A door-type reinforcing structure for protecting a subway in operation
Patent Information
- Application Number
- CN202522249943.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-10-24
AI Technical Summary
[0005]The beneficial effects of this utility model are as follows: The portal reinforcement structure of this utility model for protecting operating subways allows for flexible adjustment of the direction and angle of the inclined reinforcement body according to the specific location of existing pipelines, making it highly adaptable in areas with limited site conditions. The vertical reinforcement body can be used in areas unaffected by existing pipelines. Through a reasonable combination of inclined and vertical reinforcement bodies, a portal reinforcement structure is formed above the subway, reinforcing the soil above the subway without disturbing existing pipelines. The reinforcement structure is flexible in its layout, has good overall stability and safety, has been successfully implemented, and can be promoted for use.
Smart Images
Figure CN224858897U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reinforcement and protection technology for subway sections under existing roads, and in particular to a portal reinforcement structure for protecting subways in operation. Background Technology
[0002] As urbanization enters its later stages, surface space resources are becoming increasingly scarce, leading to a shift in development focus underground. Demand for underground facilities such as pedestrian underpasses, underground utility tunnels, subway connecting lines, and underground parking garage connections is surging. In highly developed cities, subways are the lifeline of urban transportation, with core requirements of absolute safety, high precision and stability, and uninterrupted operation. Any adjacent construction must ensure that the deformation (settlement, heave, horizontal displacement) of the subway tunnel structure is controlled within a strict millimeter range. With the deepening of underground space development, the conflict between it and operational subways is becoming increasingly prominent. To cope with the extreme limitations of construction space and methods, reduce disturbance to the surrounding soil during underground engineering construction, and strictly control the settlement and deformation of subway tunnels, soil reinforcement technology must be adopted. Innovative construction methods must be used, such as grouting the soil between the tunnel and the underground space, to improve soil strength and modulus, forming a "reinforced zone" to share the transmitted load. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a portal reinforcement structure for protecting a subway in operation, addressing the shortcomings of the prior art.
[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A portal reinforcement structure for protecting a subway in operation is applied between a subway operating section, a left-side pipeline group located above the subway operating section, and a right-side pipeline group located above the subway operating section. It includes an inclined reinforcement body and a vertical reinforcement body. The inclined reinforcement body is obliquely arranged on both sides and above the subway operating section. The vertical reinforcement body is arranged between the inclined reinforcement body on the left side of the subway operating section and the inclined reinforcement body located above the subway operating section and passes through the left-side pipeline group. It is also arranged between the inclined reinforcement body on the right side of the subway operating section and the inclined reinforcement body located above the subway operating section and passes through the right-side pipeline group. The lower ends of the inclined reinforcement bodies located on both sides of the subway operating section extend obliquely to both sides of the subway operating section, and a portal reinforcement structure is formed between the inclined reinforcement bodies and the vertical reinforcement bodies.
[0005] The beneficial effects of this utility model are as follows: The portal reinforcement structure of this utility model for protecting operating subways allows for flexible adjustment of the direction and angle of the inclined reinforcement body according to the specific location of existing pipelines, making it highly adaptable in areas with limited site conditions. The vertical reinforcement body can be used in areas unaffected by existing pipelines. Through a reasonable combination of inclined and vertical reinforcement bodies, a portal reinforcement structure is formed above the subway, reinforcing the soil above the subway without disturbing existing pipelines. The reinforcement structure is flexible in its layout, has good overall stability and safety, has been successfully implemented, and can be promoted for use.
[0006] Based on the above technical solution, the present invention can be further improved as follows:
[0007] Further: The inclined reinforcement body includes a first left inclined reinforcement body, a first right inclined reinforcement body, a second left inclined reinforcement body, and a second right inclined reinforcement body. The first left inclined reinforcement body is inclinedly disposed on the left side of the subway operating section, and the first right inclined reinforcement body is inclinedly disposed above the subway operating section. The lower ends of the first left and first right inclined reinforcement bodies are respectively connected and fixed to the lower ends of the vertical reinforcement body located between them. The second left inclined reinforcement body is disposed above the subway operating section, and the second right inclined reinforcement body is inclinedly disposed on the upper right side of the subway operating section. The lower ends of the second left and second right inclined reinforcement bodies are respectively connected and fixed to the lower ends of the vertical reinforcement body located between them. The first right and second left inclined reinforcement bodies are inclinedly staggered above the subway operating section, and the lower ends of the first left and second right inclined reinforcement bodies extend obliquely downward to both sides of the subway operating section.
[0008] The beneficial effects of the above-mentioned further scheme are as follows: by setting up the first left-angled reinforcement body, the first right-angled reinforcement body, the second left-angled reinforcement body, and the second right-angled reinforcement body under the existing pipeline group, the existing pipeline group is efficiently avoided, the soil above the subway is reinforced, and at the same time, the vertical reinforcement body is used to reinforce the blind area, ensuring the continuity of the soil reinforcement above the subway, forming a closed portal reinforcement structure, and protecting the subway operating section.
[0009] Furthermore, there are multiple first left oblique reinforcements, first right oblique reinforcements, second left oblique reinforcements, and second right oblique reinforcements, and these multiple first left oblique reinforcements, first right oblique reinforcements, second left oblique reinforcements, and second right oblique reinforcements are arranged side by side at an oblique angle, with the first left oblique reinforcements and the first right oblique reinforcements, the first right oblique reinforcements and the second left oblique reinforcements, and the second left oblique reinforcements and the second right oblique reinforcements interlocking with each other.
[0010] The beneficial effects of the above-mentioned further scheme are as follows: by setting up the first left-angled reinforcement, the first right-angled reinforcement, the second left-angled reinforcement, and the second right-angled reinforcement to pass under the existing pipeline group, the existing pipeline group is efficiently avoided, and the soil above the subway is reinforced. At the same time, the left-side reinforcement, the middle reinforcement, and the right-side reinforcement are used to reinforce blind spots, ensuring the continuity of the soil reinforcement above the subway, forming a closed portal reinforcement structure, and protecting the subway operating section.
[0011] Further: the first left-sloping solid and the first right-sloping solid are tilted to the left by 45° and to the right by 45° respectively, and the second left-sloping solid and the second right-sloping solid are tilted to the left by 45° and to the right by 45° respectively.
[0012] Further: The vertical reinforcement body includes a left reinforcement body, a middle reinforcement body, and a right reinforcement body. The left reinforcement body is vertically disposed between the first left inclined reinforcement body and the first right inclined reinforcement body. The left reinforcement body extends downward through the left pipeline group and is connected and fixed to the first left inclined reinforcement body and the first right inclined reinforcement body respectively. The right reinforcement body is vertically disposed between the second left inclined reinforcement body and the second right inclined reinforcement body. The right reinforcement body extends downward through the right pipeline group and is connected and fixed to the second left inclined reinforcement body and the second right inclined reinforcement body respectively. The middle reinforcement body is vertically disposed in the overlapping and intersecting area of the first right inclined reinforcement body and the second left inclined reinforcement body. The lower ends of the first left inclined reinforcement body, the first right inclined reinforcement body, the second left inclined reinforcement body, the second right inclined reinforcement body, the left reinforcement body, the middle reinforcement body, and the right reinforcement body are connected to form a whole and form a portal reinforcement structure.
[0013] The beneficial effects of the above-mentioned further scheme are: by setting up a left-side reinforcement body, a middle reinforcement body, and a right-side reinforcement body, and cooperating with a first left-sloping reinforcement body, a first right-sloping reinforcement body, a second left-sloping reinforcement body, and a second right-sloping reinforcement body, the continuity of the soil reinforcement above the subway is ensured, forming a closed portal reinforcement structure to protect the subway operating section.
[0014] Furthermore, the vertical reinforcement body also includes a section reinforcement body, which is disposed between the tunnel within the subway operating section. The section reinforcement body is located below the intermediate reinforcement body, and the section reinforcement body is fixedly connected to the intermediate reinforcement body.
[0015] The beneficial effect of the above-mentioned further solution is that by setting up the inter-section reinforcement, it can play an isolation role, prevent the two sections from affecting each other, and enhance the protection of the subway operating section.
[0016] Furthermore, the inclined reinforcement body is constructed using the MJS method of all-round high-pressure jet grouting, while the vertical reinforcement body is constructed using cement-soil mixing piles or conventional high-pressure jet grouting piles.
[0017] The beneficial effects of the above-mentioned further scheme are: the all-round high-pressure jet grouting MJS method can flexibly control the reinforcement direction and grouting pressure. When crossing existing pipeline groups at an angle, it can effectively reinforce the soil below them by grouting without disturbing the existing pipeline groups. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a portal reinforcement structure for protecting an operating subway, according to an embodiment of the present invention.
[0019] The attached diagram lists the components represented by each number as follows:
[0020] 001. Subway operating section; 002. Left side pipeline group; 003. Right side pipeline group;
[0021] 1. Add solid material to the first left oblique angle; 2. Add solid material to the first right oblique angle; 3. Add solid material to the second left oblique angle; 4. Add solid material to the second right oblique angle; 5. Add solid material to the side; 6. Add solid material to the middle; 7. Add solid material to the right side; 8. Add solid material between the sides. Detailed Implementation
[0022] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0023] like Figure 1 As shown, a portal reinforcement structure for protecting an operating subway is applied between a subway operating section 001, a left-side pipeline group 002 located above the subway operating section 001, and a right-side pipeline group 003 located above the subway operating section 001. It includes inclined reinforcement bodies and vertical reinforcement bodies. The inclined reinforcement bodies are obliquely positioned on both sides and above the subway operating section 001. The vertical reinforcement bodies are positioned between the inclined reinforcement bodies on the left side of the subway operating section 001 and the inclined reinforcement bodies above the subway operating section 001, and penetrate the left-side pipeline group 002. Similarly, the inclined reinforcement bodies on the right side of the subway operating section 001 and the inclined reinforcement bodies above the subway operating section 001 are positioned between the right-side pipeline group 003 and the area where the inclined reinforcement bodies above the subway operating section 001 are located. The lower ends of the inclined reinforcement bodies on both sides of the subway operating section 001 extend obliquely to both sides of the subway operating section 001, and a portal reinforcement structure is formed between the inclined reinforcement bodies and the vertical reinforcement bodies.
[0024] This utility model relates to a portal reinforcement structure for protecting operating subways. The direction and angle of the inclined reinforcement body can be flexibly adjusted according to the specific location of existing pipelines, making it highly adaptable in areas with limited site conditions. The vertical reinforcement body can be used in areas unaffected by existing pipelines. Through a reasonable combination of inclined and vertical reinforcement bodies, a portal reinforcement structure is formed above the subway, exhibiting good overall rigidity and stability. It reinforces the soil above the subway without disturbing existing pipelines. The reinforcement structure is flexible in its layout and has good overall stability and safety. It has been successfully implemented and can be widely used.
[0025] In one or more embodiments of this utility model, the inclined reinforcement body includes a first left inclined reinforcement body 1, a first right inclined reinforcement body 2, a second left inclined reinforcement body 3, and a second right inclined reinforcement body 4. The first left inclined reinforcement body 1 is obliquely disposed on the left side of the subway operating section 001, and the first right inclined reinforcement body 2 is obliquely disposed above the subway operating section 001. The lower ends of the first left inclined reinforcement body 1 and the first right inclined reinforcement body 2 are respectively connected and fixed to the lower end of the vertical reinforcement body located between them. The second left inclined reinforcement body 3 is disposed above the subway operating section 001, and the second right inclined reinforcement body 4 is obliquely disposed above the right side of the subway operating section 001. The lower ends of the second left inclined reinforcement body 3 and the second right inclined reinforcement body 4 are respectively connected and fixed to the lower end of the vertical reinforcement body located between them. The first right inclined reinforcement body 2 and the second left inclined reinforcement body 3 are obliquely staggered above the subway operating section 001, and the lower ends of the first left inclined reinforcement body 1 and the second right inclined reinforcement body 4 extend obliquely downward to both sides of the subway operating section 001. By setting up the first left-angled reinforcement body 1, the first right-angled reinforcement body 2, the second left-angled reinforcement body 3, and the second right-angled reinforcement body 4 diagonally under the existing pipeline group, the existing pipeline group is efficiently avoided, and the soil above the subway is reinforced. At the same time, the vertical reinforcement body is used to reinforce blind spots, ensuring the continuity of the soil reinforcement above the subway and forming a closed portal reinforcement structure to protect the subway operating section.
[0026] In one or more embodiments of this utility model, the number of the first left-angled reinforcement 1, the first right-angled reinforcement 2, the second left-angled reinforcement 3, and the second right-angled reinforcement 4 are all multiple, and these multiple reinforcements are arranged side-by-side at an angle. The first left-angled reinforcement 1 and the first right-angled reinforcement 2, the first right-angled reinforcement 2 and the second left-angled reinforcement 3, and the second left-angled reinforcement 3 and the second right-angled reinforcement 4 are interlocked. By setting the first left-angled reinforcement 1, the first right-angled reinforcement 2, the second left-angled reinforcement 3, and the second right-angled reinforcement 4 to pass under existing pipeline groups, the existing pipeline groups are efficiently avoided, and the soil above the subway is reinforced. Simultaneously, the reinforcements on the left, middle, and right sides are used to reinforce blind spots, ensuring the continuity of soil reinforcement above the subway and forming a closed portal reinforcement structure to protect the subway operating section.
[0027] Optionally, in one or more embodiments of the present invention, the first left-sloping reinforcement 1 and the first right-sloping reinforcement 2 are tilted 45° to the left and 45° to the right, respectively, and the second left-sloping reinforcement 3 and the second right-sloping reinforcement 4 are tilted 45° to the left and 45° to the right, respectively.
[0028] In one or more embodiments of this utility model, the vertical reinforcement body includes a left reinforcement body 5, a middle reinforcement body 6, and a right reinforcement body 7. The left reinforcement body 5 is vertically disposed between the first left inclined reinforcement body 1 and the first right inclined reinforcement body 2. The left reinforcement body 5 penetrates downward through the left pipeline group 002 and is connected and fixed to the first left inclined reinforcement body 1 and the first right inclined reinforcement body 2 respectively. The right reinforcement body 7 is vertically disposed between the second left inclined reinforcement body 3 and the second right inclined reinforcement body 4. The right reinforcement body 7 penetrates downward through the right pipeline group 003 and is connected and fixed to the second left inclined reinforcement body 3 and the second right inclined reinforcement body 4 respectively. The middle reinforcement body 6 is vertically disposed in the overlapping and intersecting area of the first right inclined reinforcement body 2 and the second left inclined reinforcement body 3. The lower ends of the first left inclined reinforcement body 1, the first right inclined reinforcement body 2, the second left inclined reinforcement body 3, the second right inclined reinforcement body 4, the left reinforcement body 5, the middle reinforcement body 6, and the right reinforcement body 7 are connected to form a whole and form a portal reinforcement structure. By setting up a left-side reinforcement 5, a middle reinforcement 6, and a right-side reinforcement 7, and cooperating with a first left-sloping reinforcement 1, a first right-sloping reinforcement 2, a second left-sloping reinforcement 3, and a second right-sloping reinforcement 4, the continuity of soil reinforcement above the subway is ensured, forming a closed portal reinforcement structure to protect the subway operating section.
[0029] The soil between the right pipeline group 003 and the left pipeline group 002 is unobstructed. The middle area is vertically reinforced by triaxial mixing piles to form a middle reinforced body 6. Together with the first left inclined reinforced body 1, the first right inclined reinforced body 2, the second left inclined reinforced body 3, and the second right inclined reinforced body 4, it forms a portal reinforced structure to ensure the integrity of the portal reinforced body.
[0030] In one or more embodiments of this utility model, the vertical reinforcement body further includes a section reinforcement body 8, which is disposed between the tunnel and the subway operating section 001. The section reinforcement body 8 is located below the intermediate reinforcement body 6, and the section reinforcement body 8 is connected and fixed to the intermediate reinforcement body 6. By setting the section reinforcement body 8, an isolation function can be achieved to prevent the two sections from affecting each other, thereby enhancing the protection of the subway operating section 001.
[0031] In one or more embodiments of this utility model, the inclined reinforcement body is constructed using the all-around high-pressure jet grouting MJS method, while the vertical reinforcement body is constructed using cement-soil mixing piles or conventional high-pressure jet grouting piles. The all-around high-pressure jet grouting MJS method allows for flexible control of the reinforcement direction and grouting pressure, ensuring the feasibility of the reinforcement. When obliquely crossing existing pipeline groups, it can effectively reinforce the soil below by grouting without disturbing the existing pipeline groups.
[0032] In this embodiment of the invention, during the construction of the MJS method for all-round high-pressure jet grouting, the pile diameter is 2m, the water-cement ratio is 1:1, the cement grout pressure is 40MPa, the cement grout flow rate is 90L / min, the cement content is 40%, the drilling water pressure is controlled between 10-30MPa, the pile angle error is controlled within 1 / 100, and the lifting speed is controlled between 20-40min / m. Specific construction parameters can be adjusted appropriately according to the site conditions. A suitable safety distance is maintained between the MJS grouting pipe and the edge of the subway operating section 001. To reduce disturbance to the subway operating section, it is generally recommended that the distance be no less than 2m. The distance between the portal reinforcement structure and the subway, the thickness of the reinforcement body, and the depth of the "portal" can be adjusted according to the soil conditions. In this embodiment, the distance is 2m, the thickness is 7.1m, and the depth of the portal is 10.4m. After 28 days, the unconfined compressive strength of the solidified body should be no less than 1.0 MPa, and the permeability coefficient should be less than 1.0 × 10 cm⁻⁷ / s. At the same time, horizontal probe holes should be drilled to test the integrity, uniformity, and water-stopping effect of the solidified body. If the design requirements are not met, remedial measures should be taken in time.
[0033] The cement-soil mixing piles are 850mm x 600mm in size. In weakly reinforced areas, the cement content per cubic meter of soil should be no less than 7%, and in strongly reinforced areas, no less than 20%. Ordinary Portland cement of grade 42.5 or higher is used. Before construction, test piles must be conducted, and comparative tests of the cement content, strength, and other construction parameters must be performed based on the soil type to determine the construction process and parameters, ensuring the reinforcement effect. The depth and width of the mixing piles can be determined according to the soil conditions between subway sections.
[0034] The reinforcement structure of this utility model combines multiple processes to form a spatial integral portal structure, which significantly improves the stiffness and stability of the soil above subway section 001 and reduces the impact of external construction on subway section 001.
[0035] This utility model's reinforcement structure, combined with mixing pile reinforcement, is used in the central area of an operating subway tunnel section, offering good economic efficiency and high construction efficiency. This utility model's reinforcement structure has strong applicability, especially suitable for protection projects of operating subways in urban areas with dense pipelines and high environmental protection requirements. The overall layout of this utility model's reinforcement structure is flexible, and the structure is safe and reliable, effectively ensuring safety during underground engineering construction in operating subway tunnel sections.
[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A portal reinforcement structure for protecting an operating subway, applied between a subway operating section (001), a left-side pipeline group (002) located above the subway operating section (001), and a right-side pipeline group (003) located above the subway operating section (001), characterized in that: It includes inclined reinforcement bodies and vertical reinforcement bodies. The inclined reinforcement bodies are obliquely arranged on both sides and above the subway operating section (001). The vertical reinforcement bodies are arranged between the inclined reinforcement body on the left side of the subway operating section (001) and the inclined reinforcement body above the subway operating section (001) and pass through the left pipeline group (002). The inclined reinforcement body on the right side of the subway operating section (001) and the inclined reinforcement body above the subway operating section (001) and pass through the right pipeline group (003). The inclined reinforcement body above the subway operating section (001) is located in the area where the inclined reinforcement body is located. The lower ends of the inclined reinforcement bodies on both sides of the subway operating section (001) extend obliquely to both sides of the subway operating section (001). The inclined reinforcement bodies and the vertical reinforcement bodies form a portal reinforcement structure.
2. The portal reinforcement structure for protecting an operating subway as described in claim 1, characterized in that: The inclined reinforcement body includes a first left inclined reinforcement body (1), a first right inclined reinforcement body (2), a second left inclined reinforcement body (3), and a second right inclined reinforcement body (4). The first left inclined reinforcement body (1) is obliquely arranged on the left side of the subway operating section (001), and the first right inclined reinforcement body (2) is obliquely arranged above the subway operating section (001). The lower ends of the first left inclined reinforcement body (1) and the first right inclined reinforcement body (2) are respectively connected and fixed to the lower end of the vertical reinforcement body located between them. The second left inclined reinforcement body (3) is arranged on the subway operating section. Above the section (001), the second right inclined reinforcement (4) is obliquely arranged above the right side of the subway operating section (001), and the lower ends of the second left inclined reinforcement (3) and the second right inclined reinforcement (4) are respectively connected and fixed to the lower ends of the vertical reinforcement located between them. The first right inclined reinforcement (2) and the second left inclined reinforcement (3) are obliquely staggered above the subway operating section (001), and the lower ends of the first left inclined reinforcement (1) and the second right inclined reinforcement (4) extend obliquely downward to both sides of the subway operating section (001).
3. The portal reinforcement structure for protecting an operating subway as described in claim 2, characterized in that: The number of the first left oblique reinforcement (1), the first right oblique reinforcement (2), the second left oblique reinforcement (3), and the second right oblique reinforcement (4) are all multiple, and the multiple first left oblique reinforcement (1), the first right oblique reinforcement (2), the second left oblique reinforcement (3), and the second right oblique reinforcement (4) are arranged side by side at an oblique angle. The first left oblique reinforcement (1) and the first right oblique reinforcement (2), the first right oblique reinforcement (2) and the second left oblique reinforcement (3), and the second left oblique reinforcement (3) and the second right oblique reinforcement (4) are respectively interlocked with each other.
4. The portal reinforcement structure for protecting an operating subway as described in claim 3, characterized in that: The first left-sloping solid (1) and the first right-sloping solid (2) are tilted to the left by 45° and to the right by 45° respectively, and the second left-sloping solid (3) and the second right-sloping solid (4) are tilted to the left by 45° and to the right by 45° respectively.
5. The portal reinforcement structure for protecting an operating subway as described in claim 2, characterized in that: The vertical reinforcement includes a left reinforcement (5), a middle reinforcement (6), and a right reinforcement (7). The left reinforcement (5) is vertically positioned between the first left inclined reinforcement (1) and the first right inclined reinforcement (2). The left reinforcement (5) extends downward through the left pipeline group (002) and is connected and fixed to the first left inclined reinforcement (1) and the first right inclined reinforcement (2) respectively. The right reinforcement (7) is vertically positioned between the second left inclined reinforcement (3) and the second right inclined reinforcement (4). 7) The right-side pipeline group (003) is passed downward and connected and fixed to the second left-side inclined reinforcement (3) and the second right-side inclined reinforcement (4) respectively. The middle reinforcement (6) is vertically arranged in the overlapping and intersecting area of the first right-side inclined reinforcement (2) and the second left-side inclined reinforcement (3). The lower ends of the first left-side inclined reinforcement (1), the first right-side inclined reinforcement (2), the second left-side inclined reinforcement (3), the second right-side inclined reinforcement (4), the left-side reinforcement (5), the middle reinforcement (6) and the right-side reinforcement (7) are connected to form a whole and form a portal reinforcement structure.
6. The portal reinforcement structure for protecting an operating subway as described in claim 5, characterized in that: The vertical reinforcement body also includes a section reinforcement body (8), which is disposed between the tunnel in the subway operating section (001). The section reinforcement body (8) is located below the intermediate reinforcement body (6), and the section reinforcement body (8) is connected and fixed to the intermediate reinforcement body (6).
7. The portal reinforcement structure for protecting an operating subway as described in any one of claims 1-6, characterized in that: The inclined reinforcement body is constructed using the MJS method of all-round high-pressure jet grouting, while the vertical reinforcement body is constructed using cement-soil mixing piles or conventional high-pressure jet grouting piles.