CN107246148A - Thin wall concrete is to drawing screw water sealing structure and sealing technique - Google Patents
Thin wall concrete is to drawing screw water sealing structure and sealing technique Download PDFInfo
- Publication number
- CN107246148A CN107246148A CN201710443659.8A CN201710443659A CN107246148A CN 107246148 A CN107246148 A CN 107246148A CN 201710443659 A CN201710443659 A CN 201710443659A CN 107246148 A CN107246148 A CN 107246148A
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- plastic film
- reaming
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/007—Plugs to close openings in forms' surface
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
- E04G17/0657—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts fully recoverable
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- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a kind of thin wall concrete to drawing screw water sealing structure, including thin wall concrete is arranged on to drawing the plastic film capicitor in screw hole；In front of plastic film capicitor to draw screw hole be set to before reaming section, plastic film capicitor rear to drawing screw hole to be set to rear reaming section, the end of preceding reaming section is provided with water-swellable filler block, preceding reaming section, rear reaming section and plastic film capicitor plugging grouting material.The invention also discloses construction method of the above-mentioned thin wall concrete to drawing screw water sealing structure, first step installs plastic ripple pipe sleeve and to drawing screw；Second step is to pour and form removal；Third step is reaming；Four steps is to install water-swellable filler block；5th step is filling grouting material；6th step is, if any underground water, to increase by a water-swellable filler block in land side.Thin wall concrete is to drawing screw water sealing structure both to have higher performance resistant to pressure, it may have higher vertebration property and durability, and is easy to construction.
Description
Technical field
The present invention relates to the realm of building construction, more particularly to thin wall concrete is to drawing screw water sealing structure and sealing technique.
Background technology
In concrete engineering construction, split bolt is used between two side templates（Also known as Screw arbor with nut at both-ends or to draw screw）It is right
It is conventional technological means that wall medial and lateral template, which carries out drawknot, to drawing screw to bear coagulation earth lateral pressure and other loads,
Ensure that the rigidity and stability of interior outboard template meet design requirement.
In thin wall concrete engineering, to drawing screw to socket form technology, there are the following problems in current construction market：It is right
The a whole set of processing technology thereof quality requirement height of screw sealing is drawn, installation difficulty is difficult form removal；For thin wall concrete, mix
Solidifying soil wall is thin, to drawing screw short, seepage paths（Seepage paths refers to the permeation pathway of water）It is short, easily cause seepage after the long-term corrosion of screw mandrel；
Because concrete wall is thin, reinforcing bar is close, pour vibrate when easily caused by cross to shake to draw screw sealing steel loop and expansion loop destruction or
Because to drawing leakage at screw sealing steel loop, causing seepage.
The method of the patching to drawing screw used for thin wall concrete formwork reinforcement in current construction market
Carry out looking into new and analysis, it is found that water-stopping method mainly includes two major classes：
The first kind：To drawing thread part to be embedded in concrete, by metallic water stop sheet and expansion loop sealing.Such water-stopping method
Advantage is that water resistant Compressive Strength is big（The rise of hydraulic pressure not easily leads to further seepage by contrast, but can not solve original ooze
Leakage）.Shortcoming has：Difficulty of construction is big, progress is slow, construction cost is high, poor durability, easily because reasons in structure produces seepage etc..
Equations of The Second Kind：Pre-buried plastic bushing, to drawing screw to extract turnover out, wire drawing hole leans on water-swellable sealing putty and swollen
Buckle starches sealing.Advantage is that construction cost is low to drawing screw to be used in turn；Water-swellable putty is anticorrosive, ageing-resistant, durable
Property is good；It is easy for installation；The form removal cycle is short, can improve form cycling rate and accelerating construction progress.Have the disadvantage that water resistant Compressive Strength is small, easily
The seepage caused by hydraulic pressure.
The content of the invention
It is an object of the invention to provide a kind of thin wall concrete to drawing screw water sealing structure, both with higher resistant to pressure
Seepage property, it may have higher vertebration property and durability, and it is easy to construction.
To achieve the above object, thin wall concretes of the invention are to drawing screw water sealing structure to include being arranged on thin-walled coagulation
Soil is to drawing the plastic film capicitor in screw hole；Using upstream face before to, in front of plastic film capicitor to drawing before screw hole is set to
Reaming section, the diameter of preceding reaming section is more than the diameter of plastic film capicitor and the rearward end of preceding reaming section is provided with pre-large post-small preceding receipts
Shrinkage cavity section, the preceding diameter for shrinking hole section rear end it is identical with plastic film capicitor external diameter and with plastic film capicitor is corresponding connects；
Plastic film capicitor rear to drawing screw hole to be set to rear reaming section, the diameter of rear reaming section is more than the straight of plastic film capicitor
Footpath and rear reaming section leading section be provided with pre-small post-large after-contraction hole section；
The end of preceding reaming section is provided with water-swellable filler block, water-swellable filler block and preceding reaming section end and its preceding shrinkage hole
Section is adapted；Closure has grouting material, the plastics at water-swellable filler block rear in preceding reaming section in front of water-swellable filler block
Being blocked in rear reaming section in bellows and has grouting material.
The point diameter of water-swellable filler block is identical with the internal diameter of preceding reaming section, the rear end diameter of water-swellable filler block
Less than plastic film capicitor internal diameter and stretch into plastic film capicitor.
20 millimeters of the water-swellable filler block length, a diameter of 16 millimeters of water-swellable filler block rear end, water-swellable stops
The internal diameter of a diameter of 22 millimeters of the middle front part of water plug, preceding reaming section and rear reaming section is 22 millimeters, the preceding milli of reaming segment length 100
Rice, rear 20 millimeters of reaming segment length.
The invention also discloses above-mentioned thin wall concrete to draw screw water sealing structure construction technology, successively according to the following steps
Carry out：
First step is plastic film capicitor to be penetrated between the template of front and rear sides and to drawing screw；
First will be to drawing screw to penetrate rigid plastics bellows, then by plastic film capicitor and to drawing screw to penetrate front and rear sides together
In the pattern hole of template；Plastic ripple length of tube is more than 20 millimeters of concrete broken face thickness；The internal diameter of plastic film capicitor is more than spiral shell
2-4 millimeters of shank diameter；
Second step is to pour thin wall concrete and form removal,
After template acceptance(check), using conventional method casting concrete, after maintenance to predetermined strength of mould stripping from plastic film capicitor
Extract out to drawing screw, then remove front side template and rear side template；
Third step is reaming, and electric hand drill is used to drawing spiral shell in the upstream face i.e. front end face of the thin wall concrete structure poured
Silk hole carries out reaming, makes to drawing 4 millimeters of the aperture increases of screw hole, and processes preceding reaming section and its preceding contraction hole section；
Electric hand drill is used to drawing screw hole to carry out reaming, making to drawing screw hole in the back side of the thin wall concrete poured
4 millimeters of aperture increases, and process rear reaming section and its after-contraction hole section；
Four steps is to install water-swellable filler block；
Before operating personnel are checked the quality of water-swellable filler block being made using water expandable waterstop and checked reaming section and
Quality of hole section is shunk before it, from upstream face by water-swellable filler block reached the last with hand hammer and tack plain bar reaming section and
Hole section is shunk before it and is stoppered, the rearward end and preceding contraction hole section for making water-swellable filler block fit and water-swellable filler block
Rear end enter plastic film capicitor front end；The diameter of tack plain bar is less than 2 millimeters of the diameter of preceding reaming section；
5th step is filling grouting material；
Added water mix grouting material, and the control ratio of mud is less than 0.2, and grouting material is injected into preceding reaming section, rear reaming section and its after-contraction
Hole section and plastic film capicitor, before clogging, be compacted from front to back using diameter tack plain bar of 2 millimeters less than preceding reaming section
Grouting material in reaming section, expands after being clogged, be compacted from back to front using diameter tack plain bar of 2 millimeters less than rear reaming section
Grouting material in hole section and its after-contraction hole section and plastic film capicitor, from preceding reaming section front end and rear reaming section rear end to grouting
Material progress is floating, finally pastes adhesive tape respectively in preceding reaming section front end and rear reaming section rear end and is conserved.
A diameter of 12-14 millimeters to drawing screw in first step, before plastic film capicitor is stretched into forward in first step
10 millimeters of side template and extend rearward into rear side 10 millimeters of template；The internal diameter of plastic film capicitor is 16 millimeters and outer in first step
Footpath is 18 millimeters；
20 millimeters of water-swellable filler block length in second step, a diameter of 16 millimeters of the rear end of water-swellable filler block and it is preceding in
Anterior a diameter of 22 millimeters.
The present invention has the advantage that：
The thin wall concrete of the present invention is to drawing screw water sealing structure, and performance resistant to pressure can reach more than 0.1MPa, with higher
Vertebration property and durability, and be easy to construction.Because water sealing structure is on the basis of original material for pouring thin wall concrete
On, water-swellable filler block and grouting material are increase only, cost is very low.
Reaming section before the present invention is provided with, the plastic film capicitor of reaming section before rejecting, enables grouting material preferably and mixed
Solidifying soil is combined, and improves the stability of water sealing structure；Because the diameter of water-swellable filler block is more than the diameter of plastic film capicitor, so that
Step-like structure is formed between preceding reaming section and plastic film capicitor（Preceding contraction hole section）, it is preceding contraction hole section not only change infiltration
Direction, improves anti-permeability strength, additionally it is possible to transmit water pressure using in upstream face, makes to permeate after water-swellable filler block rearward displacement
Passage is pressed closer and closer, improves anti-permeability strength.If without preceding reaming section, water-swellable filler block, which does not just resist, pushes away measure, fills
Slurry and water-swellable filler block slide backward to destroy leakage preventing structure in the presence of upstream face transmits water pressure.
Present invention employs plastic film capicitor, in the outer wall formation corrugated of plastic film capicitor after concreting, equally,
Outer wall after grouting material closure in plastic film capicitor also forms corrugated.Compared to no plastic film capicitor or using smooth surface pvc pipe,
Grouting material in the present invention is more interlocked securely by plastic film capicitor with thin wall concrete, forms self-locking structure,
The ability of resistance upstream face hydraulic pressure is improved, water surface movable of being supported or opposed to the structure in drawing screw hole in the presence of hydraulic pressure is prevented；By
In the bellows-shaped of plastic film capicitor, seepage paths is extended, thin wall concrete is further increased to drawing screw water sealing structure to resist
Ooze ability.
Present invention employs grouting material, grouting material is used as finished product plugging material, it is to avoid match ratio manual operation error, from
And ensure that to drawing screw hole closure quality；Due to the characteristic of grouting material microdilatancy, plugging material and concrete is set preferably to tie
It is combined, improves the anti-permeability strength to drawing screw hole；The characteristics of due to grouting material high intensity（Generally higher than 50MPa）, improve
Intensity to drawing screw hole closure, it is ensured that thin wall concrete is to drawing the durability and stability of screw water sealing structure.
Present invention employs tack plain bar, 20 millimeters of the diameter of tack plain bar, it is ensured that tack light round steel
Muscle and water-swellable filler block have larger contact area, ensure integrally to reach the last water-swellable filler block reaming section.
The construction technology of the present invention is easy to operate, without high capital equipment or material, can efficiently produce thin-walled and mix
Solidifying soil is to drawing screw water sealing structure, it is ensured that thin wall concrete is to drawing the construction quality of screw water sealing structure, structural strength and impervious
Performance.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is to drawing the structural representation after screw hole reaming；
Fig. 4 is to drawing the structural representation after screw hole reaming when having underground water；
Fig. 5 is the structural representation of present invention when there is water thin wall concrete both sides.
Embodiment
In Fig. 1 and Fig. 2 label 2 indicate for the water at thin wall concrete structure 3.
As shown in Figures 1 to 5, thin wall concrete of the invention is to drawing screw water sealing structure to include being arranged on thin wall concrete
To drawing the plastic film capicitor 1 in screw hole；Plastic film capicitor is that its specific bellows-shaped is no longer shown in detail in prior art, figure.
Using upstream face before to the front of, plastic film capicitor 1 to draw screw hole be set to before reaming section 4, preceding reaming section 4
Diameter is more than the diameter of plastic film capicitor 1 and the rearward end of preceding reaming section 4 is provided with pre-large post-small preceding contraction hole section 5, preceding to shrink
The diameter of the rear end of hole section 5 is identical with the external diameter of plastic film capicitor 1 and is connected with the correspondence of plastic film capicitor 1；Certainly, plastic film capicitor
1 external diameter is identical with the internal diameter to drawing screw hole.
The rear of plastic film capicitor 1 to drawing screw hole to be set to rear reaming section 6, the diameter of rear reaming section 6 is more than plastics ripple
The leading section of the diameter of line pipe 1 and rear reaming section 6 is provided with pre-small post-large after-contraction hole section 7；
The end of preceding reaming section 4 is provided with water-swellable filler block 8, water-swellable filler block 8 and preceding reaming 4 ends of section and its preceding receipts
Shrinkage cavity section 5 is adapted；Closure has the grouting material 9 that the ratio of mud is less than 0.2 in the preceding reaming section 4 in the front of water-swellable filler block 8, meets
The grouting material for having the ratio of mud to be less than 0.2 is blocked in the plastic film capicitor 1 at the rear of water expansion water-stop plug 8 and in rear reaming section 6
9。
Wherein, water-swellable filler block 8 is made up of water-swellable material, such as water expandable waterstop（It is circular）.
The point diameter of water-swellable filler block 8 is identical with the internal diameter of preceding reaming section 4, the rear end of water-swellable filler block 8
Diameter is less than the internal diameter of plastic film capicitor 1 and stretches into plastic film capicitor 1.
The water-swellable filler block 8 grows 20 millimeters, a diameter of 16 millimeters of the rear end of water-swellable filler block 8, water-swellable
The internal diameter of a diameter of 22 millimeters of the middle front part of filler block 8, preceding reaming section 4 and rear reaming section 6 is 22 millimeters, preceding reaming section 4
It is long 100 millimeters, rear 20 millimeters of the length of reaming section 6.
Fig. 5 show the structural representation of present invention when there is water thin wall concrete both sides.
The invention also discloses above-mentioned thin wall concrete to draw screw water sealing structure construction technology, successively according to the following steps
Carry out：
First step is plastic film capicitor 1 to be penetrated between the template of front and rear sides and to drawing screw；
First will be to drawing screw to penetrate rigid plastics bellows 1, then by plastic film capicitor 1 and to drawing screw to penetrate front and rear two together
In the pattern hole of side template；It is respectively provided with using to drawing in the template of screw drawknot for wearing the pattern hole to drawing screw, is existing
Technology, not shown template and pattern hole.Plastic ripple length of tube is more than 20 millimeters of concrete broken face thickness；Before plastic film capicitor 1
End penetrates front template and its rear end penetrates rear pattern plate, so as to occur spillage when preventing casting concrete at pattern hole；Plastics ripple
The internal diameter of line pipe 1 is more than 2-4 millimeters of screw diameter；
Second step is to pour thin wall concrete and form removal,
After template acceptance(check), conventional method casting concrete is used between the template of front and rear sides, is conserved strong to predetermined form removal
Extracted out after degree from plastic film capicitor 1 to drawing screw, then remove front side template and rear side template；
Third step is reaming, and electric hand drill is used to drawing spiral shell in the upstream face i.e. front end face of the thin wall concrete structure poured
Silk hole carries out reaming, makes to drawing 4 millimeters of the aperture increases of screw hole to 22 millimeters of aperture, 100 millimeters of counterbore depth, drill bit at this
Reaming section 4 and its preceding contraction hole section 5 before being processed naturally by its own shape during drilling；
Electric hand drill is used to drawing screw hole to carry out reaming, making to drawing screw in the back side of the thin wall concrete structure poured
4 millimeters to 22 millimeters of the aperture increases in hole, 20 millimeters of counterbore depth at this, drill bit is processed naturally when creeping into by its own shape
Go out rear reaming section 6 and its after-contraction hole section 7；
Four steps is to install water-swellable filler block 8；
Operating personnel check the quality for the water-swellable filler block 8 being made using the rounded water expandable waterstop in section and inspection
Reaming section 4 and its preceding quality for shrinking hole section 5 before looking into, from upstream face（I.e. from front to back）Water-swellable filler block 8 is used into hand hammer
Reach the last reaming section 4 with tack plain bar and its preceding contraction and stoppered hole section 5, make the rearward end of water-swellable filler block 8 with
Preceding contraction hole section 5 fits and the rear end of water-swellable filler block 8 enters the front end of plastic film capicitor 1；Tack plain bar it is straight
Footpath is less than 2 millimeters of the diameter of preceding reaming section 4, is 20 millimeters.So, tack plain bar and water-swellable sealing can both be ensured
Plug 8 has larger contact area, ensures, by the overall reaming section 4 of reaching the last of water-swellable filler block 8, tack light can be prevented again
The situation that round bar is in contact with preceding reaming section 4, causes the hole wall of preceding reaming section 4 to be broken, 4 breakages of reaming section cause before preventing
Leak；
5th step is filling grouting material 9；
Added water mix grouting material 9, and the control ratio of mud is less than 0.2, and grouting material 9 is injected into preceding reaming section 4, rear reaming section 6 and thereafter
Hole section 7 and plastic film capicitor 1 are shunk, the tack plain bar of 4 two millimeters of preceding reaming section is less than using diameter（Tack light round steel
20 millimeters of muscle diameter）From front to back（I.e. from outside to inside）Grouting material 9 before filling, compacting in reaming section 4, after being less than using diameter
Reaming 6 two millimeters of tack plain bar of section clogs from back to front, be compacted after reaming section 6 and its after-contraction hole section 7 and plastics
Grouting material 9 in bellows 1, with trowel from preceding reaming section 4 front ends and rear reaming section 6 rear ends grouting material 9 is carried out it is floating, finally
Adhesive tape is pasted respectively and is conserved in preceding reaming 4 front ends of section and 6 rear ends of rear reaming section.
One-way waterproof structure when above scheme background is without underground water, land side need to carry out two-way anti-when meeting underground water
Water.Specific method is that rear reaming section depth is changed into 40 millimeters, then squeezes into a milli of water-swellable filler block 20 again from land side
Rice, is finally blocked with grouting material again.
A diameter of 12-14 millimeters to drawing screw in first step, preferably 14 millimeters, plastic ripple in first step
Pipe 1 stretches into forward 10 millimeters of the template in front side and extends rearward into 10 millimeters of template of rear side；Plastic film capicitor 1 is interior in first step
Footpath is 16 millimeters and external diameter is 18 millimeters；
20 millimeters of water expandable waterstop plug in second step, a diameter of 16 millimeters of the rear end of water-swellable filler block 8 and preceding
A diameter of 22 millimeters of middle front part；
Observed in the past using pre-buried plastic bushing and sealing putty and expansive mortar as water sealing structure through 72 hours, it is most
Big water resistant Compressive Strength is 0.05 MPa, it is impossible to meet the requirement of engineering.
After the water sealing structure and water-stopping method of the present embodiment, inventor has carried out experiment resistant to pressure（Water column method）.
To drawing the impervious simulated experiment of screw hole：One group of concrete impervious testing mold 6 is taken, in bottom hole.Above as upstream face, bottom surface
As back side, simulation thin wall concrete is to drawing screw sealing technique to test.By vertically installing plastics at die trial center
Bellows and to drawing screw, dress C30W6 concrete, form removal, reaming, installs water-swellable filler block, grouting material closure, laboratory
Learnt after the flows such as impermeability test, land side starts infiltration after 15 hours, continue to observe and pressurize, after 40 hours, due to
The expansion extruding of water-swellable filler block 8, infiltration stops, continuing to be forced into 0.8MPa, do not seep water, seepage-resistant grade is more than
W6。
Field test：Sampling 6 is to drawing screw hole, and adjustment water-column is to 8.5 meters（0.085MPa）, observe 20 hours
The land side of thin wall concrete structure starts infiltration afterwards.After 41 hours, extrude, ooze because water-swellable filler block 8 expands
Water stops.There is not wet stain after 56 hours.Water-column is adjusted to 10 meters（0.1 MPa）, observe 72 hours, do not occur
Wet stain, illustrates that the water sealing structure of the present invention and the performance resistant to pressure of sealing technique reach 0.1 MPa.
Reaming section before the present invention is provided with, therefore the diameter of water-swellable filler block is greater than the diameter of plastic film capicitor,
So as to form step-like structure between preceding reaming section and plastic film capicitor（Preceding contraction hole section）, the thin-walled poured can be utilized
Concrete structure directly supports water-swellable filler block from the front to the back, prevents grouting material and water-swellable filler block from being passed in upstream face
Slide backward to destroy infiltration energy in the presence of the pressure come.If without preceding reaming section, water-swellable filler block is just
Water-swellable filler block can not be directly supported in the longitudinal direction.
Present invention employs plastic film capicitor, the pouring material of thin wall concrete enter plastic film capicitor outer wall ripple it
In, plastic film capicitor is firmly combined together with thin wall concrete material.Similarly, the inwall and grouting material of plastic film capicitor
Also it is firmly combined together.Compared to no plastic film capicitor or light pipe is used, the grouting material in the present invention passes through plastic ripple
Pipe is more firmly combined together with thin wall concrete, and structural strength more preferably, more resistant against the hydraulic pressure of upstream face, is prevented to drawing
Structure in screw hole supports or opposes water surface movable in the presence of hydraulic pressure.
The construction technology of the present invention is easy to operate, without high capital equipment or material, can efficiently produce thin-walled and mix
Solidifying soil is to drawing screw water sealing structure, it is ensured that thin wall concrete is to drawing the construction quality of screw water sealing structure, structural strength and impervious
Aqueous energy.
The diameter of tack plain bar is less than 2 millimeters of the diameter of preceding reaming section, can both ensure tack plain bar and chance
Water expansion water-stop plug have larger contact area, ensure by water-swellable filler block integrally reach the last reaming section, can prevent again
The situation that only tack plain bar is in contact with preceding reaming section, causes the hole wall of preceding reaming section to be broken, reaming section is broken before preventing
Damage causes infiltration.
Above example is only used to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacement, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
Among sharp claimed range.
Claims (5)
1. thin wall concrete is to drawing screw water sealing structure, it is characterised in that：
Including being arranged on thin wall concrete to drawing the plastic film capicitor in screw hole；Using upstream face to be preceding to before plastic film capicitor
Side is set to preceding reaming section to drawing screw hole, and the diameter of preceding reaming section is more than after the diameter of plastic film capicitor and preceding reaming section
End is provided with pre-large post-small preceding contraction hole section, and the diameter of preceding contraction hole section rear end is identical with plastic film capicitor external diameter and and plastics
Bellows correspondence is connected；
Plastic film capicitor rear to drawing screw hole to be set to rear reaming section, the diameter of rear reaming section is more than the straight of plastic film capicitor
Footpath and rear reaming section leading section be provided with pre-small post-large after-contraction hole section；
The end of preceding reaming section is provided with water-swellable filler block, water-swellable filler block and preceding reaming section end and its preceding shrinkage hole
Section is adapted；Closure has grouting material, the plastics at water-swellable filler block rear in preceding reaming section in front of water-swellable filler block
Being blocked in rear reaming section in bellows and has grouting material.
2. thin wall concrete according to claim 1 is to drawing screw water sealing structure, it is characterised in that：Water-swellable filler block
Point diameter and preceding reaming section internal diameter it is identical, the rear end diameter of water-swellable filler block is less than the internal diameter of plastic film capicitor simultaneously
Stretch into plastic film capicitor.
3. thin wall concrete according to claim 1 is to drawing screw water sealing structure, it is characterised in that：The water-swellable stops
20 millimeters of water plug length, a diameter of 16 millimeters of water-swellable filler block rear end, a diameter of the 22 of the middle front part of water-swellable filler block
The internal diameter of millimeter, preceding reaming section and rear reaming section is 22 millimeters, preceding 100 millimeters of reaming segment length, rear 20 millimeters of reaming segment length.
4. thin wall concrete described in claim 1 is to the construction technology of drawing screw water sealing structure, it is characterised in that successively by following
Step is carried out：
First step is plastic film capicitor to be penetrated between the template of front and rear sides and to drawing screw；
First will be to drawing screw to penetrate rigid plastics bellows, then by plastic film capicitor and to drawing screw to penetrate front and rear sides together
In the pattern hole of template；Plastic ripple length of tube is more than 20 millimeters of concrete broken face thickness；The internal diameter of plastic film capicitor is more than spiral shell
2-4 millimeters of shank diameter；
Second step is to pour thin wall concrete and form removal,
After template acceptance(check), using conventional method casting concrete, after maintenance to predetermined strength of mould stripping from plastic film capicitor
Extract out to drawing screw, then remove front side template and rear side template；
Third step is reaming, and electric hand drill is used to drawing spiral shell in the upstream face i.e. front end face of the thin wall concrete structure poured
Silk hole carries out reaming, makes to drawing 4 millimeters of the aperture increases of screw hole, and processes preceding reaming section and its preceding contraction hole section；
Electric hand drill is used to drawing screw hole to carry out reaming, making to drawing screw hole in the back side of the thin wall concrete poured
4 millimeters of aperture increases, and process rear reaming section and its after-contraction hole section；
Four steps is to install water-swellable filler block；
Before operating personnel are checked the quality of water-swellable filler block being made using water expandable waterstop and checked reaming section and
Quality of hole section is shunk before it, from upstream face by water-swellable filler block reached the last with hand hammer and tack plain bar reaming section and
Hole section is shunk before it and is stoppered, the rearward end and preceding contraction hole section for making water-swellable filler block fit and water-swellable filler block
Rear end enter plastic film capicitor front end；The diameter of tack plain bar is less than 2 millimeters of the diameter of preceding reaming section；
5th step is filling grouting material；
Added water mix grouting material, and the control ratio of mud is less than 0.2, and grouting material is injected into preceding reaming section, rear reaming section and its after-contraction
Hole section and plastic film capicitor, before clogging, be compacted from front to back using diameter tack plain bar of 2 millimeters less than preceding reaming section
Grouting material in reaming section, expands after being clogged, be compacted from back to front using diameter tack plain bar of 2 millimeters less than rear reaming section
Grouting material in hole section and its after-contraction hole section and plastic film capicitor, from preceding reaming section front end and rear reaming section rear end to grouting
Material progress is floating, finally pastes adhesive tape respectively in preceding reaming section front end and rear reaming section rear end and is conserved.
5. construction technology according to claim 4, it is characterised in that：A diameter of 12- to drawing screw in first step
14 millimeters, plastic film capicitor stretches into forward 10 millimeters of the template in front side and extends rearward into 10 millimeters of template of rear side in first step；
The internal diameter of plastic film capicitor is 16 millimeters in first step and external diameter is 18 millimeters；
20 millimeters of water-swellable filler block length in second step, a diameter of 16 millimeters of the rear end of water-swellable filler block and it is preceding in
Anterior a diameter of 22 millimeters.
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| CN201710443659.8A CN107246148B (en) | 2017-06-13 | 2017-06-13 | Water stopping structure and water stopping process for thin-wall concrete split screw |
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| CN201710443659.8A CN107246148B (en) | 2017-06-13 | 2017-06-13 | Water stopping structure and water stopping process for thin-wall concrete split screw |
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| CN107246148B CN107246148B (en) | 2022-06-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107778029A (en) * | 2017-10-31 | 2018-03-09 | 中国冶集团有限公司 | The concrete curing method of pipe laying in structure |
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| CN203296383U (en) * | 2013-05-24 | 2013-11-20 | 中国华冶科工集团有限公司 | Plugging rod for split bolt holes |
| CN103711205A (en) * | 2014-01-13 | 2014-04-09 | 任斌向 | Waterproof wall split bolt hole plugging structure and construction method thereof |
| CN105568928A (en) * | 2015-12-30 | 2016-05-11 | 中国电建集团北京勘测设计研究院有限公司 | Construction method of sealed joint of composite geomembrane face dam |
| CN106639313A (en) * | 2017-02-21 | 2017-05-10 | 潍坊市宏源防水材料有限公司 | Rubber water stopping plug and construction method for plugging and stopping water of opposite-pull bolt hole of underground outer wall template |
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| DE29506421U1 (en) * | 1995-04-13 | 1996-08-08 | THERA Patent GmbH & Co. KG Gesellschaft für industrielle Schutzrechte, 82229 Seefeld | Seal for closing a hole |
| CN203296383U (en) * | 2013-05-24 | 2013-11-20 | 中国华冶科工集团有限公司 | Plugging rod for split bolt holes |
| CN103711205A (en) * | 2014-01-13 | 2014-04-09 | 任斌向 | Waterproof wall split bolt hole plugging structure and construction method thereof |
| CN105568928A (en) * | 2015-12-30 | 2016-05-11 | 中国电建集团北京勘测设计研究院有限公司 | Construction method of sealed joint of composite geomembrane face dam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107778029A (en) * | 2017-10-31 | 2018-03-09 | 中国冶集团有限公司 | The concrete curing method of pipe laying in structure |
| CN107778029B (en) * | 2017-10-31 | 2021-04-02 | 中国一冶集团有限公司 | Concrete curing method for buried pipe in structure |
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| CN107246148B (en) | 2022-06-21 |
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