External stiff framework for closure section construction of single-box continuous rigid framework and construction framework of external stiff framework

Abstract

The utility model discloses an external stiff skeleton for construction of a closure section of a single-box continuous rigid framework and a construction framework of the external stiff skeleton, and the external stiff skeleton comprises a first embedded steel part which is embedded and fixedly arranged at the top of one group of main beam structures corresponding to the closure section; the second embedded steel part is fixedly arranged at the top of the other group of main beam structures corresponding to the closure section in an embedded manner; the two ends of the connecting steel part are fixedly connected with the first embedded steel part and the second embedded steel part in a one-to-one correspondence mode. The problem that in the prior art, a stiff framework of the main beam closure section is difficult to disassemble is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway bridge engineering, and in particular to an external rigid skeleton for the construction of a single-box continuous rigid frame joint section and a construction framework thereof. Background Art

[0002] In recent years, under the Belt and Road Initiative, the scale of transportation infrastructure construction has gradually expanded. Since the investment cost of continuous rigid frame bridges is relatively lower than that of cable-stayed bridges and suspension bridges with the same span, and the investment cost of high pier structures is lower or the same as that of simply supported beam bridges under the same conditions, they are very popular.

[0003] In current continuous rigid frame bridges, the main beam is an important load-bearing component of the bridge. The process of constructing different segment main beams from both ends and joining them in the middle is called closure. The quality of the bridge closure section will directly affect the overall performance of the bridge. A rigid skeleton needs to be set for the closure section to temporarily "lock" the main beam of the closure section.

[0004] In the prior art, there are various types of rigid frames, including embedded and external types. The embedded rigid frames are arranged inside the main beam, which is not convenient for subsequent dismantling. The external rigid frames are generally welded with anchor plates and steel sections. Although it can improve the convenience of dismantling to a certain extent, the overall construction difficulty is still relatively large. Utility Model Content

[0005] To this end, the utility model provides an external rigid frame and a construction structure for the construction of a single-box continuous rigid frame joint section, so as to solve the problem of difficulty in the removal process of the rigid frame of the main beam joint section in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An external rigid skeleton for construction of a single-box continuous rigid frame joint section, comprising:

[0008] The first embedded steel part is embedded and fixed on the top of one group of main beam structures corresponding to the joint section;

[0009] The second embedded steel part is embedded and fixed on the top of another group of main beam structures corresponding to the joint section;

[0010] The connecting steel piece has two end portions which are fixedly connected to the first embedded steel piece and the second embedded steel piece in a one-to-one correspondence.

[0011] On the basis of the above technical solution, the utility model is further described as follows:

[0012] As a further solution of the utility model, the first embedded steel member includes four first embedded channel steel members vertically embedded and fixed to one group of the main beam structures;

[0013] The four first embedded channel steel members corresponding to the first embedded steel members are arranged in two groups, and a first spacing slot is reserved between two first embedded channel steel members in each group of the first embedded channel steel members.

[0014] As a further solution of the present invention, the notch ends of two of the first embedded channel steel members in each group of the first embedded channel steel members are oriented in the opposite direction to the first spacing slot position.

[0015] As a further solution of the utility model, the second embedded steel member includes four second embedded channel steel members vertically embedded and fixed to another group of the main beam structure;

[0016] The four second embedded channel steel members corresponding to the second embedded steel members are arranged in two groups, two of each group being a group, and a second spacing slot is reserved between two second embedded channel steel members in each group of the second embedded channel steel members;

[0017] The second spacing slots are arranged correspondingly to the first spacing slots in the same direction.

[0018] As a further solution of the present invention, the notch ends of two of the second embedded channel steel members in each group of the second embedded channel steel members are oriented in the opposite direction to the second spacing slot position.

[0019] As a further solution of the utility model, the connecting steel members are arranged in two groups in a horizontally aligned manner, and the two ends of each group of the connecting steel members are respectively and one by one fixedly connected to the first embedded channel steel members located on the same side of the first embedded steel members and the second embedded channel steel members located on the corresponding same side of the second embedded steel members.

[0020] As a further solution of the utility model, the notch ends of the two groups of connecting steel parts are arranged to face each other.

[0021] As a further solution of the utility model, it also includes:

[0022] A plurality of reinforcing plates are provided, and the plurality of reinforcing plates are welded and fixed at even intervals between the top sides and / or bottom sides of the two groups of connecting steel members.

[0023] A construction framework for constructing an external rigid skeleton according to the single-box continuous rigid frame joint section, comprising two sets of main beam structures corresponding to both sides of the joint section, concrete filling blocks and the external rigid skeleton;

[0024] The two groups of main beam structures respectively have an integrally formed box beam top plate layer and a box beam bottom plate layer, and the two groups of main beam structures corresponding to the slope positions of their box beam bottom plates are cast and fixed with concrete filling blocks;

[0025] The top end surface of the concrete filling block is arranged horizontally;

[0026] The external rigid skeleton is respectively embedded and assembled on the top of the box beam top plate layer of the two groups of main beam structures and the concrete filling blocks corresponding to the box beam bottom plate layers of the two groups of main beam structures.

[0027] As a further solution of the utility model, the external rigid skeleton is provided with four groups;

[0028] The four groups of external rigid frames are embedded and installed one by one on the top of the box beam top plate layer of the two groups of main beam structures and the concrete filling blocks corresponding to the box beam bottom plate layers of the two groups of main beam structures.

[0029] The utility model has the following beneficial effects:

[0030] This construction framework can effectively form an external three-section rigid skeleton structure of "first embedded steel parts + connecting steel parts + second embedded steel parts" between the two sets of main beam structures corresponding to the two sides of the bridge joint section. The overall structural system is reasonably designed, the force is clear, and it is easy to install and dismantle. It speeds up the construction progress and is safe and reliable. It provides a design idea for the cantilever casting construction of the joint section of the same type of bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for the implementation methods or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the utility model without affecting the effects and purposes that can be achieved by the utility model.

[0032] Figure 1 This is a schematic diagram of the overall front view structure of the external rigid skeleton and its construction framework for the construction of a single-box continuous rigid frame joint section provided by an embodiment of the utility model.

[0033] Figure 2 The external rigid frame and construction framework of the single-box continuous rigid frame joint section provided by the embodiment of the utility model correspond to Figure 1 Schematic diagram of the cross-sectional structure at BB in the middle.

[0034] Figure 3 The external rigid frame and construction framework of the single-box continuous rigid frame joint section provided by the embodiment of the utility model correspond to Figure 1 Schematic diagram of the structure viewed from above at CC in the middle.

[0035] Figure 4 The external rigid frame and construction framework of the single-box continuous rigid frame joint section provided by the embodiment of the utility model correspond to Figure 1 Schematic diagram of the top view of the structure at DD in the middle.

[0036] Figure 5 The external rigid frame and construction framework of the single-box continuous rigid frame joint section provided by the embodiment of the utility model correspond to Figure 1 Schematic diagram of the cross-sectional structure at FF.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] Main beam structure 1; concrete filling block 2; first embedded steel part 3; second embedded steel part 4; connecting steel part 5; reinforcement plate 6. DETAILED DESCRIPTION

[0039] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships shall be deemed to be within the scope of the present invention without substantially changing the technical content.

[0041] like Figures 1 to 5 As shown, the embodiment of the utility model provides an external rigid skeleton and construction framework for the construction of a single-box continuous rigid frame joint section, wherein the external rigid skeleton includes a first embedded steel part 3, a second embedded steel part 4, a connecting steel part 5 and a reinforcing plate 6, which is used to effectively form an external three-section rigid skeleton structure of "first embedded steel part 3 + connecting steel part 5 + second embedded steel part 4" between two groups of main beam structures 1 corresponding to the two sides of the bridge joint section. The overall structural system is reasonably designed, the force is clear, and the installation and removal operations are easy to implement, which speeds up the construction progress, is safe and reliable, and provides a reference for the cantilever casting construction of the joint section of the same type of bridges, and provides a design idea for similar construction. The specific settings are as follows:

[0042] Please refer to Figures 1 to 5The first embedded steel part 3, the second embedded steel part 4 and the connecting steel part 5 are all set to [36 channel steel parts, and the reinforcing plate 6 is set to Q235 steel plate parts.

[0043] The first embedded steel parts 3 and the second embedded steel parts 4 are respectively embedded and fixed in two groups of main beam structures 1 corresponding to both sides of the bridge construction joint section; specifically, the first embedded steel parts 3 include four first embedded channel steel parts vertically embedded and fixed to one group of the main beam structures 1, and the second embedded steel parts 4 include four second embedded channel steel parts vertically embedded and fixed to the other group of the main beam structures 1; and the four first embedded channel steel parts corresponding to the first embedded steel parts 3 are arranged in two groups, and the notch ends of the two first embedded channel steel parts in each group are opposite to each other. The first embedded channel steel members are arranged in the same direction, and a first spacing slot is reserved between two of the first embedded channel steel members in each group; the four second embedded channel steel members corresponding to the second embedded channel steel members 4 are arranged in two groups, two of each, and the notch ends of the two second embedded channel steel members in each group of the second embedded channel steel members are arranged in opposite directions, and a second spacing slot is reserved between the two second embedded channel steel members in each group of the second embedded channel steel members; the second spacing slots and the first spacing slots are arranged in the same direction corresponding to each other, so as to utilize the second spacing slots and the first spacing slots as the installation basis of the connecting steel member 5.

[0044] Please continue to refer to Figures 1 to 5 There are two groups of connecting steel members 5 arranged in a horizontal alignment, and the notch ends of the two groups of connecting steel members 5 are arranged in a direction facing each other, and the two ends of each group of connecting steel members 5 are respectively corresponding to the first embedded channel steel members on the same side of the first embedded steel members 3 and the second embedded channel steel members on the corresponding same side of the second embedded steel members 4, and are welded and fixedly connected to each other, so as to effectively realize the joint connection of the two groups of main beam structures 1 by using the connecting steel members 5.

[0045] As a preferred solution of this embodiment, a plurality of groups of reinforcing plates 6 are welded and fixed evenly and spacedly between the top sides and / or bottom sides of the two groups of connecting steel parts 5, so as to further significantly improve the overall stability of the rigid frame through the plurality of groups of reinforcing plates 6, thereby enhancing the functional stability and practicality.

[0046] Please continue to refer to Figures 1 to 4 The embodiment of the utility model also provides a construction framework of an external rigid frame for the construction of a single-box continuous rigid frame joint section, including two groups of main beam structures 1 corresponding to the two sides of the bridge construction joint section, concrete filling blocks 2 and the external rigid frame.

[0047] Specifically, the two groups of main beam structures 1 respectively have an integrally formed box beam top plate layer and a box beam bottom plate layer, and the two groups of main beam structures 1 are cast and fixed with the concrete filling blocks 2 at the sloped positions corresponding to their box beam bottom plates, and the top surfaces of the concrete filling blocks 2 are horizontally arranged to effectively avoid damage to the drainage channels at the bottom; four groups of the external rigid skeletons are arranged, and the four groups of the external rigid skeletons are respectively buried and assembled at the tops of the box beam top plates of the two groups of main beam structures 1 and the concrete filling blocks 2 corresponding to the box beam bottom plates of the two groups of main beam structures 1; the external rigid skeleton construction structure formed as above has achieved good results in construction safety, cost and efficiency.

[0048] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An external rigid skeleton for the construction of a single-box continuous rigid frame joint section, characterized in that: include: The first embedded steel part is embedded and fixed on the top of one group of main beam structures corresponding to the joint section; The second embedded steel part is embedded and fixed on the top of another group of main beam structures corresponding to the joint section; The connecting steel piece has two end portions which are fixedly connected to the first embedded steel piece and the second embedded steel piece in a one-to-one correspondence.

2. The external rigid skeleton for construction of a single-box continuous rigid frame joint section according to claim 1 is characterized in that: The first embedded steel member comprises four first embedded channel steel members vertically embedded and fixed to one group of the main beam structures; The four first embedded channel steel members corresponding to the first embedded steel members are arranged in two groups, and a first spacing slot is reserved between two first embedded channel steel members in each group of the first embedded channel steel members.

3. The external rigid skeleton for construction of a single-box continuous rigid frame joint section according to claim 2 is characterized in that: The notch ends of two of the first embedded channel steel members in each group of the first embedded channel steel members are both oriented in the opposite direction to the first spacing slot position.

4. The external rigid skeleton for construction of a single-box continuous rigid frame joint section according to claim 2 is characterized in that: The second embedded steel member comprises four second embedded channel steel members vertically embedded and fixed to another group of the main beam structure; The four second embedded channel steel members corresponding to the second embedded steel members are arranged in two groups, two of each group being a group, and a second spacing slot is reserved between two second embedded channel steel members in each group of the second embedded channel steel members; The second spacing slots are arranged correspondingly to the first spacing slots in the same direction.

5. The external rigid skeleton for construction of a single-box continuous rigid frame joint section according to claim 4 is characterized in that: The notch ends of two of the second embedded channel steel members in each group of the second embedded channel steel members are both oriented in the opposite direction to the second spacing slot position.

6. The external rigid skeleton for construction of a single-box continuous rigid frame joint section according to claim 4 is characterized in that: The connecting steel members are arranged in two groups in a horizontally aligned manner, and the two ends of each group of the connecting steel members are respectively fixedly connected to the first embedded channel steel members located on the same side of the first embedded steel members and the second embedded channel steel members located on the corresponding same side of the second embedded steel members.

7. The external rigid skeleton for construction of a single-box continuous rigid frame joint section according to claim 6 is characterized in that: The notch ends of the two groups of connecting steel members are arranged to face each other.

8. The external rigid skeleton for construction of a single-box continuous rigid frame joint section according to claim 6 is characterized in that: Also includes: A plurality of reinforcing plates are provided, and the plurality of reinforcing plates are welded and fixed at even intervals between the top sides and / or bottom sides of the two groups of connecting steel members.

9. A construction framework for an external rigid skeleton for construction of a single-box continuous rigid frame joint section according to any one of claims 1 to 8, characterized in that: It comprises two sets of main beam structures corresponding to the two sides of the joint section, concrete filling blocks and the external rigid skeleton according to any one of claims 1 to 8; The two groups of main beam structures respectively have an integrally formed box beam top plate layer and a box beam bottom plate layer, and the two groups of main beam structures corresponding to the slope positions of their box beam bottom plates are cast and fixed with concrete filling blocks; The top end surface of the concrete filling block is arranged horizontally; The external rigid skeleton is respectively embedded and assembled on the top of the box beam top plate layer of the two groups of main beam structures and the concrete filling blocks corresponding to the box beam bottom plate layers of the two groups of main beam structures.

10. The construction framework of the external rigid skeleton for the construction of the single-box continuous rigid frame joint section according to claim 9 is characterized in that: The external rigid skeleton is provided with four groups; The four groups of external rigid frames are embedded and installed one by one on the top of the box beam top plate layer of the two groups of main beam structures and the concrete filling blocks corresponding to the box beam bottom plate layers of the two groups of main beam structures.

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