CN107023061B - Assembled plastic municipal drainage inspection well and construction method - Google Patents
Assembled plastic municipal drainage inspection well and construction method Download PDFInfo
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- CN107023061B CN107023061B CN201710259929.XA CN201710259929A CN107023061B CN 107023061 B CN107023061 B CN 107023061B CN 201710259929 A CN201710259929 A CN 201710259929A CN 107023061 B CN107023061 B CN 107023061B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
- E03F5/024—Manhole shafts or other inspection chambers; Snow-filling openings; accessories made of plastic material
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
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Abstract
The invention relates to an assembled plastic municipal drainage inspection well and a construction method, and belongs to the field of drainage engineering. The structural size of the inspection well of the existing standard diagram is taken as the basis, and the standard flow groove, workbench and well descending maintenance requirements are met. The plastic-concrete composite structure mainly comprises a foundation, a flow groove, a well chamber, a cover plate, a shaft and a well cover, wherein the flow groove, the well chamber and the shaft are made of plastic components, the flow groove, the well chamber and the shaft are combined on site to form a reinforced concrete frame outside a plastic well body as a bearing component, ground load and soil pressure around the well are borne by reinforced concrete to form a plastic and reinforced concrete composite structure, the plastic-concrete composite structure has good plastic tightness, and the reinforced concrete has strong bearing capacity. When the frame concrete is poured, the plastic well body is used as a template, formwork supporting and formwork removing are not needed, and the material and labor for formwork supporting and formwork removing are saved. The complex procedures of bricking of municipal drainage inspection wells or concrete pouring by supporting a formwork in the prior art are omitted, the construction speed is high, and the quality is easy to control.
Description
Technical Field
The invention relates to an assembled plastic municipal drainage inspection well and a construction method, belongs to the field of drainage engineering, and particularly relates to a plastic drainage inspection well applied to municipal roads.
Background
Urban drainage is divided into rainwater and sewage, drainage system is divided into two types, namely split system and combined system, and most cities adopt split system, namely rainwater and sewage are respectively discharged. Units or residential areas along urban roads are generally drained organically, rainwater and sewage are collected and drained to drainage pipelines under the urban roads, and the drainage pipelines are commonly called municipal drainage pipelines. And the rainwater and the sewage are discharged to a water body or a sewage treatment plant through a municipal drainage pipeline. Inspection wells are required to be arranged at the positions of municipal drainage pipelines at regular intervals, where the pipelines turn and branch pipes are connected. Municipal administration drain pipe's characteristics are that the pipe diameter is great, and the inspection shaft that uses is also great. The design specification for outdoor drainage GB50014-2006 stipulates the height of a well chamber of the inspection well, the arrangement of the launder and the radius of the launder of the inspection well at a turning position. When the drainage pipeline is designed, designers adopt a national standard drawing of drainage inspection well 02S515 or municipal drainage pipeline engineering and accessory facilities 06MS201, and the latter is a revised edition of the former. Municipal drainage inspection shaft divide into circular, rectangle, fan-shaped etc. according to the difference of pipe diameter. The diameter of the round inspection well is 700mm, 1000mm, 1250 mm and 1500mm, the inspection well is suitable for pipelines with the pipe diameter less than or equal to 1000mm, the inspection well with the pipe diameter larger than that of the round inspection well is rectangular, and the inspection well at the turning part with the large pipe diameter is fan-shaped. Be provided with the chute in the drainage inspection shaft for reduce the turbulent flow and improve flow, still be provided with the workstation, the maintenance of going into the well of the easy access personnel, well chamber height also has the requirement, guarantees that the operation has sufficient space in the pit.
The plastic drainage inspection well in the prior art is small and can only be suitable for drainage pipelines in residential districts and enterprises and public institutions. The technical code for plastic drainage inspection well application CJJ209T-2013 stipulates that the code is applicable to a drainage inspection well with the well diameter of not more than 1000mm and the burial depth of not more than 6m in a newly-built, expanded and reconstructed buried drainage system; the plastic drainage inspection well 08SS523 in the building community is clear and suitable for a plastic drainage inspection well which has the advantages that the outer diameter of a buried plastic drainage pipeline in the range of the building community (a residential area, a public building area, a factory area and the like) is not more than 800mm, the buried depth is not more than 6m and the operation of going down the well is not performed. According to the construction requirements of municipal drainage inspection wells, the plastic inspection wells of the prior art cannot be used in municipal drainage pipe work. In the prior art, the municipal drainage plastic inspection well patent numbers CN201520385429.7 and the large plastic inspection well patent number CN201210519421.6 adopt reinforcing ribs to improve the strength of the inspection well, and although a ladder stand is also arranged for people to go down the well for maintenance, the necessary structures of a launder and a workbench are lacked, so that a designer can not adopt the inspection well because the inspection well does not meet the standard requirements. Municipal drainage pipe diameter is great, and corresponding inspection shaft size is also great. For example, the four-way inspection well with the outlet pipe diameter of 1500mm has a well chamber with the length of 3.3m and the width of 2.48m, and is used for a rainwater pipe well chamber with the height of 1.8m and used for a sewage pipe well chamber with the height of 3.3 m. Such large manhole is difficult to satisfy strength requirements with only plastic reinforcing ribs. Most of municipal inspection wells are arranged under roads and are subjected to the action of vehicle loads, so that the requirement on the strength of the inspection wells is higher. The problem of restricting the application of the plastic drainage inspection well in municipal drainage pipelines is also solved.
The existing standard diagram inspection well has two structural forms of brick laying and concrete pouring. In actual engineering, most of the bricks are built by adopting brick structures, and compared with concrete structures, the bricks have the advantages of simple and convenient construction, short construction period and the like. However, the building requirement of the brick drainage inspection well is very high, the mortar of the building joints is full, and the plastering of the waterproof mortar in the well is dense. And carrying out a water closing test before the drainage pipeline is backfilled, and testing the sealing performance of the pipeline. The water shut-off test requires a well test, i.e. a water shut-off test of the pipe together with the inspection well. In actual construction, the hidden quality troubles that the masonry brick joints of the inspection well are not tight, particularly the pipelines and the inspection well are difficult to masonry, the plastering in the well is not compact and the like often exist. The plastering height in the rainwater inspection well of the standard diagram is 200mm from the top of the pipe, the plastering height in the sewage inspection well reaches the top of a well chamber, the water level of a water closing test is 2m above the top of the inner top of the inspection well pipe at the most upstream of a test section, the phenomenon that the water level is higher than the plastering height can exist, the inspection well is easy to leak water (particularly, the base slurry of a cover plate and a well body is a main part for leaking water), the requirement of the water closing test caused by the water leakage cannot be met, and the plastering height needs to be remounted or even the inspection well needs to be removed for. The inspection well cast in situ with concrete is not compacted and water leakage can occur. Therefore, when the standard drawing is generally applied, a designer needs to smear the interior and the exterior of the rainwater inspection well to the wellhead and smear the interior and the exterior of the sewage inspection well to the wellhead. The brick and concrete inspection well has high technological requirements, high construction difficulty, large influence of the technical level of personnel on site construction, uneven construction quality, long construction period and inferior sealing performance to a plastic inspection well.
Disclosure of Invention
The purpose of the invention is: the assembled plastic municipal drainage inspection well meets the standard requirements of launder, workbench and well descending maintenance based on the structural size of the inspection well with the current standard diagram. The plastic-concrete composite structure mainly comprises a foundation, a flow groove, a well chamber, a cover plate, a shaft and a well cover, wherein the flow groove, the well chamber and the shaft are formed by combining components made of plastics on site, a reinforced concrete frame is arranged around a plastic well body to serve as a bearing structure, ground load and soil pressure around the well are borne by the reinforced concrete to form a plastic and reinforced concrete composite structure, and the plastic-concrete composite structure has good plastic tightness and strong bearing capacity of the reinforced concrete. The frame concrete pouring utilizes the plastic well body as a template, and does not need to support and remove the template, thereby saving the material and labor for supporting and removing the template. The beneficial effects are that: the defects that the existing plastic inspection well is small, does not have a flow groove and a well chamber, can not be maintained when going into a well, has low plastic strength and is not suitable for manufacturing a large-size municipal inspection well are overcome, and the defects that the brick or concrete inspection well in the prior art is poor in tightness, water leakage is easy to occur, the construction process is complex and the construction period is long are overcome.
The invention is realized by the following technologies: assembled plastics municipal drainage inspection shaft mainly comprises chute section 1, well room section 2, apron section 3, shaft section 4, well head section 5, well lid 6, basis 7. The launder section 1, the well chamber section 2, the cover plate section 3, the well barrel section 4 and the well mouth section 5 are components made of plastics, and the components are connected and assembled in a socket joint mode to form a well body of the inspection well. The inspection well adopts the field assembly of plastic components to combine the construction of cast-in-place concrete, and is from bottom to top: basis 7, chute section 1, well room section 2, apron section 3, shaft section 4, well head section 5, well lid 6. The periphery of runner section 1 is equipped with runner post 17, is equipped with runner post reinforcing bar 18 in the runner post 17, and the lower extreme anchor of runner post reinforcing bar 18 is in the concrete of basis 7. The periphery of the well chamber section 2 is provided with a well chamber column 23, a well chamber column reinforcing steel bar 24 is arranged in the well chamber column 23, the launder column 17 and the well chamber column 23 are positioned on the same plane and are communicated up and down, the launder column reinforcing steel bar 18 and the well chamber column reinforcing steel bar 24 are connected in a penetrating manner up and down, and the upper end of the well chamber column reinforcing steel bar 24 extends into the concrete of the cover plate 31. The apron section 3 is installed on the upper portion of well room section 2, the upper portion of apron section 3 is wellbore section 4, the periphery of wellbore section 4 is equipped with wellbore column 43, be equipped with wellbore column reinforcing bar 44 in the wellbore column 43, the lower extreme anchor of wellbore column reinforcing bar 44 is in the concrete of apron 31, the upper end of wellbore section column reinforcing bar 44 stretches into in the cushion cap 51, cushion cap 51 is located a week of wellhead section 5, be equipped with cushion cap reinforcing bar 52 in the cushion cap 51, well lid 6 is installed on cushion cap 51, constitute a waterproof well body that is formed by the assembly of plastic component, reinforced concrete is the plastic-concrete structure inspection shaft of frame bearing structure.
The launder section 1 comprises a launder inner wall 11 and a launder outer frame 12 to form a water passing part of an inspection well, an inlet pipe 13 and an outlet pipe 14 are arranged, a launder 15 is arranged between the inlet pipe 13 and the outlet pipe 14, two sides of the launder 15 are provided with a workbench 16, the space enclosed by the launder inner wall 11 and the launder outer frame 12 is used for arranging a launder column 17, the lower parts of the launder 15 and the workbench 16 are filled with concrete to fill a shaft bottom 19, and the shaft bottom 19 is connected with the concrete of the launder column 17 into a whole. The well chamber section 2 is composed of a well chamber inner wall 21 and a well chamber outer frame 22 to form an operation space for maintenance of the inspection well, and the space enclosed by the well chamber inner wall 21 and the well chamber outer frame 22 is used for arranging a well chamber column 23. The cover plate section 3 is a template for pouring the cover plate 31 and consists of a shaft connector 32 and a cover plate outer frame 33, cover plate reinforcing steel bars 34 are arranged in the cover plate section 3, the cover plate 31 is poured by adopting concrete, well chamber column reinforcing steel bars 24 extend into the cover plate 31, and the cover plate 31 is supported on the well chamber column 23. The shaft section 4 is composed of a shaft inner wall 41 and a shaft outer frame 42 to form a channel for pipeline dredging and downhole maintenance, the space enclosed by the shaft inner wall 41 and the shaft outer frame 42 is used for arranging a shaft column 43, and the shaft column 43 is supported on the cover plate 31. The wellhead section 5 is a circular ring with the same diameter as the inner wall 41 of the shaft, is arranged at the upper part of the shaft section 4 and is used as an inner mold for pouring a bearing platform 51.
Be equipped with cat ladder 8 in launder section 1, well room section 2, apron section 3, wellhole section 4, the well head section 5, establish reinforcing bar outsourcing plastics in the cat ladder 8, the position that each section set up is unanimous from top to bottom, and the reinforcing bar anchor of cat ladder 8 is in the concrete of corresponding section stand.
A construction method of an assembly type plastic municipal drainage inspection well comprises the following steps of constructing a foundation 7, a launder section 1, a well chamber section 2, a cover plate section 3, a well barrel section 4, a well mouth section 5 and a well lid 6 by combining segmented assembly from bottom to top with cast-in-place concrete.
a. Manufacturing binding runner column reinforcing steel bars 18, well chamber column reinforcing steel bars 24, cover plate reinforcing steel bars 34, well cylinder column reinforcing steel bars 44 and bearing platform reinforcing steel bars 52, wherein two methods are adopted for manufacturing the runner column reinforcing steel bars 18 and the well chamber column reinforcing steel bars 24, one method is that lap joint parts with the well chamber column reinforcing steel bars 24 are reserved on the runner column reinforcing steel bars 18, and the runner column reinforcing steel bars and the well chamber column reinforcing steel bars are welded during segmented construction; the other is that the launder column reinforcement 18 and the pit column reinforcement 24 are integrated from the foundation 7 through to the cover plate 31.
b. And (3) pouring the foundation 7 on the excavated inspection well foundation, and embedding the tied runner column reinforcing steel bars 18 in the concrete of the foundation 7.
c. After concrete of a foundation 7 is finally set, a runner section 1 is installed on the concrete, runner column reinforcing steel bars 18 are sleeved in a space enclosed by a runner inner wall 11 and a runner outer frame 12, positions and elevations of an inlet pipe 13 and an outlet pipe 14 are adjusted, the runner section 1 is fixed, a gap between the bottom and the foundation 7 is sealed by mortar, a runner column 17 is poured, the concrete is vibrated by a vibrating rod, the concrete flows into the lower parts of a runner 15 and a workbench 16, air is exhausted from an exhaust hole in the top surface of the workbench 16 to enable the concrete to be tightly filled, a well bottom 19 is formed, and the concrete of the runner column 17 is combined into a whole.
d. After the concrete of the launder column 17 is finally set, the well chamber section 2 is installed on the upper portion of the launder section 1, the well chamber column reinforcing steel bars 24 are sleeved in the space enclosed by the well chamber inner wall 21 and the well chamber outer frame 22, sealing glue is smeared on the bell and spigot at the joint of the launder section 1 and the well chamber section 2, the well chamber section 2 is inserted into the bell mouth of the launder section 1, and the well chamber column 23 is poured.
e. After the concrete of the well chamber column 23 is finally set, the cover plate section 3 is installed on the upper portion of the well chamber section 2, a sealing glue is smeared on a socket at the joint of the well chamber section 2 and the cover plate section 3, the cover plate section 3 is inserted into a bell mouth of the well chamber section 2, the cover plate reinforcing steel bars 34 are placed and firmly bound with the well chamber column reinforcing steel bars 24 extending into the cover plate 31, the installation well cylinder column reinforcing steel bars 44 are embedded in the cover plate 31, and the cover plate 31 is poured.
f. After the concrete of the cover plate 31 is finally set, the shaft section 4 is installed on the upper part of the shaft interface 32 of the cover plate section 3, the shaft column reinforcing steel bars 44 are sleeved in the space enclosed by the shaft inner wall 41 and the shaft outer frame 42, sealing glue is coated on the bell and spigot at the connection part of the shaft section 4 and the shaft interface 32, the shaft section 4 is inserted into the socket of the shaft interface 32 of the cover plate section 3, and the shaft column 43 is poured.
g. After the strength of the concrete of the well barrel column 43 is reached, earth is backfilled and tamped at the periphery of the inspection well, when the concrete is filled to the top of the well barrel section 4, the wellhead section 5 is installed at the upper part of the well barrel section 4, a sealing glue is smeared at a bell and spigot joint at the joint of the wellhead section 5 and the well barrel section 4, the wellhead section 5 is inserted into a socket of the well barrel section 4, a bearing platform reinforcing steel bar 52 is placed and firmly bound with a well barrel column reinforcing steel bar 44 extending into a bearing platform 51, and the concrete of the bearing platform 51 is poured.
h. After the concrete of the bearing platform 51 is finally set, the manhole cover 6 is fixed on the concrete, and a road surface around the inspection well is paved.
The invention relates to a plastic well body component manufactured in a factory, which is assembled and combined on site and combined with a plastic-concrete structure inspection well formed by pouring a reinforced concrete frame. When the frame concrete is poured, the plastic well body is used as a template, formwork supporting and formwork removing are not needed, and the material and labor for formwork supporting and formwork removing are saved. The complex procedures of bricking of municipal drainage inspection wells or concrete pouring by supporting a formwork in the prior art are omitted, the construction speed is high, and the quality is easy to control.
Drawings
FIG. 1 is a longitudinal vertical sectional view of a pipe of the present invention;
FIG. 2 is a transverse sectional elevation of the conduit of the present invention;
FIG. 3 is a cross-sectional view of a reinforced concrete frame according to the present invention (section F-F of FIG. 7);
FIG. 4 is a sectional plan view of the launder segment (section A-A of FIG. 1);
FIG. 5 is a plan sectional view of a well bore section (section B-B of FIG. 1);
FIG. 6 is a cover plate segment in plan section (section C-C of FIG. 1);
FIG. 7 is a plan sectional view of a wellbore section (section D-D of FIG. 1);
FIG. 8 is a sectional plan view of the wellhead section (section E-E of FIG. 1).
In the figure: 1-runner section, 2-well chamber section, 3-cover plate section, 4-well barrel section, 5-well mouth section, 6-well cover, 7-foundation, 8-ladder stand, 11-runner inner wall, 12-runner outer frame, 13-inlet pipe, 14-outlet pipe, 15-runner, 16-workbench, 17-runner column, 18-runner column reinforcing steel bar, 19-well bottom, 21-well chamber inner wall, 22-well chamber outer frame, 23-well chamber column, 24-well chamber column reinforcing steel bar, 31-cover plate, 32-well barrel interface, 33-cover plate outer frame, 34-cover plate reinforcing steel bar, 41-well bore inner wall, 42-well barrel outer frame, 43-well barrel column, 44-well barrel column reinforcing steel bar, 51-bearing platform and 52-bearing platform reinforcing steel bar.
Detailed Description
The invention relates to a well body consisting of plastic components, which is assembled and combined on site, wherein a reinforced concrete frame is arranged around the well body to serve as a bearing plastic-concrete structure inspection well. Assembled plastics municipal drainage inspection shaft mainly comprises chute section 1, well room section 2, apron section 3, shaft section 4, well head section 5, well lid 6, basis 7. The longitudinal vertical section of the pipeline of the invention is shown in figure 1, which is a section along the longitudinal vertical surface of the central pipeline of the inspection well; the transverse elevation section of the pipeline is shown in figure 2, which is a section along the transverse elevation of the central pipeline of the inspection well. As can be seen from fig. 1 and 2, the following components are sequentially arranged from bottom to top: basis 7, chute section 1, well room section 2, apron section 3, shaft section 4, well head section 5, well lid 6. The runner section 1, the well chamber section 2, the cover plate section 3, the well barrel section 4 and the well mouth section 5 are components made of plastics, and the components are connected and assembled in a socket joint mode to form a well body of the inspection well. The inspection well adopts the field assembly of plastic components and the construction of cast-in-place concrete. Fig. 1 and 2 show the assembly relationship of plastic components of the inspection well, fig. 3 is an elevated section view of the reinforced concrete frame of the invention, which is a vertical section along the edge position of the inspection well near the well barrel section 4, and is a section F-F of fig. 7, and which shows the reinforced concrete frame structure of the inspection well, and the sections are cut to the positions of the foundation 7, the launder column 17, the well chamber column 23, the cover plate 31, the well barrel column 43 and the bearing platform 51.
Example (b): the structure and connection relationship of each part will be described by taking a round drainage inspection well as an example.
The runner section 1 comprises a water passing part of the inspection well consisting of a runner inner wall 11 and a runner outer frame 12, an inlet pipe 13 and an outlet pipe 14 are arranged, a runner 15 is arranged between the inlet pipe 13 and the outlet pipe 14, and two sides of the runner 15 are provided with a workbench 16. The space enclosed by the launder inner wall 11 and launder outer frame 12 is used for arranging launder columns 17. The planar shape of the inner wall 11 of the launder is circular, the planar shape of the outer frame 12 of the launder is square, the square is externally tangent to the circular shape, the side length of the square is equal to the diameter of the circular shape, and a triangle with a bevel edge being a circular arc is formed between the four corners of the square and the circular shape, namely the space enclosed by the inner wall 11 of the launder and the outer frame 12 of the launder. The periphery of the runner section 1 is provided with a runner column 17, the section of the runner column 17 is a bevel edge circular triangle, runner column reinforcing steel bars 18 are arranged in the runner column 17, and the plan section of the runner section 1 is shown in figure 4 which is a section A-A of figure 1. If one side or two sides of the inspection well are connected with the branch pipes, the flow grooves 15 are correspondingly communicated, and the dotted line nozzles in the figures 1, 2 and 4 are shown as one side of the branch pipes. The lower ends of the runner column reinforcing bars 18 are anchored in the concrete of the foundation 7, and the lower parts of the runner 15 and the workbench 16 are filled with concrete at the bottom of the well 19 and are connected with the concrete of the runner column 17 into a whole, as shown in fig. 1, 2 and 3.
The well chamber section 2 is arranged at the upper part of the launder section 1, the well chamber section 2 consists of a well chamber inner wall 21 and a well chamber outer frame 22 to form a well chamber for inspection well maintenance, the plane shape and the size of the well chamber section 2 are the same as those of the launder section 1, and the well chamber section is also square and circumscribed round, except that the inlet pipe 13, the outlet pipe 14, the launder 15 and the workbench 16 are not arranged. The space enclosed by the well chamber inner wall 21 and the well chamber outer frame 22 is used for arranging a well chamber column 23. The periphery of the well chamber section 2 is provided with a well chamber column 23, the section of the well chamber column 23 is also a bevel edge circular triangle, a well chamber column reinforcing steel bar 24 is arranged in the well chamber column 23, and the plan section of the well chamber section 2 is shown in figure 5 which is a section B-B of figure 1. The cross section of the launder column 17 is the same as that of the well chamber column 23, the launder column 17 and the well chamber column 23 are arranged at the same plane positions of four corners and are communicated up and down, the launder column steel bars 18 and the well chamber column steel bars 24 are connected up and down in a penetrating manner, and the upper ends of the well chamber column steel bars 24 extend into concrete of the cover plate 31, as shown in fig. 3.
The cover plate section 3 is mounted on top of the well section 2, the cover plate section 3 being the transfer part of the well section 2 and the wellbore section 4, also the ground load bearing member. The cover plate section 3 is composed of a shaft interface 32 and a cover plate outer frame 33 to form a template for pouring the cover plate 31. The plane shape of the cover plate outer frame 33 is square without inscribed circle, but a socket with the same diameter as the well chamber inner wall 21 is arranged at the joint of the lower part of the cover plate section 3 and the well chamber inner wall 21 of the well chamber section 2 and is inserted into the socket of the well chamber inner wall 21. A shaft interface 32 is arranged at one corner of the square cover plate section 3, the shaft interface 32 is circular, the diameter of the shaft interface 32 is smaller than that of the well chamber inner wall 21, a partial arc of the shaft interface 32, which is deviated to one corner, is internally tangent to the well chamber inner wall 21 at the lower part to form a channel of the well cylinder section 4 to the well chamber section 2, and the internally tangent arc edges are parallel and level up and down, so that maintenance personnel can conveniently go into the well. The positions of the bevel edge circular triangles at the four corners of the cover plate section 3, which correspond to the well chamber column 23, are not provided with bottoms and are communicated with the well chamber column 23, and the well chamber column steel bars 24 can extend into the cover plate section 3. The part of the cover plate section 3 corresponding to the lower circular well chamber inner wall 21 has no bottom except for the shaft interface 32, and the rest part has a bottom, so that a bottom mould for pouring the cover plate 31 concrete is formed. Cover plate reinforcing bars 34 are arranged in the cover plate section 3, the cover plate 31 is cast with concrete, and the cover plate section 3 is shown in a plan sectional view in fig. 6, which is a section C-C in fig. 1. The well string reinforcements 24 extend into the cover plate 31, and the cover plate 31 is supported on the well string 23, see fig. 3.
The upper part of the cover plate section 3 is a shaft section 4, the shaft section 4 is a channel for pipeline dredging and well descending maintenance, which is composed of a shaft inner wall 41 and a shaft outer frame 42, and the space enclosed by the shaft inner wall 41 and the shaft outer frame 42 is used for arranging a shaft column 43. The plane shape of the shaft inner wall 41 is circular, the plane shape of the shaft outer frame 42 is square, the square is circumscribed and circular, the side length of the square is equal to the diameter of the circle, and a triangle with a circular arc bevel edge is formed between the four corners of the square and the circle, namely a space enclosed by the shaft inner wall 41 and the shaft outer frame 42. The periphery of the well cylinder section 4 is provided with a well cylinder column 43, the well cylinder column 43 is internally provided with well cylinder column reinforcing steel bars 44, the well cylinder section 4 is shown in a plan sectional view of figure 7 which is a D-D section of figure 1, and the dotted line part is the lower cover plate section 3. The wellbore column 43 is supported on the cover plate 31, the lower ends of the wellbore column reinforcements 44 are anchored in the concrete of the cover plate 31, and the upper ends of the wellbore section column reinforcements 44 extend into the bearing platform 51, see fig. 3.
The wellhead section 5 is a circular ring with the same diameter as the inner wall 41 of the well bore, is arranged on the upper part of the well bore section 4 and is used as an inner die for pouring a bearing platform 51, and the plan section view of the wellhead section 5 is shown in figure 8 which is a section E-E of figure 1. The bearing platform 51 is located on the periphery of the wellhead section 5, bearing platform reinforcing steel bars 52 are arranged in the bearing platform 51, the bearing platform 51 is cast by concrete, and the manhole cover 6 is installed on the bearing platform 51, and is shown in fig. 3.
The above is the round manhole embodiment, rectangular and fan shape manhole, the four corners of the runner section 1 and the well chamber section 2 are provided with tuck corners to form triangular spaces for arranging the runner column 17 and the well chamber column 23. If the plane size of the inspection well is large, the bearing requirements cannot be met only by four corner columns, and the upright columns can be added in the middle through calculation.
The runner section 1, the well chamber section 2, the cover plate section 3, the well barrel section 4 and the well head section 5 are components made of plastics and are formed by injection molding in a factory. The launder section 1 is a separate piece. The well chamber sections 2 are made into various specifications with different heights and can be combined into well chambers with different heights. The height of the cover plate section 3 is the thickness of the cover plate 31 and is determined by calculation of the reinforced concrete structure. The size and the shape of the runner section 1, the well chamber section 2 and the cover plate section 3 are determined according to the pipe diameter, the shape is divided into a circle, a rectangle and a sector, and the size of the inspection well is determined according to the pipe diameter, whether a branch pipe is connected or not, whether the branch pipe is turned or not and the like. The shaft sections 4 are manufactured into various specifications with different heights so as to adapt to the combination of shafts with different heights, and the shaft sections 4 are uniformly in one specification regardless of the specification of the inspection well, preferably the inner diameter of the shaft inner wall 41 is 700 mm. The wellhead section 5 is an independent component, the diameter of the wellhead section is the same as that of the inner wall 41 of the well barrel, the wellhead section is a through-long circular pipe, the through-long circular pipe can be cut according to the height, and the height is determined according to the thickness of the bearing platform 51 and is about 200mm generally.
The construction of the assembled plastic municipal drainage inspection well adopts a method of combining plastic components with cast-in-place concrete construction in a field assembly mode, and the foundation 7, the launder section 1, the well chamber section 2, the cover plate section 3, the well barrel section 4, the well head section 5 and the well cover 6 are combined with cast-in-place concrete construction in a segmented assembly mode from bottom to top, and the construction method is as follows.
a. Manufacturing binding runner column reinforcing steel bars 18, well chamber column reinforcing steel bars 24, cover plate reinforcing steel bars 34, well cylinder column reinforcing steel bars 44 and bearing platform reinforcing steel bars 52, wherein two methods are adopted for manufacturing the runner column reinforcing steel bars 18 and the well chamber column reinforcing steel bars 24, one method is that lap joint parts with the well chamber column reinforcing steel bars 24 are reserved on the runner column reinforcing steel bars 18, and the runner column reinforcing steel bars and the well chamber column reinforcing steel bars are welded during segmented construction; the other is that the launder column reinforcement 18 and the pit column reinforcement 24 are integrated from the foundation 7 through to the cover plate 31.
b. And (3) pouring the foundation 7 on the excavated inspection well foundation, and embedding the tied runner column reinforcing steel bars 18 in the concrete of the foundation 7.
c. After concrete of a foundation 7 is finally set, a runner section 1 is installed on the concrete, runner column reinforcing steel bars 18 are sleeved in a space enclosed by a runner inner wall 11 and a runner outer frame 12, positions and elevations of an inlet pipe 13 and an outlet pipe 14 are adjusted, the runner section 1 is fixed, a gap between the bottom and the foundation 7 is sealed by mortar, a runner column 17 is poured, the concrete is vibrated by a vibrating rod, the concrete flows into the lower parts of a runner 15 and a workbench 16, air is exhausted from an exhaust hole in the top surface of the workbench 16 to enable the concrete to be tightly filled, a well bottom 19 is formed, and the concrete of the runner column 17 is combined into a whole.
d. After the concrete of the launder column 17 is finally set, the well chamber section 2 is installed on the upper portion of the launder section 1, the well chamber column reinforcing steel bars 24 are sleeved in the space enclosed by the well chamber inner wall 21 and the well chamber outer frame 22, sealing glue is smeared on the bell and spigot at the joint of the launder section 1 and the well chamber section 2, the well chamber section 2 is inserted into the bell mouth of the launder section 1, and the well chamber column 23 is poured.
e. After the concrete of the well chamber column 23 is finally set, the cover plate section 3 is installed on the upper portion of the well chamber section 2, a sealing glue is smeared on a socket at the joint of the well chamber section 2 and the cover plate section 3, the cover plate section 3 is inserted into a bell mouth of the well chamber section 2, the cover plate reinforcing steel bars 34 are placed and firmly bound with the well chamber column reinforcing steel bars 24 extending into the cover plate 31, the installation well cylinder column reinforcing steel bars 44 are embedded in the cover plate 31, and the cover plate 31 is poured.
f. After the concrete of the cover plate 31 is finally set, the shaft section 4 is installed on the upper part of the shaft interface 32 of the cover plate section 3, the shaft column reinforcing steel bars 44 are sleeved in the space enclosed by the shaft inner wall 41 and the shaft outer frame 42, sealing glue is coated on the bell and spigot at the connection part of the shaft section 4 and the shaft interface 32, the shaft section 4 is inserted into the socket of the shaft interface 32 of the cover plate section 3, and the shaft column 43 is poured.
g. After the strength of the concrete of the well barrel column 43 is reached, earth is backfilled and tamped at the periphery of the inspection well, when the concrete is filled to the top of the well barrel section 4, the wellhead section 5 is installed at the upper part of the well barrel section 4, a sealing glue is smeared at a bell and spigot joint at the joint of the wellhead section 5 and the well barrel section 4, the wellhead section 5 is inserted into a socket of the well barrel section 4, a bearing platform reinforcing steel bar 52 is placed and firmly bound with a well barrel column reinforcing steel bar 44 extending into a bearing platform 51, and the concrete of the bearing platform 51 is poured.
h. After the concrete of the bearing platform 51 is finally set, the manhole cover 6 is fixed on the concrete, and a road surface around the inspection well is paved.
The structure described in the drawings of the present application is only an embodiment of a round manhole, and a drainage manhole in which a plastic component is used as a manhole body and reinforced concrete is used as a bearing structure is in the protection scope of the present application regardless of round, rectangular, fan-shaped and other shapes.
Claims (4)
1. The utility model provides an assembled plastics municipal drainage inspection shaft, mainly comprises runner section (1), well room section (2), apron section (3), well section of thick bamboo section (4), well head section (5), well lid (6), basis (7), characterized by: runner section (1), well room section (2), apron section (3), well barrel section (4), well head section (5) for the component that adopts plastics preparation, adopt the socket joint mode to connect the assembly between the component, constitute the well body of inspection shaft, the inspection shaft adopts the on-the-spot assembly of plastics component to combine cast in situ concrete construction, does from bottom to top in proper order: the device comprises a foundation (7), a launder section (1), a well chamber section (2), a cover plate section (3), a well cylinder section (4), a well mouth section (5) and a well cover (6);
the flow groove section (1) is characterized in that a flow groove inner wall (11) and a flow groove outer frame (12) form a water passing part of the inspection well, a flow groove column (17) is arranged on the periphery of the flow groove section (1), a space enclosed by the flow groove inner wall (11) and the flow groove outer frame (12) is used for arranging the flow groove column (17), a flow groove column reinforcing steel bar (18) is arranged in the flow groove column (17), and the lower end of the flow groove column reinforcing steel bar (18) is anchored in concrete of a foundation (7);
the well chamber section (2) is an operation space for maintenance of an inspection well, which is composed of a well chamber inner wall (21) and a well chamber outer frame (22), a well chamber column (23) is arranged on the periphery of the well chamber section (2), a space enclosed by the well chamber inner wall (21) and the well chamber outer frame (22) is used for arranging the well chamber column (23), a well chamber column reinforcing steel bar (24) is arranged in the well chamber column (23), the runner column (17) and the well chamber column (23) are positioned at the same plane position and are communicated up and down, the runner column reinforcing steel bar (18) and the well chamber column reinforcing steel bar (24) are connected in an up-down penetrating manner, and the upper end of the well chamber column reinforcing steel bar (24) extends into concrete of the cover plate (31);
the cover plate section (3) is a template for pouring the cover plate (31) and consists of a shaft connector (32) and a cover plate outer frame (33), the cover plate (31) is poured by adopting concrete, cover plate reinforcing steel bars (34) are arranged in the cover plate section (3), well chamber column reinforcing steel bars (24) extend into the cover plate (31), the cover plate (31) is supported on a well chamber column (23), the cover plate section (3) is arranged on the upper part of the well chamber section (2), and the upper part of the cover plate section (3) is a well cylinder section (4);
the well cylinder section (4) is a channel for pipeline dredging and well descending maintenance, a well cylinder column (43) is arranged on the periphery of the well cylinder section (4), a space enclosed by the well cylinder inner wall (41) and the well cylinder outer frame (42) is used for arranging the well cylinder column (43), well cylinder column reinforcing steel bars (44) are arranged in the well cylinder column (43), the well cylinder column (43) is supported on the cover plate (31), the lower end of the well cylinder column reinforcing steel bars (44) is anchored in concrete of the cover plate (31), and the upper end of the well cylinder column reinforcing steel bars (44) extends into the bearing platform (51);
the bearing platform (51) is positioned on the periphery of the wellhead section (5), bearing platform steel bars (52) are arranged in the bearing platform (51), and the well lid (6) is arranged on the bearing platform (51);
the structure forms a waterproof well body assembled by plastic components, and the reinforced concrete is a plastic-concrete structure inspection well of a frame bearing structure.
2. The fabricated plastic municipal drainage inspection shaft of claim 1, wherein: the runner section (1) is provided with an inlet pipe (13) and an outlet pipe (14), a runner (15) is arranged between the inlet pipe (13) and the outlet pipe (14), two sides of the runner (15) are provided with a workbench (16), the lower parts of the runner (15) and the workbench (16) are filled with concrete to form a well bottom (19), and the well bottom (19) is connected with the concrete of a runner column (17) into a whole.
3. The fabricated plastic municipal drainage inspection shaft of claim 1, wherein: the well head section (5) is a circular ring with the diameter the same as that of the inner wall (41) of the well shaft, is arranged at the upper part of the well shaft section (4) and is used as an inner mold for pouring a bearing platform (51), and the bearing platform (51) is poured by adopting concrete.
4. A construction method for the fabricated plastic municipal drainage manhole of claim 1, which is characterized in that: the construction method is characterized in that the foundation (7), the runner section (1), the well chamber section (2), the cover plate section (3), the well barrel section (4), the well mouth section (5) and the well lid (6) are assembled and combined with cast-in-place concrete in a segmented mode from bottom to top, and the construction method comprises the following steps:
a. manufacturing binding runner column reinforcing steel bars (18), well chamber column reinforcing steel bars (24), cover plate reinforcing steel bars (34), shaft column reinforcing steel bars (44) and bearing platform reinforcing steel bars (52), wherein the runner column reinforcing steel bars (18) and the well chamber column reinforcing steel bars (24) are manufactured by two methods, one method is that lap joint parts of the runner column reinforcing steel bars (18) and the well chamber column reinforcing steel bars (24) are reserved, the runner column reinforcing steel bars and the well chamber column reinforcing steel bars (24) are welded during sectional construction, and the other method is that the runner column reinforcing steel bars (18) and the well chamber column reinforcing steel bars (24) are combined into a whole and are directly communicated to the cover plate (31) from;
b. pouring a foundation (7) on the excavated inspection well foundation, and embedding the bound runner column reinforcing steel bars (18) in concrete of the foundation (7);
c. after the concrete of the foundation (7) is finally set, the runner section (1) is installed on the foundation, a runner column reinforcing steel bar (18) is sleeved in a space enclosed by the inner wall (11) of the runner and the outer frame (12) of the runner, the positions and elevations of the inlet pipe (13) and the outlet pipe (14) are adjusted, the runner section (1) is fixed, a gap between the bottom and the foundation (7) is sealed by adopting mortar, the runner column (17) is poured, the concrete is vibrated by adopting a vibrating rod, the concrete flows into the lower parts of the runner (15) and the workbench (16), air is removed from an air exhaust hole on the top surface of the workbench (16) to ensure that the concrete is densely filled to form a well bottom (19), and the concrete of the runner column (17) is combined into a whole;
d. after concrete of the launder column (17) is finally set, installing the well chamber section (2) at the upper part of the launder section (1), sleeving a well chamber column reinforcing steel bar (24) in a space enclosed by the well chamber inner wall (21) and the well chamber outer frame (22), smearing sealant on a bell socket at the joint of the launder section (1) and the well chamber section (2), inserting the well chamber section (2) into a bell socket of the launder section (1), and pouring concrete of the well chamber column (23);
e. after the concrete of the well chamber column (23) is finally set, installing the cover plate section (3) at the upper part of the well chamber section (2), smearing sealant at a bell socket at the joint of the well chamber section (2) and the cover plate section (3), inserting the cover plate section (3) into a bell mouth of the well chamber section (2), placing cover plate reinforcing steel bars (34), firmly binding with well chamber column reinforcing steel bars (24) extending into the cover plate (31), installing well cylinder column reinforcing steel bars (44), pre-embedding the well cylinder column reinforcing steel bars in the cover plate (31), and pouring the concrete of the cover plate (31);
f. after the concrete of the cover plate (31) is finally set, the shaft section (4) is arranged at the upper part of a shaft interface (32) of the cover plate section (3), a shaft column reinforcing steel bar (44) is sleeved in a space enclosed by a shaft inner wall (41) and a shaft outer frame (42), a bell socket at the joint of the shaft section (4) and the shaft interface (32) is coated with sealant, the shaft section (4) is inserted into a bell socket of the shaft interface (32) of the cover plate section (3), and a shaft column (43) is poured;
g. after the concrete of the well barrel column (43) reaches the strength, backfilling earthwork at the periphery of the inspection well and tamping and compacting, when the concrete is filled to the top of the well barrel section (4), installing the wellhead section (5) at the upper part of the well barrel section (4), smearing sealant on a bell socket at the joint of the wellhead section (5) and the well barrel section (4), inserting the wellhead section (5) into a bell socket of the well barrel section (4), placing a bell socket reinforcing steel bar (52), firmly binding with the well barrel column reinforcing steel bar (44) extending into the bell socket (51), and pouring the concrete of the bell socket (51);
h. after the concrete of the bearing platform (51) is finally set, the manhole cover (6) is fixed on the concrete, and the road surface around the inspection well is paved.
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| CN201710259929.XA CN107023061B (en) | 2017-04-20 | 2017-04-20 | Assembled plastic municipal drainage inspection well and construction method |
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| CN201710259929.XA CN107023061B (en) | 2017-04-20 | 2017-04-20 | Assembled plastic municipal drainage inspection well and construction method |
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| CN107023061B true CN107023061B (en) | 2020-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108222223A (en) * | 2017-11-20 | 2018-06-29 | 杭州市市政工程集团有限公司 | A kind of inspection shaft and method for cutting over for having pressure sewage conduct cutover for Large Diameter Pipeline |
| CN109334018B (en) * | 2018-10-12 | 2021-06-18 | 安徽郎川金鹏塑业有限公司 | Preparation method of injection molding inspection well convenient to enter |
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| WO2014109905A1 (en) * | 2012-12-28 | 2014-07-17 | Geneva Polymer Products, Llc | System and method for making polymer concrete |
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| CN205999926U (en) * | 2016-08-27 | 2017-03-08 | 无锡市政设计研究院有限公司 | A kind of high-strength composite plastic inspection shaft |
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2017
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| AT392504B (en) * | 1986-05-15 | 1991-04-25 | Buchgraber Franz Ing | Inspection shaft for sewage |
| KR20070080891A (en) * | 2006-02-09 | 2007-08-14 | 주식회사 준별에프알피산업 | F.r.p. sewerage manhole and construction method using thereby |
| CN201770995U (en) * | 2010-01-18 | 2011-03-23 | 单春校 | Environment-friendly multifunctional multi-protection integrated inspection well mouth |
| WO2014109905A1 (en) * | 2012-12-28 | 2014-07-17 | Geneva Polymer Products, Llc | System and method for making polymer concrete |
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