Groove foundation pit supporting system

Abstract

The utility model belongs to the technical field of pipeline groove foundation pit supporting, and provides a groove foundation pit supporting system which comprises a rib plate, a support and four stand columns. The four stand columns are located at the four corners of the rectangle respectively. The rib plates are arranged along the rectangular longitudinal edges, and the two ends of each rib plate are in sliding fit with the two stand columns on the same longitudinal edge respectively; the supports are arranged along the transverse edges of the rectangle, and the two ends of each support are connected with the two stand columns on the same transverse edge through bolts. The trench foundation pit supporting system can be reversibly used for construction and supporting while excavation, the stand columns and the rib plates do not need to be embedded below the trench bottom, all the components are in a prefabricated assembly mode and can be completely recycled and reused, and compared with traditional Larsen steel sheet piles, the trench foundation pit supporting system can greatly save the construction period, is better in economical efficiency and environmental protection performance and better conforms to the green low-carbon environmental protection concept. The stand columns, the rib plates and the supports are all standard profile steel components, the supporting rigidity is large, the single-section supporting span is large, and pipeline hoisting is not affected. Connecting holes are formed in the whole vertical rib of the stand column, and the vertical position of the support can be flexibly adjusted.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline trench foundation pit support technology, specifically relating to a trench foundation pit support system. Background Technology

[0002] Common support methods for municipal utility pipeline trenches and foundation pits include Larssen sheet piles, steel pipe (section steel) piles, anchor bolt support, and transverse plate support systems. These construction methods have some drawbacks.

[0003] Larssen sheet pile support suffers from significant material wastage and low reuse rate; the construction process, including pre-drilling, pile driving, and support installation, is complex, involves numerous procedures, generates significant construction noise, and has a long construction period; construction occupies a large working area, affecting urban traffic organization; sheet piles have high requirements for embedment depth below the trench bottom, and can only be inserted first before excavation; when the soil is dense, pre-drilling measures are also required; steel walers and steel supports are mostly connected by welding, resulting in a low recycling rate; sheet piles are used in large quantities, the driving and extraction process is noisy, and large machinery is required for construction; during the installation of the support structure, there is a risk of damaging existing deeply buried intersecting pipelines; the overall construction cost is high, resulting in poor economic efficiency.

[0004] The transverse support system is a more economical and convenient construction method, especially suitable for conditions with limited surrounding space, shallow excavation depth, and favorable geological conditions. However, it still has some drawbacks in practical applications. For example, the spacing between vertical supports (columns) is relatively small, resulting in the support spacing often being less than the length of a single pipe section, making pipe installation difficult and sometimes requiring disassembly of supports before hoisting, thus posing safety hazards to the trench. Traditional transverse support components are all made of wood, resulting in insufficient structural strength and rigidity of connection parts, and poor assembly performance. There is no unified standard for transverse support components, leading to a large degree of arbitrariness in the dimensions of construction materials, making quality control difficult. The supports cannot move flexibly up and down, which has a significant impact on pipe hoisting and poses higher safety and quality risks. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a lightweight prefabricated trench foundation pit support system that can be quickly constructed under temporary self-stabilizing conditions, is suitable for different geological conditions, and is easy to recycle and reuse after construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a trench foundation pit support system, comprising ribs, supports, and four columns;

[0007] The four pillars are located at the four corners of the rectangle;

[0008] The ribs are arranged along the longitudinal side of the rectangle, and the two ends of the ribs are respectively slidably engaged with two columns on the same longitudinal side;

[0009] The support is arranged along the rectangular transverse edge, and two ends of the support are bolted with two columns on the transverse edge respectively.

[0010] Preferably, a T-shaped piece is arranged on the column side wall, the T-shaped piece is parallel to the column, and the end of the rib plate is provided with a sliding groove matched with the T-shaped piece.

[0011] Preferably, the T-shaped piece is welded with the column.

[0012] Preferably, a column vertical rib is arranged on the column side wall, the column vertical rib is parallel to the column, a first connecting hole is arranged on the column vertical rib side wall, a bracket vertical rib is arranged on the support end, a second connecting hole is arranged on the bracket vertical rib side wall, and the bracket vertical rib is bolted with the column vertical rib.

[0013] Preferably, a plurality of first connecting holes are arranged on the column vertical rib side wall, and the plurality of first connecting holes are vertically and uniformly spaced.

[0014] Preferably, two column vertical ribs are arranged on the column side wall, the two column vertical ribs are arranged in parallel and at intervals, two bracket vertical ribs are arranged on the support end, the two bracket vertical ribs correspond to the two column vertical ribs respectively, and the bracket vertical rib is bolted with the corresponding column vertical rib.

[0015] Preferably, the bracket vertical rib is connected with a bracket partition plate, the support end is provided with a lap plate, the lap plate is lapped on the bracket partition plate, a first anchoring hole is arranged on the bracket partition plate, a second anchoring hole is arranged on the lap plate, the first anchoring hole is aligned with the second anchoring hole, and the bolt is simultaneously inserted into the first anchoring hole and the second anchoring hole.

[0016] Preferably, the bracket vertical rib is connected with two bracket partition plates, and the support end is provided with two lap plates, and the two lap plates are respectively lapped on the two bracket partition plates.

[0017] Preferably, the support is a steel pipe.

[0018] Preferably, the column is a steel pipe.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] 1. The trench foundation support system can be constructed reversely, the trench is excavated and supported at the same time, the column and the rib plate do not need to be embedded below the groove bottom, all components are prefabricated and assembled, and can be recycled and used, compared with the traditional Larsen steel sheet pile, the construction period can be greatly saved, the economy and environmental protection are better, and the green low-carbon environmental protection concept is more met.

[0021] 2. The trench foundation support system provided by the utility model, the stand column, the ribbed plate and the support are all standard steel components, the support rigidity is large, the single-section support span is large, and the pipeline hoisting is not affected.

[0022] 3. The trench foundation support system provided by the utility model, the stand column vertical rib is provided with a connecting hole throughout the whole process, so that the support can be flexibly adjusted in the vertical position, the number of supports can be flexibly increased or decreased, the installation and removal efficiency is high, and all the components can be almost fully recycled without damage. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model provides a kind of three-dimensional structure schematic view of trench foundation support system for embodiment of the utility model;

[0024] Figure 2 The utility model provides a kind of three-dimensional structure schematic view of stand column of trench foundation support system for embodiment of the utility model;

[0025] Figure 3 The utility model provides a kind of three-dimensional structure schematic view of ribbed plate of trench foundation support system for embodiment of the utility model;

[0026] Figure 4 The utility model provides a kind of three-dimensional structure schematic view of support and its related part of trench foundation support system for embodiment of the utility model;

[0027] Figure 5 The utility model provides a kind of three-dimensional structure schematic view of bracket vertical rib and its related part of trench foundation support system for embodiment of the utility model;

[0028] Figure 6 The utility model provides a kind of three-dimensional structure schematic view of lap joint plate and its related part of trench foundation support system for embodiment of the utility model.

[0029] In the drawing, the component list represented by each sign is as follows:

[0030] 1, stand column;

[0031] 2, ribbed plate;

[0032] 3, support;

[0033] 4, T-shaped piece;

[0034] 5, sliding groove;

[0035] 6, stand column vertical rib;

[0036] 7, first connecting hole;

[0037] 8, bracket vertical rib;

[0038] 9, second connecting hole;

[0039] 10, bracket partition;

[0040] 11, lap plate;

[0041] 12, first anchoring hole;

[0042] 13, second anchoring hole;

[0043] 14, bolt. DETAILED DESCRIPTION

[0044] In order to make the technical solutions and advantages in the embodiments of the present application more clear and apparent, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0045] The embodiment provides a trench foundation support system, which comprises a rib plate 2, a support 3 and four columns 1.

[0046] The four columns 1 are respectively located at four corners of the rectangle.

[0047] For example, referring to Figure 1 The four columns 1 are vertically arranged, and the four columns 1 are respectively located at four corners of a rectangle.

[0048] The rib plate 2 is arranged along the longitudinal edge of the rectangle, and the two ends of the rib plate 2 are respectively slidably connected with the two columns 1 on the same longitudinal edge.

[0049] For example, referring to Figure 1 The rectangle has two longitudinal edges, and each longitudinal edge corresponds to one rib plate 2, that is, there are two rib plates 2, and the rib plates 2 are vertically arranged. The two ends of the rib plate 2 are respectively slidably connected with the two columns 1 on the same longitudinal edge. When installing, the rib plate 2 can be slid downward into the two columns 1 on the same longitudinal edge. Conversely, the rib plate 2 can be pulled out.

[0050] The support 3 is arranged along the transverse edge of the rectangle, and the two ends of the support 3 are respectively connected with the two columns 1 on the same transverse edge through bolts.

[0051] For example, referring to Figure 1 The rectangle has two transverse edges, and each transverse edge corresponds to two supports 3, that is, there are four supports 3, two on one side. The supports 3 are perpendicular to the rib plate 2, and the two ends of the support 3 are respectively connected with the two columns 1 on the same transverse edge through bolts. When installing, the support 3 can be connected with the columns 1 on the same transverse edge through bolts, and the disassembly and installation are very convenient.

[0052] Based on the above structure, the trench foundation support system provided by the embodiment can be constructed reversely, excavated and supported at the same time, the column 1 and the rib plate 2 do not need to be embedded below the groove bottom, and all components are prefabricated and assembled, which can be recycled and used, compared with the traditional Larsen steel sheet pile, the construction period can be greatly saved, the economy and environmental protection are more superior, and the green low-carbon environmental protection concept is more in line with. Among them, the rib plate 2 is inserted and recycled with high efficiency, and the connection is firm and reliable, and the water stopping effect is good.

[0053] Among them, the column 1 can be a steel pipe, the rib plate 2 can be a steel plate, and the support 3 can be a steel pipe. That is, the column 1, the rib plate 2 and the support 3 are all standard steel components, which have large support rigidity and large single-section support span, and do not affect the pipeline hoisting.

[0054] On the basis of the above technical scheme, in the technical scheme provided by the embodiment, the side wall of the column 1 is provided with a T-shaped piece 4, the T-shaped piece 4 is parallel to the column 1, and the end of the rib plate 2 is provided with a sliding groove 5 matched with the T-shaped piece 4.

[0055] For example, referring to Figure 2 , two T-shaped pieces 4 are arranged on the side wall of the column 1, the T-shaped pieces 4 are vertically arranged, and the lengths of the T-shaped pieces 4 are the same as that of the column 1. Referring to Figure 3 , the left and right ends of the rib plate 2 are provided with sliding grooves 5, the sliding grooves 5 are in sliding cooperation with the T-shaped pieces 4, so that the left and right ends of the rib plate 2 are in sliding cooperation with the two columns 1 respectively. In this way, the rib plate 2 is inserted and recycled with high efficiency, and the connection is firm and reliable, and the water stopping effect is good.

[0056] Among them, the T-shaped piece 4 can be a standard steel component, and the T-shaped piece 4 is welded with the column 1.

[0057] In the technical scheme provided by the embodiment, the side wall of the column 1 is provided with a column vertical rib 6, the column vertical rib 6 is parallel to the column 1, the side wall of the column vertical rib 6 is provided with a first connecting hole 7, the end of the support 3 is provided with a bracket vertical rib 8, the side wall of the bracket vertical rib 8 is provided with a second connecting hole 9, and the bracket vertical rib 8 is connected with the column vertical rib 6 through bolts.

[0058] For example, referring to Figure 2 , two column vertical ribs 6 are arranged on the side wall of the column 1, the two column vertical ribs 6 are vertically arranged and spaced at a certain distance, and the lengths of the column vertical ribs 6 are the same as that of the column 1. The first connecting holes 7 are arranged through the side wall of the column vertical rib 6. Referring to Figure 4The support 3 is provided with two bracket vertical ribs 8 at two ends, and the bracket vertical ribs 8 are vertically arranged. The two bracket vertical ribs 8 correspond to the two column vertical ribs 6 respectively, and two second connecting holes 9 are arranged through the side wall of the bracket vertical rib 8. The bracket vertical rib 8 is connected with the corresponding column vertical rib 6 through a bolt. During installation, the two second connecting holes 9 on the side wall of the bracket vertical rib 8 are aligned with the two first connecting holes 7 on the side wall of the column vertical rib 6, and then the bolt is inserted through the first connecting hole 7, the second connecting hole 9 and the nut, so that the bracket vertical rib 8 and the column vertical rib 6 are locked and fixed, and then the support 3 and the column 1 can be locked and fixed.

[0059] The side wall of the column vertical rib 6 is provided with a plurality of first connecting holes 7, and the plurality of first connecting holes 7 are uniformly and vertically arranged.

[0060] For example, referring to Figure 2 The first connecting hole 7 is arranged on the column vertical rib 6 from the top end to the bottom end, so that the vertical position of the support 3 can be flexibly adjusted, the number of supports 3 can be flexibly increased or decreased, the installation and removal efficiency is high, and almost all components can be recycled without damage.

[0061] In the technical scheme provided in the embodiment, the bracket vertical rib 8 is connected with a bracket partition plate 10, the end of the support 3 is provided with a lap plate 11, the lap plate 11 is lapped on the bracket partition plate 10, the bracket partition plate 10 is provided with a first anchoring hole 12, the lap plate 11 is provided with a second anchoring hole 13, the first anchoring hole 12 is aligned with the second anchoring hole 13, and the bolt 14 is simultaneously inserted into the first anchoring hole 12 and the second anchoring hole 13.

[0062] For example, referring to Figures 4-6 The two bracket vertical ribs 8 are connected with an intermediate plate, the intermediate plate is connected with two bracket partition plates 10, the two bracket partition plates 10 are horizontally arranged and spaced apart by a certain distance, and the first anchoring holes 12 of the two bracket partition plates 10 are aligned. The two ends of the support 3 are each provided with two lap plates 11, and the second anchoring holes 13 of the two lap plates 11 are aligned. The two lap plates 11 are lapped on the two bracket partition plates 10, so that the two first anchoring holes 12 and the two second anchoring holes 13 are aligned, and the bolt 14 can be simultaneously inserted into the two first anchoring holes 12 and the two second anchoring holes 13.

[0063] In order to improve the stability of the lap plate 11 and the bracket partition plate 10, the bracket partition plate 10 can be provided with two first anchoring holes 12, and the corresponding lap plate 11 can be provided with two second anchoring holes 13. In this way, during installation, the two bolts 14 are inserted into the two groups of anchoring holes respectively.

[0064] In summary, the construction method of the trench foundation support system provided in the embodiment can include the following steps:

[0065] The unit body installation position is determined by measurement and line determination, and after the site is leveled, the column 1, the rib plate 2 and the support 3 are combined and assembled into a stable unit system. A long-arm backhoe excavator is used to excavate the earthwork in the unit body in layers. As the earthwork is gradually excavated, the unit system gradually sinks. When the foundation pit is deep, multiple unit systems can be used to assemble up and down, but not more than two. The verticality of the unit system is adjusted in time during the excavation and sinking process until the excavation reaches the design base elevation. The unit system is assembled along the pipeline route and the trench is excavated, and after the design section is excavated to the design elevation, the base backfilling, pipe foundation construction and pipeline installation and other work can be carried out. After the pipeline installation is completed, the inner support 3 is removed layer by layer, and after the backfilling is completed, the rib plate 2 and the column 1 are recovered in turn.

[0066] The combined assembly of the unit system can include the following steps:

[0067] (1) Uniformly punch holes on the steel plate to form column vertical ribs 6;

[0068] (2) Weld the T-shaped piece 4 and the column vertical rib 6 to the two sides of the column 1 and the pit-facing side in turn;

[0069] (3) Process the steel plate into a bracket vertical rib 8 and a bracket partition plate 10, and then weld to form a support bracket component;

[0070] (4) After measuring and positioning and leveling the site, two column 1 components are vertically fixed at the designed interval, and then the processed rib plate 2 is hoisted and inserted vertically along the T-shaped piece 4 to form an effective socket joint. The column 1 component and the rib plate 2 on the opposite side of the trench are assembled in the same way;

[0071] (5) The support bracket component is fixed on the column vertical rib 6 by bolts. The bracket height can be moved up and down according to the design requirements. Generally, one support bracket component is fixed at the top and the bottom of the column vertical rib 6;

[0072] (6) The support end connecting piece (lap joint plate 11) is fixed at both ends of the support 3. The end of the support 3 can be provided with a loose joint and a jack and other components. According to the different types of supports, bolt connection or welding can be used;

[0073] (7) The lap joint plate 11 is assembled on the support bracket component, and after aligning the anchor hole position, the bolt 14 is vertically inserted. After four supports 3 are assembled in the same way, a trench foundation support unit system is formed.

[0074] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0075] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0076] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0077] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A trench foundation pit support system characterized by, It comprises a ribbed plate (2), a support (3), and four columns (1); The four columns (1) are respectively located at the four corners of the rectangle; The ribbed plate (2) is arranged along the longitudinal edge of the rectangle, and the two ends of the ribbed plate (2) are respectively slidably connected with the two columns (1) on the same longitudinal edge; The support (3) is arranged along the transverse edge of the rectangle, and the two ends of the support (3) are respectively connected with the two columns (1) on the same transverse edge through bolts.

2. A trench foundation pit support system according to claim 1, wherein, A T-shaped piece (4) is arranged on the side wall of the column (1), the T-shaped piece (4) is parallel to the column (1), and the end of the ribbed plate (2) is provided with a sliding groove (5) matched with the T-shaped piece (4).

3. A trench foundation pit support system according to claim 2, wherein, The T-shaped piece (4) is welded with the column (1).

4. A trench foundation pit support system according to claim 1, wherein A column vertical rib (6) is arranged on the side wall of the column (1), the column vertical rib (6) is parallel to the column (1), a first connecting hole (7) is arranged on the side wall of the column vertical rib (6), a bracket vertical rib (8) is arranged at the end of the support (3), a second connecting hole (9) is arranged on the side wall of the bracket vertical rib (8), and the bracket vertical rib (8) is connected with the column vertical rib (6) through bolts.

5. A trench foundation pit support system according to claim 4, wherein, A plurality of first connecting holes (7) are arranged on the side wall of the column vertical rib (6), and the plurality of first connecting holes (7) are uniformly and vertically spaced.

6. A trench foundation pit support system according to claim 4, wherein Two column vertical ribs (6) are arranged on the side wall of the column (1), the two column vertical ribs (6) are arranged in parallel and at intervals, two bracket vertical ribs (8) are arranged at the end of the support (3), the two bracket vertical ribs (8) correspond to the two column vertical ribs (6) respectively, and the bracket vertical rib (8) is connected with the corresponding column vertical rib (6) through bolts.

7. A trench foundation pit support system according to claim 4, wherein It further comprises a bolt (14), the bracket vertical rib (8) is connected with a bracket partition plate (10), the end of the support (3) is provided with a lap plate (11), the lap plate (11) is lapped on the bracket partition plate (10), a first anchoring hole (12) is arranged on the bracket partition plate (10), a second anchoring hole (13) is arranged on the lap plate (11), the first anchoring hole (12) is aligned with the second anchoring hole (13), and the bolt (14) is simultaneously inserted into the first anchoring hole (12) and the second anchoring hole (13).

8. A trench foundation pit support system according to claim 7, wherein, The bracket vertical rib (8) is connected with two bracket partition plates (10), and the end of the support (3) is provided with two lap plates (11), and the two lap plates (11) are respectively lapped on the two bracket partition plates (10).

9. A trench foundation pit support system according to claim 1, wherein The support (3) is a steel pipe.

10. A trench foundation pit support system according to claim 1, wherein The column (1) is a steel pipe.

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