Temporary consolidation device for continuous beam zero block and main pier

Abstract

The utility model relates to a temporary consolidation device for a continuous beam zero block and a main pier. The temporary consolidation device is used for connecting the main pier and the zero block above the main pier. Comprising a temporary concrete buttress and a floor type steel pipe cylinder temporary support, the temporary concrete buttress is arranged at the top of a main pier and supports the bottom of a zero block, and threaded steel bars which are vertically arranged and embedded in the zero block and the main pier respectively are embedded in the temporary concrete buttress; at least one temporary concrete buttress is arranged on each of the left and right sides of the top of the main pier; the left side and the right side of the main pier are each provided with a floor type steel pipe cylinder temporary support, each floor type steel pipe cylinder temporary support comprises at least one steel pipe and a temporary supporting frame, the steel pipes are vertically arranged, the bottoms of the steel pipes are fixed, the tops of the steel pipes are connected with temporary anchoring steel bars, and the upper half sections of the temporary anchoring steel bars are embedded in the zero block; the temporary supporting frame is connected to the side wall of the steel pipe and the side wall of the main pier and is supported at the bottom of the zero block.

Description

Technical Field

[0001] This utility model relates to the technical field of continuous beam construction, specifically to a temporary consolidation device for the zero block of a continuous beam and the main pier. Background Technology

[0002] With the rapid development of transportation infrastructure construction such as highways and municipal works, continuous beam bridges are widely used due to their advantages such as strong span capacity, structural stability, fast construction speed, aesthetically pleasing structure, and low economic cost. In the construction of continuous beam bridges, the zero block, as the starting point of cantilever construction, makes its temporary consolidation technology particularly important. The main purpose of temporary consolidation is to resist unbalanced lever arms and withstand vertical reaction forces during construction. Ensuring the stability of the bridge structure and construction safety makes the temporary consolidation construction of the zero block a challenging problem. Utility Model Content

[0003] In order to solve one or more technical problems existing in the prior art, this utility model provides a temporary consolidation device for the zero block of a continuous beam and the main pier.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A temporary consolidation device for the zero block of a continuous beam and the main pier, used to connect the main pier and the zero block above the main pier; including temporary concrete supports and ground-mounted steel pipe temporary supports, the temporary concrete supports are set on the top of the main pier and support the bottom of the zero block, the temporary concrete supports are pre-embedded with vertically arranged threaded steel bars respectively pre-embedded in the zero block and the main pier, at least one temporary concrete support is provided on each of the left and right sides of the top of the main pier; a ground-mounted steel pipe temporary support is provided on each of the left and right sides of the main pier, the ground-mounted steel pipe temporary support includes at least one steel pipe and a temporary support frame, the steel pipe is arranged vertically and fixed at the bottom, concrete is poured into the steel pipe, the top of the steel pipe is connected with temporary anchor steel bars, the upper half of the temporary anchor steel bars is pre-embedded in the zero block, the temporary support frame is connected to the side wall of the steel pipe and the side wall of the main pier and supports the bottom of the zero block; two temporary concrete supports are provided on each of the left and right sides of the top of the main pier.

[0005] The beneficial effects of this utility model are as follows: The temporary consolidation device of this utility model is used to rigidly connect the zero-block beam segment to the bridge pier during cantilever casting, preventing displacement or deformation of the zero-block beam segment during cantilever casting, thereby ensuring the overall stability of the bridge structure and construction safety. This utility model optimizes the structural form and reduces the weight of the support frame through structural stress modeling analysis, achieving lightweight, efficient, safe, and convenient installation and dismantling.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, at least two rows of threaded steel bars are pre-embedded in the temporary concrete support, each row of threaded steel bars including multiple threaded steel bars arranged at intervals; multiple transverse stirrups are also pre-embedded in the temporary concrete support.

[0008] The beneficial effect of adopting the above-mentioned further scheme is that by setting at least two rows of threaded steel bars and multiple transverse stirrups, the structural strength and stability of the temporary concrete support are improved.

[0009] Furthermore, a transversely arranged steel mesh is tied to the threaded steel bars pre-embedded in the zero block.

[0010] Furthermore, the outer wall of the main pier is provided with bracket embedded parts and buttress embedded parts. The ground-mounted steel pipe temporary support includes two steel pipes and a temporary support frame. The temporary support frame includes brackets, buttresses and a frame. Each steel pipe is provided with a bracket support plate. The brackets are set on the bracket support plates of the two steel pipes and are fixedly connected to the bracket embedded parts. One end of the buttress is fixed to the steel pipe, and the other end is fixed to the buttress embedded parts. The frame is installed on the brackets and supports the top of the zero block.

[0011] The beneficial effect of adopting the above-mentioned further solution is that by setting bracket embedded parts and wall embedded parts, steel pipes and brackets can be effectively and stably supported and connected.

[0012] Furthermore, the bracket extends to the left and right, and the bracket is provided with multiple crossbeams extending to the front and back. The rack extends to the left and right, and there are multiple racks arranged at intervals in the front and back direction.

[0013] Furthermore, the crossbeam is supported on the bracket by demolding pads, and the bracket is connected to the steel pipe from below by diagonal braces.

[0014] Furthermore, the lower half of the temporary anchoring steel bar is embedded in the concrete of the steel pipe.

[0015] Furthermore, the bottom of the steel pipe is fixed with a column base embedded part.

[0016] Furthermore, the two temporary concrete supports on the left and the two temporary concrete supports on the right are arranged in a one-to-one correspondence in the left-right direction.

[0017] Furthermore, a steel pipe is installed on each of the left and right sides of a set of temporary concrete supports.

[0018] This utility model adopts a temporary consolidation structure consisting of an internal fine-rolled threaded steel concrete pier (temporary concrete support) and an external ground-mounted steel pipe core tube support (ground-mounted steel pipe tube temporary support). This structure can effectively solve the problems of unbalanced stress in continuous beams, ensure the construction safety of the zero block, improve construction quality, and accelerate the construction progress.

[0019] The temporary consolidation device for the zero block of a continuous beam offers numerous benefits in bridge construction, including enhanced structural stability, improved construction safety, easier construction control, facilitated system conversion, and significant economic benefits. These effects collectively ensure the smooth progress of bridge construction and the reliable guarantee of final quality. Specific effects are as follows:

[0020] 1. Enhanced structural stability. The temporary consolidation device rigidly connects the main pier and the zero block during cantilever casting, significantly enhancing the overall structural stability. This rigid connection can withstand unbalanced bending moments or torques that may occur during construction, ensuring the safety of the bridge during the construction phase.

[0021] 2. Improved Construction Safety. Temporary consolidation effectively controls bridge deformation and displacement during construction, thereby reducing construction risks. Furthermore, it provides a more stable and safer working environment for construction workers, contributing to improved construction efficiency and quality.

[0022] 3. Facilitates construction control. The temporary consolidation allows for more effective control and management of various loads and deformations during construction. This helps construction personnel to more accurately grasp the bridge's construction status, promptly identify problems, and take corresponding adjustment measures to ensure the smooth progress of the construction process.

[0023] 4. Facilitates system transition. During bridge construction, temporary consolidation can serve as a transitional structure for bridge system transformation. As construction progresses and the bridge gradually forms a permanent structure, the temporary consolidation can be easily removed or converted, allowing the bridge to smoothly transition to its final stress state.

[0024] 5. Significant economic benefits. Although temporary consolidation requires certain material and construction costs, its role in improving construction efficiency, reducing construction risks, and ensuring bridge quality is undeniable. Therefore, in the long run, the implementation of temporary consolidation can bring significant economic and social benefits. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main structure of the temporary consolidation device between the zero block of the continuous beam and the main pier of this utility model.

[0026] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;

[0027] Figure 3 This is a schematic diagram of the planar structure of the temporary consolidation device between the zero block of the continuous beam and the main pier of this utility model.

[0028] Figure 4 This is a schematic diagram of the internal steel reinforcement structure of the temporary concrete support pier of this utility model. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the structure connecting the temporary concrete support pier of this utility model with the zero block and the main pier;

[0030] Figure 6 This is a schematic diagram of the internal steel reinforcement structure of the temporary concrete support pier of this utility model. Figure 2 .

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Main pier; 11. Bracket embedded parts; 12. Buttress embedded parts;

[0033] 2. Block No. 0; 3. Temporary concrete support; 31. Threaded steel bar;

[0034] 4. Steel pipe; 41. Bracket support plate; 42. Column base embedded parts; 43. Temporary anchoring steel bars;

[0035] 5. Steel mesh; 6. Horizontal stirrups;

[0036] 7. Bracket; 71. Wall support; 72. Frame; 73. Horizontal beam; 74. Demolding pad; 75. Diagonal brace. Detailed Implementation

[0037] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0038] like Figures 1-6As shown in this embodiment, a temporary consolidation device for connecting the zero block of a continuous beam to the main pier is used to connect the main pier 1 and the zero block 2 above the main pier 1. It includes a temporary concrete support 3 and a ground-mounted steel pipe temporary support. The temporary concrete support 3 is installed on the top of the main pier 1 and supports the bottom of the zero block 2. Vertically arranged threaded steel bars 31 are pre-embedded in the temporary concrete support 3, respectively embedded in the zero block 2 and the main pier 1. At least one temporary concrete support 31 is provided on each of the left and right sides of the top of the main pier 1. Concrete piers 3; A ground-mounted temporary steel pipe support is provided on each of the left and right sides of the main pier 1. Each ground-mounted temporary steel pipe support includes at least one steel pipe 4 and a temporary support frame. The steel pipe 4 is vertically arranged and fixed at the bottom. Concrete is poured inside the steel pipe 4. A temporary anchoring steel bar 43 is connected to the top of the steel pipe 4. The upper half of the temporary anchoring steel bar 43 is embedded in block 2. The temporary support frame is connected to the side wall of the steel pipe 4 and the side wall of the main pier 1 and supports the bottom of block 2. Two temporary concrete piers 3 are provided on each of the left and right sides of the top of the main pier 1.

[0039] like Figures 1-3 , Figure 5 and Figure 6 As shown, in this embodiment, at least two rows of threaded steel bars 31 are pre-embedded in the temporary concrete support 3, each row of threaded steel bars 31 including multiple threaded steel bars 31 arranged at intervals; the temporary concrete support 3 also has multiple transverse stirrups 6 arranged at intervals. By setting at least two rows of threaded steel bars and multiple transverse stirrups, the structural strength and stability of the temporary concrete support 3 are improved.

[0040] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, a horizontally arranged steel mesh 5 is tied to the threaded steel bar 31 embedded in the zero block 2. The steel mesh 5 is embedded in the zero block 2.

[0041] like Figure 1 As shown, in this embodiment, the outer wall of the main pier 1 is provided with a bracket embedded part 11 and a buttress embedded part 12. The ground-mounted steel pipe temporary support includes two steel pipes 4 and a temporary support frame. The temporary support frame includes a bracket 7, a buttress 71, and a frame 72. Each steel pipe 4 is provided with a bracket support plate 41. The bracket 7 is set on the bracket support plate 41 of the two steel pipes and is fixedly connected to the bracket embedded part 11. One end of the buttress 71 is fixed to the steel pipe 4, and the other end is fixed to the buttress embedded part 12. The frame 72 is installed on the bracket 7 and supports the top of the zero block 2. By setting the bracket embedded part and the buttress embedded part, the steel pipes and brackets can be effectively and stably supported and connected.

[0042] like Figures 1-3 As shown, in this embodiment, the bracket 7 extends left and right, and multiple crossbeams 73 extend front and back on the bracket 7. The frame 72 extends left and right, and there are multiple frames 72 arranged at intervals in the front and back direction. The crossbeams 73 are supported on the bracket 7 by demolding pads 74, and the lower part of the bracket 7 is connected to the steel pipe 4 by diagonal braces 75.

[0043] like Figure 1 and Figure 3 As shown, in this embodiment, concrete is poured into the steel pipe 4, and the lower half of the temporary anchoring steel bar 43 is embedded in the concrete of the steel pipe 4.

[0044] like Figure 1 As shown, the bottom of the steel pipe 4 in this embodiment is fixed with a column foot embedded part 42.

[0045] like Figure 3 As shown, in this embodiment, two temporary concrete supports 3 are provided on the top left and right sides of the main pier 1. The two temporary concrete supports 3 on the left and the two temporary concrete supports 3 on the right are arranged in a one-to-one correspondence in the left and right directions.

[0046] like Figure 3 As shown, in this embodiment, a steel pipe 4 is provided on each of the left and right sides of a set of temporary concrete supports 3.

[0047] In this embodiment, the temporary concrete support 3 is set on top of the main pier 1 to bear the vertical support reaction force corresponding to the maximum unbalanced moment at the mid-support point. Each temporary concrete support 3 has 44 φ32 fine-rolled threaded steel bars embedded on one side of the pier top and the box girder. Two layers of longitudinal and transverse steel mesh are required at the junction of the continuous beam box and the temporary concrete support 3. Transverse stirrups are set inside the temporary concrete support. The temporary concrete support is mainly cast with C50 concrete.

[0048] The temporary consolidation device in this embodiment is used to rigidly connect the zero-block beam segment to the pier during cantilever casting, preventing displacement or deformation of the zero-block beam segment during cantilever casting, thereby ensuring the overall stability of the bridge structure and construction safety. This invention optimizes the structural form and reduces the weight of the support frame through structural stress modeling and analysis, achieving lightweight, efficient, safe, and easy-to-install / dismantle results.

[0049] This embodiment also provides a construction method for the temporary consolidation device between the zero block of the continuous beam and the main pier, including the following steps:

[0050] S1. First, construct the main pier 1. Embed threaded steel bars 31 at the top of the main pier 1. Tie horizontal stirrups 6 on the threaded steel bars 31 and make a temporary support pier formwork. Pour concrete in the temporary support pier formwork to form a temporary concrete support pier 3. The upper end of the threaded steel bars 31 extends out of the temporary concrete support pier 3.

[0051] S2, fix the bottom of the steel pipe 4 and connect the top to the temporary anchoring steel bar 43;

[0052] S3, erect temporary support frames, and connect the temporary support frames to the side walls of steel pipe 4 and the side walls of main pier 1 respectively;

[0053] S4. Erect the template for block 2 and pour concrete to form block 2, so that the upper end of the threaded steel bar 31 and the upper half of the temporary anchoring steel bar 43 are embedded in block 2.

[0054] The core of the construction method in this embodiment is to use four steel pipes to tie together the structure and resist the unbalanced moment during the continuous beam cantilever construction. The embedded parts at the column bases of the steel pipe core tube, the embedded parts on the pier body's buttresses, and the embedded parts of the brackets need to be precisely positioned to ensure that there is no misalignment during the installation of the support. The slope angle of the slope-adjusting support must be strictly processed according to the longitudinal slope of the beam bottom in the construction design drawings to avoid angle bending during the later construction of the cantilever section. The entire temporary support has many components; attention must be paid to welding quality to ensure weld quality and structural safety. The overall temporary consolidation is assembled and welded from multiple components. After construction, the entire structure needs to be pre-stressed to eliminate inelastic deformation and ensure structural stability. During the construction of the pier top, attention must be paid to the embedded depth, spacing, and planar position of the precision-rolled threaded steel bars of the temporary concrete supports to ensure the construction quality and structural safety of the temporary supports.

[0055] The construction method in this embodiment adopts a temporary consolidation structure of internal fine-rolled threaded steel concrete piers (temporary concrete supports) + external ground-mounted steel pipe core tube support (ground-mounted steel pipe tube temporary support). This can effectively solve the characteristics of unbalanced stress in continuous beams, ensure the construction safety of the zero block, improve construction quality, and accelerate the construction progress.

[0056] In the description of this utility model, 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., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] Furthermore, 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 number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A temporary consolidation device for connecting the zero block of a continuous beam to the main pier, used to connect the main pier and the zero block above the main pier; characterized in that, The system includes temporary concrete supports and ground-mounted steel pipe temporary supports. The temporary concrete supports are located on top of the main pier and support the bottom of the zero block. Vertically arranged threaded steel bars are pre-embedded in the temporary concrete supports and are also pre-embedded in the zero block and the main pier. At least one temporary concrete support is provided on each of the left and right sides of the top of the main pier. Each of the left and right sides of the main pier has a ground-mounted steel pipe temporary support, which includes at least one steel pipe and a temporary support frame. The steel pipe is vertically arranged and fixed at the bottom. Concrete is poured into the steel pipe, and temporary anchoring steel bars are connected to the top of the steel pipe. The upper half of the temporary anchoring steel bars is pre-embedded in the zero block. The temporary support frame is connected to the side wall of the steel pipe and the side wall of the main pier and supports the bottom of the zero block. Two temporary concrete supports are provided on each of the left and right sides of the top of the main pier.

2. The temporary consolidation device for the zero block of a continuous beam and the main pier according to claim 1, characterized in that, The temporary concrete support is pre-embedded with at least two rows of threaded steel bars, each row of threaded steel bars including multiple threaded steel bars arranged at intervals; the temporary concrete support is also pre-embedded with multiple transverse stirrups arranged at intervals.

3. The temporary consolidation device for the zero block of a continuous beam and the main pier according to claim 1, characterized in that, A transversely arranged steel mesh is tied to the threaded steel bars embedded in the zero block.

4. The temporary consolidation device for the zero block of a continuous beam and the main pier according to claim 1, characterized in that, The outer wall of the main pier is provided with bracket embedded parts and buttress embedded parts. The ground-mounted steel pipe temporary support includes two steel pipes and a temporary support frame. The temporary support frame includes brackets, buttresses and a frame. Each steel pipe is provided with a bracket support plate. The brackets are set on the bracket support plates of the two steel pipes and are fixedly connected to the bracket embedded parts. One end of the buttress is fixed to the steel pipe and the other end is fixed to the buttress embedded parts. The frame is installed on the brackets and supports the top of the zero block.

5. The temporary consolidation device for the zero block of a continuous beam and the main pier according to claim 4, characterized in that, The bracket extends to the left and right, and multiple crossbeams extend to the front and back on the bracket. The rack extends to the left and right, and there are multiple racks arranged at intervals in the front and back direction.

6. The temporary consolidation device for the zero block of a continuous beam and the main pier according to claim 5, characterized in that, The crossbeam is supported on the bracket by demolding pads, and the bracket is connected to the steel pipe by diagonal bracing.

7. The temporary consolidation device for the zero block of a continuous beam and the main pier according to claim 1, characterized in that, The lower half of the temporary anchoring steel bar is embedded in the concrete of the steel pipe.

8. The temporary consolidation device for the zero block of a continuous beam and the main pier according to claim 1, characterized in that, The bottom of the steel pipe is fixed with column base embedded parts.

9. The temporary consolidation device for the zero block of a continuous beam and the main pier according to claim 1, characterized in that, The two temporary concrete supports on the left and the two temporary concrete supports on the right are arranged in a one-to-one correspondence in the left-right direction.

10. The temporary consolidation device for the zero block of a continuous beam and the main pier according to claim 9, characterized in that, A steel pipe is installed on each of the left and right sides of a set of temporary concrete supports.

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