CN108086353B - Hollow wall plate mixed prefabricated assembly type comprehensive pipe gallery spliced by cast-in-place hidden beams and construction method thereof - Google Patents
Hollow wall plate mixed prefabricated assembly type comprehensive pipe gallery spliced by cast-in-place hidden beams and construction method thereof Download PDFInfo
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- CN108086353B CN108086353B CN201711268117.8A CN201711268117A CN108086353B CN 108086353 B CN108086353 B CN 108086353B CN 201711268117 A CN201711268117 A CN 201711268117A CN 108086353 B CN108086353 B CN 108086353B
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- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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Abstract
The utility model provides a hollow wallboard mixes prefabricated assembled utility tunnel of concatenation with cast-in-place hidden beam and construction method thereof, the both ends of cast-in-place bottom plate are connected through cast-in-place hidden beam with the lower part of a two-sided prefabricated empty stomach core-filled side wall respectively, the middle part of cast-in-place bottom plate be connected through cast-in-place hidden beam with the lower part of full prefabricated mid-board, the both ends of coincide roof plate be connected with the upper portion of two-sided prefabricated empty stomach core-filled side wall respectively, the middle part of coincide roof plate be connected with the upper portion of full prefabricated mid-board. The advantages of the prefabrication and cast-in-place process are integrated, the self weight of the prefabricated components can be reduced through reasonable splitting, the components can be connected into a whole through the cast-in-place filling core and the cast-in-place hidden beam, and the prefabrication assembly problem of nonstandard sections of the multi-cabin pipe gallery and the pipe gallery can be solved.
Description
Technical Field
The invention relates to a hollow wall plate mixed prefabricated assembly type comprehensive pipe gallery spliced by cast-in-place hidden beams and a construction method thereof.
Background
The urban underground comprehensive pipe gallery is an underground space structure with various pipelines such as electric power, communication, gas, water supply, water drainage and the like. The method solves the traffic jam caused by the zipper way, avoids the spider web in the air, plays a positive promoting role in improving the overall image of the city and creating the harmonious ecological environment of the city, and arouses high attention from top to bottom across the country.
Traditional cast-in-place piping lane construction mode entirely needs to carry out processes such as reinforcement processing ligature, formwork, concrete placement, maintenance and form removal at the job site to piping lane overall structure, and not only the construction process is complicated, and the construction cycle is long, and the template loss is big, still has the great raw and other materials of needs and deposits and process the place scheduling problem, has brought very big trouble for narrow and small construction environment in the urban area.
In order to solve the defect of the construction mode of the full cast-in-place pipe gallery, an integral prefabricated pipe gallery structure and an assembled prefabricated pipe gallery structure are provided. Integral prefabricated piping lane has the wholeness good, advantages such as installation process is simple, nevertheless has that the single section size is big, weight is big, difficult transportation hoist and mount, and the waterproof not insurable scheduling problem of joint department. And the current assembled piping lane structure is big because assemble the component many, the wholeness is poor, appears the junction structural damage easily, the sealing material damages or ageing defect such as infiltration in leading to the piping lane.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hollow wallboard hybrid prefabricated assembly type comprehensive pipe gallery spliced by cast-in-place hidden beams and a construction method thereof, wherein the hollow wallboard hybrid prefabricated assembly type comprehensive pipe gallery is easy to transport and hoist, has few abutted seams and good integrity.
The purpose of the invention is realized by adopting the following technical scheme:
the utility model provides a mix prefabricated assembled utility tunnel of hollow wallboard with cast-in-place dark roof splicing, includes multisection utility tunnel body, every section utility tunnel body is assembled by cast-in-place bottom plate, two-sided prefabricated fasting core-filling side wall, full prefabricated mid-board and coincide roof and forms, the upside in the both sides of cast-in-place bottom plate and middle part leaves U type dowel steel in advance, the lower extreme of two-sided prefabricated fasting core-filling side wall and full prefabricated mid-board also is equipped with U type dowel steel, two-sided prefabricated fasting core-filling side wall sets up the both sides at cast-in-place bottom plate and is connected with cast-in-place bottom plate through the crisscross overlap joint of U type dowel steel, full prefabricated fasting core-filling side wall sets up in the middle part of cast-in-place bottom plate and is connected with cast-in-place bottom plate through the crisscross overlap joint of U type dowel steel, two-sided prefabricated fasting core-filling side wall, full prefabricated mid-board and cast-in-place bottom plate' s The plates are connected.
And additional steel bars distributed along the direction of the hidden beam are arranged in the cast-in-place hidden beam, and the additional steel bars penetrate through the lap joint section to be connected with the U-shaped joint bars.
Concrete is poured at the longitudinal lap joint of the adjacent comprehensive pipe gallery bodies to form the cast-in-place hidden columns.
Be equipped with vertical reinforcing bar and closed stirrup in the cast-in-place dark post, the horizontal reinforcement of closed stirrup and upper portion utility tunnel body is connected, the both ends of vertical reinforcing bar are passed through screw and cast-in-place bottom plate and this body coupling of utility tunnel.
The double-sided prefabricated hollow core-filling side wall comprises a filling side prefabricated concrete layer and a non-filling side prefabricated concrete layer, a gap is formed between the filling side prefabricated concrete layer and the non-filling side prefabricated concrete layer, and reinforcing steel bars in the filling side prefabricated concrete layer and the non-filling side prefabricated concrete layer are connected through tie bars and truss bars.
The full prefabricated intermediate wall is the prefabricated form of whole board, and the reinforcing bar is all reserved to the top surface and the bottom surface of full prefabricated intermediate wall, the reservation reinforcing bar of full prefabricated intermediate wall bottom surface is U type dowel.
The coincide roof includes bottom and surface course, the bottom is precast concrete layer, the surface course is cast in situ concrete, be provided with cyclic annular reinforcing bar and truss muscle in the coincide roof, cyclic annular reinforcing bar stretches out to the inboard of full prefabricated mid-board and the inboard of two-sided prefabricated empty stomach core filling side wall from the coincide roof, is connected with the reservation reinforcing bar of full prefabricated mid-board and two-sided prefabricated empty stomach core filling side wall respectively.
The utility model provides a construction method of hollow wallboard mixed prefabrication assembled utility tunnel with cast-in-place hidden beam concatenation for assemble the utility tunnel, include the following step: construction of a supporting system → trench excavation → pouring of a concrete cushion layer → construction of waterproof and protective layers at the bottom of a cast-in-place bottom plate → steel reinforcement binding of the cast-in-place bottom plate, template installation → hoisting of a full-prefabricated middle partition wall component and a double-sided prefabricated hollow core-filling side wall, in-place → installation of an inclined strut, adjustment of the verticality of the full-prefabricated middle partition wall component and the double-sided prefabricated hollow core-filling side wall → staggered overlapping of U-shaped inserted bars of a hidden beam → installation of a hidden beam template → installation of lower axillary angle steel bars and templates → installation of upper axillary angle steel bars and templates → installation of superposed roof steel bars, pipeline embedding → installation of hidden column steel bars among sections of a comprehensive pipe gallery body → installation of the hidden column template → concrete pouring of the cast-in-place bottom plate, the double-sided prefabricated hollow core-filling side wall core part and the.
The cast-in-place hidden column connection is longitudinally arranged among pipe joints of the comprehensive pipe gallery body, and a steel edge rubber water stop belt and a dowel bar are arranged at a deformation joint of the comprehensive pipe gallery body; the pipe joint of utility tunnel body establishes the template through propping up and carries out the cast in situ and connect, the pipe joint department of utility tunnel body is provided with pre-buried sleeve and stagnant water screw rod.
The production process of the upper prefabricated pipe gallery is as follows:
(1) cleaning residues and dust on the die table;
(2) spraying a release agent on the whole plane of the matched mould;
(3) the installation template, the wall internal reinforcing steel bar and the reserved embedded part;
(4) carrying out single-sided concrete pouring in the mould, and vibrating to compact to form a superposed top plate and a full-prefabricated intermediate wall; for the double-sided prefabricated hollow core-filled side wall, the component needs to be turned over, and concrete pouring is carried out on the other side;
(5) entering a curing room to finish the initial setting of the concrete of the member;
(6) plastering, and flatly flattening and polishing the surface of the component;
(7) entering a maintenance cabin, and steaming the member to meet the strength requirement of demoulding and hoisting;
(8) after the maintenance is finished, demolding and removing the template;
(9) the turning plate is vertically lifted to a washing area;
(10) the peripheral section is cleaned to achieve the effect of exposing the aggregate;
(11) and the structure is subjected to a self-waterproof test.
By adopting the technical scheme, the comprehensive pipe gallery cast-in-place bottom plate, the double-sided prefabricated hollow core-filling side wall, the full-prefabricated intermediate wall and the superposed top plate are spliced, the cast-in-place bottom plate is provided with the U-shaped dowel steel which is lapped with the U-shaped reserved steel bar in the double-sided prefabricated hollow core-filling side wall, and then the longitudinal steel bar is added to form the cast-in-place hidden beam. The double-sided prefabricated hollow core-filling side wall component comprises two layers of prefabricated concrete layers, and the two layers of prefabricated concrete layers are connected through tie bars and truss bars. The prefabricated height of the precast concrete layer on the filling side is from the splicing position of the bottom plate to the top of the top plate, so that water resistance is facilitated. The prefabricated height of the precast concrete layer at the non-fill side is that the splicing position of the bottom plate is jacked to the bottom of the upper axillary corner. The internal tie bars and the truss bars of the double-sided prefabricated hollow core-filling side wall are arranged at intervals along the wall height and the wall length direction. And reinforcing steel bars are reserved on the top and bottom surfaces of the double-sided prefabricated hollow core-filling side wall and are connected with the reinforcing steel bars of the top and bottom plates during field assembly. The fully-prefabricated intermediate wall adopts a whole-plate prefabricated form, and reinforcing steel bars are reserved on the top bottom surface of the fully-prefabricated intermediate wall and are connected with the reinforcing steel bars of the top bottom plate during field assembly. The bottom layer of the superposed top plate is a precast concrete layer (poured to the axillary corner edge), and the surface layer is cast-in-place concrete. And annular reinforcing steel bars and truss ribs are arranged in the superposed top plate. The annular steel bars extend out of the inner side of the precast concrete layer at the side wall filling side and are connected with the side wall and the middle partition wall steel bars during on-site assembly. The invention comprehensively considers the factors of road conditions, vehicle transportation limiting conditions, pipe gallery section size, construction period, hoisting equipment, field and the like to divide the side wall pipe sections, and all the sections are connected through the cast-in-place hidden columns. The prefabricated member is manufactured, after positioning and paying off, bottom plate steel bar binding is carried out, a bottom plate is poured, maintenance and demolding are carried out, then the prefabricated member is assembled, the steel bars and the templates at the splicing position are installed, and cast-in-place partial concrete is poured to form the prefabricated and assembled integral type concrete comprehensive pipe gallery.
In conclusion, the invention integrates the advantages of the prefabrication and cast-in-place process, can reduce the dead weight of the prefabricated components through reasonable disassembly, is beneficial to construction and hoisting, can connect the components into a whole through the cast-in-place filling core and the cast-in-place hidden beam, can solve the prefabrication and assembly problems of the multi-cabin pipe gallery and the non-standard section of the pipe gallery on the premise of not reducing the integral bearing capacity and the deformability of the pipe gallery, and is a cast-in-place hidden beam spliced semi-prefabricated assembly type pipe gallery with easy transportation and hoisting, few splicing seams and good integrity and a construction method thereof.
Drawings
FIG. 1 is a cross-sectional view of the present invention.
FIG. 2 is a schematic view of the connection between the double-sided prefabricated hollow core-filled sidewall and the superposed top plate according to the present invention.
Fig. 3 is a schematic view of a connection structure of the fully prefabricated intermediate wall and the continuous truss reinforcing steel for the laminated roof according to the present invention.
Fig. 4 is a schematic view of a connection structure of the fully prefabricated intermediate wall and the laminated roof truss reinforcement according to the present invention.
FIG. 5 is a schematic view of the construction of the cast-in-place slab and the reserved U-shaped joint bars of the present invention.
Fig. 6 is a cross-sectional view of a double-sided prefabricated open web core-filled sidewall of the present invention.
Figure 7 is a schematic view of the inventive longitudinal seam node construction of a top laminate panel.
Fig. 8 is a schematic view of the connection structure of the cast-in-place hidden beam.
Figure 9 is a schematic view of the present invention of the utility tunnel body internode connection configuration.
In the drawings: the prefabricated concrete slab comprises 1-a cast-in-place bottom plate, 2-double-sided prefabricated hollow core-filling side walls, 3-a full-prefabricated middle partition wall, 4-a superposed top plate, 5-a cast-in-place hidden beam, 6-an upper axillary corner, 7-a screw, 8-a diagonal reinforcement, 9-a tie bar, 10-a top plate truss reinforcement, 11-a ring reinforcement, 12-a side wall reserved reinforcement, 13-a middle partition wall reserved reinforcement, 16-a U-shaped inserted reinforcement, 17-a hidden beam template, 18-an additional reinforcement, 20-a truss reinforcement, 21-a screw, 22-a hidden column template, 23-a closed hoop reinforcement, 24-a lower axillary corner, 25-a concrete-filling side prefabricated concrete layer, 26-a concrete-non-filling side prefabricated concrete layer, 27-a bottom layer, 28-a connecting rod.
Detailed Description
The concrete implementation mode of the hollow wall plate hybrid prefabricated comprehensive pipe gallery spliced by the cast-in-place hidden beams and the construction method thereof is described in detail below by combining the attached drawings and concrete examples.
As shown in fig. 1 to 5, a hollow wall panel hybrid prefabricated assembly type comprehensive pipe gallery spliced by cast-in-place hidden beams comprises a plurality of sections of comprehensive pipe gallery bodies, wherein each section of the comprehensive pipe gallery body is formed by assembling a cast-in-place bottom plate 1, two-sided prefabricated hollow core-filling side walls 2, a fully prefabricated intermediate wall 3 and a superposed top plate 4, two sides of the cast-in-place bottom plate 1 are respectively connected with the lower part of one two-sided prefabricated hollow core-filling side wall 2 through the cast-in-place hidden beam 5, the middle part of the cast-in-place bottom plate 1 is connected with the lower part of the fully prefabricated intermediate wall 3 through the cast-in-place hidden beam 5, two sides of the superposed top plate 4 are respectively connected with the upper parts of the two-sided prefabricated hollow core-filling side walls. According to the calculation requirement, a lower axillary angle 24 can be arranged at the joint of the double-sided prefabricated hollow core-filling side wall 2 and the cast-in-place bottom plate 1, and an upper axillary angle 6 can be arranged at the joint of the double-sided prefabricated hollow core-filling side wall 2 and the superposed top plate 4.
The top of the cast-in-place bottom plate 1 is reserved with U-shaped joint bars 16, the double-sided prefabricated hollow core-filling side wall is reserved with U-shaped joint bars 16, the U-shaped joint bars 16 are in staggered lap joint with the cast-in-place bottom plate, the height of a lap joint area is about 200mm, and 4 additional steel bars 18 are longitudinally arranged and penetrate through the lap joint section to form the cast-in-place hidden beam 5.
The double-sided prefabricated hollow core-filled side wall 2 comprises a filling-side prefabricated concrete layer 25 and a non-filling-side prefabricated concrete layer 26, a gap is formed between the filling-side prefabricated concrete layer 25 and the non-filling-side prefabricated concrete layer 26, reinforcing steel bars are arranged in the filling-side prefabricated concrete layer 25 and the non-filling-side prefabricated concrete layer 26, and the filling-side prefabricated concrete layer 25 is connected with the reinforcing steel bars arranged in the non-filling-side prefabricated concrete layer 26 through tie bars 9 and truss bars 20; the precast height of the precast concrete layer 25 at the filling side is from the splicing position of the bottom plate to the top of the top plate. The precast height of the precast concrete layer 26 at the non-fill side is the splicing position of the bottom plate to the bottom of the upper axillary corner 6; the reinforcing steel bars arranged in the filling side precast concrete layer 25 and the non-filling side precast concrete layer 26 extend out of the top and bottom surfaces of the filling side precast concrete layer 25 and the non-filling side precast concrete layer 26 to form reserved reinforcing steel bars, wherein the bottom surface is provided with U-shaped joint bars 16, and the side edges of the U-shaped joint bars extend out to form horizontal reinforcing steel bars.
The superposed top plate 4 is internally provided with annular steel bars 11 and top plate truss bars 10. The roof truss ribs 10 are either continuous or broken. When the top plate truss ribs 10 are disconnected, the top plate truss ribs 10 are connected by welding through the connecting rods 28. The annular steel bars 11 extend out of the inner sides of the precast concrete layers 25 on the filling sides of the double-sided precast hollow core-filled side walls 2 and are connected with the reserved steel bars 12 of the double-sided precast hollow core-filled side walls 2 and the reserved steel bars 13 on the top surfaces of the full-precast intermediate walls 3 during on-site assembly. The bottom of the full prefabricated intermediate wall 3 is reserved with a U-shaped joint bar 16 which is lapped with the middle reserved with the U-shaped joint bar 16 of the cast-in- place bottom plate 1, and 4 additional steel bars 18 are longitudinally arranged and penetrate through the lapped section to form the cast-in-place hidden beam 5.
The side wall pipe joints are divided by comprehensively considering factors such as road conditions, vehicle transportation limiting conditions, pipe gallery section size, construction period, hoisting equipment and sites, the sections of the double-sided prefabricated hollow core-filled side wall 2 are connected through the cast-in-place hidden columns, namely, the steel bars of the cast-in-place hidden columns are composed of vertical steel bars and closed stirrups 23, the closed stirrups 23 are connected with the horizontal steel bars of the double-sided prefabricated hollow core-filled side wall 2, and two ends of the vertical steel bars are connected with the precast concrete layer 25 on the filling side and the precast concrete layer 26 on the non-filling side through screws 21. The overlapped top plates 4 are longitudinally connected through the splicing and sewing reinforcing steel bars 29.
The utility model provides a construction method of hollow wallboard mixed prefabrication assembled utility tunnel with cast-in-place hidden beam concatenation for assemble the utility tunnel, include the following step: construction of a supporting system → trench excavation → pouring of a concrete cushion → construction of a waterproof and protective layer at the bottom of a cast-in-place bottom plate → reinforcement of the cast-in-place bottom plate, template installation → hoisting of a full-prefabricated middle partition wall component and a double-sided prefabricated hollow core-filling side wall, in-place → installation of a diagonal brace, adjustment of the verticality of the full-prefabricated middle partition wall component and the double-sided prefabricated hollow core-filling side wall → staggered lap joint of U-shaped inserted bars of a hidden beam → installation of a hidden beam template 17 → installation of lower axillary angle steel bars and templates → installation of upper axillary angle steel bars and templates → installation of superposed roof steel bars, pipeline embedding → installation of hidden column steel bars among sections of a comprehensive pipe gallery body → installation of the hidden column template 22 → concrete pouring of the cast-in-place bottom plate, the double-sided prefabricated hollow core-filling side wall core part and. The utility tunnel body is not more than 4 meters in height, and not more than 2.5 meters in width.
The cast-in-place hidden column connection is longitudinally arranged among pipe joints of the comprehensive pipe gallery body, and a steel edge rubber water stop belt and a dowel bar are arranged at a deformation joint of the comprehensive pipe gallery body; the pipe joint of utility tunnel body establishes the template through propping up and carries out the cast in situ and connect, the pipe joint department of utility tunnel body is provided with pre-buried sleeve and stagnant water screw rod.
The specific design basis of the invention is as follows:
1. prefabricated pipe section length division
According to the road traffic regulations, the over-limit transportation is realized when the total height of the vehicle and the goods exceeds 4 meters or the total width exceeds 2.5 meters. The standard segment length is reasonably divided under the condition of fully considering the factors such as road conditions, vehicle transportation limiting conditions, pipe gallery section size, construction period, hoisting equipment and field;
2. design of hanging point
In order to avoid the damage of the prefabricated parts in the transportation and assembly process, lifting points are reasonably arranged and reinforced according to the weight and the size of the side walls, the middle partition wall and the top plate and the lifting requirements;
3. temporary support design
Calculating and determining the arrangement type and the interval of the temporary supports according to the height, the span and the plate thickness of the fully prefabricated partition wall and the top plate, and designing an embedded part;
4. pipe joint connection and cast-in-place hidden beam connection
The pipe joints are longitudinally connected by cast-in-place embedded columns, and the deformation joints are provided with steel-edge rubber water stops and dowel bars. The pipe joint is connected and cast-in-place hidden beam 5 is cast in situ through erecting a template, and a pre-buried sleeve and a water stop screw are arranged at the position for facilitating tool type aluminum mould installation.
The production process of the prefabricated pipe gallery on the final upper part of the invention is as follows:
1. and cleaning residues and dust on the die table.
2. And (4) spraying a release agent on the whole plane of the die table.
3. And installing a template, reinforcing steel bars in the wall and reserving embedded parts.
4. And (4) performing single-sided concrete pouring in the mould, and compactly vibrating to form a superposed top plate and a fully prefabricated intermediate wall. And for the double-sided prefabricated hollow core-filled side wall, the component needs to be turned over, and the other side of concrete pouring is carried out.
5. And entering a curing room to finish the initial setting of the concrete of the member.
6. And (5) smearing, and flattening and polishing the surface of the component.
7. And (5) entering a maintenance cabin, and steaming the member to meet the strength requirement of demoulding and hoisting.
8. And (5) after the maintenance is finished, demolding and removing the template.
9. The turning plate is vertically lifted to a washing area.
10. The peripheral section is cleaned to achieve the effect of exposing the aggregate.
The structure is tested from water-proofing.
The field assembly process of the device is as follows:
1. constructing a supporting system;
2. excavating a groove;
3. pouring a concrete cushion layer;
4. constructing a bottom waterproof layer and a protective layer of the bottom plate;
5. binding the reinforcing steel bars of the bottom plate;
6. hoisting and positioning the vertical wall component;
7. installing inclined struts and adjusting the verticality of the wall board;
8. cast-in-place hidden beam steel bar installation and template installation
9. Installing reinforcing steel bars and templates of the underarm corners;
10. installing a template of an upper axillary corner;
11. the superposed top plate is hoisted and positioned;
12. reinforcing steel bars and pipelines at the upper axillary corners of the superposed top plate are embedded;
13. installing the internode hidden column steel bars and installing the templates;
14. concrete pouring is carried out on the bottom plate, the wall core part and the top plate;
15. removing the mold and maintaining;
16. constructing waterproof and protective layers outside the outer wall and the top plate;
17. and (6) backfilling the trench.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a mix prefabricated assembled utility tunnel with hollow wallboard of cast-in-place hidden beam concatenation, includes multisection utility tunnel body, its characterized in that: each section of the comprehensive pipe gallery body is formed by assembling a cast-in-place bottom plate, double-sided prefabricated hollow core-filling side walls, a fully prefabricated middle partition wall and a superposed top plate, wherein U-shaped joint bars are reserved on the two sides of the cast-in-place bottom plate and the upper side of the middle part of the cast-in-place bottom plate, the upper ends of the double-sided prefabricated hollow core-filling side walls and the fully prefabricated middle partition wall are provided with reserved steel bars, the lower ends of the double-sided prefabricated hollow core-filling side walls and the fully prefabricated middle partition wall are provided with U-shaped joint bars, the double-sided prefabricated hollow core-filling side walls are arranged on the two sides of the cast-in-place bottom plate and are connected with the cast-in-place bottom plate through staggered lap joint of the U-shaped joint bars, the fully prefabricated middle partition wall is arranged in the middle part of the cast-in-place bottom plate and is connected with the cast-in,
the cast-in-place hidden beam is internally provided with additional steel bars which are distributed along the direction of the hidden beam, the additional steel bars pass through the lap joint section to be connected with the U-shaped dowel bars, concrete is poured at the longitudinal lap joint part of the adjacent comprehensive pipe gallery body to form a cast-in-place hidden column, the cast-in-place hidden column is internally provided with vertical steel bars and closed stirrups, the closed stirrups are connected with horizontal steel bars of the upper comprehensive pipe gallery body, two ends of the vertical steel bars are connected with the cast-in-place bottom plate and the comprehensive pipe gallery body through screws,
the full prefabricated intermediate wall is the prefabricated form of whole board, and the reinforcing bar is all reserved to the top surface and the bottom surface of full prefabricated intermediate wall, the reservation reinforcing bar of full prefabricated intermediate wall bottom surface is U type dowel.
2. The hybrid prefabricated utility tunnel of hollow core wallboard spliced with cast-in-place dark beam of claim 1, characterized in that: the double-sided prefabricated hollow core-filling side wall comprises a filling side prefabricated concrete layer and a non-filling side prefabricated concrete layer, a gap is formed between the filling side prefabricated concrete layer and the non-filling side prefabricated concrete layer, and reinforcing steel bars in the filling side prefabricated concrete layer and the non-filling side prefabricated concrete layer are connected through tie bars and truss bars.
3. The hybrid prefabricated utility tunnel of hollow core wallboard spliced with cast-in-place dark beam of claim 1, characterized in that: the coincide roof includes bottom and surface course, the bottom is precast concrete layer, the surface course is cast in situ concrete, be provided with cyclic annular reinforcing bar and truss muscle in the coincide roof, cyclic annular reinforcing bar stretches out to the inboard of full prefabricated mid-board and the inboard of two-sided prefabricated empty stomach core filling side wall from the coincide roof, is connected with the reservation reinforcing bar of full prefabricated mid-board and two-sided prefabricated empty stomach core filling side wall respectively.
4. A construction method of a hollow wall panel mixed prefabricated comprehensive pipe gallery spliced by cast-in-place hidden beams, which is used for assembling the comprehensive pipe gallery of any one of claims 1 to 3, and is characterized in that: the method comprises the following steps: construction of a supporting system → trench excavation → pouring of a concrete cushion layer → construction of waterproof and protective layers at the bottom of a cast-in-place bottom plate → steel reinforcement binding of the cast-in-place bottom plate, template installation → hoisting of a full-prefabricated middle partition wall component and a double-sided prefabricated hollow core-filling side wall, in-place → installation of an inclined strut, adjustment of the verticality of the full-prefabricated middle partition wall component and the double-sided prefabricated hollow core-filling side wall → staggered overlapping of U-shaped inserted bars of a hidden beam → installation of a hidden beam template → installation of lower axillary angle steel bars and templates → installation of upper axillary angle steel bars and templates → installation of superposed roof steel bars, pipeline embedding → installation of hidden column steel bars among sections of a comprehensive pipe gallery body → installation of the hidden column template → concrete pouring of the cast-in-place bottom plate, the double-sided prefabricated hollow core-filling side wall core part and the.
5. The construction method of the hollow wallboard hybrid prefabricated assembly type comprehensive pipe gallery spliced by the cast-in-place hidden beam according to claim 4, characterized in that: the cast-in-place hidden column connection is longitudinally arranged among pipe joints of the comprehensive pipe gallery body, and a steel edge rubber water stop belt and a dowel bar are arranged at a deformation joint of the comprehensive pipe gallery body; the pipe joint of utility tunnel body establishes the template through propping up and carries out the cast in situ and connect, the pipe joint department of utility tunnel body is provided with pre-buried sleeve and stagnant water screw rod.
6. The construction method of the hollow wallboard hybrid prefabricated assembly type comprehensive pipe gallery spliced by the cast-in-place hidden beam according to claim 4, characterized in that: the production process of the upper prefabricated pipe gallery is as follows:
(1) cleaning residues and dust on the die table;
(2) spraying a release agent on the whole plane of the matched mould;
(3) the installation template, the wall internal reinforcing steel bar and the reserved embedded part;
(4) carrying out single-sided concrete pouring in the mould, and vibrating to compact to form a superposed top plate and a full-prefabricated intermediate wall; for the double-sided prefabricated hollow core-filled side wall, the component needs to be turned over, and concrete pouring is carried out on the other side;
(5) entering a curing room to finish the initial setting of the concrete of the member;
(6) plastering, and flatly flattening and polishing the surface of the component;
(7) entering a maintenance cabin, and steaming the member to meet the strength requirement of demoulding and hoisting;
(8) after the maintenance is finished, demolding and removing the template;
(9) the turning plate is vertically lifted to a washing area;
(10) the peripheral section is cleaned to achieve the effect of exposing the aggregate;
(11) self-waterproof test of the structure;
the inner side of the joint of the superposed top plate and the double-sided prefabricated hollow core-filling side wall is provided with an upper axillary corner, and the prefabricated height of the prefabricated concrete layer at the soil filling side is from the splicing position of the bottom plate to the top of the top plate; the prefabricated height of the non-fill side prefabricated concrete layer is that the splicing position of the bottom plate is up to the bottom of the upper axillary corner; the reinforcing steel bars in the precast concrete layers on the filling side and the precast concrete layers on the non-filling side extend out of the top bottom surface to form reserved reinforcing steel bars, the reinforcing steel bars extending out of the side edges to form horizontal reinforcing steel bars, and the reserved reinforcing steel bars extending out of the bottom surface are U-shaped joint bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109333779B (en) * | 2018-11-29 | 2024-12-03 | 承德绿建建筑节能科技有限公司 | Combined mold for casting prefabricated composite wall and prefabricated composite wall structure |
| CN109577536A (en) * | 2019-01-18 | 2019-04-05 | 长沙远大住宅工业集团股份有限公司 | The connecting node and its construction method of laminated floor slab and wall |
| CN109706966A (en) * | 2019-01-31 | 2019-05-03 | 浙江大学 | A kind of flexible prefabricated part and the method using the progress piping lane construction of flexible prefabricated part |
| CN110409326B (en) * | 2019-07-18 | 2021-09-10 | 中铁第一勘察设计院集团有限公司 | Reinforcement and construction method of oblique special-shaped box culvert |
| CN114351755A (en) * | 2021-12-22 | 2022-04-15 | 北京工业大学 | Combined shell pipe gallery top L-shaped joint and construction method thereof |
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