Mortise and tenon type prefabricated pier and construction method thereof

Abstract

The invention relates to the technical field of bridge engineering, and provides a tenon-and-mortise type prefabricated pier and a construction method thereof.The tenon-and-mortise type prefabricated pier comprises a prefabricated pier column assembly which comprises a plurality of first prefabricated pier columns and a plurality of second prefabricated pier columns, and the first prefabricated pier columns and the second prefabricated pier columns are sequentially and alternately arranged in the vertical direction; the first prefabricated pier column and the adjacent second prefabricated pier column form a pier column unit, each pier column unit is internally provided with a through containing channel, one end of each containing channel is located on one side of the first prefabricated pier column in the horizontal direction, and the other end of each containing channel is located on the other side of the first prefabricated pier column in the horizontal direction. The other end of the containing channel is located on the other side of the second prefabricated pier column in the horizontal direction, an included angle is formed between the extending direction of the containing channel and the vertical direction, and the containing channel is used for containing a prestressed part; the anchorage devices are arranged at the two ends of the containing channel. According to the embodiment of the invention, the assembly efficiency of splicing the pier column through the prestressed part can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge engineering, and in particular to a mortise and tenon type prefabricated assembled bridge pier and a construction method thereof. Background Art

[0002] In bridge construction, piers are critical load-bearing structures, and their construction quality and efficiency directly impact the overall performance and construction cycle of the bridge. Traditional cast-in-place pier construction methods require extensive on-site work, involving multiple steps such as formwork erection, rebar tying, concrete pouring, and maintenance. This results in a long construction cycle that cannot meet construction requirements. In recent years, with the continuous improvement of the standardized design of prefabricated components and the continuous innovation of construction technology and equipment, the application of prefabricated bridge piers in domestic bridge construction has gradually increased. When the pier columns of prefabricated bridge piers are tall, they need to be prepared by splicing multiple prefabricated pier columns. The following techniques are generally used for splicing the pier columns: the first is the grouting sleeve connection, which is to embed grouting sleeves at the upper and lower ends of the prefabricated pier columns. The connection between the pier columns is achieved by inserting steel bars into the sleeves and pouring cement slurry or other grouting materials; the second is the prestressed connection, which is to install prestressed bars in the pier columns and apply prestress using the post-tensioning method to create a tight connection between the pier columns. These splicing technologies have some drawbacks in practical application. For example, because the existing steel bars are set in a vertical direction, one end of the steel bar is located at the bottom of the pier, making it difficult to tension the steel bars at both ends, which reduces the assembly efficiency of the steel bars. Summary of the Invention

[0003] The problem solved by the present invention is how to improve the efficiency of splicing pier columns through prestressed parts.

[0004] In order to solve the above problems, the present invention provides a mortise and tenon type prefabricated assembled bridge pier and a construction method thereof.

[0005] In a first aspect, the present invention provides a mortise and tenon type prefabricated assembled bridge pier, comprising: a prefabricated pier column assembly, comprising a plurality of first prefabricated pier columns and a plurality of second prefabricated pier columns, the plurality of first prefabricated pier columns and the plurality of second prefabricated pier columns being alternately arranged in sequence along a vertical direction, the first prefabricated pier columns and the adjacent second prefabricated pier columns forming a pier column unit, each of the pier column units having a penetrating accommodating channel, one end of the accommodating channel being located on one side of the first prefabricated pier column in the horizontal direction, the other end of the accommodating channel being located on the other side of the second prefabricated pier column in the horizontal direction, the extension direction of the accommodating channel forming an angle with the vertical direction, the accommodating channel being used to accommodate a prestressed member; anchored at both ends of the accommodating channel, the two ends of the prestressed member are respectively connected to the anchor and fixed by the anchor.

[0006] Optionally, the first prefabricated pier and the second prefabricated pier both have a first side and a second side arranged opposite to each other in the horizontal direction, and the accommodating channel includes: a plurality of first pipes, which are arranged in parallel and spaced apart in the vertical direction, one end of the first pipe is located on the first side of the first prefabricated pier, and the other end of the first pipe is located on the second side of the second prefabricated pier; a plurality of second pipes, which are arranged in parallel and spaced apart in the vertical direction, one end of the second pipe is located on the second side of the first prefabricated pier, and the other end of the second pipe is located on the first side of the second prefabricated pier, and the first pipe and the second pipe at both ends of which are located at the same height are symmetrically arranged along the center line of the pier unit in the vertical direction.

[0007] Optionally, one of a raised portion and a recessed portion is provided at one end of the first prefabricated pier close to the second prefabricated pier, and the other of a raised portion and a recessed portion is provided at one end of the second prefabricated pier close to the first prefabricated pier, and the raised portion is inserted into the recessed portion.

[0008] Optionally, the cross-section of the protrusion in the vertical direction is trapezoidal.

[0009] Optionally, a first reinforcement member is provided in the first prefabricated pier, and the first reinforcement member extends along the edge of the first prefabricated pier; a second reinforcement member is provided in the second prefabricated pier, and the second reinforcement member extends along the edge of the second prefabricated pier.

[0010] Optionally, an included angle formed by the accommodating channel and the oblique side of the protrusion is between 70° and 90°.

[0011] Optionally, an epoxy resin layer is provided on the surfaces of the protruding portion and the recessed portion.

[0012] Optionally, the prestressed member comprises a steel rod or a steel bar.

[0013] Optionally, a filling piece is provided in the accommodating channel, and the filling piece is used to fill the gap between the prestressed member and the accommodating channel.

[0014] In a second aspect, the present invention further provides a construction method for a prefabricated assembled bridge pier, comprising: Prefabricating a plurality of first prefabricated pier columns and a plurality of second prefabricated pier columns, and pre-assembling the plurality of first prefabricated pier columns and the plurality of second prefabricated pier columns; Applying epoxy resin glue between a first prefabricated pier and an adjacent second prefabricated pier, and nesting and splicing a plurality of first prefabricated piers and a plurality of second prefabricated piers with mortise and tenon joints to form a prefabricated pier assembly; Splicing the lower end of the prefabricated pier column assembly with the receiving platform; Installing prestressed members on the plurality of first prefabricated piers and the plurality of second prefabricated piers and completing tensioning; Grouting is performed on the receiving channel.

[0015] The beneficial effects of the mortise and tenon type prefabricated assembled bridge pier and the construction method thereof of the present invention are: By setting the above structure, the prefabricated pier column assembly is composed of multiple first prefabricated pier columns and multiple second prefabricated pier columns arranged alternately in the vertical direction, so that multiple first prefabricated pier columns and multiple second prefabricated pier columns can be prefabricated in advance in the factory, without the need for complex casting operations on site, which greatly reduces the preparation time and process of on-site construction. At the same time, a penetrating accommodating channel is provided in the pier column unit, and the extension direction of the accommodating channel has an angle with the vertical direction, so that the prestressed parts accommodated therein are in an inclined state. Since one end of the accommodating channel is located on one side of the horizontal direction of the first prefabricated pier column, and the other end is located on the other side of the horizontal direction of the second prefabricated pier column, and the extension direction has an angle with the vertical direction, it is convenient to wear the prestressed parts, which reduces the difficulty of installing the prestressed parts. When prestress is applied to the prestressed parts, the direction of action of the prestress can be made The prestressed parts are nearly perpendicular to the splicing interface between the first prefabricated pier and the second prefabricated pier. According to the principles of mechanics, when the direction of the external force is perpendicular to the force-bearing surface, the force transmission efficiency is the highest, so it can act on the force-bearing surface to the greatest extent. Since the prestressed part is nearly perpendicular to the splicing interface, the pressure applied by the prestressed part can act more directly on the splicing interface, thereby improving the tensioning efficiency of the prestressed parts, effectively reducing the dispersion and loss of force, thereby improving the stability and bearing capacity of the entire pier structure, and using anchors to fix the prestressed parts to prevent the prestressed parts from falling off, thereby ensuring the tightness and integrity of the connection between the piers. In summary, this solution is used to speed up the connection speed between multiple first prefabricated piers and multiple second prefabricated piers, thereby significantly improving the assembly efficiency between multiple first prefabricated piers and multiple second prefabricated piers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a mortise and tenon type prefabricated assembled bridge pier provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a first prefabricated pier provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a second prefabricated pier provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a mortise and tenon type prefabricated assembled bridge pier and its construction method provided in an embodiment of the present invention; Figure 5 A schematic flow chart of a construction method provided in an embodiment of the present invention.

[0017] Description of reference numerals: Prefabricated pier assembly 10, first prefabricated pier 11, second prefabricated pier 12, raised portion 13, recessed portion 14, first reinforcement 15, second reinforcement 16, Accommodating channel 20, first pipe 21, second pipe 22, Prestressed parts 30, Anchor 40, Receiver 50, Horizontal direction Y, vertical direction Z. DETAILED DESCRIPTION

[0018] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0019] The Y-axis in the drawings represents left-right positioning, with the positive direction of the Y-axis representing the left side and the negative direction of the Y-axis representing the right side. The Z-axis in the drawings represents the vertical direction, that is, up-down positioning, with the positive direction of the Z-axis representing the top and the negative direction of the Z-axis representing the bottom. It should also be noted that the aforementioned Y-axis and Z-axis are merely for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0020] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0021] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0022] like Figures 1 to 5As shown, the present invention provides a mortise and tenon type prefabricated assembled bridge pier and its construction method, which include: a prefabricated pier column assembly 10, including a plurality of first prefabricated pier columns 11 and a plurality of second prefabricated pier columns 12, the plurality of first prefabricated pier columns 11 and the plurality of second prefabricated pier columns 12 are alternately arranged in sequence along the vertical direction, the first prefabricated pier columns 11 and the adjacent second prefabricated pier columns 12 form a pier column unit, each pier column unit has a accommodating channel 20 arranged therein, one end of the accommodating channel 20 is located on one side of the first prefabricated pier column 11 in the horizontal direction, and the other end of the accommodating channel 20 is located on the other side of the second prefabricated pier column 12 in the horizontal direction, the extension direction of the accommodating channel 20 has an angle with the vertical direction, and the accommodating channel 20 is used to accommodate a prestressed component 30; an anchor 40, anchored at both ends of the accommodating channel 20, the two ends of the prestressed component 30 are respectively connected to the anchor 40 and fixed by the anchor 40.

[0023] In this embodiment, by setting the above structure, the prefabricated pier column assembly 10 is composed of a plurality of first prefabricated pier columns 11 and a plurality of second prefabricated pier columns 12 arranged alternately in sequence along the vertical direction, so that the plurality of first prefabricated pier columns 11 and the plurality of second prefabricated pier columns 12 can be prefabricated in advance in the factory, without the need for on-site casting operations, which greatly reduces the preparation time and process of on-site construction. At the same time, each adjacent pair of first prefabricated pier columns 11 and second prefabricated pier columns 12 (that is, within a pier column unit) is provided with a penetrating accommodating channel 20, and each pair of first prefabricated pier columns 11 and second prefabricated pier columns 12 are connected by a prestressed member 30 (such as a steel bar) penetrating the accommodating channel 20; specifically, the extension direction of the accommodating channel 20 has an angle with the vertical direction, so that the prestressed members 30 accommodated therein are The force piece 30 is in an inclined state, and one end of the accommodating channel 20 is located on one side of the first prefabricated pier 11 in the horizontal direction, and the other end is located on the other side of the second prefabricated pier 12 in the horizontal direction, that is, the two ends of the accommodating channel 20 pass through the peripheral side walls of the first prefabricated pier 11 and the second prefabricated pier 12 respectively. This not only facilitates the insertion of the prestressed piece 30 and reduces the difficulty of installing the prestressed piece 30, but also facilitates the tensioning of the prestressed piece 30 from both ends of the prestressed piece 30. Therefore, the connection speed between the adjacent first prefabricated pier 11 and the second prefabricated pier 12 can be accelerated; and the prestressed piece 30 is fixed by the anchor 40 to prevent the prestressed piece 30 from falling off, thereby ensuring the tightness and integrity of the connection between the piers. In this embodiment, the anchor 40 is threadedly connected to the steel bar.

[0024] In this embodiment, the first prefabricated pier 11 in the pier unit is located above the second prefabricated pier 12 .

[0025] Optionally, the first prefabricated pier 11 and the second prefabricated pier 12 both have a first side and a second side arranged opposite to each other in the horizontal direction, and the accommodating channel 20 includes: a plurality of first pipes 21, which are arranged in parallel and spaced apart in the vertical direction, with one end of the first pipe 21 located on the first side of the first prefabricated pier 11, and the other end of the first pipe 21 located on the second side of the second prefabricated pier 12; a plurality of second pipes 22, which are arranged in parallel and spaced apart in the vertical direction, with one end of the second pipe 22 located on the second side of the first prefabricated pier 11, and the other end of the second pipe 22 located on the first side of the second prefabricated pier 12, and the plurality of first pipes 21 and the plurality of second pipes 22 are symmetrically arranged along the center line of the pier unit in the vertical direction.

[0026] Through the above arrangement, the pipeline laying requirements in two opposite horizontal directions can be met at the same time, and the overall structural strength is also improved.

[0027] In this embodiment, corresponding types of anchors 40 may be provided for different prestressing application methods, such as clip-type anchors 40 or screw-type anchors 40 .

[0028] At the same time, an anti-corrosion coating may be provided inside the accommodating channel 20 to enhance the protection of the pipeline to the prestressed component 30 and improve the durability of the prestressed component 30 .

[0029] Optionally, one of the raised portion 13 and the recessed portion 14 is provided at one end of the first prefabricated pier 11 close to the second prefabricated pier 12, and the other of the raised portion 13 and the recessed portion 14 is provided at one end of the second prefabricated pier 12 close to the first prefabricated pier 11, and the raised portion 13 is inserted into the recessed portion 14.

[0030] By setting up the above structure, during the assembly process, the raised portion 13 can be used as a guide structure and directly inserted into the corresponding recessed portion 14, so that the first precast pier 11 and the second precast pier 12 can be initially aligned without adjustment, thereby achieving rapid and accurate positioning of the first precast pier 11 and the second precast pier 12, effectively reducing the difficulty in aligning the accommodating channel 20 due to manual positioning deviation, greatly improving the splicing efficiency of the first precast pier 11 and the second precast pier 12, and saving time for the subsequent installation of the prestressed member 30. Secondly, the plug-in fit of the raised portion 13 and the recessed portion 14 can also enhance the overall stress-bearing performance of the splicing interface. Since the plug-in structure causes the first precast pier 11 and the second precast pier 12 to form mutual constraints in the horizontal direction, it can effectively resist horizontal loads, reduce the relative displacement between the first precast pier 11 and the second precast pier 12, and improve the bearing capacity and deformation resistance of the pier structure. In addition, the plug-in fit of the raised portion 13 and the recessed portion 14 can also improve the sealing performance of the joint interface between the first prefabricated pier column 11 and the second prefabricated pier column 12, thereby better ensuring the durability of the bridge pier. In this embodiment, a recessed portion 14 is provided at one end of the first prefabricated column 11 close to the second prefabricated column 12 , and a raised portion 13 is provided at one end of the second prefabricated column 12 close to the first prefabricated column 11 .

[0031] Optionally, the cross section of the protrusion 13 in the vertical direction is trapezoidal.

[0032] By setting up the above structure, the trapezoidal bevel can play a guiding role in the process of protrusion 13 being inserted into recessed portion 14. Even if there is a slight deviation in the initial alignment of the first prefabricated pier 11 and the second prefabricated pier 12, the bevel of the protrusion 13 can contact the inner wall of the recessed portion 14 and generate lateral force, gradually correcting the position of the piers and allowing the protrusion 13 to slide smoothly into the recessed portion 14, thereby improving the accuracy and efficiency of the installation of the two. In addition, the two bevels of the trapezoid can more evenly transfer horizontal loads to the corresponding contact surface of the recessed portion 14, thereby avoiding stress concentration in local areas and enhancing the shear resistance and overall stability of the splicing part. In other embodiments, the cross-section of the protrusion 13 in the vertical direction may also be configured as a square or rectangular structure, and the specific configuration should be selected according to the use environment of the device.

[0033] Optionally, a first reinforcement 15 is provided in the first prefabricated pier 11 and extends along the edge of the first prefabricated pier 11 , and a second reinforcement 16 is provided in the second prefabricated pier 12 and extends along the edge of the second prefabricated pier 12 .

[0034] By providing the above-described structure, the first reinforcement member 15 extends along the edge of the first precast pier 11, thereby enhancing the structural strength of this area and effectively resisting the local pressure generated by the insertion of the protrusion 13 or the recess 14 during splicing, thereby preventing problems such as cracking and breakage along the edge. Similarly, the second reinforcement member 16 extends along the edge of the second precast pier 12, thereby enhancing the structural strength of this area and effectively resisting the local pressure generated by the insertion of the protrusion 13 or the recess 14 during splicing, thereby preventing problems such as cracking and breakage along the edge and preventing structural damage caused by insufficient local strength. Furthermore, the first and second reinforcement members 15, 16 extending along the edge can form a common stress point with other prestressed members 30 within the pier, more evenly transferring local stress to the overall structure of the pier, avoiding stress concentration at a single weak point. This improves local strength while enhancing the overall load-bearing capacity and deformation resistance of the precast pier, further extending the service life of the bridge.

[0035] In this embodiment, both the first and second reinforcement members 15, 16 are steel bars. Steel bars, as a reinforcing material in building structures, possess excellent tensile, compressive, and shear properties. The first and second reinforcement members 15, 16 are tightly bonded to the concrete within the pier, forming a synergistic load-bearing structure, thereby enhancing the overall load-bearing capacity and deformation resistance of the prefabricated pier. Optionally, the angle formed by the accommodating channel 20 and the oblique side of the protrusion 13 is between 70° and 90°.

[0036] By setting up the above structure, the angle formed by the accommodating channel 20 and the hypotenuse is between 70° and 90°, which can make the prestressing direction close to perpendicular to the splicing interface. When the prestressing direction is close to perpendicular to the splicing interface, the pressure generated by the prestressing can act on the splicing interface to the maximum extent, reducing the lateral dispersion of force caused by angular deviation, thereby ensuring that the pressure is efficiently transmitted to various areas of the splicing surface, making the pressure on the splicing interface more uniform and sufficient. This not only enhances the connection tightness between the first precast pier column 11 and the second precast pier column 12, but also allows the splicing interface to obtain greater effective pressure under the same prestressing tension value, thereby improving the stability and bearing capacity of the entire pier connection structure.

[0037] When prestress is applied to the prestressed member 30, the direction of the prestress can be made nearly perpendicular to the splicing interface between the first prefabricated pier 11 and the second prefabricated pier 12. According to the principles of mechanics, when the direction of the external force is perpendicular to the force-bearing surface, the force transmission efficiency is the highest, so it can act on the force-bearing surface to the greatest extent. Since the prestress is nearly perpendicular to the splicing interface, the pressure applied by the prestress can act more directly on the splicing interface, thereby improving the tensioning efficiency of the prestressed member 30, effectively reducing the dispersion and loss of force, and thus improving the stability and bearing capacity of the entire pier structure. This solution is used to accelerate the connection speed between multiple first prefabricated piers 11 and multiple second prefabricated piers 12, thereby significantly improving the assembly efficiency between multiple first prefabricated piers 11 and multiple second prefabricated piers 12.

[0038] In this embodiment, the angle can be set to 70°, 80° or 90°.

[0039] Optionally, an epoxy resin layer is provided on the surfaces of the protrusion 13 and the recessed portion 14 .

[0040] By setting up the above structure and utilizing the fluidity and plasticity of the epoxy resin adhesive layer, the adhesive layer is squeezed and filled into the gap between the protrusion 13 and the recess 14 during insertion. The adhesive layer can fill the tiny gap caused by dimensional deviations between the two by its own flow, allowing the protrusion 13 and the recess 14 to fit better. Furthermore, for slight positional deviations between the protrusion 13 and the recess 14, the adhesive layer provides a certain buffer and adjustment space before curing, reducing stress concentration caused by the hard contact between the protrusion 13 and the recess 14, and alleviating installation difficulties caused by errors. Furthermore, the epoxy resin adhesive layer effectively blocks external moisture, dust, corrosive media, and the like from entering the splicing interface. This not only prevents impurities from corroding the prestressed member 30 and the pier column concrete, thus protecting the durability of the structure, but also prevents rainwater and other substances from penetrating through the splicing interface into the pier, affecting the stability of the overall structure.

[0041] Optionally, the prestressing member 30 comprises a steel rod or a steel bar.

[0042] Optionally, a filling member is provided in the accommodating channel 20, and the filling member is used to fill the gap between the prestressed member 30 and the accommodating channel 20. In this embodiment, the filling member is cement slurry.

[0043] By setting up the above structure, since the cement slurry has good fluidity and filling properties, it can fully penetrate into the tiny gap between the prestressed member 30 and the accommodating channel 20 after pouring. After it hardens, the prestressed member 30 and the accommodating channel 20 can be combined into a whole. This not only stabilizes the prestressed member 30, preventing it from shaking or displacing in the accommodating channel 20, ensuring the stability of prestress transmission, but also enhances the force performance between the prestressed member 30 and the pier, so that the prestress is more evenly transmitted to the entire pier structure. At the same time, the hardening of the cement slurry can effectively isolate external air, moisture and corrosive media from entering the gap, thereby improving the corrosion resistance of the prestressed member 30 and ensuring the long-term durability of the pier connection structure. In addition, cement slurry is low in cost and will not significantly increase costs while ensuring construction quality.

[0044] Optionally, the mortise and tenon type prefabricated assembled bridge pier and the construction method thereof further include: a receiving platform 50 connected to an end of the pier column unit located at the bottom in the vertical direction, away from the adjacent pier column unit.

[0045] By installing this structure, the receiving platform 50 provides a stable support platform for the lowest pier unit, evenly distributing the vertical load transmitted by the pier unit, preventing concentrated load from causing excessive localized pressure on the foundation, effectively protecting the integrity of the foundation structure and ensuring the overall stability of the pier. Furthermore, the installation of the receiving platform 50 provides additional protection for the lowest pier unit, preventing the bottom of the pier unit from being eroded by rainwater and debris, further extending the service life of the pier. In a second aspect, the present invention further provides a construction method for a prefabricated assembled bridge pier, comprising: S1: prefabricate a plurality of first prefabricated pier columns 11 and a plurality of second prefabricated pier columns 12, and pre-assemble the plurality of first prefabricated pier columns 11 and the plurality of second prefabricated pier columns 12; S2: applying epoxy resin glue between the first prefabricated pier 11 and the adjacent second prefabricated pier 12, and nesting and splicing the plurality of first prefabricated piers 11 and the plurality of second prefabricated piers 12 to form a prefabricated pier assembly 10; S3: Connecting the lower end of the prefabricated pier assembly 10 to the receiving platform 50; S4: Installing prestressed members 30 on the plurality of first prefabricated piers 11 and the plurality of second prefabricated piers 12 and completing tensioning; S5: Grouting is performed on the receiving channel 20 .

[0046] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A mortise and tenon type prefabricated assembled bridge pier, characterized in that: include: A prefabricated pier assembly (10) comprises a plurality of first prefabricated piers (11) and a plurality of second prefabricated piers (12), wherein the plurality of first prefabricated piers (11) and the plurality of second prefabricated piers (12) are alternately arranged in a vertical direction, wherein the first prefabricated piers (11) and the adjacent second prefabricated piers (12) form a pier unit, wherein each of the pier units has a accommodating channel (20) extending therethrough, wherein one end of the accommodating channel (20) is located on one side of the first prefabricated pier (11) in the horizontal direction, and the other end of the accommodating channel (20) is located on the other side of the second prefabricated pier (12) in the horizontal direction, and an extending direction of the accommodating channel (20) has an angle with the vertical direction and a connecting surface between the first prefabricated pier (11) and the second prefabricated pier (12), and the accommodating channel (20) is used to accommodate a prestressed member (30); Anchors (40) are anchored at both ends of the accommodating channel (20), and both ends of the prestressed member (30) are respectively connected to the anchors (40) and fixed by the anchors (40).

2. The mortise and tenon type prefabricated assembled bridge pier according to claim 1, characterized in that: The first prefabricated pier (11) and the second prefabricated pier (12) both have a first side and a second side arranged opposite to each other in a horizontal direction, and the accommodating channel (20) comprises: A plurality of first pipes (21) are arranged in parallel and spaced apart in a vertical direction, one end of the first pipe (21) is located on a first side of the first prefabricated pier (11), and the other end of the first pipe (21) is located on a second side of the second prefabricated pier (12); A plurality of second pipes (22) are arranged in parallel and spaced apart in a vertical direction, one end of the second pipe (22) is located on the second side of the first prefabricated pier (11), and the other end of the second pipe (22) is located on the first side of the second prefabricated pier (12), and the first pipe (21) and the second pipe (22) at the same height as its two ends are symmetrically arranged along the center line of the pier unit in the vertical direction.

3. The mortise and tenon type prefabricated assembled bridge pier according to claim 2, characterized in that: One of a raised portion (13) and a recessed portion (14) is provided at one end of the first prefabricated pier (11) close to the second prefabricated pier (12), and the other of the raised portion (13) and the recessed portion (14) is provided at one end of the second prefabricated pier (12) close to the first prefabricated pier (11), and the raised portion (13) is inserted into the recessed portion (14).

4. The mortise and tenon type prefabricated assembled bridge pier according to claim 3, characterized in that: The cross section of the raised portion (13) in the vertical direction is trapezoidal.

5. The mortise and tenon type prefabricated assembled bridge pier according to claim 3, characterized in that: A first reinforcement member (15) is provided in the first prefabricated pier (11), and the first reinforcement member (15) extends along the edge of the first prefabricated pier (11); a second reinforcement member (16) is provided in the second prefabricated pier (12), and the second reinforcement member (16) extends along the edge of the second prefabricated pier (12).

6. The mortise and tenon type prefabricated assembled bridge pier according to claim 3, characterized in that: The angle formed by the accommodating channel (20) and the oblique side of the protruding portion (13) is between 70° and 90°.

7. The mortise and tenon type prefabricated assembled bridge pier according to claim 3, characterized in that: An epoxy resin adhesive layer is provided on the surfaces of the raised portion (13) and the recessed portion (14).

8. A mortise and tenon type prefabricated assembled bridge pier according to any one of claims 1 to 7, characterized in that: The prestressed member (30) comprises a steel bar or a steel bar.

9. The mortise and tenon type prefabricated assembled bridge pier according to any one of claims 1 to 7, characterized in that: A filling piece is provided in the accommodating channel (20), and the filling piece is used to fill the gap between the prestressed piece (30) and the accommodating channel (20).

10. A construction method for mortise and tenon type prefabricated assembled bridge piers, characterized in that: include: Prefabricating a plurality of first prefabricated pier columns (11) and a plurality of second prefabricated pier columns (12), and pre-assembling the plurality of first prefabricated pier columns (11) and the plurality of second prefabricated pier columns (12); Applying epoxy resin glue between the first prefabricated pier (11) and the adjacent second prefabricated pier (12), and nesting and splicing a plurality of the first prefabricated piers (11) and a plurality of the second prefabricated piers (12) to form a prefabricated pier assembly (10); splicing the lower end of the prefabricated pier column assembly (10) with the receiving platform (50); Installing prestressed members (30) on a plurality of the first prefabricated piers (11) and a plurality of the second prefabricated piers (12) and completing tensioning; The receiving channel (20) is grouted.

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