Protective structure for protecting box culvert pipeline crossing foundation pit

Abstract

The utility model discloses a protective structure for protecting a box culvert pipeline crossing a foundation pit, which comprises a plurality of suspension beams, a plugging component and a support channel steel, the plurality of suspension beams are distributed at the upper end of the support channel steel at intervals, one end of each suspension beam is used for hoisting the box culvert, and the other end of each suspension beam is used for plugging the box culvert. The other end of each suspension beam is fixed to a first concrete inner support of the foundation pit, the supporting channel steel penetrates through the bottom of the box culvert and supports the box culvert, the supporting channel steel is further transversely arranged on a second concrete inner support of the foundation pit, and the plugging assemblies are fixed to the two ends of the box culvert. The two ends of the box culvert can be plugged through the plugging assembly, the box culvert is hoisted by the multiple suspension beams, the transverse supporting channel steel is supported in the second concrete to support the box culvert, the box culvert is supported through the supporting channel steel, it can be guaranteed that the box culvert does not sink when foundation pit earthwork is excavated, and the box culvert and pipelines are protected; the protection structure is simple in design, the construction cost input can be reduced, and the normal progress of the construction progress is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foundation pit construction technical field especially relates to a protection structure for protecting box culvert pipeline acrossing foundation pit. BACKGROUND

[0002] In recent years, with the rapid growth of urban population, the urban ground traffic system is increasingly congested, and the urban subway traffic is rapidly developed in large and medium-sized cities.

[0003] The existing subway transfer channel has a rectangular rainwater box culvert under the ground of the foundation pit in the construction process, and before the pile foundation construction of the bored pile, the soil above the rainwater box culvert needs to be dug open. Due to the existence of the underground foundation pit box culvert and cable pipeline, the bored pile is prone to conflict with the underground box culvert and pipeline during the construction process. In the construction process, some construction units forcibly construct to catch up with the construction period, which may force the underground box culvert and pipeline to deform or be damaged. The underground box culvert and pipeline are important infrastructure for urban operation, and these box culverts and pipelines cannot be interrupted, especially the rainwater box culvert related to flood control and drainage, which cannot be interrupted. However, the underground box culvert pipeline often appears at the foundation pit of the transfer channel, and it is difficult to avoid. Therefore, the underground box culvert pipeline needs to be protected.

[0004] At present, the protection method of the underground box culvert pipeline mainly is to relocate or shift the box culvert and underground pipeline, and the protection of the underground box culvert pipeline has the following disadvantages:

[0005] 1) The construction cost required for relocation or shifting of the underground box culvert and pipeline is high, which increases the input of manual labor;

[0006] 2) The relocation or shifting of the underground box culvert and pipeline requires a long construction time, which prolongs the construction period and delays the construction progress. INVENTION CONTENTS

[0007] In view of the technical problems existing in the prior art of foundation pit protection structure, the technical problem to be solved by the utility model is to provide a protection structure which can block the two ends of the box culvert, suspend the box culvert by a plurality of suspension beams, support the box culvert in the second concrete by a crosswise support channel steel, support the box culvert by the support channel steel, ensure that the box culvert does not sink during excavation of the foundation pit earthwork, protect the underground box culvert and pipeline in situ, greatly simplify the protection measures, reduce the construction cost input, be beneficial to reducing the input of manual labor, and ensure that the construction progress proceeds normally.

[0008] In order to solve the above technical problems, the utility model provides a kind of protection structure for protecting across foundation pit box culvert pipeline, the box culvert pipeline includes box culvert and the power pipeline located above box culvert, the top of foundation pit is poured with first concrete inner support, the bottom of foundation pit is poured with second concrete inner support, the protection structure includes several suspension beams, plugging assembly, support channel steel, several suspension beams are mutually spaced distribution in the upper end of support channel steel, the end of each suspension beam is lifted box culvert, the other end of each suspension beam is fixed with the first concrete inner support of foundation pit, the support channel steel is passed from box culvert bottom and holds box culvert, the support channel steel is also transversely arranged on the second concrete inner support of foundation pit, the plugging assembly is fixed in the both ends of box culvert.

[0009] Further, the continuous wall surface of the top end of the foundation pit is provided with a plurality of suspension points, the plurality of suspension points are mutually spaced, and an expansion bolt is fixed at each suspension point.

[0010] Further, the protection structure includes a plurality of pipeline suspension assembly groups, the plurality of pipeline suspension assembly groups are mutually spaced, one end of each pipeline suspension assembly group is sleeved with the power pipeline to suspend and protect the power pipeline above the box culvert, and the other end of the pipeline suspension assembly group is fixed at the suspension point of the continuous wall surface of the top end of the foundation pit.

[0011] Further, each pipeline suspension assembly group includes a lifting rope and a basket bolt, one end of the lifting rope is sleeved with the power pipeline, the other end of the lifting rope is connected with one end of the basket bolt, and the other end of the basket bolt is fixed at the suspension point of the top end of the foundation pit by the expansion bolt.

[0012] Further, the plugging assembly includes a water stop steel plate and an angle steel, the angle steel is arranged on both sides of the water stop steel plate, and both sides of the water stop steel plate are integrally welded with the angle steel and fixed with the side wall of the box culvert.

[0013] Further, the water stop steel plate is in a concave water stop steel plate structure.

[0014] Further, a brick wall is built at the fixed position of the water stop steel plate and the side wall of the box culvert.

[0015] Compared with the prior art, the scheme of the utility model at least includes the following beneficial effects:

[0016] The utility model discloses a protection structure includes a plurality of suspension beam, plugging subassembly, support channel steel, a plurality of suspension beam interval distribution in the upper end of support channel steel, every suspension beam's one end lifts the box culvert, every suspension beam's other end is fixed with the first concrete internal support of foundation pit, and support channel steel passes through from the bottom of box culvert and holds up the box culvert, and support channel steel is also transversely placed on the second concrete internal support of foundation pit, and plugging subassembly is fixed in both ends of box culvert. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the utility model embodiment, the drawings of the embodiment will be briefly introduced below.

[0018] Figure 1 It is the planar arrangement drawing that the protection structure of the utility model is used for the box culvert pipeline horizontal crossing foundation pit;

[0019] Figure 2 It is the utility model Figure 1 sectional view of 1-1;

[0020] Figure 3 It is the large sample drawing that the box culvert end of the utility model adopts plugging subassembly to block;

[0021] Figure 4 It is the use state schematic diagram of the pipeline suspension subassembly for electric power pipeline suspension of the utility model.

[0022] In the drawing, box culvert 1, side wall 11, electric power pipeline 2, water supply pipeline 3, protection structure 4, suspension beam 41, plugging subassembly 42, water stop steel plate 421, brick wall 422, waterproof mortar layer 423, support channel steel 43, foundation pit 5, first concrete internal support 51, second concrete internal support 52, bored pile 6, continuous wall surface 7, expansion bolt 71, pipeline suspension subassembly 8, lifting rope 81, flower basket bolt 82. DETAILED DESCRIPTION

[0023] The technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings of the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] AsFigures 1-4 The utility model discloses a protection structure 4 for the protection of the box culvert pipeline across the foundation pit 5, the box culvert pipeline includes the box culvert 1 and the power pipeline 2 above the box culvert 1, the first concrete inner support 51 is poured on the top of the foundation pit 5, the second concrete inner support 52 is poured on the bottom of the foundation pit 5, the protection structure 4 includes several suspension beams 41, blocking assembly 42, support channel steel 43, several suspension beams 41 are spaced apart and distribute on the upper end of support channel steel 43, one end of every suspension beam 41 hoists the box culvert 1, the other end of every suspension beam 41 is fixed with the first concrete inner support 51 of the foundation pit 5, and the support channel steel 43 passes through from the bottom of the box culvert 1 and holds the box culvert 1, and the support channel steel 43 is also transversely arranged on the second concrete inner support 52 of the foundation pit 5, and the blocking assembly 42 is fixed to the both ends of the box culvert 1. When being specifically realized, the support channel steel 43 of the utility model adopts 40b channel steel 1500mm, the box culvert 1 across the foundation pit 5 is the concrete box culvert 1, the outer diameter size of the box culvert 1 is 3.1m*2.6m, the reinforcing steel of the end of the box culvert 1 is sleeved with the sleeve pipe, the sleeve pipe can select 20mm PVC sleeve pipe to carry out the protection, and the water supply pipeline 3 is also arranged above the power pipeline 2, and the power pipeline 2 is 10KV power pipe, and the water supply pipeline 3 is φ300mm water supply pipe. The blocking assembly 42 of the application blocks the both ends of the box culvert 1, avoids the water flow of the upstream and downstream of the foundation pit 5 into the box culvert 1, sets up several suspension beams 41 on the first concrete inner support 51 and hoists the box culvert 1, and sets up the support channel steel 43 on the second concrete inner support 52 and holds the box culvert 1, through setting up the support channel steel 43 and holding the box culvert 1, can guarantee that the box culvert 1 does not sink when the earthwork of the foundation pit 5 is excavated, and through the cooperation of the support channel steel 43 and the suspension beam 41, the suspension of the whole box culvert 1 is more reliable and safe, adopts multiple measures to protect the box culvert pipeline, the bored pile 6 of the both sides of the box culvert 1 adopts cement slurry to reinforce the soil and stop water, also avoids the conflict of the bored pile 6 of the foundation pit 5 with the box culvert pipeline during construction, ensures the normal operation of the box culvert 1, guarantees the safety and stability of the structure of the box culvert 1, also avoids affecting the construction of the foundation pit 5, is favorable for the construction of the foundation pit 5, improves the construction efficiency of the foundation pit 5.

[0025] In the embodiment, the sealing assembly 42 comprises a water stop steel plate 421 and angle steels, the angle steels are arranged on two sides of the water stop steel plate 421, the two sides of the water stop steel plate 421 are welded with the angle steels to be integrated and then are fixed with the side wall 11 of the box culvert 1, and the water stop steel plate 421 is in a concave structure. In the specific implementation, the water stop steel plate 421 with a thickness of 3 mm can be selected, the water stop steel plate 421 is cut into a concave shape, the angle steels are welded on the two sides of the water stop steel plate 421, the welded angle steels have a thickness of 3 mm, and the two sides of the water stop steel plate 421 are welded with the angle steels and then are fixed with the side wall 11 of the box culvert 1. In the specific implementation, a brick wall 422 is built at the fixed position of the water stop steel plate 421 and the side wall 11 of the box culvert 1, the brick wall 422 has a width of 3.1 m and a height of 2.2 m, the water stop steel plate 421, the angle steels and the brick wall 422 are matched to seal the two ends of the box culvert 1, a waterproof mortar layer 423 is coated on the surface of the brick wall 422, the waterproof mortar layer 423 has a thickness of 10 mm, the waterproof mortar layer 423 can prevent rainwater from invading the box culvert 1 and reduce the weight of the box culvert 1.

[0026] The utility model discloses a continuous wall surface 7 of top of foundation pit 5 is provided with a plurality of suspending points, a plurality of suspending points are mutually spaced distribution, each suspending point is fixed with expansion bolt 71.

[0027] In the embodiment, the protection structure 4 comprises a plurality of pipeline suspension assemblies 8, the plurality of pipeline suspension assemblies 8 are mutually spaced distribution, one end of each pipeline suspension assembly 8 is sleeved with the power pipeline 2 to suspend and protect the power pipeline 2 above the box culvert 1, and the other end of the pipeline suspension assembly 8 is fixed at the suspending point of the continuous wall surface 7 of the top of the foundation pit 5. Each pipeline suspension assembly 8 comprises a lifting rope 81 and a basket bolt 82, one end of the lifting rope 81 is sleeved with the power pipeline 2, the other end of the lifting rope 81 is connected with one end of the basket bolt 82, and the other end of the basket bolt 82 is fixed at the suspending point of the top of the foundation pit 5 by the expansion bolt 71. In the specific implementation, the lifting rope 81 is a 6×19A16 steel wire rope, the basket bolt 82 is used to fix the lifting rope 81, and the basket bolt 82 is fixed at the continuous wall surface 7 of the top of the foundation pit 5 by the expansion bolt 71. The utility model suspends and protects the power pipeline 2 in situ by arranging the pipeline suspension assembly 8, avoids the early relocation of the power pipeline 2, for example, can avoid the pipeline relocation before the construction of the station and the entrance, reduces the influence of the power pipeline 2 relocation on the society, shortens the relocation time of the early power pipeline 2, effectively saves the construction time of the project, saves the relocation and resetting cost of the power pipeline 2, reduces the influence on the surrounding environment, and reduces the construction cost.

[0028] The above merely describes the preferred embodiments of the present application and is not used to limit the scope of the present application, and any equivalent changes made according to the claims of the present application shall fall within the scope of the present application.

Claims

1. A protection structure for protecting a pipeline across a foundation pit box culvert, characterized by: The box culvert pipeline is arranged in the foundation pit, the box culvert pipeline comprises a box culvert and a power pipeline arranged above the box culvert, a first concrete inner support is arranged at the top of the foundation pit, and a second concrete inner support is arranged at the bottom of the foundation pit, the protection structure comprises a plurality of suspension beams, a blocking assembly and a support channel steel, the plurality of suspension beams are arranged at the upper end of the support channel steel in a spaced manner, one end of each suspension beam is arranged to suspend the box culvert, and the other end of each suspension beam is fixed to the first concrete inner support of the foundation pit, the support channel steel penetrates the bottom of the box culvert and supports the box culvert, and the support channel steel is arranged on the second concrete inner support of the foundation pit in a transverse manner, and the blocking assembly is fixed to the two ends of the box culvert.

2. The protection structure for protecting a pipeline across a foundation pit box culvert according to claim 1, characterized in that: The continuous wall surface at the top end of the foundation pit is provided with a plurality of suspension points arranged in a spaced manner, and an expansion bolt is arranged at each suspension point.

3. The protection structure for protecting a pipeline across a foundation pit box culvert according to claim 1, characterized in that: The protection structure comprises a plurality of pipeline suspension assemblies arranged in a spaced manner, one end of each pipeline suspension assembly is arranged to surround the power pipeline so as to suspend and protect the power pipeline above the box culvert, and the other end of the pipeline suspension assembly is fixed to the suspension point of the continuous wall surface at the top end of the foundation pit.

4. The protection structure for protecting a pipeline across a foundation pit box culvert according to claim 3, characterized in that: Each pipeline suspension assembly comprises a lifting rope and a basket bolt, one end of the lifting rope is arranged to surround the power pipeline, the other end of the lifting rope is connected to one end of the basket bolt, and the other end of the basket bolt is fixed to the suspension point at the top end of the foundation pit through the expansion bolt.

5. The protection structure for protecting a pipeline across a foundation pit box culvert according to claim 1, characterized in that: The blocking assembly comprises a water stop steel plate and an angle steel, the angle steel is arranged on both sides of the water stop steel plate, and both sides of the water stop steel plate are integrally welded with the angle steel and then fixed to the side wall of the box culvert.

6. The protection structure for protecting pipelines across a foundation pit box culvert according to claim 5, characterized in that: The water stop steel plate is in a concave water stop steel plate structure.

7. The protection structure for protecting pipelines across a foundation pit box culvert according to claim 5, characterized in that: A brick wall is arranged at the fixed position of the water stop steel plate and the side wall of the box culvert.

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