A construction method for coordinated construction of heavy-duty manhole covers and road surface structures on municipal roads

Abstract

The present application relates to a construction method for the coordinated construction of a heavy-duty manhole cover and a pavement structure on a municipal road, which includes the following steps: Step 1: During the construction of the roadbed, the manhole is installed at a preset position; Step 2: A steel cage is laid on the roadbed, and the manholes are further stacked on the manhole to make the manhole depth reach the designed height. The outer periphery of the manhole is coated with a number of load-bearing steel bars, and the load-bearing steel bars are all fixed to the steel cage; Step 3: A gravel layer is laid on the roadbed, and the steel cage is buried in the gravel layer; Step 4: An annular manhole seat is set on the top of the uppermost manhole, and the annular manhole seat is fixed to the load-bearing steel bars; Step 5: Cement-stabilized concrete is poured on the gravel layer to form a water-stable base layer, and the bottom of the annular manhole seat is embedded in the water-stable base layer; Step 6: The manhole cover is installed on the annular manhole seat, and a bonding layer and an asphalt surface layer are laid in sequence on the water-stable base layer. The present application has the effect of preventing the road surface around the manhole cover from being easily damaged.

Description

Technical Field

[0001] The present application relates to the technical field of municipal engineering, and in particular to a construction method for the coordinated construction of heavy-duty manhole covers and road pavement structures on municipal roads. Background Art

[0002] Used to cover deep manholes on roads to prevent people or objects from falling. During the construction of municipal infrastructure, the installation of heavy manhole covers on motor vehicle lanes and the construction of pavement around the manholes are relatively weak links in quality control in municipal road construction.

[0003] At present, the construction process of municipal manhole covers and roads is usually to temporarily fix the manhole covers during the asphalt paving process of the road surface. After the surface asphalt construction is completed, the asphalt layer at the wellhead position is cut, and the manhole seat is installed at the entrance position. The manhole seat is fixed to the bottom surface with expansion bolts, and then the manhole cover is installed on the manhole seat. However, during the construction of the road, due to the influence of road load and vibration, the connection between the manhole seat and the road surface is prone to loosening, resulting in the stress on the manhole seat and the manhole cover being difficult to effectively disperse to the road surface structure around the manhole cover. Over time, the road surface around the manhole cover is prone to damage, seriously affecting the driving safety of vehicles on the road. Summary of the Invention

[0004] In order to solve the problem that the road surface around the manhole cover is easily damaged, the present application provides a construction method for the coordinated construction of heavy-duty manhole covers and road surface structures on municipal roads.

[0005] This application provides a construction method for the coordinated construction of heavy-duty manhole covers and road surface structures on municipal roads, which adopts the following technical solutions:

[0006] A construction method for the coordinated construction of a heavy-duty manhole cover and a road surface structure on a municipal road comprises the following steps:

[0007] Step 1: Construction of the roadbed. During the construction of the roadbed, the wellbore is installed at a preset position and buried in the roadbed.

[0008] Step 2: Construction of steel cage: Lay the steel cage on the roadbed, and continue to stack the wellbore on the wellbore to make the well depth reach the designed height. Use concrete mortar to seal the gap between the two adjacent wellbore. The outer periphery of the wellbore is covered with a number of bearing steel bars, and each bearing steel bar is tied and fixed, and the bearing steel bars are all fixed to the steel cage;

[0009] Step 3: Sand and gravel layer construction: fill the roadbed with crushed stone and gravel to form a sand and gravel layer, and bury the steel cage in the sand and gravel layer;

[0010] Step 4: Install the annular well seat. Install the annular well seat on the top of the uppermost well shaft and fix it to the bearing steel bars. The annular well seat is provided with a placement slot that matches the well cover.

[0011] Step 5: Construction of water-stable base: pour cement-stabilized concrete on the sand and gravel layer to form a water-stable base, and embed the bottom of the annular well seat in the water-stable base;

[0012] Step 6: Road surface construction: Install the manhole cover on the annular manhole seat, and lay the bonding layer and asphalt surface layer on the water-stable base from bottom to top. The upper surface of the asphalt surface layer is flush with the top of the manhole cover.

[0013] By adopting the above technical solution, the annular manhole seat is fixed to the steel cage in the gravel layer through the load-bearing steel bars. When the road is in use, the load on the annular manhole seat and the manhole cover is transferred to the steel cage through the load-bearing steel bars, and the stress is offset by the water-stable base layer and the gravel layer, so that the stress on the annular manhole seat and the manhole cover is effectively dispersed to the pavement structure around the manhole cover. In addition, through the setting of the load-bearing steel bars, the connection between the annular manhole seat and the road surface is not easy to loosen, which greatly reduces the possibility of damage to the road surface around the manhole cover.

[0014] Optionally, in step three, the gravel layer needs to be vibrated when it is laid, and after the gravel layer is laid, the top of the gravel layer needs to be 5-10 cm higher than the top of the steel cage.

[0015] By adopting the above technical solution, after the gravel layer is laid, it is vibrated to fill the steel cage with gravel and crushed stone, avoiding the formation of voids in the steel cage, which may cause the road to collapse during use later.

[0016] Optionally, in step five, during the construction of the water-stable base layer, a portion of the cement-stabilized concrete is allowed to enter the sand and gravel layer.

[0017] By adopting the above technical solution, when the sand and gravel layer is vibrated, smaller gravels will fall to the bottom of the sand and gravel layer, while larger crushed stones are located above the sand and gravel layer. There is a certain gap between each crushed stone block. During the construction of the water-stabilized base layer, part of the cement-stabilized concrete is allowed to enter the sand and gravel layer to fix the crushed stones above the sand and gravel layer, thereby increasing the stability of the sand and gravel layer.

[0018] Optionally, a plurality of first insertion rods are fixedly provided at the bottom end of the wellbore, and the first insertion rods are distributed at equal intervals along the circumference of the wellbore, and the length direction of the first insertion rods is parallel to the axial direction of the wellbore, and a plurality of insertion holes are opened at the top end of the wellbore along the axial direction of the wellbore, and the insertion holes correspond one-to-one to the first insertion rods.

[0019] By adopting the above technical solution, when the wellbores are stacked, the first insertion rods at the bottom of the upper wellbores are respectively inserted into the corresponding insertion holes on the lower wellbores, thereby increasing the firmness of the connection between the two wellbores.

[0020] Optionally, a mounting groove for inserting the wellbore is provided on the annular well seat, and a plurality of second insertion rods are fixedly arranged in the mounting groove, and the second insertion rods correspond one-to-one to the insertion holes on the wellbore.

[0021] By adopting the above technical solution, when the annular well seat is installed on the top wellbore, the top wellbore is inserted into the installation groove of the annular well seat, and the second insertion rods on the annular well seat are respectively inserted into the corresponding insertion holes on the top wellbore, so as to facilitate limiting the position of the wellbore and the annular well seat.

[0022] Optionally, a plurality of ribs are fixedly provided on the bottom of the annular well seat, and each of the ribs is provided with a binding hole for allowing a steel wire to pass through.

[0023] By adopting the above technical solution, the annular well seat and the load-bearing steel bars can be easily tied and fixed through the reinforcement plate and the binding holes on the reinforcement plate.

[0024] Optionally, a sealing ring sleeve is further included, which includes a first ring body, a second ring body, a rubber sealing sleeve and a binding belt. The first ring body and the second ring body are respectively used to be mounted on two adjacent wellbores. The rubber sealing sleeve is arranged between the first ring body and the second ring body, and the two ends of the rubber sealing sleeve are respectively connected to the first ring body and the second ring body. The binding belt is used to bind and fix the rubber sealing sleeve to the wellbore.

[0025] By adopting the above technical solution, water seepage and other problems often occur at the joints of the two wellbores. When the two wellbores are docked, a sealing ring is set at the connection of the two wellbores, and the first ring body and the second ring body are respectively set on the two adjacent wellbores. At this time, the rubber sealing sleeve is set at the joint of the two wellbores, and then the binding belt is wrapped around the outside of the rubber sealing sleeve to make the rubber sealing sleeve close to the joint position of the two wellbores, thereby increasing the sealing of the joint of the two wellbores.

[0026] Optionally, the first ring body is provided with a plurality of first through holes, and the second ring body is provided with a plurality of second through holes, the first through holes correspond to the second through holes one by one, and the first through holes and the second through holes are both used for allowing load-bearing steel bars to pass through, and the first ring body and the second ring body are respectively fixed to the load-bearing steel bars.

[0027] By adopting the above technical solution, when constructing the load-bearing steel bars on the periphery of the wellbore, the load-bearing steel bars are passed through the first through hole on the first ring body and the second through hole on the second ring body, and then the first ring body and the second ring body are respectively tied and fixed to the load-bearing steel bars, thereby fixing the first ring body and the second ring body and increasing the firmness of the connection between the load-bearing steel bars and the wellbore.

[0028] Optionally, in step six, when laying the asphalt surface layer, pour asphalt concrete on the bonding layer and flatten the asphalt concrete so that the flattened asphalt concrete is higher than the top of the manhole cover, and the part of the asphalt concrete higher than the manhole cover is equal to 1 / 3-1 / 2 of the overall thickness of the asphalt concrete. Then, the entire road surface is compacted so that the upper surface of the formed asphalt surface layer is flush with the top of the manhole cover.

[0029] By adopting the above technical solution, when the asphalt concrete is spread on the bonding layer, the asphalt concrete is made higher than the top of the manhole cover, and then the asphalt concrete is rolled. During the rolling process of the asphalt concrete, the gaps inside the asphalt concrete are compressed until the upper surface of the asphalt surface layer is flush with the top of the manhole cover, so that the asphalt surface layer is spread and rolled into shape at one time, thereby improving the synergy between the asphalt surface layer and the manhole cover, making the road surface smoother, and further reducing the possibility of damage to the road surface around the manhole cover.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The annular manhole seat is fixed to the steel cage in the gravel layer through load-bearing steel bars. When the road is in use, the load on the annular manhole seat and the manhole cover is transferred to the steel cage through the load-bearing steel bars. The stress is offset by the water-stable base and the gravel layer, so that the stress on the annular manhole seat and the manhole cover is effectively dispersed to the road surface structure around the manhole cover. In addition, the installation of the load-bearing steel bars makes it difficult for the connection between the annular manhole seat and the road surface to loosen, greatly reducing the possibility of damage to the road surface around the manhole cover.

[0032] 2. The joints between two wellbores are often prone to water seepage. When the two wellbores are butt-jointed, a sealing ring is placed at the joint of the two wellbores, and the first ring body and the second ring body are respectively placed on the two adjacent wellbores. At this time, the rubber sealing sleeve is placed at the joint of the two wellbores. Then, a binding belt is wrapped around the outside of the rubber sealing sleeve to make the rubber sealing sleeve close to the joint position of the two wellbores, thereby improving the sealing of the joint between the two wellbores;

[0033] 3. When paving asphalt concrete on the bonding layer, make the asphalt concrete higher than the top of the manhole cover, and then roll the asphalt concrete. During the rolling process, compress the voids inside the asphalt concrete until the upper surface of the asphalt surface layer is flush with the top of the manhole cover, so that the asphalt surface layer can be paved and rolled into shape at one time, improving the coordination between the asphalt surface layer and the manhole cover, making the road surface smoother, and further reducing the possibility of damage to the road surface around the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the construction of the road base in the embodiment of the present application;

[0035] Figure 2This is a construction diagram used to express the steel cage and bearing steel bars in the embodiment of the present application;

[0036] Figure 3 This is a structural diagram of an embodiment of the present application used to express the coordination relationship between two wellbores;

[0037] Figure 4 is a cross-sectional view of the overall structure of an embodiment of the present application;

[0038] Figure 5 It is a structural schematic diagram of the annular well seat in the embodiment of the present application.

[0039] Explanation of the accompanying reference numerals: 1. roadbed; 2. shaft; 21. first plug rod; 22. insertion hole; 3. steel cage; 31. load-bearing steel bar; 4. sealing ring; 41. first ring body; 42. second ring body; 43. rubber sealing sleeve; 44. binding belt; 5. gravel layer; 6. annular well seat; 61. mounting groove; 62. second plug rod; 63. rib plate; 64. placement groove; 7. water-stabilizing base layer; 8. bonding layer; 9. asphalt surface layer. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-5 This application is described in further detail.

[0041] The present application discloses a method for coordinating the construction of a heavy-duty manhole cover and a road surface structure on a municipal road, comprising the following steps:

[0042] Step 1: Construction of road base 1;

[0043] Reference Figure 1 During the construction of the roadbed 1, the shaft 2 is installed at a preset position and pre-buried in the roadbed 1. The roadbed 1 is compacted so that the top of the shaft 2 is higher than the upper surface of the roadbed 1. The shaft 2 is made of reinforced concrete.

[0044] Step 2: Construction of steel cage 3;

[0045] Reference Figure 1 、 2 , lay the tied steel cage 3 on the roadbed 1, and continue to stack the well shaft 2 on top of the original well shaft 2 to make the well depth reach the designed height. In this application, the number of well shafts 2 is set to two in total, and the outer periphery of the well shaft 2 is covered with a plurality of bearing steel bars 31, and each bearing steel bar 31 is tied and fixed, and the bearing steel bars 31 are tied and fixed to the steel cage 3;

[0046] Reference Figure 3A plurality of first plug rods 21 are fixedly provided at the bottom end of the wellbore 2, and the first plug rods 21 are evenly spaced along the circumference of the wellbore 2, and the length direction of the first plug rods 21 is parallel to the axial direction of the wellbore 2. A plurality of insertion holes 22 are opened at the top end of the wellbore 2 along the axial direction of the wellbore 2, and the insertion holes 22 correspond one-to-one to the first plug rods 21.

[0047] Reference Figure 3 , and also includes a sealing ring sleeve 4 for being arranged at the joint position of two adjacent wellbores 2. The sealing ring sleeve 4 includes a first ring body 41, a second ring body 42, a rubber sealing sleeve 43 and a binding belt 44. The rubber sealing sleeve 43 is arranged between the first ring body 41 and the second ring body 42, and the two ends of the rubber sealing sleeve 43 are respectively connected to the first ring body 41 and the second ring body 42. The inner diameters of the first ring body 41 and the second ring body 42 are both adapted to the wellbores 2, and the binding belt 44 uses an anti-corrosion tape.

[0048] Reference Figure 2 、 3 Before stacking the wellbore 2, the first ring body 41 and the second ring body 42 are both sleeved on the constructed wellbore 2. When stacking the wellbore 2, the first insertion rods 21 at the bottom of the upper wellbore 2 are respectively inserted into the corresponding insertion holes 22 on the lower wellbore 2, and then the gap between the two adjacent wellbores 2 is sealed with concrete mortar. Then, the first ring body 41 is sleeved on the wellbore 2 located above, and the second ring body 42 is continued to be sleeved on the wellbore 2 located below, so that the rubber sealing sleeve 43 covers the joint position of the two wellbores 2, and then the binding belt 44 is wrapped and covered on the outside of the rubber sealing sleeve 43, so that the rubber sealing sleeve 43 is close to the joint position of the two wellbores 2, thereby increasing the sealing performance of the joint between the two wellbores 2.

[0049] Reference Figure 2 、 3 A plurality of first through holes are provided on the first ring body 41, and the plurality of first through holes are evenly spaced along the circumference of the first ring body 41. A plurality of second through holes are provided on the second ring body 42, and the second through holes on the second ring body 42 correspond one-to-one to the first through holes on the first ring body 41. When the load-bearing steel bars 31 are tied, a part of the load-bearing steel bars 31 is passed through the first through holes on the first ring body 41 and the second through holes on the second ring body 42 at the same time, and the first ring body 41 and the second ring body 42 are respectively tied and fixed to the tying steel bars.

[0050] Step 3: Construction of sand and gravel layer 5;

[0051] Reference Figure 4, fill crushed stone and gravel on the roadbed 1 to form a gravel layer 5, and bury the steel cage 3 in the gravel layer 5. The volume of crushed stone needs to be smaller than the mesh size on the steel cage 3. The proportion of gravel in the gravel layer 5 is 20%-30%. When laying the gravel layer 5, it is necessary to continuously vibrate the gravel layer 5. After the laying of the gravel layer 5, the top of the gravel layer 5 needs to be 5-10 cm higher than the top of the steel cage 3. When vibrating the gravel layer 5, the top of the gravel layer 5 can be hit with a heavy object to achieve the purpose of vibrating the gravel layer 5.

[0052] Step 4: Install the annular well seat 6;

[0053] Reference Figure 4 、 5 The bottom wall of the annular well seat 6 is provided with a mounting groove 61, which is adapted to the wellbore 2. A plurality of second plug rods 62 are fixedly arranged in the mounting groove 61, and the second plug rods 62 correspond one-to-one to the sockets 22 on the wellbore 2; the annular well seat 6 is hoisted to the top of the wellbore 2, so that the uppermost wellbore 2 is inserted into the mounting groove 61 of the annular well seat 6, and the second plug rods 62 on the annular well seat 6 are respectively inserted into the corresponding sockets 22 on the uppermost wellbore 2.

[0054] Reference Figure 3 、 5 A plurality of ribs 63 are fixedly provided at the bottom of the annular well seat 6. Each rib 63 is provided with a binding hole. The steel wire is passed through the binding hole, and the annular well seat 6 and the load-bearing steel bar 31 are bound and fixed. A placement groove 64 is also provided on the top wall of the well seat, and the placement groove 64 is adapted to the shape and size of the well cover.

[0055] Step 5: Construction of water-stable base 7;

[0056] Reference Figure 4 , introduce the mixed cement-stabilized concrete onto the sand and gravel layer 5 to form a water-stable base layer 7, then smooth the water-stable base layer 7, and embed a portion of the cement-stabilized concrete at the bottom of the water-stable base layer 7 into the sand and gravel layer 5 to reinforce the gravel above the sand and gravel layer 5 and increase the stability of the sand and gravel layer 5. The bottom of the annular well seat 6 is embedded in the water-stable base layer 7.

[0057] Step 6: Road surface construction;

[0058] Reference Figure 4 After the cement-stabilized concrete in the water-stable base layer 7 solidifies, the manhole cover is installed in the placement groove 64 on the annular manhole seat 6, and the bonding layer 8 and the asphalt surface layer 9 are laid on the water-stable base layer 7 from bottom to top. The bonding layer 8 is laid and rolled by cold-mixed asphalt macadam.

[0059] Reference Figure 4When laying the asphalt surface layer 9, pour asphalt concrete on the bonding layer 8 and flatten the asphalt concrete so that the flattened asphalt concrete is higher than the top of the manhole cover, and the part of the asphalt concrete higher than the manhole cover is equal to 1 / 3-1 / 2 of the thickness of the asphalt concrete before rolling. Then the entire road surface is rolled. During the rolling process of the asphalt concrete, the voids inside the asphalt concrete are compressed until the upper surface of the asphalt surface layer 9 is flush with the top of the manhole cover, completing the laying of the asphalt surface layer 9. The asphalt surface layer 9 is paved and rolled into shape at one time, thereby improving the synergy between the asphalt surface layer 9 and the manhole cover, making the road surface smoother, and further reducing the possibility of damage to the road surface around the manhole cover.

[0060] The implementation principle of the construction method of the embodiment of the present application for the coordinated construction of a heavy-duty manhole cover and a pavement structure on a municipal road is as follows: when the roadbed layer 1 is being constructed, a well shaft 2 is installed at a preset position, and the well shaft 2 is pre-buried in the roadbed layer 1, and the roadbed layer 1 is compacted, and the top of the well shaft 2 is made higher than the upper surface of the roadbed layer 1, and the first ring body 41 and the second ring body 42 of the sealing ring sleeve 4 are both sleeved on the well-constructed well shaft 2, and the well shaft 2 is further stacked on the original well shaft 2 to make the well depth reach the designed height. When the well shaft 2 is stacked, , insert the first insertion rods 21 at the bottom of the upper shaft 2 into the corresponding insertion holes 22 on the lower shaft 2 respectively, and then seal the gap between the two adjacent shafts 2 with concrete mortar, and then put the first ring body 41 on the upper shaft 2, and continue to put the second ring body 42 on the lower shaft 2, so that the rubber sealing sleeve 43 covers the joint position of the two shafts 2, and then wrap and cover the binding belt 44 around the outside of the rubber sealing sleeve 43, so that the rubber sealing sleeve 43 is close to the joint position of the two shafts 2.

[0061] The tied steel cage 3 is laid on the roadbed layer 1, and the load-bearing steel bars 31 are set on the periphery of the well shaft 2. A part of the load-bearing steel bars 31 are passed through the first through hole on the first ring body 41 and the second through hole on the second ring body 42 at the same time, and the first ring body 41 and the second ring body 42 are respectively tied and fixed with the tying steel bars, and the load-bearing steel bars 31 are tied and fixed to each other, and the load-bearing steel bars 31 are all tied and fixed to the steel cage 3. Then, crushed stone and gravel are filled on the roadbed layer 1 to form a sand and gravel layer 5, and the annular well seat 6 is hoisted to the top of the well shaft 2, so that the uppermost well shaft 2 is inserted into the installation groove 61 of the annular well seat 6, and the second insertion rods 62 on the annular well seat 6 are respectively inserted into the corresponding insertion holes 22 on the uppermost well shaft 2, and the annular well seat 6 and the load-bearing steel bars 31 are tied and fixed.

[0062] The mixed cement-stabilized concrete is introduced onto the gravel layer 5 to form a water-stable base layer 7, which is then smoothed. A portion of the cement-stabilized concrete at the bottom of the water-stable base layer 7 is embedded in the gravel layer 5, and the bottom of the annular well seat 6 is embedded in the water-stable base layer 7. After the cement-stabilized concrete in the water-stable base layer 7 solidifies, the manhole cover is installed in the placement groove 64 on the annular well seat 6, and a bonding layer 8 and an asphalt surface layer 9 are laid on the water-stable base layer 7 from bottom to top. When laying the asphalt surface layer 9, pour the asphalt concrete on the bonding layer 8 and flatten the asphalt concrete so that the flattened asphalt concrete is higher than the top of the manhole cover, and the part of the asphalt concrete higher than the manhole cover is equal to 1 / 3-1 / 2 of the thickness of the asphalt concrete before rolling. Then the entire road surface is rolled until the upper surface of the asphalt surface layer 9 is flush with the top of the manhole cover.

[0063] The annular manhole seat 6 is fixed to the steel cage 3 in the gravel layer 5 by the load-bearing steel bars 31. When the road is in use, the load on the annular manhole seat 6 and the manhole cover is transferred to the steel cage 3 through the load-bearing steel bars 31, and the stress is offset by the water-stable base layer 7 and the gravel layer 5, so that the stress on the annular manhole seat 6 and the manhole cover is effectively dispersed to the road surface structure around the manhole cover. In addition, the arrangement of the load-bearing steel bars 31 makes it difficult for the connection of the annular manhole seat 6 to the road surface to loosen, which greatly reduces the possibility of damage to the road surface around the manhole cover.

[0064] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A construction method for the coordinated construction of heavy-duty manhole covers and road surface structures on municipal roads, characterized by: The following steps are involved: Step 1: Construction of the roadbed (1). During the construction of the roadbed (1), the shaft (2) is installed at a preset position and the shaft (2) is buried in the roadbed (1); Step 2: Construction of the steel cage (3): laying the steel cage (3) on the roadbed (1); stacking the wellbore (2) on the wellbore (2) until the well depth reaches the designed height; sealing the gap between two adjacent wellbores (2) with concrete mortar; and wrapping the outer periphery of the wellbore (2) with a plurality of bearing steel bars (31); and tying and fixing each bearing steel bar (31) to each other, and fixing each bearing steel bar (31) to the steel cage (3); Step 3: Construction of the gravel layer (5): filling crushed stone and gravel onto the road base (1) to form a gravel layer (5), and burying the steel cage (3) in the gravel layer (5); Step 4: Install the annular well seat (6). Install the annular well seat (6) on the top of the uppermost well shaft (2), and fix the annular well seat (6) to the bearing steel bar (31). The annular well seat (6) is provided with a placement groove (64) that matches the well cover. Step 5: Construction of the water-stable base layer (7): pour cement-stabilized concrete on the sand and gravel layer (5) to form a water-stable base layer (7), and embed the bottom of the annular well seat (6) in the water-stable base layer (7); Step 6: Road surface construction: install the manhole cover on the annular manhole seat (6), and lay the bonding layer (8) and the asphalt surface layer (9) from bottom to top on the water-stable base layer (7). The upper surface of the asphalt surface layer (9) is flush with the top of the manhole cover; The invention also includes a sealing ring sleeve (4), wherein the sealing ring sleeve (4) includes a first ring body (41), a second ring body (42), a rubber sealing sleeve (43) and a binding belt (44), wherein the first ring body (41) and the second ring body (42) are respectively used to be sleeved on two adjacent wellbores (2), the rubber sealing sleeve (43) is arranged between the first ring body (41) and the second ring body (42), and the two ends of the rubber sealing sleeve (43) are respectively connected to the first ring body (41) and the second ring body (42), and the binding belt (44) is used to bind and fix the rubber sealing sleeve (43) to the wellbores (2); The first ring body (41) is provided with a plurality of first through holes, and the second ring body (42) is provided with a plurality of second through holes. The first through holes correspond to the second through holes one by one, and the first through holes and the second through holes are both used for allowing the load-bearing steel bars (31) to pass through. The first ring body (41) and the second ring body (42) are respectively fixed to the load-bearing steel bars (31).

2. The method for coordinating the construction of a heavy-duty manhole cover and a road surface structure on a municipal road according to claim 1 is characterized in that: In step three, when the gravel layer (5) is laid, it is necessary to vibrate the gravel layer (5), and after the gravel layer (5) is laid, the top of the gravel layer (5) needs to be 5-10 cm higher than the top of the steel cage (3).

3. The method for coordinating the construction of a heavy-duty manhole cover and a road surface structure on a municipal road according to claim 2 is characterized in that: In step five, during the construction of the water-stable base layer (7), a portion of the cement-stabilized concrete is allowed to enter the sand and gravel layer (5).

4. The method for coordinating the construction of a heavy-duty manhole cover and a road surface structure on a municipal road according to claim 1 is characterized in that: A plurality of first insertion rods (21) are fixedly provided at the bottom end of the wellbore (2), and the first insertion rods (21) are distributed at equal intervals along the circumference of the wellbore (2), and the length direction of the first insertion rods (21) is parallel to the axial direction of the wellbore (2). A plurality of insertion holes (22) are opened at the top end of the wellbore (2) along the axial direction of the wellbore (2), and the insertion holes (22) correspond one-to-one to the first insertion rods (21).

5. The method for coordinating the construction of a heavy-duty manhole cover and a road surface structure on a municipal road according to claim 4 is characterized in that: The annular well seat (6) is provided with a mounting groove (61) for inserting the wellbore (2), and a plurality of second insertion rods (62) are fixedly arranged in the mounting groove (61), and the second insertion rods (62) correspond one-to-one to the insertion holes (22) on the wellbore (2).

6. The method for coordinating the construction of a heavy-duty manhole cover and a road surface structure on a municipal road according to claim 1 is characterized in that: A plurality of ribs (63) are fixedly provided on the bottom of the annular well seat (6), and each rib (63) is provided with a binding hole for allowing a steel wire to pass through.

7. The method for coordinating the construction of a heavy-duty manhole cover and a road surface structure on a municipal road according to claim 1 is characterized in that: In step six, when laying the asphalt surface layer (9), asphalt concrete is poured on the bonding layer (8) and the asphalt concrete is flattened so that the flattened asphalt concrete is higher than the top of the manhole cover, and the portion of the asphalt concrete higher than the manhole cover is equal to 1 / 3-1 / 2 of the overall thickness of the asphalt concrete. The road surface is then rolled as a whole so that the upper surface of the formed asphalt surface layer (9) is flush with the top of the manhole cover.

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