Method for manufacturing and splicing two-section type bent cap steel reinforcement framework

Abstract

The invention relates to a method for manufacturing and splicing a two-section type bent cap steel reinforcement framework, which comprises the following steps of: dividing a main reinforcement in the bent cap framework into two sections in a processing plant, and arranging each section on a positioning frame according to a designed interval; the main reinforcements in one section are connected with the stirrups in the bent cap framework in a temporary and fixed alternate connection mode, and the main reinforcements in the other section are oppositely arranged; the two sections of bent cap frameworks connected with the stirrups are transported to a construction site, and the two sections of bent cap frameworks are hoisted to the position above the installation position one by one and fall to the installation position; the relative positions of the two sections of bent cap frameworks are adjusted so that the two sections of bent cap frameworks can be aligned, the corresponding main reinforcements in the two sections of bent cap frameworks are connected through the sleeves, and finally the main reinforcements temporarily connected with the stirrups are fixedly connected with the corresponding stirrups one by one. The positioning frame is used for limiting the welding and fixing position and angle of the main reinforcements in the bent cap framework, the problem that after two segments of frameworks are connected, the indexes such as the distance and the length of the main reinforcements are large in deviation is solved, and the overall splicing quality of the frameworks is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of bridge engineering, and in particular to a method for manufacturing and splicing a two-segment cap beam reinforcement skeleton. Background Art

[0002] The steel bar skeleton of the bridge cap beam is generally pre-fabricated in the processing plant and assembled on site. For the cap beam with a longer length, in order to facilitate transportation and lifting, the steel bar skeleton needs to be made in two sections in the processing plant and spliced ​​with straight thread sleeves on site. Each section skeleton has two ends, the spliced ​​end and the non-spliced ​​end. During the pre-fabrication process of the two spliced ​​ends, the position of each main bar at the spliced ​​end must be accurately controlled, otherwise it will cause the main bar to be difficult to screw into the sleeve during on-site splicing, or the length of the sleeve screwed into it will be insufficient, which will affect the connection strength.

[0003] When the steel skeleton is installed on site, the segmented production and transportation, on-site hoisting and other processes will inevitably affect the splicing accuracy of the main reinforcement. At the same time, since the steel skeleton needs to be inserted into the exposed vertical anchoring steel bars of the pier, there will inevitably be spatial conflicts between the main reinforcement and the anchoring steel bars, which will lead to installation difficulties. Therefore, it is necessary to spend time and effort on the site to adjust the position of some main reinforcements of the skeleton. Therefore, the axis position and angle of the main reinforcement at the splicing end will change accordingly, resulting in the inability to splice the straight thread sleeve that needs to connect the two normally. Since the main reinforcement of the cap beam steel skeleton has a large diameter and high rigidity, and is welded to a large number of stirrups, the main reinforcement is limited and difficult to be accurately adjusted on site, thus affecting the connection strength of the splicing end steel skeleton, and then affecting the safety and durability of the bridge. For main reinforcements with insufficient connection strength, the sleeve is generally removed and then welded, which not only costs labor and materials, but also takes up space, hinders the discharge and vibration construction of the cap beam concrete, and affects the overall quality and construction progress. Summary of the invention

[0004] Based on this, it is necessary to provide a method for manufacturing and splicing a two-segment cap beam reinforcement skeleton to overcome the defects of low work efficiency and poor splicing accuracy in the manufacturing and splicing of the existing bridge cap beam reinforcement skeleton.

[0005] The method for manufacturing and splicing a two-segment cap beam reinforcement frame includes the following steps:

[0006] Step 1: In the processing plant, the main reinforcement in the cap beam skeleton is divided into two sections, and each section is arranged on the positioning frame according to the designed spacing;

[0007] Step 2: Connect the main reinforcement in one section to the stirrups in the cap beam frame in a temporary and fixed alternating connection mode, wherein the connection mode between the main reinforcement and stirrups in the other section is opposite to the connection mode of the corresponding main reinforcement in one section;

[0008] Step 3: transport the two cap beam frames connected with the stirrups to the construction site, hoist the two cap beam frames one by one above the installation position and drop them to the installation position;

[0009] Step 4: Adjust the relative position of the two sections of the cap beam skeleton so that they are aligned, connect the corresponding main bars in the two sections of the cap beam skeleton through the sleeve, and finally fix the main bars temporarily connected to the stirrups with the corresponding stirrups one by one. The present invention uses a positioning frame to limit the position and angle of the main bars in the cap beam skeleton for welding and fixing, solves the problem of large deviations in the main bar spacing and length after the two-segment skeleton is connected, and ensures the overall quality of the skeleton splicing.

[0010] As a preferred method for manufacturing and splicing a two-section cap beam reinforcement skeleton in the present invention, in step one, the main reinforcements in the two-section cap beam skeletons both include spliced ​​ends and non-spliced ​​ends.

[0011] As a preferred method for manufacturing and splicing a two-section cap beam reinforcement skeleton in the present invention, the main reinforcements in one section of the cap beam skeleton are arranged alternately in the form of first long main reinforcements and first short main reinforcements, and the main reinforcements in another section of the cap beam skeleton corresponding to the first long main reinforcement in one section of the cap beam skeleton are the second short main reinforcements, and the main reinforcements corresponding to the first short main reinforcements are the second long main reinforcements.

[0012] As a preferred method for manufacturing and splicing a two-segment cap beam reinforcement skeleton in the present invention, the sum of the length of the first long main reinforcement and the second short main reinforcement is equal to the sum of the length of the second long main reinforcement and the first short main reinforcement.

[0013] As a preferred embodiment of the method for manufacturing and splicing a two-segment cap beam reinforcement frame in the present invention, in step one, the positioning frame includes a first positioning frame and a second positioning frame.

[0014] As a preferred method for manufacturing and splicing a two-section cap beam reinforcement frame in the present invention, when the first positioning frame is connected to one section of the cap beam frame, the non-spliced ​​end of the main reinforcement of one section of the cap beam frame abuts against the longitudinal limit of the first positioning frame, and when the second positioning frame is connected to another section of the cap beam frame, the spliced ​​end of the main reinforcement of the other section of the cap beam frame abuts against the longitudinal limit of the second positioning frame.

[0015] As a preferred method for manufacturing and splicing a two-segment cap beam reinforcement frame in the present invention, in the step three, when the two sections of the cap beam frame are hoisted one by one above the installation position and dropped to the installation position, when a spatial conflict occurs between the temporarily connected main reinforcement and the pier column anchor reinforcement, the temporary connection between the main reinforcement and the stirrups is removed, and the position is moved so that the cap beam frame drops to the installation position.

[0016] As a preferred embodiment of the method for manufacturing and splicing a two-segment cap beam reinforcement skeleton in the present invention, the temporary connection method is binding, and the fixed connection method is welding.

[0017] As a preferred method for manufacturing and splicing a two-segment cap beam reinforcement frame in the present invention, in the step four, after adjusting the relative positions of the two sections of the cap beam frame so that the two are aligned, the main reinforcement removed in the step three is moved so that it is aligned and tightened with the corresponding fixedly connected main reinforcement, and then connected using a sleeve.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention uses a positioning frame to limit the position and angle of the main reinforcement welding in the cap beam frame, thereby solving the problem of large deviations in indicators such as the main reinforcement spacing and length after the two-segment frame is connected, and ensuring the overall quality of the frame splicing.

[0020] 2. The present invention overcomes the spatial conflict between the main reinforcement of the cap beam frame and the anchoring reinforcement of the pier column during the hoisting process of the cap beam frame by temporarily connecting some of the main reinforcement in the cap beam frame in the early stage and fixing them in the later stage, thereby reducing the difficulty of hoisting construction and improving construction efficiency.

[0021] 3. The main reinforcement fixedly connected relative to the temporary main reinforcement in the present invention enables the temporary main reinforcement to be removed during the lifting process and then adjusted and connected based on the position and angle of the fixed main reinforcement as a reference. All the main reinforcements of the two sections correspond to the reference, thus solving the problem of difficulty in splicing caused by position and angle deviations between the main reinforcements and ensuring the connection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the second positioning frame in the embodiment of the present application;

[0024] Figure 2 This is a comparative schematic diagram of temporary and fixed connection of two sections of cap beam skeletons in the embodiment of the present application;

[0025] Description of reference numerals:

[0026] 1. Frame;

[0027] 2. The first positioning beam;

[0028] 3. The second positioning beam;

[0029] 4. The first long main reinforcement;

[0030] 5. The first short main reinforcement;

[0031] 6. The second longest main tendon;

[0032] 7. The second short main reinforcement;

[0033] 8. Stirrups. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central 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 a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] Example

[0041] This embodiment provides a method for manufacturing and splicing a two-segment cap beam reinforcement skeleton, which is used for pre-manufacturing and post-splicing a two-segment cap beam reinforcement skeleton, and includes a manufacturing stage and a splicing stage.

[0042] The production stage is carried out in a processing plant and includes the following steps:

[0043] Sectioning of the cap beam skeleton: According to the regulations on bridge construction, in order to ensure the quality of splicing between segments, the number of connection joints of the main reinforcement of the cap beam skeleton in the same section cannot exceed 50% of the total. Therefore, the main reinforcement in the cap beam skeleton needs to be staggered and sectioned. In this embodiment, the cap beam skeleton is divided into a first section cap beam skeleton and a second section cap beam skeleton, and the main reinforcement in each section of the cap beam skeleton is divided into a non-splicing end and a splicing end for connecting with the adjacent cap beam skeleton.

[0044] The main reinforcements in the first section of the cap beam skeleton are arranged alternately in the form of the first long main reinforcement 4 and the first short main reinforcement 5, and the second section of the cap beam skeleton is arranged alternately in the form of the second short main reinforcement 7 and the second long main reinforcement 6, that is, the first long main reinforcement 4 in the second section of the cap beam skeleton corresponds to the second short main reinforcement 7 in the second section of the cap beam skeleton, and the first short main reinforcement 5 in the second section of the cap beam skeleton corresponds to the second long main reinforcement 6 in the second section of the cap beam skeleton.

[0045] In order to ensure the consistency of the overall length of the cap beam skeleton, the sum of the lengths of the first long main reinforcement 4 and the second short main reinforcement 7 is equal to the sum of the lengths of the second long main reinforcement 6 and the first short main reinforcement 5 .

[0046] Production of cap beam frame: During the production process, different positioning frames are used according to different cap beam frames. In this embodiment, they are divided into a first positioning frame corresponding to the first section of the cap beam frame and a second positioning frame corresponding to the second section of the cap beam frame. The main reinforcement is arranged on the designated positioning frames according to the designed spacing.

[0047] The first positioning frame is a positioning frame in the prior art. When the main reinforcement in the first section of the cap beam frame is connected to the first positioning frame, in order to facilitate the subsequent connection of the second section of the cap beam frame through the sleeve, all the non-spliced ​​ends of the first long main reinforcement 4 and the first short main reinforcement 5 are flush with the longitudinal limit of the first positioning frame and are in the same plane, and the spliced ​​ends of the first long main reinforcement 4 and the first short main reinforcement 5 are in a front-to-back staggered state.

[0048] like Figure 1 As shown, the second positioning frame includes a frame body 1, in which a first positioning beam 2 and a second positioning beam 2 are arranged side by side and spaced perpendicular to the axial direction of the main reinforcement, the spliced ​​ends of all the second long main reinforcements 6 in the second section cap beam skeleton are abutted flush with the longitudinal limit position on the first positioning beam 2, and the spliced ​​ends of the second short main reinforcements 7 are abutted flush with the longitudinal limit position on the second positioning beam 3, that is, the spliced ​​ends of the second long main reinforcement 6 and the second short main reinforcement 7 are in a front-to-back staggered state, and the non-spliced ​​ends of the second long main reinforcement 6 and the second short main reinforcement 7 are ensured to be in the same plane, so as to facilitate splicing with the main reinforcement in the first section cap beam skeleton.

[0049] The main reinforcement in the first section of the cap beam frame is connected to the stirrups 8 in the first section of the cap beam frame in a temporary and fixed alternating manner, that is, the first long main reinforcement 4 is temporarily connected to the stirrups 8, and the first short main reinforcement 5 is fixedly connected to the stirrups 8, or the first long main reinforcement 4 is fixedly connected to the stirrups 8, and the first short main reinforcement 5 is temporarily connected to the stirrups 8.

[0050] The connection method between the main reinforcement in the second section of the cap beam frame and the stirrup 8 in the second section of the cap beam frame is opposite to that of the first section of the cap beam frame, that is, the second longest main reinforcement 6 is temporarily connected to the stirrup 8, and the second short main reinforcement 7 is fixedly connected to the stirrup 8, or the second longest main reinforcement 6 is fixedly connected to the stirrup 8, and the second short main reinforcement 7 is temporarily connected to the stirrup 8. Figure 2 As shown, it is ensured that the two main bars corresponding to the two cap beam skeletons are in a state of temporary connection and fixed connection. All main bars are connected to the stirrups 8 to prevent them from falling apart or falling during transportation or hoisting.

[0051] The splicing stage is carried out at the construction site and includes the following steps:

[0052] Lifting of cap beam skeleton: transport two cap beam skeletons from the processing plant to the construction site, then lift the first section of steel bar skeleton above the installation position and slowly drop it to the installation position. When the first section of steel bar skeleton drops to the top of the pier column anchor steel bar, adjust the main reinforcement axis and position of the cap beam skeleton that has spatial conflict with the pier top anchor steel bar, that is, when the temporarily connected main reinforcement has spatial conflict with the pier column anchor steel bar, remove the main reinforcement. When it has spatial conflict with the fixed main reinforcement, move the cap beam skeleton so that the conflict position is transferred to the temporarily connected main reinforcement and remove the main reinforcement to facilitate the first section of the cap beam skeleton to fall and position until it falls to the installation position on the cap beam template. Follow the same steps to lift the second section of the cap beam skeleton.

[0053] Splicing of cap beam skeleton: adjust the relative position of the two sections of cap beam skeleton so that they are aligned, move the main reinforcement removed during the lifting process so that it is aligned and tightened with the corresponding fixed main reinforcement, then use sleeves to connect them, and finally fix the main reinforcement temporarily connected to the stirrups 8 with the corresponding stirrups 8 one by one to complete the splicing.

[0054] In this embodiment, the temporary connection method is binding or other connection methods that can temporarily fix the main reinforcement to the stirrup 8, and the fixed connection method is welding.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A method for manufacturing and splicing a two-segment cap beam reinforcement frame, characterized in that: The steps include: Step 1: In the processing plant, the main reinforcement in the cap beam skeleton is divided into two sections, and each section is arranged on the positioning frame according to the designed spacing; Step 2: Connect the main reinforcement in one section to the stirrups in the cap beam frame in a temporary and fixed alternating connection mode, wherein the connection mode between the main reinforcement and stirrups in the other section is opposite to the connection mode of the corresponding main reinforcement in one section; Step 3: transport the two cap beam frames connected with the stirrups to the construction site, hoist the two cap beam frames one by one above the installation position and drop them to the installation position; Step 4: Adjust the relative positions of the two sections of the cap beam skeleton so that they are aligned, connect the corresponding main reinforcements in the two sections of the cap beam skeleton through sleeves, and finally fix the main reinforcements temporarily connected to the stirrups with the corresponding stirrups one by one.

2. The method for manufacturing and splicing a two-segment cap beam reinforcement frame according to claim 1 is characterized in that: In the step 1, the main reinforcements in the two sections of the cap beam skeleton both include spliced ​​ends and non-spliced ​​ends.

3. The method for manufacturing and splicing a two-segment cap beam reinforcement frame according to claim 2 is characterized in that: The main reinforcements in one section of the cap beam frame are arranged alternately in the form of the first long main reinforcement and the first short main reinforcement, and the main reinforcement in another section of the cap beam frame corresponds to the first long main reinforcement in one section of the cap beam frame as the second short main reinforcement, and corresponds to the first short main reinforcement as the second long main reinforcement.

4. The method for manufacturing and splicing a two-segment cap beam reinforcement frame according to claim 3 is characterized in that: The sum of the lengths of the first long main reinforcement and the second short main reinforcement is equal to the sum of the lengths of the second long main reinforcement and the first short main reinforcement.

5. The method for manufacturing and splicing a two-segment cap beam reinforcement frame according to claim 1 is characterized in that: In the step 1, the positioning frame includes a first positioning frame and a second positioning frame.

6. The method for manufacturing and splicing a two-segment cap beam reinforcement frame according to claim 5 is characterized in that: When the first positioning frame is connected to one section of the cap beam frame, the non-spliced ​​end of the main reinforcement of one section of the cap beam frame abuts against the longitudinal limit of the first positioning frame; when the second positioning frame is connected to another section of the cap beam frame, the spliced ​​end of the main reinforcement of the other section of the cap beam frame abuts against the longitudinal limit of the second positioning frame.

7. The method for manufacturing and splicing a two-segment cap beam reinforcement frame according to claim 1 is characterized in that: In the step three, when the two sections of the cap beam frame are hoisted one by one above the installation position and dropped to the installation position, if a spatial conflict occurs between the temporarily connected main reinforcement and the pier column anchoring steel bars, the temporary connection between the main reinforcement and the stirrups is removed, and the position of the cap beam frame is moved so that the cap beam frame drops to the installation position.

8. The method for manufacturing and splicing a two-segment cap beam reinforcement frame according to claim 7 is characterized in that: The temporary connection method is binding, and the fixed connection method is welding.

9. The method for manufacturing and splicing a two-segment cap beam reinforcement frame according to claim 1 is characterized in that: In the step 4, after adjusting the relative positions of the two sections of the cap beam skeleton so that the two are aligned, the main reinforcement removed in the step 3 is moved so that it is aligned and tightened with the corresponding fixed main reinforcement, and then connected using a sleeve.

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