Adjustable cast-in-place support for stay cable anchoring block of concrete girder

Abstract

The utility model discloses an adjustable cast-in-place support for a stay cable anchoring block of a concrete girder. The utility model relates to a side formwork truss, an adjustable truss and a connecting system. The adjustable truss is composed of a longitudinal beam, an adjustable supporting rod, an inclined rod, a longitudinal beam lug plate, an inclined rod lug plate and a pin shaft. Or the adjustable truss is composed of a longitudinal beam, an adjustable supporting rod, a vertical rod, an inclined rod, a longitudinal beam lug plate, an inclined rod lug plate and a pin shaft. The utility model has the advantages that: 1, the adjustable truss is combined with the hanging basket, and is supported on the side form truss, so that the adaptability and the stability are high, the adjustable truss can flexibly adjust the size and the shape according to the construction requirements to adapt to stay cable anchoring blocks with different angles, the construction efficiency and the flexibility are improved, and the construction cost is reduced; the construction difficulty and cost are reduced; compared with a traditional scaffold, repeated mounting and dismounting are not needed, and the construction efficiency is improved; and 3, compared with a temporary supporting structure, repeated cutting and welding adjustment are not needed, and the stability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field especially is related to a kind of adjustable concrete main girder cable-stayed cable anchorage block cast-in-place support. BACKGROUND

[0002] In cable-stayed bridge construction, the construction of cable anchorage block is crucial, directly affecting the safety and stability of the bridge. Since the angle, shape and size of the anchorage block of different segments of cable-stayed bridge are different, traditional scaffolding or temporary support structure is often used as cast-in-place support in China. However, these methods have obvious shortcomings.

[0003] The structure of scaffolding is complex, and it takes time and effort to build and dismantle, especially in high-altitude operations, which is difficult and dangerous. At the same time, repeated installation and dismantling of scaffolding increases cost and prolongs construction period.

[0004] Temporary support structure needs to be frequently cut, welded and adjusted to adapt to anchorage blocks of different shapes, sizes and angles, making it difficult to control construction precision. In addition, the stability and load-bearing capacity of temporary support structure are limited, which is difficult to meet the needs of large anchorage blocks.

[0005] Waste of materials and environmental pollution are also significant problems of traditional scaffolding or temporary support structure. The use of a large amount of steel and wood not only has high cost, but also is difficult to reuse after dismantling, causing burden to the environment.

[0006] Therefore, it is urgent to develop an adjustable concrete main girder cable-stayed cable anchorage block cast-in-place support and its construction method to simplify construction process, improve construction precision and efficiency, reduce cost and reduce environmental impact. SUMMARY

[0007] The utility model aims at providing an adjustable concrete main girder cable-stayed cable anchorage block cast-in-place support with high efficiency, good stability, simple structure, convenient operation, high load-bearing capacity and excellent adjustability and flexibility.

[0008] The utility model is realized as follows:

[0009] An adjustable concrete main girder cable-stayed cable anchorage block cast-in-place support is characterized by comprising: side formwork trusses, adjustable trusses and connecting systems, a plurality of vertically placed side formwork trusses placed in a matrix are supported on the hanging basket outer sliding beam, longitudinal beams are installed at the top ends of the plurality of vertically placed side formwork trusses at intervals, and connecting systems are installed between adjacent longitudinal beams; connecting systems are installed between adjacent inclined rods on the same side; and a formwork for pouring anchorage blocks is arranged on the adjustable trusses.

[0010] Further, the adjustable truss is composed of longitudinal beams, adjustable struts, vertical rods, diagonal rods, longitudinal beam lugs, diagonal rod lugs and pin shafts; four longitudinal beam lugs are installed on the upper surface of each longitudinal beam at intervals, the bottom end of the left diagonal rod is connected with the left vertical rod through a pin shaft and the pin hole of the left vertical rod, the bottom end of the left adjustable strut is hinged with the longitudinal beam through a pin shaft and the leftmost longitudinal beam lug, the top end of the left adjustable strut is hinged with the left diagonal rod through a pin shaft and the diagonal rod lug at the bottom of the left diagonal rod; the bottom end of the right diagonal rod is connected with the right vertical rod through a pin shaft and the pin hole of the right vertical rod, the bottom end of the right adjustable strut is hinged with the longitudinal beam through a pin shaft and the rightmost longitudinal beam lug, the top end of the right adjustable strut is hinged with the right diagonal rod through a pin shaft and the diagonal rod lug at the bottom of the right diagonal rod, and the upper surfaces of the two diagonal rods and the middle upper surface of the longitudinal beam are provided with templates for pouring anchor blocks.

[0011] Further, the adjustable truss is composed of longitudinal beams, adjustable struts, vertical rods, diagonal rods, longitudinal beam lugs, diagonal rod lugs and pin shafts; four longitudinal beam lugs are installed on the upper surface of each longitudinal beam at intervals, the bottom end of the left diagonal rod is connected with the left vertical rod through a pin shaft and the pin hole of the left vertical rod, the bottom end of the left adjustable strut is hinged with the longitudinal beam through a pin shaft and the leftmost longitudinal beam lug, the top end of the left adjustable strut is hinged with the left diagonal rod through a pin shaft and the diagonal rod lug at the bottom of the left diagonal rod; the bottom end of the right diagonal rod is connected with the right vertical rod through a pin shaft and the pin hole of the right vertical rod, the bottom end of the right adjustable strut is hinged with the longitudinal beam through a pin shaft and the rightmost longitudinal beam lug, the top end of the right adjustable strut is hinged with the right diagonal rod through a pin shaft and the diagonal rod lug at the bottom of the right diagonal rod, and the upper surfaces of the two diagonal rods and the middle upper surface of the longitudinal beam are provided with templates for pouring anchor blocks.

[0012] Further, the adjustable strut is composed of a middle steel pipe and two end screw rods, and one end of the screw rod is screwed into the middle steel pipe in a thread connection direction.

[0013] Further, a stiffening plate is fixedly welded at the connection between the vertical rod and the longitudinal beam.

[0014] Further, the connection system is arranged in a Z shape.

[0015] Further, the longitudinal beam adopts a 16 type steel; the connection system adopts an ∠50*5 equal limb angle steel; the adjustable strut adopts a φ45*3.5mm steel pipe; the screw rod is φ45mm, and the adjustable range of the screw rod is ±50mm; and the diagonal rod adopts a 28 type steel.

[0016] The utility model has the following advantages:

[0017] 1. This utility model adopts an adjustable truss combined with a hanging basket structure, and is supported on the side formwork truss by the adjustable truss. Therefore, it has strong adaptability and high stability. The adjustable truss can flexibly adjust its size and shape according to construction needs to adapt to the cable anchor blocks at different angles, which improves construction efficiency and flexibility and reduces construction difficulty and cost.

[0018] 2. Compared with traditional scaffolding, this utility model eliminates the need for repeated installation and dismantling, reducing construction costs, improving construction efficiency, and without impacting the environment.

[0019] 3. Compared with temporary support structures, this utility model does not require repeated cutting, welding and adjustment, and has a simple structure and good stability. Attached Figure Description

[0020] Figure 1 This is an elevation view of the first type of cast-in-place anchor block support of this utility model;

[0021] Figure 2 This is a cross-sectional view of the first type of cast-in-place anchor block support of this utility model;

[0022] Figure 3 This is an elevation view of the second type of cast-in-place anchor block support of this utility model;

[0023] Figure 4 This is a side view of the second type of cast-in-place anchor block support of this utility model;

[0024] Figure 5 This is an elevation view of the first adjustable truss of this utility model;

[0025] Figure 6 This is an elevation view of the first adjustable truss of this utility model;

[0026] Figure 7 This is a side view of the second type of adjustable truss of this utility model;

[0027] Figure 8 This is an elevation view of the second type of adjustable truss of this utility model;

[0028] Figure 9 This is a structural diagram of the adjustable strut of this utility model;

[0029] The following are the labeling elements in the diagram: 1. Anchor block; 2. Side formwork truss; 3. Hanging basket outer sliding beam; 4. Longitudinal beam; 5. Connecting system; 6. Adjustable strut; 61. Steel pipe; 62. Threaded rod; 7. Vertical rod; 8. Diagonal rod; 9. Ear plate; 91. Longitudinal beam ear plate; 92. Diagonal rod ear plate; 10. Pin; 11. Stiffening plate; 12. Formwork. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] Example 1:

[0032] An adjustable cast-in-place support for the cable anchorage block of a main concrete beam includes: 2. side formwork trusses; 4. longitudinal beams; 5. connecting system; 6. adjustable struts; 7. vertical rods; 8. diagonal rods; 9. ear plates; 10. pins. A matrix of vertically placed side formwork trusses 2 are supported on the outer sliding beam 3 of the hanging basket. A number of spaced-apart longitudinal beams 4 are installed at intervals at the top of the vertically placed side formwork trusses 2, and a connecting system 5 is installed between adjacent longitudinal beams 4. The adjustable truss consists of adjustable struts 6, diagonal rods 8, longitudinal beam ear plates 91, pins 10, and diagonal rod ear plates 92. Four longitudinal beam ear plates 91 are installed at intervals on the top of each longitudinal beam 4. The bottom end of the diagonal rod 8 on the left is connected to the longitudinal beam 4 via pins 10 and the second longitudinal beam ear plate 91 on the left. The bottom end of the adjustable strut 6 on the left is connected via pins 10. The leftmost longitudinal beam ear plate 91 is hinged to the longitudinal beam 4. The top of the left adjustable strut 6 is hinged to the left inclined rod 8 via pin 10 and the bottom inclined rod ear plate 92 in the middle of the left inclined rod 8. The bottom of the right inclined rod 8 is connected to the longitudinal beam 4 via pin 10 and the second right longitudinal beam ear plate 91. The bottom of the right adjustable strut 6 is hinged to the longitudinal beam 4 via pin 10 and the rightmost longitudinal beam ear plate 91. The top of the right adjustable strut 6 is hinged to the right inclined rod 8 via pin 10 and the bottom inclined rod ear plate 92 on the top of the right inclined rod 8. A connecting system 5 is installed between adjacent inclined rods 8 on the same side. Two adjustable struts 6 are provided on the longitudinal beam 4, with the other end of the struts supporting the inclined rods 8. A template 12 for casting anchor blocks is provided on the top of the two inclined rods 8 and the middle of the longitudinal beam 4.

[0033] The adjustable support rod 6 consists of a middle steel pipe 61 and screw rods 62 at both ends. One end of the screw rod 62 is screwed into the middle steel pipe 61 through a threaded connection.

[0034] The connecting system 5 is arranged in a Z-shape.

[0035] The longitudinal beam 4 is made of I-16 steel; the connecting system 5 is made of ∠50×5 equal-leg angle steel; the adjustable strut 6 is made of φ45×3.5mm steel pipe 61; the screw rod 62 is φ45mm and the adjustable range of the screw rod 62 is ±50mm; the diagonal rod 8 is made of 2[8 steel.

[0036] A construction method for an adjustable concrete main beam cable anchorage block cast-in-place support includes the following steps:

[0037] S10. After the hanging basket has traveled to the position, adjust the side formwork truss 2 to the appropriate position, install the adjustable truss consisting of longitudinal beam 4, adjustable strut 6, diagonal brace 8, longitudinal beam ear plate 91, pin 10 and diagonal brace ear plate 92, and install the connection system 5 between the longitudinal beam 4 and the diagonal brace 8 on both sides.

[0038] S20. Adjust the length of the threaded rod 62 of the adjustable strut 6 to adjust the tilt angle of the diagonal rod 87 according to the actual site conditions. A template 12 for casting anchor blocks is provided on the top of the diagonal rods 8 on both sides and in the middle of the longitudinal beam 4.

[0039] S30. Construction anchor block 1: After the construction of this section is completed, remove the pin 10 connecting the adjustable strut 6 and the diagonal strut 8, and lay down the diagonal strut 8 and the adjustable strut 6 so that the diagonal strut 8 and the adjustable strut 6 are parallel to the longitudinal beam 4.

[0040] S40. The hanging basket carries the adjustable truss to the next block to be constructed, and the construction is repeated until the end.

[0041] Example 2:

[0042] An adjustable cast-in-place support for the cable anchorage block of a main concrete beam includes: 2. side formwork truss; 4. longitudinal beam; 5. connecting system; 6. adjustable strut; 7. vertical rod; 8. diagonal rod; 9. ear plate; 10. pin; 11. stiffening plate; A matrix of vertically placed side formwork trusses 2 are supported on the outer sliding beam 3 of the hanging basket. A number of spaced-apart longitudinal beams 4 are installed at intervals at the top of the vertically placed side formwork trusses 2, and a connecting system 5 is installed between adjacent longitudinal beams 4; the adjustable truss consists of adjustable struts 6, vertical rods 7, diagonal rods 8, longitudinal beam ear plates 91, pins 10, and diagonal rod ear plates 92. A longitudinal beam ear plate 91 is installed at each end of the upper part of each longitudinal beam 4. Two vertical rods 7 with pin holes at the top are spaced apart between the two longitudinal beam ear plates 91 on the upper part of each longitudinal beam 4. The bottom end of the diagonal rod 8 on the left is connected to the left vertical rod 7 via the pin hole of the pin 10. The vertical rod 7 on the side is connected. The bottom end of the adjustable support rod 6 on the left is hinged to the longitudinal beam 4 via a pin 10 and the left longitudinal beam ear plate 91. The top end of the adjustable support rod 6 on the left is hinged to the left diagonal rod 7 via a pin 10 and the bottom diagonal ear plate 92 in the middle of the left diagonal rod 8. The bottom end of the diagonal rod 7 on the right is connected to the right vertical rod 7 via a pin 9 and the pin hole of the right vertical rod 6. The bottom end of the adjustable support rod 6 on the right is hinged to the longitudinal beam 4 via a pin 10 and the right longitudinal beam ear plate 91. The top end of the adjustable support rod 6 on the right is hinged to the right diagonal rod 8 via a pin 10 and the bottom diagonal ear plate 92 on the top of the right diagonal rod 8. A connecting system 5 is installed between adjacent diagonal rods 8 on the same side. Two adjustable support rods 6 are provided on the longitudinal beam 4. The other end of the support rods supports the diagonal rod 8. A template 12 for casting anchor blocks is provided on the top of the diagonal rods 8 on both sides and in the middle of the longitudinal beam 4.

[0043] The adjustable support rod 6 consists of a middle steel pipe 61 and screw rods 62 at both ends. One end of the screw rod 62 is screwed into the middle steel pipe 61 through a threaded connection.

[0044] A stiffening plate 11 is fixed by welding at the connection between the vertical rod 7 and the longitudinal beam 4.

[0045] The connecting system 5 is arranged in a Z-shape.

[0046] The longitudinal beam 4 is made of I-16 steel; the connecting system 5 is made of ∠50×5 equal-leg angle steel; the adjustable strut 6 is made of φ45×3.5mm steel pipe 61; the screw rod 62 is φ45mm and the adjustable range of the screw rod 62 is ±50mm; the diagonal rod 8 is made of 2[8 steel.

[0047] A construction method for a cast-in-place support for the anchorage block of a concrete main beam cable tie includes the following steps:

[0048] S10. After the hanging basket has traveled to the position, adjust the side formwork truss 2 to the appropriate position, install the adjustable truss consisting of longitudinal beam 4, adjustable strut 6, diagonal brace 8, longitudinal beam ear plate 91, pin 10 and diagonal brace ear plate 92, and install the connection system 5 between the longitudinal beam 4 and the diagonal brace 8 on both sides.

[0049] S20. Adjust the length of the threaded rod 62 of the adjustable strut 6 to adjust the tilt angle of the diagonal rod 87 according to the actual site conditions. A template 12 for casting anchor blocks is provided on the top of the diagonal rods 8 on both sides and in the middle of the longitudinal beam 4.

[0050] S30. Construction anchor block 1: After the construction of this section is completed, remove the pin 10 connecting the adjustable strut 6 and the diagonal strut 8, and lay down the diagonal strut 8 and the adjustable strut 6 so that the diagonal strut 8 and the adjustable strut 6 are parallel to the longitudinal beam 4.

[0051] S40. The hanging basket carries the adjustable truss to the next block to be constructed, and the construction is repeated until the end.

[0052] This utility model is not limited to the above-described preferred embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.

Claims

1. A cast-in-place support for adjustable concrete main beam cable anchor blocks, characterized in that: It includes: side formwork trusses, adjustable trusses and connecting systems; several vertically placed side formwork trusses arranged in a matrix are supported on the outer sliding beam of the hanging basket; longitudinal beams are installed at intervals at the top of the several vertically placed side formwork trusses; connecting systems are installed between adjacent longitudinal beams; connecting systems are installed between adjacent diagonal bars on the same side; and a template for casting anchor blocks is provided on the upper part of the adjustable truss.

2. The adjustable concrete main beam cable anchorage block cast-in-place support according to claim 1, characterized in that: The adjustable truss consists of longitudinal beams, adjustable struts, diagonal braces, longitudinal beam lugs, diagonal brace lugs, and pins. Four longitudinal beam lugs are installed at intervals on the top of each longitudinal beam. The bottom end of the diagonal brace on the left is connected to the longitudinal beam via a pin and the second longitudinal beam lug from the left. The bottom end of the adjustable strut on the left is hinged to the longitudinal beam via a pin and the leftmost longitudinal beam lug. The top end of the adjustable strut on the left is hinged to the diagonal brace on the left via a pin and the bottom diagonal brace lug. The bottom end of the diagonal brace on the right is connected to the longitudinal beam via a pin and the second longitudinal beam lug from the right. The bottom end of the adjustable strut on the right is hinged to the longitudinal beam via a pin and the rightmost longitudinal beam lug. The top end of the adjustable strut on the right is hinged to the diagonal brace on the right via a pin and the bottom diagonal brace lug. A template for casting anchor blocks is provided above the diagonal braces on both sides and in the middle of the longitudinal beams.

3. The adjustable concrete main beam cable anchorage block cast-in-place support according to claim 1, characterized in that: The adjustable truss consists of longitudinal beams, adjustable struts, vertical members, diagonal members, longitudinal beam lugs, diagonal member lugs, and pins. Each longitudinal beam has a longitudinal beam lug at both ends. On the top of each longitudinal beam, between the two longitudinal beam lugs, are two vertical members with pin holes at their tops. The bottom end of the left diagonal member is connected to the left vertical member via a pin and the pin hole of the left vertical member. The bottom end of the left adjustable strut is hinged to the longitudinal beam via a pin and the left longitudinal beam lug. The left adjustable strut... The top end is hinged to the left diagonal rod via a pin and the bottom diagonal rod ear plate in the middle of the left diagonal rod; the bottom end of the right diagonal rod is connected to the right vertical rod via a pin and the pin hole of the right vertical rod; the bottom end of the right adjustable strut is hinged to the longitudinal beam via a pin and the right longitudinal beam ear plate; the top end of the right adjustable strut is hinged to the right diagonal rod via a pin and the bottom diagonal rod ear plate on the top of the right diagonal rod; a template for casting anchor blocks is provided on the top of both diagonal rods and in the middle of the longitudinal beam.

4. The adjustable concrete main beam cable anchorage block cast-in-place support according to claim 2 or 3, characterized in that: The adjustable strut consists of a central steel pipe and threaded rods at both ends. One end of the threaded rod is screwed into the central steel pipe through a threaded connection.

5. The adjustable concrete main beam cable anchorage block cast-in-place support according to claim 2 or 3, characterized in that: The connection system is arranged in a Z-shape.

6. The adjustable concrete main beam cable anchorage block cast-in-place support according to claim 2 or 3, characterized in that: The longitudinal beams are made of I-16 steel; the connecting system is made of ∠50×5 equal-leg angle steel; the adjustable struts are made of φ45×3.5mm steel pipes; the lead screws are φ45mm, and the adjustable range of the lead screws is ±50mm; the diagonal braces are made of 2[8 steel.

7. The adjustable concrete main beam cable anchorage block cast-in-place support according to claim 3, characterized in that: Stiffening plates are welded to the connection between the vertical rod and the longitudinal beam.

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