Roadway cable pipe gallery deviation working well

Abstract

The utility model discloses a driveway cable pipe gallery deviation working well, which belongs to the technical field of working wells and comprises a well body, an integral reinforced concrete top plate is arranged at the top of the well body, a nodular cast iron sinking type well cover is arranged at a well mouth of the well body, and a green belt or a sidewalk pavement layer covers the nodular cast iron sinking type well cover. A metal cable support is arranged in the well body, power cables and communication cables are arranged on the two sides of the interior of the well body at equal intervals respectively, the power cables and the communication cables are installed on the metal cable support, the side wall of the well body extends outwards to be provided with a lower manhole, and an opening of the lower manhole is located in a lane side zoning greening area or a sidewalk area. A lower manhole channel is arranged in the direction from the lower manhole to the interior of the well body, and a lower crawling ladder is arranged on the inner wall of the well body. The cable pipe gallery deviation working well solves the problems that the well lid occupies a road, the top plate cracks and water seepage occurs through structural optimization.

Description

Technical Field

[0001] This utility model relates to the field of manhole technology, and in particular to a manhole for offset cable tunnels in roadways. Background Technology

[0002] With the advancement of technology and the acceleration of urbanization, due to factors such as urban land scarcity, heavy traffic, and urban beautification, large cities generally adopt underground pipeline cable power transmission.

[0003] Existing cable duct manholes in vehicular lanes typically feature a centrally located opening in the roof slab, with the manhole cover directly installed on the vehicular or non-motorized vehicle lane. This structure has the following drawbacks:

[0004] 1. Traffic safety hazards: The manhole cover is located in the driving lane. Frequent driving can easily cause the manhole cover to loosen. Moreover, maintenance requires blocking the road, which affects traffic and increases the risk of operation.

[0005] 2. Insufficient structural strength: The openings in the top plate weaken the overall strength, and the area around the openings is prone to cracking under vehicle loads.

[0006] 3. Water seepage problem: Water is prone to seepage at the joint between the manhole cover and the top plate. After long-term use, water will accumulate inside the manhole, affecting the safety of pipelines. Utility Model Content

[0007] In order to overcome the shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a manhole for the cable corridor of the roadway that solves the problems of manhole cover obstruction, top plate cracking and water seepage through structural optimization.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] The utility model provides a manhole for offset cable ducts in a driveway, comprising a manhole body, an integral reinforced concrete roof slab at the top of the manhole body, a ductile iron sunken manhole cover at the manhole opening, a green belt or sidewalk paving layer on the ductile iron sunken manhole cover, power cables and communication cables equally spaced on both sides of the interior of the manhole body, the power cables and communication cables being mounted on metal cable brackets, a manhole extending outward from the side wall of the manhole body, the opening of the manhole being located in the green area of ​​the driveway median or sidewalk area, a manhole passage extending into the interior of the manhole body, and a ladder for descending onto the inner wall of the manhole body.

[0010] The preferred technical solution of this utility model is that the well body is divided into a feed straight well, a maintenance straight well, and a feed three-way well.

[0011] The preferred technical solution of this utility model is that the top plate is an integrally cast reinforced concrete structure with no openings, and the top plate is anchored to the side wall of the well body by steel bars.

[0012] A preferred embodiment of this utility model is that a water collection well is provided at the bottom of the well body, and a steel grating cover is provided on the water collection well.

[0013] The preferred technical solution of this utility model is that the size of the water collection well is 1m x 1m x 1m, and a water pump is provided on one side of the water collection well.

[0014] The preferred technical solution of this utility model is that a grounding strip is laid on the inner wall of the well body at a distance of 0.4 from the bottom of the well. The grounding strip is composed of 50X5 copper-plated flat steel and is welded to the ladder for people to climb down.

[0015] The preferred technical solution of this utility model is that two sets of grounding resistance test points and reserved artificial grounding points are respectively set on both sides of the well wall of the well body.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model features an integral reinforced concrete top slab anchored to the well wall by pre-embedded steel bars, eliminating the need for pre-drilled holes and ensuring structural airtightness. This eliminates stress concentration and water seepage risks associated with traditional pre-drilled holes, ensuring pipeline safety, improving overall compressive strength, and extending the well's service life. The ductile iron recessed manhole cover is flush with the surface of the green belt or sidewalk paving layer, preventing damage from vehicle traffic and enhancing the aesthetics of the environment.

[0018] This utility model can be applied on a large scale to urban road cable tunnel projects, especially suitable for the intersection of roadway and sidewalk. It is compatible with various pipelines such as power and communication, and features stable structure, convenient operation and maintenance, and environmental friendliness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the feed straight-through well structure provided in a specific embodiment of this utility model;

[0020] Figure 2 This is provided in a specific embodiment of the present utility model. Figure 1 Sectional view of the AA structure;

[0021] Figure 3 This is provided in a specific embodiment of the present utility model. Figure 1 Sectional view of the BB structure;

[0022] Figure 4 This is a schematic diagram of the maintenance through-hole structure provided in a specific embodiment of this utility model;

[0023] Figure 5 This is provided in a specific embodiment of the present utility model. Figure 4 Sectional view of the AA structure;

[0024] Figure 6 This is provided in a specific embodiment of the present utility model. Figure 4 Sectional view of the BB structure;

[0025] Figure 7 This is a schematic diagram of the feed tee well structure provided in a specific embodiment of this utility model;

[0026] Figure 8 This is provided in a specific embodiment of the present utility model. Figure 7 Sectional view of the AA structure;

[0027] Figure 9 This is provided in a specific embodiment of the present utility model. Figure 7 Cross-sectional view of the BB structure.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Well body; 11. Power cable; 12. Communication cable; 2. Ductile iron sunken manhole cover; 3. Water collection well; 31. Steel grating cover plate; 4. Manhole; 5. Ladder for lowering people; 6. Grounding strip; 7. Grounding resistance test point; 8. Reserved artificial grounding electrode point. Detailed Implementation

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] The off-center manhole for the cable duct corridor includes a manhole body 1. The top of the manhole body 1 is equipped with an integral reinforced concrete roof slab without any openings. The roof slab is anchored to the side wall of the manhole body 1 by steel reinforcement. A ductile iron recessed manhole cover 2 is installed at the opening of the manhole body 1. The ductile iron recessed manhole cover 2 is covered with a green belt or sidewalk paving layer. Power cables 11 and communication cables 12 are installed at equal intervals on both sides of the interior of the manhole body 1. The power cables 11 and communication cables 12 are installed on metal cable brackets. A manhole 4 extends outward from the side wall of the manhole body 1. The opening of the manhole 4 is located in the green area of ​​the median strip or sidewalk area on the side of the roadway. A manhole passage is provided inward from the manhole 4 towards the interior of the manhole body 1. A ladder 5 is provided on the inner wall of the manhole body 1. Two sets of grounding resistance test points 7 and reserved artificial grounding points 8 are respectively provided on both sides of the manhole wall of the manhole body 1.

[0032] The top of the manhole body 1 is constructed with an integral reinforced concrete top slab, which is anchored to the manhole wall by pre-embedded steel bars. The absence of pre-drilled holes ensures structural airtightness, eliminates stress concentration and water seepage risks associated with traditional pre-drilled holes, guarantees pipeline safety, improves overall compressive strength, and extends the service life of the manhole body 1. A ductile iron recessed manhole cover 2 is installed at the manhole opening. The surface of the ductile iron recessed manhole cover 2 is flush with the green belt or sidewalk paving layer, preventing damage from vehicle traffic and enhancing the aesthetics. The bottom of the ductile iron recessed manhole cover 2 is filled with concrete grout to distribute load pressure. A manhole 4 extends outward from the side wall of the manhole body 1, avoiding obstruction of driving space and traffic flow. A vertical passageway is provided via a ladder 5.

[0033] As one possible implementation of this solution, preferably, the well body 1 is divided into a material inlet straight well, a maintenance straight well, and a material inlet tee well, which can adapt to straight laying, branch connection, and multiple maintenance needs, thereby improving the topological flexibility of the utility tunnel system.

[0034] As a possible implementation of this solution, preferably, a water collection well 3 is provided at the bottom of the well body 1, and a steel grating cover plate 31 is provided on the water collection well 3. The water collection well 3 has a size of 1m x 1m x 1m. A water pump and a sensor are provided on one side of the water collection well 3. The water collection well 3, together with the steel grating cover plate 31, can achieve efficient drainage. The size of 1m x 1m x 1m ensures the water storage capacity. Through the cooperation of the sensor and the water pump, when the water level reaches the designated position, the water pump will pump water to reduce the maintenance frequency.

[0035] As a possible implementation of this solution, preferably, a grounding strip 6 is laid on the inner wall of the well body 1 at a distance of 0.4 from the bottom of the well. The grounding strip 6 is composed of 50X5 copper-plated flat steel. The grounding strip 6 is welded to the ladder 5 for descending personnel. The grounding strip 6 is laid at a low position and welded to the ladder 5 for descending personnel to form an equipotential connection and reduce the risk of step voltage.

[0036] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.

Claims

1. A misaligned manhole for a cable tunnel in a roadway, characterized in that: The well includes a well body (1), the top of which is provided with an integral reinforced concrete top slab. A ductile iron sunken manhole cover (2) is provided at the well opening of the well body (1). The ductile iron sunken manhole cover (2) is covered with a green belt or a sidewalk paving layer. Power cables (11) and communication cables (12) are provided at equal intervals on both sides of the inside of the well body (1). The power cables (11) and communication cables (12) are installed on a metal cable bracket. A manhole (4) is provided extending outward from the side wall of the well body (1). The opening of the manhole (4) is located in the green area of ​​the median strip or the sidewalk area on the side of the roadway. A manhole passage is provided in the direction of the manhole (4) toward the inside of the well body (1). A ladder (5) is provided on the inner wall of the well body (1).

2. The offset manhole for the cable tunnel of the vehicle lane according to claim 1, characterized in that: The well body (1) is divided into a feed straight well, a maintenance straight well and a feed tee well.

3. The offset manhole for the cable tunnel of the carriageway according to claim 1, characterized in that: The top plate is an integrally cast reinforced concrete structure with no openings. The top plate is anchored to the side wall of the well body (1) by steel bars.

4. The offset manhole for the cable tunnel of the vehicle lane according to claim 1, characterized in that: The bottom of the well body (1) is provided with a water collection well (3), and a steel grid cover plate (31) is provided on the water collection well (3).

5. The offset manhole for the cable tunnel of the vehicle lane according to claim 4, characterized in that: The water collection well (3) has a size of 1m x 1m x 1m, and a water pump is installed on one side of the water collection well (3).

6. The offset manhole for the cable tunnel of the vehicle lane according to claim 1, characterized in that: The well body (1) has a grounding strip (6) laid on the inner wall at a distance of 0.4 from the bottom of the well. The grounding strip (6) is composed of 50X5 copper-plated flat steel and is welded to the ladder (5) for descending.

7. The offset manhole for the cable tunnel of the vehicle lane according to claim 1, characterized in that: Two sets of grounding resistance test points (7) and reserved artificial grounding points (8) are respectively set on both sides of the well wall of the well body (1).

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