Important pipeline protection structure intruding into road structure layer

Abstract

The utility model relates to an important pipeline protection structure intruding into a road structure layer, which comprises a protection structure positioned below a roadway of a designed road and used for protecting an important pipeline, and the protection structure comprises a cast-in-situ bored pile foundation or pier foundation, a top beam and a top plate, the cast-in-situ bored pile foundations or pier foundations are arranged on the two sides of the important pipeline, the crown beam is arranged at the top ends of the cast-in-situ bored pile foundations or pier foundations, the top plate is arranged above the important pipeline and located on the surface of the designed road, and the space between the top of the important pipeline and the top plate is filled with light filler. And a filling filler is filled between the top plate and the light filler. By combining the characteristics of retaining structures such as cast-in-situ bored pile foundations or pier foundations, various forms such as top plates and the like, current important pipelines can be protected to the maximum extent, disturbance to the pipelines in the construction process of the protection structure is reduced, and good overall stability and practicability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of road pipelines, in particular to an important pipeline protection structure that invades a road structural layer. Background Art

[0002] With the continuous acceleration of urban infrastructure construction, the setting of underground pipelines has become more and more complex and diversified, such as cables, water pipes, gas pipes, military cables, etc., which play a vital role in ensuring the normal operation of the city. However, during the construction of municipal roads, due to the limitations of construction technology and methods, damage to important pipelines often occurs. Not only does it affect the normal operation of urban infrastructure, it may also cause safety accidents and pose a threat to people's lives and property. During the project construction process, how to ensure the safety of important pipelines is an important problem in municipal infrastructure construction. Common pipeline protection solutions mostly use conventional retaining walls. The construction of this type of structure has a large disturbance to important pipelines and is generally costly. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an important pipeline protection structure invading the road structure layer in view of the deficiencies of the above-mentioned prior art.

[0004] The utility model provides a technical solution to the above-mentioned technical problem as follows: a protective structure for an important pipeline intruding a road structure layer, comprising a protective structure located below a carriageway of a designed road and used to protect the important pipeline, the protective structure comprising a bored cast-in-place pile foundation or a pier foundation, a crown beam and a top plate, the bored cast-in-place pile foundation or the pier foundation being arranged on both sides of the important pipeline, the crown beam being arranged at the top of the bored cast-in-place pile foundation or the pier foundation, the top plate being arranged above the important pipeline and located on the surface of the designed road, a lightweight filler being filled between the top of the important pipeline and the top plate, and a filling filler being filled between the top plate and the lightweight filler.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows:

[0006] Further: the bored cast-in-place pile foundation or pier foundation is made of reinforced concrete and is in direct contact with the foundation soil.

[0007] The beneficial effects of the above further scheme are: the reinforced concrete material has strong lateral stiffness, providing lateral support for important pipelines to avoid squeezing of important pipelines by soil on both sides; it is in direct contact with the foundation soil and also serves as the basis of the protective structure to provide vertical bearing capacity.

[0008] Further: the cap beam is made of reinforced concrete, its width is 100mm wider than the two sides of the bored pile foundation or pier foundation, and its height is 800-1000mm.

[0009] The beneficial effects of the above further scheme are: the bored cast-in-place pile foundations or pier foundations arranged at intervals and dispersedly are connected into a whole through the crown beam, thereby enhancing the overall stiffness and bearing capacity of the structure; at the same time, the crown beam serves as a support for the ground top plate, fixes and constrains the reinforced concrete top plate, and effectively connects the reinforced concrete top plate with the bored cast-in-place pile foundation or pier foundation.

[0010] Further: the top plate is a reinforced concrete plate, the thickness of which is not less than 1 / 8 of its span.

[0011] The beneficial effect of the above further solution is that the important pipeline and the designed road are isolated by the top plate, the ground vehicle load is directly borne, and the load is transferred to the cap beam, and then to the bored pile foundation or pier foundation.

[0012] Further: the lightweight filler is plain concrete or foam lightweight concrete.

[0013] The beneficial effect of the above further solution is that the lightweight filler wraps the important pipeline, has a certain isolation effect, and at the same time improves the overall rigidity of the important pipeline.

[0014] Further: the buffer filler is a polyethylene closed-cell foam board.

[0015] The beneficial effect of the above further solution is that the buffering filler is provided to form a buffer zone. When the vehicle load acts on the top plate, the top plate will be deformed. The buffer zone can effectively prevent the deformation of the top plate from directly affecting important pipelines.

[0016] Further: the important pipeline protection structure invading the road structure layer also includes connecting steel bars, which are arranged in the crown beam and the top plate above the crown beam, and connect the crown beam and the top plate.

[0017] The beneficial effect of the above further solution is that by providing the connecting steel bars, the top plate can better withstand the dynamic load of the vehicle, improve the durability of the protective structure, and protect the safety of important pipelines.

[0018] The important pipeline protection structure intruding into the road structure layer of the utility model has the following advantages:

[0019] 1. The structural components of the utility model can coordinate and balance the forces, the structure size is small, the occupied area is small, the demand for construction sites for pipeline protection is reduced, and the scope of application is wider; especially for road projects where the top of important pipelines is covered with thin soil and invades the road structure layer, affecting the subsequent construction of the project, the utility model solves this kind of problem well.

[0020] 2. The utility model has a simple structure and is easy to construct; it adopts a pile foundation or a pier foundation, the construction excavation working surface is small, the disturbance to important pipelines during the implementation process is small, and the safety of important pipelines can be better guaranteed.

[0021] 3. The utility model cleverly combines concrete wrapping protection with the frame structure. Even if the pipeline invades the road structure layer, it can still ensure that the important pipeline can withstand a more unfavorable external environment.

[0022] 4. The utility model arranges a buffer filler between the top plate and the filler, which can allow a certain deformation of the top plate structure. This moderate deformation allowable value further enhances the applicability of the protective structure.

[0023] 5. The structural materials and structural forms adopted by the utility model can be flexibly adjusted according to the actual situation on site, which is practical and convenient.

[0024] 6. The overall layout of the utility model is flexible, the structure is safe and reliable, and the quality is controllable, which can effectively ensure the safety of existing pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of an important pipeline protection structure that invades a road structure layer according to an embodiment of the utility model.

[0026] In the figure, the components represented by the reference numerals are as follows:

[0027] 1. Bored pile foundation or pier foundation, 2. Cap beam, 3. Top plate, 4. Filling material, 5. Lightweight fill material, 6. Connecting steel bars, 7. Important pipelines, 8. Designed roads. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] like Figure 1 As shown, a protective structure for an important pipeline intruding a road structure layer comprises a protective structure located below a carriageway of a designed road 8 and used to protect an important pipeline 7, the thickness of soil covering the top of the important pipeline 7 is not greater than 0.8 m, the protective structure comprises a bored cast-in-place pile foundation or pier foundation 1, a crown beam 2 and a top plate 3, the bored cast-in-place pile foundation or pier foundation 1 is arranged on both sides of the important pipeline 7, the crown beam 2 is arranged at the top of the bored cast-in-place pile foundation or pier foundation 1, the top plate 3 is arranged above the important pipeline 7 and located on the surface of the designed road 8, a lightweight filler 5 is filled between the top of the important pipeline 7 and the top plate 3, and a filling filler 4 is filled between the top plate 3 and the lightweight filler 5.

[0030] In one or more embodiments of the utility model, the bored pile foundation or pier foundation 1 is made of reinforced concrete and is in direct contact with the foundation soil. The reinforced concrete material has strong lateral stiffness, provides lateral support for the important pipeline 7, and prevents the soil on both sides from squeezing the important pipeline 7; it is in direct contact with the foundation soil and also serves as the basis of the protective structure to provide vertical bearing capacity.

[0031] In practice, the bored cast-in-place pile foundation or pier foundation 1 is located on both sides of the important pipeline 7. When the road foundation soil is clay, pier foundation can be used, and when the road foundation soil is silty soil, bored cast-in-place piles can be used. The bored cast-in-place pile foundation or pier foundation 1 is made of reinforced concrete and should meet the requirements of embedding depth. The horizontal bearing capacity is determined by controlling the deformation of the top surface of the foundation. The "Technical Code for Building Slope Engineering" GB50330-2013 Article 13.2.9 stipulates that the deformation limit is 10mm. The vertical bearing capacity is mainly composed of the side friction resistance and end resistance of the foundation soil. The length, diameter and spacing are determined according to the required horizontal bearing capacity and vertical bearing capacity, and the reinforcement is determined by calculating the foundation compressive and bending bearing capacity; the foundation diameter is generally 800-1200mm, and the spacing is generally 1000-2000mm.

[0032] In one or more embodiments of the utility model, the crown beam 2 is made of reinforced concrete, and its width is 100mm wider than the two sides of the bored pile foundation or pier foundation 1, and the height is 800-1000mm. The bored pile foundation or pier foundation 1 arranged at intervals and dispersedly is connected into a whole by the crown beam 2, thereby enhancing the overall rigidity and bearing capacity of the structure; at the same time, the crown beam 2 serves as a support for the ground top plate, fixes and constrains the reinforced concrete top plate 3, and effectively connects the reinforced concrete top plate 3 with the bored pile foundation or pier foundation 1.

[0033] In one or more embodiments of the utility model, the top plate 3 is a reinforced concrete plate with a thickness not less than 1 / 8 of its span. The top plate 3 isolates the important pipeline 7 and the designed road 8, directly bears the ground vehicle load, and transfers the load to the cap beam 2, and then to the bored pile foundation or pier foundation 1.

[0034] In one or more embodiments of the present invention, the lightweight filler 5 is made of plain concrete or foam lightweight concrete. The lightweight filler 5 wraps the important pipeline 7, has a certain isolation effect, and improves the overall rigidity of the important pipeline 7.

[0035] If the important pipeline 7 is sensitive to the upper pressure, foam lightweight concrete can be used; for the existing pipeline, generally only the part above the center line of the pipeline is filled with concrete to disturb the important pipeline 7 as little as possible.

[0036] In one or more embodiments of the utility model, the buffer filler 4 is a polyethylene closed-cell foam board. By providing the buffer filler 4 to form a buffer zone, when the vehicle load acts on the top plate 3, the top plate 3 will be deformed, and the buffer zone can effectively prevent the deformation of the top plate 3 from directly affecting the important pipeline 7.

[0037] It should be noted that the thickness of the lightweight filler 5 and the buffer filler 4 inside the pipe top of the important pipeline 7 is not fixed, and can be flexibly adjusted according to the span of the top plate 3 and the road grade of the designed road 8. When the top plate 3 is greatly deformed, its influence can be eliminated by thickening the buffer filler 4. This solution is flexible, economical and practical.

[0038] In one or more embodiments of the utility model, the important pipeline protection structure intruding the road structure layer further includes connecting steel bars 6, which are arranged in the crown beam 2 and the top plate 3 above the crown beam 2, and connect the crown beam 2 and the top plate 3. By arranging the connecting steel bars 6, the top plate 3 can better withstand the dynamic load of the vehicle, improve the durability of the protection structure, and protect the safety of important pipelines. Here, the connecting steel bars 6 are generally made of grade 3 steel HRB400, with a diameter of 12-14mm and a spacing of generally 150mm.

[0039] The important pipeline protection structure intruding the road structure layer of the utility model, under the front embankment for protecting the important pipeline, combines the respective characteristics of various forms such as bored cast-in-place pile foundation or pier foundation, reinforced concrete top plate and concrete pipe-wrapped structure, etc., can protect the existing important pipeline to the maximum extent and reduce the disturbance to the pipeline during the construction of the protection structure. At the same time, although the pipeline invades the designed road structure layer, it will not affect the construction of the road and the normal use of the road in the later period; the protection structure is reasonably stressed, and its height and width are flexibly set. The lightweight filler inside the pipe top and the buffer filler between the top plate and the filler can be flexibly selected according to needs. The reserved steel bars between the crown beam and the top plate increase the integrity and rigidity of the protection structure. It is particularly suitable for the important pipeline protection project intruding the road structure layer, and has good overall stability and practicality.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An important pipeline protection structure invading the road structure layer, characterized by: The invention comprises a protective structure located under a carriageway of a designed road (8) and used for protecting an important pipeline (7), the protective structure comprising a bored cast-in-place pile foundation or a pier foundation (1), a cap beam (2) and a top plate (3), the bored cast-in-place pile foundation or the pier foundation (1) being arranged on both sides of the important pipeline (7), the cap beam (2) being arranged at the top of the bored cast-in-place pile foundation or the pier foundation (1), the top plate (3) being arranged above the important pipeline (7) and located on the surface of the designed road (8), a lightweight filler (5) being filled between the top of the important pipeline (7) and the top plate (3), and a filling filler (4) being filled between the top plate (3) and the lightweight filler (5).

2. The important pipeline protection structure invading the road structure layer according to claim 1 is characterized by: The bored cast-in-place pile foundation or pier foundation (1) is made of reinforced concrete and is in direct contact with the foundation soil.

3. The important pipeline protection structure invading the road structure layer according to claim 1 is characterized by: The cap beam (2) is made of reinforced concrete, and its width is 100 mm wider than the two sides of the bored pile foundation or pier foundation (1), and its height is 800-1000 mm.

4. The important pipeline protection structure invading the road structure layer according to claim 1 is characterized by: The top plate (3) is a reinforced concrete plate, the thickness of which is not less than 1 / 8 of its span.

5. The important pipeline protection structure invading the road structure layer according to claim 1 is characterized by: The lightweight filler (5) is made of plain concrete or foamed lightweight concrete.

6. The important pipeline protection structure invading the road structure layer according to claim 1 is characterized by: The buffer filler (4) is a polyethylene closed-cell foam board.

7. The important pipeline protection structure invading the road structure layer according to any one of claims 1 to 6, characterized in that: It also comprises connecting steel bars (6), which are arranged in the crown beam (2) and in the top plate (3) above the crown beam (2) and connect the crown beam (2) and the top plate (3).

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