CN106988339B - Sandy gravel stratum piping lane construction technology - Google Patents
Sandy gravel stratum piping lane construction technology Download PDFInfo
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- CN106988339B CN106988339B CN201710179655.3A CN201710179655A CN106988339B CN 106988339 B CN106988339 B CN 106988339B CN 201710179655 A CN201710179655 A CN 201710179655A CN 106988339 B CN106988339 B CN 106988339B
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
Abstract
The invention discloses a kind of sandy gravel stratum piping lane construction technologies, follow the steps below construction：The construction of piping lane external mold places cushion block frame locator in the piping lane foundation trench bottom excavated, and lifting is put into core pulling template and core pulling mould assembly locating support, adjusts and connect core pulling template and backfill core pulling template two sides, tamp piping lane concrete cushion；The construction of piping lane internal model, completes the waterstop between wallboard and bottom plate, tamps reinforced concrete floor, and lifting is put into inner wall backform, in the two sides casting concrete of concrete cabinet, extracts the core pulling template of two sides out, acts inner wall backform；The construction of piping lane cast-in-place concrete cover board, installation demoulding tank cover plate and outboard template, are removed after pouring outboard template.The purpose of this hair is to provide a kind of simple process, the sandy gravel stratum piping lane construction technology that piping lane Forming Quality is good, construction cost is low, construction efficiency is high.
Description
Technical field
Type of the present invention is related to piping lane construction field more particularly to a kind of sandy gravel stratum piping lane construction technology.
Background technique
According to the minimum natural characteristic of gravel cohesive force, the slope system of fortune construction is dug in the underground pipe gallery foundation trench earthwork of sandy gravel stratum
Number is 1：1.2--1：Between 1.5, such as in the narrow area construction in city, traditional construction method need to be used, anchor pole whitewashes technology to shield
Slope reinforces to reduce sloping coefficient, to guarantee safety in production and requisite quality.Traditional construction method project cost is expensive, the duration
It is restricted and specified tediously long by slope protection support process and traditional box culvert construction technology.Seriously affect construction speed and project cost
It is high.
Summary of the invention
According to the above technological deficiency, the present invention provides a kind of sandy gravel stratum piping lane construction technology, it is therefore intended that when reducing construction
Between and reduce construction cost.
A kind of sandy gravel stratum piping lane construction technology, follows the steps below construction：
It is excavated in two times in gravel overburden layer and forms piping lane foundation trench 32, using the side for carrying out piping lane external mold construction when excavating
Method successively carries out the construction of piping lane internal model and the construction of piping lane cover board, several coagulations being fastenedly connected is formed in piping lane foundation trench 32
Native cabinet 22 forms sandy gravel stratum piping lane；
Wherein the construction of concrete cabinet 22 includes the following steps：
Step 1: being laid with cement stabilizing layer 4 in 32 bottom of piping lane foundation trench excavated, and placed on cement stabilizing layer 4
Concrete spacer pad 3；
Step 2: the lifting of core pulling template 12 is put into piping lane foundation trench 32, it is fixed to assemble locating support 11 by core pulling mould
On concrete spacer pad 3；Flexible positioning support 13 is installed at 12 center of core pulling template of two sides, and locating support suitable for reading is installed at top
The height of gear 7, adjustment core pulling template 12 connects adjacent core pulling template 12 to connect steel bushing 14 by template behind same level face；It will
Core pulling template 12 is backfilled to the first work surface 5 by gravel with adjacent 32 inner wall gap of piping lane foundation trench, takes out the assembly of core pulling mould
Locating support 11；Concrete cushion 16 is laid in the space that cement stabilizing layer 4 and core pulling template 12 are formed；
Step 3: the binding of reinforcing bar 37 to form piping lane tank floor is made on the surface of the concrete cushion 16, and
Reinforcing bar 37 in bottom surface binds marginal position and makes the binding of reinforcing bar 37 for forming side along the vertical direction, then to the bottom surface
Reinforcing bar 37, which binds upper casting concrete and solidifies, forms reinforced concrete floor 18；In the steel of reinforced concrete floor 18 and side
The construction of waterstop 17 is completed between muscle 37；
Step 4: removing positioning spacer 7 suitable for reading and flexible positioning support 13, inner wall backform 20 is lifted into the reinforcing bar into side
In 37 spaces formed with reinforced concrete floor 18；It is interior in the top of inner wall backform 20 installation width control positioning strut rail 19
The vertical direction of wall backform 20 installs expansion joint positioning device G-1；It is empty in the two sides that core pulling template 12 and inner wall backform 20 are formed
Interior casting concrete, forms the concrete cabinet 22 of side, while extracting core pulling template 12 out；Finally remove width control positioning
Strut rail 19 connects steel bushing 14 with template, acts inner wall backform 20；
Step 5: installing lift adjustment rack template 26 on reinforced concrete floor 18 and adjusting its height, make to go up and down
The top of adjusting bracket template 26 is with the piping lane inner roof wall in piping lane design drawing having a size of same level；In lift adjustment bracket
Collision avoiding caster 25 is installed at 26 both ends of template, withstands on collision avoiding caster 25 in the two sides inner wall of concrete cabinet 22；Calking is stretched into drawing
Bar 24 is mounted in the demoulding technology groove 36 of lift adjustment rack template 26, is stretched pull rod 24 by calking and is adjusted lift adjustment bracket
Template 26 makes the two sides inner wall of itself and concrete cabinet 22 mutually coincide；
Step 6: installation demoulding tank cover plate 27, reinforcing bar 37 is placed at the top of piping lane foundation trench 32 and is bound with the reinforcing bar of two sides；
After outboard template 29 is installed on the outside of the concrete cabinet 22 of two sides, pass through outboard template 29 and 26 shape of lift adjustment rack template
At space in casting concrete, formed piping lane at the top of concrete cabinet 22；Outboard template 29 and demoulding slot cover are removed later
Plate 27 removes lift adjustment rack template 26 to next job position by big stroke jack 23.
Preferably, the piping lane foundation trench 32 digs the earthing layer depth of fortune from natural ground 200 to down toward drawing for the first time
12-13cm is as cutting depth absolute altitude under the horizontal alignment of the piping lane cover board bottom of calibration, and width is according to piping lane cabinet drawing mark
Fixed width respectively overs 1.5-2 meters to two sides, the first work surface 5 that this face is constructed as piping lane cabinet.
Preferably, the bed course bottom absolute altitude demarcated of the second layer cutting depth of the piping lane foundation trench 32 to piping lane drawing with
On, the second work surface 6 that this face is constructed as piping lane cabinet；The excavation width of second work surface 6 is cabinet outer diameter to two
10cm is respectively overed in side, and sloping coefficient is depending on live gravel caking ability size.
Preferably, it is best that 32 excavation length of piping lane foundation trench, which is 1.2-1.3 times of piping lane cabinet length,.
Preferably, the concrete cushion 16, reinforced concrete floor 18, concrete cabinet 22 are mixed by hand pulling type
Solidifying soil vibration beam 28 carries out concrete pouring construction.
Preferably, 20 1 groups of the inner wall backform are 8*6m=48m；Enter construction area by crane lifting, completes side
Behind concrete pouring construction 4 hours of concrete cabinet 22, inner wall backform 20 is risen into 30cm, acts inner wall top in 5-6 hours
Mould 20.
Preferably, 26 1 groups of the lift adjustment rack template are 8*6m=48m.
In sandy gravel stratum piping lane construction technology provided by the invention, by using core pulling template, core pulling mould assembly locating support,
Flexible positioning support, inner wall backform, lift adjustment rack template and outboard template etc. pass through simple and quick mounting process,
Realize following technology and construction advantage：
1, there is the characteristics of simple secured, fast accurate, installation and speed of application are 18-20 times of conventional method, more main
What is wanted is that formwork is all completed by common civilian worker.Thoroughly get rid of the bottleneck of engineering constraint progress due to mud carpenter is in short supply.Together
The manpower consumption of Shi Zhimo is the 6-8% of conventional method formwork hereinafter, significantly reducing project cost, the labour of unit in charge of construction
Nervous problem is also thoroughly eliminated；Ensured in technique safety in production with it is superior in quality, at present various underground pipe galleries apply
Work efficiency rate is most fast, and quality, precision controlling are best, the minimum construction technology technology of construction cost.
2, template is full steel structure, and cavity dimension is precisely stable and firm, within continuous formwork assembly and disassembly 500-800 times not
Deformation, it is lossless.A large amount of branch mold materials can be saved compared with traditional formwork support process.Construction cost is greatly reduced.
3, the box mould of backform because size it is accurate, monolithic stability, generation when intensity, rigidity fully meet casting and compacting of concrete
Impact force and pressure, thoroughly eradicated the accident potential of spillage and quick-fried mould.Through field measurement, the electric power for thering is backform technology to construct
Each portion's scale error such as top surface, ground, metope, height, the width of piping lane is within the good criteria of 2-4mm.Concrete table
Face aesthetic finish has reached the fine quality of clear-water concrete, is that traditional construction method is unable to reach.
4, suitable for the buried concrete box culvert class building of the construction of heavy excavation needed for urban infrastructure, such as inverted-siphon, list
Road electric power pipe trench, rainwater pipe trench, sewage pipe trench etc..And the pipe gallery for merging above-mentioned several functions.16 meters multiply 5
Meter or less specification, arbitrarily change combination according to functional requirement.
5, concrete pouring construction technique is carried out than traditional concreting by using hand pulling type vibratory concrete beam
Construction technology improves 92% working efficiency.
Detailed description of the invention
Fig. 1 is that the piping lane foundation trench of sandy gravel stratum piping lane construction technology provided by the invention excavates structural schematic diagram；
Fig. 2 is that the piping lane foundation trench of sandy gravel stratum piping lane construction technology provided by the invention excavates the structural schematic diagram of A-A section view；
Fig. 3 is the piping lane core pulling template mounting structure schematic diagram of sandy gravel stratum piping lane construction technology provided by the invention；
Fig. 4 is that the structure of the piping lane core pulling template installation B-B section view of sandy gravel stratum piping lane construction technology provided by the invention is shown
It is intended to；
Fig. 5 is the slope gap fill structure schematic diagram of the piping lane of sandy gravel stratum piping lane construction technology provided by the invention；
Fig. 6 is the structure of the slope gap filling C-C section view of the piping lane of sandy gravel stratum piping lane construction technology provided by the invention
Schematic diagram；
Fig. 7 is the concrete cushion pouring structure schematic diagram of the piping lane of sandy gravel stratum piping lane construction technology provided by the invention；
Fig. 8 is that the concrete cushion of the piping lane of sandy gravel stratum piping lane construction technology provided by the invention pours the knot of D-D section view
Structure schematic diagram；
Fig. 9 is the piping lane sealing belt construction schematic diagram of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 10 is the structural representation of the piping lane sealing belt construction E-E section view of sandy gravel stratum piping lane construction technology provided by the invention
Figure；
Figure 11 is the piping lane reinforced concrete floor construction schematic diagram of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 12 is the piping lane inner wall backform installation schematic diagram of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 13 is showing for the piping lane inner wall backform installation G-G section view of sandy gravel stratum piping lane construction technology provided by the invention
It is intended to；
Figure 14 is the expansion joint positioning device structure schematic diagram of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 15 is the piping lane cabinet concreting schematic diagram of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 16 is the core pulling template extraction construction schematic diagram of the piping lane of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 17 is that the piping lane inner wall backform of sandy gravel stratum piping lane construction technology provided by the invention acts construction schematic diagram；
Figure 18 is the lift adjustment rack template scheme of installation of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 19 is the demoulding tank cover plate construction schematic diagram of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 20 is the outboard template scheme of installation of the piping lane of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 21 is the dismounting schematic diagram of the lift adjustment rack template of sandy gravel stratum piping lane construction technology provided by the invention；
Figure 22 is the piping lane as-built drawing of sandy gravel stratum piping lane construction technology provided by the invention.
Wherein, 1- sandy gravel stratum, 2- cushion block frame locator, 3- concrete spacer pad, 4- soil cement stabilized zone, 5- first
Work surface, the second work surface of 6-, 100- digging machine, 200- nature ground elevation, 7- positioning spacer suitable for reading, 8- connecting hole, 9- lifting
Hole, 10- level height regulating device, 11- core pulling mould assemble locating support, 12- core pulling template, and 13- stretches positioning support, 14-
Template connects steel bushing, 15- core pulling template level height regulating device, 16- concrete cushion, 17- waterstop, 18- reinforced concrete
Native bottom plate, the expansion joint G-1- positioning device, 19- width control positioning strut rail, 20- inner wall backform, 21- concrete equiblibrium mass distribution dress
It sets, 22- concrete cabinet, the big stroke jack of 23-, 24- calking stretches pull rod, 25- collision avoiding caster, 26- lift adjustment bracket mould
Plate, 27- demould tank cover plate, 28- hand pulling type vibratory concrete beam, 29- outboard template, 30- outboard template positioning device, 31- Huang
Oil cap, 32- piping lane foundation trench, 35- slope gap, 36- demoulding technology groove, 37- reinforcing bar.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.In addition, invention described below
Technical characteristic involved in different embodiments can be combined with each other as long as they do not conflict with each other.
It according to Fig. 1-2 2, is excavated in two times in gravel overburden layer and forms piping lane foundation trench 32, carried out using when excavating
The method of piping lane external mold construction successively carries out the construction of piping lane internal model and the construction of piping lane cover board, forms in piping lane foundation trench 32 several
A concrete cabinet 22 being fastenedly connected forms sandy gravel stratum piping lane；
Wherein the construction of concrete cabinet 22 includes the following steps：
Step 1: being laid with cement stabilizing layer 4 in 32 bottom of piping lane foundation trench excavated, and placed on cement stabilizing layer 4
Concrete spacer pad 3；
Step 2: the lifting of core pulling template 12 is put into piping lane foundation trench 32, it is fixed to assemble locating support 11 by core pulling mould
On concrete spacer pad 3；Flexible positioning support 13 is installed at 12 center of core pulling template of two sides, and locating support suitable for reading is installed at top
The height of gear 7, adjustment core pulling template 12 connects adjacent core pulling template 12 to connect steel bushing 14 by template behind same level face；It will
Core pulling template 12 is backfilled to the first work surface 5 by gravel with adjacent 32 inner wall gap of piping lane foundation trench, takes out the assembly of core pulling mould
Locating support 11；Concrete cushion 16 is laid in the space that cement stabilizing layer 4 and core pulling template 12 are formed；
Step 3: the binding of reinforcing bar 37 to form piping lane tank floor is made on the surface of the concrete cushion 16, and
Reinforcing bar 37 in bottom surface binds marginal position and makes the binding of reinforcing bar 37 for forming side along the vertical direction, then to the bottom surface
Reinforcing bar 37, which binds upper casting concrete and solidifies, forms reinforced concrete floor 18；In the steel of reinforced concrete floor 18 and side
The construction of waterstop 17 is completed between muscle 37；
Step 4: removing positioning spacer 7 suitable for reading and flexible positioning support 13, inner wall backform 20 is lifted into the reinforcing bar into side
In 37 spaces formed with reinforced concrete floor 18；It is interior in the top of inner wall backform 20 installation width control positioning strut rail 19
The vertical direction of wall backform 20 installs expansion joint positioning device G-1；It is empty in the two sides that core pulling template 12 and inner wall backform 20 are formed
Interior casting concrete, forms the concrete cabinet 22 of side, while extracting core pulling template 12 out；Finally remove width control positioning
Strut rail 19 connects steel bushing 14 with template, acts inner wall backform 20；
Step 5: installing lift adjustment rack template 26 on reinforced concrete floor 18 and adjusting its height, make to go up and down
The top of adjusting bracket template 26 is with the piping lane inner roof wall in piping lane design drawing having a size of same level；In lift adjustment bracket
Collision avoiding caster 25 is installed at 26 both ends of template, withstands on collision avoiding caster 25 in the two sides inner wall of concrete cabinet 22；Calking is stretched into drawing
Bar 24 is mounted in the demoulding technology groove 36 of lift adjustment rack template 26, is stretched pull rod 24 by calking and is adjusted lift adjustment bracket
Template 26 makes the two sides inner wall of itself and concrete cabinet 22 mutually coincide；
Step 6: installation demoulding tank cover plate 27, reinforcing bar 37 is placed at the top of piping lane foundation trench 32 and is bound with the reinforcing bar of two sides；
After outboard template 29 is installed on the outside of the concrete cabinet 22 of two sides, pass through outboard template 29 and 26 shape of lift adjustment rack template
At space in casting concrete, formed piping lane at the top of concrete cabinet 22；Outboard template 29 and demoulding slot cover are removed later
Plate 27 removes lift adjustment rack template 26 to next job position by big stroke jack 23.
According to Fig. 1-2, the external mold construction technology of piping lane carries out piping lane base in sandy gravel stratum 1 by digging machine 100 in two times
The excavation of slot 32, the piping lane foundation trench 32 dig the gravel earthing layer depth of fortune from natural ground 200 to down toward drawing mark for the first time
12-13cm is demarcated as cutting depth absolute altitude, width according to piping lane cabinet drawing under the horizontal alignment of fixed piping lane cover board bottom
Width 1.5-2 meters are respectively overed to two sides, the first work surface 5 that this face is constructed as piping lane cabinet.
Slope retaining between natural 200 to the first work surface 5 of ground, overburden layer within 2 meters can natural discharging slope, 2
Meter or more the box template support of side slope.
It is more than the bed course bottom absolute altitude that the second layer cutting depth of the piping lane foundation trench 32 to piping lane drawing is demarcated, this face conduct
Second work surface 6 of piping lane cabinet construction；The excavation width of second work surface 6 is that cabinet outer diameter is respectively overed to two sides
10cm, sloping coefficient is depending on live gravel caking ability size.
32 excavation length of piping lane foundation trench is that 1.2-1.3 times of piping lane cabinet length is best.
According to fig. 2 shown in -3, the cement stabilizing layer 4 of one layer of 30cm is poured with cement in the second work surface 6, it is steady in cement
Concrete spacer pad 3 is placed in given layer 4, by taking out cushion block after being limited and being fixed with cushion block frame locator 2
The lifting of assembled core pulling template 12 is put into piping lane foundation trench 32 by hole for hoist 9 with loop wheel machine, passes through pumping by frame locator 2
Core model assembly locating support 11 is fixed on concrete spacer pad 3；
Flexible positioning support 13 is installed at 12 center of core pulling template of two sides, and top installs locating support gear 7 suitable for reading, utilizes core pulling
Level height regulating device 10 adjusts the height of core pulling template 12 to same level in template 12, by adjacent core pulling template
12, which connect steel bushing 14 by the template of connecting hole 8, connects；According to Fig. 5-6, by core pulling template 12 and adjacent piping lane foundation trench
32 inner wall gaps, that is, slope gap 35 are backfilled to the first work surface 5 by gravel, take out core pulling mould and assemble locating support 11；
According to Fig. 7-8, the sky that is formed with hand pulling type vibratory concrete beam 28 in cement stabilizing layer 4 and core pulling template 12
Interior laying concrete cushion 16 is tamped its concrete cushion 16, the smooth requirement that fulfils assignment.
In the level height regulating device 10, by the butter lid 31 of setting, can to level height regulating device 10 into
The addition of row lubricant, makes the smooth work in operation process of level height regulating device 10.
According to Fig. 9-11, the internal model construction technology of piping lane makes to form pipe on the surface of the concrete cushion 16
The reinforcing bar 37 of corridor tank floor is bound, and the binding marginal position of reinforcing bar 37 in bottom surface makes form side along the vertical direction
Reinforcing bar 37 is bound, and then binds upper casting concrete to the reinforcing bar 37 of the bottom surface and solidification forms reinforced concrete floor 18；
With 28 construction technology of hand pulling type vibratory concrete beam construction piping lane reinforced concrete floor 18.At this point, reinforced concrete floor 18
Vertical equity height error is 3-5mm.Applying for waterstop 17 is completed between the reinforcing bar 37 of reinforced concrete floor 18 and side
Work；
According to Figure 12-14, remove positioning spacer 7 suitable for reading and flexible positioning support 13, by inner wall backform 20 lift into
In the space that the reinforcing bar 37 and reinforced concrete floor 18 of side are formed, 20 specification of inner wall backform is 8*6m=48m；On inner wall top
The top installation width control positioning strut rail 19 of mould 20, the vertical direction according to drawing requirement in inner wall backform 20 install expansion joint
Positioning device G-1；By by bar shaped mould, sponge plank and U-shaped card self-drilling connection is integral becomes embedded flexible
Seam positioning mould is vertically mounted on piping lane cabinet during carrying out expansion joint construction operation and carries out operation, after operation i.e.
It can be obtained that equivalent width, depth are consistent, surface is smooth, vertical standardized expansion joint and sealing groove.
According to Figure 15-17, the casting concrete in the two sides space that core pulling template 12 and inner wall backform 20 are formed, shape
At the concrete cabinet 22 of side, is poured by concrete equiblibrium mass distribution device 21 and concrete is poured into 22 liang of concrete cabinet
Extract core pulling template 12 while the top plan of side out；It finally removes width control positioning strut rail 19 and connects steel bushing 14 with template,
Concreting rises 30cm after 4 hours, by inner wall backform 20；Act inner wall backform 20 in 5-6 hours, i.e., in completion piping lane
Mould construction.
According to Figure 18, piping lane cover board construction technology installs lift adjustment bracket mould on reinforced concrete floor 18
26 1 groups of plate, specification 8*6m=48m；Its height is adjusted, top and the piping lane design drawing of lift adjustment rack template 26 are made
In piping lane inner roof wall having a size of same level, i.e. the piping lane top water horizontal line of layout design；In lift adjustment rack template 26
Collision avoiding caster 25 is installed at both ends, withstands on collision avoiding caster 25 in the two sides inner wall of concrete cabinet 22；Calking is stretched pull rod 24 to pacify
In the demoulding technology groove 36 of lift adjustment rack template 26, fastens lift adjustment rack template 26 and calking stretches pull rod 24
Connecting screw stretches pull rod 24 by calking and adjusts lift adjustment rack template 26, makes its two sides inner wall with concrete cabinet 22
It mutually coincide, the monolithic stability degree of template, intensity is made to be greater than the impact force generated when casting concrete, when casting concrete does not leak
Slurry.
According to Figure 19-22, installation demoulding tank cover plate 27, at the top of piping lane foundation trench 32 place reinforcing bar 37 and with two sides
Reinforcing bar binding；Outboard template 29 is installed on the outside of the concrete cabinet 22 of two sides, places wanting for expansion joint length by layout design
It asks, outboard template positioning device 30 is installed in the two sides of lift adjustment rack template 26；Pass through outboard template 29 and lift adjustment
In the space that rack template 26 is formed, casting concrete forms the concrete cabinet 22 at the top of piping lane；Pass through hand pulling type concrete
The coagulation rammed earth that walking beam 28 will pour, removal demould 27 screw of tank cover plate, removal fasten lift adjustment rack template 26 with
Connecting screw between outboard template 29 puts down lift adjustment rack template 26 with big stroke jack 23, and will be by lift adjustment
Rack template 26 and outboard template 29 move to next job position.
In sandy gravel stratum piping lane construction technology provided by the invention, by using core pulling template, core pulling mould assembly locating support,
Flexible positioning support, inner wall backform, lift adjustment rack template and outboard template etc. pass through simple and quick mounting process,
Realize following technology and construction advantage：
1, there is the characteristics of simple secured, fast accurate, installation and speed of application are 18-20 times of conventional method, more main
What is wanted is that formwork is all completed by common civilian worker.Thoroughly get rid of the bottleneck of engineering constraint progress due to mud carpenter is in short supply.Together
The manpower consumption of Shi Zhimo is the 6-8% of conventional method formwork hereinafter, significantly reducing project cost, the labour of unit in charge of construction
Nervous problem is also thoroughly eliminated；Ensured in technique safety in production with it is superior in quality, at present various underground pipe galleries apply
Work efficiency rate is most fast, and quality, precision controlling are best, the minimum construction technology technology of construction cost.
2, template is full steel structure, and cavity dimension is precisely stable and firm, within continuous formwork assembly and disassembly 500-800 times not
Deformation, it is lossless.A large amount of branch mold materials can be saved compared with traditional formwork support process.Construction cost is greatly reduced.
3, the box mould of backform because size it is accurate, monolithic stability, generation when intensity, rigidity fully meet casting and compacting of concrete
Impact force and pressure, thoroughly eradicated the accident potential of spillage and quick-fried mould.Through field measurement, the electric power for thering is backform technology to construct
Each portion's scale error such as top surface, ground, metope, height, the width of piping lane is within the good criteria of 2-4mm.Concrete table
Face aesthetic finish has reached the fine quality of clear-water concrete, is that traditional construction method is unable to reach.
4, suitable for the buried concrete box culvert class building of the construction of heavy excavation needed for urban infrastructure, such as inverted-siphon, list
Road electric power pipe trench, rainwater pipe trench, sewage pipe trench etc..And the pipe gallery for merging above-mentioned several functions.16 meters multiply 5
Meter or less specification, arbitrarily change combination according to functional requirement.
5, concrete pouring construction technique is carried out than traditional concreting by using hand pulling type vibratory concrete beam
Construction technology improves 92% working efficiency.
Claims (7)
1. a kind of sandy gravel stratum piping lane construction technology, which is characterized in that follow the steps below construction：
It is excavated in two times in gravel overburden layer and forms piping lane foundation trench (32), using the side for carrying out piping lane external mold construction when excavating
Method successively carries out the construction of piping lane internal model and the construction of piping lane cover board, and in the interior molding of piping lane foundation trench (32), several are fastenedly connected mixed
Solidifying soil cabinet (22), forms sandy gravel stratum piping lane；
Wherein the construction of concrete cabinet (22) includes the following steps：
Step 1: being laid with cement stabilizing layer (4) in piping lane foundation trench (32) bottom excavated, and put on cement stabilizing layer (4)
Set concrete spacer pad (3)；
Step 2: core pulling template (12) lifting is put into piping lane foundation trench (32), it is solid by core pulling mould assembly locating support (11)
It is scheduled on concrete spacer pad (3)；Flexible positioning support (13) are installed at core pulling template (12) center of two sides, and top is installed
Mouth positioning spacer (7) adjusts the height of core pulling template (12) to connect steel bushing (14) for adjacent pumping by template behind same level face
Core mold plate (12) connection；Core pulling template (12) and adjacent piping lane foundation trench (32) inner wall gap are backfilled to the first work by gravel
Core pulling mould assembly locating support (11) is taken out in industry face (5)；In the space that cement stabilizing layer (4) and core pulling template (12) are formed
It is laid with concrete cushion (16)；
Step 3: reinforcing bar (37) binding to form piping lane tank floor is made on the surface of the concrete cushion (16), and
Reinforcing bar (37) binding marginal position in bottom surface makes reinforcing bar (37) binding for forming side along the vertical direction, then to the bottom
In reinforcing bar (37) binding in face casting concrete and solidify form reinforced concrete floor (18)；In reinforced concrete floor (18)
The construction of waterstop (17) is completed between the reinforcing bar (37) of side；
Step 4: removing positioning spacer (7) suitable for reading and flexible positioning support (13), inner wall backform (20) is lifted to the steel into side
In the space that muscle (37) and reinforced concrete floor (18) are formed；It is horizontal in the top of inner wall backform (20) installation width control positioning
It keeps off (19), the vertical direction of inner wall backform (20) installs expansion joint positioning device (G-1)；In core pulling template (12) and inner wall backform
(20) casting concrete in the two sides space formed, forms the concrete cabinet (22) of side, while extracting core pulling template (12) out；
It finally removes width control positioning strut rail (19) and connects steel bushing (14) with template, rise inner wall backform (20)；
Step 5: installing lift adjustment rack template (26) on reinforced concrete floor (18) and adjusting its height, make to go up and down
The top of adjusting bracket template (26) is with the piping lane inner roof wall in piping lane design drawing having a size of same level；In lift adjustment branch
Collision avoiding caster (25) are installed at frame template (26) both ends, withstand on collision avoiding caster (25) in the two sides inner wall of concrete cabinet (22)；
Calking is stretched pull rod (24) to be mounted in the demoulding technology groove (36) of lift adjustment rack template (26), pull rod is stretched by calking
(24) lift adjustment rack template (26) are adjusted, the two sides inner wall of itself and concrete cabinet (22) is made mutually to coincide；
Step 6: installation demoulding tank cover plate (27), reinforcing bar (37) are placed at the top of piping lane foundation trench (32) and are tied up with the reinforcing bar of two sides
It pricks；After installation outboard template (29) on the outside of the concrete cabinet (22) of two sides, by outer side template (29) and lift adjustment
Casting concrete in the space that rack template (26) is formed forms the concrete cabinet (22) at the top of piping lane；Outside is removed later
Template (29) and demoulding tank cover plate (27) remove lift adjustment rack template (26) to next work by big stroke jack (23)
Industry position.
2. sandy gravel stratum piping lane construction technology according to claim 1, which is characterized in that the piping lane foundation trench (32) is for the first time
The earthing layer depth of fortune is dug from natural ground (200) to 12- under the horizontal alignment down toward the piping lane cover board bottom that drawing is demarcated
13cm respectively overs 1.5-2 meters to two sides according to the width that piping lane cabinet drawing is demarcated as cutting depth absolute altitude, width, this face is made
For the first work surface (5) of piping lane cabinet construction.
3. sandy gravel stratum piping lane construction technology according to claim 1, which is characterized in that the second of the piping lane foundation trench (32)
It is more than the bed course bottom absolute altitude demarcated of layer cutting depth to piping lane drawing, the second work surface (6) that this face is constructed as piping lane cabinet；
The excavation width of second work surface (6) respectively overs 10cm to two sides for cabinet outer diameter, and sloping coefficient regards live gravel bonding
It spends depending on size.
4. sandy gravel stratum piping lane construction technology according to claim 1, which is characterized in that the piping lane foundation trench (32) excavates length
Degree is that 1.2-1.3 times of piping lane cabinet length is best.
5. sandy gravel stratum piping lane construction technology according to claim 1, which is characterized in that the concrete cushion (16), steel
Reinforced concrete bottom plate (18), concrete cabinet (22) carry out concreting by hand pulling type vibratory concrete beam (28) and apply
Work.
6. sandy gravel stratum piping lane construction technology according to claim 1, which is characterized in that (20) one groups of the inner wall backform is
8*6m=48m；Enter construction area by crane lifting, behind concrete pouring construction 4 hours for completing side concrete cabinet (22),
Inner wall backform (20) is risen into 30cm, acts inner wall backform (20) in 5-6 hours.
7. sandy gravel stratum piping lane construction technology according to claim 1, which is characterized in that the lift adjustment rack template
(26) one groups are 8*6m=48m.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107718243A (en) * | 2017-11-17 | 2018-02-23 | 九州职业技术学院 | A kind of assembled underground pipe gallery hypomere producing device and preparation method |
| CN108755753A (en) * | 2018-05-25 | 2018-11-06 | 中国十七冶集团有限公司 | A kind of Pipe rack and its construction method of Collapsible Loess District and Soft Soil |
| CN109083193A (en) * | 2018-09-01 | 2018-12-25 | 四川省场道工程有限公司 | Airport pipe gallery standard digital template construction method |
| CN112627539B (en) * | 2020-12-09 | 2022-09-20 | 中国葛洲坝集团第一工程有限公司 | Four-hole inverted siphon top plate double-layer steel bar lifting, positioning and fixing device and construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020089689A (en) * | 2001-05-23 | 2002-11-30 | 주식회사유신코퍼레이션 | The method for carrying out of underground structure object using a fiberglass reinforced plastics and a hydraulic jack |
| CN105220626A (en) * | 2015-10-27 | 2016-01-06 | 安徽水安建设集团股份有限公司 | Steel form device and the construction method that combines with outer steel mould plate thereof in a kind of self-propelled |
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2017
- 2017-03-23 CN CN201710179655.3A patent/CN106988339B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020089689A (en) * | 2001-05-23 | 2002-11-30 | 주식회사유신코퍼레이션 | The method for carrying out of underground structure object using a fiberglass reinforced plastics and a hydraulic jack |
| CN105220626A (en) * | 2015-10-27 | 2016-01-06 | 安徽水安建设集团股份有限公司 | Steel form device and the construction method that combines with outer steel mould plate thereof in a kind of self-propelled |
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