layers. The lateral stiffness of the corrugated steel pipe is used to provide sufficient lateral constraints, and rapid replacement and repair are achieved through the detachable connection.
This structure integrates the reinforcement and anti-collision functions of the bridge pier, which significantly improves the bearing capacity, ductility and deformation capabilities of the bridge pier, reduces the cross-sectional area of the reinforcement layer, enhances the interface adhesion, reduces the construction cycle and construction workload, and improves the anti-collision performance and durability.
Smart Images
Figure CN222744829U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge pier reinforcement, repair and anti-collision, and in particular to a detachable bridge pier reinforcement and anti-collision integrated structure. Background Art
[0002] Bridge structures need a lot of renovation and reinforcement due to disasters or environmental factors such as earthquakes, strong winds, river scouring, freeze-thaw cycles, improper design and construction, and management errors. Existing reinforcement methods have their own applicability: for example, the commonly used method of increasing the cross-section generally requires the use of space in the original structure, the template work is large, and the construction period is long; the reinforcement method of sticking carbon fiber or steel plates is highly dependent on adhesives, and the interface is easily damaged under reciprocating loads such as earthquakes.
[0003] At the same time, due to the large volume of shipping, frequent landslides and traffic accidents, bridge piers face many risks such as collisions with ships, rolling stones and vehicles. Bridge piers are prone to brittle failure under impact, which in turn causes the overall collapse of the bridge, posing a serious threat to the safety of life and property. Therefore, the demand for anti-collision design of bridge piers is increasing. The commonly used anti-collision measure for bridge piers is to set up rigid anti-collision barriers on both sides of the road. This measure will take up too much road space, and has high rigidity and poor energy consumption capacity, which will cause greater harm to the colliding vehicles and the people inside; and rigid anti-collision barriers often need to be rebuilt after being damaged by impact, and the replacement rate is low, which is not conducive to traffic travel.
[0004] In addition, bridge piers are often exposed to corrosive environments such as open air, lakes, and oceans for a long time, and are often eroded by corrosive substances in the air or water and impacted by mud and sand. Long-term environmental corrosion and damage accumulation make the bridge pier body and its anti-collision device prone to corrosion damage.
[0005] Therefore, the design of reinforcement and anti-collision devices for existing bridge piers needs to comprehensively consider their spatial flexibility, reliability of the reinforcement interface, construction convenience, safety, and durability. Utility Model Content
[0006] The technical problems to be solved by the utility model are:
[0007] In order to solve the problems of large space occupied by existing bridge piers during reinforcement, low reliability of reinforced cross-section, relatively poor safety, low replacement efficiency and poor durability.
[0008] The utility model adopts the following technical solutions to solve the above technical problems:
[0009] The utility model provides a detachable integrated structure for pier reinforcement and anti-collision, comprising a steel frame, an inner spliced corrugated steel pipe and an outer spliced corrugated steel pipe which are sequentially arranged outside an existing reinforced concrete pier, the steel frame, the inner spliced corrugated steel pipe and the outer spliced corrugated steel pipe are all arranged on a cap, an inner reinforcement layer is filled between the inner spliced corrugated steel pipe and the existing reinforced concrete pier, an outer anti-collision layer is filled between the inner spliced corrugated steel pipe and the outer spliced corrugated steel pipe, the inner spliced corrugated steel pipe comprises a plurality of inner corrugated steel plates, two adjacent inner corrugated steel plates are connected by an inner connecting portion, the outer spliced corrugated steel pipe comprises a plurality of outer corrugated steel plates, two adjacent outer corrugated steel plates are connected by an outer detachable connecting portion.
[0010] Furthermore, the bottom of the steel frame is anchored on the cap, and the stress-bearing steel bars in the steel frame are welded or overlapped with the ends, middle or bottom of the stress-bearing steel bars of the existing reinforced concrete pier.
[0011] Furthermore, the inner layer connection portion is an overlapping arrangement of the ends of two adjacent inner layer corrugated steel plates, and is fixed by bolts splicing a plurality of inner layer corrugated steel plates; or both side ends of each inner layer corrugated steel plate are connected to one side of a corresponding inner layer corrugated steel plate connecting angle steel, and the other side of the inner layer corrugated steel plate connecting angle steel connecting two adjacent inner layer corrugated steel plates is in contact, and is fixed by bolts splicing a plurality of inner layer corrugated steel plates.
[0012] Furthermore, the outer detachable connecting part is that both side ends of each outer corrugated steel plate are connected to the corresponding C-type pin connecting steel plate, the C-type pin connecting steel plate includes a detachable connecting part and a corrugated steel plate connecting part, the corrugated steel plate connecting part is a plate-like structure, and both side ends of each outer corrugated steel plate are connected to the corrugated steel plate connecting part, and the detachable connecting parts of the C-type pin connecting steel plates connecting two adjacent outer corrugated steel plates are in contact and then connected through the C-type pin.
[0013] Furthermore, the inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe are both anchored on the pedestal, and the bottom end of the inner layer spliced corrugated steel pipe and the bottom end of the outer layer spliced corrugated steel pipe are both lower than the bottom end of the steel skeleton.
[0014] Furthermore, the inner reinforcement layer is one or a combination of self-compacting fine stone concrete, high-strength grouting material or ultra-high performance concrete; and the outer anti-collision layer is foamed aluminum material.
[0015] Furthermore, the strength of the inner reinforcement layer is at least one level higher than the concrete strength of the existing reinforced concrete piers.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] 1. The structure integrates the functions of bridge pier reinforcement and anti-collision, and has strong functionality. The corrugated steel pipe in the structure can provide sufficient lateral constraints for existing reinforced concrete bridge piers due to its large lateral stiffness, significantly improving the bearing capacity, ductility and deformation capacity of existing bridge piers; under the same force, compared with the traditional reinforced concrete enlarged cross-section reinforcement method, it can effectively reduce the cross-sectional area of the reinforcement layer, thereby expanding the available road space; and the corrugated steel pipe can form an interface bite with the newly poured concrete or grouting layer, effectively limiting the shrinkage, creep and other non-stress deformation of the reinforced layer concrete. Compared with the traditional steel bonding method and fiber cloth reinforcement method, its interface bonding is stronger;
[0018] 2. Through factory prefabrication and quick on-site splicing, the construction period is greatly reduced; compared with the traditional pier reinforcement method, its transportation and installation are more convenient, the construction speed is faster, and no additional formwork engineering is required during on-site pouring, so the construction workload is smaller;
[0019] 3. Anti-collision materials are filled between the inner and outer layers of the spliced corrugated steel pipes to form a sandwich anti-collision structure. Compared with the traditional rigid guardrail, this structure has the advantages of moderate rigidity, significant energy dissipation capacity, and can ensure the safety of vehicles and personnel that collide, and reduce economic losses. At the same time, due to the use of attached anti-collision treatment, compared with traditional anti-collision guardrails, the available road space is expanded;
[0020] 4. The outer layer of the corrugated steel pipe is connected by a detachable pin connection. When it is deformed by a vehicle impact, the C-type pin can be pulled out in time, and a new outer layer of the corrugated steel pipe can be replaced, and the anti-collision material can be added and quickly installed, so that the anti-collision device can quickly restore its function, reflecting the advantages of low repair difficulty, strong detachability and little impact on traffic.
[0021] 5. Due to the protection of the galvanized layer, the durability of the bridge piers reinforced with corrugated steel pipes is effectively guaranteed. In extreme environments, the galvanized layer can also be used in combination with anti-corrosion coatings to further improve the durability of the bridge piers after reinforcement. If necessary, assembled stainless corrugated steel pipes can also be used to further improve the durability of the bridge piers after reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A three-dimensional diagram of a detachable bridge pier reinforcement and anti-collision integrated structure in an embodiment of the utility model;
[0023] Figure 2 A top view of a detachable bridge pier reinforcement and anti-collision integrated structure in an embodiment of the utility model;
[0024] Figure 3 Schematic diagram of the connection between the inner corrugated steel plate and the inner connecting part in the embodiment of the utility model Figure 1 ;
[0025] Figure 4 for Figure 3 A top view of
[0026] Figure 5 The schematic diagram of the connection between the inner corrugated steel plate and the inner connecting part in the embodiment of the utility model is shown in FIG. Figure 2 ;
[0027] Figure 6 for Figure 5 A top view of
[0028] Figure 7 This is a schematic diagram of the connection between the outer corrugated steel plate and the outer detachable connecting part in the embodiment of the utility model;
[0029] Figure 8 It is a schematic diagram of the C-type plug connection process in the outer detachable connection part in the embodiment of the utility model;
[0030] Fig. 9 for Figure 7 Top view of the .
[0031] Description of reference numerals:
[0032] 1. Existing reinforced concrete bridge piers; 2. Steel bar skeleton; 3. Inner layer arc-shaped sections spliced with corrugated steel pipe segments; 4. Inner layer straight sections spliced with corrugated steel pipe segments; 5. Inner layer connection parts; 6. Outer layer detachable connection parts; 7. Outer layer arc-shaped sections spliced with corrugated steel pipe segments; 8. Outer layer straight sections spliced with corrugated steel pipe segments; 9. Abutment; 10. Inner layer reinforcement layer; 11. Outer layer anti-collision layer; 5-1. Inner layer corrugated steel plates connected with angle steels; 5-2. Bolts for splicing inner layer corrugated steel plates; 6-1. C-type pins; 6-2. Bolts for splicing outer layer corrugated steel plates; 6-3. C-type pins connecting steel plates. DETAILED DESCRIPTION
[0033] In the description of the present utility model, it should be noted that the terminology nouns in the various embodiments, such as words indicating directions such as "upper", "lower", "front", "back", "left", "right", etc., are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the referred elements and devices must be operated according to the specific directions and specified operations and methods and structures in the specification. Such directional nouns do not constitute limitations on the present utility model.
[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0035] Specific implementation plan 1: Combine Figures 1 to 9As shown, the utility model provides a detachable integrated structure for pier reinforcement and anti-collision, including a steel frame 2, an inner layer spliced corrugated steel pipe and an outer layer spliced corrugated steel pipe which are sequentially arranged outside an existing reinforced concrete pier 1, the steel frame 2, the inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe are all arranged on a cap 9, an inner layer reinforcement layer 10 is arranged between the inner layer spliced corrugated steel pipe and the existing reinforced concrete pier 1, an outer layer anti-collision layer 11 is arranged between the inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe, the inner layer spliced corrugated steel pipe includes a plurality of inner layer corrugated steel plates, two adjacent inner layer corrugated steel plates are connected by an inner layer connecting portion 5, the outer layer spliced corrugated steel pipe includes a plurality of outer layer corrugated steel plates, two adjacent outer layer corrugated steel plates are connected by an outer layer detachable connecting portion 6.
[0036] The existing reinforced concrete pier 1, steel skeleton 2, inner layer spliced corrugated steel pipe and outer layer spliced corrugated steel pipe are similar in shape and are spaced a certain distance apart. The spacing between two adjacent layers can be designed according to reinforcement and anti-collision requirements.
[0037] Preferably, the bottom of the steel skeleton 2 is anchored on the pedestal, and the anchoring length meets the requirements for the steel bar anchoring length in GB50010-2010; the steel skeleton 2 is partially welded or overlapped with the original stressed steel bars, and the steel skeleton 2 can be welded or overlapped with the end, middle or bottom of the original stressed steel bars.
[0038] Preferably, the inner layer connection part 5 is an overlapping arrangement of the ends of two adjacent inner layer corrugated steel plates, and is fixed by bolts 5-2 for splicing the inner layer corrugated steel plates; or the two side ends of each inner layer corrugated steel plate are fixed to one side of the inner layer corrugated steel plate connecting angle steel 5-1 by connecting bolts, and the other side edges of the inner layer corrugated steel plate connecting angle steel 5-1 of two adjacent inner layer corrugated steel plates are in contact and are fixed by bolts 5-2 for splicing the inner layer corrugated steel plates.
[0039] The bottom of the inner layer spliced corrugated steel pipe is anchored on the pedestal 9, that is, a groove of a certain depth is chiseled on the pedestal 9 corresponding to the shape of the inner layer spliced corrugated steel pipe, and then the inner layer spliced corrugated steel pipe is placed therein and temporarily fixed, and then anchored on the pedestal 9 along with the concrete pouring; and the bottom of the inner layer spliced corrugated steel pipe is lower than the bottom of the steel frame 2, which can reduce the influence of the steel frame 2 on the inner layer spliced corrugated steel pipe when it is damaged by force, thereby ensuring the reinforcement effect of the corrugated steel pipe on the bridge pier.
[0040] Preferably, both side ends of each outer corrugated steel plate are connected to a C-shaped latch connecting steel plate 6-3, and the C-shaped latch connecting steel plate 6-3 includes a detachable connecting portion and a corrugated steel plate connecting portion, and the corrugated steel plate connecting portion is a plate-like structure. Both ends of each outer corrugated steel plate are fixed to the corresponding corrugated steel plate connecting portion by bolts 6-2 for splicing the outer corrugated steel plates. After the detachable connecting portions of the C-shaped latch connecting steel plates 6-3 connecting two adjacent outer corrugated steel plates are in contact, they are plugged and fixed by the C-shaped latch 6-1. After the plugging is completed, the side wall of the C-shaped latch 6-1 is flush with the side wall of the corrugated steel plate connecting portion. It is used to realize the detachable setting of the outer layer of spliced corrugated steel pipes through the C-type pin 6-1. The splicing method here is a mortise and tenon joint structure. Compared with the traditional bolt connection, it can save the heavy workload of bolt tightening, the process is simpler and the splicing efficiency is higher; and when the bridge pier is hit by a vehicle or falling rocks and the outer anti-collision layer is damaged, the C-type pin 6-1 can be quickly pulled out, and the damaged outer corrugated steel plate at the corresponding position can be replaced to achieve rapid splicing. After the damaged anti-collision material is supplemented, the anti-collision function of the bridge pier is quickly restored, thereby realizing the rapid repair of the bridge pier and greatly reducing the impact on traffic operation.
[0041] The bottom of the outer layer spliced corrugated steel pipe is anchored on the pedestal 9, that is, a groove of a certain depth is chiseled on the pedestal 9 corresponding to the shape of the outer layer spliced corrugated steel pipe, and then the outer layer spliced corrugated steel pipe is placed therein and temporarily fixed, and then anchored on the pedestal 9 along with the concrete pouring; and the bottom of the outer layer spliced corrugated steel pipe is lower than the bottom of the steel frame 2.
[0042] Preferably, the thickness of the inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe are both 1.0mm-5.0mm; during construction, they can be spliced into rectangular, circular, and round-end shapes according to the shape of the pier; the inner layer corrugated steel plate and the outer layer corrugated steel plate can be first rolled into shape in the factory and then transported to the site for splicing. During transportation, the same type of corrugated steel plates can be stacked and then transported as a whole, which can save floor space during transportation and facilitate handling.
[0043] When the existing reinforced concrete pier 1 is round-end shaped, the steel skeleton 2, the inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe are all round-end shaped similar to the existing reinforced concrete pier 1. At this time, the inner layer spliced corrugated steel pipe includes two parallel and oppositely arranged inner layer straight section spliced corrugated steel pipe segments 4 and inner layer arc section spliced corrugated steel pipe segments 3 on both sides. The inner layer straight section spliced corrugated steel pipe segments 4 and the inner layer arc section spliced corrugated steel pipe segments 3 both include a plurality of inner layer corrugated steel plates connected by an inner layer connecting portion 5; the outer layer spliced corrugated steel pipe includes two parallel and oppositely arranged outer layer straight section spliced corrugated steel pipe segments 8 and outer layer arc section spliced corrugated steel pipe segments 7 on both sides. The outer layer straight section spliced corrugated steel pipe segments 8 and the outer layer arc section spliced corrugated steel pipe segments 7 both include a plurality of outer layer corrugated steel plates connected by an outer layer detachable connecting portion 6.
[0044] Preferably, the corrugation size of the outer layer spliced corrugated steel pipe is a large corrugation size of 68mm×13mm (wavelength×wave height) or a large corrugation size larger than the above size, such as 78mm×25mm, 125mm×25mm, see "Cold-bent Corrugated Steel Pipe" (GB / T 34567-2017) for details, so that the outer layer spliced corrugated steel pipe can fully utilize the ductility and deformation capacity of the corrugated structure when subjected to impact; while absorbing the impact energy, it reduces the damage to the impacting vehicle and the people inside.
[0045] The outer walls of the inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe are both provided with a galvanized layer, and the thickness of the galvanized layer must meet the relevant provisions of GB / T 2518-2019; galvanized corrugated steel pipes can be used in combination with anti-corrosion coatings in extreme environments; and when necessary, the base material of the corrugated steel pipe can be replaced with stainless steel to further improve its anti-corrosion performance. The inner layer corrugated steel plate connecting angle steel 5-1, inner layer corrugated steel plate splicing bolts 5-2, C-type plugs 6-1, outer layer corrugated steel plate splicing bolts 6-2, C-type plug connecting steel plates 6-3 and connecting bolts are all provided with a galvanized layer.
[0046] Preferably, the inner reinforcement layer 10 is arranged between the inner spliced corrugated steel and the existing reinforced concrete pier 1. The inner reinforcement layer 10 can be self-compacting fine stone concrete, high-strength grouting material or ultra-high performance concrete (UHPC), or other materials with at least one grade higher concrete strength than the existing pier. When the structure is an underwater reinforcement structure, underwater high-strength grouting material can be used. When the structure is used in a low temperature environment, it needs to have anti-freezing properties, and it also needs to have underwater anti-dispersion properties during underwater construction.
[0047] The grade refers to the concrete strength grade, which is essentially determined through experiments or differentiated according to the "Concrete Structure Design Code".
[0048] The thickness of the inner reinforcement layer 10 may be 30 mm to 150 mm, and may also be designed according to actual reinforcement requirements.
[0049] Preferably, the outer anti-collision layer 11 can be foamed aluminum or other anti-collision materials. Compared with concrete materials, foamed aluminum materials have excellent properties such as light weight, high specific strength, strong vibration reduction and energy absorption, and low rigidity. Together with the outer layer of assembled corrugated steel pipes, they form the anti-collision layer of the pier.
[0050] Specific implementation plan 2: Combined Figures 1 to 9 As shown, the utility model provides a construction method of a detachable bridge pier reinforcement and anti-collision integrated structure, comprising the following steps:
[0051] S100, pretreatment of the existing reinforced concrete bridge pier 1, including roughening the surface of the existing reinforced concrete bridge pier 1 and drilling holes at the bottom;
[0052] The surface roughening includes chiseling horizontal and vertical stripes on the surface of the existing reinforced concrete bridge pier 1 to increase the bonding between the new and old concrete. The depth of the chiseled stripes is generally 3mm-10mm. During the construction process, the interface between the new and old concrete can be treated by high-pressure water jetting and rebar planting. After roughening, the surface of the existing reinforced concrete bridge pier 1 needs to be cleaned;
[0053] S200, placing a steel skeleton 2, and anchoring the steel skeleton 2 on the cap 9 outside the existing reinforced concrete pier 1 according to the designed spacing, the bottom of the steel skeleton 2 being deeper than the bottom of the original steel bars, and the stress-bearing steel bars of the steel skeleton 2 being welded or overlapped with the ends, middle and bottom of the original steel bars;
[0054] The number of newly added steel reinforcement skeletons should be determined according to design requirements;
[0055] S300, assembling the inner layer spliced corrugated steel pipe, on the outer side of the steel skeleton 2, according to the designed spacing, assemble the prefabricated inner layer corrugated steel plate by connecting the inner layer corrugated steel plate to the angle steel 5-1 or by overlapping, the bottom of the inner layer assembled corrugated steel pipe is anchored on the cap 9, and the bottom is deeper than the bottom of the steel skeleton 2;
[0056] S400, pouring the inner reinforcement layer 10, using the inner spliced corrugated steel pipe, the existing reinforced concrete bridge pier 1 and the cap 9 as the non-dismantling formwork, and pouring the inner reinforcement layer 10 in the space enclosed by them;
[0057] S500, assembling the outer layer spliced corrugated steel pipe. After the inner layer reinforcement layer 10 of step S400 solidifies, the outer side of the inner layer spliced corrugated steel pipe is connected to the C-type plug connection steel plate 6-3 by using the C-type plug 6-1 according to the designed spacing to achieve detachable assembly. The bottom of the outer layer assembled corrugated steel pipe is anchored on the cap 9, and the bottom is deeper than the bottom of the steel skeleton 2;
[0058] S600, pouring of the outer anti-collision layer 11, using the inner spliced corrugated steel pipe, the outer spliced corrugated steel pipe and the base 9 as the non-dismantling formwork, pouring the outer anti-collision layer 11 in the space enclosed by them, and forming a sandwich anti-collision structure after solidification.
[0059] After a collision occurs, the outer assembled corrugated steel pipe can be disassembled and the outer anti-collision layer 11 can be replaced.
[0060] The other combinations and connection relationships of this embodiment are the same as those of the first embodiment.
[0061] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art of the utility model may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.
Claims
1. A detachable bridge pier reinforcement and anti-collision integrated structure, characterized in that: The invention comprises a steel frame (2), an inner layer spliced corrugated steel pipe and an outer layer spliced corrugated steel pipe which are sequentially arranged outside an existing reinforced concrete bridge pier (1); the steel frame (2), the inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe are all arranged on a cap (9); an inner layer reinforcement layer (10) is filled between the inner layer spliced corrugated steel pipe and the existing reinforced concrete bridge pier (1); an outer layer anti-collision layer (11) is filled between the inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe; the inner layer spliced corrugated steel pipe comprises a plurality of inner layer corrugated steel plates; two adjacent inner layer corrugated steel plates are connected by an inner layer connecting portion (5); the outer layer spliced corrugated steel pipe comprises a plurality of outer layer corrugated steel plates; two adjacent outer layer corrugated steel plates are connected by an outer layer detachable connecting portion (6).
2. The detachable bridge pier reinforcement and anti-collision integrated structure according to claim 1 is characterized in that: The bottom of the steel frame (2) is anchored on the pedestal (9), and the stress-bearing steel bars in the steel frame (2) are welded or overlapped with the ends, middle or bottom of the stress-bearing steel bars of the existing reinforced concrete bridge pier (1).
3. The detachable bridge pier reinforcement and anti-collision integrated structure according to claim 2 is characterized in that: The inner layer connection part (5) is arranged by overlapping the ends of two adjacent inner layer corrugated steel plates and fixed by a plurality of inner layer corrugated steel plate splicing bolts (5-2); or the two side ends of each inner layer corrugated steel plate are connected to one side of the corresponding inner layer corrugated steel plate connecting angle steel (5-1), and the other side of the inner layer corrugated steel plate connecting angle steel (5-1) connecting the two adjacent inner layer corrugated steel plates is in contact and fixed by a plurality of inner layer corrugated steel plate splicing bolts (5-2).
4. The detachable bridge pier reinforcement and anti-collision integrated structure according to claim 3 is characterized by: The outer layer detachable connection part (6) is that both side ends of each outer layer corrugated steel plate are connected to the corresponding C-shaped plug connection steel plate (6-3), and the C-shaped plug connection steel plate (6-3) includes a detachable connection part and a corrugated steel plate connection part. The corrugated steel plate connection part is a plate-like structure. Both side ends of each outer layer corrugated steel plate are connected to the corrugated steel plate connection part. The detachable connection parts of the C-shaped plug connection steel plates (6-3) connected by two adjacent outer layer corrugated steel plates are in contact and then plugged in through the C-shaped plug (6-1).
5. The detachable integrated bridge pier reinforcement and anti-collision structure according to claim 4 is characterized in that: The inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe are both anchored on the base (9), and the bottom ends of the inner layer spliced corrugated steel pipe and the outer layer spliced corrugated steel pipe are both lower than the bottom end of the steel frame (2).
6. The detachable integrated bridge pier reinforcement and anti-collision structure according to claim 5 is characterized in that: The outer anti-collision layer (11) is made of foamed aluminum material.
7. The detachable bridge pier reinforcement and anti-collision integrated structure according to claim 6 is characterized by: The strength of the inner reinforcement layer (10) is at least one level higher than the concrete strength of the existing reinforced concrete bridge pier (1).