A lifting reinforcement tool for protecting a structure layer around a manhole and a construction method

Abstract

The present application relates to the technical field of inspection well construction, and particularly relates to a lifting and reinforcing tool for protecting the structure layer around an inspection well and a construction method, wherein two circular steel rings A and two circular steel rings B with the same structure and different diameters are applied in the paving process of a road subbase, a road base and a road asphalt layer, the circular steel rings A or the circular steel rings B are connected together through connecting ears, an anchor steel nail is punched into a reserved hole of a bottommost connecting ear, and finally a hole is formed around the well shaft of the inspection well, and the hole is poured with concrete, so that the quality of the road structure layer around the inspection well is ensured, the structure layer around the inspection well is not disturbed during the construction around the inspection well, and a back excavation process is not needed, so that the integrity of the road structure layer around the inspection well is maximally ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inspection well construction, in particular to a lifting and reinforcing tool for protecting the structure layer around an inspection well and a construction method. BACKGROUND

[0002] During the construction of a road structure layer, the inspection well is generally lifted to the roadbed for the convenience of the travel of the paver, and after the construction of the structure layer, the oil hammer is used to break the road structure layer to lift and reinforce the inspection well. However, during the construction of the oil hammer, the adjacent road structure layer is easily disturbed, and internal cracks are generated in the road structure layer around the inspection well, and after a period of road operation, the damage around the well will occur. SUMMARY

[0003] The present application provides a lifting and reinforcing tool for protecting the structure layer around an inspection well and a construction method to solve the problems in the prior art.

[0004] The present application is implemented by the following technical solutions:

[0005] The lifting and reinforcing tool for protecting the structure layer around an inspection well comprises a plurality of circular steel rings A, the inner wall of each circular steel ring A is uniformly welded with a plurality of stiffening ribs, the upper end and the lower end of each stiffening rib are welded with a connecting lug, the connecting lug is flush with the upper surface or the lower surface of the circular steel ring A, and a reserved hole is arranged on the connecting lug; the tool further comprises a plurality of circular steel rings B, the circular steel ring B has the same structure as the circular steel ring A, the diameter of the circular steel ring B is greater than the diameter of the circular steel ring A, and the diameter of the circular steel ring A is greater than the diameter of the well shaft of the inspection well; the connecting lugs of the adjacent circular steel rings A or the adjacent circular steel rings B are fixed together by the bolts and nuts passing through the reserved holes; the anchor steel nail A is driven into the reserved hole of the connecting lug on the bottom circular steel ring A, and the anchor steel nail A is anchored to the roadbed around the inspection well; the anchor steel nail B is driven into the reserved hole of the connecting lug on the bottom circular steel ring B, and the anchor steel nail B is anchored to the water stable layer around the inspection well; the heights of the plurality of circular steel rings A are respectively consistent with the design thicknesses of the road subbase and the road base; and the heights of the plurality of circular steel rings B are respectively consistent with the design thicknesses of the road asphalt layers.

[0006] Preferably, the diameter of the circular steel ring A is 80 cm greater than the diameter of the well shaft of the inspection well, and the diameter of the circular steel ring B is 60 cm greater than the diameter of the circular steel ring A.

[0007] The present application further comprises a construction method for protecting the structure layer around an inspection well, which comprises the following steps:

[0008] Step one: place a circular steel ring A at the position of the inspection well, the center of the circular steel ring A is on the same vertical line as the center of the well shaft of the inspection well; drive the anchor steel nail into the reserved hole of the connecting lug on the lower end of the circular steel ring A to anchor the circular steel ring A to the roadbed, and use a steel plate to temporarily cover the well mouth of the inspection well.

[0009] Step two: Fill sand in the circular steel ring A, and compact it with small tools such as impact rammer, so that the sand in the circular steel ring A is compacted to more than 90%.

[0010] Step three: The road sub-base is paved by the paver, and the height of the circular steel ring A is equal to the thickness of the road sub-base to be paved. After the paver passes the position of the circular steel ring A, the paving material above the circular steel ring A is cleaned manually to expose the circular steel ring A and the filled sand.

[0011] Step four: Roll the paving material of step three.

[0012] Step five: Place another section of the circular steel ring A above the fixed circular steel ring A, and fix the two sections of the circular steel ring A into a whole through the bolts and nuts.

[0013] Step six: Repeat steps two to five above to pave each layer of the road base in turn until the construction of all the road base is completed.

[0014] Step seven: After the curing period of the uppermost layer of the water stable layer of the road base ends and is accepted, place a section of the circular steel ring B outside the circular steel ring A, and drive anchor steel nails B into the reserved holes of the connecting ears at the lower end of the circular steel ring B to anchor the circular steel ring B on the water stable layer. Similarly, the center of the circular steel ring B is on the same vertical line as the center of the shaft of the inspection well.

[0015] Step eight: Fill sand in the circular steel ring B, and compact it with small tools such as impact rammer, so that the sand in the circular steel ring B is compacted to more than 90%.

[0016] Step nine: The first layer of the road asphalt layer is paved by the paver, and after the paver passes the position of the circular steel ring B, the paving material above the circular steel ring B is cleaned to expose the circular steel ring B and the filled sand.

[0017] Step ten: Roll the paved road asphalt layer according to the specification requirements.

[0018] Step eleven: Place another section of the circular steel ring B above the fixed circular steel ring B, and fix the two sections of the circular steel ring B into a whole through the bolts and nuts.

[0019] Step twelve: Repeat steps eight to eleven above to pave the road asphalt layer in turn until the paving of the asphalt intermediate layer of the road asphalt layer is completed.

[0020] Step thirteen: Remove the circular steel ring A and the circular steel ring B layer by layer, clean the filled sand, take away the steel plate at the manhole of the inspection well, build the shaft of the inspection well to the designed height, install and fix the manhole cover according to the design drawings, pour concrete in the holes around the shaft of the inspection well, and after the curing period of the concrete ends, pave the asphalt surface layer after laying geogrid around the inspection well.

[0021] In the step four, the turning is not allowed on the circular steel ring A during the rolling, and the small road roller is used to supplement the ramming of the circular steel ring A.

[0022] In the step ten, the turning is not allowed on the circular steel ring B during the rolling, and the small road roller is used to supplement the ramming of the circular steel ring B.

[0023] The present application has the following beneficial effects:

[0024] 1. The quality of the road structure layer around the inspection well is ensured, and the integrity of the road structure layer around the inspection well is maximally ensured by not disturbing the structure layer around the inspection well during the construction around the inspection well.

[0025] 2. The construction cost is reduced, the method of reserving the inspection well and the reinforcing working surface can save the road structure layer material in the reinforcing range of the inspection well, and the material in the range is not wasted by the back excavation.

[0026] 3. The layered step construction reduces the reflection crack. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the schematic diagram of the lifting and reinforcing tool structure of the present application;

[0028] Figure 2 It is the schematic diagram of the side view structure of the lifting and reinforcing tool of the present application;

[0029] Figure 3 It is the schematic diagram of the circular steel ring A structure of the present application;

[0030] Figure 4 It is the enlarged schematic diagram of the connection of the circular steel ring B of the present application.

[0031] In the figure, 1 is the circular steel ring A, 2 is the connecting lug, 3 is the reserved hole, 4 is the bolt and nut, 5 is the stiffening rib, 6 is the anchoring steel nail A, 7 is the circular steel ring B, and 8 is the anchoring steel nail B. DETAILED DESCRIPTION

[0032] The specific embodiments of the present application are given below, and it should be noted that the present application is not limited to the following specific embodiments, and any equivalent transformation based on the technical scheme of the present application is within the protection scope of the present application.

[0033] The lifting reinforcement tool for protecting the structure layer around the inspection well comprises a plurality of circular steel rings A1 and a plurality of circular steel rings B7, the circular steel ring A1 and the circular steel ring B7 are completely same in structure, and the difference between the two is that the diameters of the two are not equal, the diameter of the circular steel ring B7 is larger than that of the circular steel ring A1, and the diameters of the two are both larger than the diameter of the well shaft of the inspection well. Preferably, the diameter of the circular steel ring A1 is 80 cm larger than the diameter of the well shaft of the inspection well, and the diameter of the circular steel ring B7 is 60 cm larger than the diameter of the circular steel ring A1. The number of the circular steel ring A1 used is determined according to the designed layers of the road subbase and the road base, and each layer of the road subbase and the road base to be paved corresponds to a circular steel ring A1, and the heights of the plurality of circular steel rings A1 are respectively consistent with the thicknesses of the road subbase and each layer of the road base designed. The number of the circular steel ring B7 used is determined according to the designed layers of the road asphalt layer, and the road asphalt layer to be paved corresponds to the circular steel ring B7, and the heights of the plurality of circular steel rings B7 are respectively consistent with the thicknesses of each layer of the road asphalt layer designed.

[0034] Since the circular steel ring A1 and the circular steel ring B7 are same in structure, only the structure of the circular steel ring A1 is introduced here, the inner wall of the circular steel ring A1 is uniformly welded with a plurality of stiffening ribs 5, the stiffening rib 5 in the embodiment is a vertical strip block, and the stiffening rib 5 is used to enhance the overall strength of the circular steel ring A1. The upper end and the lower end of the stiffening rib 5 are both welded with a connecting lug 2, the connecting lug 2 at the upper end is flush with the upper surface of the circular steel ring A1, the connecting lug 2 at the lower end is flush with the lower surface of the circular steel ring A1, and a reserved hole 3 is arranged on the connecting lug 2.

[0035] The circular steel rings A1 adjacent to each other in the upper and lower directions can be fixed together by passing through the reserved holes 3 of the corresponding connecting lugs 2 and by using bolts and nuts 4, and the circular steel rings B7 adjacent to each other in the upper and lower directions can also be fixed together by passing through the reserved holes 3 of the corresponding connecting lugs 2 and by using bolts and nuts 4.

[0036] The anchor steel nail A6 is punched into the reserved hole 3 of the lower end connecting lug 2 of the circular steel ring A1 located at the bottommost position, and the anchor steel nail A6 is anchored on the roadbed around the inspection well, the anchor steel nail B8 is punched into the reserved hole 3 of the lower end connecting lug 2 of the circular steel ring B7 located at the bottommost position, and the anchor steel nail B8 is anchored on the water stable layer around the inspection well.

[0037] Using the lifting reinforcement tool for protecting the structure layer around the inspection well, the application provides a construction method for protecting the structure layer around the inspection well, which comprises the following steps.

[0038] Step one: place a circular steel ring A1 at the position of the inspection well, so that the center of the circular steel ring A1 is on the same vertical line with the center of the well shaft of the inspection well. Punch the anchor steel nail into the reserved hole 3 of the connecting lug 2 at the lower end of the circular steel ring A1, anchor the circular steel ring A1 on the roadbed, and use the steel plate to temporarily cover the well mouth of the inspection well.

[0039] Step two: fill sand in the circular steel ring A1, use small tools such as impact rammer to compact, so that the sand compaction degree in the circular steel ring A1 reaches more than 90%.

[0040] Step three: the paver spreads the road subbase, the height of the circular steel ring A1 in the above step one is equal to the thickness of the road subbase to be paved. After the paver passes the position of the circular steel ring A1, the paving material above the circular steel ring A1 is immediately cleaned manually, so that the circular steel ring A1 and the filling sand in the circular steel ring A1 are exposed, and the cleaned paving material is evenly spread to the four sides of the circular steel ring A1.

[0041] Step four: roll the paving material in step three according to the specification requirements, do not turn on the circular steel ring A1 when rolling, and use a small roller to supplement the ramming of the circular steel ring A1.

[0042] Step five: place another section of the circular steel ring A1 on the fixed circular steel ring A1, align the connecting ears 2 of the two sections of the circular steel ring A1, then use the bolt to pass through the reserved hole 3 of the upper connecting ear 2 of the lower section of the circular steel ring A1 and the reserved hole 3 of the lower connecting ear 2 of the upper section of the circular steel ring A1, and fix the bolt with a nut, so as to fix the two sections of the circular steel ring A1 into a whole through the bolt and nut 4. The thickness of the other section of the circular steel ring A1 used is equal to the thickness of the road base to be paved.

[0043] Step six: repeat the above steps two to five to pave the road base in turn, the height of the circular steel ring A1 used each time is consistent with the thickness of the road base to be paved, until the construction of all the road base is completed.

[0044] Step seven: after the maintenance period of the uppermost layer of the water stable layer of the road base ends and is accepted, place a section of the circular steel ring B7 outside the circular steel ring A1, and drive an anchor steel nail B8 into the reserved hole 3 on the connecting ear 2 at the lower end of the circular steel ring B7 to anchor the circular steel ring B7 on the water stable layer. Similarly, the center of the circular steel ring B7 is on the same vertical line as the center of the well shaft.

[0045] Step eight: fill sand in the circular steel ring B7, use small tools such as impact rammer to compact, so that the sand compaction degree in the circular steel ring B7 reaches more than 90%.

[0046] Step nine: the paver spreads the first layer of road asphalt, after the paver passes the position of the circular steel ring B7, the paving material above the circular steel ring B7 is immediately cleaned manually, so that the circular steel ring B7 and the filling sand in the circular steel ring B7 are exposed, and the cleaned paving material is evenly spread to the four sides of the circular steel ring B7.

[0047] Step ten: roll the paved road asphalt according to the specification requirements, do not turn on the circular steel ring B7 when rolling, and use a small roller to supplement the ramming of the circular steel ring B7.

[0048] Step eleven: place another circular steel ring B7 on the fixed circular steel ring B7, align the connecting ears 2 of the two circular steel rings B7, then use the bolt to pass through the reserved hole 3 of the upper end connecting ear 2 of the lower circular steel ring B7 and the reserved hole 3 of the lower end connecting ear 2 of the upper circular steel ring B7, and fix the bolt with the nut, so as to fix the two circular steel rings B7 into a whole by the bolt and nut 4. The thickness of the used another circular steel ring B7 is equal to the thickness of the road asphalt layer to be paved.

[0049] Step twelve: repeat the above steps eight to eleven to pave the road asphalt layer in turn, the height of the used circular steel ring B7 is consistent with the thickness of the road asphalt layer to be paved, until the paving of the asphalt intermediate surface layer of the road asphalt layer is completed.

[0050] Step thirteen: remove the circular steel ring A1 and the circular steel ring B7 layer by layer, clean the filling sand in the circular steel ring A1 and the circular steel ring B7, take away the steel plate at the manhole well mouth, build the manhole shaft to the designed height, and install and fix the manhole cover according to the design drawing. Since the circular steel ring A1 and the circular steel ring B7 are removed, a hole is formed between the manhole shaft, the hole is T-shaped and annular, the concrete is poured in the hole around the manhole shaft, after the curing period of the concrete ends, the geogrid is laid around the manhole after the reinforcement, and then the asphalt surface layer is paved. The laid geogrid reduces the reflection cracks around the manhole. The T-shaped annular concrete formed around the manhole increases the anti-settlement ability around the manhole.

[0051] The above-described embodiment is only one of the preferred specific embodiments of the present application, and the usual changes and replacements made by those skilled in the art within the scope of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. A construction method for protecting a structure layer around a manhole, characterized by: The utility model relates to a kind of inspection well protection device, including several circular steel rings A (1), the inner wall of the circular steel ring A (1) is evenly welded with several stiffeners (5), the upper end and the lower end of stiffener (5) are welded connecting lug (2), connecting lug (2) is flush with the upper surface or lower surface of circular steel ring A (1), and connecting lug (2) is equipped with reserved hole (3);Still including several circular steel rings B (7), the circular steel ring B (7) is same with circular steel ring A (1) structure, circular steel ring B (7) diameter is greater than circular steel ring A (1) diameter, and circular steel ring A (1) diameter is greater than inspection well shaft diameter;Up and down adjacent circular steel ring A (1) or up and down adjacent circular steel ring B (7) are fixed together by bolt nut (4) passing through reserved hole (3);Including the following steps: Step one: one circular steel ring A (1) is placed in inspection well position, and the center of circular steel ring A (1) is on the same vertical line with the center of inspection well shaft;Anchor steel nail A (6) is driven in the reserved hole (3) on the lower end connecting lug (2) of circular steel ring A (1), and circular steel ring A (1) is anchored on roadbed;Steel plate is used to temporarily cover inspection well mouth position; Step two: sand is filled in circular steel ring A (1), and is compacted using impact tamper, so that the sand compaction degree in circular steel ring A (1) reaches more than 90%; Step three: road subbase is paved by paving machine, and the height of circular steel ring A (1) is equal to the thickness of the road subbase to be paved;After paving machine passes the position of circular steel ring A (1), paving material above circular steel ring A (1) is cleaned by hand immediately, and circular steel ring A (1) and filled sand are exposed; Step four: the paving material of step three is rolled; Step five: another circular steel ring A (1) is placed on the fixed circular steel ring A (1), and two circular steel rings A (1) are fixed as a whole by bolt nut (4); Step six: steps two to five are repeated, and the paving of each layer of road base is carried out in turn until the construction of all road bases is completed; Step seven: after the curing period of the uppermost layer of water stable layer of road base ends and is accepted, a circular steel ring B (7) is placed outside the circular steel ring A (1), anchor steel nail B (8) is driven in the reserved hole (3) of the lower end connecting lug (2) of circular steel ring B (7), and circular steel ring B (7) is anchored on the water stable layer, and the center of circular steel ring B (7) is on the same vertical line with the center of inspection well shaft; Step eight: sand is filled in circular steel ring B (7), and is compacted using impact tamper, so that the sand compaction degree in circular steel ring B (7) reaches more than 90%; Step nine: the first layer of road asphalt layer is paved by paving machine, and after paving machine passes the position of circular steel ring B (7), paving material above circular steel ring B (7) is cleaned, and circular steel ring B (7) and filled sand are exposed; Step ten: the paved road asphalt layer is rolled according to the specification; Step eleven: another circular steel ring B (7) is placed on the fixed circular steel ring B (7), and two circular steel rings B (7) are fixed as a whole by bolt nut (4); Step twelve: repeat the above step eight-step eleven, in turn, the road asphalt layer paving, until the completion of the road asphalt layer asphalt surface course paving; Step thirteen: layer by layer to remove the circular steel ring A (1) and circular steel ring B (7), and clean fill sand, take away the inspection well mouth steel plate, inspection well shaft to the design height, according to the design drawings installed fixed inspection well cover, in the inspection well shaft around the hole in the pouring of concrete, after the concrete curing period ends, in the inspection well around the paving geogrid reinforcement, paving asphalt surface.

2. The construction method of protecting the structure layer around the inspection well according to claim 1, characterized in that: The height of the several circular steel ring A (1) is consistent with the design thickness of each layer of road subbase and road base respectively; the height of the several circular steel ring B (7) is consistent with the design thickness of each layer of road asphalt layer respectively.

3. The method of claim 1, wherein: The diameter of the circular steel ring A (1) is 80 cm larger than the diameter of the inspection well shaft, and the diameter of the circular steel ring B (7) is 60 cm larger than the diameter of the circular steel ring A (1).

4. The method of claim 1, wherein: In step four, the circular steel ring A (1) should not be turned on when rolling, and a small roller is used to supplement the ramming of the circular steel ring A (1) for reinforcement.

5. The method of constructing a structural layer around a manhole according to Claim 1, characterized in that: In step ten, the circular steel ring B (7) should not be turned on when rolling, and a small roller is used to supplement the ramming of the circular steel ring B (7) for reinforcement.

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