Prefabricated assembled bridge pier and forming method thereof

Abstract

The present invention relates to a prefabricated assembled bridge pier and a forming method of the prefabricated assembled bridge pier, wherein the prefabricated assembled bridge pier includes: a pier column; a pile foundation; a support assembly including a first support portion and a second support portion, wherein the first support portion is arranged above the second support portion, the first support portion is connected to the pier column and used to support the pier column, and the second support portion is connected to the pile foundation and used to support the pile foundation to form a forming space between the pier column and the pile foundation; a cap is arranged in the forming space and used to connect the pile foundation and the pier column. The present application does not require high surface accuracy of the pile foundation and pier column prefabricated parts to be connected and the steel bar positioning accuracy, reduces the forming difficulty, does not need to reserve a sleeve structure on the cap, simplifies the forming process of the cap, reduces the forming difficulty, and improves the forming efficiency. Since there is no need to reserve a sleeve structure, the space occupied by a single steel bar in the cap is reduced, and the space is increased from a single row of steel bars to multiple rows of steel bars, thereby increasing the number of steel bars in the cap and improving the structural strength.

Description

Technical Field

[0001] The present invention relates to the technical field of architectural design, and particularly to a prefabricated and assembled bridge pier and a forming method thereof. Background Art

[0002] In the construction of urban viaducts, the prefabrication and assembly technology can greatly reduce the impact on urban traffic and the surrounding environment, accelerate the construction progress, improve the project quality, and make the bridge construction more environmentally friendly, safe and efficient. Among them, the prefabrication and assembly of the lower bridge structure developed relatively late, and the connection between the pier column and the bearing platform is the top priority of the prefabrication and assembly technology of the lower bridge structure. At present, the common connection methods for the prefabrication and assembly of the lower bridge structure are mainly grouting sleeve connection, grouting corrugated pipe connection, steel strand connection, slot connection, etc.

[0003] The above connection methods are mainly for the connection between the cast-in-place bearing platform and the pier column, with high requirements for the surfaces of the bearing platform and the pier column, and the pressure grouting method needs to be adopted during the connection process. Both require experienced professional teams and careful construction to ensure the quality of prefabrication and assembly, and the construction difficulty is relatively large. Summary of the Invention

[0004] Based on this, it is necessary to provide a prefabricated and assembled bridge pier and a forming method thereof that can reduce the construction difficulty for the above problems.

[0005] A prefabricated and assembled bridge pier, comprising:

[0006] A pier column;

[0007] A pile foundation;

[0008] A support assembly, the support assembly includes a first support portion and a second support portion, the first support portion is disposed above the second support portion, the first support portion is connected to the pier column and is used to support the pier column, the second support portion is connected to the pile foundation and is used to support the pile foundation, so as to form a forming space between the pier column and the pile foundation;

[0009] A bearing platform, the bearing platform is disposed in the forming space and is used to connect the pile foundation and the pier column.

[0010] Preferably, in one embodiment, the bearing platform includes:

[0011] Pier column steel bars, the pier column steel bars are disposed on the pier column and extend downward in the forming space;

[0012] Bearing platform steel bars, the bearing platform steel bars are disposed on the pile foundation and are located in the forming space; the bearing platform steel bars and the pier column steel bars are arranged in a cross manner;

[0013] A concrete structure, the concrete structure being cast and formed within the forming space around the pier reinforcement and the cap reinforcement.

[0014] Preferably, in one embodiment, the pier reinforcement is integrally formed with the pier.

[0015] Preferably, in one embodiment, the cap reinforcement is sleeved on the top of the pile foundation.

[0016] Preferably, in one embodiment, the prefabricated and assembled pier further includes an adjustment assembly, the adjustment assembly being located on one side of the support assembly and used for adjusting the placement position of the support assembly.

[0017] Preferably, in one embodiment, the adjustment assembly is a leveling jack.

[0018] Preferably, in one embodiment, the prefabricated and assembled pier further includes:

[0019] A position sensing assembly, the position sensing assembly being used for obtaining the position information of the support assembly;

[0020] A control assembly, the control assembly being electrically connected to the adjustment assembly and the position sensing assembly respectively, and used for receiving the position information and driving the adjustment assembly to adjust the placement position of the support assembly.

[0021] Preferably, in one embodiment, the projection of the pier falls on the pile foundation, and the support assembly vertically supports the pier.

[0022] Preferably, in one embodiment, the projection of the pier falls outside the pile foundation, and the support assembly obliquely supports the pier.

[0023] A forming method for a prefabricated and assembled pier, including:

[0024] Prefabricating a support assembly, a pier and a pile foundation respectively;

[0025] Installing the support assembly on the top of the pile foundation;

[0026] Installing the pier on the top of the support assembly;

[0027] Pouring a concrete material into the forming space between the pier and the pile foundation to obtain a cap.

[0028] Preferably, in one embodiment, before pouring the concrete material into the forming space, it further includes:

[0029] Pre-treating the bottom surface of the pier to improve the roughness of the bottom surface of the pier.

[0030] Preferably, in one of the embodiments, after the pier is installed on the top of the support assembly, the method further comprises:

[0031] A fixing assembly is used to lock the support assembly and the pile foundation.

[0032] The above-mentioned prefabricated assembled bridge pier forms a forming space between the pier column and the pile foundation through the supporting assembly, and then casts the cap in the formed space, and then connects the pier column and the pile foundation through the cap. The above-mentioned prefabricated assembled bridge pier does not require high surface accuracy of the pile foundation and pier column prefabricated parts to be connected and the steel bar positioning accuracy, thus reducing the difficulty of forming. At the same time, when the cap is completed by the casting process, there is no need to reserve a sleeve structure on the cap. On the one hand, it simplifies the forming process of the cap, reduces the forming difficulty, and improves the forming efficiency. On the other hand, since there is no need to reserve a sleeve structure, the space occupied by a single steel bar in the cap is reduced, from the previous single row of steel bars to multiple rows of steel bars, thereby increasing the number of steel bars in the cap and improving the structural strength.

[0033] The above-mentioned forming method of prefabricated assembled bridge piers obtains a forming space between the pile foundation and the pier column by installing the supporting components between the two, realizes direct forming of the cap between the forming space, and then directly connects the pier column and the pile foundation through the cap, thereby optimizing the structure of the prefabricated assembled bridge piers, simplifying the forming method of the prefabricated assembled bridge piers, and reducing the forming difficulty of the prefabricated assembled bridge piers.

[0034] The various specific structures of the present application and their functions and effects will be further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a front view of a prefabricated assembled bridge pier in one of the embodiments of the present application;

[0036] Figure 2 A top view of a prefabricated assembled bridge pier in one of the embodiments of the present application;

[0037] Figure 3 In one embodiment of the present application, the prefabricated bridge pier is Figure 2 Sectional view of the AA section;

[0038] Figure 4 In one embodiment of the present application, the prefabricated bridge pier is Figure 2 Sectional view of the middle BB section;

[0039] Figure 5 A distribution diagram of support components in a prefabricated assembled bridge pier in one of the embodiments of the present application;

[0040] Figure 6 A distribution diagram of support components in a prefabricated assembled bridge pier in another embodiment of the present application;

[0041] Figure 7 This is the distribution diagram of the support components in the precast and assembled bridge pier in another embodiment of the present application;

[0042] Figure 8 This is the distribution diagram of the support components in the precast and assembled bridge pier in yet another embodiment of the present application;

[0043] Figure 9 This is an embodiment of the present application in which the cap reinforcement is installed on the pile foundation;

[0044] Figure 10 This is an embodiment of the present application in which the support components and the pier column are installed on the pile foundation;

[0045] Figure 11 This is an embodiment of the present application in which a concrete structure is poured between the pier column and the pile foundation.

[0046] Among them, in the reference numerals, 100 - support component; 110 - first support part; 120 - second support part; 200 - pier column; 300 - pile foundation; 400 - cap; 410 - pier column reinforcement; 420 - cap reinforcement; 430 - concrete structure; 500 - cushion; 600 - adjustment component. Detailed implementation manners

[0047] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0050] In the present invention, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0052] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0053] Refer to Figures 1 to 4, in one embodiment, a prefabricated and assembled bridge pier includes a support assembly 100, a pier column 200, a pile foundation 300, and a bearing platform 400. Among them, the pier column 200 is a prefabricated component, the pile foundation 300 can be a prefabricated component or a cast-in-place component on-site, the bearing platform 400 is a cast-in-place component, the support assembly 100 includes a first support portion 110 and a second support portion 120, and the first support portion 110 is disposed above the second support portion 120. Specifically, the first support portion 110 is connected to the pier column 200, and the second support portion 12 is connected to the pier column 200. The first support portion 110 is used to support the pier column 200, and the second support portion 120 is used to support the pile foundation 300 to form a forming space (not labeled) between the pier column 200 and the pile foundation 300, and the bearing platform 400 is disposed in the forming space. Further, the pile foundation 300 and the pier column 200 are connected through the bearing platform 400. It can be understood that the forming space refers to the space between the pier column 200 and the pile foundation 300 other than the space occupied by the support assembly 100. It can be understood that the forming methods of the pier column 200, the pile foundation 300, and the bearing platform 400 are not specifically limited, and any forming method capable of forming the pier column 200, the pile foundation 300, and the bearing platform 400 is within the protection scope of this application.

[0054] In order to improve the support strength of the support assembly 100 for the pier column 200, and further improve the stability of the support of the support assembly 100, in one preferred embodiment, the support assembly 100 and the pier column 200 are integrally formed. For example, the support assembly 100 and the pier column 200 are integrally formed by concrete casting.

[0055] In order to facilitate the forming, transportation, and assembly of the support assembly 100 and the pier column 200, in one preferred embodiment, the support assembly 100 and the pier column 200 are connected by a connecting member. For example, the support assembly 100 and the pier column 200 are connected by bolts, or the support assembly 100 and the pier column 200 are connected by concrete casting.

[0056] Specifically, the connection between the bottom of the support assembly 100 and the pile foundation 300 can be the connection between the side surface of the support assembly 100 and the pile foundation 300, or the connection between the bottom surface of the support assembly 100 and the pile foundation 300. In order to improve the stability of the support assembly 100 itself, in one preferred embodiment, the bottom surface of the support assembly 100 is connected to the pile foundation 300 to improve the stability of the support assembly 100 during the support process.

[0057] The above-mentioned prefabricated assembled bridge pier forms a forming space between the pier column and the pile foundation through the supporting assembly, and then casts the cap in the formed space, and then connects the pier column and the pile foundation through the cap. The above-mentioned prefabricated assembled bridge pier does not require high surface accuracy of the pile foundation and pier column prefabricated parts to be connected and the steel bar positioning accuracy, thus reducing the difficulty of forming. At the same time, when the cap is completed by the casting process, there is no need to reserve a sleeve structure on the cap. On the one hand, it simplifies the forming process of the cap, reduces the forming difficulty, and improves the forming efficiency. On the other hand, since there is no need to reserve a sleeve structure, the space occupied by a single steel bar in the cap is reduced, from the previous single row of steel bars to multiple rows of steel bars, thereby increasing the number of steel bars in the cap and improving the structural strength.

[0058] See also Figure 10 and Figure 11 In one embodiment, the cap 400 includes a pier column reinforcement 410, a cap reinforcement 420 and a concrete structure 430. The pier column reinforcement 410 is arranged at the bottom of the pier column 200 and extends from the bottom of the pier column 200 from top to bottom in the forming space, and the cap reinforcement 420 is arranged on the upper part of the pile foundation 300 and is located in the forming space. The pier column reinforcement 410 and the cap reinforcement 420 are cross-arranged in the forming space and surround the support assembly 100. The concrete structure 430 is cast and formed in the forming space around the pier column reinforcement 410 and the cap reinforcement 420, thereby filling the entire forming space to form the cap 400.

[0059] In another embodiment, the pier steel bar 410 is disposed on a side of the pier 200 and extends from the side of the pier 200 from top to bottom in the forming space.

[0060] The above-mentioned prefabricated assembled bridge pier realizes the stable connection between the pier column reinforcement and the cap, and the cap reinforcement and the pile foundation, and the concrete structure is poured in the forming space around the pier column reinforcement and the cap reinforcement, so as to realize the stable connection between the pier column, the cap and the pile foundation, thereby improving the structural stability of the prefabricated assembled bridge pier. The above-mentioned cap has a simple structure, is easy to operate and has high stability.

[0061] In one embodiment, the cap includes pier column reinforcement, cap reinforcement, pile foundation reinforcement and concrete structure, wherein the pier column reinforcement and the pile foundation reinforcement are tied and connected, the cap reinforcement is sleeved on the pier column reinforcement and the pile foundation reinforcement, and the concrete structure is poured in the forming space around the column reinforcement, the cap reinforcement and the pile foundation reinforcement.

[0062] In order to reduce the connection difficulty between the cap 400 and the pier 200 and improve the stability of the connection between the cap 400 and the pier 200, in one preferred embodiment, the pier steel bar 410 and the pier 200 are integrally formed. Specifically, the steel bars inside the pier 200 extend outward to form the pier steel bar 410.

[0063] The above prefabricated and assembled bridge piers reduce the connection difficulty between pier reinforcement bars and the pier, simplify the connection steps between pier reinforcement bars and the pier, and at the same time, improve the connection strength between pier reinforcement bars and the pier.

[0064] In one embodiment, the cap reinforcement bars 420 are sleeved on the top end of the pile foundation 300, and then the cap 400 formed according to the cap reinforcement bars 420 is sleeved on the pile foundation 300 to achieve the fixed connection between the cap 400 and the pile foundation 300.

[0065] The above prefabricated and assembled bridge piers sleeved the cap reinforcement bars on the top end of the pile foundation, and the concrete structure poured around the cap reinforcement bars covers the top end of the pile foundation, thereby realizing the stable connection between the cap and the pile foundation, simplifying the connection steps of the prefabricated and assembled bridge piers, and improving the connection strength of the prefabricated and assembled bridge piers.

[0066] Refer to Figure 10 and Figure 11 In order to facilitate the formation of the concrete structure 430 in the cap 400, in one embodiment, the above prefabricated and assembled bridge piers further include a cushion layer 500. Among them, the cushion layer 500 is arranged at the bottom of the cap reinforcement bars 420, and the cushion layer 500 is used to ensure the flatness of the support surface of the cap reinforcement bars, thereby improving the stability of the placement of the cap reinforcement bars 420 on the support surface of the cap reinforcement bars, reducing the formation difficulty of the concrete structure 430 in the cap 400, and improving the formation quality of the concrete structure 430. The above prefabricated and assembled bridge piers, due to the cap reinforcement bars being sleeved on the top end of the pile foundation, reduce the pouring difficulty of the concrete structure through the cushion layer arranged at the bottom of the cap reinforcement bars, and improve the pouring quality of the concrete structure.

[0067] In order to improve the support effect of the support assembly 100 on the pier 200, it is necessary to ensure the extension direction of the support assembly 100 to reasonably adjust the force application direction of the support assembly 100 and improve the maximum load that the support assembly 100 can bear. Refer to Figure 10, in one embodiment, the above prefabricated and assembled pier further includes an adjustment assembly 600. Among them, the adjustment assembly 600 is located on one side of the support assembly 100, and the adjustment assembly 600 is used to adjust the placement position of the support assembly 100. Specifically, the placement position of the support assembly 100 includes the position where the support assembly 100 is located and the extension direction of the support assembly 100. For the convenience of description, the position where the first support portion 110 is located is the first position, and the position where the second support portion 120 is located is the second position. When the adjustment assembly 600 is located on one side of the first support portion 110, the adjustment assembly 600 adjusts the position where the support assembly 100 is located by adjusting the first position, and the adjustment assembly 600 adjusts the extension direction of the support assembly 100 by adjusting the second position. On the contrary, when the adjustment assembly 600 is located on one side of the second support portion 120, the adjustment assembly 600 adjusts the position where the support assembly 100 is located by adjusting the second position, and the adjustment assembly 600 adjusts the extension direction of the support assembly 100 by adjusting the first position.

[0068] For the above prefabricated and assembled pier, the placement position of the support assembly can be effectively controlled through the adjustment assembly, and thus the verticality and the position where the support assembly is located can be effectively controlled, improving the support effect of the support assembly on the pier column, ensuring the extension direction of the support assembly, optimizing the stress direction of the adjusted support assembly, increasing the maximum load that the support assembly can bear, and expanding the applicable range of the above threshold assembled pier.

[0069] In one preferred embodiment, the adjustment assembly 600 is a leveling jack, which is arranged between the support assembly 100 and the pile foundation 300 and is used to adjust the first position of the first support portion 110 and the second position of the second support portion 120 of the support assembly 100, so as to adjust the placement position of the support assembly 100. The structure of the above prefabricated and assembled pier is simple, the operation is convenient, the cost is low, and the adjustment accuracy is high.

[0070] In one embodiment, the above prefabricated and assembled pier further includes a position sensing assembly (not shown) and a control assembly (not shown). Among them, the position sensing assembly is used to obtain the position information of the support assembly 100. Specifically, the position sensing assembly includes a first position sensor (not shown) and a second position sensor (not shown). The first position sensor is arranged on the first support portion 110 and is used to obtain the first position of the first support portion 110, and the second position sensor is arranged on the second support portion 120 and is used for the second position of the second support portion 120. The control assembly is electrically connected to the adjustment assembly 600 and the position sensing assembly respectively, and the control assembly is used to receive the position information and drive the adjustment assembly 600 to adjust the placement position of the support assembly 100.

[0071] In one specific embodiment, the above prefabricated and assembled bridge pier controls the adjusting component 600 through the control component to synchronously adjust the supporting component 100, ensuring the stable adjustment of the supporting component 100, avoiding unstable support for the pier column 200 during the adjustment of the supporting component 100, and improving the safety performance. Specifically, the control component can be a PLC (Programmable Logic Controller) computer, which intelligently controls the adjusting component 600 to synchronously adjust the supporting component 100 through the PLC computer, so as to realize the stable vertical installation of the supporting component 100 and the pier column 200.

[0072] In one preferred embodiment, the above prefabricated and assembled bridge pier further includes a fixing component (not shown). Among them, after the adjusting component 600 adjusts the placement position of the supporting component 100, the fixing component is arranged between the supporting component 100 and the pile foundation 300 for maintaining the position of the supporting component 100. For example, the fixing component can be an embedded welding part or mortar.

[0073] The above prefabricated and assembled bridge pier realizes the automatic acquisition of the first position and the second position of the supporting component through the position sensing component and the control component, and the control component automatically controls the adjusting component to adjust the placement position of the supporting component according to the first position and the second position, improving the automation degree of the above prefabricated and assembled bridge pier.

[0074] In one embodiment, refer to Figure 5 and Figure 6 , the projection of the pier column 200 falls on the pile foundation 300, and the supporting component 100 vertically supports the pier column 200. That is, the four sides of the side of the pier column 200 all fall on the pile foundation 300, and the pier column 200 is erected on the pile foundation 300 by arranging a plurality of vertical supporting components 100 on the four sides of the pier column 200. It can be understood that the size, specification and quantity of the supporting component 100 can be arranged inside or outside the side of the pier column 200 according to the positional relationship between the pier column 200 and the pile foundation 300. The supporting component structure in the above prefabricated and assembled bridge pier is simple, which is convenient for the fixed connection with the pier column and improves the connection strength.

[0075] In one embodiment, refer to Figure 7 and Figure 8 , the projection of the pier column 200 falls outside the pile foundation 300, and the supporting component 100 obliquely supports the pier column 200.

[0076] In one specific embodiment, refer to Figure 7 , the two sides of the side of the pier column 200 are aligned with the side of the pile foundation 300, and the pier column 200 is erected on the pile foundation 300 by arranging one-way inclined supporting components 100 on the two non-aligned sides of the pier column 200, and the supporting component 100 one-way obliquely supports the pier column 200.

[0077] In one specific embodiment, refer to Figure 8 , the four sides of the side surface of the pier column 200 are not aligned with the side surface of the pile foundation 300. By arranging a bidirectional inclined support assembly 100 on the pier column 200, the pier column 200 is erected on the pile foundation 300, and the support assembly 100 bidirectionally inclines to support the pier column 200.

[0078] The support assembly in the above prefabricated and assembled bridge pier increases the applicable range of the prefabricated and assembled bridge pier.

[0079] In one embodiment, refer to Figures 9 to 11 , a forming method of a prefabricated and assembled bridge pier, including:

[0080] Step 1: First, prefabricate the support assembly 100, the pier column 200, and the pile foundation 300 respectively.

[0081] Step 2: Install the support assembly 100 on the top of the pile foundation 300.

[0082] Step 3: Install the pier column 200 on the top of the support assembly 100.

[0083] Step 4: Pour concrete materials into the forming space between the pier column 200 and the pile foundation 300 to obtain a bearing platform 400, and connect the pier column 200 and the pile foundation 300 through the bearing platform 400.

[0084] The forming method of the above prefabricated and assembled bridge pier realizes the direct forming of the bearing platform between the forming spaces by installing the support assembly between the pile foundation and the pier column, and then directly connects the pier column and the pile foundation through the bearing platform, optimizing the structure of the prefabricated and assembled bridge pier, simplifying the forming method of the prefabricated and assembled bridge pier, and reducing the forming difficulty of the prefabricated and assembled bridge pier.

[0085] In one embodiment, between Step 3 and Step 4, there is also Step 5: Pretreat the bottom surface of the pier column 200 to increase the roughness of the bottom surface of the pier column. Specifically, the pretreatment can be chiseling treatment. The forming method of the above prefabricated and assembled bridge pier increases the roughness of the bottom surface of the pier column 200 by pretreating the bottom surface of the pier column 200, and then improves the bonding force between the pier column 200 and the bearing platform 400, and improves the connection strength between the pier column 200 and the bearing platform 400.

[0086] In one embodiment, between Step 3 and Step 4, there is also Step 6: Use a fixing component to lock the support assembly 100 and the pile foundation 300. Among them, the fixing component can be measures such as embedded part welding or mortar bedding. The forming method of the above prefabricated and assembled bridge pier is used to maintain the position of the support assembly, and then improve the accuracy of the forming of the prefabricated and assembled bridge pier.

[0087] In one specific embodiment, a method for forming a precast pier includes the following steps:

[0088] Step 1: First, construct the pile foundation 300 and most of the pile cap steel bars 420, and then use the support assembly 100 and the adjustment assembly 600 to temporarily erect the pier column 200 on the constructed pile foundation.

[0089] Step 2: The support assembly 100 should be determined comprehensively considering factors such as the layout of the pile foundation 300, the diameter of the pile foundation 300, and the bearing capacity of the pile foundation 300. Among them, the support assembly 100 needs to ensure that the pier column 200 can be stably erected on the pile foundation 300. According to needs, a concrete structure or a steel structure can be adopted, and the layout of the support assembly 100 should minimize the interference with the pile cap steel bars 420 to improve the structural strength of the pile cap steel bars 420.

[0090] Step 3: The support assembly 100 needs to be attached with leveling jack embedded parts, and PLC computer intelligent synchronous lifting jacks can be installed to achieve vertical installation on site.

[0091] Step 4: After the installation and debugging of the pier column 200 are completed, use measures such as embedded part welding or mortar padding for locking, and then remove the adjustment assembly 100, tie the remaining pile cap steel bars 420, and pour a concrete structure in the forming space around the pier column steel bars 410 and the pile cap steel bars 420 to form the pile cap 400, so that the pier column 200 and the pile cap 400 form an integral structure.

[0092] Step 5: The pier column 200 and the pile cap 400 are connected by the steel bars in the pier column 200 and the support assembly 100 and the steel bars extended from the pier column 200 inserted into the pile cap 400. At the same time, in order to further improve the bonding effect between the pier column 200 and the pile foundation 300, the bottom surface of the pier column 200 is roughened to ensure the bonding effect between the concrete structure 430 and the pier column 200. The above method has simple technology and reliable force, realizes the seamless connection between the pier column and the pile cap, and is equivalent to the situation of cast-in-place pier column after pile cap construction in terms of force. The structural force is the same as that of the conventional cast-in-place structure, avoiding the construction process and uncertainty of the grouting sleeve.

[0093] The forming method of the precast assembled pier provided by the present invention is especially suitable for the situation where precast hollow piers or solid piers need to be provided with two rows or more rows of main steel bars, expanding the precast assembly range of the grouting sleeve connection method which is only applicable to single-row steel bar connection.

[0094] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0095] The above-described embodiments merely represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A prefabricated and assembled bridge pier, characterized in that, Comprising: Pier column; Pile foundation; Support assembly, the support assembly includes a first support portion and a second support portion, the first support portion is disposed above the second support portion, the first support portion is connected to the pier column for supporting the pier column, and the second support portion is connected to the pile foundation for supporting the pile foundation to form a forming space between the pier column and the pile foundation; Cap, the cap is disposed within the forming space for connecting the pile foundation and the pier column; And a fixing assembly, the fixing assembly is disposed between the support assembly and the pile foundation for maintaining the relative position of the support assembly and the pile foundation; Wherein, the cap is formed by pouring within the forming space; The cap includes: Pier column reinforcement, the pier column reinforcement is disposed on the pier column and extends downward within the forming space; Cap reinforcement, the cap reinforcement is disposed on the pile foundation and is located within the forming space; the cap reinforcement is disposed crosswise with the pier column reinforcement; Concrete structure, the concrete structure is poured and formed within the forming space around the pier column reinforcement and the cap reinforcement.

2. The precast and assembled bridge pier according to claim 1, wherein The pier column reinforcement and the pier column are integrally formed.

3. The precast and assembled bridge pier according to claim 1, wherein The cap reinforcement is sleeved on the top end of the pile foundation.

4. The precast and assembled bridge pier according to claim 1, wherein, The prefabricated and assembled bridge pier further includes an adjusting assembly, the adjusting assembly is located on one side of the support assembly for adjusting the placement position of the support assembly.

5. The precast and assembled bridge pier according to claim 4, wherein, The adjusting assembly is a leveling jack.

6. The precast and assembled bridge pier according to claim 4, wherein The prefabricated and assembled bridge pier further includes: Position sensing assembly, the position sensing assembly is used for acquiring the position information of the support assembly; Control assembly, the control assembly is electrically connected to the adjusting assembly and the position sensing assembly respectively, for receiving the position information and driving the adjusting assembly to adjust the placement position of the support assembly.

7. The precast and assembled bridge pier according to claim 1, wherein The projection of the pier column falls on the pile foundation, and the support assembly vertically supports the pier column.

8. The precast and assembled bridge pier according to claim 1, wherein The projection of the pier column falls outside the pile foundation, and the support assembly obliquely supports the pier column.

9. A forming method of the prefabricated and assembled bridge pier according to any one of claims 1-8, characterized in that, Comprising: Prefabricating the support assembly, the pier column and the pile foundation respectively; Installing the support assembly on the top of the pile foundation; Installing the pier column on the top of the support assembly; Pouring concrete material within the forming space between the pier column and the pile foundation to obtain the cap.

10. The forming method of the prefabricated and assembled bridge pier according to claim 9, characterized in that, Before pouring the concrete material within the forming space, further including: Pre-treating the bottom surface of the pier column to improve the roughness of the bottom surface of the pier column.

11. The forming method of the prefabricated and assembled bridge pier according to claim 9, characterized in that, After installing the pier column on the top of the support assembly, further including: Locking the support assembly and the pile foundation by using the fixing assembly.

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