CN113833027A - Construction method of manhole cover - Google Patents
Construction method of manhole cover Download PDFInfo
- Publication number
- CN113833027A CN113833027A CN202111123195.5A CN202111123195A CN113833027A CN 113833027 A CN113833027 A CN 113833027A CN 202111123195 A CN202111123195 A CN 202111123195A CN 113833027 A CN113833027 A CN 113833027A
- Authority
- CN
- China
- Prior art keywords
- well lid
- adjusting
- bolts
- gap
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 35
- 238000007689 inspection Methods 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 18
- 238000004873 anchoring Methods 0.000 claims abstract description 13
- 239000004567 concrete Substances 0.000 claims description 55
- 239000010410 layer Substances 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 15
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 15
- 241001330002 Bambuseae Species 0.000 claims description 15
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 15
- 239000011425 bamboo Substances 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 11
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/125—Manhole shafts; Other inspection or access chambers; Accessories therefor characterised by the lining of the shaft
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1427—Locking devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
Abstract
The invention belongs to the technical field of inspection well construction, and particularly relates to an inspection well cover construction method, which comprises the steps of firstly digging an annular well ring sunken towards the earth surface, arranging a jacking bolt for jacking and positioning a well cover and an anchoring bolt for fixing and fastening the well cover, wherein the jacking bolt can also form a gap between the bottom of the well cover and the bottom of the well ring, and the gap seals a lining template. A special tool is provided for plugging a gap between the shaft and the well cover by the annular inner membrane.
Description
Technical Field
The invention belongs to the technical field of inspection well construction, and particularly relates to a construction method of a well cover of an inspection well.
Background
The inspection well is used for maintaining power supply, water drainage, pollution discharge, communication, cable television, gas pipes, street lamp lines and the like of urban underground infrastructure, is convenient to install and is convenient for periodically inspecting auxiliary structures.
Conventional inspection well is when pouring well seat concrete, all not set up internal stay template device, but adopt fragment of brick or mortar to install the well seat, treat that the mortar reaches certain intensity, pour around the concrete again, it is not closely knit to seal easily in pit shaft inside like this, concrete production runs thick liquid below the well seat, produce the separation of thickness aggregate, and material intensity is inconsistent, can lead to later stage well seat bottom mortar, the fragment of brick, loose breakage appears in the concrete, thereby lead to the well lid to sink, the waste of material has been caused promptly, also hidden quality danger has been left for the installation of road engineering inspection well lid, based on this, it is necessary to study an inspection well lid construction method.
Disclosure of Invention
Aiming at the defects and problems of the existing equipment, the invention provides the inspection well lid construction method, which effectively solves the problem that the well lid sinks due to the fact that mortar, bricks and concrete at the bottom of a well base are loosened and broken in the later period because thick and thin aggregates are separated easily and the material strength is inconsistent in the existing equipment.
The technical scheme adopted by the invention for solving the technical problems is as follows: a construction method of a manhole cover of an inspection well comprises the following steps:
s1, firstly, roughening the top surface of the prefabricated reinforced concrete shaft, removing concrete laitance and loose stones, and forming an annular groove-shaped well ring at the upper part of the shaft;
s2, positioning and marking the positions of the well lid anchoring bolt and the top bracing bolt at the bottom of the well ring by using a bolt positioning tool;
s3, according to the positions marked by the anchor bolts and the top bracing bolts, implanting the anchor bolts and the top bracing bolts into the top surface of the prefabricated reinforced concrete shaft, wherein the anchor bolts are used for fixing the well lid, and the top bracing bolts are used for supporting the well lid, ensuring the position of the well lid to be horizontal, and enabling the well lid to have a gap with the bottom of the well ring;
s4, putting the well lid into the well ring, determining the placement height by using a top bracing bolt to enable the well lid to be in a horizontal position, corresponding a connecting hole of the well lid to an anchoring bolt, and fixing the well lid by using a nut after a gasket is additionally arranged at the end part of the anchoring bolt;
s5, lowering a lining template matched with the well lid, closing the gap by the lining template, tightly closing the gap, then erecting the lining template, sprinkling water to wet the periphery of the shaft and washing impurities clean;
s6, firstly adding base layer concrete into a gap between the well lid and the shaft, wherein the adding thickness of the base layer concrete is matched with the gap, after the gap is sealed, adding steel fibers into the middle area and the outer edge of the base concrete, then adding middle layer concrete, doping the steel fibers into the middle layer concrete, then adding surface layer concrete, ensuring the matching of the sealed concrete and the upper edge standard sealing position of the well lid, and finally vibrating and compacting by using a vibrator.
Further, the lining template comprises an annular inner membrane, a hoisting structure and an adjusting structure; the hoisting structure comprises a central hoisting block, a hoisting rope and a hoisting ring; lifting ropes are uniformly distributed on the upper part of the central lifting block, and the upper parts of the lifting ropes are fixed on the same lifting ring; the adjusting structure comprises an adjusting cylinder, an adjusting rod and a fixing wire; the inner end of the adjusting cylinder is fixed on the side surface of the central hanging block; the outer end opening is provided with the internal thread, the inner of adjusting the pole is provided with the external screw thread to threaded connection is in adjusting a section of thick bamboo, the outer end threaded connection of adjusting the pole has the fixed silk, the fixed silk shore is in the inner membraneous outside of annular, and the inner membraneous outside of annular is provided with the diaphragm layer.
Furthermore, the central hanging block is of a regular polygon structure, the interior of the central hanging block is hollow, so that a plurality of mounting platforms are formed on the outer side of the central hanging block, and the adjusting cylinder is fixed on the mounting platforms.
Further, the fixed arc roof that is provided with in end of fixed silk, the internal diameter adaptation of arc roof and annular inner membrance, the fixed silk is an internal thread section of thick bamboo, and the screw direction is the same with the screw direction of adjusting a section of thick bamboo.
Furthermore, a flexible friction pad is arranged on the outer side of the arc-shaped top plate; and an adjusting nut is fixedly sleeved on the adjusting rod.
Furthermore, the structure of the top bracing bolt is the same as that of the anchoring bolt, the middle parts of the two bolts are in threaded connection with positioning nuts, and the positioning nuts support the well lid from the bottom and are fastened by reinforcing nuts on the upper parts.
Further, the doping amount of the steel fiber is 30kg-40kg/m 3; the gap is 1-5 cm; the diameter of the top bracing bolt and the diameter of the anchor bolt are 18-25 mm.
Further, when the anchor bolts and the top bracing bolts are constructed, the top bracing bolts are installed firstly, and the heights of any two top bracing bolts are detected by a liquid level meter; then anchor bolts are constructed.
The invention has the beneficial effects that: in the aspect of construction technology, firstly, an annular well ring sunken towards the ground surface is dug, and a top support bolt for supporting and positioning the well cover and an anchor bolt for fixing and fastening the well cover are arranged, wherein the top support bolt can also form a gap between the bottom of the well cover and the bottom of the well ring, a lining template is blocked at the gap; then, adding middle-layer concrete on the upper part of the basic concrete, wherein the middle-layer concrete is internally provided with steel fibers, so that the overall stability of the middle-layer concrete is improved, and finally, constructing surface-layer concrete to ensure that the surface is matched with the pavement.
In order to position the lining template, the invention is provided with a hoisting structure and an adjusting structure, wherein the hoisting structure is used for connecting an external tool to hoist the annular inner membrane at a specified height, so that the annular inner membrane seals and compacts a gap between the well lid and the shaft, and slurry is prevented from flowing out from the gap.
When the specific adjustment is implemented, the adjusting cylinders are in a fixed state and are fixed on the plane mounting platform of the central hanging block, a plurality of adjusting cylinders are distributed outwards in a circumferential divergence shape by taking the central hanging block as the center, the adjusting cylinders can be fixed in a welding mode, and at least the outer sides of the adjusting cylinders are provided with internal threads.
When the method is implemented, according to different scenes, the following mode can be adopted, the overall structure can be adjusted in advance for the annular inner membrane which is commonly used, and the fixing wires are directly fixedly welded on the side wall of the annular inner membrane, so that the annular inner membrane is not replaced for a long time.
To the annular inner membrance that needs to be changed, can be fixed with the arc roof in the outside of fixed silk, the arc roof is changed according to the annular inner membrance of difference, and the fixed silk is an internal thread section of thick bamboo, and the screw direction is the same with the screw direction of adjusting a section of thick bamboo, because the arc roof is the arc structure, and artificial restriction top touches on the annular inner membrance, the last adjusting nut of operation regulation pole, make the regulation pole rotate, the regulation section of thick bamboo of unscrewing, and continue to screw in the fixed silk, touch in the fixed silk inner until the top, continue to screw in, play the jack-up effect, artificial restrictive force removes this moment, screw up adjusting nut, further fasten adjusting nut can.
Therefore, the annular inner membrane sealing device is novel in structure, adopts a new construction process, is stable in overall structure, is smooth in connection with the periphery, is convenient to operate, can be applied to different use scenes, is wide in application range, only needs to be provided with the annular inner membrane and the well lid matched with the wellbore with different inner diameters, adopts a hoisting mode to fix the annular inner membrane, only needs to adopt one supporting cross rod to penetrate through the hoisting ring during use, is convenient to use and simple and convenient to operate, and provides a special tool for plugging gaps between the wellbore and the well lid by the annular inner membrane for implementing the new construction process.
Drawings
FIG. 1 is a structural diagram of the present invention in a supporting state.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a schematic structural diagram of the adjustment structure.
Fig. 5 is a front view of fig. 4.
Fig. 6 is a top view of fig. 4.
Fig. 7 is a schematic structural view of the arc-shaped top plate.
FIG. 8 is a schematic top view of an embodiment of the present invention.
Fig. 9 is a schematic cross-sectional structure of the present invention.
The reference numbers in the figures are: the concrete-filled steel pipe-type well cover is characterized in that the concrete-filled steel pipe-type well cover comprises a central hanging block 1, a hanging rope 2, a hanging ring 3, an adjusting cylinder 4, an adjusting rod 5, a fixing wire 6, an arc-shaped top plate 7, an annular inner membrane 8, a friction surface 71, an installation platform 9, a central point 10, an adjusting nut 11, a shaft 12, a well ring 13, a well cover 14, a jacking bolt 15, an anchoring bolt 16, a positioning nut 17, a reinforcing nut 18, a gap 19, base layer concrete 20, middle layer concrete 21 and surface layer concrete 22.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1: the embodiment aims to provide a manhole cover construction method which is mainly used for manhole construction operation, is simple in the existing construction mode and is not tightly sealed in a shaft, and can ensure the installation quality of a road manhole seat and reduce material waste.
As shown in fig. 1 to 9, a manhole cover construction method includes a shaft 12, an annular well ring 13 provided at an upper portion of the shaft, an annular inner membrane 8, a manhole cover 14, and filling retardant soil, wherein the annular well ring 13 is located at an upper edge outer periphery of the shaft 12, the manhole cover 14 is located inside the well ring 13, the annular inner membrane 8 is used to close a gap 19 between the well ring and the manhole cover 14, the manhole cover is fixed by using anchor bolts, and the filling concrete fills the gap to stabilize the manhole cover.
The concrete construction steps comprise the following steps:
s1, the top surface of the prefabricated reinforced concrete shaft 12 is chiseled, concrete laitance and loose stones are removed, an annular groove-shaped well ring 13 is formed at the upper part of the shaft 12, the chiseling function is to firmly bond the construction surfaces of the two construction stages, and all chiseling and star point chiseling can be adopted.
In this embodiment, the artificial scabbling is adopted: the chiseling is slightly careful, the depth is controlled to be 10mm, the laitance and the soft layer on the surface of the concrete are completely removed, most of the coarse aggregate is exposed, the exposure of the aggregate reaches at least 70%, the construction difficulty is high, star point chiseling can be adopted as appropriate, the coarse aggregate is washed and kept wet, and after the laitance and the soft layer on the surface are removed, most of the coarse aggregate is exposed, so that a better connection surface is provided for the construction of filling concrete pouring.
S2, positioning and marking the positions of the well lid anchoring bolt 16 and the top bracing bolt 15 at the bottom of the well ring 13 by using a bolt positioning tool; in this embodiment, the bolt positioning tool includes a backup plate, a telescopic rod and a positioning hole; the backup plate is used for propping up the lateral wall at the pit shaft, and the telescopic link is fixed on the upper portion of backup plate, and the telescopic link can adopt the structure of loop bar, sleeve and jackscrew, is provided with the locating hole at the end fixing of telescopic link, through the well lid of different specifications, well lid and pit shaft adaptation utilize bolt positioning tool location position of punching.
S3, according to the positions of the anchor bolts and the top bracing bolts, drilling holes by using an electric hammer to form fixing holes, implanting the anchor bolts 16 and the top bracing bolts 15 on the top surface of the prefabricated reinforced concrete shaft, wherein the diameters of the top bracing bolts 15 and the anchor bolts 16 are 18-25mm, the anchor bolts 16 are used for fixing the well lid, the top bracing bolts 15 are used for supporting the well lid 14 to ensure the position of the well lid 14 to be horizontal, a gap 19 is formed between the well lid 14 and the bottom of the well ring 13, and the gap 19 is 1-5 cm.
When the anchor bolts 16 and the jack bolts 15 are constructed, the jack bolts 15 are installed first, the height of any two jack bolts 15 is detected by a liquid level meter, and then the anchor bolts are constructed.
S4, the well lid 14 is placed in the well ring 13, the placement height is determined by the top bracing bolt 15, the well lid 14 is in a horizontal position, the connecting hole of the well lid 14 corresponds to the anchoring bolt, and the end of the anchoring bolt 16 is additionally provided with the gasket and then fixed by the nut.
S5, lowering a lining template matched with the well lid, closing and compacting the gap by the lining template, then erecting the lining template, sprinkling water to wet the periphery of the shaft and washing impurities clean;
s6, firstly adding base layer concrete 20 into a gap between the well lid and the shaft, wherein the adding thickness of the base layer concrete 20 is matched with the gap and can be slightly higher, after the gap 19 is sealed, adding steel fibers into the middle area and the outer edge of the base concrete 20, and then adding middle layer concrete 21, wherein the steel fibers are doped in the middle layer concrete 21, and the doping amount of the steel fibers is 30kg-40kg/m 3; then adding surface layer concrete 22, ensuring the seal concrete to be matched with the upper edge standard sealing position of the well cover, and finally, vibrating and compacting by using a vibrator.
As shown in fig. 1-7, an adjustable template device for supporting in an inspection well comprises a hoisting structure and an adjusting structure; wherein hoisting structure is used for connecting external instrument, hoist and mount annular inner membrance 8 at the assigned height, with the contact clearance adaptation of annular inner membrance with well lid and pit shaft, make the annular inner membrance seal closely knit with the clearance between well lid and the pit shaft, avoid thick liquid to flow from this gap, adopt the connection structure of central piece as the center of hanging in the concrete structure, the lifting rope is installed to upper portion outer lane, the upper portion of lifting rope is connected on same rings, and keep rings center and the center of central piece of hanging to be in same vertical line, ensure that central piece of hanging is placed in the middle and stable, provide firm installation basis for adjusting the structure.
In a specific structure, as shown in fig. 2 and 4, the hoisting structure comprises a central hoisting block 1, a hoisting rope 2 and a hoisting ring 3; the lifting ropes 2 are uniformly distributed on the upper portion of the central lifting block 1, the upper portions of the lifting ropes 2 are fixed on the same lifting ring 3, the lifting ring 3 and the center of gravity of the central lifting block 1 are located at the same central point 10 on a projection plane, the central lifting block 1 is ensured to be centered and stable under natural lifting, specifically, four round steel bars with the lengths of 150mm-200mm and the diameters of 10mm-12mm are welded on the lower portion of the round steel bar, the lower portion of the round steel bar is welded with a stabilizing device, and the upper portion of the round steel bar is welded together with the round steel bar with the diameters of 8mm-10mm and processed into a circular ring with the diameters of 80mm-100 mm.
The adjusting structure is provided with a support rod capable of being adjusted in a telescopic mode, the support rod is fixed through threaded connection, the length of the support rod can be adjusted in a stepless mode through the threaded connection, and therefore the support rod is adaptive to shafts with different inner diameters; the inner end of the adjusting cylinder is fixed on the side surface of the central hanging block 1, the outer end of the adjusting cylinder is provided with an opening and is provided with internal threads, and the adjusting cylinder can be an internal thread solenoid with the diameter of 14mm-16mm and the length of 200mm-400 mm; the inner end of the adjusting rod 5 is provided with an external thread and is in threaded connection with the adjusting cylinder 4; the adjusting rod 5 can be a bolt with the length of 200mm-400mm and the diameter of 12mm-14mm, the outer end of the adjusting rod 5 is connected with a fixing wire 6 in a threaded mode, the fixing wire 6 is supported on the outer side of an annular inner membrane 8 in a propping mode, and the annular inner membrane is a steel plate with the thickness of 2 mm-3 mm and the height of 200mm-300 mm.
When adjusting, twist in adjusting a section of thick bamboo with adjusting pole one end, the other end is connected with the fixed wire of welding on the template. Through changing the length that the regulation pole got into and adjusts a section of thick bamboo, the internal diameter of adjustable inside lining survey board, adjusts a section of thick bamboo simultaneously and adjusts the firm in connection still can guarantee the rigidity of support system with adjusting the pole. The inner end of the adjusting cylinder is welded with the center hanging block, the center hanging block is welded with the hanging ring through round steel, and during construction, square wood or steel pipes are adopted for hanging, so that the supporting device is prevented from sinking. The use of this device has improved the installation quality of inspection shaft well lid, has avoided the quality hidden danger because of concrete placement does not in place brings, puts emphasis on the annular inner membrance 8 comparatively commonly used of reply, can adjust overall structure in advance, with the fixed welding on the lateral wall of annular inner membrance to do not change the use for a long time, this kind of structure need not tear the group open, and is comparatively convenient to the batched construction.
Therefore, the top bracing bolt can also form a gap between the bottom of the well lid and the bottom of the well ring, the lining template is blocked at the gap, when concrete is poured, firstly, a foundation is formed by utilizing the base layer concrete, the gap can be blocked by utilizing the base layer concrete, the outer wall of the gap after blocking is connected with the side walls of the shaft and the well lid, the surface of the outer wall is smooth, the whole block of the surface after construction is ensured to be continuous, and the later falling is avoided; then, adding middle-layer concrete on the upper part of the basic concrete, wherein the middle-layer concrete is internally provided with steel fibers, so that the overall stability of the middle-layer concrete is improved, and finally, constructing surface-layer concrete to ensure that the surface is matched with the pavement.
Example 2: this example is substantially the same as example 1, except that: the present embodiment further describes the structure of the center hanging block.
The central hanging block 1 is of a regular polygon structure, can be an M14-16 hexagon nut, is hollow inside, so that a plurality of mounting platforms 9 are formed on the outer side of the central hanging block, and the adjusting cylinder 4 is fixed on the mounting platforms 9; the adjusting cylinder 4 is in a fixed state and is fixed on a plane mounting platform of the central hanging block 1, a plurality of adjusting cylinders are distributed outwards in a circumferential divergence shape by taking the central hanging block 1 as a center, the adjusting cylinder 4 can be fixed in a welding mode, and at least the outer side of the adjusting cylinder is provided with internal threads.
This embodiment detachable turnover's strutting arrangement, the construction quality of inspection shaft well lid has been improved, road engineering quality hidden danger because of the well lid construction is avoided bringing, detachable turnover, repetitious usage, the waste of material has been reduced, and for regularization device, standardized device, can make the installation in advance, can accelerate the construction progress, the steady quality, pressure and safe and reliable that more can guarantee the support concrete, it is closely knit to guarantee concrete placement around the well seat, the well lid does not take place to subside, thereby more can ensure vehicle pedestrian's trip safety.
Example 3: this example is substantially the same as example 1, except that: in this embodiment, an arc-shaped top plate 7 is additionally arranged.
The tail end of the fixed wire 6 is fixedly provided with an arc-shaped top plate 7, the arc-shaped top plate 7 is matched with the inner diameter of the annular inner membrane 8, the adjusting rod 5 is fixedly sleeved with an adjusting nut 11, the fixed wire 6 is an internal thread cylinder, and the outer side of the arc-shaped top plate 7 is provided with a flexible friction pad 71.
To the annular inner membrance 8 that needs to be changed, can be fixed with arc roof 7 in the outside of fixed silk 6, arc roof 7 is changed according to the annular inner membrance of difference, and fixed silk 6 is an internal thread section of thick bamboo, and the screw direction is the same with the screw direction of adjusting a section of thick bamboo 4, because the arc roof is the arc structure, and artificial restriction top touches on the annular inner membrance, adjusting nut 8 on the pole is adjusted in the operation, make and adjust pole 5 and rotate, screw out and adjust a section of thick bamboo, and continue to screw in to the fixed silk, touch in the fixed silk inner until the top, continue to screw in, play the shoring effect, artificial restriction power removes this moment, screw up adjusting nut, further fasten adjusting nut 11 can.
Example 4: this example is substantially the same as example 1, except that: the present embodiment further explains the structure of the jack bolt and the anchor bolt.
In this embodiment, as shown in fig. 9, the top stay bolt 15 and the anchor bolt 16 have the same structure, and the middle portions of the two bolts are threadedly connected with the positioning nuts 17, and the positioning nuts 17 support the manhole cover 14 from the bottom and are fastened by the upper reinforcing nuts 18.
In this embodiment, after the positioning nut 17 is adjusted, the connecting hole of the well lid 14 is sleeved on the bolt in a matching manner, and is located on the positioning nut, and then the fastening and reinforcing nut 18 is fastened.
Claims (8)
1. A construction method of a manhole cover is characterized in that: the method comprises the following steps:
s1, firstly, roughening the top surface of the prefabricated reinforced concrete shaft, removing concrete laitance and loose stones, and forming an annular groove-shaped well ring at the upper part of the shaft;
s2, positioning and marking the positions of the well lid anchoring bolt and the top bracing bolt at the bottom of the well ring by using a bolt positioning tool;
s3, according to the positions marked by the anchor bolts and the top bracing bolts, implanting the anchor bolts and the top bracing bolts into the top surface of the prefabricated reinforced concrete shaft, wherein the anchor bolts are used for fixing the well lid, and the top bracing bolts are used for supporting the well lid, ensuring the position of the well lid to be horizontal, and enabling the well lid to have a gap with the bottom of the well ring;
s4, putting the well lid into the well ring, determining the placement height by using a top bracing bolt to enable the well lid to be in a horizontal position, corresponding a connecting hole of the well lid to an anchoring bolt, and fixing the well lid by using a nut after a gasket is additionally arranged at the end part of the anchoring bolt;
s5, lowering a lining template matched with the well lid, closing the gap by the lining template, tightly closing the gap, then erecting the lining template, sprinkling water to wet the periphery of the shaft and washing impurities clean;
s6, firstly adding base layer concrete into a gap between the well lid and the shaft, wherein the adding thickness of the base layer concrete is matched with the gap, after the gap is sealed, adding steel fibers into the middle area and the outer edge of the base concrete, then adding middle layer concrete, doping the steel fibers into the middle layer concrete, then adding surface layer concrete, ensuring the matching of the sealed concrete and the upper edge standard sealing position of the well lid, and finally vibrating and compacting by using a vibrator.
2. The inspection well lid construction method according to claim 1, wherein: the lining template comprises an annular inner membrane, a hoisting structure and an adjusting structure; the hoisting structure comprises a central hoisting block, a hoisting rope and a hoisting ring; lifting ropes are uniformly distributed on the upper part of the central lifting block, and the upper parts of the lifting ropes are fixed on the same lifting ring; the adjusting structure comprises an adjusting cylinder, an adjusting rod and a fixing wire; the inner end of the adjusting cylinder is fixed on the side surface of the central hanging block; the outer end opening is provided with the internal thread, the inner of adjusting the pole is provided with the external screw thread to threaded connection is in adjusting a section of thick bamboo, the outer end threaded connection of adjusting the pole has the fixed silk, the fixed silk shore is in the inner membraneous outside of annular, and the inner membraneous outside of annular is provided with the diaphragm layer.
3. The inspection well lid construction method according to claim 2, wherein: the central hanging block is of a regular polygon structure, the interior of the central hanging block is hollow, therefore, a plurality of mounting platforms are formed on the outer side of the central hanging block, and the adjusting cylinder is fixed on the mounting platforms.
4. The inspection well lid construction method according to claim 2, wherein: the fixed arc roof that is provided with of end of stationary filament, arc roof and the internal diameter adaptation that supports the inner membrance, the stationary filament is an internal thread section of thick bamboo, and the screw direction is the same with the screw direction of adjusting a section of thick bamboo.
5. The inspection well lid construction method according to claim 2, wherein: a flexible friction pad is arranged on the outer side of the arc-shaped top plate; and an adjusting nut is fixedly sleeved on the adjusting rod.
6. The inspection well lid construction method according to claim 1, wherein: the jacking bolts and the anchoring bolts are identical in structure, the middle parts of the two bolts are in threaded connection with positioning nuts, the positioning nuts support the well lid from the bottom, and the well lid is fastened by the reinforcing nuts on the upper parts.
7. The inspection well lid construction method according to claim 1, wherein: the doping amount of the steel fiber is 30kg-40kg/m 3; the gap is 1-5 cm; the diameter of the top bracing bolt and the diameter of the anchor bolt are 18-25 mm.
8. The inspection well lid construction method according to claim 1, wherein: when the anchor bolts and the top bracing bolts are constructed, the top bracing bolts are installed firstly, and the heights of any two top bracing bolts are detected by a liquid level meter; then anchor bolts are constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111123195.5A CN113833027A (en) | 2021-09-24 | 2021-09-24 | Construction method of manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111123195.5A CN113833027A (en) | 2021-09-24 | 2021-09-24 | Construction method of manhole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113833027A true CN113833027A (en) | 2021-12-24 |
Family
ID=78970138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111123195.5A Pending CN113833027A (en) | 2021-09-24 | 2021-09-24 | Construction method of manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113833027A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457851A (en) * | 2022-02-22 | 2022-05-10 | 王伟 | Adjustable well seat for municipal road |
| CN114751288A (en) * | 2022-06-14 | 2022-07-15 | 徐州鼎博混凝土制品有限公司 | Special lifting appliance for concrete prefabricated part |
| CN115370134A (en) * | 2022-09-03 | 2022-11-22 | 锦汇建设集团有限公司 | Fireproof plugging die for electromechanical pipeline |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2381037A1 (en) * | 2010-04-23 | 2011-10-26 | Buderus Kanalguss GmbH | Self-levelling shaft covering frame |
| KR101942215B1 (en) * | 2018-01-29 | 2019-01-24 | 김경호 | Manhole combinationing structure for fixing and opening and closing |
| CN209620110U (en) * | 2019-01-25 | 2019-11-12 | 张鸿杰 | A kind of prefabricated reinforced concrete inspection well well head |
| CN211690451U (en) * | 2020-01-14 | 2020-10-16 | 中交一航局第三工程有限公司 | Inner formwork device for well lid grouting installation method |
| CN211735685U (en) * | 2019-09-24 | 2020-10-23 | 中国一冶集团有限公司 | Concrete road surface rain sewage well lid mounting structure |
| CN112376619A (en) * | 2020-11-30 | 2021-02-19 | 北京城建五建设集团有限公司 | Integrated structure of prefabricated well ring and well cover of asphalt concrete pavement and construction method thereof |
-
2021
- 2021-09-24 CN CN202111123195.5A patent/CN113833027A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2381037A1 (en) * | 2010-04-23 | 2011-10-26 | Buderus Kanalguss GmbH | Self-levelling shaft covering frame |
| KR101942215B1 (en) * | 2018-01-29 | 2019-01-24 | 김경호 | Manhole combinationing structure for fixing and opening and closing |
| CN209620110U (en) * | 2019-01-25 | 2019-11-12 | 张鸿杰 | A kind of prefabricated reinforced concrete inspection well well head |
| CN211735685U (en) * | 2019-09-24 | 2020-10-23 | 中国一冶集团有限公司 | Concrete road surface rain sewage well lid mounting structure |
| CN211690451U (en) * | 2020-01-14 | 2020-10-16 | 中交一航局第三工程有限公司 | Inner formwork device for well lid grouting installation method |
| CN112376619A (en) * | 2020-11-30 | 2021-02-19 | 北京城建五建设集团有限公司 | Integrated structure of prefabricated well ring and well cover of asphalt concrete pavement and construction method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457851A (en) * | 2022-02-22 | 2022-05-10 | 王伟 | Adjustable well seat for municipal road |
| CN114751288A (en) * | 2022-06-14 | 2022-07-15 | 徐州鼎博混凝土制品有限公司 | Special lifting appliance for concrete prefabricated part |
| CN115370134A (en) * | 2022-09-03 | 2022-11-22 | 锦汇建设集团有限公司 | Fireproof plugging die for electromechanical pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113833027A (en) | Construction method of manhole cover | |
| US11365523B2 (en) | Methods for constructing tensionless concrete pier foundations and foundations constructed thereby | |
| CN105804089A (en) | Locally-deepened supporting and protecting system used after original deep foundation pit is constructed and construction method of system | |
| CN107044142B (en) | Adjustable reinforcement deviation correcting method and structure for reducing uneven settlement of house | |
| CN111851513A (en) | Construction method of self-sinking type deep foundation pit retaining wall structure and underground space structure | |
| CN109537579B (en) | Construction method of cast-in-situ bored pile | |
| CN105133575A (en) | Suspended formwork supporting device for casting lining on surface of underground continuous wall and construction method | |
| CN109989406B (en) | Foundation pit support replacing construction method | |
| CN113502828B (en) | Processing method for early warning of deep foundation pit | |
| CN101550693B (en) | Method for reinforcing base with bored pile in the underground structure of high groundwater level | |
| CN108930224A (en) | Punching stick method bent cap supports regulating system construction method | |
| CN108222054A (en) | Tower-crane foundation structure and its construction method | |
| CN218322863U (en) | Well body reinforcing system for inspection well | |
| CN112227369B (en) | Cover-excavation top-down construction permanent steel pipe stand column installation construction method | |
| CN102535496A (en) | Expanded pier structure and forming method thereof | |
| CN211547797U (en) | Tower crane foundation structure suitable for basement raft foundation | |
| CN211498929U (en) | Street lamp basis prefabricated construction | |
| CN209799529U (en) | communication tower prefabricated base convenient for wiring | |
| CN210049264U (en) | Assembled foundation | |
| CN216973494U (en) | Adjustable template device that supports in inspection shaft | |
| CN111851506A (en) | Construction method of self-sinking type deep foundation pit retaining wall structure and underground space structure | |
| CN213390438U (en) | Construction device for horsewell | |
| CN213539495U (en) | Inclined anti-skid concrete cushion block | |
| CN219430744U (en) | Construction device for high-water-content soft soil bored pile | |
| CN211849492U (en) | Corrugated steel pipe construction supporting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211224 |
|
| RJ01 | Rejection of invention patent application after publication |