Round reinforced concrete pier of viaduct and construction method

Abstract

The application relates to the field of building structures and provides a circular reinforced concrete pier of a viaduct, which comprises a support deck, a pier column pile, a steel bar support, a formwork set and a support beam; a foundation pit is formed on the ground, the pier column pile is poured into the foundation pit and extends upwards, the support deck is internally provided with deck steel bars, a deck foundation pit is excavated on the ground around the pier column pile, the deck steel bars are connected to the pier column pile and located in the deck foundation pit, the deck foundation pit is filled with concrete to form the support deck, the pier column comprises vase piers and bearing piers, the vase piers are located in the center of the support deck, the bearing piers are arranged in a plurality of groups and are dispersedly poured around the vase piers, and the bearing piers extend underground through the support deck. The application has the effect of stabilizing stress and improving load. In addition, a construction method of the reinforced concrete pier is provided.

Description

Technical Field

[0001] This application relates to the field of building structures, and in particular to a circular reinforced concrete pier for an elevated bridge and a construction method thereof. Background Technology

[0002] The superstructure of elevated bridges generally uses beam bridge structures such as box girders or T-beams, which are plain and monotonous in style. The piers of the substructure play an important role in beautifying the elevated bridge. The vase-shaped piers can not only bear the load of the superstructure, but also leave enough space for the ground road. Under the narrow, oppressive, and heavy superstructure of the elevated bridge, they appear more beautiful, smooth, and spacious, giving people a lively, light and refreshing feeling. Therefore, they have been widely used.

[0003] However, during the construction of ordinary viaduct piers, these round, arc-shaped or vase-shaped piers are difficult to provide stable construction. After construction, the inclined arc surface has low support, and the entire viaduct pier is prone to deformation when subjected to pressure or force, which affects the smoothness or slope of the bridge deck. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a circular reinforced concrete pier for elevated bridges and a construction method thereof.

[0005] The technical solution provided in this application for a circular reinforced concrete pier for an elevated bridge and its construction method is as follows: A circular reinforced concrete pier for an elevated bridge includes a support cap, pier piles, steel reinforcement supports, formwork assembly, and support beams. A foundation pit is excavated in the ground, and the pier piles are poured into the foundation pit and extend upwards. The support cap contains pier reinforcement bars. A foundation pit is excavated around the pier piles, and the pier reinforcement bars are distributed and connected to the pier piles and located in the foundation pit. Concrete fills the foundation pit to form the support cap. The column-shaped structure includes vase-shaped columns and load-bearing columns; the vase-shaped columns are located at the center of the support platform; several load-bearing columns are provided and are cast in a distributed manner around the vase-shaped columns, and the load-bearing columns extend into the ground through the support platform; several support beams are provided and connect adjacent load-bearing columns to each other. The steel reinforcement support includes a straight skeleton, a curved skeleton, and a beam skeleton. The straight skeleton is connected to the steel reinforcement of the support platform before the concrete is poured, and extends through the support platform upwards. The curved skeleton is divided into two parts: one part is arranged around the load-bearing pier, and the other part is arranged around the support beam where there is no load-bearing pier. The beam skeleton is installed on the vase-shaped pier and connects the straight skeleton and the curved skeleton to each other in a horizontal direction. The template assembly is attached to the steel reinforcement support and is connected. The template assembly includes a cap beam template, a curved template, and a straight template. The straight template is laid and connected around the straight frame. The curved template is laid and connected around the curved frame. Before the cap beam formwork is installed, the curved formwork and the straight formwork are attached to the steel reinforcement support in sections to form different sections of the forming space for the bridge pier to be poured. Concrete is poured into the forming space in sections. The cap beam formwork is laid on the top surface of the concrete after each layer is poured. After the concrete solidifies, the concrete pier of that section is formed. After the cap beam formwork is removed, the concrete is poured in layers until the concrete pier is formed.

[0006] By adopting the above technical solution, a stable building foundation is provided by extending the pier piles into the ground. The foundation pit is excavated, and the supporting platform is cast. The supporting platform increases the contact area between the pier piles and the ground, allowing for a more even distribution of force and improving the overall load-bearing capacity of the concrete pier. The pier piles are divided into decorative piers and load-bearing piers, further dispersing the force and increasing the load-bearing capacity. The steel reinforcement supports are divided into straight skeletons, curved skeletons, and beam skeletons at different heights and locations. The straight skeletons bear shear force and longitudinal force, while the curved and beam skeletons bear lateral shear force and lateral force. The force is then distributed to the load-bearing piers through the supporting beams, ensuring that every position of the concrete pier can obtain stable load-bearing capacity, and that the load is distributed to the load-bearing piers. The internal steel reinforcement supports are stable, making the bridge deck installation safer and more stable after molding. The formwork assemblies are connected to the corresponding steel reinforcement supports according to their different locations, allowing for concrete pouring. After the concrete solidifies, the steel reinforcement supports improve the stability of the concrete structure, enhance its load-bearing capacity, and extend the service life of the molded concrete pier.

[0007] Optionally, the load-bearing pier has internal load-bearing steel bars.

[0008] By adopting the above technical solution, the load-bearing steel bars installed inside the load-bearing pier can provide the longitudinal shear force and load-bearing capacity of the load-bearing pier.

[0009] Optionally, the supporting beam includes transverse reinforcing bars, rectangular stirrups, I-beams, and a supporting formwork; several transverse reinforcing bars are provided and connected to the load-bearing reinforcing bars before the load-bearing pier is cast; several rectangular stirrups are provided and the transverse reinforcing bars are interlocked at preset intervals; the I-beams are respectively inserted into the load-bearing reinforcing bars, and after the load-bearing pier is cast, the I-beams are located inside the load-bearing pier; the supporting formwork is laid on the surface of the transverse reinforcing bars, the I-beams, and the rectangular stirrups to form a rectangular casting space, and concrete is poured into the rectangular casting space and solidifies to form the supporting beam.

[0010] By adopting the above technical solution, the load-bearing piers are connected by I-beams to provide stable lateral support. Several transverse steel bars are then arranged around the I-beams, and rectangular stirrups are used to frame the transverse steel bars and the I-beams. The rectangular stirrups are covered by the support formwork to form a pouring space. Concrete is poured into the pouring space to support the beam. The I-beams form the main skeleton of the supporting beam, and the transverse steel bars and rectangular stirrups provide shear resistance and lateral load, allowing it to withstand greater loads.

[0011] Optionally, a reinforcing member is provided at one end of the support beam near the support platform. The reinforcing member is triangular in shape and is thicker at the end near the load-bearing pier than at the end away from the load-bearing pier.

[0012] By adopting the above technical solution, when the support beam is subjected to a large load, the reinforcing member can withstand the load and provide support for the support beam to bear a larger load.

[0013] Optionally, the straight skeleton extends through the support beam to the cap beam template, and when the straight skeleton passes through the support beam, a fastener is provided at the connection point with the support beam, and the fastener is connected to the straight skeleton.

[0014] By adopting the above technical solution, the straight skeleton can pass through the support beam without having to disconnect the straight skeleton when it is located on the support beam. The straight skeleton can be continued on the top of the support beam, which shortens the installation process and makes the installation of the straight skeleton more convenient. The fasteners can fix the position of the straight skeleton in the opening, reducing the impact of positional deviation on the load-bearing capacity of the subsequent concrete pier after it is formed.

[0015] Optionally, the vase-shaped pier is connected to each of the load-bearing piers by a supporting beam.

[0016] By adopting the above technical solution, the vase-shaped pier and the load-bearing pier are connected by a support beam, which makes it easier to distribute the force between the vase-shaped pier and each load-bearing pier. This results in a higher overall integration of the concrete pier after it is cast and can withstand a higher load.

[0017] Optionally, adjacent curve templates or straight line templates may be interlocked.

[0018] By adopting the above technical solution, the snap-fit ​​method can achieve rapid positioning, and in the event of tilting or shifting, it makes it difficult for the two templates to separate, thereby reducing the risk of falling.

[0019] Optionally, a fixing member is provided at the end of the beam frame away from the vase-shaped pier, and the curved template or the straight template is engaged with the fixing member.

[0020] By adopting the above technical solution, when the curved or straight formwork becomes loose and is about to fall, it will be fixed to the beam frame by the fixing components, thereby preventing the curved or straight formwork from falling from a height and hitting passers-by or other property, thus improving the safety during concrete pier pouring.

[0021] Optionally, the beam frame includes horizontal reinforcing bars and ring reinforcing bars; the horizontal reinforcing bars are connected to the load-bearing pier and extend outward, and the ring reinforcing bars are ring-shaped and connected to the curved frame and the straight frame on all paths during the encirclement process.

[0022] By adopting the above technical solution, the horizontal steel bars are used to disperse the force and increase the load, while the ring steel bars connect all the scattered curved and straight skeletons together, thereby improving the overall connection stability of the steel bar support.

[0023] A construction method for a reinforced concrete pier includes the following steps: The measurement environment is surveyed, the installation points are surveyed, and the dimensions, structure, and style of the template assembly are designed and calculated using the survey data; Foundation pit excavation: Based on the surveyed environment, drilling rigs are used to excavate foundation pits and pier foundation pits, and steel bars and steel frames for pier piles are pre-installed. Concrete is poured according to the type of pier pile. Reinforcing steel bars are pre-installed in the foundation pit, and concrete is poured to form a supporting foundation. Connect the support beam to the load-bearing pier column; Pour the pier piles to form them, and then cure them regularly until they are completely solidified. The formwork assembly starts from the supporting foundation, surrounds the steel reinforcement frame in sections to form the pouring space, and pours the concrete in sections. The pouring begins from the supporting pier. Once a section of concrete pier has been formed and solidified, the formwork is removed. After the formwork is removed, the next set of formwork is installed. This process is repeated until the top of the concrete pier is reached. Demolding and curing; Inspection and acceptance.

[0024] By adopting the above technical solutions and using the above construction methods, it is possible to stably cast and mold reinforced concrete piers.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The pier piles extend into the ground to provide a stable building foundation. The supporting pile caps increase the contact area between the pier piles and the ground, allowing the force to be transferred to the ground more evenly, thus increasing the overall load-bearing capacity of the concrete pier. The pier piles are divided into vase-shaped piers and load-bearing piers, which disperses the force and further increases the load-bearing capacity. The steel reinforcement supports are divided into straight skeletons, curved skeletons, and beam skeletons at different heights and locations. The straight skeletons bear shear force and longitudinal force, while the curved skeletons and beam skeletons bear lateral shear force and lateral force. The force is then distributed to the load-bearing piers through the supporting beams, ensuring that every position of the concrete pier can obtain stable load-bearing capacity, and that the load-bearing capacity can be distributed to the load-bearing piers. The internal steel reinforcement supports are stable, making the bridge deck installation safer and more stable after molding. The formwork groups are connected to the corresponding steel reinforcement supports according to the different locations, and then the concrete can be poured. After the concrete solidifies, the steel reinforcement supports are used to improve the stability of the concrete structure, enhance the load-bearing capacity of the concrete structure, and extend the service life of the molded concrete pier. 2. After connecting the load-bearing piers with I-beams, a stable lateral support is provided. Several transverse steel bars are then set around the I-beams, and rectangular stirrups are used to frame the transverse steel bars and the I-beams. The rectangular stirrups are covered by the support formwork to form a pouring space. The concrete is poured into the pouring space to support the beam. The I-beams form the main skeleton of the supporting beam, and the transverse steel bars and rectangular stirrups provide shear resistance and lateral load, which can withstand a larger load. 3. The straight skeleton can pass through the support beam without having to break it when it is on the support beam. The straight skeleton can be continued on top of the support beam, which shortens the installation process and makes the installation of the straight skeleton more convenient. The fasteners can fix the position of the straight skeleton in the opening, reducing the impact of positional displacement on the load-bearing capacity of the subsequent concrete pier after it is formed. 4. The vase-shaped piers and load-bearing piers are connected by supporting beams, which makes it easier to distribute the force between the vase-shaped piers and each load-bearing pier. This results in a higher overall integration of the concrete pier after casting and can withstand a higher load. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the first cross-sectional structure of a reinforced concrete pier in the forward view direction before concrete is poured, according to one embodiment of this application; Figure 2 This is a schematic diagram of the first cross-sectional structure of the curved skeleton in the top view direction in some embodiments of this application; Figure 3 These are schematic diagrams of the cross-sectional structure of the support beam in some embodiments of this application; Figure 4 This is a schematic diagram of the second cross-sectional structure of the reinforced concrete pier in the front view direction before the concrete is poured, as shown in some embodiments of this application; Figure 5 This is a partial three-dimensional structural schematic diagram of the support beam in some embodiments of this application; Figure 6 This is a partial top view of the support beam in some embodiments of this application; Figure 7 This is a schematic diagram of the second cross-sectional structure of the curved skeleton in the top view direction in some embodiments of this application; Figure 8 This is a three-dimensional structural diagram of the separation of the linear template in some embodiments of this application; Figure 9 This is a partial cross-sectional structural diagram of the straight template in the side view direction in some embodiments of this application; Figure 10 This is a schematic diagram of a third cross-sectional structure of the curved skeleton in the top view direction in some embodiments of this application; The markings in the attached diagram are as follows: 1. Supporting pile cap; 11. Pile cap reinforcement; 2. Pier pile; 21. Vase-shaped pier; 22. Load-bearing pier; 221. Load-bearing reinforcement; 3. Reinforcement bracket; 31. Straight skeleton; 32. Curved skeleton; 33. Beam skeleton; 331. Ring reinforcement; 34. Fixing element; 341. Fixing cylinder; 342. L-shaped rod; 4. Formwork assembly; 41. Cap beam formwork; 42. Curved formwork; 43. Straight formwork; 44. Clip groove; 45. Clip column; 5. Supporting beam; 51. Transverse reinforcement; 52. Rectangular stirrup; 53. I-beam; 54. Supporting formwork; 55. Reinforcing element; 56. Fastener; 561. U-shaped fastener; 562. Fixing rod; 57. Through-hole. Detailed Implementation

[0027] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand other advantages and effects of this application from the information disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0028] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0029] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0030] Furthermore, the terms "first" and "second" are used only to indicate an objective and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0032] The following is in conjunction with the appendix Figure 1 -Appendix Figure 10 This application will be described in further detail below.

[0033] This application discloses a circular reinforced concrete pier for an elevated bridge and a construction method thereof.

[0034] A circular reinforced concrete pier for an elevated bridge, reference Figure 1 As shown, it is applied to viaducts and is a circular stone pier. The circular stone pier can make the force more even and distributed when under pressure, thus increasing the load of the reinforced concrete pier.

[0035] The structure includes a supporting pier cap 1, pier piles 2, steel reinforcement supports 3, formwork assembly 4, and supporting beams 5. A foundation pit is excavated in the ground, and the pier piles 2 are poured into the foundation pit and extend upwards. The size and depth of the foundation pit need to be determined based on the surface soil quality, the maximum load required for the pre-constructed viaduct, wind resistance, earthquake resistance, etc., and are not limited here. After the pier piles 2 are set in the foundation pit, they will extend along the foundation pit to the ground surface. The specific extension length is determined based on the required load and earthquake and wind resistance level, and is not limited here.

[0036] The specific forming process of the pier pile 2 is as follows: a deep pit is excavated in the foundation pit using a drilling rig, and the steel bars and steel frames required for the forming of the pier pile 2 are pre-embedded in the deep pit. The steel bars and steel frames are then tied and placed in the deep pit. Precast concrete is then poured into the deep pit so that the concrete and steel bars bond together and solidify to form the pier pile 2.

[0037] The supporting foundation 1 includes the foundation reinforcement 11 and the foundation concrete. After the pier pile 2 is formed, the foundation pit is excavated in the ground around the pier pile 2. The depth and size of the foundation pit are determined according to the actual environment and the required load, etc., and are not limited here.

[0038] The foundation reinforcement 11 is distributed and connected to the pier pile 2 and located in the foundation pit. The foundation reinforcement 11 can be divided into horizontal reinforcement and vertical reinforcement, which are interconnected in a mesh in the foundation pit. After the foundation reinforcement 11 is tied, the foundation pit is filled with foundation concrete. After it solidifies, it supports the foundation 1 and forms, thereby providing part of the load-bearing capacity of the pier pile 2 and distributing the force to each pier pile 2.

[0039] Among them, the pier-like structures include vase-shaped piers 21 and load-bearing piers 22. The vase-shaped pier 21 is located at the center of the supporting platform 1. In order to provide central load-bearing, the vase-shaped pier 21 adopts a vase-shaped structure. The top can bear a large load-bearing area, which can fully support a larger area of ​​the viaduct deck, making the bridge deck installation more stable.

[0040] Several load-bearing piers 22 are provided and are cast in a distributed manner around the vase-shaped piers 21. The load-bearing piers 22 extend into the ground through the pier cap. The load-bearing piers 22 provide additional load-bearing capacity and partially bear the load after the bridge deck is distributed, thereby reducing the load on the vase-shaped piers 21 and increasing the overall maximum load capacity of the pier piles 2.

[0041] Several support beams 5 are provided, and adjacent load-bearing piers 22 are connected to each other. By connecting adjacent load-bearing piers 22 together using support beams 5, load distribution can be effectively provided, and other loads connected to support beams 5 can be distributed to load-bearing piers 22, thereby providing a more stable connection for the bridge deck.

[0042] The steel reinforcement support 3 is composed of several steel bars. The size and dimensions of the steel bars are determined by factors such as the required load and the height of the pier, and are not limited here. The several steel bars are divided according to their location and direction, including straight skeleton 31, curved skeleton 32 and beam skeleton 33.

[0043] Before the concrete of the foundation is poured, the straight skeleton 31 is tied to the foundation reinforcement 11 and extends through the foundation reinforcement 11 to the top of the foundation reinforcement 11, and several bars form a vertical reinforcement skeleton.

[0044] refer to Figure 2As shown, the curved skeleton 32 consists of several bent steel bars. The curved skeleton 32 can be divided into two parts according to the installation position. One part is set around the load-bearing pier 22, which provides the load and subsequent load after forming. However, since the load-bearing pier 22 cannot provide stable connection conditions in all directions, the other part is set around the support beam 5 where there is no load-bearing pier 22. Since the two ends of the support beam 5 are connected to two adjacent load-bearing piers 22, after the other part of the curved skeleton 32 is installed on the support beam 5, the support beam 5 will then transfer the load to the load-bearing pier 22 to ensure that all curved skeletons 32 can be stably connected.

[0045] The beam frame 33 is installed on the vase-shaped pier column 21, and the straight frame 31 and the curved frame 32 are connected to each other in the horizontal direction. The beam frame 33 is a horizontal transverse frame, which can be connected by several transversely arranged steel bars. The steel bars of adjacent transverse frames can be combined in multiple ways, that is, multiple transverse frame steel bars will form a rectangular surface. Then, stirrups are used to tie the adjacent transverse steel bars 51 together, thereby improving the load capacity and shear force of the transverse steel bars 51.

[0046] The template group 4 is connected to the steel reinforcement support 3. The template group 4 is used to enclose the connected steel reinforcement to form a space that can be poured. The template group 4 includes a cap beam template 41, a curved template 42 and a straight template 43.

[0047] The straight template 43 is laid and connected around the straight frame 31, enclosing the outer wall of the straight frame 31. The curved template 42 is laid and connected around the curved frame 32, enclosing the outer wall of the curved frame 32. The straight template 43 and the curved template 42 will have a joint end. After both the curved template 42 and the straight template 43 are laid, the cap beam template 41 is the capping template and is laid last.

[0048] Before the cap beam formwork 41 is installed, the curved formwork 42 and the straight formwork 43 are attached to the steel reinforcement support 3 in sections to form different sections of forming space for the pier pouring. Concrete is poured into each section of forming space, and the cap beam formwork 41 is laid on the top surface of the concrete after each layer of pouring. After the concrete solidifies, the concrete pier of that section is formed. After the cap beam formwork 41 is removed, the concrete is poured in layers until the concrete pier is formed. Specifically, the laying process is carried out in segments. For example, after the straight template 43 is surrounded by the straight frame 31 2m-5m up the foundation, concrete is poured and solidified to form a section of concrete pier. Then the straight template 43 is demolded, and the straight template 43 is built on the basis of the formed concrete pier. This process is repeated until it reaches the height of the connecting curved template 42. Then the curved template 42 is replaced and the concrete is filled until the entire concrete pier is formed.

[0049] Each concrete pier section can be sealed with a top formwork 41. After the section is formed, the top formwork 41 is removed, and construction continues on the foundation of the formed concrete pier section.

[0050] Specifically, the pier piles 2 extend into the ground to provide a stable building foundation. After excavating the foundation pit and casting the supporting platform 1, the supporting platform 1 increases the contact area between the pier piles 2 and the ground, allowing for a more even distribution of force and increasing the overall load-bearing capacity of the concrete pier. The pier piles 2 are divided into vase-shaped piers 21 and load-bearing piers 22, further dispersing the force and increasing the load capacity. The steel reinforcement supports 3 are divided into straight frames 31, curved frames 32, and beam frames 33 at different heights and locations. The straight frame 31 bears shear force and longitudinal force, while the curved frame 32 and beam frames 33 bear lateral shear force and lateral force. The force is distributed to the load-bearing pier 22 through the support beam 5, ensuring that each position of the concrete pier can obtain stable load-bearing capacity, and the load can be distributed to the load-bearing pier 22 for load-bearing. The internal steel reinforcement support 3 is stable, making the bridge deck installation safer and more stable after molding. The formwork group 4 is connected to the corresponding steel reinforcement support 3 according to the different setting positions of the straight formwork 43, curved formwork 42 and cap beam formwork 41, and then the concrete can be poured. After the concrete solidifies, the steel reinforcement support 3 is used to improve the stability of the concrete structure, enhance the load-bearing capacity of the concrete structure, and extend the service life of the molded concrete pier.

[0051] Depending on the requirements, template group 4 can create rectangular, circular, or other pouring spaces. After the concrete is poured and formed, the resulting concrete pier will have the following shape, such as... Figure 2 The image shows a circular pouring space.

[0052] In the vertical direction, several support beams 5 can be installed. The more beams installed, the greater the distributed load they can provide, and the more stable the connection structure. Figure 1 As shown, there are two support beams 5 in the vertical direction. The specific number of beams depends on the height and the maximum load required, and is not limited here.

[0053] Further reference Figure 2 As shown, the load-bearing pier 22 has load-bearing steel bars 221 inside. The load-bearing steel bars 221 inside the load-bearing pier 22 can provide longitudinal shear force and load-bearing capacity for the load-bearing pier 22.

[0054] Among them, the straight skeleton 31, the curved skeleton 32 and the beam skeleton 33 are all tied to the load-bearing steel bars 221 inside the load-bearing pier 22 before the pier 22 is poured, so that after the pier is poured, the straight skeleton 31, the curved skeleton 32 and the beam skeleton 33 are connected to the load-bearing pier 22, ensuring that the straight skeleton 31, the curved skeleton 32 and the beam skeleton 33 are installed more stably. If a support beam 5 is provided, the curved skeleton 32 and the beam skeleton 33 need to be tied to the internal steel bars before the support beam 5 is poured.

[0055] Furthermore, refer to Figure 3 As shown, the support beam 5 includes transverse steel bars 51, rectangular stirrups 52, I-beams 53, and support formwork 54; several transverse steel bars 51 are provided, and before the load-bearing pier column 22 is cast, they are connected to the load-bearing steel bars 221. The transverse steel bars 51 and the load-bearing steel bars 221 can be connected by binding wire.

[0056] A number of rectangular stirrups 52 are provided, and a number of transverse steel bars 51 are sleeved at preset intervals. The rectangular stirrups 52 sleeve the transverse steel bars 51 within them to prevent the transverse steel bars 51 from sagging under stress and to improve the transverse load-bearing capacity of the overall support beam 5. When the rectangular stirrups 52 are connected to the transverse steel bars 51, binding wire is used for binding connection.

[0057] I-beams 53 are inserted into the load-bearing reinforcing bars 221 respectively. After the load-bearing pier 22 is poured, the I-beams 53 are located inside the load-bearing pier 22. At the same time, the I-beams 53 penetrate the rectangular stirrups 52, and the I-beams 53 provide partial support for the transverse reinforcing bars 51.

[0058] The supporting formwork 54 is laid on the surface of the transverse reinforcing bars 51, rectangular stirrups 52, and I-beams 53 to form a long strip and a rectangular casting space. After the load-bearing pier column 22 is poured, concrete is poured into the rectangular casting space. After the concrete solidifies, it forms the supporting beam 5. Figure 3 In the middle A, the pouring direction is indicated. After the pouring is completed, the support template 54 is laid on the poured surface to seal the formwork.

[0059] Specifically, after the load-bearing pier column 22 is connected by the I-beam, it provides stable lateral support. Then, several transverse steel bars 51 are set around the I-beam 53, and rectangular stirrups 52 are used to frame the transverse steel bars 51 and the I-beam 53. The rectangular stirrups 52 are covered by the support formwork 54 to form a pouring space. The concrete is poured into the pouring space to support the beam 5. The I-beam 53 forms the main skeleton of the supporting beam 5, and the transverse steel bars 51 and rectangular stirrups 52 provide shear resistance and lateral load, which can withstand a larger load.

[0060] Among them, reference Figure 4As shown, a reinforcing member 55 is provided at one end of the support beam 5 near the support pier 1. The reinforcing member 55 is triangular in shape, and the end near the load-bearing pier 22 is thicker than the end away from the load-bearing pier 22. The reinforcing member 55 can be a triangular plate. The thicker end of the triangular plate can provide a greater load. Therefore, the thicker end of the triangular plate is connected to the load-bearing pier 22, and the thinner end is close to the middle of the support beam 5, which shortens the lever arm of the support beam 5 and supports the bottom of the support beam 5. When the support beam 5 is subjected to a large load, the triangular plate supports the support beam 5 to provide greater load support.

[0061] The straight frame 31 extends through the support beam 5 to the cap beam formwork 41. A through-hole 57 is opened on the support beam 5. The straight frame 31 passes through the through-hole 57 and extends upward. When pouring, the concrete will block the through-hole 57 to ensure the stability of the position of the straight frame 31.

[0062] The linear frame 31 can pass through the support beam 5 without having to disconnect it when it is located on the support beam 5. The linear frame 31 can be continued on top of the support beam 5, which shortens the installation process and makes the installation of the linear frame 31 more convenient.

[0063] In some embodiments, when the straight frame 31 passes through the support beam 5, a fastener 56 is provided at the connection point with the support beam 5 and passes through the I-beam 53. The fastener 56 is connected to the straight frame 31. The function of the fastener 56 is to securely connect the straight frame 31 and the I-beam 53, and to reduce the vertical displacement of the straight frame 31 due to gravity or other reasons when it passes through the support beam 5. The position of the straight frame 31 can be fixed by the fastener 56 to facilitate the installation of the straight frame 31.

[0064] The fastener 56 can take many forms, such as binding wire, bolt, U-shaped fastener 561, etc.

[0065] refer to Figure 5 As shown, taking a bolt as an example, a through-hole 57 and a threaded hole are opened on the support beam 5. The through-hole 57 and the threaded hole are connected, and the intersection of the two is perpendicular to each other. When the straight frame 31 passes through the through-hole 57, the bolt is screwed into the through-hole 57 through the threaded hole, so that the bolt abuts against the straight frame 31, thereby reducing the area of ​​the through-hole 57, so that the straight frame 31 can be stably locked and avoid shaking or deviation along the through-hole 57.

[0066] In other embodiments, reference is made to Figure 6 As shown, when the fastening adopts the U-shaped fastener 561, the U-shaped fastener 561 is an arc-shaped plate and two insert rods. The arc-shaped plate can contact the straight frame 31. The U-shaped fastener 561 is located in the through-hole 57, and the through-hole 57 has another opening at the end near the vase pier 21. This opening matches the two insert rods of the U-shaped fastener 561, so that the two insert rods of the U-shaped fastener 561 extend out of the opening at the end near the vase pier 21.

[0067] When the straight frame 31 passes through the through-hole 57 on the support beam 5, the two insert rods outside the opening are used as fulcrums to pull the U-shaped buckle 561, so that the arc plate presses the straight frame 31 against the wall of the through-hole 57. Fixing holes are opened on the insert rods, and fixing rods 562 can be installed in the fixing holes. When the straight frame 31 presses against the wall of the through-hole 57, the fixing rods 562 are inserted into the fixing holes to fix and lock the straight frame 31.

[0068] The straight frame 31 is composed of several steel bars. When each steel bar passes through a corresponding through hole 57, a fixing rod 562 of the same length as the I-beam 53 can be used to simultaneously pass through the fixing hole, so that all U-shaped buckles 561 can be locked. The fixing rod 562 does not need to be removed and can be directly embedded in the concrete pier after pouring.

[0069] If there is a slight deviation in position, cement blocks or metal blocks can be inserted into the through-hole 57 to adjust the position of the straight frame 31.

[0070] In summary, the above implementation method enables the fastener 56 to fix the position of the straight frame 31 within the through-hole 57, reducing the impact of positional displacement on the load-bearing capacity of the subsequent concrete pier after molding.

[0071] In some embodiments, reference Figure 7 As shown, the vase-shaped pier 21 is connected to each of the load-bearing piers 22 by a support beam 5. The vase-shaped pier 21 and the load-bearing piers 22 are further connected by the support beam 5, which makes it easier to distribute the force between the vase-shaped pier 21 and each load-bearing pier 22. This results in a higher overall integration of the concrete pier after it is cast and can withstand a higher load.

[0072] In some embodiments, connectors, such as binding wires, are provided at the connection points of the straight skeleton 31, curved skeleton 32, and beam skeleton 33. The binding wires are used to bind and connect any straight skeleton 31, curved skeleton 32, or beam skeleton 33 at the connection points, making the overall steel reinforcement support more stable.

[0073] In some embodiments, reference Figure 1 and Figure 8 As shown, adjacent curve templates 42 or straight templates 43 are interlocked. That is, when the adjacent templates are curve templates 42, curve templates 42 are interlocked with each other; when the adjacent templates are straight templates 43, straight templates 43 are interlocked with each other; and when the adjacent templates are both straight templates 43 and curve templates 42, straight templates 43 and curve templates 42 are interlocked with each other.

[0074] The snap-fit ​​method involves creating a snap-fit ​​groove 44 at the top of the straight template 43 or the curved template 42, and a snap-fit ​​post 45 at the bottom. The snap-fit ​​post 45 at the bottom snaps into the snap-fit ​​groove 44 at the top of another straight template 43 or the curved template 42. The snap-fit ​​post 45 and the snap-fit ​​groove 44 enable quick positioning. In the event of tilting or shifting, the snap-fit ​​post 45 of the straight template 43 or the curved template 42 can also hold the snap-fit ​​groove 44 of the other straight template 43 or the curved template 42 in place, making it difficult for the two templates to separate and reducing the risk of falling. Figure 8 Taking line template 43 as an example.

[0075] Further reference Figure 9 As shown, Figure 9 Taking the side view of the straight template 43 as an example, a fastener 34 is provided at the end of the beam frame 33 away from the vase-shaped pier column 21. The curved template 42 or the straight template 43 is snapped into the fastener 34. The fastener 34 is used to hold the curved template 42 or the straight template 43 in place, so that even if the curved template 42 or the straight template 43 is loose and about to fall, it will be hooked onto the beam frame 33 by the fastener 34, thereby preventing the curved template 42 or the straight template 43 from falling from a height and hitting passers-by or other property, thus improving the safety during the pouring of concrete piers.

[0076] The fastener 34 includes a fixed cylinder 341 and an L-shaped rod 342. The fixed cylinder 341 is fixedly installed at one end of the beam frame 33. The fixed installation method can be welding. The fixed cylinder 341 has an internal thread, and the L-shaped rod 342 has an external thread on its outer surface, so that the L-shaped rod 342 can be screwed into the fixed cylinder 341 for assembly.

[0077] A snap-fit ​​groove is provided at one end of the curved template 42 or the straight template 43 near the beam frame 33, and the length of the snap-fit ​​groove is the same as the bent end of the L-shaped rod 342. When the curved template 42 or the straight template 43 are interlocked, the L-shaped rod 342 is inserted into the snap-fit ​​groove and bends upward. Therefore, when the curved template 42 or the straight template 43 becomes loose and falls off after pouring, the L-shaped rod 342 is used to hold the snap-fit ​​groove, which prevents the curved template 42 or the straight template 43 from falling off and ensures the safety of maintenance after pouring.

[0078] In some embodiments, the beam frame 33 includes a ring-shaped steel bar 331. In addition to horizontal steel bars, the beam frame 33 may also include a ring-shaped steel bar 331. The horizontal steel bars are connected to the load-bearing pier column 22 and extend outward. The ring-shaped steel bar 331 is ring-shaped and is connected to the curved frame 32 and straight frame 31 on all paths during the encirclement. After the horizontal steel bars are tied to the load-bearing steel bars 221, they extend to the formwork group 4. The ring-shaped steel bars 331 are arranged at intervals in the vertical direction and are tied to the curved frame 32 and straight frame 31.

[0079] The horizontal steel bars disperse the force and increase the load, while the ring steel bars 331 connect all the scattered curved skeletons 32 and straight skeletons 31 together, thereby improving the overall connection stability of the steel bar support 3.

[0080] This application also provides a construction method for reinforced concrete piers, comprising the following steps: S100. Measure the environment, conduct a survey of the installation point, and use the survey data to design and calculate the size, structure, and style of the formwork group 4. Based on the structural characteristics and quality requirements of the reinforced concrete pier, and in conjunction with the construction operation procedures, analyze the load and stress of the structure during the construction stage, design the formwork group 4 in the reinforced concrete pier, and use a computer to calculate the stress and deformation data of the straight formwork 43, curved formwork 42, and the required pier piles 2 to meet the stress and deformation requirements of the structural components. Fabricate and assemble the steel reinforcement support 3, and inspect it to ensure it is qualified. S200, Foundation pit excavation: Based on the surveyed environment, use a drilling rig to excavate the foundation pit and the pier foundation pit, and pre-install the steel bars and steel frame for the pier pile 2. According to the type of pier pile 2, pour concrete. S210. Pre-install 11 reinforcing steel bars for the foundation pit and pour concrete to form the supporting foundation 1. S211. Before pouring concrete, connect the steel reinforcement bracket 3 to the foundation steel reinforcement 11, mainly connecting the straight skeleton 31. S300, transverse steel bars 51 and I-beams 53 within the tie-up support beam 5; 310. Binding the curved skeleton 32 and the beam skeleton 33; S400, pour the pier pile 2 to form the pier pile 2, and maintain it regularly until the pier pile 2 is completely solidified; S500 and formwork group 4 start from the support platform 1, enclose the steel reinforcement bracket 3 in sections to form a pouring space, and pour in sections; S510. Starting from the support platform 1, pouring begins. After a section of concrete pier is formed and solidified, the formwork is removed. After the formwork is removed, the next set of formwork group 4 is installed. This process is repeated until the top of the concrete pier is reached.

[0081] S511. Before pouring to the support beam 5, pour the support beam 5 first to form it, and then pour and form the next section of concrete pier. S512. When the casting reaches the curved skeleton 32, a support is provided outside the curved template 42. The support can be a top rod or a top column, which is placed under the curved template 42 to prevent the curved template 42 from falling due to gravity.

[0082] S600, demolding and maintenance.

[0083] S700, testing and acceptance.

[0084] The above construction method can be used to create stable cast-in-place reinforced concrete piers.

[0085] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A circular reinforced concrete pier for an elevated bridge, characterized in that, It includes a support platform (1), pier piles (2), steel reinforcement brackets (3), formwork assembly (4), and support beams (5); a foundation pit is opened in the ground, the pier piles (2) are poured into the foundation pit and extend upward; the support platform (1) contains a platform reinforcement (11), the platform foundation pit is excavated around the pier piles (2), the platform reinforcement (11) is distributed and connected to the pier piles (2) and located in the platform foundation pit, and concrete is filled into the platform foundation pit to form the support platform (1); The pier piles include vase-shaped piers (21) and load-bearing piers (22); the vase-shaped piers (21) are located at the center of the supporting platform (1); several load-bearing piers (22) are provided and are cast in a distributed manner around the vase-shaped piers (21), and the load-bearing piers (22) extend underground through the supporting platform (1); several supporting beams (5) are provided and connect adjacent load-bearing piers (22) to each other; The steel reinforcement support (3) includes a straight skeleton (31), a curved skeleton (32), and a beam skeleton (33); the straight skeleton (31) is connected to the foundation steel reinforcement (11) before the concrete is poured on the support platform (1), and extends through the support platform (1) to the top of the support platform (1); the curved skeleton (32) is divided into two parts, one part is set around the load-bearing pier (22), and the other part is set around the support beam (5) where the load-bearing pier (22) is not set; the beam skeleton (33) is installed on the vase pier (21), and the straight skeleton (31) and the curved skeleton (32) are connected to each other in the horizontal direction. The template group (4) is attached to the steel reinforcement support (3) and the template group (4) includes a cap beam template (41), a curved template (42) and a straight template (43); the straight template (43) is laid and connected around the straight skeleton (31); the curved template (42) is laid and connected around the curved skeleton (32); Before the cap beam template (41) is installed, the curved template (42) and the straight template (43) are attached to the steel reinforcement support (3) in sections to form different sections of the forming space for the pier pouring. The concrete is poured into the forming space in sections. The cap beam template (41) is laid on the top surface of the concrete after each layer is poured. After the concrete solidifies, the concrete pier of that section is formed. After the cap beam template (41) is removed, the concrete is poured in layers until the concrete pier is formed.

2. A circular reinforced concrete pier for an elevated bridge according to claim 1, characterized in that, The load-bearing pier (22) has load-bearing steel bars (221) inside.

3. A circular reinforced concrete pier for an elevated bridge according to claim 2, characterized in that, The supporting beam (5) includes transverse steel bars (51), rectangular stirrups (52), I-beams (53), and a supporting template (54). Several transverse steel bars (51) are provided and are connected to the load-bearing steel bars (221) before the load-bearing pier (22) is cast. Several rectangular stirrups (52) are provided and are connected to several transverse steel bars (51) at preset intervals. The I-beams (53) are inserted into the load-bearing steel bars (221) respectively. After the load-bearing pier (22) is cast, the I-beams (53) are located inside the load-bearing pier (22). The supporting template (54) is laid on the surface of the transverse steel bars (51), the I-beams (53), and the rectangular stirrups (52) to form a rectangular casting space. Concrete is poured into the rectangular casting space and solidifies to form the supporting beam (5).

4. A circular reinforced concrete pier for an elevated bridge according to claim 2, characterized in that, The supporting beam (5) is provided with a reinforcing member (55) at one end near the supporting platform (1). The reinforcing member (55) is triangular in shape, and the end near the load-bearing pier (22) is thicker than the end away from the load-bearing pier (22).

5. A circular reinforced concrete pier for an elevated bridge according to claim 2, characterized in that, The straight skeleton (31) extends through the support beam (5) to the cover beam template (41), and when the straight skeleton (31) passes through the support beam (5), a fastener (56) is provided at the connection with the support beam (5), and the fastener (56) is connected to the straight skeleton (31).

6. A circular reinforced concrete pier for an elevated bridge according to claim 1, characterized in that, Each of the vase-shaped piers (21) and each of the load-bearing piers (22) is connected by a supporting beam (5).

7. A circular reinforced concrete pier for an elevated bridge according to claim 1, characterized in that, The adjacent curve templates (42) or straight templates (43) are interlocked.

8. A circular reinforced concrete pier for an elevated bridge according to claim 7, characterized in that, The beam frame (33) is provided with a fastener (34) at the end away from the vase pier (21), and the curved template (42) or the straight template (43) is snapped into the fastener (34).

9. A circular reinforced concrete pier for an elevated bridge according to claim 1, characterized in that, The beam frame (33) includes horizontal steel bars and ring steel bars (331); the horizontal steel bars are connected to the load-bearing pier (22) and extend outward; the ring steel bars (331) are ring-shaped and are connected to the curved frame (32) and the straight frame (31) on all paths during the encirclement process.

10. A construction method for a reinforced concrete pier, characterized in that, The method for constructing the circular reinforced concrete pier for the viaduct as described in claim 1 includes the following steps: The measurement environment was surveyed, the installation points were surveyed, and the dimensions, structure and style of the template group (4) were designed and calculated using the survey data; The foundation pit is excavated. Based on the surveyed environment, the foundation pit and the foundation pit are excavated using a drilling rig. The steel bars and steel frame of the pier pile (2) are pre-set. According to the type of pier pile (2), concrete is poured. The foundation pit is pre-stressed with foundation reinforcement (11), and concrete is poured to form a supporting foundation (1). Connect the support beam (5) to the load-bearing pier (22); Pour the pier pile (2) to form the pier pile (2), and maintain it regularly until the pier pile (2) is completely solidified; The formwork group (4) starts from the supporting pile cap (1), surrounds the steel reinforcement support (3) in sections to form a pouring space, and pours in sections; The pouring begins from the support platform (1). After a section of concrete pier is formed and solidified, the formwork is removed. After the formwork is removed, the next set of formwork (4) is installed. This process is repeated until the top of the concrete pier is reached. Demolding and curing; Inspection and acceptance.

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