Fabricated supporting structure suitable for narrow pipeline groove

Abstract

The utility model relates to the technical field of protection in the pipeline construction process, in particular to an assembly type supporting structure suitable for a narrow pipeline groove. Comprising steel pipe piles, the multiple steel pipe piles are arranged on the two opposite sides of a pipeline groove, and supporting plates and cross beams which are distributed in a staggered mode are arranged between every two adjacent steel pipe piles located on the same side; a diagonal brace is arranged between every two opposite steel pipe piles. According to the technical scheme, a double-side supporting system is formed through the steel pipe piles, the supporting plates, the cross beams and the diagonal bracings, the section strength and the overall rigidity are large, the bending resistance is high, the reliable structural stability and operation convenience are achieved, and the double-side supporting structure is suitable for water supply and drainage pipeline projects which cannot be excavated in a sloping mode due to topographic conditions and is suitable for narrow pipeline groove construction.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline construction protection, in particular to an assembled supporting structure suitable for narrow pipeline grooves. Background Art

[0002] At present, the support plate support commonly used for narrow trench support in rural sewage reconstruction should meet the following requirements (i.e. Article 4.3.8 of the "Code for Construction and Acceptance of Water Supply and Drainage Pipeline Engineering"): (1) The thickness of the support plate should not be less than 50 mm and the length should not be less than 4 m; (2) The crossbeam or longitudinal beam should be square wood, and its cross section should not be less than 150 mm × 150 mm; (3) The cross brace should be a steel pipe; The arrangement of the crossbeam, longitudinal beam and cross brace supported by the support plate should meet the following requirements: (1) Each crossbeam or longitudinal beam shall not be less than 2 cross braces; (2) The horizontal spacing of the cross braces should be 1.5 to 2.0 m; (3) The vertical spacing of the cross braces should not be greater than 1.5 m; (4) When the cross brace affects the lower pipe, corresponding replacement measures should be taken or other effective support structures should be adopted;

[0003] There are some disadvantages of wooden support board support: most of the wood used is wood and the components are numerous and heavy. The installation and removal require a certain amount of manpower, which greatly reduces the construction efficiency and makes turnover difficult. In places where the soil is unstable or the trench is deep, steel sheet pile support is required. Rural sewage pipe network construction is mostly narrow lanes and locally deep pipeline trenches. The cost of steel sheet piles entering and leaving the site is high. Steel sheet piles need to be driven in continuously, which increases the interference with the soil layer. When the piles are pulled out, there is also a certain impact on the surrounding buildings. The existing support measures are not suitable for narrow lane trench support, so the utility model is proposed. Utility Model Content

[0004] The utility model aims to provide an assembled supporting structure suitable for narrow pipeline trenches. The supporting structure is convenient to construct, has a safe and stable structure, and has a low cost, and is suitable for narrow pipeline trenches.

[0005] The utility model provides an assembled supporting structure suitable for narrow pipeline trenches, comprising steel pipe piles, a plurality of the steel pipe piles are arranged on opposite sides of the pipeline trench, staggered support plates and cross beams are arranged between two adjacent steel pipe piles on the same side, and a counter support is arranged between two opposite steel pipe piles.

[0006] Furthermore, the support plate includes a support plate, and connecting plates are provided at both ends of the support plate; a slot is provided on the side wall of the steel pipe pile along the height direction, and the connecting plate is located in the slot.

[0007] Furthermore, the length of the support plate is not less than 1.5 m and not more than 2 m, and the width is not more than 1.5 m.

[0008] Furthermore, the shape of the slot is L-shaped, and the slot is located on the central axis of the steel pipe pile.

[0009] Furthermore, the crossbeam includes a supporting beam, and blocks are provided at both ends of the supporting beam, and the blocks are engaged with the card slots.

[0010] Furthermore, the counter-support comprises a supporting steel pipe, one end of which is provided with a support, an oil support is provided in the supporting steel pipe, and one end of the oil support is also provided with the support.

[0011] Furthermore, the support is a U-shaped support.

[0012] Furthermore, an anti-slip pad is provided on the horizontal side wall of the U-shaped support.

[0013] Furthermore, the support is welded to the supporting steel pipe and the oil support respectively.

[0014] In summary, compared with the prior art, the utility model has the following advantages:

[0015] The technical solution provided by the utility model forms a double-sided support system through the steel pipe piles, support plates, cross beams and counter-supports, which have large cross-sectional strength and overall rigidity, strong bending resistance, reliable structural stability and convenient operation; compared with wooden support plate support, it has more reliable safety and steadily improves construction efficiency; compared with steel sheet pile support, it has improved economic benefits and simple procedures, low material turnover costs, small disturbance to the foundation due to discontinuous pile extraction, and reduced impact on surrounding buildings. It is suitable for water supply and drainage pipeline projects that cannot be excavated due to terrain conditions, and is suitable for the construction of narrow pipeline trenches. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the support structure in the embodiment of the utility model;

[0018] Figure 2 A top view of the support structure in the embodiment of the utility model;

[0019] Figure 3 A top view of a steel pipe pile in an embodiment of the utility model;

[0020] Figure 4This is a structural schematic diagram of the support plate in the embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the crossbeam in the embodiment of the utility model;

[0022] Figure 6 It is a schematic diagram of the structure of the brace in the embodiment of the utility model.

[0023] Explanation of the accompanying drawings: 1-steel pipe pile, 101-slot, 2-support plate, 201-support plate, 202-connecting plate, 3-cross beam, 301-support beam, 302-block, 4-counter support, 401-support steel pipe, 402-oil support, 403-support, 404-anti-slip pad. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Example

[0028] An assembled support structure suitable for narrow pipeline trenches, such as Figure 1 and Figure 2 As shown, it includes steel pipe piles 1. A plurality of steel pipe piles 1 are arranged on opposite sides of the pipeline groove. Support plates 2 and cross beams 3 are alternately distributed between two adjacent steel pipe piles 1 on the same side, and a counter support 4 is arranged between two opposite steel pipe piles 1.

[0029] In this embodiment, the steel pipe pile 1 adopts a DN108 steel pipe. Both ends of the central axis of the steel pipe pile 1 are provided with a clamping groove 101. The clamping groove 101 is welded on the side wall of the steel pipe pile 1 along the height direction. The shape of the clamping groove 101 is L-shaped. Figure 3 As shown, both ends of the support plate 2 and the cross beam 3 are engaged with the clamping groove 101. The distance between two adjacent steel pipe piles 1 is not less than 1.5m and not more than 2m, which matches the length of the support plate 2.

[0030] like Figure 4 As shown, the support plate 2 includes a support plate 201, and connecting plates 202 are fixed at both ends of the support plate 201. The connecting plates 202 are clamped in the clamping slots 101, and the connecting plates 202 at both ends of the support plate 2 form a snap-fit ​​with the clamping slots 101 on the steel pipe pile 1. The support plate 201 in this embodiment is a plywood or a steel plate, and the connecting plate 202 is a steel plate. The length of the support plate 201 is not less than 1.5m and not more than 2m, and the width is not more than 1.5m.

[0031] like Figure 5 As shown, the cross beam 3 includes a support beam 301, and clamping blocks 302 are welded at both ends of the support beam 301, and the clamping blocks 302 are clamped with the clamping slots 101. In this embodiment, the support beam 301 is made of steel pipe, and the clamping blocks 302 are made of square steel plates.

[0032] like Figure 6 As shown, the support 4 includes a support steel pipe 401, one end of which is welded with a support bracket 403, an oil support 402 is provided inside the support steel pipe 401, and one end of the oil support 402 is also welded with a support bracket 403. In this embodiment, the support bracket 403 is a U-shaped support, and a rubber anti-skid pad 404 is fixed on the horizontal side wall of the U-shaped support. The oil support 402 is provided to facilitate adjusting the length of the support 4 according to the horizontal distance between the two opposite steel pipe piles 1, and is suitable for grooves of various sizes.

[0033] The method for using the assembled support structure provided by the utility model is as follows: (1) When the steel pipe pile 1 is hoisted to the pile position for pile insertion, the pile body will sink by itself due to its own weight and the pile hammer placed on the pile top, and penetrate into the soil. After sinking to a stable state, pile driving can be performed again; (2) The steel pipe pile 1 continuous wall is clamped firmly with the vibrating hammer clamp; the high-frequency vibrating hammer is started to insert the steel pipe pile 1 continuous wall into the soil by means of vibration insertion; (3) When driving the first steel pipe pile 1, the excavator is first used to dig a little deeper at the adjacent pile position in the trench, and a short pile is hoisted in. The crane replaces the vibrating hammer, and the short pile is driven in until 3m is left between the pile top and the ground. Then the first steel pipe pile 1 is hoisted, and the verticality is controlled. When the pile is driven to a certain depth and the pile driving quality is verified to be good, continuous penetration is performed. Until the designed elevation is reached, the hydraulic clamp is released, the hammer is lifted off, and the second pile is driven. The above process is repeated until all the steel pipe piles are driven. (4) The support is carried out by continuously excavating the trench. A brace 4 is installed between two opposite steel pipe piles 1. The anti-skid pads 404 on the supports 403 at both ends are tightly fitted with the side walls of the steel pipe piles 1 by adjusting the oil support 402. According to the excavation depth, multiple braces 4 can be installed at intervals up and down. The support plates 2 and beams 3 fall with the excavation through the slots 101. When the lower edge of the first layer of support plates 2 falls to 1.2m below the ground elevation, the first beam 3 is immediately installed. When the first beam 3 falls 1.2m with the excavation, the support plates 2 are immediately installed. This is carried out alternately to ensure that support can be carried out as the excavation progresses.

[0034] The assembled support structure provided by the utility model is a multi-layer support structure. Backfilling and dismantling of supports should follow the construction principle of dismantling the upper layer after the backfilling of the lower layer is completed. The top support plates and beams can be dismantled first, and the dismantling work can be carried out in this way.

[0035] The assembled support structure provided by the utility model has large cross-sectional strength and overall rigidity, strong bending resistance, reliable structural stability and convenient operation. Compared with wooden support, it has more reliable safety and steadily improves construction efficiency. Compared with steel sheet pile support, it has improved economic benefits and simple procedures, low material turnover costs, and discontinuous pile extraction has little disturbance on the foundation, reducing the impact on surrounding buildings. It is suitable for trench construction with narrow trenches and excavation depth not exceeding 5m, and is mainly suitable for water supply and drainage pipeline projects where slope excavation is not possible due to terrain conditions. Layered excavation, layered support, and support as excavation proceeds have little impact on the construction period and are highly practical.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An assembled support structure suitable for narrow pipeline trenches, characterized in that: It comprises steel pipe piles (1), wherein a plurality of the steel pipe piles (1) are arranged on opposite sides of a pipeline groove, and between two adjacent steel pipe piles (1) on the same side, staggered support plates (2) and cross beams (3) are arranged; and between two opposite steel pipe piles (1), a counter support (4) is arranged.

2. The assembled support structure according to claim 1, characterized in that: The support plate (2) comprises a support plate (201), and connecting plates (202) are arranged opposite to each other at two ends of the support plate (201); a clamping groove (101) is arranged on the side wall of the steel pipe pile (1) along the height direction, and the connecting plate (202) is located in the clamping groove (101).

3. The assembled support structure according to claim 2 is characterized in that: The support plate (201) has a length of not less than 1.5 m and not more than 2 m, and a width of not more than 1.5 m.

4. The assembled support structure according to claim 2, characterized in that: The shape of the clamping groove (101) is L-shaped, and the clamping groove (101) is located on the central axis of the steel pipe pile (1).

5. The assembled support structure according to claim 4 is characterized in that: The crossbeam (3) comprises a support beam (301), and two ends of the support beam (301) are provided with clamping blocks (302), and the clamping blocks (302) are clamped with the clamping slot (101).

6. The assembled support structure according to claim 1, characterized in that: The support (4) comprises a supporting steel pipe (401), one end of which is provided with a support (403), an oil support (402) is provided in the supporting steel pipe (401), and one end of the oil support (402) is also provided with the support (403).

7. The assembled support structure according to claim 6, characterized in that: The support (403) is a U-shaped support.

8. The assembled support structure according to claim 7, characterized in that: An anti-slip pad (404) is provided on the horizontal side wall of the U-shaped support.

9. The assembled supporting structure according to claim 8, characterized in that: The support (403) is welded to the supporting steel pipe (401) and the oil support (402) respectively.

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