CN114439291B - Column type inspection pit cast-in-place concrete track column and construction method - Google Patents
Column type inspection pit cast-in-place concrete track column and construction method Download PDFInfo
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- CN114439291B CN114439291B CN202210090132.2A CN202210090132A CN114439291B CN 114439291 B CN114439291 B CN 114439291B CN 202210090132 A CN202210090132 A CN 202210090132A CN 114439291 B CN114439291 B CN 114439291B
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- 238000010276 construction Methods 0.000 title claims abstract description 61
- 238000007689 inspection Methods 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 151
- 239000010959 steel Substances 0.000 claims abstract description 151
- 238000007493 shaping process Methods 0.000 claims abstract description 67
- 239000000758 substrate Substances 0.000 claims abstract description 51
- 241000282326 Felis catus Species 0.000 claims abstract description 25
- 238000009412 basement excavation Methods 0.000 claims abstract description 21
- 238000009415 formwork Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 8
- 239000004571 lime Substances 0.000 claims description 8
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 210000003205 muscle Anatomy 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000009193 crawling Effects 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/06—Pits or building structures for inspection or services
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/008—Drainage of track
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention provides a column type inspection pit cast-in-place concrete track column and a construction method, wherein the column type inspection pit cast-in-place concrete track column comprises a fully-hardened cushion layer, a substrate drainage ditch adopts an integrated all-steel template, and a shaping cat ladder is adopted; a rapid formwork supporting system for the precast tubular pile caps; the cast-in-place concrete track column template system adopts a unit type quick dismounting opposite bracing steel pipe connection reinforcing shaping steel template system, and cast-in-place concrete track column concrete pouring adopts a winch traction rail type material conveying pouring system; the main construction steps comprise: the method comprises the steps of (1) measuring and paying off, (2) cutting and crushing a cushion layer, (3) earth excavation, (4) base drainage ditch construction, (5) foundation cushion layer construction, (6) tubular pile cap construction, (7) raft foundation construction, (8) track column construction and (9) column bottom drainage ditch construction; the invention can effectively reduce engineering cost, can realize construction by a centralized prefabrication and on-site assembly method, accelerates construction speed, and can obtain better technical and economic benefits when applied to actual engineering.
Description
Technical Field
The invention relates to the field of track column construction, in particular to a column type inspection pit cast-in-place concrete track column and a construction method.
Background
With the acceleration of urban construction pace, central cities are continuously radiating to the periphery, the urgency of track traffic construction is also increasing, and enthusiasm for constructing urban track traffic in various places is gradually increased. As an important link of urban rail transit construction, the construction of the column type inspection pit rail in the parking garage is increasingly important due to high precision, compact construction period and high safety requirement. The improvement of various links such as rail transportation, rail frame, rail adjustment, pouring and the like in the construction process of the existing column type inspection pit is needed. The requirements of simplification, standardization and scientificalness are met as far as possible. So as to accelerate the construction progress, ensure the engineering quality and reduce the engineering cost. Meanwhile, a good guiding effect is provided for subway similar projects. The frame rail method is a common construction method of a column type inspection pit in a subway vehicle section, and has the advantages that the construction deviation of a rail can be eliminated in the concrete construction process of an integral ballast bed, and the construction error is effectively controlled within an allowable range.
Disclosure of Invention
The invention aims to provide the column type inspection pit cast-in-place concrete track column and the construction method, which can effectively reduce the engineering cost, realize the construction by a centralized prefabrication and on-site assembly method, accelerate the construction speed and obtain better technical and economic benefits when applied to actual engineering
In order to solve the technical problems, the invention provides a column type inspection pit cast-in-place concrete track column construction method, which comprises the following steps:
Step one, measuring and paying off: firstly, measuring and paying off by a measuring staff, paying off a side line according to the size, shape and position of an inspection pit or a tubular pile, marking with lime, taking a lime marking mark as an excavation contour line for pit bottom size, and piling a positioning pile outside the lime line;
Cutting and crushing the cushion layer: pouring a fully-hardened cushion layer, and cutting and crushing the fully-hardened cushion layer at the excavation position before excavation;
Step three, earth excavation: excavating foundation earthwork by adopting a mode of slope-releasing excavation by a small excavator and manual cooperation excavation; the standardized climbing ladder can be quickly spliced to be lengthened or shortened through the standardized climbing ladder access column type inspection pit;
Fourthly, constructing a substrate drainage ditch: the substrate drainage ditch is manufactured by adopting an integrated all-steel template, a bottom template and a side template of the integrated all-steel template are processed into a whole, a substrate grouting port is arranged on the bottom template, and a side template grouting port is arranged on the upper part of the side template; the substrate drainage ditch end template and the integrated all-steel template form a substrate drainage ditch integral template, and the substrate drainage ditch is poured through a substrate grouting port and a side mold grouting port in sequence; the two sides of the first section of the foundation drainage ditch pouring integrated full steel template are provided with foundation drainage ditch end templates, the rest only needs to be provided with foundation drainage ditch end templates at one end of the integrated full steel template, and the other end is placed at the side of the poured foundation drainage ditch;
Step five, foundation cushion layer construction: the cushion pouring shaping steel template system is supported in the substrate drainage ditch on two sides of the cushion, and comprises at least two template support frames, an adjustable threaded rod, a fixed sleeve, clamping plates, side templates, end templates and steel drills, wherein the opposite sides of the two adjacent template support frames are connected with symmetrically arranged fixed sleeves, the clamping plates are arranged on the template support frames close to the cushion, and the clamping plates are positioned on one side of the template support frames far away from the fixed sleeves; placing a template support in the substrate drainage ditch, enabling the outer side face of the template support to be attached to the inner side wall of the substrate drainage ditch, respectively placing two ends of an adjustable threaded rod in fixed sleeves on two adjacent template support, placing a side template on a clamping plate, enabling the template support to be attached to the inner side wall of the substrate drainage ditch by adjusting the length of the adjustable threaded rod, and further clamping and fixing the side template through the template support and the inner side wall of the substrate drainage ditch; the end templates are connected with side templates at one side of two adjacent template brackets through steel bars, and cushion layer concrete is poured after the cushion layer pouring and shaping steel template system is erected;
Step six, pile cap construction of the pipe pile: the rapid formwork supporting system for the precast tubular pile cap comprises a pile cap steel formwork, a formwork upright post, a steel pipe sleeve, precast tubular pile reserved reinforcing steel bars, an L-shaped adjustable threaded rod and an enlarged supporting plate; the outer side of the pile cap steel template is connected with a template upright post, the lower part of the template upright post is connected with an expansion supporting plate, the upper part of the template upright post is fixed with an L-shaped adjustable threaded rod through a bolt, one end of the L-shaped adjustable threaded rod, which is far away from the pile cap steel template, is connected with a steel pipe sleeve, and a preformed pile reserved steel bar is inserted into the steel pipe sleeve; pouring precast tubular pile cap concrete after the rapid formwork supporting system of the precast tubular pile cap is erected;
Seventh, raft foundation construction: firstly, installing a panel, then, installing secondary ribs, arranging temporary supports, installing split bolts and main ribs, adjusting and fastening, and finally, installing top supports and diagonal braces; a ground pump is adopted for concrete pouring;
Step eight, track column construction: the cast-in-place concrete track upright post template system comprises a shaping steel template unit and a unit type quick assembly and disassembly opposite-support steel pipe unit, wherein the shaping steel template unit comprises angle steel, an ear plate and a fixing hole, and after the shaping steel template unit is assembled, a plurality of shaping steel template units are fixed into a whole through the unit type quick assembly and disassembly opposite-support steel pipe unit; the top of the cast-in-place concrete track upright post is provided with a track beam which is fixed with the main rib of the cast-in-place concrete track upright post through a fixing fastener and a fastener sleeve;
The casting system comprises a hopper, a traction type track temporary support, a traction type track beam and a pulley, wherein the traction type track beam is connected to the upper part of the traction type track temporary support, the pulley is rotatably connected to the hopper, the pulley moves on the traction type track beam, the hopper moves to different shaping steel template unit positions along the traction type track beam, and casting of the cast-in-place concrete track column concrete is performed through the hopper;
Step nine, construction of a column bottom drainage ditch: and (3) constructing the post bottom drainage ditch by referring to the construction of the base drainage ditch, and performing backfill construction after the construction of the post bottom drainage ditch is completed.
The invention has the beneficial effects that:
1. The column type inspection pit cast-in-place concrete track column formwork component is prefabricated in factories, is high in construction speed, is assembled outside the site, improves the turnover rate of the formwork component and reduces the construction cost.
2. The column type inspection pit cast-in-place concrete track column formwork system is simple to operate, accelerates construction speed and saves labor.
3. The column type inspection pit cast-in-place concrete track column formwork supporting system is simple in structure, economical and effective, and construction quality of the column type inspection pit cast-in-place concrete track column is effectively guaranteed.
Drawings
FIG. 1 is a schematic elevation view of a column structure of a column inspection pit cast-in-place concrete track;
FIG. 2 is a base drain integral all steel form intent;
FIG. 3 is a schematic diagram of a template bulk sample of a base drain;
FIG. 4 is a schematic elevation view of a mat form;
FIG. 5 is a schematic diagram of a side-supported form of a underlayment form base drainage ditch;
FIG. 6 is a schematic plan view of a mat support;
FIG. 7 is a schematic elevation view of a precast tubular pile cap;
FIG. 8 is a schematic plan view of a precast tubular pile cap;
FIG. 9 is a schematic view of a modular ladder;
FIG. 10 is a schematic diagram of a modular ladder unit layout;
FIG. 11 is a schematic diagram of a rail post pre-buried bar finalized bracket bulk;
FIG. 12 is a schematic plan view of a column inspection pit cast-in-place concrete track column form and concrete placement;
FIG. 13 is a schematic elevation view of a column inspection pit cast-in-place concrete track column form and concrete placement;
FIG. 14 is a schematic diagram of a column inspection pit cast-in-place concrete track column form cross-section bulk;
FIG. 15 is a schematic diagram of a modular steel template unit layout;
Fig. 16 is a construction process flow diagram of the present invention.
In the figure: 1-prefabricated pipe piles, 2-base layers, 3-raft foundations, 4-base drainage ditches, 5-slope protection, 6-fully-hardened cushion layers, 7-cast-in-place concrete track posts, 8-post bottom drainage ditches, 9-backfill, 10-integrated full steel templates, 11-base grouting openings, 12-screws, 13-stay bars, 14-fixed lug plates with grooves, 15-base drainage ditch end templates, 16-adjustable threaded rods, 17-template support frames, 18-steel templates, 19-cushion layers, 20-fixed sleeves, 21-clamping plates, 22-template posts, 23-steel tube sleeves, 24-prefabricated pipe pile reserved steel bars, 25-L-shaped adjustable threaded rods, 26-expanded support plates, 27-end templates, 28-side mold grouting openings, 29-steel bars, 30-bolts, 31-shaping crawling ladders, 32-shaping crawling ladder units, 33-preformed holes, 34-concave heads, 35-convex heads, 36-threaded sleeves, 37-track column pre-embedded rib shaping supports, 38-hoppers, 39-traction type track temporary supports, 40-shaping steel template units, 41-track beams, 42-traction type track beams, 43-unit type quick dismounting opposite bracing steel pipe units, 44-fixing fasteners, 45-fastener sleeves, 46-pulleys, 47-angle steels, 48-lug plates, 49-fixing holes and 50-pile cap steel templates.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
The invention provides a method for constructing a column type inspection pit cast-in-place concrete track column, which comprises the following steps of:
Step one, measuring and paying off: firstly, measuring and paying off by a measuring staff, paying off a border line according to the size, shape and position of an inspection pit or a pipe pile, marking the border line by lime, taking the operation space of workers and arrangement of drainage ditches into consideration, paying out 50cm according to the outline, marking the border line by lime, taking the mark as an excavation outline, and piling locating piles at intervals of 10m at the position of 50cm outside the border line, so as to ensure the excavation gradient.
Cutting and crushing the cushion layer: and pouring the fully-hardened cushion layer 6, and cutting and crushing the fully-hardened cushion layer 6 at the excavation position before excavation, so as to meet the excavation conditions.
Step three, earth excavation: excavating foundation earthwork by adopting a mode of slope-releasing excavation by a small excavator and manual cooperation excavation; through the column type inspection hole that comes in and goes out of shaping cat ladder 31, shaping cat ladder 31 includes shaping cat ladder unit 32, preformed hole 33, concave head 34, protruding head 35, wherein shaping cat ladder unit 32 both ends set up concave head 34 respectively, protruding head 35 on concave head 34, protruding head 35 correspond to set up preformed hole 33, when adjacent two shaping cat ladder units 32 link to each other, through the preformed hole 33 on the concave head 34 of plug 30 with one of them shaping cat ladder unit 32 with the preformed hole 33 on the protruding head 35 of another shaping cat ladder unit 32 be connected, and then make shaping cat ladder 31 can splice extension fast or tear open the weak point.
Fourthly, constructing a substrate drainage ditch: the substrate drainage ditch 4 is manufactured by adopting an integrated all-steel template 10, the bottom template and the side template of the integrated all-steel template 10 are processed into a whole in a factory, a substrate grouting opening 11 is arranged on the bottom template, and a side template grouting opening 28 is arranged on the upper part of the side template; the base drainage ditch end templates 15 are welded and connected with the fixed lug plates 14 with the grooves, the fixed lug plates 14 with the grooves are placed on the screw rods 12 of the integrated full steel templates 10 and fixed through bolts, the screw rods 12 vertically penetrate through the side surfaces of the two ends of the side templates of the integrated full steel templates 10, and the opening positions of the two ends of the integrated full steel templates 10 are blocked by the base drainage ditch end templates 15, so that the base drainage ditch end templates 15 and the integrated full steel templates 10 form an integrated base drainage ditch template, and the base drainage ditch 4 is poured through the base grouting openings 11 and the side mold grouting openings 28 in sequence; the two sides of the first-section pouring integrated all-steel template 10 of the substrate drainage ditch 4 are provided with substrate drainage ditch end templates 15, the rest only needs to be provided with the substrate drainage ditch end templates 15 at one end of the integrated all-steel template 10, and the other end is placed at the side of the poured substrate drainage ditch;
Step five, foundation cushion layer construction: the foundation ditch 4 is supported at two sides of the foundation ditch 19 by a cushion layer 19 pouring and shaping steel template system, the foundation ditch 19 pouring and shaping steel template system comprises at least two template support frames 17, adjustable threaded rods 16, fixed sleeves 20, clamping plates 21, side templates 18, end templates 27 and steel drills 29, wherein the opposite sides of two adjacent template support frames 17 are welded and connected with symmetrically arranged fixed sleeves 20, the clamping plates 21 are arranged on the template support frames 17 close to the cushion layer 19, and the clamping plates 21 are positioned at one side, far away from the fixed sleeves 20, of the template support frames 17; placing a template support frame 17 in the substrate drainage ditch 4, enabling the outer side surface of the template support frame 17 to be attached to the inner side wall of the substrate drainage ditch 4, respectively placing two ends of an adjustable threaded rod 16 in fixed sleeves 20 on two adjacent template support frames 17, placing a side template 18 on a clamping plate 17, enabling the template support frame 17 to be attached to the inner side wall of the substrate drainage ditch 4 by adjusting the length of the adjustable threaded rod 16, and further clamping and fixing the side template 18 through the template support frame 17 and the inner side wall of the substrate drainage ditch 4; the end templates 27 are connected with the side templates 18 on one side of the two adjacent template brackets 17 through steel bars 29, so that the end templates 27 and the side templates 18 form a rectangular frame, and after the cushion layer 19 pouring and shaping steel template system is supported, the cushion layer 19 concrete is poured in the rectangular frame formed by the end templates 27 and the side templates 18.
Step six, pile cap construction of the pipe pile: the prefabricated pipe pile 1 pile cap rapid formwork system comprises a pile cap steel formwork 50, a formwork upright 22, a steel pipe sleeve 23, prefabricated pipe pile reserved steel bars 24, an L-shaped adjustable threaded rod 25 and an enlarged supporting plate 26, and the parts are manufactured in factories; the outside of the pile cap steel template 50 is welded with a template upright post 22, the lower part of the template upright post 22 is welded with an enlarged supporting plate 26, the upper part of the template upright post 22 is fixed with an L-shaped adjustable threaded rod 25 through a bolt, the length of the L-shaped adjustable threaded rod 25 is adjusted according to the position of the pile cap steel template 50, one end of the L-shaped adjustable threaded rod 25, which is far away from the pile cap steel template 50, is connected with a steel pipe sleeve 23, and a precast pile reserved steel bar 24 is inserted into the steel pipe sleeve 23; and pouring concrete of the pile cap of the precast tubular pile 1 after the rapid formwork supporting system of the pile cap of the precast tubular pile 1 is erected.
Seventh, raft foundation construction: the template is firstly subjected to panel installation, then secondary rib installation is carried out, temporary supports are arranged, split bolts and main ribs are installed, adjustment and fastening are carried out, and finally top supports and diagonal braces are installed; the raft concrete strength grade is C40, the impervious grade is P6, commercial concrete is adopted as concrete, and a ground pump is adopted for concrete pouring; before the concrete construction, procedures such as binding of reinforcing steel bars, position of embedded parts and embedded pipes, reinforcement of templates and the like are required to be checked and accepted, and concrete pouring can be performed at the rear.
Step eight, track column construction: the cast-in-place concrete track column 7 template system comprises a shaping steel template unit 40 and a unit type quick assembly and disassembly opposite supporting steel pipe unit 43, wherein the shaping steel template unit 40 comprises angle steel 47, an ear plate 48 and a fixing hole 49, and after the shaping steel template unit 40 is assembled, a plurality of shaping steel template units 40 are fixed into a whole through the unit type quick assembly and disassembly opposite supporting steel pipe unit 43; the top of the cast-in-place concrete track column 7 is provided with a track beam 41, and the track beam 41 is fixed with the main rib of the cast-in-place concrete track column 7 through a fixing fastener 44 and a fastener sleeve 45.
The cast-in-place concrete track column 7 concrete pouring adopts a winch traction track running type material conveying pouring system, the pouring system comprises a hopper 38, a traction type track temporary support 39, a traction type track beam 42 and pulleys 46, the traction type track temporary support 39 is manufactured in a factory, the traction type track beam 42 can be quickly assembled and disassembled, the upper part of the traction type track temporary support 39 is connected with the traction type track beam 42, the pulleys 46 are rotatably connected with the hopper 38, the pulleys 46 move on the traction type track beam 42, the hopper 38 moves to different shaping steel template units 40 along the traction type track beam 42, and the cast-in-place concrete track column 7 concrete pouring is performed through the hopper 38.
Step nine, construction of a column bottom drainage ditch: and (3) constructing the post bottom drainage ditch by referring to the construction of the base drainage ditch, and performing backfill construction after the construction of the post bottom drainage ditch is completed.
The invention also discloses a column type inspection pit cast-in-place concrete track column, which comprises a fully hardened cushion layer 6 arranged on the upper side of a base layer 2, base drainage ditches 4 arranged on two sides of the lower part of the base layer 2, wherein the base drainage ditches 4 are made of integrated all-steel templates 10, a cushion layer 19 is poured and shaped steel template system is supported in the base drainage ditches 4 on two sides of the cushion layer 19, and an access column type inspection pit is quickly lengthened or shortened through a shaping crawling ladder 31; a pile cap rapid formwork supporting system of the prefabricated pipe pile 1; the cast-in-place concrete track column 7 template system adopts a unit type rapid disassembly and assembly opposite supporting steel pipe connection reinforcing and shaping steel template system; and the cast-in-place concrete track column 7 adopts a winch to pull the rail-mounted material conveying casting system.
The substrate drainage ditch 4 is manufactured by adopting an integrated all-steel template 10, a bottom template and a side template of the integrated all-steel template 10 are processed into a whole in a factory, a substrate grouting opening 11 is arranged on the bottom template, and a side template grouting opening 28 is arranged on the upper part of the side template; the base drainage ditch end templates 15 are welded and connected with the fixed lug plates 14 with the grooves, the fixed lug plates 14 with the grooves are placed on the screw rods 12 of the integrated full steel templates 10 and fixed through bolts, the screw rods 12 vertically penetrate through the side surfaces of the two ends of the side templates of the integrated full steel templates 10, and the opening positions of the two ends of the integrated full steel templates 10 are blocked by the base drainage ditch end templates 15, so that the base drainage ditch end templates 15 and the integrated full steel templates 10 form an integrated base drainage ditch template, and the base drainage ditch 4 is poured through the base grouting openings 11 and the side mold grouting openings 28 in sequence; the two sides of the first-section pouring integrated all-steel template 10 of the substrate drainage ditch 4 are provided with substrate drainage ditch end templates 15, the rest only needs to be provided with the substrate drainage ditch end templates 15 at one end of the integrated all-steel template 10, and the other end is placed at the side of the poured substrate drainage ditch; through the column type inspection hole that comes in and goes out of shaping cat ladder 31, shaping cat ladder 31 includes shaping cat ladder unit 32, preformed hole 33, concave head 34, protruding head 35, wherein shaping cat ladder unit 32 both ends set up concave head 34 respectively, protruding head 35 on concave head 34, protruding head 35 correspond to set up preformed hole 33, when adjacent two shaping cat ladder units 32 link to each other, through the preformed hole 33 on the concave head 34 of plug 30 with one of them shaping cat ladder unit 32 with the preformed hole 33 on the protruding head 35 of another shaping cat ladder unit 32 be connected, and then make shaping cat ladder 31 can splice extension fast or tear open the weak point.
Specifically, at least two preformed holes 33 are formed in the raised head 35 and the recessed head 34, so that when the raised head 35 and the recessed head 34 are connected through the preformed holes 33, the horizontal position between the raised head 35 and the recessed head 34 can be ensured through the at least two preformed holes 33.
The cushion layer 19 pouring and shaping steel template system is supported in the substrate drainage ditch 4 at two sides of the cushion layer 19, the cushion layer 19 pouring and shaping steel template system comprises at least two template support frames 17, an adjustable threaded rod 16, a fixed sleeve 20, a clamping plate 21, side templates 18, end templates 27 and steel drills 29, wherein the opposite sides of two adjacent template support frames 17 are welded and connected with symmetrically arranged fixed sleeves 20, the clamping plate 21 is arranged on the template support frame 17 close to the cushion layer 19, and the clamping plate 21 is positioned at one side of the template support frame 17 far away from the fixed sleeves 20; placing a template support frame 17 in the substrate drainage ditch 4, enabling the outer side surface of the template support frame 17 to be attached to the inner side wall of the substrate drainage ditch 4, respectively placing two ends of an adjustable threaded rod 16 in fixed sleeves 20 on two adjacent template support frames 17, placing a side template 18 on a clamping plate 21, enabling the template support frame 17 to be attached to the inner side wall of the substrate drainage ditch 4 by adjusting the length of the adjustable threaded rod 16, and further clamping and fixing the side template 18 through the template support frame 17 and the inner side wall of the substrate drainage ditch 4; the end templates 27 are connected with the side templates 18 on one side of the two adjacent template brackets 17 through steel bars 29, so that the end templates 27 and the side templates 18 form a rectangular frame, and after the cushion layer 19 is supported by the pouring and shaping steel template system, concrete is poured into the rectangular frame formed by the end templates 27 and the side templates 18 to form the cushion layer 19.
Specifically, the end form 27 and the outside of the sideform 18 are wound by the steel rods 29, so that the steel rods 29 are wound to fix the rectangular frame formed by the end form 27 and the sideform 18.
The rapid pile cap formwork system for the prefabricated pipe pile 1 comprises a pile cap steel template 50, a template upright post 22, a steel pipe sleeve 23, prefabricated pipe pile reserved steel bars 24, an L-shaped adjustable threaded rod 25 and an enlarged supporting plate 26, and the parts are processed and manufactured in factories; the outside of the pile cap steel template 50 is welded with a template upright post 22, the lower part of the template upright post 22 is welded with an enlarged supporting plate 26, the upper part of the template upright post 22 is fixed with an L-shaped adjustable threaded rod 25 through a bolt, the length of the L-shaped adjustable threaded rod 25 is adjusted according to the position of the pile cap steel template 50, one end of the L-shaped adjustable threaded rod 25, which is far away from the pile cap steel template 50, is connected with a steel pipe sleeve 23, and a precast pile reserved steel bar 24 is inserted into the steel pipe sleeve 23; and pouring concrete of the pile cap of the precast tubular pile 1 after the rapid formwork supporting system of the pile cap of the precast tubular pile 1 is erected.
It should be noted that, before pouring the precast tubular pile 1, the pouring position of the precast tubular pile 1 needs to be set up at the corresponding positions of the base layer 2 and the cushion layer 19, so that the precast tubular pile 1 is poured through the fast formwork system of the pile cap of the precast tubular pile 1.
The track column pre-buried bar shaping support 37 is manufactured in a factory according to the size of the cast-in-place concrete track column 7, the thread sleeve 36 on the track column pre-buried bar shaping support 37 corresponds to the main bar position of the cast-in-place concrete track column 7 one by one, and the accurate positioning and quick installation of the main bar of the cast-in-place concrete track column 7 can be realized; the track column pre-buried bar shaping support 37 is welded and connected to 3 steel bars of the raft foundation.
Specifically, when using the pre-buried muscle of track stand design support 37, establish track stand pre-buried muscle design support 37 cover to cast in situ concrete track stand 7 periphery to correspond with cast in situ concrete track stand 7 main muscle through screw sleeve 36 and be connected, and then increase cast in situ concrete track stand 7 circumferential stability through the pre-buried muscle of track stand design support 37.
The template system of the cast-in-place concrete track upright post 7 comprises a shaping steel template unit 40 and a unit type quick assembly and disassembly opposite supporting steel pipe unit 43, wherein the shaping steel template unit 40 comprises angle steel 47, an ear plate 48 and a fixing hole 49, and after the shaping steel template unit 40 is assembled, a plurality of shaping steel template units 40 are fixed into a whole through the unit type quick assembly and disassembly opposite supporting steel pipe unit 43; the top of the cast-in-place concrete track column 7 is provided with a track beam 41, and the track beam 41 is fixed with the main rib of the cast-in-place concrete track column 7 through a fixing fastener 44 and a fastener sleeve 45.
Specifically, the shaped steel template unit 40 further includes a plurality of side templates 18, the angle steels 47 and the ear plates 48 are respectively located at two ends of the side templates 18, and fixing holes 49 are formed in the angle steels 47 and the ear plates 48, wherein the angle steels 47 on one side template 18 and the ear plates 48 on the other side template 18 of two adjacent side templates 18 are connected through the fixing holes 49 in cooperation with bolts, so that the side templates 18 are connected end to form a square frame.
In addition, the unit type quick assembly disassembly is to propping up the steel pipe unit 43 including setting up in the grip block of shaping steel form unit 40 both sides, be used for connecting the steel pipe of propping up of adjacent two grip blocks, prop up and be connected through the bolt between steel pipe and the grip block, after fixing to propping up steel pipe and the grip block, carry out spacingly to a plurality of shaping steel form units 40 in the middle through both sides grip block, and then make a plurality of shaping steel form units 40 form wholly.
The cast-in-place concrete track column 7 concrete pouring adopts a winch traction track running type material conveying pouring system, the pouring system comprises a hopper 38, a traction track temporary support 39, a traction track beam 42 and pulleys 46, the traction track temporary support 39 is manufactured in a factory, the traction track beam 42 can be quickly assembled and disassembled, the upper part of the traction track temporary support 39 is connected with the traction track beam 42, the pulleys 46 are rotatably connected with the hopper 38, the pulleys 46 move on the traction track beam 42, the hopper 38 moves to different shaping steel template units 40 along the traction track beam 42, and the cast-in-place concrete track column 7 concrete pouring is performed through the hopper 38.
Specifically, concrete is carried in the hopper 38, and after the hopper 38 is moved to different positions of the shaping steel template units 40, the concrete in the hopper 38 is poured into the shaping steel template units 40 through external pouring equipment to form the cast-in-place concrete track upright 7.
The present application is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present application can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present application fall within the scope of the present application.
Claims (8)
1. The construction method of the column type inspection pit cast-in-place concrete track column is characterized by comprising the following steps of:
Step one, measuring and paying off: firstly, measuring and paying off by a measuring staff, paying off a side line according to the size, shape and position of an inspection pit or a tubular pile, marking with lime, taking a lime marking mark as an excavation contour line for pit bottom size, and piling a positioning pile outside the lime line;
Cutting and crushing the cushion layer: pouring a fully-hardened cushion layer (6), and cutting and crushing the fully-hardened cushion layer (6) at the excavation position before excavation;
Step three, earth excavation: excavating foundation earthwork by adopting a mode of slope-releasing excavation by a small excavator and manual cooperation excavation; the shaped cat ladder (31) can be quickly spliced to be lengthened or shortened through the entering and exiting column type inspection pit of the shaped cat ladder (31);
Fourthly, constructing a substrate drainage ditch: the substrate drainage ditch (4) is manufactured by adopting an integrated full steel template (10), a bottom template and a side template of the integrated full steel template (10) are processed into a whole, a substrate grouting opening (11) is arranged on the bottom template, and a side template grouting opening (28) is arranged on the upper part of the side template; the substrate drainage ditch end template (15) and the integrated full steel template (10) form a substrate drainage ditch integral template, and the substrate drainage ditch (4) is poured through the substrate grouting opening (11) and the side mold grouting opening (28) in sequence; the two sides of the first section of the substrate drainage ditch (4) pouring integrated full steel template (10) are provided with substrate drainage ditch end templates (15), the rest only needs to be provided with the substrate drainage ditch end templates (15) at one end of the integrated full steel template (10), and the other end is placed at the side of the poured substrate drainage ditch;
Step five, foundation cushion layer construction: the cushion layer (19) is poured and shaped into the substrate drainage ditch (4) at two sides of the cushion layer (19), the cushion layer (19) is poured and shaped into the steel form system, the steel form system comprises at least two form support frames (17), an adjustable threaded rod (16), a fixed sleeve (20), a clamping plate (21), a side form (18), an end form (27) and a steel drill (29), wherein the opposite sides of the two adjacent form support frames (17) are connected with symmetrically arranged fixed sleeves (20), the clamping plate (21) is arranged on the form support frame (17) close to the cushion layer (19), and the clamping plate (21) is positioned at one side, far away from the fixed sleeves (20), of the form support frames (17); placing a template support frame (17) in the substrate drainage ditch (4), enabling the outer side face of the template support frame (17) to be attached to the inner side wall of the substrate drainage ditch (4), respectively placing two ends of an adjustable threaded rod (16) in fixed sleeves (20) on two adjacent template support frames (17), placing side templates (18) on the clamping plates, enabling the template support frames (17) to be attached to the inner side wall of the substrate drainage ditch (4) by adjusting the length of the adjustable threaded rod (16), and further clamping and fixing the side templates (18) through the template support frames (17) and the inner side wall of the substrate drainage ditch (4); the end templates (27) are connected with side templates (18) at one side of two adjacent template brackets (17) through steel bars (29), and after the cushion layer (19) is cast and set to form a steel template system, the cushion layer (19) is cast with concrete;
Step six, pile cap construction of the pipe pile: the pile cap rapid formwork system of the prefabricated pipe pile (1) comprises a pile cap steel formwork (50), a formwork upright post (22), a steel pipe sleeve (23), prefabricated pipe pile reserved steel bars (24), an L-shaped adjustable threaded rod (25) and an expansion supporting plate (26); the outside of the pile cap steel template (50) is connected with a template upright post (22), the lower part of the template upright post (22) is connected with an enlarged supporting plate (26), the upper part of the template upright post (22) is fixed with an L-shaped adjustable threaded rod (25) through a bolt, one end of the L-shaped adjustable threaded rod (25) far away from the pile cap steel template (50) is connected with a steel pipe sleeve (23), and a prefabricated pipe pile reserved steel bar (24) is inserted into the steel pipe sleeve (23); pouring pile cap concrete of the prefabricated pipe pile (1) after the rapid formwork supporting system of the pile cap of the prefabricated pipe pile (1) is supported;
Seventh, raft foundation construction: firstly, installing a panel, then, installing secondary ribs, arranging temporary supports, installing split bolts and main ribs, adjusting and fastening, and finally, installing top supports and diagonal braces; a ground pump is adopted for concrete pouring;
step eight, track column construction: the cast-in-place concrete track upright post (7) template system comprises a shaping steel template unit (40) and a unit type quick-assembling and disassembling opposite-supporting steel pipe unit (43), wherein the shaping steel template unit (40) comprises angle steel (47), an ear plate (48) and a fixing hole (49), and after the shaping steel template unit (40) is assembled, a plurality of shaping steel template units (40) are fixed into a whole through the unit type quick-assembling and disassembling opposite-supporting steel pipe unit (43); the top of the cast-in-place concrete track column (7) is provided with a track beam (41), and the track beam (41) is fixed with the main rib of the cast-in-place concrete track column (7) through a fixed fastener (44) and a fastener sleeve (45);
The concrete pouring of the cast-in-place concrete track column (7) adopts a winch traction track running type material conveying pouring system, the pouring system comprises a hopper (38), a traction track temporary support (39), a traction track beam (42) and a pulley (46), the traction track beam (42) is connected to the upper part of the traction track temporary support (39), the pulley (46) is rotatably connected to the hopper (38), the pulley (46) moves on the traction track beam (42), the hopper (38) moves to different shaping steel template units (40) along the traction track beam (42), and the cast-in-place concrete track column (7) concrete pouring is carried out through the hopper (38);
Step nine, construction of a column bottom drainage ditch: and (3) constructing the post bottom drainage ditch by referring to the construction of the base drainage ditch, and performing backfill construction after the construction of the post bottom drainage ditch is completed.
2. The method for constructing the column type inspection pit cast-in-place concrete track column according to claim 1, wherein the method comprises the following steps: the shaping cat ladder (31) comprises shaping cat ladder units (32), reserved holes (33), concave heads (34) and convex heads (35), wherein the concave heads (34) and the convex heads (35) are respectively arranged at two ends of each shaping cat ladder unit (32), the reserved holes (33) are correspondingly arranged on the concave heads (34) and the convex heads (35), and when two adjacent shaping cat ladder units (32) are connected, the reserved holes (33) on the concave heads (34) of one shaping cat ladder unit (32) are connected with the reserved holes (33) on the convex heads (35) of the other shaping cat ladder unit (32) through bolts (30).
3. The method for constructing the column type inspection pit cast-in-place concrete track column according to claim 1, wherein the method comprises the following steps: the base drainage ditch end templates (15) are connected with the fixed lug plates (14) with the grooves, the fixed lug plates (14) with the grooves are placed on the screw rods (12) of the integrated full steel templates (10) and are fixed through bolts, the screw rods (12) vertically penetrate through the side surfaces of the two ends of the side templates of the integrated full steel templates (10), and the opening positions of the two ends of the integrated full steel templates (10) are plugged through the base drainage ditch end templates (15).
4. The method for constructing the column type inspection pit cast-in-place concrete track column according to claim 1, wherein the method comprises the following steps: the end templates (27) and the side templates (18) form a rectangular frame, and the cushion layer (19) concrete is poured in the rectangular frame formed by the end templates (27) and the side templates (18).
5. The method for constructing the column type inspection pit cast-in-place concrete track column according to claim 1, wherein the method comprises the following steps: the raft concrete strength grade C40 and the impermeability grade P6.
6. The method for constructing the column type inspection pit cast-in-place concrete track column according to claim 2, wherein the method comprises the following steps: at least two reserved holes (33) are arranged on the convex head (35) and the concave head (34).
7. The method for constructing the column type inspection pit cast-in-place concrete track column according to claim 1, wherein the method comprises the following steps: the shaping steel template unit (40) further comprises a plurality of side templates (18), angle steels (47) and lug plates (48) are respectively positioned at two ends of the side templates (18), fixing holes (49) are respectively formed in the angle steels (47) and the lug plates (48), the angle steels (47) on one side template (18) of two adjacent side templates (18) are connected with the lug plates (48) on the other side template (18) through the fixing holes (49), and the side templates (18) are connected end to form a square frame.
8. A column type inspection pit cast-in-place concrete track stand, its characterized in that: obtained by the column inspection pit cast-in-place concrete track column construction method of any one of claims 1 to 7.
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