In-situ suspension protection device for existing pipeline of ultra-wide foundation pit

Abstract

The utility model relates to an ultra-wide foundation pit existing pipeline in-situ suspension protection device which comprises top beams and concrete supports, the top beams are located at the upper ends of fender posts on the two sides of a foundation pit, the concrete supports are integrally formed and poured between the two top beams and are perpendicular to each other, and the concrete supports are sequentially arranged in the length direction of the top beams. A plurality of upper supporting steel beams are placed on the adjacent concrete supports, the upper supporting steel beams are sequentially placed in the length direction of the concrete supports, two upper hanging steel beams are placed on the upper supporting steel beams, lower hanging steel beams are hung on the upper hanging steel beams through hanging rod units, and the upper hanging steel beams and the lower hanging steel beams are perpendicularly distributed. The multiple lower hoisting steel beams are sequentially arranged in the length direction of the upper hoisting steel beam, and the lower hoisting steel beams are located below the existing pipeline and used for hoisting the existing pipeline; the utility model has the advantages that the uninterrupted use of the pipeline is ensured, and the ultra-long construction period for relocating the existing pipeline is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil engineering construction, and particularly relates to an in-situ suspension protection device for existing pipelines in an ultra-wide foundation pit. Background Art

[0002] Foundation pit excavation is the foundation of infrastructure projects and an indispensable link. As urban infrastructure becomes increasingly complete, the number of underground pipelines is increasing, which makes it inevitable that foundation pit excavation will cross existing underground pipelines. If the protection measures for underground pipelines are not appropriate, the pipelines will be damaged, affecting the normal life of surrounding residents and the production and operation of enterprises, and even endangering the safety of personnel and foundation pits due to the transmission of pipeline media.

[0003] In the past, the practice of crossing pipelines in engineering projects was pipeline relocation. Pipeline relocation is to relocate existing pipelines, which not only requires coordination with the property rights department, preparation of relocation plans, and approval processes, but also requires multiple coordination departments, high difficulty and long time-consuming period. In addition, pipeline relocation requires not only the demolition of the original pipeline, but also the construction of new pipelines to ensure operation. Finally, after the construction is completed, it must be relocated, which consumes a lot of manpower and material resources, increases construction costs, and will also affect surrounding production and business activities to a certain extent. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide an in-situ suspension protection device for existing pipelines in an ultra-wide foundation pit, thereby ensuring uninterrupted use of the pipelines and reducing the overlong construction period for relocating existing pipelines.

[0005] The purpose of the utility model is achieved through the following technical scheme. The in-situ suspension protection device for existing pipelines in an ultra-wide foundation pit includes a crown beam and a concrete support. The crown beam is located at the upper end of the retaining piles on both sides of the foundation pit. The concrete support is integrally cast between the two crown beams and is perpendicular to each other. The concrete support is provided with a plurality of beams and is arranged in sequence along the length direction of the crown beam. An upper supporting steel beam is placed on adjacent concrete supports. The upper supporting steel beam is provided with a plurality of beams and is arranged in sequence along the length direction of the concrete support. Two upper hanging steel beams are placed on the upper supporting steel beam. The upper hanging steel beam is suspended with a lower hanging steel beam through a hanger unit. The upper hanging steel beam and the lower hanging steel beam are vertically distributed, and the lower hanging steel beam is provided with a plurality of beams and is arranged in sequence at equal intervals along the length direction of the upper hanging steel beam. The lower hanging steel beam is located below the existing pipeline and is used to suspend the existing pipeline.

[0006] The beneficial effects of the utility model are as follows: compared with the prior art, by constructing crown beams and concrete supports on the upper ends of the retaining piles on both sides of the foundation pit, and placing upper supporting steel beams and upper and lower hanging steel beams on the concrete supports, the uninterrupted use of pipelines is guaranteed, the production and life continuity of surrounding enterprises and residents is maintained, the overlong construction period for relocating existing pipelines is reduced, the utilization rate of manpower and machinery in the process of relocating pipelines is reduced, and the construction cost is greatly reduced.

[0007] Preferably, the upper supporting steel beam comprises two I-beams, which are welded through their respective adjacent wing plates to form the upper supporting steel beam, the length of the upper supporting steel beam being greater than or equal to 1.5m of the spacing between adjacent concrete supports, and the spacing between adjacent upper supporting steel beams being less than 2.5m; through the arrangement of the above-mentioned structure, the upper supporting steel beam is more convenient to form, and at the same time, the length of the upper supporting steel beams and the spacing between them are set to ensure their bearing capacity and stability.

[0008] Preferably, the upper hanging steel beam and the lower hanging steel beam each include two channel steels, the webs of the two channel steels are opposite to each other, and a gap is left between the two channel steels for the suspension rod unit to be inserted; the two channel steels are welded and fixed by tie plates, and the tie plates are arranged in sequence along the length direction of the channel steel, and the spacing between adjacent tie plates is 1m; through the arrangement of the above structure, while ensuring the strength, the upper hanging steel beam and the lower hanging steel beam are more convenient to form and the cost is lower.

[0009] Preferably, a plurality of reinforcing plates are welded on the web of the channel steel, and the reinforcing plates are distributed in a one-to-one correspondence with the boom units; through the arrangement of the above structure, the channel steel at the boom unit has better bearing capacity and is not easily deformed.

[0010] Preferably, both ends of the lower hanging steel beam are connected to the suspension rod units, one of the suspension rod units is connected to one of the upper hanging steel beams, and the other suspension rod unit is connected to the other upper hanging steel beam; through the arrangement of the above structure, the force on the upper and lower hanging steel beams is more uniform, and at the same time, the stability of the entire device in hoisting existing pipelines is ensured to be better.

[0011] Preferably, the hanger unit includes a steel pad, a bolt and a round steel hanger, one end of the round steel hanger is inserted in the gap of the upper hanging steel beam, and the other end of the round steel hanger is inserted in the gap of the lower hanging steel beam, and both ends of the round steel hanger are provided with external threads, the two ends of the round steel hanger pass through the through holes provided in the steel pad, and are tightened and fixed by the bolts, and the steel pad is limited and fixed on the upper hanging steel beam and the lower hanging steel beam; through the arrangement of the above structure, the installation between the round steel hanger and the upper and lower hanging steel beams is more convenient, and at the same time, through the bolt tightening structure, the horizontality of the lower hanging steel beam can be adjusted, and the hoisting force of the existing pipeline is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the retaining piles near the existing pipeline range of the utility model.

[0013] Figure 2 It is a structural schematic diagram between the crown beam and the concrete support of the utility model.

[0014] Figure 3 It is a three-dimensional structural schematic diagram of an existing pipeline in-situ suspension protection device of the utility model.

[0015] Figure 4 It is a schematic diagram of the longitudinal section structure of the existing pipeline in-situ suspension protection device of the utility model.

[0016] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of an existing pipeline in-situ suspension protection device.

[0017] Figure 6 The utility model is a schematic diagram of the structure of the existing pipeline in-situ suspension protection device viewed from above.

[0018] Figure 7 It is a structural schematic diagram of the upper supporting steel beam, the upper hanging steel beam and the suspension rod unit of the utility model.

[0019] Figure 8 It is a structural schematic diagram between the lower hanging steel beam and the suspension rod unit of the utility model.

[0020] The numbers in the attached drawings are: 1. crown beam; 2. concrete support; 3. foundation pit; 4. retaining piles; 5. upper supporting steel beam; 6. upper hanging steel beam; 7. hanger unit; 8. lower hanging steel beam; 9. existing pipeline; 10. channel steel; 11. tie plate; 12. reinforcement plate; 71. steel pad; 72. bolt; 73. round steel hanger. DETAILED DESCRIPTION

[0021] The following is a detailed introduction to the utility model in conjunction with the accompanying drawings: Figures 1 to 8As shown, the utility model includes a crown beam 1 and a concrete support 2, the crown beam 1 is located at the upper end of the retaining piles 4 on both sides of the foundation pit 3, the concrete support 2 is integrally formed and cast between the two crown beams 1 and is perpendicular to each other, a plurality of concrete supports 2 are provided and are arranged in sequence along the length direction of the crown beam 1, an upper support steel beam 5 is placed on the adjacent concrete supports 2, a plurality of upper support steel beams 5 are provided and are arranged in sequence along the length direction of the concrete supports 2, two upper hanging steel beams 6 are placed on the upper support steel beam 5, the upper hanging steel beam 6 is suspended by a lower hanging steel beam 8 through a hanger unit 7, the upper hanging steel beam 6 and the lower hanging steel beam 8 are vertically distributed, a plurality of lower hanging steel beams 8 are provided and are arranged in sequence at equal intervals along the length direction of the upper hanging steel beam 6, the lower hanging steel beam 8 is located below the existing pipeline 9 and is used to suspend the existing pipeline 9.

[0022] The upper support steel beam 5 includes two I-beams 51, which are welded through their respective adjacent wing plates to form the upper support steel beam 5. The length of the upper support steel beam 5 is greater than or equal to 1.5m of the spacing between adjacent concrete supports 2, and the spacing between adjacent upper support steel beams 5 is less than 2.5m.

[0023] The upper hanging steel beam 6 and the lower hanging steel beam 8 each include two channel steels 10, the webs of the two channel steels 10 are opposite, and a gap is left between the two channel steels 10 for the suspension rod unit 7 to be inserted; the two channel steels 10 are welded and fixed by a tie plate 11, and the tie plates 11 are arranged in sequence along the length direction of the channel steel 10, and the spacing between adjacent tie plates 11 is 1m.

[0024] A plurality of reinforcing plates 12 are welded on the web of the channel steel 10, and the reinforcing plates 12 are distributed one-to-one with the hanger units 7; the reinforcing plates have a specification of 140 mm × 120 mm, are fully welded, and the weld width is not less than 8 mm.

[0025] Both ends of the lower hanging steel beam 8 are connected with a suspension rod unit 7, wherein one suspension rod unit 7 is connected to one upper hanging steel beam 6, and the other suspension rod unit 7 is connected to the other upper hanging steel beam 6. The spacing between adjacent lower hanging steel beams 8 is not greater than 500mm.

[0026] The suspension rod unit 7 includes a steel pad 71, a bolt 72 and a round steel suspension rod 73. One end of the round steel suspension rod 73 is inserted into the gap of the upper suspension steel beam 6, and the other end of the round steel suspension rod 73 is inserted into the gap of the lower suspension steel beam 8. Both ends of the round steel suspension rod 73 are provided with external threads. Both ends of the round steel suspension rod 73 pass through the through holes provided in the steel pad 71 and are tightened and fixed by bolts 72. The steel pad 71 is limited and fixed on the upper suspension steel beam 6 and the lower suspension steel beam 8.

[0027] The hoisting method of the utility model is as follows: first, according to the drawings and the actual situation on site, the position of the existing pipeline 9 is determined, and the pouring order of the retaining piles 4 adjacent to the pipeline 9 is adjusted to avoid the retaining piles 4 intersecting the existing pipeline 9, and the retaining piles 4 on both sides of the foundation pit 3 outside the range of the existing pipeline 9 are constructed; then, the crown beam 1 and the concrete support 2 are poured at the upper end of the retaining pile 4, and the earthwork is excavated in the foundation pit 3 to the depth range required for the suspension protection treatment of the existing pipeline 9; finally, an upper supporting steel beam 5 is placed on the adjacent concrete support 2 above the existing pipeline 9, and two upper hanging steel beams 6 are placed on the upper supporting steel beam 5, and the upper hanging steel beam 6 is hoisted with a lower hanging steel beam 8 through a hanger unit 7, and the lower hanging steel beam 8 is located below the existing pipeline 9 and is used to suspend the existing pipeline 9.

[0028] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An in-situ suspension protection device for existing pipelines in an ultra-wide foundation pit, comprising a cap beam (1) and a concrete support (2), characterized in that: The crown beam (1) is located at the upper ends of the retaining piles (4) on both sides of the foundation pit (3); the concrete support (2) is integrally formed and cast between the two crown beams (1) and is perpendicular to each other; the concrete support (2) is provided with a plurality of beams and is sequentially arranged along the length direction of the crown beam (1); an upper support steel beam (5) is placed on the adjacent concrete support (2); the upper support steel beam (5) is provided with a plurality of beams and is sequentially arranged along the length direction of the concrete support (2); two upper hanging steel beams (6) are placed on the upper support steel beam (5); the upper hanging steel beam (6) is suspended with a lower hanging steel beam (8) through a suspension rod unit (7); the upper hanging steel beam (6) and the lower hanging steel beam (8) are vertically distributed; the lower hanging steel beam (8) is provided with a plurality of beams and is sequentially arranged at equal intervals along the length direction of the upper hanging steel beam (6); the lower hanging steel beam (8) is located below the existing pipeline (9) and is used to suspend the existing pipeline (9).

2. The in-situ suspension protection device for existing pipelines in ultra-wide foundation pits according to claim 1 is characterized by: The upper support steel beam (5) comprises two I-beams (51), and the two I-beams (51) are welded through respective adjacent wing plates to form the upper support steel beam (5). The length of the upper support steel beam (5) is greater than or equal to 1.5 m of the spacing between adjacent concrete supports (2), and the spacing between adjacent upper support steel beams (5) is less than 2.5 m.

3. The in-situ suspension protection device for existing pipelines in ultra-wide foundation pits according to claim 1 is characterized by: The upper hanging steel beam (6) and the lower hanging steel beam (8) each include two channel steels (10), the webs of the two channel steels (10) are opposite to each other, and a gap is left between the two channel steels (10) for the suspension rod unit (7) to be inserted; the two channel steels (10) are welded and fixed by a tie plate (11), and the tie plates (11) are arranged in sequence along the length direction of the channel steel (10), and the spacing between adjacent tie plates (11) is 1m.

4. The in-situ suspension protection device for existing pipelines in ultra-wide foundation pits according to claim 3 is characterized by: A plurality of reinforcing plates (12) are welded to the web of the channel steel (10), and the reinforcing plates (12) are distributed in a one-to-one correspondence with the suspension rod units (7).

5. The in-situ suspension protection device for existing pipelines in ultra-wide foundation pits according to claim 1 is characterized by: Both ends of the lower hanging steel beam (8) are connected to the suspension rod units (7), wherein one suspension rod unit (7) is connected to one upper hanging steel beam (6), and the other suspension rod unit (7) is connected to the other upper hanging steel beam (6).

6. The in-situ suspension protection device for existing pipelines in ultra-wide foundation pits according to claim 5 is characterized by: The suspension rod unit (7) includes a steel pad (71), a bolt (72) and a round steel suspension rod (73), one end of the round steel suspension rod (73) is inserted into the gap of the upper suspension steel beam (6), and the other end of the round steel suspension rod (73) is inserted into the gap of the lower suspension steel beam (8), and both ends of the round steel suspension rod (73) are provided with external threads, and the two ends of the round steel suspension rod (73) pass through the through holes provided in the steel pad (71) and are tightened and fixed by the bolt (72), and the steel pad (71) is limited and fixed on the upper suspension steel beam (6) and the lower suspension steel beam (8).

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