CN114439291A - Column type inspection pit cast-in-place concrete track stand column and construction method - Google Patents
Column type inspection pit cast-in-place concrete track stand column and construction method Download PDFInfo
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- CN114439291A CN114439291A CN202210090132.2A CN202210090132A CN114439291A CN 114439291 A CN114439291 A CN 114439291A CN 202210090132 A CN202210090132 A CN 202210090132A CN 114439291 A CN114439291 A CN 114439291A
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- 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
- 238000009415 formwork Methods 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 6
- 241000282326 Felis catus Species 0.000 claims description 22
- 239000000758 substrate Substances 0.000 claims description 22
- 238000009412 basement excavation Methods 0.000 claims description 20
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 7
- 239000004571 lime Substances 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 5
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 230000009193 crawling Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 abstract description 6
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 210000003205 muscle Anatomy 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000009434 installation Methods 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
- 238000010586 diagram Methods 0.000 description 1
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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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Abstract
The invention provides a column type inspection pit cast-in-place concrete track upright post and a construction method, wherein the column type inspection pit cast-in-place concrete track upright post comprises a fully hardened cushion layer, a base drainage ditch adopts an integrated all-steel template, and a shaped ladder stand is adopted; prefabricating a tubular pile cap rapid formwork system; the cast-in-place concrete track upright post template system adopts a unit type quick assembly and disassembly counter-bracing steel pipe to connect and reinforce a shaping steel template system, and the cast-in-place concrete track upright post concrete pouring adopts a winch to pull a rail type material conveying and pouring system; the method mainly comprises the following construction steps: (1) measuring and paying off, (2) cutting and crushing a cushion layer, (3) excavating earth, (4) constructing a base drainage ditch, (5) constructing a foundation cushion layer, (6) constructing a tubular pile cap, (7) constructing a raft foundation, (8) constructing a rail column, and (9) constructing a column base drainage ditch; the invention can effectively reduce the engineering cost, can realize the construction by a centralized prefabrication and field assembly method, accelerates the construction speed, and can obtain better technical and economic benefits when being applied to the 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 the pace of urban construction, the central city is continuously radiating to the periphery, the urgency of rail transit construction is also increasing, and the enthusiasm of urban rail transit constructed in various regions is increasing day by day. As an important link of urban rail transit construction, the construction of the linear column type inspection pit rail in the parking lot library is increasingly emphasized due to high precision, tight construction period and high safety requirements. The improvement on the links of rail transportation, rail erection, rail adjustment, pouring and the like in the construction process of the column type inspection pit at present is urgently needed. The requirements of simplification, standardization and scientification are met as much as possible. So as to accelerate the construction progress, ensure the engineering quality and reduce the engineering cost. Meanwhile, a better guiding function is provided for similar projects of subways. The rail erecting method is a common construction method for a column type inspection pit in a subway vehicle section, and has the advantages that the construction deviation of a track can be eliminated in the concrete construction process of an integral track bed, and the construction error is effectively controlled within an allowable range.
Disclosure of Invention
The invention aims to provide a column type inspection pit cast-in-place concrete track upright post and a construction method, which effectively reduce the engineering cost, can realize the construction by a centralized prefabrication and field assembly method, accelerate the construction speed, and can obtain better technical and economic benefits when applied to actual engineering
In order to solve the technical problem, the invention provides a construction method of a column type inspection pit cast-in-place concrete track column, which comprises the following steps:
step one, measurement and paying-off: firstly, measurement setting-out is carried out by a measurer, a side line is released according to the size, the shape and the position of an inspection pit or a tubular pile and is marked by lime, the size of the bottom of the pit is marked by using the lime marking mark as an excavation contour line, and a positioning pile is arranged on the outer side of the white line;
step two, 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-laying excavation and manual cooperation excavation of a small excavator; the shaped crawling ladder can be spliced and lengthened or disassembled quickly through entering and exiting the column type inspection pit;
step four, constructing a basement drainage ditch: the base drainage ditch is made of an integrated all-steel template, a bottom template and a side template of the integrated all-steel template are processed into a whole, a base grouting opening is formed in the bottom template, and a side template grouting opening is formed in the upper portion of the side template; the end template of the substrate drainage ditch and the integrated all-steel template form an integrated template of the substrate drainage ditch, and the substrate drainage ditch is poured through the substrate grouting port and the side mold grouting port in sequence; two sides of the integrated all-steel template poured at the first section of the base drainage ditch are both required to be provided with base drainage ditch end templates, the rest of the integrated all-steel template is only required to be provided with the base drainage ditch end template at one end, and the other end is placed at the side of the poured base drainage ditch;
step five, constructing a foundation cushion layer: the cushion layer pouring stereotyped steel template system is supported inside the base drainage ditch on two sides of the cushion layer and comprises at least two template support frames, an adjustable threaded rod, a fixing sleeve, a clamping plate, a side template, an end template and a steel chisel, wherein the opposite side surfaces of the two adjacent template support frames are connected with the symmetrically arranged fixing sleeve, the clamping plate is arranged on the template support frame close to the cushion layer, and the clamping plate is positioned on one side of the template support frame far away from the fixing sleeve; placing template brackets in the base drainage ditch, enabling the outer side surfaces of the template brackets to be attached to the inner side walls of the base drainage ditch, respectively placing two ends of an adjustable threaded rod in fixing sleeves on two adjacent template brackets, placing the side templates on a clamping plate, enabling the template brackets to be tightly attached to the inner side walls of the base drainage ditch by adjusting the length of the adjustable threaded rod, and further clamping and fixing the side templates through the template brackets and the inner side walls of the base drainage ditch; the end template is connected with the side templates on one side of the two adjacent template brackets through steel brazes, and the cushion concrete is poured after the cushion pouring and shaping steel template system is erected;
step six, tubular pile cap construction: the prefabricated tubular pile cap rapid formwork system comprises a pile cap steel template, a template upright post, a steel tube sleeve, a prefabricated tubular pile reserved steel bar, 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 enlarged support 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 steel bar of the precast tubular pile is inserted into the steel pipe sleeve; pouring precast tubular pile cap concrete after the precast tubular pile cap rapid formwork system is erected;
seventhly, raft foundation construction: firstly, mounting a panel, then mounting a secondary ridge, arranging a temporary support, mounting a split bolt and a main ridge, adjusting and fastening, and finally mounting a top support and an inclined strut; a ground pump for concrete pouring;
step eight, track column construction: the cast-in-place concrete track column formwork system comprises a stereotyped steel formwork unit and unit type quick dismounting and supporting steel pipe units, wherein the stereotyped steel formwork unit comprises angle steel, an ear plate and a fixing hole; the top of the cast-in-place concrete track upright post is provided with a track beam, and the track beam is fixed with the main reinforcement of the cast-in-place concrete track upright post through a fixing fastener and a fastener sleeve;
the method comprises the following steps that a winch is adopted for carrying a rail-type material conveying and pouring system in a traction type mode, the pouring system comprises a hopper, a traction type rail temporary support, a traction type rail beam and a pulley, the upper portion of the traction type rail temporary support is connected with the traction type rail beam, the pulley is rotatably connected onto the hopper and moves on the traction type rail beam, the hopper is made to move to different shaping steel formwork unit positions along the traction type rail beam, and the concrete pouring of the cast-in-place concrete rail upright column is carried out through the hopper;
step nine, constructing a drainage ditch at the bottom of the column: and constructing the column bottom drainage ditch by referring to the foundation drainage ditch, and performing backfill construction after the construction of the column bottom drainage ditch is finished.
The invention has the beneficial effects that:
1. the column type inspection pit cast-in-place concrete track column formwork supporting member is prefabricated and processed in a factory, is high in construction speed, is assembled outside the field, improves the turnover rate of the formwork member and reduces the construction cost.
2. The column type inspection pit cast-in-place concrete track column formwork system is simple to operate, the construction speed is increased, and manpower is saved.
3. The column type inspection pit cast-in-place concrete track stand column formwork system is simple in structure, economical and effective, and construction quality of the column type inspection pit cast-in-place concrete track stand column is effectively guaranteed.
Drawings
FIG. 1 is a schematic elevation view of a column structure of a cast-in-place concrete track of a column inspection pit;
FIG. 2 is a view of a base drain integrated all-steel formwork;
FIG. 3 is a schematic view of a larger version of the base drain end template;
FIG. 4 is a schematic diagram of a bedding formwork in elevation;
FIG. 5 is a schematic view of a side formwork of a drainage ditch of a bedding formwork foundation;
FIG. 6 is a schematic plan view of a cushion form;
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 shaped ladder;
FIG. 10 is a schematic view of a modular ladder unit in a larger format;
FIG. 11 is a schematic view of a large scale of a track column embedded rib regularization bracket;
FIG. 12 is a schematic view of a column form inspection pit cast-in-place concrete track column form and concrete placement plan;
FIG. 13 is a schematic elevation view of a column form inspection pit cast in place concrete track column form and concrete placement;
FIG. 14 is a schematic view of a column form of a cast-in-place concrete track column form cross section;
FIG. 15 is a schematic view of a large sample of shaped steel form units;
FIG. 16 is a flow chart of the construction process of the present invention.
In the figure: 1-precast tubular pile, 2-base layer, 3-raft foundation, 4-base drainage ditch, 5-revetment, 6-full-hardened cushion layer, 7-cast-in-place concrete track upright, 8-column base drainage ditch, 9-backfill, 10-integrated all-steel template, 11-base grouting port, 12-screw rod, 13-brace rod, 14-grooved fixed lug plate, 15-base drainage ditch end template, 16-adjustable threaded rod, 17-template support frame, 18-steel template, 19-cushion layer, 20-fixed sleeve, 21-clamp plate, 22-template upright, 23-steel tube sleeve, 24-precast tubular pile reserved steel bar, 25-L type adjustable threaded rod, 26-enlarged support plate and 27-end template, 28-side mold grouting port, 29-steel rod, 30-plug pin, 31-shaped ladder stand, 32-shaped ladder stand unit, 33-preformed hole, 34-concave head, 35-convex head, 36-threaded sleeve, 37-track upright post embedded rib shaped support, 38-hopper, 39-traction type track temporary support, 40-shaped steel formwork unit, 41-track beam, 42-traction type track beam, 43-unit type quick dismounting and supporting steel pipe unit, 44-fixing fastener, 45-fastener sleeve, 46-pulley, 47-angle steel, 48-lug plate, 49-fixing hole and 50-pile cap steel formwork.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning "at least one" or "one or more," i.e., that a quantity of one element may be one in one embodiment, while a quantity of another element may be plural in other embodiments, and the terms "a" and "an" should not be interpreted as limiting the quantity.
As shown in fig. 1 to 16, the present invention provides a column construction method for a cast-in-place concrete track of a column type inspection pit, comprising the steps of:
step one, measurement and paying-off: firstly, measurement and paying-off are carried out by a measurer, a sideline is released according to the size, shape and position of an inspection pit or a pipe pile and is marked by lime, the size of the bottom of the pit is designed according to the arrangement of an operation space and a drainage ditch of a worker, 50cm is placed outside the pit according to the outline, the lime marking mark is used as an excavation outline line, and positioning piles are driven at the 50cm position outside the lime marking line at intervals of 10m to ensure the excavation gradient.
Step two, cutting and crushing the cushion layer: and pouring a fully hardened cushion layer 6, and cutting and crushing the fully hardened cushion layer 6 at the excavation position before excavation to meet the excavation condition.
Step three, earth excavation: excavating foundation earthwork by adopting a mode of slope-laying excavation and manual cooperation excavation of a small excavator; through regularization cat ladder 31 discrepancy column type inspection hole, regularization cat ladder 31 is including regularization cat ladder unit 32, preformed hole 33, concave head 34, plush head 35, wherein regularization cat ladder unit 32 both ends set up concave head 34 respectively, plush head 35, concave head 34, correspond on the plush head 35 and set up preformed hole 33, when two adjacent regularization cat ladder units 32 link to each other, preformed hole 33 on the concave head 34 with one of them regularization cat ladder unit 32 and the plush head 35 of another regularization cat ladder unit 32 is connected through bolt 30, and then make regularization cat ladder 31 splice the extension fast or tear the weak point open.
Step four, constructing a basement drainage ditch: the substrate drainage ditch 4 is made of 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 formed in the bottom template, and a side template grouting opening 28 is formed in the upper portion of the side template; the base drainage ditch end template 15 is welded and connected with a belt groove fixing lug plate 14, the belt groove fixing lug plate 14 is placed on a screw rod 12 of the integrated all-steel template 10 and fixed through a bolt, the screw rod 12 vertically penetrates through the side surfaces of two ends of the side template of the integrated all-steel template 10, and the opening positions of two ends of the integrated all-steel template 10 are blocked through the base drainage ditch end template 15, so that the base drainage ditch end template 15 and the integrated all-steel template 10 form a base drainage ditch integrated template, and the base drainage ditch 4 is poured through the base grouting port 11 and the side template grouting port 28 in sequence; two sides of the integrated all-steel template 10 poured at the first section of the base drainage ditch 4 are both required to be provided with base drainage ditch end templates 15, the rest parts are only required to be provided with the base 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 base drainage ditch;
step five, constructing a foundation cushion layer: the cushion layer 19 pouring forming steel template system is supported inside the base drainage ditch 4 on two sides of the cushion layer 19, the cushion layer 19 pouring forming steel template system comprises at least two template brackets 17, adjustable threaded rods 16, fixing sleeves 20, clamping plates 21, side templates 18, end templates 27 and steel brazes 29, wherein the fixing sleeves 20 which are symmetrically arranged are welded and connected on opposite side surfaces of every two adjacent template brackets 17, the clamping plates 21 are arranged on the template brackets 17 close to the cushion layer 19, and the clamping plates 21 are positioned on one sides of the template brackets 17 far away from the fixing sleeves 20; placing a template support frame 17 in the base drainage ditch 4 to ensure that the outer side surface of the template support frame 17 is attached to the inner side wall of the base drainage ditch 4, respectively placing two ends of an adjustable threaded rod 16 in fixing sleeves 20 on two adjacent template support frames 17, placing a side template 18 on the clamping plate 17, adjusting the length of the adjustable threaded rod 16 to ensure that the template support frame 17 is attached to the inner side wall of the base drainage ditch 4, and further clamping the fixed side template 18 with the inner side wall of the base drainage ditch 4 through the template support frame 17; the end template 27 is connected with the side templates 18 on one side of the two adjacent template brackets 17 through steel brazes 29, so that the end template 27 and the side templates 18 form a rectangular frame, and after the cushion layer 19 pouring and shaping steel template system is erected, cushion layer 19 concrete is poured in the rectangular frame formed by the end template 27 and the side templates 18.
Step six, tubular pile cap construction: the precast tubular pile 1 pile cap rapid formwork system comprises a pile cap steel template 50, a template upright post 22, a steel pipe sleeve 23, precast tubular pile reserved steel bars 24, an L-shaped adjustable threaded rod 25 and an enlarged supporting plate 26, wherein the parts are all processed and manufactured in a factory; the outer side of the pile cap steel template 50 is welded with the template upright post 22, the lower part of the template upright post 22 is welded with the enlarged support plate 26, the upper part of the template upright post 22 is fixed with the 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, far away from the pile cap steel template 50, of the L-shaped adjustable threaded rod 25 is connected with a steel tube sleeve 23, and a prefabricated pipe pile reserved steel bar 24 is inserted into the steel tube sleeve 23; and pouring concrete for the pile caps of the prefabricated pipe piles 1 after the pile cap quick formwork supporting system of the prefabricated pipe piles 1 is erected.
Seventhly, raft foundation construction: the method comprises the following steps that (1) panel installation is carried out on a template, secondary ridge installation is carried out, temporary supports are arranged, split bolts and main ridges are installed, adjustment and fastening are carried out, and finally top supports and inclined struts are installed; the strength grade of the raft concrete is C40, the impermeability grade is P6, the concrete is commercial concrete, and a pump is used for concrete pouring; before concrete construction, procedures such as steel bar binding, embedded parts, embedded pipe positions, template reinforcement and the like must be checked and accepted, and concrete can be poured at the rear.
Step eight, track column construction: the cast-in-place concrete track column 7 template system comprises a shaped steel template unit 40 and unit type quick assembling and disassembling oppositely-supporting steel tube units 43, wherein the shaped steel template unit 40 comprises angle steel 47, ear plates 48 and fixing holes 49, and after the assembly of the shaped steel template unit 40 is completed, a plurality of shaped steel template units 40 are fixed into a whole through the unit type quick assembling and disassembling oppositely-supporting steel tube units 43; the top of the cast-in-place concrete track upright post 7 is provided with a track beam 41, and the track beam 41 is fixed with the main reinforcement of the cast-in-place concrete track upright post 7 through a fixing fastener 44 and a fastener sleeve 45.
The cast-in-place concrete track column 7 is cast by adopting a winch to pull a rail-type material conveying and pouring system, the pouring system comprises a hopper 38, a pull-type track temporary support 39, a pull-type track beam 42 and a pulley 46, the pull-type track temporary support 39 is processed and manufactured in a factory and can be quickly assembled and disassembled, the pull-type track beam 42 is connected to the upper part of the pull-type track temporary support 39, the pulley 46 is rotatably connected to the hopper 38, the pulley 46 moves on the pull-type track beam 42, so that the hopper 38 moves to different sizing steel formwork units 40 along the pull-type track beam 42, and the cast-in-place concrete track column 7 is cast by the hopper 38.
Step nine, constructing a drainage ditch at the bottom of the column: construction of the column bottom drainage ditch refers to construction of the base drainage ditch, and backfill construction is carried out after the construction of the column 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 shaped steel template system poured in the cushion layer 19 is supported in the base drainage ditches 4 on two sides of the cushion layer 19, and the column type inspection pit entering and exiting is quickly lengthened or shortened through a shaped ladder 31; prefabricating a tubular pile 1 pile cap rapid formwork system; the cast-in-place concrete track upright post 7 template system adopts a unit type quick dismounting and butt-bracing steel pipe to connect and reinforce a shaping steel template system; the concrete pouring of the cast-in-place concrete track upright post 7 adopts a winch to pull a track type material conveying and pouring system.
The base drainage ditch 4 is made of 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 base grouting opening 11 is formed in the bottom template, and a side template grouting opening 28 is formed in the upper portion of the side template; the base drainage ditch end template 15 is welded and connected with a belt groove fixing lug plate 14, the belt groove fixing lug plate 14 is placed on a screw rod 12 of the integrated all-steel template 10 and fixed through a bolt, the screw rod 12 vertically penetrates through the side surfaces of two ends of the side template of the integrated all-steel template 10, and the opening positions of two ends of the integrated all-steel template 10 are blocked through the base drainage ditch end template 15, so that the base drainage ditch end template 15 and the integrated all-steel template 10 form a base drainage ditch integrated template, and the base drainage ditch 4 is poured through the base grouting port 11 and the side template grouting port 28 in sequence; two sides of the integrated all-steel template 10 poured at the first section of the base drainage ditch 4 are both required to be provided with base drainage ditch end templates 15, the rest parts are only required to be provided with the base 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 base drainage ditch; through regularization cat ladder 31 discrepancy column type inspection hole, regularization cat ladder 31 is including regularization cat ladder unit 32, preformed hole 33, the concave head 34, plush head 35, wherein regularization cat ladder unit 32 both ends set up the concavo head 34 respectively, plush head 35, the concavo head 34, correspond on the plush head 35 and set up preformed hole 33, when two adjacent regularization cat ladder units 32 link to each other, preformed hole 33 on 34 with the concave head of one of them regularization cat ladder unit 32 and preformed hole 33 on the plush head 35 of another regularization cat ladder unit 32 are connected through bolt 30, and then make regularization cat ladder 31 splice the extension fast or tear short.
Specifically, at least two prepared holes 33 are formed in each of 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 prepared holes 33, the horizontal position between the raised head 35 and the recessed head 34 can be ensured through the at least two prepared holes 33.
The cushion layer 19 pouring and sizing steel template system is supported inside the base drainage ditch 4 on two sides of the cushion layer 19, the cushion layer 19 pouring and sizing steel template system comprises at least two template brackets 17, adjustable threaded rods 16, fixing sleeves 20, clamping plates 21, side templates 18, end templates 27 and steel brazes 29, wherein the fixing sleeves 20 which are symmetrically arranged are welded and connected on opposite side surfaces of every two adjacent template brackets 17, the clamping plates 21 are arranged on the template brackets 17 close to the cushion layer 19, and the clamping plates 21 are positioned on one sides of the template brackets 17 far away from the fixing sleeves 20; placing template brackets 17 in the substrate drainage ditch 4, enabling the outer side surfaces of the template brackets 17 to be attached to the inner side walls of the substrate drainage ditch 4, respectively placing two ends of an adjustable threaded rod 16 in fixing sleeves 20 on two adjacent template brackets 17, placing side templates 18 on clamping plates 21, enabling the template brackets 17 to be attached to the inner side walls of the substrate drainage ditch 4 by adjusting the length of the adjustable threaded rod 16, and further clamping the fixed side templates 18 with the inner side walls of the substrate drainage ditch 4 through the template brackets 17; the end templates 27 are connected with the side templates 18 on one side of the two adjacent template brackets 17 through steel brazes 29, so that the end templates 27 and the side templates 18 form a rectangular frame, and after the cushion layer 19 is erected through a 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 formworks 27 are wound with the outer sides of the sideforms 18 through the steel brazes 29, so that the steel brazes 29 are wound on and fix the rectangular frames formed by the end formworks 27 and the sideforms 18.
The precast tubular pile 1 pile cap rapid formwork system comprises a pile cap steel template 50, a template upright post 22, a steel pipe sleeve 23, precast tubular pile reserved steel bars 24, an L-shaped adjustable threaded rod 25 and an enlarged supporting plate 26, wherein the parts are all processed and manufactured in a factory; the outer side of the pile cap steel template 50 is welded with the template upright post 22, the lower part of the template upright post 22 is welded with the enlarged support plate 26, the upper part of the template upright post 22 is fixed with the 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, far away from the pile cap steel template 50, of the L-shaped adjustable threaded rod 25 is connected with a steel tube sleeve 23, and a prefabricated pipe pile reserved steel bar 24 is inserted into the steel tube sleeve 23; and pouring concrete for the pile caps of the prefabricated pipe piles 1 after the pile cap quick formwork supporting system of the prefabricated pipe piles 1 is erected.
It is worth mentioning that before the precast tubular pile 1 is poured, pouring positions of the precast tubular pile 1 need to be set at corresponding positions of the base layer 2 and the cushion layer 19, so that the precast tubular pile 1 can be poured through the rapid formwork system of the pile cap of the precast tubular pile 1.
The track column embedded bar forming support 37 is processed and manufactured in a factory according to the size of the cast-in-place concrete track column 7, the threaded sleeves 36 on the track column embedded bar forming support 37 correspond to the main bars of the cast-in-place concrete track column 7 one by one, and the main bars of the cast-in-place concrete track column 7 can be accurately positioned and quickly installed; the track column pre-buried bar regularization support 37 is welded and connected on the 3 steel bars of the raft foundation.
Specifically, when using the pre-buried muscle regularization support 37 of track stand, establish the 7 periphery of cast in situ concrete track stand with the pre-buried muscle regularization support 37 cover of track stand to correspond with the main muscle of cast in situ concrete track stand through threaded sleeve 36 and be connected, and then increase the stability of cast in situ concrete track stand 7 circumference through the pre-buried muscle regularization support 37 of track stand.
The cast-in-place concrete track upright post 7 template system comprises a shaped steel template unit 40 and unit type quick dismounting and mounting oppositely-supporting steel tube units 43, wherein the shaped steel template unit 40 comprises angle steel 47, an ear plate 48 and a fixing hole 49, and after the assembly of the shaped steel template unit 40 is completed, a plurality of shaped steel template units 40 are fixed into a whole by the unit type quick dismounting and mounting oppositely-supporting steel tube units 43; the top of the cast-in-place concrete track upright post 7 is provided with a track beam 41, and the track beam 41 is fixed with the main reinforcement of the cast-in-place concrete track upright post 7 through a fixing fastener 44 and a fastener sleeve 45.
Specifically, the regularization steel template unit 40 further includes a plurality of side formworks 18, and angle steel 47, otic placode 48 are located the both ends of side formworks 18 respectively, and all seted up fixed orifices 49 on angle steel 47, the otic placode 48, and angle steel 47 on one of them side formworks 18 of adjacent both sides template 18 is connected through fixed orifices 49 cooperation bolt with otic placode 48 on the opposite side template 18, makes a plurality of side formworks 18 end to end form square frame.
In addition, unit formula quick assembly disassembly props steel pipe unit 43 including setting up in the grip block of regularization steel form unit 40 both sides, being used for connecting the adjacent two grip blocks to propping the steel pipe, to propping to being connected through the bolt between steel pipe and the grip block, after propping the fixed completion of steel pipe and grip block, carry on spacingly to a plurality of regularization steel form units 40 in the middle through both sides grip block, and then make a plurality of regularization steel form units 40 form wholly.
The cast-in-place concrete track column 7 concrete pouring adopts a winch to pull a rail-type material conveying pouring system, the pouring system comprises a hopper 38, a pull-type track temporary support 39, a pull-type track beam 42 and a pulley 46, the pull-type track temporary support 39 is processed and manufactured in a factory and can be quickly assembled and disassembled, the pull-type track beam 42 is connected to the upper portion of the pull-type track temporary support 39, the pulley 46 is rotatably connected to the hopper 38, the pulley 46 moves on the pull-type track beam 42, the hopper 38 moves to different sizing steel formwork units 40 along the pull-type track beam 42, and the cast-in-place concrete track column 7 concrete pouring is carried out through the hopper 38.
Specifically, concrete is loaded in the hopper 38, and after the hopper 38 is moved to different positions of the shaped steel formwork unit 40, the concrete in the hopper 38 is poured into the shaped steel formwork unit 40 through external pouring equipment to form the cast-in-place concrete track column 7.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (8)
1. A construction method for a column type inspection pit cast-in-place concrete track column is characterized by comprising the following steps:
step one, measurement and paying-off: firstly, measurement and setting-out are carried out by a measurer, a sideline is released and marked by lime according to the size, shape and position of an inspection pit or a tubular pile, the size of the bottom of the pit is marked by using the lime marking mark as an excavation contour line, and a positioning pile is driven on the outer side of the white line;
step two, 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-laying excavation and manual cooperation excavation of a small excavator; the shaped crawling ladder (31) enters and exits the column type inspection pit, and the shaped crawling ladder (31) can be spliced and lengthened or disassembled quickly;
step four, constructing a basement drainage ditch: the base drainage ditch (4) is made of 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, a base grouting opening (11) is formed in the bottom template, and a side template grouting opening (28) is formed in the upper portion of the side template; the end template (15) of the substrate drainage ditch and the integrated all-steel template (10) form an integrated template of the substrate drainage ditch, and the substrate drainage ditch (4) is poured through the substrate grouting port (11) and the side mold grouting port (28) in sequence; two sides of an integrated all-steel template (10) poured at the first section of the substrate drainage ditch (4) are both required to be provided with substrate drainage ditch end templates (15), the rest of the integrated all-steel template (10) is only required to be provided with the substrate drainage ditch end template (15), and the other end of the integrated all-steel template is placed at the side of the poured substrate drainage ditch;
step five, constructing a foundation cushion layer: the cushion layer (19) is poured into a stereotyped steel template system and supported inside the basement drainage ditch (4) on two sides of the cushion layer (19), the cushion layer (19) is poured into the stereotyped steel template system and comprises at least two template support frames (17), adjustable threaded rods (16), fixing sleeves (20), clamping plates (21), side templates (18), end templates (27) and steel brazes (29), wherein the fixing sleeves (20) which are symmetrically arranged are connected on opposite sides of every two adjacent template support frames (17), 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 on one sides of the template support frames (17) far away from the fixing sleeves (20); placing template brackets (17) in the substrate drainage ditch (4), enabling the outer side surfaces of the template brackets (17) to be attached to the inner side walls of the substrate drainage ditch (4), respectively placing two ends of an adjustable threaded rod (16) in fixed sleeves (20) on two adjacent template brackets (17), placing side templates (18) on the clamping plates (17), enabling the template brackets (17) to be attached to the inner side walls of the substrate drainage ditch (4) by adjusting the length of the adjustable threaded rod (16), and further clamping the fixed side templates (18) through the template brackets (17) and the inner side walls of the substrate drainage ditch (4); the end template (27) is connected with the side templates (18) at one side of the two adjacent template brackets (17) through steel brazes (29), and after the bedding layer (19) is poured and erected with the shaped steel template system, concrete of the bedding layer (19) is poured;
step six, tubular pile cap construction: the rapid pile cap formwork supporting system for the precast tubular pile (1) comprises a pile cap steel template (50), a template upright post (22), a steel pipe sleeve (23), precast tubular pile reserved steel bars (24), an L-shaped adjustable threaded rod (25) and an enlarged supporting plate (26); the outer side 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 support 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, far away from the pile cap steel template (50), of the L-shaped adjustable threaded rod (25) 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 precast tubular pile (1) pile cap concrete after the precast tubular pile (1) pile cap rapid formwork system is erected;
seventhly, raft foundation construction: firstly, mounting a panel, then mounting a secondary ridge, arranging a temporary support, mounting a split bolt and a main ridge, adjusting and fastening, and finally mounting a top support and an inclined strut; a ground pump for concrete pouring;
step eight, track column construction: the template system of the cast-in-place concrete track column (7) comprises shaped steel template units (40) and unit type quick assembling and disassembling oppositely-supporting steel tube units (43), wherein each shaped steel template unit (40) comprises angle steel (47), an ear plate (48) and a fixing hole (49), and after the assembly of the shaped steel template units (40) is completed, the plurality of shaped steel template units (40) are fixed into a whole by the unit type quick assembling and disassembling oppositely-supporting steel tube units (43); the top of the cast-in-place concrete track upright post (7) is provided with a track beam (41), and the track beam (41) is fixed with a main bar of the cast-in-place concrete track upright post (7) through a fixing fastener (44) and a fastener sleeve (45);
the method comprises the steps that a winch is adopted to pull a rail-running type material conveying and pouring system for pouring concrete of a cast-in-place concrete rail upright post (7), the pouring system comprises a hopper (38), a pull-type rail temporary support (39), a pull-type rail beam (42) and a pulley (46), the upper portion of the pull-type rail temporary support (39) is connected with the pull-type rail beam (42), the hopper (38) is rotatably connected with the pulley (46), the pulley (46) moves on the pull-type rail beam (42), the hopper (38) is made to move to different sizing steel formwork units (40) along the pull-type rail beam (42), and concrete pouring of the cast-in-place concrete rail upright post (7) is conducted through the hopper (38);
step nine, constructing a drainage ditch at the bottom of the column: and constructing the column bottom drainage ditch by referring to the foundation drainage ditch, and performing backfill construction after the construction of the column bottom drainage ditch is finished.
2. The column type inspection pit cast-in-place concrete track column construction method according to claim 1, characterized in that: regularization cat ladder (31) are including regularization cat ladder unit (32), preformed hole (33), concave head (34), plush head (35), wherein regularization cat ladder unit (32) both ends set up plush head (34) respectively, plush head (35), plush head (34), correspond on plush head (35) and set up preformed hole (33), when two adjacent regularization cat ladder units (32) link to each other, preformed hole (33) on the plush head (34) with one of them regularization cat ladder unit (32) are connected with preformed hole (33) on plush head (35) of another regularization cat ladder unit (32) through bolt (30).
3. The column type inspection pit cast-in-place concrete track column construction method according to claim 1, characterized in that: fixed otic placode of trough of belt (14) is connected on basement escape canal end template (15), and fixed otic placode of trough of belt (14) is placed and is passed through the bolt fastening on screw rod (12) of integral type all-steel template (10), and both ends side of integral type all-steel template (10) side template is worn to locate perpendicularly in screw rod (12) to through the both ends open position of basement escape canal end template (15) shutoff integral type all-steel template (10).
4. The column type inspection pit cast-in-place concrete track column construction method according to claim 1, characterized in that: the end formworks (27) and the side formworks (18) form a rectangular frame, and cushion (19) concrete is poured into the rectangular frame formed by the end formworks (27) and the side formworks (18).
5. The column type inspection pit cast-in-place concrete track column construction method according to claim 1, characterized in that: the strength grade of the raft concrete is C40, and the impermeability grade is P6.
6. The column type inspection pit cast-in-place concrete track column construction method according to claim 2, characterized in that: at least two preformed holes (33) are arranged on the raised head (35) and the concave head (34).
7. The column type inspection pit cast-in-place concrete track column construction method according to claim 1, characterized in that: the stereotyped steel template unit (40) still includes a plurality of side forms (18), angle steel (47), otic placode (48) are located the both ends of side form (18) respectively, and angle steel (47), fixed orifices (49) have all been seted up on otic placode (48), angle steel (47) on one of them side form (18) of adjacent both sides form (18) are connected through fixed orifices (49) with otic placode (48) on opposite side form (18), make a plurality of side forms (18) end to end form square frame.
8. The utility model provides a column type inspection hole cast in situ concrete track stand which characterized in that: the column inspection pit cast-in-place concrete track column construction method is obtained through the column inspection pit cast-in-place concrete track column construction method of any one of claims 1 to 7.
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