A replaceable high-strength prefabricated assembled bridge pier

Abstract

The present invention relates to a replaceable high-strength prefabricated assembled bridge pier, including a cap, a prefabricated pier column arranged on the cap, and a cap beam arranged on the prefabricated pier column, the upper and lower ends of the prefabricated pier column are respectively fixedly connected to the connection structure embedded in the cap and the cap beam to form a whole, the connection structure includes a sleeve embedded in the cap or the cap beam and open at one end, a plurality of fixed blocks are arranged on the inner wall of the sleeve, and the inner side surfaces of all the fixed blocks are together surrounded to form a cavity for the upper end or the lower end of the prefabricated pier column to match and insert. Compared with the prior art, the structure of the present invention is light and high-strength, the construction method is simple, and the operation is convenient. For bridge piers damaged after an earthquake, it can be quickly replaced and traffic can be restored in time. The good recovery performance after an earthquake is of great significance to the economic development of the society.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering and relates to a replaceable high-strength prefabricated assembled bridge pier. Background Art

[0002] In recent years, my country's transportation infrastructure, especially urban expressways, has developed rapidly, and urban viaducts have played an important role. The huge construction demand has put forward higher requirements for construction quality and efficiency. The construction method of on-site pouring of concrete has a long maintenance cycle and a large amount of on-site work, which will have a great impact on the surrounding environment and traffic. At present, more and more concrete bridge components are being manufactured and processed in factories. After the components are manufactured, they are transported to the bridge site for assembly, which greatly reduces on-site work, speeds up the construction progress, realizes rapid construction, and reduces the impact on the surrounding areas of the project.

[0003] The seismic performance of bridge structures depends to a large extent on the seismic performance of piers. Piers are also the components most easily damaged by earthquakes. The good post-earthquake recovery performance of replaceable piers is of great significance to the economic development of society. Summary of the invention

[0004] The purpose of the present invention is to provide a replaceable high-strength prefabricated assembled bridge pier with a lightweight and high-strength structure, a simple construction method, and convenient operation. It can also achieve rapid replacement of bridge piers damaged after an earthquake and restore traffic in a timely manner. Good post-earthquake recovery performance is of great significance to the economic development of society.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] On the one hand, the present invention proposes a replaceable high-strength prefabricated assembled bridge pier, comprising a pedestal, a prefabricated pier column arranged on the pedestal, and a cap beam arranged on the prefabricated pier column, the upper and lower ends of the prefabricated pier column are respectively fixedly connected to the connecting structure embedded in the pedestal and the cap beam to form a whole, the connecting structure comprises a sleeve embedded in the pedestal or the cap beam and open at one end, a plurality of fixing blocks are arranged on the inner wall of the sleeve, and the inner side surfaces of all the fixing blocks together surround and form a cavity into which the upper end or the lower end of the prefabricated pier column can be matched and inserted.

[0007] Furthermore, the prefabricated pier column is composed of an inner steel pipe, an outer steel pipe sleeved outside the inner steel pipe, and concrete poured between the inner steel pipe and the outer steel pipe, wherein the central axes of the inner steel pipe and the outer steel pipe coincide with each other.

[0008] Furthermore, the connection structure also includes an inner wedge block and an outer wedge block, the inner wedge block and the outer wedge block have corresponding positions and numbers, the inner wedge block is fixed on the outer surface of the prefabricated pier column, and when the prefabricated pier column is inserted into the sleeve, the inner wedge block is correspondingly inserted into the gap between the two fixed blocks, and the outer wedge block is also fixedly placed in the space between the inner wedge block and the inner wall of the sleeve, so that the prefabricated pier column is connected and fixed to the sleeve. The vertical lifting force of the pier column can be decomposed into horizontal force by the slope between the inner and outer wedge blocks. Due to the existence of the horizontal force, a vertical static friction force is generated between the outer wedge block and the inner wall of the sleeve to resist the vertical lifting force of the pier column, thereby fixing the pier column on the sleeve.

[0009] Furthermore, the width of the inner wedge-shaped block along the circumference of the prefabricated pier matches the gap between two adjacent fixing blocks.

[0010] Furthermore, the outer wedge block and the inner wedge block have the same slope.

[0011] More preferably, the slope of the outer wedge block and the inner wedge block is 5-15°.

[0012] Furthermore, the connection structure also includes an annular cover plate, which has a middle through hole for the prefabricated pier to pass through, and the end of the fixed block is also provided with a reserved bolt hole. The annular cover plate is also provided with a connecting through hole corresponding to the position of the reserved bolt hole, and connecting bolts are respectively passed through the connecting through hole and the reserved bolt hole, so that the annular cover plate can be removably fixed and covered at the opening position of the sleeve, thereby clamping the outer wedge block, so that the prefabricated pier is fixed to the connection structure without falling out or rotating.

[0013] More preferably, the inner diameter of the annular cover plate is larger than the outer diameter of the prefabricated pier, and the outer diameter of the annular cover plate is larger than the outer diameter of the sleeve.

[0014] Furthermore, shear nails are welded on the outer side of the sleeve.

[0015] Furthermore, the opening end of the sleeve is flush with the upper surface of the base and the lower surface of the cap beam respectively.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] (1) After the components are manufactured and processed in the factory, they are transported to the bridge site for assembly, which speeds up the construction progress, realizes rapid construction, and reduces the impact on the surrounding areas of the project.

[0018] (2) Bridge piers damaged after an earthquake can be quickly replaced and traffic restored in a timely manner. Good post-earthquake recovery performance is of great significance to the economic development of society.

[0019] (3) The structure is light and high-strength, the construction method is simple, the operation is convenient, the construction efficiency is high, and the structural durability can meet the requirements.

[0020] (4) From the perspective of long-term social development, it has good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of the circled part;

[0023] Figure 3 for Figure 2 AA section diagram of ;

[0024] Figure 4 for Figure 2 BB cross-section diagram;

[0025] Figure 5 for Figure 3 Schematic diagram of CC section;

[0026] Figure 6 is a plan view of the annular cover plate;

[0027] Description of the markings in the figure:

[0028] 1-cap, 2-prefabricated pier, 201-external steel pipe, 202-concrete, 203-inner steel pipe, 3-cap beam, 4-sleeve, 5-shear nail, 6-fixing block, 7-reserved bolt hole, 8-external wedge block, 9-inner wedge block, 10-annular cover plate, 11-connecting bolt, 12-connecting through hole. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0030] In the following implementation manners or examples, unless otherwise specified, functional components or structures are conventional components or structures used in the art to achieve corresponding functions.

[0031] See also Figures 1 to 6As shown, the present invention proposes a replaceable high-strength prefabricated assembled pier, including a cap 1, a prefabricated pier column 2 arranged on the cap 1, and a cap beam 3 arranged on the prefabricated pier column 2, the upper and lower ends of the prefabricated pier column 2 are respectively fixedly connected to the connecting structure embedded in the cap 1 and the cap beam 3 to form a whole, the connecting structure includes a sleeve 4 embedded in the cap 1 or the cap beam 3 and open at one end, a plurality of fixing blocks 6 are arranged on the inner wall of the sleeve 4, and the inner side surfaces of all the fixing blocks 6 are together surrounded to form a cavity for the upper end or the lower end of the prefabricated pier column 2 to match and insert.

[0032] In a specific implementation, please refer to Figure 1 As shown, the prefabricated pier 2 is composed of an inner steel pipe 203, an outer steel pipe 201 sleeved outside the inner steel pipe 203, and concrete 202 poured between the inner steel pipe 203 and the outer steel pipe 201, wherein the central axes of the inner steel pipe 203 and the outer steel pipe 201 coincide. The concrete 202 can be concrete with ultra-high strength and other properties commonly used in the art.

[0033] In a specific implementation, please refer to Figure 2 As shown, the connection structure also includes an inner wedge block 9 and an outer wedge block 8. The positions and numbers of the inner wedge block 9 and the outer wedge block 8 correspond. The inner wedge block 9 is fixed on the outer surface of the prefabricated pier 2. When the prefabricated pier 2 is inserted into the sleeve 4, the inner wedge block 9 is correspondingly inserted into the gap between the two fixing blocks 6. The outer wedge block 8 is also fixedly placed in the space between the inner wedge block 9 and the inner wall of the sleeve 4, so that the prefabricated pier 2 is connected and fixed to the sleeve 4. The vertical lifting force of the pier can be decomposed into horizontal force by the slope between the inner and outer wedge blocks. Due to the existence of the horizontal force, vertical static friction will be generated between the outer wedge block and the inner wall of the sleeve to resist the vertical lifting force of the pier, thereby fixing the pier on the sleeve.

[0034] In a more specific embodiment, the width of the inner wedge block 9 along the circumference of the prefabricated pier 2 matches the gap between two adjacent fixing blocks 6 .

[0035] In a more specific embodiment, the outer wedge block 8 and the inner wedge block 9 have the same slope.

[0036] In a further specific embodiment, the slope of the outer wedge block 8 and the inner wedge block 9 is 5-15°.

[0037] For more specific implementations, please refer to Figures 2 to 6As shown, the connection structure also includes an annular cover plate 10, which has a middle through hole for the prefabricated pier 2 to pass through, and the end of the fixing block 6 is also provided with a reserved bolt hole 7. The annular cover plate 10 is also provided with a connecting through hole 12 corresponding to the position of the reserved bolt hole 7, and the connecting bolts 11 pass through the connecting through hole 12 and the reserved bolt hole 7 respectively, so that the annular cover plate 10 can be removably fixed to the opening position of the sleeve 4, and then the outer wedge block 8 is clamped, so that the prefabricated pier 2 is fixed to the connection structure without falling out or rotating.

[0038] In a further specific embodiment, the inner diameter of the annular cover plate 10 is larger than the outer diameter of the prefabricated pier 2 , and the outer diameter of the annular cover plate 10 is larger than the outer diameter of the sleeve 4 .

[0039] In a specific implementation manner, shear studs 5 are welded to the outer side of the sleeve 4 .

[0040] In a specific implementation, the open end of the sleeve 4 is flush with the upper surface of the base 1 and the lower surface of the cap beam 3 respectively.

[0041] The above embodiments may be implemented individually or in any combination of two or more.

[0042] The above implementation is described in more detail below in conjunction with specific examples.

[0043] Example 1

[0044] See also Figures 1 to 6 As shown, this embodiment proposes a replaceable high-strength prefabricated assembled pier, including a cap 1, a prefabricated pier column 2 arranged on the cap 1, and a cap beam 3 arranged on the prefabricated pier column 2, the upper and lower ends of the prefabricated pier column 2 are respectively fixedly connected to the connecting structure embedded in the cap 1 and the cap beam 3 to form a whole, the connecting structure includes a sleeve 4 embedded in the cap 1 or the cap beam 3 and open at one end, a plurality of fixing blocks 6 are arranged on the inner wall of the sleeve 4, and the inner side surfaces of all the fixing blocks 6 are together surrounded to form a cavity for the upper end or the lower end of the prefabricated pier column 2 to match and insert.

[0045] Please see again Figure 1 As shown, the prefabricated pier 2 is composed of an inner steel pipe 203, an outer steel pipe 201 sleeved outside the inner steel pipe 203, and concrete 202 poured between the inner steel pipe 203 and the outer steel pipe 201, wherein the central axes of the inner steel pipe 203 and the outer steel pipe 201 coincide with each other.

[0046] Please see again Figure 2As shown, the connection structure also includes an inner wedge block 9 and an outer wedge block 8. The positions and quantities of the inner wedge block 9 and the outer wedge block 8 correspond. The inner wedge block 9 is fixed on the outer surface of the prefabricated pier 2, and when the prefabricated pier 2 is inserted into the sleeve 4, the inner wedge block 9 is correspondingly inserted into the gap between the two fixing blocks 6. The outer wedge block 8 is also fixedly placed in the space between the inner wedge block 9 and the inner wall of the sleeve 4, so that the prefabricated pier 2 is connected and fixed to the sleeve 4. The width of the inner wedge block 9 along the circumference of the prefabricated pier 2 matches the gap between the two adjacent fixing blocks 6. The outer wedge block 8 has the same slope as the inner wedge block 9. Preferably, the slope of the outer wedge block 8 and the inner wedge block 9 is 5-15°.

[0047] Please see again Figures 2 to 6 As shown, the connection structure also includes an annular cover plate 10, which has a middle through hole for the prefabricated pier 2 to pass through, and the end of the fixing block 6 is also provided with a reserved bolt hole 7. The annular cover plate 10 is also provided with a connecting through hole 12 corresponding to the position of the reserved bolt hole 7, and the connecting bolts 11 pass through the connecting through hole 12 and the reserved bolt hole 7 respectively, so that the annular cover plate 10 can be removably fixed to the opening position of the sleeve 4, and then the outer wedge block 8 is clamped, so that the prefabricated pier 2 is fixed to the connection structure without falling out or rotating.

[0048] The inner diameter of the annular cover plate 10 is larger than the outer diameter of the prefabricated pier 2, and the outer diameter of the annular cover plate 10 is larger than the outer diameter of the sleeve 4. The outer side of the sleeve 4 is also welded with a shear nail 5 extending laterally into the pedestal 1 or the cap beam 3.

[0049] The opening ends of the sleeve 4 are flush with the upper surface of the base 1 and the lower surface of the cap beam 3 respectively.

[0050] The replaceable high-strength prefabricated assembled bridge pier construction method of this embodiment includes the following steps:

[0051] Step 1: Complete the prefabrication and maintenance of the prefabricated pier 2 and cap beam 3 in the factory.

[0052] Step 2: After the construction of the foundation 1 at the construction site is completed, the prefabricated components are transported to the site, and the prefabricated piers 2 are assembled. The lower ends of the prefabricated piers 2 are aligned and inserted into the sleeve 4 in the foundation 1, and then the outer wedge block 8 is inserted, and the annular cover plate 10 is covered. The connecting through holes 12 are aligned with the reserved bolt holes 7 and the connecting bolts 11 are tightened. After the construction of the two prefabricated piers 2 is completed, the cap beam 3 is assembled. The upper ends of the prefabricated piers 2 are aligned and inserted into the sleeve 4 in the cap beam 3, and then the outer wedge block 8 is inserted, and the annular cover plate 10 is covered. The connecting through holes 12 are aligned with the reserved bolt holes 7 and the connecting bolts 11 are tightened. After the construction is completed, an anti-corrosion material, such as epoxy resin, can be applied to the connection structure.

[0053] Step 3: When the pier is damaged under the action of accidental load or earthquake load, a pier 22 is prefabricated in the factory according to the original size and transported to the bridge site to replace the damaged pier.

[0054] In the present invention, the vertical lifting force of the pier column can be decomposed into horizontal force through the cooperation between the inner and outer wedge blocks. Due to the existence of the horizontal force, vertical static friction will be generated between the outer wedge block and the inner wall of the sleeve to resist the vertical lifting force of the pier column, thereby fixing the pier column on the sleeve. This mechanical connection can ensure the reliability of the pier column node, and can also dissipate energy by relying on the slight sliding between the components under the action of an earthquake, and can realize the rapid replacement of the pier column after it is damaged.

[0055] The replaceable high-strength prefabricated assembled bridge pier provided by the present invention has the advantages of:

[0056] (1) After the components are manufactured and processed in the factory, they are transported to the bridge site for assembly, which speeds up the construction progress, realizes rapid construction, and reduces the impact on the surrounding areas of the project.

[0057] (2) Bridge piers damaged after an earthquake can be quickly replaced and traffic restored in a timely manner. Good post-earthquake recovery performance is of great significance to the economic development of society.

[0058] (3) The structure is light and high-strength, the construction method is simple, the operation is convenient, the construction efficiency is high, and the structural durability can meet the requirements.

[0059] (4) From the perspective of long-term social development, it has good economic benefits.

[0060] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A replaceable high-strength prefabricated assembled bridge pier, characterized in that: It comprises a cap, a prefabricated pier arranged on the cap, and a cap beam arranged on the prefabricated pier, wherein the upper and lower ends of the prefabricated pier are respectively fixedly connected to the connection structure pre-buried in the cap and the cap beam to form a whole, wherein the connection structure comprises a sleeve pre-buried in the cap and the cap beam and open at one end, wherein a plurality of fixing blocks are arranged on the inner wall of the sleeve, and the inner side surfaces of all the fixing blocks are surrounded together to form a cavity for the upper end or the lower end of the prefabricated pier to be matched and inserted into; The prefabricated pier column is composed of an inner steel pipe, an outer steel pipe sleeved outside the inner steel pipe, and concrete poured between the inner steel pipe and the outer steel pipe, wherein the central axes of the inner steel pipe and the outer steel pipe coincide with each other; The connection structure further comprises an inner wedge block and an outer wedge block, the inner wedge block and the outer wedge block have corresponding positions and numbers, the inner wedge block is fixed on the outer surface of the prefabricated pier column, and when the prefabricated pier column is inserted into the sleeve, the inner wedge block is correspondingly inserted into the gap between the two fixed blocks, and the outer wedge block is also fixedly placed in the space between the inner wedge block and the inner wall of the sleeve, so that the prefabricated pier column is connected and fixed to the sleeve; The width of the inner wedge-shaped block along the circumference of the prefabricated pier matches the gap between two adjacent fixed blocks; The outer wedge-shaped block and the inner wedge-shaped block have the same slope; The slope of the outer wedge block and the inner wedge block is 5-15°; The connection structure further comprises an annular cover plate, which has a middle through hole for the prefabricated pier to pass through, and a reserved bolt hole is also provided at the end of the fixing block, and the annular cover plate is also provided with a connecting through hole corresponding to the position of the reserved bolt hole, and a connecting bolt passes through the connecting through hole and the reserved bolt hole respectively, so that the annular cover plate can be removably fixed to the opening position of the sleeve; The inner diameter of the annular cover plate is larger than the outer diameter of the prefabricated pier column, and the outer diameter of the annular cover plate is larger than the outer diameter of the sleeve.

2. The replaceable high-strength prefabricated assembled bridge pier according to claim 1, characterized in that: The outer side of the sleeve is also welded with shear nails.

3. The replaceable high-strength prefabricated assembled bridge pier according to claim 1, characterized in that: The opening end of the sleeve is flush with the upper surface of the pedestal and the lower surface of the cap beam respectively.

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