Quickly constructed anti-scouring structure of pier

Abstract

The utility model relates to the technical field of piers, and discloses a pier anti-scouring structure capable of being quickly constructed, a lower pier is made of ultra-high performance concrete, and a plurality of first reinforcing steel bars are arranged in the lower pier in series; the upper pier is made of common concrete, a plurality of second steel bars are stringed in the upper pier, and a plurality of grouting sleeves are arranged in the bottom of the upper pier; the first double-layer flange plate is arranged at the top end of the lower pier and provided with first steel bar holes used for penetrating of a plurality of first steel bars. The second double-layer flange plate is arranged at the bottom end of the upper pier, the second double-layer flange plate and the first double-layer flange plate are connected through a plurality of high-strength bolts, and the second double-layer flange plate is provided with second reinforcing steel bar holes allowing the first reinforcing steel bars to penetrate through; according to the ultra-high-performance concrete bridge pier, the effect of rapid construction can be achieved, the integrity of the structure can be effectively improved, and damage to the bridge pier connecting position caused by sudden change of material performance is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge piers, in particular to an anti-scouring structure of a bridge pier for rapid construction. Background Technique

[0002] In recent years, bridge diseases caused by pier scouring in bridges across rivers, lakes and seas have gradually increased, which have a great impact on the service life and safety of bridge piers. Ultra-high performance concrete, as a cement-based composite material with ultra-high strength, high toughness, high durability and good volume stability, also has extremely low permeability, high resistance to environmental medium erosion and good wear resistance, and can adapt to harsh water flow scouring environments.

[0003] If the vulnerable scouring parts of the bridge pier are protected and ordinary concrete is used for the rest of the non-scouring parts, not only the cost can be saved, but also the purpose of anti-scouring of the bridge pier can be achieved.

[0004] However, the performance differences between ultra-high performance concrete and ordinary concrete are relatively large, and interface peeling, cracks and pier failures caused by uneven material strength may occur at the interface. Content of the Utility Model

[0005] The purpose of the utility model is to provide an anti-scouring structure of a bridge pier for rapid construction, aiming to solve or improve at least one of the above technical problems.

[0006] To achieve the above purpose, the utility model provides the following solution: The utility model provides an anti-scouring structure of a bridge pier for rapid construction, including:

[0007] A lower bridge pier, the lower bridge pier is made of ultra-high performance concrete, and a number of first steel bars are strung in the lower bridge pier;

[0008] An upper bridge pier, the upper bridge pier is made of ordinary concrete, a number of second steel bars are strung in the upper bridge pier, a number of grouting sleeves are arranged at the bottom of the upper bridge pier, the number of second steel bars corresponds to the number of grouting sleeves one by one, and one end of the second steel bar is inserted into the grouting sleeve, the number of first steel bars corresponds to the number of grouting sleeves one by one, and one end of the first steel bar extends out from the top end of the lower bridge pier and is inserted into the grouting sleeve;

[0009] A first double-layer flange plate, the first double-layer flange plate is arranged at the top end of the lower bridge pier, and a first steel bar hole for a number of the first steel bars to penetrate is formed on the first double-layer flange plate;

[0010] A second double-layer flange plate, the second double-layer flange plate is arranged at the bottom end of the upper bridge pier, the second double-layer flange plate is connected with the first double-layer flange plate by a number of high-strength bolts, and a second steel bar hole for a number of the first steel bars to penetrate is formed on the second double-layer flange plate;

[0011] The middle layer is made of ultra-high performance concrete and is fixedly connected between the lower pier and the upper pier.

[0012] Optionally, the lower pier includes an ultra-high performance concrete outer shell and an ultra-high performance concrete layer filled inside the ultra-high performance concrete outer shell.

[0013] Optionally, the upper pier includes a normal concrete outer shell and a normal concrete layer filled inside the normal concrete outer shell.

[0014] Optionally, the first double-layer flange plate includes a first fixing plate, a first connecting column and a first mounting plate fixedly connected in sequence. A plurality of first reinforcing ribs are fixedly connected between the first fixing plate and the first connecting column. The first fixing plate is fixedly connected to the lower pier. A plurality of the first steel bar holes are formed in the first fixing plate, and a plurality of first bolt holes for assembling the high-strength bolts are formed in the first mounting plate.

[0015] Optionally, a first reinforcing shell is fixedly connected to the end face of the first fixing plate away from the first connecting column, and the first reinforcing shell extends into the lower pier.

[0016] Optionally, the length of the first reinforcing shell does not exceed one-third of the length of the lower pier.

[0017] Optionally, the second double-layer flange plate includes a second fixing plate, a second connecting column and a second mounting plate fixedly connected in sequence. A plurality of second reinforcing ribs are fixedly connected between the second fixing plate and the second connecting column. The second fixing plate is fixedly connected to the upper pier. A plurality of the second steel bar holes are formed in the second fixing plate, and a plurality of second bolt holes for assembling the high-strength bolts are formed in the second mounting plate.

[0018] Optionally, a second reinforcing shell is fixedly connected to the end face of the second fixing plate away from the second connecting column, and the second reinforcing shell extends into the upper pier.

[0019] Optionally, the length of the second reinforcing shell is the same as the length of the upper pier.

[0020] Optionally, it further includes a capping beam. Third steel bars are arranged in the capping beam. A plurality of connecting heads are integrally formed on the bottom surface of the capping beam, and grooves for inserting the connecting heads are formed at the top end of the upper pier.

[0021] The present utility model discloses the following technical effects:

[0022] By combining the lower pier made of ultra-high performance concrete with the upper pier made of ordinary concrete, the advantages of both can be fully utilized. Ultra-high performance concrete has excellent compressive strength and durability, while ordinary concrete is more cost-effective. This helps to reduce the overall cost while ensuring the scour resistance of the pier. The rational use of materials also meets the requirements of environmental protection and sustainable development, which is beneficial to the sustainable development of bridge engineering.

[0023] By connecting the first double-layer flange and the second double-layer flange, passing the first steel bar through the first steel bar hole and the second steel bar hole in sequence into the grouting sleeve, and using the intermediate layer of ultra-high performance concrete to cover the first double-layer flange and the second double-layer flange, not only can the effect of rapid construction be achieved, but also the strength difference between the upper and lower structures caused by the use of ultra-high performance concrete in the lower pier can be reduced, and the force can be effectively transmitted, thus effectively improving the integrity of the structure and avoiding the damage at the pier connection caused by the sudden change of material properties. Brief Description of the Drawings

[0024] The drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0026] Figure 2 It is a disassembled schematic diagram of the upper pier and the lower pier of the present utility model;

[0027] Figure 3 It is a schematic diagram of the structure of the lower pier of the present utility model;

[0028] Figure 4 It is a sectional view of the overall structure of the present utility model;

[0029] Figure 5 It is an assembly schematic diagram of the capping beam and the upper pier of the present utility model;

[0030] Figure 6 It is a partial sectional view of the capping beam of the present utility model.

[0031] In the figure: 1. Lower pier; 2. First steel bar; 3. Upper pier; 4. Second steel bar; 5. Grouting sleeve; 6. First double-layer flange; 6-1. First fixing plate; 6-2. First connecting column; 6-3. First mounting plate; 6-4. First reinforcing rib; 6-5. First steel bar hole; 6-6. First bolt hole; 6-7. First reinforcing shell; 7. Second double-layer flange; 7-1. Second fixing plate; 7-2. Second connecting column; 7-3. Second mounting plate; 7-4. Second reinforcing rib; 7-5. Second steel bar hole; 7-6. Second bolt hole; 7-7. Second reinforcing shell; 8. High-strength bolt; 9. Intermediate layer; 10. Capping beam; 11. Third steel bar; 12. Connector; 13. Groove. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0034] Referring to Figures 1-6 , the present invention provides a pier anti-scouring structure for rapid construction, including:

[0035] A lower pier 1, the lower pier 1 is made of ultra-high performance concrete, and several first steel bars 2 are strung in the lower pier 1;

[0036] An upper pier 3, the upper pier 3 is made of ordinary concrete, several second steel bars 4 are strung in the upper pier 3, several grouting sleeves 5 are arranged inside the bottom of the upper pier 3, several second steel bars 4 correspond to several grouting sleeves 5 one by one, and one end of the second steel bar 4 is inserted into the grouting sleeve 5, several first steel bars 2 correspond to several grouting sleeves 5 one by one, and one end of the first steel bar 2 extends out from the top end of the lower pier 1 and is inserted into the grouting sleeve 5;

[0037] A first double-layer flange 6, the first double-layer flange 6 is arranged at the top end of the lower pier 1, and a first steel bar hole 6-5 for several first steel bars 2 to penetrate is opened on the first double-layer flange 6;

[0038] A second double-layer flange 7, the second double-layer flange 7 is arranged at the bottom end of the upper pier 3, the second double-layer flange 7 is connected to the first double-layer flange 6 by several high-strength bolts 8, and a second steel bar hole 7-5 for several first steel bars 2 to penetrate is opened on the second double-layer flange 7;

[0039] The middle layer 9, which is made of ultra-high performance concrete, is fixedly connected between the lower pier 1 and the upper pier 3.

[0040] By combining the lower pier 1 made of ultra-high performance concrete with the upper pier 3 made of ordinary concrete, the advantages of both are fully utilized. Ultra-high performance concrete has excellent compressive strength and durability, while ordinary concrete is more cost-effective. This can reduce the overall cost while ensuring the scour resistance of the pier. Rational use of materials also meets the requirements of environmental protection and sustainable development, which is beneficial to the sustainable development of bridge engineering.

[0041] By connecting the first double-layer flange 6 and the second double-layer flange 7, and passing the first steel bar 2 through the first steel bar hole 6-5 and the second steel bar hole 7-5 into the grouting sleeve 5 in sequence, and using the middle layer made of ultra-high performance concrete to cover the first double-layer flange 6 and the second double-layer flange 7, not only can the effect of rapid construction be achieved, but also the strength difference between the upper and lower structures caused by the use of ultra-high performance concrete in the lower pier 1 can be reduced, and the force can be effectively transmitted, thereby effectively improving the integrity of the structure and avoiding the damage at the pier connection caused by the sudden change of material properties.

[0042] In a further optimized solution, the lower pier 1 includes an ultra-high performance concrete outer shell and an ultra-high performance concrete layer filled in the ultra-high performance concrete outer shell. The upper pier 3 includes an ordinary concrete outer shell and an ordinary concrete layer filled in the ordinary concrete outer shell.

[0043] The ultra-high performance concrete outer shell serves as the casting formwork for the ultra-high performance concrete layer, and the ordinary concrete outer shell serves as the casting formwork for the ordinary concrete layer. Both can be prefabricated in the factory, saving the time for on-site construction by workers and accelerating the construction progress to achieve the effect of rapid construction.

[0044] In a further optimized solution, the first double-layer flange 6 includes a first fixing plate 6-1, a first connecting column 6-2, and a first mounting plate 6-3 that are fixedly connected in sequence. A number of first reinforcing ribs 6-4 are fixedly connected between the first fixing plate 6-1 and the first connecting column 6-2. The first fixing plate 6-1 is fixedly connected to the lower pier 1. A number of first steel bar holes 6-5 are formed on the first fixing plate 6-1, and first bolt holes 6-6 for assembling a number of high-strength bolts 8 are formed on the first mounting plate 6-3.

[0045] The connection strength between the first fixing plate 6-1 and the first connecting column 6-2 is improved by the first reinforcing ribs 6-4, and the first bolt holes 6-6 can cooperate with the second bolt holes 7-6 on the second mounting plate 7-3 to achieve the rapid assembly of the first double-layer flange 6 and the second double-layer flange 7.

[0046] For a further optimized solution, a first reinforcing shell 6-7 is fixedly connected to the end face of the first fixing plate 6-1 away from the first connecting column 6-2, and the first reinforcing shell 6-7 extends into the lower pier 1.

[0047] The first reinforcing shell 6-7 improves the connection strength between the first fixing plate 6-1 and the lower pier 1.

[0048] For a further optimized solution, the length of the first reinforcing shell 6-7 does not exceed one-third of the length of the lower pier 1.

[0049] For a further optimized solution, the second double-layer flange 7 includes a second fixing plate 7-1, a second connecting column 7-2, and a second mounting plate 7-3 that are fixedly connected in sequence. A plurality of second reinforcing ribs 7-4 are fixedly connected between the second fixing plate 7-1 and the second connecting column 7-2. The second fixing plate 7-1 is fixedly connected to the upper pier 3. A plurality of second steel bar holes 7-5 are formed in the second fixing plate 7-1, and second bolt holes 7-6 for assembling a plurality of high-strength bolts 8 are formed in the second mounting plate 7-3.

[0050] For a further optimized solution, a second reinforcing shell 7-7 is fixedly connected to the end face of the second fixing plate 7-1 away from the second connecting column 7-2, and the second reinforcing shell 7-7 extends into the upper pier 3.

[0051] The second reinforcing shell 7-7 improves the connection strength between the second fixing plate 7-1 and the upper pier 3.

[0052] For a further optimized solution, the length of the second reinforcing shell 7-7 is the same as the length of the upper pier 3.

[0053] For a further optimized solution, it further includes a capping beam 10. Third steel bars 11 are arranged in the capping beam 10. A plurality of connecting heads 12 are integrally formed on the bottom surface of the capping beam 10. Grooves 13 for inserting the connecting heads 12 are formed at the top end of the upper pier 3.

[0054] Construction method:

[0055] Step 1: Prefabricate the ultra-high performance concrete shell and the ordinary concrete shell in the prefabrication yard. Among them, the first double-layer flange 6 and the ultra-high performance concrete shell are prefabricated together, and the ordinary concrete shell and the second double-layer flange 7 are prefabricated together. Hoist the ultra-high performance concrete shell to the designated position on-site for construction.

[0056] Step 2: Pour the ultra-high performance concrete layer inside the ultra-high performance concrete shell to form the lower pier 1. After curing is completed, hoist the ordinary concrete shell. The assembly method is to connect the first double-layer flange 6 and the second double-layer flange 7 with high-strength bolts 8, and insert the first steel bars 2 through the first steel bar holes 6-5 and the second steel bar holes 7-5 in sequence and insert them into the grouting sleeves arranged inside the ordinary concrete shell;

[0057] Step 3: After the assembly is completed, first, ultra-high performance concrete is cast at the connection between the first double-layer flange 6 and the second double-layer flange 7 to form the intermediate layer 9. Secondly, ordinary concrete is then poured into the ordinary concrete shell of the upper pier 3; during pouring, a socket groove 13 for the connector 12 on the capping beam 10 is reserved.

[0058] Step 4: Hoist and construct the precast capping beam 10, insert the connector 12 into the groove 13, and complete the construction.

[0059] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0060] The embodiments described above are only for describing the preferred mode of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A fast-constructed bridge pier anti-scour structure, characterized in that: include: A lower bridge pier (1), wherein the lower bridge pier (1) is made of ultra-high performance concrete, and a plurality of first steel bars (2) are arranged in series in the lower bridge pier (1); An upper bridge pier (3), wherein the upper bridge pier (3) is made of ordinary concrete, a plurality of second steel bars (4) are arranged in series in the upper bridge pier (3), a plurality of grouting sleeves (5) are arranged in the bottom of the upper bridge pier (3), a plurality of the second steel bars (4) correspond to a plurality of the grouting sleeves (5) one by one, and one end of the second steel bars (4) is inserted into the grouting sleeve (5), a plurality of the first steel bars (2) correspond to a plurality of the grouting sleeves (5) one by one, and one end of the first steel bars (2) extends from the top of the lower bridge pier (1) and is inserted into the grouting sleeve (5); A first double-layer flange (6), the first double-layer flange (6) being arranged at the top of the lower pier (1), the first double-layer flange (6) being provided with first steel bar holes (6-5) for a plurality of the first steel bars (2) to pass through; a second double-layer flange (7), the second double-layer flange (7) being arranged at the bottom end of the upper pier (3), the second double-layer flange (7) being connected to the first double-layer flange (6) via a plurality of high-strength bolts (8), and the second double-layer flange (7) being provided with second steel bar holes (7-5) for the plurality of the first steel bars (2) to pass through; An intermediate layer (9), the intermediate layer (9) being made of ultra-high performance concrete, and the intermediate layer (9) being fixedly connected between the lower bridge pier (1) and the upper bridge pier (3).

2. The fast-constructed bridge pier anti-scour structure according to claim 1, characterized in that: The lower bridge pier (1) comprises an ultra-high performance concrete shell and an ultra-high performance concrete layer filled in the ultra-high performance concrete shell.

3. The fast-constructed bridge pier anti-scour structure according to claim 1 is characterized by: The upper bridge pier (3) comprises a common concrete shell and a common concrete layer filled in the common concrete shell.

4. The fast-constructed bridge pier anti-scour structure according to claim 1, characterized in that: The first double-layer flange (6) comprises a first fixing plate (6-1), a first connecting column (6-2) and a first mounting plate (6-3) which are fixedly connected in sequence, a plurality of first reinforcing ribs (6-4) are fixedly connected between the first fixing plate (6-1) and the first connecting column (6-2), the first fixing plate (6-1) is fixedly connected to the lower pier (1), a plurality of first steel bar holes (6-5) are provided on the first fixing plate (6-1), and a first bolt hole (6-6) for assembling a plurality of high-strength bolts (8) is provided on the first mounting plate (6-3).

5. The anti-scour structure of a bridge pier for rapid construction according to claim 4 is characterized by: The end surface of the first fixing plate (6-1) away from the first connecting column (6-2) is fixedly connected to a first reinforcing shell (6-7), and the first reinforcing shell (6-7) extends into the lower bridge pier (1).

6. The fast-constructed bridge pier anti-scour structure according to claim 5, characterized in that: The length of the first reinforcement shell (6-7) does not exceed one third of the length of the lower pier (1).

7. The fast-constructed bridge pier anti-scour structure according to claim 1, characterized in that: The second double-layer flange (7) comprises a second fixing plate (7-1), a second connecting column (7-2) and a second mounting plate (7-3) which are fixedly connected in sequence, a plurality of second reinforcing ribs (7-4) are fixedly connected between the second fixing plate (7-1) and the second connecting column (7-2), the second fixing plate (7-1) is fixedly connected to the upper bridge pier (3), a plurality of second steel bar holes (7-5) are provided on the second fixing plate (7-1), and a second bolt hole (7-6) for assembling a plurality of high-strength bolts (8) is provided on the second mounting plate (7-3).

8. The anti-scour structure of a bridge pier for rapid construction according to claim 7, characterized in that: The end surface of the second fixing plate (7-1) away from the second connecting column (7-2) is fixedly connected to a second reinforcing shell (7-7), and the second reinforcing shell (7-7) extends into the upper bridge pier (3).

9. The fast-constructed bridge pier anti-scour structure according to claim 8, characterized in that: The length of the second reinforcement shell (7-7) is the same as that of the upper bridge pier (3).

10. The fast-constructed bridge pier anti-scour structure according to claim 1, characterized in that: It also includes a cap beam (10), wherein a third steel bar (11) is arranged inside the cap beam (10), a plurality of connectors (12) are integrally formed on the bottom surface of the cap beam (10), and a groove (13) for plugging into the connector (12) is provided at the top end of the upper pier (3).

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