Pre-embedded structure and pre-embedded control method of variable cross-section pier

Abstract

The present application relates to the technical field of bridge construction, and provides a variable-section pier body steel bar embedded structure and embedded control method. The variable-section pier body steel bar embedded structure includes: a toothed plate ring, a reinforcement ring, and embedded steel bars connecting the toothed plate ring and the reinforcement ring; the toothed plate ring is located on the top surface of the pedestal, and is fixedly connected to the pedestal steel bars on the top surface of the pedestal; a plurality of slots are distributed on the inner edge of the toothed plate ring; the slots correspond to the positions of the embedded steel bars on the top surface of the pedestal; the reinforcement ring is located inside the pedestal, and is fixedly connected to the inside of the pedestal; the slots and the reinforcement ring define the fixed position of each embedded steel bar. The technical solution provided by the present application can help improve the accuracy of embedding the embedded steel bars.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction, and in particular to a variable-section pier body steel bar embedded structure and embedded control method. Background Art

[0002] During the construction of the foundation, it is necessary to pre-embed the pier body steel bars. Conventional pier body steel bar embedding is done by drawing lines or pulling boundary lines with a stone pencil according to the measured layout. This has low positioning accuracy. In addition, variable-section steel bars have a certain slope. It is difficult to simulate the steel bar slope by only performing single-point positioning on the top surface of the foundation steel bars. This results in the design slope of the steel bars at the variable-section position being inconsistent with the pre-embedded slope, which will affect the setting thickness of the pier body steel bar protective layer.

[0003] Conventional pier body steel bar embedding is only based on the design position. The steel bars on the top surface of the pedestal are spot welded and fixed with the embedded steel bars, and a single point is used for fixation. This embedding control scheme is effective for the embedding of steel bars with equal cross-sections. However, for steel bars with slopes, single-point positioning is difficult to ensure their inclination. When the slope of the steel bars is inconsistent with the design, it is easy to cause a low qualified rate of the steel bar protection layer, thereby affecting the embedding accuracy of the variable-section pier body steel bars. Summary of the invention

[0004] In view of the problem of insufficient pre-embedded precision of existing variable-section pier body steel bars, the present application provides a variable-section pier body steel bar pre-embedded structure and a pre-embedded control method.

[0005] On the one hand, the variable cross-section pier body steel bar embedded structure provided by the present application comprises: a tooth plate ring, a reinforcement ring and embedded steel bars connecting the tooth plate ring and the reinforcement ring;

[0006] The toothed plate ring is located on the top surface of the cap and is fixedly connected to the cap steel bars on the top surface of the cap; a plurality of slots are arranged on the inner edge of the toothed plate ring; the slots correspond to the positions of the embedded steel bars on the top surface of the cap;

[0007] The reinforcing ring is located inside the cap and is fixedly connected to the inside of the cap;

[0008] The clamping groove and the reinforcement ring define the fixed position of each embedded steel bar.

[0009] In an optional embodiment, the variable-section pier body steel bar embedded structure comprises:

[0010] The tooth plate ring is formed by connecting at least one straight tooth plate segment and / or at least one arc-shaped tooth plate segment end to end to form a cross-sectional profile of the pier body; the shape of the reinforcement ring is consistent with that of the tooth plate ring.

[0011] In an optional embodiment, the tooth plate ring is an annular structure, which includes two straight segment tooth plate segments and two arc-shaped tooth plate segments, and the end of each of the arc-shaped tooth plate segments is respectively connected to the end of the straight segment tooth plate segment.

[0012] In an optional embodiment, the thickness of each of the straight-segment tooth blocks or arc-shaped tooth blocks is not less than 1 cm.

[0013] In an optional embodiment, the reinforcement ring is prefabricated with stirrups; the reinforcement ring is used for welding the main reinforcement of the foundation and the embedded steel bars.

[0014] On the one hand, the present application provides a method for controlling the pre-embedding of variable-section pier steel bars, which is used to install the pre-embedded structure of variable-section pier steel bars described in any of the above embodiments, and at least comprises the following steps:

[0015] Prefabricate the reinforcement ring according to the butt joint position between the pier body and the cap;

[0016] Before the installation of the cap reinforcement is completed, the reinforcement ring is installed;

[0017] After the installation of the cap steel bars is completed, a toothed plate ring is prefabricated according to the positions of the main bars and the embedded steel bars, and fixed to the top surface of the cap;

[0018] Install the embedded steel bars.

[0019] In an optional embodiment, the step of prefabricating the tooth plate ring according to the positions of the main reinforcement and the pre-embedded reinforcement of the pier body includes:

[0020] The prefabricated steel plates are grooved one by one according to the position of each main reinforcement and embedded steel bars of the pier body, and toothed plate rings matching the positions of the main reinforcement and embedded steel bars of the pier body are prefabricated.

[0021] In an optional embodiment, before the step of slotting the prefabricated steel plates one by one according to the position of each main reinforcement and embedded reinforcement of the pier body, the step includes:

[0022] According to the cross-sectional profile of the pier body at the butt joint position between the pier body and the top surface of the cap, the prefabricated steel plate is divided into at least one straight steel plate segment and at least one arc steel plate segment enclosed by end-to-end connection;

[0023] At the butt joint between the pier body and the top surface of the cap, two adjacent prefabricated steel plates are fixedly connected.

[0024] In an optional embodiment, the step of installing the reinforcement ring includes:

[0025] Deducting the cross-sectional outline dimensions of the embedded steel bars in the reinforcement ring to obtain the outline dimensions of the reinforcement ring;

[0026] The stirrups are bent and manufactured according to the outline size of the reinforcement ring, and the reinforcement ring is fixedly connected to the butt joint between the pier body and the cap.

[0027] In an optional embodiment, the step of installing the embedded steel bars includes:

[0028] According to the slot positions of the toothed plate ring, the embedded steel bars are installed one by one in the slots and fixed by welding;

[0029] The portion of the embedded steel bar that contacts the reinforcement ring is welded and fixed to the reinforcement ring.

[0030] The variable-section pier body steel bar embedded structure and embedded control method provided in the present application have the following beneficial effects: through the toothed plate ring and the reinforcing ring on the cap steel bars respectively distributed on the top surface of the cap and the installation plane inside the cap, and the pier body column space formed between the toothed plate ring and the reinforcing ring inside the cap, the fixed position of each of the embedded steel bars in the cap is limited, thereby obtaining a variable-section pier body steel bar embedded structure formed by connecting two cap steel bar planes through a plurality of embedded steel bars, so that the pier column structure constructed in the cap can be fixed in the cap based on the variable-section pier body steel bar embedded structure; and, according to the changes in the plane shape and size between the toothed plate ring and the reinforcing ring, the inclination of the embedded steel bars along the extension direction of the pier body meets the preset slope, thereby helping to improve the accuracy of the variable-section embedded steel bars.

[0031] The method for pre-embedding control of variable-section pier steel bars provided in this application has the following beneficial effects:

[0032] By using the docking position between the pier body and the pedestal corresponding to the different installation planes of the pedestal, reinforcing rings and toothed plate rings of the same shape and different sizes are set, and then the embedded steel bars are connected and fixed to the reinforcing rings and toothed plate rings, so that the embedded steel bars can form corresponding slopes with various installation planes of the pedestal, including the top surface of the pedestal, according to the size changes of the reinforcing rings and toothed plate rings, to ensure that the embedded steel bars meet the preset slope.

[0033] Additional aspects and advantages of the present application will be partially given in the following description, which will become obvious from the following description, or will be learned through practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0035] Figure 1 A schematic structural diagram of a variable-section pier body steel bar embedded structure provided by an embodiment of the present application;

[0036] Figure 2A schematic diagram of the structure of a toothed plate ring of a variable-section pier body steel bar embedded structure on the top surface of a cap provided by an embodiment of the present application;

[0037] Figure 3 A schematic diagram of the structure of a reinforcement ring of an installation plane inside a cap for a variable-section pier body pre-embedded steel bar structure provided in one embodiment of the present application;

[0038] Figure 4 A schematic flow chart of a method for pre-embedding control of variable-section pier reinforcement provided in one embodiment of the present application. DETAILED DESCRIPTION

[0039] The present application will be further described below in conjunction with the accompanying drawings and exemplary embodiments, wherein the same reference numerals in the accompanying drawings all refer to the same components. In addition, if the detailed description of the known technology is not necessary for illustrating the features of the present application, it will be omitted.

[0040] In view of the problem of insufficient pre-embedded precision of existing variable-section pier body steel bars, the present application provides a variable-section pier body steel bar pre-embedded structure and a pre-embedded control method. The present application provides a variable-section pier body steel bar pre-embedded structure and a pre-embedded control method.

[0041] refer to Figure 1-3 , Figure 1 A schematic structural diagram of a variable-section pier body steel bar embedded structure provided by an embodiment of the present application; Figure 2 A schematic diagram of the structure of a toothed plate ring of a variable-section pier body steel bar embedded structure on the top surface of a cap provided by an embodiment of the present application; Figure 3 A schematic structural diagram of a reinforcement ring of an installation plane inside a cap for a variable-section pier body pre-embedded steel bar structure provided in one embodiment of the present application.

[0042] In view of the above problems, the present application provides a variable cross-section pier body steel bar embedded structure, which at least comprises: a tooth plate ring 200, a reinforcement ring 300 and embedded steel bars 110. The embedded steel bars 110 are connected between the tooth plate ring 200 and the reinforcement ring 300 to form the variable cross-section pier body steel bar embedded structure provided by the present application.

[0043] In this embodiment, the toothed plate ring 200 and the reinforcing ring 300 are both arranged in the cap 100, and are specifically fixedly connected to the cap top surface A and the interior of the cap below the cap top surface A, respectively, wherein the reinforcing ring 300 is fixed on the mounting plane B inside the cap. The mounting plane to which the reinforcing ring 300 is fixed is selected according to the stress condition after the embedded steel bars 110 form the pier body.

[0044] The toothed plate ring 200 is arranged to correspond to the shape of the pier body on the plane of the top surface A of the cap. A plurality of slots 230 are arranged on the inner edge of the toothed plate ring 200. The distribution of the slots 230 corresponds to the position of the embedded steel bars 110 of the pier body on the top surface A of the cap. That is, the position where the slots 230 are opened is the position where the embedded steel bars 110 intersect with the top surface A of the cap. The corresponding characteristics of the slots 230 can be uniform distribution, or other distribution forms can be performed according to the actual design requirements of the embedded steel bars 110.

[0045] The reinforcing ring 300 is fixed below the toothed plate ring 200 , and the shape of the reinforcing ring 300 corresponds to the shape of the mounting plane B of the pier body inside the cap.

[0046] In this embodiment, the pier body is perpendicular to the top surface A of the pedestal, and the installation plane B inside the pedestal is parallel to the top surface A of the pedestal. The vertical center line of the reinforcement ring 300 and the toothed plate ring 200 coincides with the vertical center line of the pier body.

[0047] In this embodiment, the toothed plate ring 200 and the reinforcing ring 300 are respectively fixed on the cap steel bars of the cap, and the pier column space formed between the toothed plate ring 200 and the reinforcing ring 300 inside the cap limits the fixed position of each embedded steel bar 110 in the cap 100, thereby obtaining a variable-section pier steel bar embedded structure formed by a plane connecting two caps through a plurality of embedded steel bars 110, so that the pier column structure constructed in the cap 100 can be fixed in the cap 100 based on the variable-section pier steel bar embedded structure; and, according to the change in the plane shape and size between the toothed plate ring 200 and the reinforcing ring 300, the inclination of the embedded steel bar 110 along the extension direction of the pier body meets the preset slope, thereby helping to improve the accuracy of the variable-section embedded steel bars 110.

[0048] Based on the above embodiment, the tooth plate ring 200 can be formed by splicing at least two tooth plate blocks. Figure 2-3 The toothed plate ring 200 includes a rectangle in the middle and two semicircles on both sides thereof, wherein the diameter of any semicircle is the same as the wide side of the middle rectangle.

[0049] According to the shape of the toothed plate ring 200, the toothed plate ring 200 is divided into at least two toothed plates. Among them, at least one toothed plate is a straight segment toothed plate, and the other is an arc-shaped toothed plate. The shape of the arc-shaped toothed plate depends on the number of toothed plates in the toothed plate ring 200 and the position of the division.

[0050] refer to Figure 2In this embodiment, the toothed plate ring 200 is formed by merging four toothed plates, two of which are straight-segment toothed plates 210, and the length of the two straight-segment toothed plates 210 is the long side of the rectangular portion of the toothed plate ring 200. The other two are arc-shaped toothed plates 220, and the length of the two arc-shaped toothed plates 220 is the circumference of the two semicircular portions of the toothed plate ring 200, and they are respectively located on both sides of the above-mentioned two straight-segment toothed plates 210. The ends of each of the arc-shaped toothed plates are respectively butted against the ends of the straight-segment toothed plates, and the corresponding butting positions are as follows: Figure 2 Point a in .

[0051] For each tooth plate, whether it is a straight segment tooth plate 210 or an arc-shaped tooth plate 220, at least one tooth plate has a thickness of not less than 1 cm, so as to ensure that the tooth plate ring 200 has sufficient strength to fix the embedded steel bars 110 to the top surface A of the base.

[0052] The two adjacent toothed plates that are combined to form the toothed plate ring 200 are connected end to end to enclose the cross-sectional profile of the pier body located on the top surface A of the cap. Each toothed plate is fixed at a corresponding position on the top surface A of the cap, so that the enclosed toothed plate ring 200 can be fixed on the top surface A of the cap as a whole.

[0053] In addition, the tooth plate ring 200 may also be a whole annular tooth plate fixed to the top surface A of the support platform.

[0054] Correspondingly, the shape of the reinforcement ring 300 fixed inside the pedestal and located below the toothed plate ring 200 is consistent with that of the toothed plate ring 200. If the above embodiment is continued, the reinforcement ring 300 can be a ring-shaped structure including a rectangle in the middle and two semicircles located on both sides thereof. The size of the reinforcement ring 300 is determined according to the preset slope of the embedded steel bars 110 between the toothed plate ring 200 and the reinforcement ring 300, and the distance between the toothed plate ring 200 and the reinforcement ring 300. Therefore, the toothed plate ring 200 and the toothed plate ring 200 are arranged to form a variable cross-section pier body.

[0055] The reinforcing ring 300 is prefabricated with stirrups 310. The embedded steel bars 110 are welded to the outside of the reinforcing ring 300, and the main bars of the cap are welded to the lower surface of the reinforcing ring 300, so as to fix the reinforcing ring 300 to the corresponding installation plane B inside the cap, and the embedded steel bars 110 are embedded and fixed inside the cap through the reinforcing ring 300.

[0056] Furthermore, a plurality of slots 230 are evenly distributed on the outer side of the reinforcement ring 300. In this embodiment, the slot 230 of the toothed plate ring 200 can be defined as a first slot, and the slot of the reinforcement ring 300 can be defined as a second slot. The second slot (not shown) is set correspondingly to the first slot. The slope of the line connecting the second slot and the first slot, that is, the second slot and the first slot connected by the same preset steel bar, is the same as the preset slope.

[0057] refer to Figure 4 , Figure 4 A schematic flow chart of a method for pre-embedding control of variable-section pier reinforcement provided in one embodiment of the present application.

[0058] Based on the variable-section pier body steel bar pre-embedded structure provided in any of the above embodiments, the present application further provides a variable-section pier body steel bar pre-embedded control method, the method comprising at least the following steps:

[0059] S10, prefabricate a reinforcement ring 300 according to the butt joint position between the pier body and the cap;

[0060] S20, before the installation of the cap reinforcement is completed, installing the reinforcement ring 300;

[0061] S30, after the installation of the cap steel bars is completed, a toothed plate ring 200 is prefabricated according to the positions of the main bars and the embedded steel bars 110, and fixed at the top surface A of the cap;

[0062] S40, installing the embedded steel bars 110.

[0063] In the embodiment provided in the present application, in the embedded control method of the variable cross-section pier body steel bars executed according to the above steps S10-S40, firstly, the reinforcing ring 300 is prefabricated according to the cross-sectional size of the installation plane B corresponding to the installation docking of the pier body inside the cap. Then, the cap steel bars at the docking position of the cap where the pier body is located are installed. The installation of the cap steel bars includes: the installation plane B inside the cap for fixing the reinforcing ring 300, and the cap steel bars on the top surface A of the cap for fixing the toothed plate ring 200. After completing the installation of the cap steel bars at the installation plane B for fixing the reinforcing ring 300, after measuring and positioning to obtain the precise installation position of the pier body on the cap, the reinforcing ring 300 is installed at the docking position of the pier body on the installation plane B. Specifically, the reinforcing ring 300 can be fixed to the main reinforcement on the steel bar network to ensure the fixing strength of the reinforcing ring 300 to the embedded steel bars 110.

[0064] Then, the cap steel bars of the cap top surface A of the fixed tooth plate ring 200 located above the installation plane B are installed, and after the installation is completed, the tooth plate ring 200 is prefabricated. The tooth plate ring 200 is prefabricated according to the cross-sectional size of the docking position of the pier body on the cap top surface A and the distribution of the main reinforcement on the cap top surface A. After the prefabrication process of the tooth plate ring 200 is completed, the tooth plate ring 200 or a plurality of tooth plates constituting the tooth plate ring 200 is obtained, and the tooth plate ring 200 or the tooth plate is installed at the docking position of the pier body on the cap top surface A.

[0065] After the fixing process of the reinforcing ring 300 and the toothed plate ring 200 in the cap 100 is completed, the embedded steel bars 110 of the pier body are connected between the reinforcing ring 300 and the toothed plate ring 200, and finally a variable-section pier body steel bar embedded structure is formed in the cap 100.

[0066] Based on the embedded control method of the variable-section pier body steel bars provided in the above-mentioned embodiment, the reinforcing ring 300 and the toothed plate ring 200 of the same shape and different sizes are set corresponding to the docking position of the pier body and the pedestal on different installation planes B of the pedestal, and then the embedded steel bars 110 are connected and fixed to the reinforcing ring 300 and the toothed plate ring 200, so that the embedded steel bars 110 can form corresponding slopes with each installation plane B of the pedestal, including the top surface A of the pedestal, according to the size changes of the reinforcing ring 300 and the toothed plate ring 200, so as to ensure that the embedded steel bars 110 meet the preset slope.

[0067] The above step S30 further includes:

[0068] The prefabricated steel plates are grooved one by one according to the position of each main reinforcement and embedded steel bar 110 of the pier body, and toothed plate rings 200 matching the positions of the main reinforcement and embedded steel bars 110 of the pier body are prefabricated.

[0069] The main reinforcement is the main reinforcement forming at least one installation plane B of the cap, and the embedded reinforcement 110 is the reinforcement of the pier body embedded in the cap longitudinally. In this embodiment, the toothed plate ring 200 fixes the embedded reinforcement 110 longitudinally on the top surface A of the cap by means of a fixed combination structure of the main reinforcement corresponding to the installation plane B of the cap.

[0070] In this embodiment, the toothed plate ring 200 is not a simple circular ring, but a circular ring with a slot 230. Before forming the toothed plate ring 200, a prefabricated circular steel plate of corresponding size is prepared according to the docking position between the pier body and the top surface A of the cap.

[0071] Before prefabricating the circular steel plate, at least one straight steel plate and at least one arc steel plate can be combined into the circular steel plate according to the cross-sectional profile of the pier body at the docking position between the pier body and the top surface A of the pedestal, or the prefabricated steel plate can be divided into at least one straight steel plate and at least one arc steel plate that are connected end to end and enclosed, and then, according to the docking position between the pier body and the top surface A of the pedestal, two adjacent prefabricated steel plates are respectively fixed to the docking positions corresponding to the top surface A of the pedestal, and the prefabricated steel plates are fixedly connected to each other. In this embodiment, the prefabricated steel plates can be fixedly connected to each other by connecting members such as screws.

[0072] According to the circular steel plate, or the straight steel plate and the arc steel plate, grooves are cut one by one at the corresponding positions of the circular steel plate to form corresponding slots 230. In the process of slotting, the position of the corresponding slot 230 is set according to the position of the embedded steel bar 110 of the corresponding pier body and the position of the main reinforcement of the top surface A of the pedestal. The position of the embedded steel bar 110 includes factors such as the distribution position of the embedded steel bar 110, the specific position of the pier body corresponding to the corresponding individual steel bar, and the relative position between the embedded steel bars 110, so as to ensure that the slots 230 opened can meet the preset distribution of the pier body. The slotting process refers to the position of the main reinforcement of the top surface A of the pedestal to ensure that the slots 230 opened can avoid the position of the main reinforcement, so that each slot 230 can correspond to the gap position between the main reinforcements, so as to avoid the failure of normal installation due to the obstruction of the main reinforcement during the subsequent installation of the embedded steel bar 110, which affects the distribution and fixation of the embedded steel bar 110.

[0073] The step S20 of installing the reinforcement ring 300 in the above embodiment may further include:

[0074] Deduct the cross-sectional outline dimension of the main reinforcement in the reinforcement ring 300 to obtain the outline dimension of the reinforcement ring 300;

[0075] The stirrups 310 are bent and manufactured according to the outline size of the reinforcement ring 300, and the reinforcement ring 300 is fixedly connected to the butt joint between the pier body and the cap.

[0076] In this embodiment, the outline size of the reinforcement ring 300 is determined according to the cross-sectional outline size of the docking position of the pier body and the installation plane B where the reinforcement ring 300 is installed, and the pre-prepared stirrups 310 are bent and manufactured according to the outline size of the reinforcement ring 300. Specifically, the stirrups 310 are straightened and bent corresponding to the straight line segments and arc segments in the outline of the reinforcement ring 300, and after the annular reinforcement ring 300 that meets the outline size of the obtained reinforcement ring 300 is formed, the reinforcement ring 300 is fixedly connected to the docking position of the installation plane B of the pier body and the cap. Further, after the reinforcement ring 300 is precisely positioned according to the outline and docking position of the pier body and the installation plane B of the cap, the reinforcement ring 300 is welded to the steel bars of the installation plane B.

[0077] For step S40 of the above embodiment, the following steps may be further included:

[0078] According to the position of the slot 230 of the toothed plate ring 200, the embedded steel bars 110 are installed one by one in the slot 230 and temporarily fixed;

[0079] The portion of the embedded steel bar 110 that contacts the reinforcement ring 300 is welded and fixed to the reinforcement ring 300 .

[0080] According to the distribution of the slots 230 of the slotted toothed plate ring 200 fixed on the top surface A of the cap, the embedded steel bars 110 of the pier body are installed one by one in the slots 230, and the connection position between the lower end of the embedded steel bars 110 and the reinforcement ring 300 is positioned. Figure 3 In this embodiment, the embedded steel bar 110 is located outside the reinforcing ring 300. After the embedded steel bars 110 are arranged in the slots 230 one by one and temporarily fixed, the embedded steel bars 110 are positioned against the outside of the reinforcing ring 300. When it is confirmed that the connection position between the embedded steel bars 110 and the reinforcing ring 300 is the position for positioning, the embedded steel bars 110 are welded to the position of the reinforcing ring 300, and the connection relationship between the embedded steel bars 110 and the slots 230 where the toothed plate ring 200 is installed is reinforced to prevent the embedded steel bars 110 from being separated from the slots 230.

[0081] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

Claims

1. A variable cross-section pier steel bar embedded structure, characterized in that: include: A toothed plate ring, a reinforcement ring, and embedded steel bars connecting the toothed plate ring and the reinforcement ring; The toothed plate ring is located on the top surface of the cap and is fixedly connected to the cap steel bars on the top surface of the cap; a plurality of slots are arranged on the inner edge of the toothed plate ring; the slots correspond to the positions of the embedded steel bars on the top surface of the cap; The reinforcing ring is located inside the cap and is fixedly connected to the inside of the cap; The clamping groove and the reinforcement ring define the fixed position of each embedded steel bar; The shape of the reinforcement ring located below the toothed plate ring is consistent with that of the toothed plate ring, and the size of the reinforcement ring is determined according to the preset slope of the embedded steel bars between the toothed plate ring and the reinforcement ring, and the distance between the toothed plate ring and the reinforcement ring; The tooth plate ring is formed by connecting at least one straight tooth plate segment and / or at least one arc tooth plate segment end to end to form a cross-sectional profile of the pier body; The tooth plate ring is an annular structure, which includes two straight-segment tooth plates and two arc-shaped tooth plates, and the end of each arc-shaped tooth plate is respectively connected to the end of the straight-segment tooth plate; The reinforcement ring is prefabricated with stirrups; the reinforcement ring is used for welding the main reinforcement of the pedestal and the embedded steel bars.

2. The variable cross-section pier steel bar embedded structure according to claim 1 is characterized in that: The thickness of each of the straight segment tooth blocks or arc-shaped tooth blocks is not less than 1 cm.

3. A method for controlling the pre-embedding of variable-section pier steel bars, used for installing the pre-embedded structure of variable-section pier steel bars according to any one of claims 1 to 2, characterized in that: It includes at least the following steps: Prefabricate the reinforcement ring according to the butt joint position between the pier body and the cap; Before the installation of the cap reinforcement is completed, the reinforcement ring is installed; After the installation of the cap reinforcement is completed, the tooth plate ring is prefabricated according to the position of the main reinforcement and the embedded reinforcement, and fixed on the top surface of the cap; Install the embedded steel bars.

4. The method for controlling the pre-embedding of variable-section pier steel bars according to claim 3, characterized in that: The step of prefabricating the toothed plate ring according to the positions of the main reinforcement and the embedded reinforcement comprises: The prefabricated steel plates are grooved one by one according to the position of each main reinforcement and embedded steel bars of the pier body, and toothed plate rings matching the positions of the main reinforcement and embedded steel bars of the pier body are prefabricated.

5. The method for controlling the pre-embedding of variable-section pier steel bars according to claim 4, characterized in that: Before the step of slotting the prefabricated steel plates one by one according to the position of each main reinforcement and embedded reinforcement of the pier body, the method includes: According to the cross-sectional profile of the pier body at the butt joint position between the pier body and the top surface of the cap, the prefabricated steel plate is divided into at least one straight steel plate segment and at least one arc steel plate segment enclosed by end-to-end connection; At the butt joint between the pier body and the top surface of the cap, two adjacent prefabricated steel plates are fixedly connected.

6. The method for controlling the pre-embedding of variable-section pier steel bars according to claim 3, characterized in that: The step of installing the reinforcement ring comprises: Deducting the cross-sectional outline dimensions of the embedded steel bars in the reinforcement ring to obtain the outline dimensions of the reinforcement ring; The stirrups are bent and manufactured according to the outline size of the reinforcement ring, and the reinforcement ring is fixedly connected to the butt joint between the pier body and the cap.

7. The method for controlling the pre-embedding of variable-section pier steel bars according to claim 6, characterized in that: The step of installing the embedded steel bars comprises: According to the slot positions of the toothed plate ring, the embedded steel bars are installed one by one in the slots and fixed by welding; The portion of the embedded steel bar that contacts the reinforcement ring is welded and fixed to the reinforcement ring.

Images