Large-span support structure applying jacking device

Abstract

The utility model belongs to the technical field of bridge structure foundations, and particularly discloses a large-span support structure applying a jacking device, which is arranged between two adjacent concrete pier bodies and comprises two groups of steel pipe supports respectively arranged on the two adjacent concrete pier bodies. The steel pipe support comprises two rows of first steel pipe pile assemblies and second steel pipe pile assemblies which are arranged in parallel, a connecting system is arranged between the first steel pipe pile assemblies and the second steel pipe pile assemblies, and each of the first steel pipe pile assemblies and the second steel pipe pile assemblies comprises a plurality of steel pipe piles arranged side by side. A sand box is arranged at the top of each steel pipe pile, a distribution beam I is arranged on each sand box, a plurality of combined rod pieces are arranged on each distribution beam I, and a jacking device is arranged at the other end of each combined rod piece. The utility model provides a large-span support structure applying a jacking device. The problem that the linear shape of a longitudinal slope of a pouring main beam structure is difficult to control is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge structure foundation, and particularly relates to a long-span support structure applying a jacking device. Background Art

[0002] At present, with the good development of the domestic economic situation, the construction of land transportation is also expanding rapidly. As an important part of the road traffic field, high-speed railways frequently appear, connecting cities more closely. At the same time, in urban construction, railway simply supported beams inevitably need to cross existing roads, increasing the risk of the construction process. At the same time, due to problems such as tight construction periods and difficulties in controlling the longitudinal slope linearity of the main beam structure, how to ensure site safety during the construction process is also a major difficulty. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above problems existing in the prior art, and provide a long-span support structure applying a jacking device, which solves the problem of difficult control of the longitudinal slope linearity of the cast main beam structure.

[0004] To achieve the above technical purpose and reach the above technical effect, the utility model is realized through the following technical solutions:

[0005] A long-span support structure applying a jacking device is arranged between two adjacent concrete piers, and includes two groups of steel pipe supports. The two steel pipe supports are respectively arranged on the two adjacent concrete piers. The steel pipe support includes two rows of parallel steel pipe pile assemblies I and II. A connecting system is arranged between the steel pipe pile assembly I and the steel pipe pile assembly II. Both the steel pipe pile assembly I and the steel pipe pile assembly II include a plurality of steel pipe piles arranged side by side. A sand box is arranged on the top of each steel pipe pile. A first distribution beam is arranged on the sand box. A plurality of combined members are arranged on the first distribution beam. The other end of the combined member is provided with a jacking device;

[0006] Two groups of attaching components are arranged on the steel pipe pile assembly I. The attaching components are fixed to the concrete pier by threaded steel bars.

[0007] Furthermore, a shim is arranged between the combined member and the first distribution beam.

[0008] Furthermore, the steel pipe pile assembly I and the steel pipe pile assembly II are connected by a connecting system.

[0009] Furthermore, the attaching component includes two attaching parts arranged side by side and in parallel. The two attaching parts are fixed to both sides of the concrete pier by threaded steel bars;

[0010] There are two connecting steel profiles arranged on the first steel pipe pile assembly, and the other ends of the two connecting steel profiles are connected to the attachment member.

[0011] Furthermore, the included angle between the two connecting steel profiles is 60 - 150°.

[0012] Further, a second distribution beam is laid on the other end of the top support device.

[0013] Further, the top support device includes a top support rod, an upper buckle plate and a lower buckle plate arranged outside the top support rod, and two limit nuts are threadedly connected to the top support rod;

[0014] The second distribution beam is located between the upper buckle plate and the lower buckle plate.

[0015] Furthermore, the upper buckle plate and the lower buckle plate are located between the two limit nuts.

[0016] Further, at the other end of the steel pipe pile at the bottom of the first steel pipe pile assembly, there is a column foot embedded part one, and the column foot embedded part one is arranged at the bottom of the concrete pier body.

[0017] Further, at the other end of the steel pipe pile at the bottom of the second steel pipe pile assembly, there is a column foot embedded part two.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1. In the present utility model, the steel pipe piles are connected by a connecting system, so that a frame structure is formed between the first steel pipe pile assembly and the second steel pipe pile assembly, enhancing the stability of the support, and at the same time improving the structural stiffness, ensuring the safety during the concrete pouring construction.

[0020] 2. In the present utility model, an attachment member is arranged between the steel pipe pile and the concrete pier body, so that a firm connection is formed between the steel pipe pile and the concrete pier body. The attachment member is fixed to the concrete pier body, and the steel pipe pile is connected to the attachment member through the connecting steel profile. Furthermore, a firm triangular structure is formed between the attachment member and the steel pipe pile, enabling the concrete pier body and the steel pipe support to bear the main beam pouring load simultaneously, reducing the possibility of the support collapsing.

[0021] 3. In the present utility model, a top support device is arranged at the other end of the combined member. The top support device is used to adjust the longitudinal slope line shape and flatness of the main beam, meeting the accuracy requirements of the main beam structure, solving the problem of difficult control of the longitudinal slope line shape during the pouring of the main beam structure, and at the same time facilitating the later removal of the formwork of the main beam and the unloading of the steel pipe support.

[0022] 4. The large-span support structure applying the top support device provided by the present utility model is convenient for overall assembly, easy for construction, reduces the construction difficulty, is beneficial to accelerating the construction progress, and reducing the construction cost. Description of the Drawings

[0023] The accompanying drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0024] Figure 1 is the main structural view of the present utility model;

[0025] Figure 2 is the side structural view of the present utility model;

[0026] Figure 3 is the top view of the connection structure between the steel pipe support and the concrete pier of the present utility model;

[0027] Figure 4 is the structural schematic diagram of the jacking device of the present utility model.

[0028] Among them, the reference numerals are: 100, concrete pier; 200, steel pipe support; 10, steel pipe pile assembly one; 20, steel pipe pile assembly two; 8, connection system; 9, steel pipe pile; 4, distribution beam one; 2, combined member; 1, jacking device; 3, shimming; 60, attachment assembly; 6, attachment; 91, connecting section steel; 11, limit nut; 12, jacking rod; 13, upper buckle plate; 14, lower buckle plate; 15, column foot embedded part one; 16, column foot embedded part two. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0030] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationships are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0031] Such as Figures 1 to 3As shown in the figure, a long-span support structure with a jacking device is arranged between two adjacent concrete piers 100. Specifically, the long-span support structure includes two groups of steel pipe supports 200. Among them, the two steel pipe supports 200 are respectively arranged on two adjacent concrete piers 100. The steel pipe support 200 includes two rows of parallel steel pipe pile assemblies one 10 and steel pipe pile assemblies two 20. A connecting system 8 is arranged between the steel pipe pile assembly one 10 and the steel pipe pile assembly two 20. Both the steel pipe pile assembly one 10 and the steel pipe pile assembly two 20 include a plurality of steel pipe piles 9 arranged side by side.

[0032] Among them, the steel pipe pile assembly one 10 and the steel pipe pile assembly two 20 are connected by the connecting system 8. The connecting system 8 is a combined frame structure. Through the connection of the connecting system 8, a frame structure is formed between the steel pipe pile assembly one 10 and the steel pipe pile assembly two 20, thereby enhancing the stability of the formed steel pipe support 200. At the same time, the structural stiffness is also improved, and thus the safety during concrete pouring construction can be guaranteed.

[0033] Among them, between the multiple steel pipe piles 9 in each of the steel pipe pile assembly one 10 and the steel pipe pile assembly two 20, they are also connected by a connecting system. This connecting system is connected to the connecting system 8, thereby enhancing the stability of the steel pipe support 200.

[0034] Two groups of attachment components 60 are arranged on the steel pipe pile assembly one 10. The attachment components 60 are fixed to the concrete pier 100 by threaded steel, that is, the steel pipe support 200 is fixed to the concrete pier 100 through the two groups of attachment components 60.

[0035] The two groups of attachment components 60 are arranged at intervals along the height direction of the concrete pier 100 to enhance the stability of the installation of the steel pipe support 200 to the concrete pier 100.

[0036] In addition, the attachment component 60 includes two attachment members 6 arranged side by side and in parallel. The two attachment members 6 are fixed to both sides of the concrete pier 100 by threaded steel. A plurality of threaded steels are arranged between the two attachment members 6, thereby forming a frame structure between the two attachment members 6 and the plurality of threaded steels. This frame structure is stably arranged on the concrete pier 100.

[0037] Two connecting steel beams 91 are arranged on the steel pipe pile assembly one 10. The other ends of the two connecting steel beams 91 are connected to the attachment member 6. The included angle between the two connecting steel beams 91 is 60 - 150°. That is, through the two connecting steel beams 91, a stable triangular structure is formed between the attachment member 6 and the steel pipe pile 9.

[0038] Through the attachment member 6 and the connecting steel beam 91, the concrete pier 100 and the connected steel pipe support 200 bear the main beam pouring load at the same time, reducing the possibility of the support collapsing.

[0039] At the top of each steel pipe pile 9, a sand box is provided. On the sand box, a first distribution beam 4 is provided. On the first distribution beam 4, multiple combined members 2 are provided. At the other end of the combined members 2, a jacking device 1 is provided. The jacking device 1 is used to adjust the longitudinal slope alignment and flatness of the main beam to meet the accuracy requirements of the main beam structure. At the same time, it is convenient for the later removal of the formwork of the main beam and the lowering of the steel pipe support 200.

[0040] A shim 3 is provided between the combined members 2 and the first distribution beam 4. The shim 3 is arranged on the first distribution beam 4, used to support the combined members 2 and prevent the combined members 2 from slipping.

[0041] At the other end of the steel pipe pile 9 at the bottom of the first steel pipe pile assembly 10, a first column base embedded part 15 is provided. The first column base embedded part 15 is arranged at the bottom of the concrete pier 100.

[0042] At the other end of the steel pipe pile 9 at the bottom of the second steel pipe pile assembly 20, a second column base embedded part 16 is provided; both the first column base embedded part 15 and the second column base embedded part 16 are used for the layout during the actual construction of the steel pipe pile 9.

[0043] As Figure 4 shown, at the other end of the jacking device 1, a second distribution beam, a square timber and a bamboo plywood are successively laid.

[0044] The jacking device 1 includes a jacking rod 12, an upper buckle plate 13 and a lower buckle plate 14 arranged outside the jacking rod 12. Two limit nuts 11 are threadedly connected to the jacking rod 12; the upper buckle plate 13 and the lower buckle plate 14 are located between the two limit nuts 11

[0045] The second distribution beam is located between the upper buckle plate 13 and the lower buckle plate 14.

[0046] A large-span support structure applying a jacking device provided by the present utility model. 4 rows of steel pipe piles 9 are successively erected. Connection systems 8 are added between the steel pipe piles 9 for connection to form a frame structure. A sand box is placed on each steel pipe pile 9. 4 long first distribution beams 4 are respectively laid on the sand boxes. Multiple new combined members 2 are arranged on the first distribution beams 4. The new combined members 2 are inserted with a jacking device 1. A second distribution beam, a square timber and a bamboo plywood are erected above the jacking device 1.

[0047] During the specific construction process, the construction process is as follows:

[0048] S1: The size of the new combined members 2 is 4×2m. The first distribution beam 4 uses 2HN700×300 section steel. The steel pipe pile 9 uses 820×10 steel pipe. The connection system 8 uses 2[20a section steel. The attachment uses I25 section steel. The threaded steel uses precision rolled threaded steel.

[0049] S2: The 4 rows of steel pipe piles 9 are erected in sequence. Connecting systems 8 are added between the steel pipe piles 9 for connection to form a frame structure. A sand box is placed on each steel pipe pile 9. Four full-length distribution beams 1-4 are respectively erected on the sand boxes. Multiple (not less than 23) new types of combined members 2 are arranged on the distribution beams 1-4. A jacking device 1 is inserted into the new type of combined member 2. A second distribution beam, square timbers and bamboo plywood are erected above the jacking device 1.

[0050] S3: There are column base embedded parts (column base embedded part 1-15 and column base embedded part 1-16) under each steel pipe pile 9. The column base embedded parts are composed of steel plates and anchor bars, and are pre-embedded in the concrete during construction. Between two concrete pier bodies 100, there are two strip foundations with dimensions of 10.2×1.2×1.5 m for erecting the steel pipe pile support. The column base embedded part 1-16 is pre-embedded in this strip foundation. The column base embedded part 1-15 is pre-embedded in the concrete of the base of the concrete pier body 100.

[0051] S4: A pile head is welded on the steel pipe pile support. The pile head is composed of multiple steel plates with a thickness of 20 mm. There are two groups of attachment components 60 between the steel pipe pile 9 and the concrete pier body 100. Each group of attachment components 60 is composed of section steel and precision rolled threaded steel. When constructing the concrete pier body 100, the position of the pull rod hole is reserved at a certain height for arranging the precision rolled threaded steel.

[0052] S5: The jacking device 1 is composed of a limit nut 11, a jacking rod 12, an upper buckle plate 13 and a lower buckle plate 14. The jacking device 1 is inserted into the gap of the new type of combined member 2 at a certain appropriate position.

[0053] It can be seen from the above construction process that for this long-span support structure, the overall assembly is convenient, which is conducive to construction, reduces the construction difficulty, is beneficial to accelerating the construction progress and reducing the construction cost.

[0054] A long-span support structure applying a jacking device provided by the present utility model solves the problem of difficult control of the longitudinal slope linearity of the cast main beam structure.

[0055] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0056] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A large-span support structure using a jacking device, arranged between two adjacent concrete piers (100), characterized in that: The invention comprises two groups of steel pipe supports (200), wherein the two steel pipe supports (200) are respectively arranged on two adjacent concrete piers (100), wherein the steel pipe supports (200) comprise two rows of steel pipe pile assemblies (10) and steel pipe pile assemblies (20) arranged in parallel, wherein a connection system (8) is arranged between the steel pipe pile assemblies (10) and the steel pipe pile assemblies (20), wherein the steel pipe pile assemblies (10) and the steel pipe pile assemblies (20) each comprise a plurality of steel pipe piles (9) arranged in parallel, wherein a sand box is arranged on the sand box, wherein a distribution beam (4) is arranged on the distribution beam (4), wherein a plurality of combined rods (2) are arranged on the distribution beam (4), and a supporting device (1) is arranged on the other end of the combined rods (2); The first steel pipe pile assembly (10) is provided with two sets of attachment components (60), and the attachment components (60) are fixed to the concrete pier body (100) by using threaded steel bars.

2. A large-span support structure using a jacking device according to claim 1, characterized in that: A pad (3) is provided between the combined rod (2) and the first distribution beam (4).

3. A large-span support structure using a jacking device according to claim 1, characterized in that: The steel pipe pile assembly 1 (10) and the steel pipe pile assembly 2 (20) are connected via a connecting system (8).

4. A large-span support structure using a jacking device according to claim 1, characterized in that: The attachment assembly (60) comprises two attachment members (6) arranged in parallel and parallel to each other, and the two attachment members (6) are fixed to two sides of the concrete pier body (100) by means of threaded steel bars; The first steel pipe pile assembly (10) is provided with two connection steel sections (91), and the other ends of the two connection steel sections (91) are connected to the attachment (6).

5. A large-span support structure using a jacking device according to claim 4, characterized in that: The angle between the two connecting steel sections (91) is 60-150°.

6. A large-span support structure using a jacking device according to claim 1, characterized in that: A second distribution beam is provided at the other end of the jacking device (1).

7. A large-span support structure using a jacking device according to claim 6, characterized in that: The supporting device (1) comprises a supporting rod (12), an upper buckle plate (13) and a lower buckle plate (14) arranged outside the supporting rod (12); two limiting nuts (11) are threadedly connected to the supporting rod (12); The second distribution beam is located between the upper buckle plate (13) and the lower buckle plate (14).

8. A large-span support structure using a jacking device according to claim 7, characterized in that: The upper buckle plate (13) and the lower buckle plate (14) are located between the two limiting nuts (11).

9. A large-span support structure using a jacking device according to claim 1, characterized in that: The other end of the steel pipe pile (9) located at the bottom of the steel pipe pile assembly (10) is provided with a column foot embedded part (15), and the column foot embedded part (15) is arranged at the bottom of the concrete pier body (100).

10. A large-span support structure using a jacking device according to claim 1, characterized in that: The other end of the steel pipe pile (9) located at the bottom of the second steel pipe pile assembly (20) is provided with a second column foot embedded part (16).

Images