Broken line type template supporting structure at No.0 block

Abstract

The utility model discloses a fold line type template supporting structure at a No.0 block. The bridge piers are arranged on the bridge foundation, the side supporting columns and the inner supporting columns are connected to the bridge foundation, the supporting cross beams are connected between the supporting columns and the inner supporting columns, the double-main-cross-beam assemblies and the single-main-cross-beam assemblies are connected to the upper portions of the side supporting columns and the upper portions of the inner supporting columns respectively, and the secondary longitudinal beams are connected to the upper portions of the bridge piers. The distribution beams are connected above the secondary longitudinal beams; and the bottom die is connected above the distribution beams. According to the invention, through the broken line type arrangement of the bottom die, more accurate fitting and subsequent pouring are facilitated; through the arrangement of the secondary longitudinal beams and the distribution beams, the formed component force structure is more beneficial to uniform stress under the bottom die; through the arrangement of the supporting columns, the top seat cushion piece, the double-main-cross-beam assembly and the single-main-cross-beam assembly, the overall stress under cast-in-place concrete can be guaranteed, the side columns and the inner columns correspond to different supporting components, the structure is simplified, and supporting is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and particularly relates to a 0-block broken line template support structure. Background Art

[0002] With the continuous construction of the railway transportation infrastructure network, the volume of high-speed railway bridge construction has further expanded, and new forms of bridges such as large span, large tonnage and new composite bridges have continued to emerge, which has brought new difficulties and challenges to traditional bridge construction technology. In the construction of large-span continuous beam bridges, the pre-stressing of the No. 0 block support is a key link. The construction quality of the No. 0 block is directly related to the subsequent bridge segment and the overall quality of the bridge and driving safety. When the traditional No. 0 block is cast on site, scaffolding is set up and adjusted through the adjustable support at the top; some use Bailey beams as the top support to support the bottom of the formwork; the above practices are not conducive to on-site construction, and the accuracy of fitting the bottom line of the No. 0 block is not high. Utility Model Content

[0003] The utility model provides a folding line template support structure at block 0, which is used to solve technical problems such as setting of the folding line template at block 0, setting of support columns under the template and setting of force distribution structure under the template.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A folded-line formwork support structure at block 0, comprising a bridge foundation, a bridge pier arranged on the bridge foundation, a side support column and an inner support column connected to the bridge foundation, a support beam connected between the support column and the inner support column, a double main beam assembly and a single main beam assembly respectively connected above the side support column and the inner support column, a secondary longitudinal beam connected above the bridge pier, a distribution beam connected above the secondary longitudinal beam, and a bottom formwork connected above the distribution beam;

[0006] The double main crossbeam assembly comprises a double main crossbeam sand box, a double main crossbeam base, double main crossbeam bodies respectively arranged on the double main crossbeam sand box and the double main crossbeam base, a double main crossbeam connecting rod connected between the two double main crossbeam bodies, and double main crossbeam top pieces respectively connected to the tops of the double main crossbeam bodies;

[0007] The single main crossbeam assembly comprises a single main crossbeam sand box, a single main crossbeam body connected above the single main crossbeam sand box, and a single main crossbeam top member connected above the single main crossbeam body;

[0008] The bottom mold is set in a fold line shape, and its fold line shape corresponds to the fold line shape at block No. 0.

[0009] Furthermore, the top of the side support column is directly connected to the secondary longitudinal beam and column corbels are arranged on both sides of the upper part. One side of the corbel is provided with a double main crossbeam sand box and a double main crossbeam body and a double main crossbeam top piece connected thereto; the other side of the corbel is provided with a double main crossbeam base and a double main crossbeam body and a double main crossbeam top piece connected thereto.

[0010] Furthermore, the double main cross beam body is formed by connecting two I-shaped beams, and the single main cross beam body is formed by connecting three I-shaped beams.

[0011] Furthermore, the double main crossbeam top member and the single main crossbeam top member are both right-angled triangle frames, wherein the slope of the hypotenuse corresponds to the slope of the secondary longitudinal beam.

[0012] Furthermore, the inner support column includes an inner support main column, an inner support column top plate connected to the top of the inner support main column, and an inner support column rib plate connected between the inner support column top plate and the inner support main column; a single main beam assembly is correspondingly connected to the inner support column top plate.

[0013] Furthermore, the bottoms of the side support columns and the inner support columns are fixedly connected to the column foundation through column embedded parts; the embedded parts include embedded steel plates and hooks connected to the embedded steel plates and extending into the column foundation;

[0014] Furthermore, the supporting crossbeam is connected between the side supporting column and the inner supporting column, and is also connected between the inner supporting column and the column pier or column foundation; crossbeam connectors are arranged at both ends of the supporting crossbeam, and the crossbeam connectors include end steel plates and end hook bars.

[0015] Furthermore, the length of the secondary longitudinal beam is greater than the template, and the secondary longitudinal beam is a broken line type, which includes a straight line segment and upward inclined segments on both sides of the straight line segment; the straight line segment is also connected to a top seat cushion corresponding to the top interval of the pier; the top seat cushion is a square steel piece.

[0016] The beneficial effects of the utility model are embodied in:

[0017] 1) The present invention facilitates more accurate fitting of the bottom fold line of block 0 and subsequent pouring through the fold line setting of the bottom mold;

[0018] 2) The utility model provides a secondary longitudinal beam and a distribution beam, and the force distribution structure formed is more conducive to uniform force under the bottom mold; and it is easy to implement and adjust the force formation;

[0019] 3) The utility model is conducive to ensuring the overall force under the cast-in-place concrete through the arrangement of support columns, top seat cushions, double main beam components and single main beam components. On the one hand, it is conducive to simplifying the structure and ensuring the support through the corresponding different support components of the side columns and inner columns, and it can also perform local support fine-tuning;

[0020] Other features and advantages of the utility model will be described in the subsequent description, and in part will become apparent from the description, or be understood by implementing the utility model; the main purpose and other advantages of the utility model can be realized and obtained through the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the broken line template support structure at block 0;

[0022] Figure 2 It is a schematic diagram of the side support column and its connection structure;

[0023] Figure 3 It is a schematic diagram of the double main beam assembly and its connection structure;

[0024] Figure 4 It is a schematic diagram of a single main beam assembly and its connection structure.

[0025] Figure markings: 1-bridge foundation, 2-bridge pier, 3-side support column, 4-inner support column, 41-inner support main column, 42-inner support column top plate, 43-inner support column rib, 5-support beam, 6-secondary longitudinal beam, 7-distribution beam, 8-bottom mold, 9-double main beam assembly, 91-double main beam sand box, 92-double main beam base, 93-double main beam body, 94-double main beam connecting rod, 95-double main beam top piece, 10-single main beam assembly, 101-single main beam sand box, 102-single main beam body, 103-single main beam top piece, 11-top seat cushion, 12-block No. 0, 13-column embedded parts, 14-beam connecting parts, 15-column corbel. DETAILED DESCRIPTION

[0026] Take a railway project as an example. It uses a five-span, three-fold line, asymmetric and unbalanced curved chord steel truss reinforced continuous beam structure. The 172m continuous beam is constructed by the cast-in-place method. Figures 1 to 4 As shown, the support and pouring is carried out through the broken line formwork support structure at block 0. The broken line formwork support structure at block 0 includes a bridge foundation 1, a bridge pier 2 arranged on the bridge foundation 1, a side support column 3 and an inner support column 4 connected to the bridge foundation 1, a support beam 5 connected between the support column and the inner support column 4, a double main beam assembly 9 and a single main beam assembly 10 respectively connected above the side support column 3 and the inner support column 4, a secondary longitudinal beam 6 connected above the bridge pier 2, a distribution beam 7 connected above the secondary longitudinal beam 6, and a bottom form 8 connected above the distribution beam 7;

[0027] In this embodiment, the double main crossbeam assembly 9 includes a double main crossbeam sand box 91, a double main crossbeam base 92, a double main crossbeam body 93 respectively arranged on the double main crossbeam sand box 91 and the double main crossbeam base 92, a double main crossbeam connecting rod 94 connected between the two double main crossbeam bodies 93, and a double main crossbeam top piece 95 respectively connected to the top of the double main crossbeam body 93.

[0028] The single main beam assembly 10 comprises a single main beam sand box 101, a single main beam body 102 connected to the single main beam sand box 101, and a single main beam top member 103 connected to the single main beam body 102; the bottom mold 8 is a zigzag shape, and its zigzag shape corresponds to the zigzag shape at 12 of block 0. The bottom mold 8 is made of square wood and 11.5 cm thick bamboo plywood.

[0029] In this embodiment, the top of the side support column 3 is directly connected to the secondary longitudinal beam 6 and column brackets 15 are arranged on both sides of the upper part. One side of the bracket is provided with a double main beam sand box 91 and a double main beam body 93 and a double main beam top piece 95 connected thereto; the other side of the bracket is provided with a double main beam base 92 and a double main beam body 93 and a double main beam top piece 95 connected thereto. The double main beam body 93 is formed by two I-shaped parts connected together, and the single main beam body 102 is formed by three I-shaped parts connected together. Both the double main beam top piece 95 and the single main beam top piece 103 are right-angled triangle frames, in which the slope of the hypotenuse corresponds to the slope of the secondary longitudinal beam 6.

[0030] In this embodiment, the inner support column 4 comprises an inner support main column 41, an inner support column top plate 42 connected to the top of the inner support main column 41, and an inner support column rib plate 43 connected between the inner support column top plate 42 and the inner support main column 41; the inner support column top plate 42 is correspondingly connected to the single main beam assembly 10. The bottoms of the side support column 3 and the inner support column 4 are fixedly connected to the column foundation through the column embedded parts 13; the embedded parts include embedded steel plates and hooks connected to the embedded steel plates and extending into the column foundation;

[0031] In this embodiment, the supporting beam 5 is connected between the side supporting column 3 and the inner supporting column 4, and is also connected between the inner supporting column 4 and the column pier or column foundation; beam connectors 14 are arranged at both ends of the supporting beam 5, and the beam connector 14 includes end steel plates and end hook bars.

[0032] In this embodiment, the length of the secondary longitudinal beam 6 is greater than the template, and the secondary longitudinal beam 6 is a broken line type, which includes a straight line segment and upward inclined segments on both sides of the straight line segment; the straight line segment is also connected to a top seat cushion 11 corresponding to the top interval of the pier; the top seat cushion 11 is a square steel piece.

[0033] The above description is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a technician familiar with the technical field thinks of within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A folding line template support structure at block 0, characterized in that: It comprises a bridge foundation (1), a bridge pier (2) arranged on the bridge foundation (1), a side support column (3) and an inner support column (4) connected to the bridge foundation (1), a support crossbeam (5) connected between the support column and the inner support column (4), a double main crossbeam assembly (9) and a single main crossbeam assembly (10) respectively connected above the side support column (3) and the inner support column (4), a secondary longitudinal beam (6) connected above the bridge pier (2), a distribution beam (7) connected above the secondary longitudinal beam (6), and a bottom formwork (8) connected above the distribution beam (7); The double main crossbeam assembly (9) comprises a double main crossbeam sand box (91), a double main crossbeam base (92), a double main crossbeam body (93) respectively arranged on the double main crossbeam sand box (91) and the double main crossbeam base (92), a double main crossbeam connecting rod (94) connected between the two double main crossbeam bodies (93), and a double main crossbeam top piece (95) respectively connected to the top of the double main crossbeam body (93); The single main crossbeam assembly (10) comprises a single main crossbeam sand box (101), a single main crossbeam body (102) connected above the single main crossbeam sand box (101), and a single main crossbeam top member (103) connected above the single main crossbeam body (102); The bottom mold (8) is arranged in a folded line shape, and its folded line shape corresponds to the folded line shape at block No. 0 (12).

2. A folded line formwork support structure at block 0 (12) as claimed in claim 1, characterized in that: The top of the side support column (3) is directly connected to the secondary longitudinal beam (6) and column brackets (15) are arranged on both sides of the upper part. One side of the bracket is provided with a double main crossbeam sand box (91) and a double main crossbeam body (93) and a double main crossbeam top piece (95) connected thereto; the other side of the bracket is provided with a double main crossbeam base (92) and a double main crossbeam body (93) and a double main crossbeam top piece (95) connected thereto.

3. A folding line template support structure at block 0 as claimed in claim 1, characterized in that: The double main cross beam body (93) is formed by connecting two I-shaped beams, and the single main cross beam body (102) is formed by connecting three I-shaped beams.

4. A folding line template support structure at block 0 as claimed in claim 1, characterized in that: The double main crossbeam top piece (95) and the single main crossbeam top piece (103) are both right-angled triangle frames, wherein the slope of the hypotenuse corresponds to the slope of the secondary longitudinal beam (6).

5. A folding line template support structure at block 0 as claimed in claim 1, characterized in that: The inner support column (4) comprises an inner support main column (41), an inner support column top plate (42) connected to the top of the inner support main column (41), and an inner support column rib plate (43) connected between the inner support column top plate (42) and the inner support main column (41); the inner support column top plate (42) is correspondingly connected to a single main cross beam assembly (10).

6. A folding line template support structure at block 0 as claimed in claim 1, characterized in that: The bottoms of the side support columns (3) and the inner support columns (4) are fixedly connected to the column foundation via column embedded parts (13); the embedded parts include embedded steel plates and hooks connected to the embedded steel plates and extending into the column foundation.

7. A folding line template support structure at block 0 as claimed in claim 1, characterized in that: The supporting crossbeam (5) is connected between the side supporting column (3) and the inner supporting column (4), and is also connected between the inner supporting column (4) and the column pier or column foundation; crossbeam connectors (14) are provided at both ends of the supporting crossbeam (5), and the crossbeam connector (14) comprises end steel plates and end hook bars.

8. A folding line template support structure at block 0 as claimed in claim 1, characterized in that: The secondary longitudinal beam (6) is longer than the template and is of a broken line type, comprising a straight line segment and upwardly inclined segments on both sides of the straight line segment; the straight line segment is also connected to a top seat cushion member (11) at intervals corresponding to the top of the column pier; the top seat cushion member (11) is a square steel member.

Images