CN116289677A - Drainage box culvert construction process - Google Patents
Drainage box culvert construction process Download PDFInfo
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- CN116289677A CN116289677A CN202310049802.0A CN202310049802A CN116289677A CN 116289677 A CN116289677 A CN 116289677A CN 202310049802 A CN202310049802 A CN 202310049802A CN 116289677 A CN116289677 A CN 116289677A
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- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 27
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- 239000010959 steel Substances 0.000 claims abstract description 27
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
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- 238000007599 discharging Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a drainage box culvert construction process, which comprises the following steps: step one, cleaning a field; step two, measuring and lofting; step three, excavating box culvert base grooves; installing a concrete cushion template and pouring a concrete cushion; step five, manufacturing box culvert bottom plate steel bars, installing box culvert bottom plate templates and pouring box culvert bottom plate concrete: step six, erecting a scaffold, installing a box culvert side plate template, and binding box culvert side plate reinforcing steel bars; step seven, installing a box culvert top plate template and binding box culvert top plate reinforcing steel bars; pouring box culvert side plates and roof concrete; step nine, dismantling the scaffold, backfilling earthwork on two sides of the box culvert, veneering an end wall of the box culvert, paving a pavement layer on the top of the box culvert, and arranging railings on two sides of the pavement on the top of the pavement layer. The construction process is simple to operate, the drainage box culvert constructed by the process has stable foundation structure, uneven settlement of the foundation and water seepage of the box culvert are not easy to occur, and the construction cost is low.
Description
Technical Field
The invention relates to the technical field of box culvert construction. More particularly, the invention relates to a drainage box culvert construction process.
Background
Park projects generally include landscape park construction projects, bridge and culvert projects, water supply and drainage projects and greening projects, wherein the bridge and culvert projects often require culverts to be built under embankments for landscape river penetration. And steel structure bridges such as reinforced concrete bridges or steel bridge such as simply supported girder bridges, continuous girder bridges, arch bridges, cable-stayed bridges and the like, no matter which bridge is composed of an upper structure, a lower structure and an attached structure, wherein the foundation, the bridge pier, the bridge abutment and the support in the lower structure are constructed, special mechanical equipment such as drilling equipment, piling equipment and hoisting equipment is needed, the foundation construction and detection of pile foundations and the like are long in time consumption, the quality problem of the pile foundations is more troublesome to process, and the overall construction cost is higher.
Disclosure of Invention
It is an object of the present invention to solve at least the above problems and to provide at least the advantages to be described later.
The invention also aims to provide a drainage box culvert construction process, which is simple in construction process operation, and the drainage box culvert constructed by the process has stable foundation structure and is not easy to generate uneven settlement of a foundation and seepage of the box culvert.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a drainage box culvert construction process including:
step one, cleaning a field;
step two, measuring and lofting;
step three, excavating box culvert base grooves;
installing a concrete cushion template and pouring a concrete cushion;
step five, manufacturing box culvert bottom plate steel bars, installing box culvert bottom plate templates and pouring box culvert bottom plate concrete:
step six, erecting a scaffold, installing a box culvert side plate template, and binding box culvert side plate reinforcing steel bars;
step seven, installing a box culvert top plate template and binding box culvert top plate reinforcing steel bars;
pouring box culvert side plates and roof concrete;
step nine, dismantling the scaffold, backfilling earthwork on two sides of the box culvert, veneering an end wall of the box culvert, paving a pavement layer on the top of the box culvert, and arranging railings on two sides of the pavement on the top of the pavement layer.
Preferably, the process of installing the concrete cushion template and pouring the concrete cushion in the fourth step specifically comprises the following steps: the concrete cushion template adopts a wood die, the height of the template is the same as the thickness of the concrete cushion, the top surface of the template is flush with the top surface of the concrete slab and is consistent with the design elevation, and the bottom surface of the template is tightly attached to the bottom surface of the foundation pit; the cushion layer is formed by pouring concrete with the strength grade of C30 and the freezing resistance grade of F50 and is continuously poured without a construction joint, after the concrete pouring is finished, the outer surface of the concrete is scraped, the outer surface is cleaned, the concrete is compacted and is polished after the water is collected, the curing can be covered after the initial setting, and the mold can be removed after the concrete pouring is finished for 24 hours.
Preferably, the process for manufacturing the box culvert bottom plate reinforcing steel bar in the fifth step comprises the following steps: checking the standard, grade and processing number of the reinforcing steel bars, blanking according to a batching list after checking, carrying out a first processing test on the reinforcing steel bars with the same batch of the same type of size, and processing in batches after checking to be qualified, wherein when the reinforcing steel bars are processed, the reinforcing steel bars are processed according to the number, diameter, grade, length and number of the reinforcing steel bars in the drawing, and the section of the reinforcing steel bar is configured to be in tension with the reinforcing steel bar joint in the same section, wherein the section of the reinforcing steel bar joint is not more than 50% of the total area of the reinforcing steel bars. All the reinforcing steel bar joints with the diameters of more than or equal to 22mm are mechanically connected.
Preferably, the process of installing the box culvert bottom plate template in the fifth step comprises the following steps: ejecting a vertical mould line on the concrete cushion layer by using an ink fountain; driving wood piles on the outer side of the vertical mould line, wherein the distance between the wood piles is 60 cm-120 cm, and the height of the exposed ground part of the wood piles is not less than 30cm; when the side mould of the bottom plate is erected, the lower opening of each mould plate is tightly attached to the vertical mould line, the mould plate is erected and the mould is nailed at the same time, the crosspiece is positioned at the position 20mm away from the upper opening and the lower opening of the mould plate, all the overlapped positions with the vertical mould are connected by using iron nails in a floating nail method, and the iron nails are not shorter than 75mm; the flat support length of the bottom plate side mould is subjected to grain ink breaking between the lower crosspiece and the wood pile, so that the template is ensured to be clung to a vertical mould line, and the support is firmly connected with the lower crosspiece and the wood pile by using floating nails; when the diagonal bracing is added, the upper end of the diagonal bracing is propped against the upper crosspiece, iron nails are added for connection, then a wooden wedge is added between the lower end of the diagonal bracing and the wooden piles, the perpendicularity of the inner face of the bottom plate side die is adjusted by the wooden die, and after the positive template is hung by a wire, the diagonal bracing, the template and the wooden piles are locked by the iron nails.
Preferably, the process of pouring the box culvert bottom plate concrete in the fifth step specifically comprises the following steps: and (3) adopting commercial concrete, pouring by adopting a concrete pump truck after the commercial concrete is sent to a pouring place, and determining the maximum allowable time from paving, vibrating and leveling to pouring by a laboratory according to the cement initial setting time and the construction air temperature.
Preferably, the step six of setting up the scaffold specifically includes: the method comprises the steps of leveling a field, positioning and arranging a through long upright rod base plate, discharging a longitudinal sweeping rod, erecting an upright rod, fastening the longitudinal sweeping rod with the upright rod, installing a transverse sweeping rod, installing a longitudinal horizontal rod, installing a transverse horizontal rod, binding a safety net, paving a scaffold board on an operation layer, wherein the scaffold adopts a full-hall frame, the longitudinal distance of the scaffold is 1.5m, the transverse distance of the scaffold is 1.0m, the sweeping rod is arranged at a position which is not more than 20cm away from the ground, and the step distance of the longitudinal and transverse horizontal rods is not more than 1.5m.
Preferably, the process of installing the box culvert side plate template in the step six specifically comprises the following steps: the box culvert side plate template adopts a 15mm thick wood glue plate, the box culvert side plate outside template is erected through a wood pile driving mould, the box culvert side plate inside template is erected through a phi 22 steel pile pre-buried on the corresponding position of the box culvert bottom plate, the lower opening of the template leans against the box culvert bottom plate, the inner template and the outer template are connected through split bolts, the lower opening of the template is propped against by a flat support on the outer side of the bottom of the side plate template, and the upper opening of the template is propped against by an inclined support on the outer side of the top of the side plate template.
Preferably, in the eighth step, concrete is poured on the side plates and the top plate of the box culvert, and the concrete pouring process specifically comprises the following steps: the concrete pouring of the box culvert side plates and the top plate is carried out twice, the concrete of the side plates is poured for the first time, the concrete is poured to the position of 30cm upwards from the chamfer angle of the bottom plate, the concrete strength reaches more than 90% of the design strength, the twice-poured joint surface is treated according to the working seam, the symmetrical blanking pouring of the two side plates is carried out during the second pouring, the phenomenon that the stress of the template is unbalanced and the phenomenon of unsmooth is generated is prevented, the top-mold concrete pouring firstly adopts a vibrating rod to vibrate, and then a flat plate vibrator is adopted to re-vibrate for one time, so that the surface concrete is subjected to light receiving and napping treatment.
Preferably, when the side plate concrete is poured for the first time, the top surface of the concrete is poured into a tongue-and-groove structure.
Preferably, a water stop plate is preset in the template when the side plate concrete is poured for the first time, so that the water stop plate is pre-buried in the formed box culvert side plate, the water stop plate is arranged in the middle of a tongue-and-groove on the top surface of the concrete, the water stop plate comprises a polyurethane plate body and a heat transfer water guide line which is arranged in the polyurethane plate body and is interwoven in a warp-weft mode, the heat transfer water guide line comprises a metal wire core and water guide fibers wound outside the metal wire core, and the heat transfer water guide line in the warp direction in the water stop plate extends from the upper end of the water stop plate to a box culvert top plate concrete pouring area;
the box culvert roof concrete placement area sets up the ventilation pipe along box culvert hole trend, the ventilation pipe is located the stagnant water board top, will transfer heat and lead the waterline to penetrate in the ventilation pipe from the ventilation pipe bottom again to make box culvert curb plate and roof pour the shaping after, flow the air in the ventilation hole and take away the absorbed seepage moisture of from the tongue-and-groove of transfer heat lead the waterline, still be connected the sinle silk of waterline and box culvert roof reinforcing bar, so that the heat in the box culvert roof is conducted to the sinle silk of transfer heat lead the waterline through this reinforcing bar, thereby accelerate the evaporation of the absorbed moisture in the water guide fibre.
The invention at least comprises the following beneficial effects: the construction process of the drainage box culvert is simple in operation, and the drainage box culvert constructed by the process is stable in foundation structure and not easy to cause uneven settlement of the foundation due to the fact that the drainage box culvert is constructed on the concrete cushion layer; in addition, as the cast-in-situ box culvert adopts a twice pouring process, shrinkage joints which are easy to produce between cast-in-situ concrete and post-cast concrete are firstly formed, so that water flows leak into embankments on two sides of the box culvert when the box culvert is drained, the embankments are caused to produce uneven settlement, steps are produced between the road surface on the embankments and the road surface on the top of the box culvert.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic diagram of a three-dimensional structure of a drainage box culvert after construction is completed according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional structure of a drainage box culvert after construction is completed according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional structure of a drainage box culvert after construction is completed according to an embodiment of the invention;
fig. 4 is a schematic structural view of a water stop plate according to an embodiment of the invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
The construction methods described in the following embodiments are conventional methods unless otherwise specified, and the materials are commercially available unless otherwise specified; in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present invention.
As shown in fig. 1 to 4, the present invention provides a construction process of a drainage box culvert 1, comprising:
step one, cleaning a field;
before earth excavation, the tillage planting soil, accumulated water, sundries and barriers in the construction area are removed and treated. The construction site must be flat, firm, reasonable in arrangement and convenient to operate. The construction site is compact and reasonable in arrangement, construction materials, tools and auxiliary facilities are orderly placed, and all materials and materials cannot be stacked at will. Setting all signs, slogan charts, post responsibility systems and the like on site.
Step two, measuring and lofting;
and (3) according to a paying-off plane locating diagram in a design construction drawing, measuring the construction position of the paying-off box culvert 1 by using a GPS, driving a wood pile as a mark, and making an obvious mark (a wood pile top nail steel nail mark). According to the conditions of the excavation width and the embedding depth of the foundation trench, calculating an opening line of the foundation trench by taking the slope releasing coefficient of the trench into consideration, and scattering white ash out of the excavation edge line of the foundation trench. Checking, reporting to a supervision engineer for acceptance, and performing foundation trench excavation after the inspection is qualified by on-site supervision
Step three, excavating a box culvert 1 foundation trench;
when the foundation trench is excavated, the excavation sequence, the route and the excavation depth should be reasonably determined. The earth excavation is preferably carried out from top to bottom in a layered and segmented manner, the foundation trench bottom of the box culvert 1 is excavated according to design requirements, and the foundation trench bottom is corrected and tamped.
Installing a concrete cushion layer 2 template and pouring the concrete cushion layer 2;
the process of installing the concrete cushion 2 template and pouring the concrete cushion 2 specifically comprises the following steps: the concrete cushion layer 2 template adopts a wood die, the height of the template is the same as the thickness of the concrete cushion layer 2, the top surface of the template is flush with the top surface of the concrete slab and is consistent with the design elevation, and the bottom surface of the template is tightly attached to the bottom surface of the foundation pit; the cushion layer is formed by pouring concrete with the strength grade of C30 and the freezing resistance grade of F50 and is continuously poured without a construction joint, after the concrete pouring is finished, the outer surface of the concrete is scraped, the outer surface is cleaned, the concrete is compacted and is polished after the water is collected, the curing can be covered after the initial setting, and the mold can be removed after the concrete pouring is finished for 24 hours.
Step five, manufacturing steel bars of the box culvert bottom plate 101, installing templates of the box culvert bottom plate 101 and pouring concrete of the box culvert bottom plate 101:
the concrete process for installing the box culvert bottom plate 101 template comprises the following steps: ejecting a vertical mould line on the concrete cushion layer 2 by using an ink fountain; driving wood piles on the outer side of the vertical mould line, wherein the distance between the wood piles is 60 cm-120 cm, and the height of the exposed ground part of the wood piles is not less than 30cm; when the side mould of the bottom plate is erected, the lower opening of each mould plate is tightly attached to the vertical mould line, the mould plate is erected and the mould is nailed at the same time, the crosspiece is positioned at the position 20mm away from the upper opening and the lower opening of the mould plate, all the overlapped positions with the vertical mould are connected by using iron nails in a floating nail method, and the iron nails are not shorter than 75mm; the flat support length of the bottom plate side mould is subjected to grain ink breaking between the lower crosspiece and the wood pile, so that the template is ensured to be clung to a vertical mould line, and the support is firmly connected with the lower crosspiece and the wood pile by using floating nails; when the diagonal bracing is added, the upper end of the diagonal bracing is propped against the upper crosspiece, iron nails are added for connection, then a wooden wedge is added between the lower end of the diagonal bracing and the wooden piles, the perpendicularity of the inner face of the bottom plate side die is adjusted by the wooden die, and after the positive template is hung by a wire, the diagonal bracing, the template and the wooden piles are locked by the iron nails.
The process for manufacturing the box culvert bottom plate 101 steel bars comprises the following steps: checking the standard, grade and processing number of the reinforcing steel bars, blanking according to a batching list after checking, carrying out a first processing test on the reinforcing steel bars with the same batch of the same type of size, and processing in batches after checking to be qualified, wherein when the reinforcing steel bars are processed, the reinforcing steel bars are processed according to the number, diameter, grade, length and number of the reinforcing steel bars in the drawing, and the section of the reinforcing steel bar is configured to be in tension with the reinforcing steel bar joint in the same section, wherein the section of the reinforcing steel bar joint is not more than 50% of the total area of the reinforcing steel bars. All the reinforcing steel bar joints with the diameters of more than or equal to 22mm are mechanically connected.
The concrete pouring process of the box culvert bottom plate 101 specifically comprises the following steps: and (3) adopting commercial concrete, pouring by adopting a concrete pump truck after the commercial concrete is sent to a pouring place, and determining the maximum allowable time from paving, vibrating and leveling to pouring by a laboratory according to the cement initial setting time and the construction air temperature.
Step six, erecting a scaffold, installing a box culvert side plate 102 template, and binding steel bars of the box culvert side plate 102;
the process of setting up the scaffold specifically comprises: the method comprises the steps of leveling a field, positioning and arranging a through long upright rod base plate, discharging a longitudinal sweeping rod, erecting an upright rod, fastening the longitudinal sweeping rod with the upright rod, installing a transverse sweeping rod, installing a longitudinal horizontal rod, installing a transverse horizontal rod, binding a safety net, paving a scaffold board on an operation layer, wherein the scaffold adopts a full-hall frame, the longitudinal distance of the scaffold is 1.5m, the transverse distance of the scaffold is 1.0m, the sweeping rod is arranged at a position which is not more than 20cm away from the ground, and the step distance of the longitudinal and transverse horizontal rods is not more than 1.5m.
The process of installing the box culvert side plate 102 template specifically comprises: the box culvert side plate 102 template adopts a 15mm thick wood glue plate, the outer side template of the box culvert side plate 102 is erected through a wood pile driving mould, the inner side template of the box culvert side plate 102 is erected through a phi 22 steel pile pre-buried on the corresponding position of the box culvert bottom plate 101, the lower opening of the template leans against the box culvert bottom plate 101, the inner side template and the outer side template are connected through split bolts, the lower opening of the template is tightly propped by a flat support on the outer side of the bottom of the side plate template, and the upper opening of the template is tightly propped by an inclined support on the outer side of the top of the side plate template.
Step seven, installing a box culvert top plate 103 template, and binding steel bars of the box culvert top plate 103;
the cast-in-situ roof template adopts a 15mm thick wood plywood, the roof bearing template cannot be supported on the side plate template, but is provided with a supporting system, and the template is designed by considering the following combination of loads: the gravity of the template, the gravity of the newly poured concrete, the gravity of the steel bars and the embedded parts, the gravity of the staff and the warehouse surface machine tools, the load generated during concrete vibrating, the lateral pressure of the newly poured concrete, the floating force of the newly poured concrete, the load generated during concrete discharging and the like. Before binding the steel bars of the cast-in-situ top plate, the positions of the steel bars are controlled by an ink-ejecting line on the bottom die, the binding requirements and the steel bars of the bottom plate are met, whether the steel numbers, the diameters, the numbers and the distances of the steel bars are correct or not is checked according to a design drawing, particularly, the positions of the steel bars are checked, whether the positions and the lap joint lengths of the steel bar joints meet the regulations or not is checked, whether a concrete protection layer meets the requirements is checked, whether the binding of the steel bars is firm or not is checked, and the phenomenon of loosening and deformation exists or not is checked.
Pouring box culvert side plates 102 and roof concrete;
the process of pouring the box culvert side plate 102 and the top plate concrete specifically comprises the following steps: the concrete pouring of the box culvert side plates 102 and the top plate is carried out twice, the concrete of the side plates is poured for the first time, the concrete is poured to the position of 30cm upwards from the chamfer angle of the bottom plate, the concrete strength reaches more than 90% of the design strength, the twice-poured joint surface is treated according to the working seam, the symmetrical blanking pouring of the two side plates is carried out during the second pouring, the phenomenon that the stress of the template is unbalanced and the phenomenon of unsmooth is generated is prevented, the top-mold concrete pouring firstly adopts a vibrating rod for vibrating, and then adopts a flat plate vibrator for re-vibrating for one time, and the surface concrete is subjected to light receiving and napping treatment.
Step nine, dismantling scaffolds, backfilling earthwork on two sides of the box culvert 1, attaching a face to the end wall of the box culvert 1, paving a pavement layer 3 on the top of the box culvert 1, and arranging railings 4 on two sides of the pavement on the top of the pavement layer 3.
In the construction of the embodiment, the construction process is simple to operate, and the drainage box culvert 1 constructed by the process has the advantages that the foundation structure is stable because the drainage box culvert 1 is constructed on the concrete cushion layer 2, the uneven settlement of the foundation is not easy to occur, and the constructed box culvert 1 meets the functional requirements of traffic, water passing and the like.
In another embodiment, the first time the side panel concrete is poured, the top surface of the concrete is poured into a tongue-and-groove configuration.
In the former embodiment, the cast-in-place box culvert 1 adopts a twice casting process, shrinkage joints are easily generated between cast-in-place concrete and cast-in-place concrete, so that water flows leak into embankments 5 on two sides of the box culvert 1 when the box culvert 1 drains, and uneven settlement is generated on the embankments 5.
In another embodiment, a water stop plate 6 is preset in a template when the side plate concrete is poured for the first time, so that the water stop plate 6 is pre-buried in the formed box culvert side plate 102, the water stop plate 6 is arranged in the middle of a tongue-and-groove on the top surface of the concrete, the water stop plate 6 comprises a polyurethane plate body 601 and a heat transfer water guide line 602 which is arranged in the polyurethane plate body 601 and is interwoven in a warp-weft mode, the heat transfer water guide line 602 comprises a metal wire core and water guide fibers wound outside the metal wire core, and the heat transfer water guide line 602 in the warp direction in the water stop plate 6 extends from the upper end of the water stop plate 6 to a concrete pouring area of the box culvert top plate 103;
the box culvert roof 103 concrete placement area is provided with a ventilation pipe 7 along the trend of the box culvert 1 hole, the ventilation pipe 7 is positioned above the water stop plate 6, and then the heat transfer water guide line 602 penetrates into the ventilation pipe 7 from the bottom of the ventilation pipe 7, so that after the box culvert side plate 102 and the roof are placed and molded, water absorbed by the heat transfer water guide line 602 is taken away by flowing air in the ventilation hole and leaked from the rabbet, and a wire core of the heat transfer water guide line 602 penetrates through the ventilation pipe and is connected with a steel bar of the box culvert roof 103, so that heat in the box culvert roof 103 is conducted to the wire core of the heat transfer water guide line 602 through the steel bar, and evaporation of the water absorbed in the water guide fiber is accelerated.
According to the embodiment, the water stop plate 6 is embedded in the box culvert side plate 102, the heat transfer water guide line 602 in the water stop plate 6 is provided with the metal wire core and has certain mechanism strength, so that attachment can be provided for the water guide fiber, the water guide fiber can form a water absorption path from the bottom to the top of the water stop plate 6, the metal wire core is ductile and can be bent, so that the metal wire core can be connected with the steel bars of the box culvert top plate 103, the metal heat conductivity is better, heat in the box culvert top plate 103 is conducted to the wire core of the heat transfer water guide line 602 through the steel bars, the polyurethane plate body is good in waterproof capacity, meanwhile, the heat preservation capability is also provided, evaporation of water absorbed in the water guide fiber can be accelerated, the evaporated water vapor is taken away from the air pipe 7, the water concentration at the upper part of the heat transfer water guide line 602 is low, the water at the lower end of the heat transfer water guide line 602 can be continuously absorbed and discharged by the source, adverse effects of the water on the two sides of the box culvert 1 on the road dykes 5 are avoided, and the land road surface and the road surface is connected with the road surface at the top of the box culvert 1 is ensured to be even. Further, since the metal core has conductivity, evaporation of water can be accelerated by transmitting heat to the metal core.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. The drainage box culvert construction process is characterized by comprising the following steps of:
step one, cleaning a field;
step two, measuring and lofting;
step three, excavating box culvert base grooves;
installing a concrete cushion template and pouring a concrete cushion;
step five, manufacturing box culvert bottom plate steel bars, installing box culvert bottom plate templates and pouring box culvert bottom plate concrete:
step six, erecting a scaffold, installing a box culvert side plate template, and binding box culvert side plate reinforcing steel bars;
step seven, installing a box culvert top plate template and binding box culvert top plate reinforcing steel bars;
pouring box culvert side plates and roof concrete;
step nine, dismantling the scaffold, backfilling earthwork on two sides of the box culvert, veneering an end wall of the box culvert, paving a pavement layer on the top of the box culvert, and arranging railings on two sides of the pavement on the top of the pavement layer.
2. The drainage box culvert construction process of claim 1, wherein the process of installing the concrete cushion template and pouring the concrete cushion in the fourth step specifically comprises the following steps: the concrete cushion template adopts a wood die, the height of the template is the same as the thickness of the concrete cushion, the top surface of the template is flush with the top surface of the concrete slab and is consistent with the design elevation, and the bottom surface of the template is tightly attached to the bottom surface of the foundation pit; the cushion layer is formed by pouring concrete with the strength grade of C30 and the freezing resistance grade of F50 and is continuously poured without a construction joint, after the concrete pouring is finished, the outer surface of the concrete is scraped, the outer surface is cleaned, the concrete is compacted and is polished after the water is collected, the curing can be covered after the initial setting, and the mold can be removed after the concrete pouring is finished for 24 hours.
3. The drainage box culvert construction process of claim 2, wherein the process of manufacturing the box culvert bottom plate steel bar in the fifth step comprises the following steps: checking the standards, grades and the processing quantity of the reinforcing bars, blanking according to a batching list after checking, carrying out a first processing test on the reinforcing bars with the same batch of the same type of size, and then processing in batches after checking to be qualified.
4. The drainage box culvert construction process of claim 1, wherein the process of installing the box culvert bottom plate template in the fifth step comprises the following steps: ejecting a vertical mould line on the concrete cushion layer by using an ink fountain; driving wood piles on the outer side of the vertical mould line, wherein the distance between the wood piles is 60 cm-120 cm, and the height of the exposed ground part of the wood piles is not less than 30cm; when the side mould of the bottom plate is erected, the lower opening of each mould plate is tightly attached to the vertical mould line, the mould plate is erected and the mould is nailed at the same time, the crosspiece is positioned at the position 20mm away from the upper opening and the lower opening of the mould plate, all the overlapped positions with the vertical mould are connected by using iron nails in a floating nail method, and the iron nails are not shorter than 75mm; the flat support length of the bottom plate side mould is subjected to grain ink breaking between the lower crosspiece and the wood pile, so that the template is ensured to be clung to a vertical mould line, and the support is firmly connected with the lower crosspiece and the wood pile by using floating nails; when the diagonal bracing is added, the upper end of the diagonal bracing is propped against the upper crosspiece, iron nails are added for connection, then a wooden wedge is added between the lower end of the diagonal bracing and the wooden piles, the perpendicularity of the inner face of the bottom plate side die is adjusted by the wooden die, and after the positive template is hung by a wire, the diagonal bracing, the template and the wooden piles are locked by the iron nails.
5. The drainage box culvert construction process of claim 1, wherein the process of pouring box culvert bottom plate concrete in the fifth step specifically comprises the following steps: and (3) adopting commercial concrete, pouring by adopting a concrete pump truck after the commercial concrete is sent to a pouring place, and determining the maximum allowable time from paving, vibrating and leveling to pouring by a laboratory according to the cement initial setting time and the construction air temperature.
6. The drainage box culvert construction process of claim 1, wherein the step six of erecting the scaffold specifically comprises the following steps: the method comprises the steps of leveling a field, positioning and arranging a through long upright rod base plate, discharging a longitudinal sweeping rod, erecting an upright rod, fastening the longitudinal sweeping rod with the upright rod, installing a transverse sweeping rod, installing a longitudinal horizontal rod, installing a transverse horizontal rod, binding a safety net, paving a scaffold board on an operation layer, wherein the scaffold adopts a full-hall frame, the longitudinal distance of the scaffold is 1.5m, the transverse distance of the scaffold is 1.0m, the sweeping rod is arranged at a position which is not more than 20cm away from the ground, and the step distance of the longitudinal and transverse horizontal rods is not more than 1.5m.
7. The drainage box culvert construction process of claim 1, wherein the process of installing the box culvert side plate template in the sixth step specifically comprises the following steps: the box culvert side plate template adopts a 15mm thick wood glue plate, the box culvert side plate outside template is erected through a wood pile driving mould, the box culvert side plate inside template is erected through a phi 22 steel pile pre-buried on the corresponding position of the box culvert bottom plate, the lower opening of the template leans against the box culvert bottom plate, the inner template and the outer template are connected through split bolts, the lower opening of the template is propped against by a flat support on the outer side of the bottom of the side plate template, and the upper opening of the template is propped against by an inclined support on the outer side of the top of the side plate template.
8. The drainage box culvert construction process of claim 1, wherein the process of pouring the concrete of the box culvert side plate and the top plate in the eighth step specifically comprises the following steps: the concrete pouring of the box culvert side plates and the top plate is carried out twice, the concrete of the side plates is poured for the first time, the concrete is poured to the position of 30cm upwards from the chamfer angle of the bottom plate, the concrete strength reaches more than 90% of the design strength, the twice-poured joint surface is treated according to the working seam, the symmetrical blanking pouring of the two side plates is carried out during the second pouring, the phenomenon that the stress of the template is unbalanced and the phenomenon of unsmooth is generated is prevented, the top-mold concrete pouring firstly adopts a vibrating rod to vibrate, and then a flat plate vibrator is adopted to re-vibrate for one time, so that the surface concrete is subjected to light receiving and napping treatment.
9. The drainage box culvert construction process of claim 8 wherein the concrete top surface is poured into a tongue-and-groove configuration when the side panel concrete is poured for the first time.
10. The drainage box culvert construction process of claim 9, wherein a water stop plate is preset in a template when the side plate concrete is poured for the first time, so that the water stop plate is pre-buried in the formed box culvert side plate, the water stop plate is arranged in the middle of a tongue-and-groove on the top surface of the concrete, the water stop plate comprises a polyurethane plate body and a heat transfer water guide line which is arranged in the polyurethane plate body and is interwoven in a warp-weft mode, the heat transfer water guide line comprises a metal wire core and water guide fibers wound outside the metal wire core, and the heat transfer water guide line in the warp direction in the water stop plate extends from the upper end of the water stop plate to a box culvert top plate concrete pouring area;
the box culvert roof concrete placement area sets up the ventilation pipe along box culvert hole trend, the ventilation pipe is located the stagnant water board top, will transfer heat and lead the waterline to penetrate in the ventilation pipe from the ventilation pipe bottom again to make box culvert curb plate and roof pour the shaping after, flow the air in the ventilation hole and take away the absorbed seepage moisture of from the tongue-and-groove of transfer heat lead the waterline, still be connected the sinle silk of waterline and box culvert roof reinforcing bar, so that the heat in the box culvert roof is conducted to the sinle silk of transfer heat lead the waterline through this reinforcing bar, thereby accelerate the evaporation of the absorbed moisture in the water guide fibre.
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