CN108301414A - A kind of shearing slot structure and its construction method for underwater concrete back cover - Google Patents
A kind of shearing slot structure and its construction method for underwater concrete back cover Download PDFInfo
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- CN108301414A CN108301414A CN201810272379.XA CN201810272379A CN108301414A CN 108301414 A CN108301414 A CN 108301414A CN 201810272379 A CN201810272379 A CN 201810272379A CN 108301414 A CN108301414 A CN 108301414A
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- Prior art keywords
- angle steel
- building enclosure
- rebound
- flush pipe
- buried
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
Abstract
The present invention relates to a kind of shearing slot structures and its construction method for underwater concrete back cover, it includes the foundation pit excavated in ground to shear slot structure, building enclosure is surrounded with around foundation pit, it further include angle steel pair, rebound and pre-buried flush pipe, angle steel is circumferentially positioned on the inside of building enclosure interval, and two angle steel relative spacings setting of angle steel centering, between the upper and lower every being embedded with two rows of anchor bars corresponding with angle steel in building enclosure, anchor bar is stretched out close to one end of angle steel pair after building enclosure to be fixedly connected with corresponding angle steel, between two angle steel that rebound is arranged in angle steel pair, pre-buried flush pipe is arranged in building enclosure, and multiple apopores are equipped with towards rebound to corresponding position with angle steel in pre-buried flush pipe.The shearing slot structure of the present invention so that there is reliable connection between bottom concrete and building enclosure, ensure the watertightness of bottom concrete and the hole huge water pressure in bottom can be born.
Description
Technical field
The present invention relates to underground engineering design and technical field of construction more particularly to a kind of for underwater concrete back cover
Shear slot structure and its construction method.
Background technology
In the numerous cities in China, generally development has the artesian aquifer and the higher weak soil of water content of multi-layered thickness stabilization
Layer.With the development of urban transportation and the underground space, the excavation of deep big foundation pit has been directed to these layer of position.Residing for foundation pit
Environmental condition becomes increasingly complex, and requires to be increasingly stringenter to the control of foundation pit deformation, therefore in Deep Excavation, not only need
Hole bottom artesian water is punished with prevent it is prominent gush destruction and jeopardize engineering safety, also to avoid pressure-bearing water cure is improper from causing
The outer earth's surface in hole or building enclosure self-deformation is excessive causes damages to periphery buildings or structures.In engineering practice generally use every
Water, decompression or hole bottom reinforce the measures such as back cover or many kinds of measures is used in combination method reduces artesian water water level, realizes base
Dry excavation is cheated to ensure construction safety and quality, and prevents the various environmental problems caused by simple precipitation.Above-mentioned measure pair
Cutting depth is smaller and water seal curtain to completely penetrate through the base pit engineering of artesian aquifer be applicable, had accumulated suitable work already
Journey experience.But big to cutting depth, artesian aquifer thickness and buried depth greatly cause water seal curtain to be difficult to completely penetrate through and hold
The ultra-deep foundation pit engineering that there are extremely sensitive buildings or structures within the scope of pressure water-bearing layer, influence of foundation excavation, is held using aforementioned
Pressure water Disposal Measures and arrangement and method for construction have been difficult to meet requirement of engineering, or even can cause various engineering accidents.At artesian water
Set improper and design mistake it is unreasonable caused by foundation pit accident it is commonplace.
Invention content
The technical problem to be solved by the present invention is to solve the above shortcomings of the prior art and to provide one kind being used for underwater coagulation
The shearing slot structure and its construction method at grave bottom.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of shearing slot knot for underwater concrete back cover
Structure, including excavate and be surrounded with the building enclosure being above the ground level around the foundation pit on ground, the foundation pit, further include angle steel
To, rebound and pre-buried flush pipe, the angle steel is circumferentially positioned on the inside of the building enclosure interval, and the angle steel centering
The setting of two angle steel relative spacings, and be located at the both sides up and down on ground, the building enclosure interior building enclosure is between the upper and lower
Every being embedded with two rows of anchor bars corresponding with the angle steel, the anchor bar is close to described in the stretching of one end of the angle steel pair
Be fixedly connected with the corresponding angle steel after building enclosure, two angle steel that the rebound is arranged in the angle steel pair it
Between, the pre-buried flush pipe is arranged in the building enclosure on the inner wall of the angle steel side, and in the pre-buried flush pipe
Multiple apopores, the pre-buried flush pipe and external high pressure water are equipped with towards the rebound to corresponding position with the angle steel
Source is connected to, and the high pressure water flow sprayed from the apopore can be rinsed cutting process to the rebound.
Before into the foundation pit, casting concrete forms bottom concrete, first by the pre-buried flush pipe and external high pressure
Water source is connected to, and the high pressure water flow sprayed from the apopore is rinsed cutting process to the rebound, waits for the rebound
Into the foundation pit, casting concrete forms bottom concrete again after removing.With pouring for bottom concrete, two institutes
It states and is full of concrete in the region between angle steel, the building enclosure is made to form entirety with the bottom concrete.
The beneficial effects of the invention are as follows：The shearing slot structure for underwater concrete back cover of the present invention, using going along with sb. to guard him
Angle steel pair is designed on the inside of structure, and rebound is internally set to reserve space on the inside of the building enclosure in angle steel, and
By being embedded on the outside of building enclosure the anchor bar in soil matrix by the angle steel to further fixing, will first be poured in foundation pit mixed
Solidifying soil simultaneously forms bottom concrete, then again rinses the rebound by pre-buried flush pipe and cuts and remove, then to foundation pit
Interior casting concrete, and the region between two angle steel of the angle steel centering is full of concrete, it can make back cover in this way
There is reliable connection between concrete and building enclosure, ensure watertightness and energy of the building enclosure with bottom concrete joint face
Bear the hole huge water pressure in bottom.
Based on the above technical solution, the present invention can also be improved as follows：
Further：Several main reinforcements, the angle steel and every main ribs are vertically arranged at intervals on the inside of the building enclosure
It is fixedly connected with.
The advantageous effect of above-mentioned further scheme is：By the way that the angle steel is fixedly connected with main ribs, it is ensured that
The angle steel can obtain firm support, improve the structural strength of shearing slot, and be not in dystopy during construction, protect
The high pressure water flow for demonstrate,proving the apopore outgoing in the pre-buried flush pipe can be by the rebound between the upper and lower angle steel smoothly
Cleaning cutting.
Further：The pre-buried flush pipe is vertically provided between adjacent two main ribs, the pre-buried flush pipe
Top is higher than the top of main ribs, and difference in height between the two is not less than 50cm.
The advantageous effect of above-mentioned further scheme is：By the way that the pre-buried flush pipe is vertically provided at described in adjacent two
Between main reinforcement, adjacent two main ribs can be made to be effectively protected the pre-buried flush pipe, and will not occupy
Extra space, easy for construction, structure is beautiful, by the top that the top of the pre-buried flush pipe is set above to main ribs
End, with facilitate can be in order to which the construction of pre-buried flush pipe, another party can be so that the pre-buried flush pipe interior energy be formed enough
Hydraulic pressure, so that smoothly the rebound is cut.
Further：The pre-buried flush pipe is steel pipe or pvc pipe.
The advantageous effect of above-mentioned further scheme is：Steel pipe or pvc pipe structural strength are larger, can bear larger hydraulic pressure,
High pressure water flow convenient for being emitted from the apopore, which can smoothly rinse the rebound, to be cut and removes, convenient for subsequently applying
Work.
Further：The angle steel is to horizontally disposed, and two angle steel of the angle steel centering and two rows institute
State anchor bar and be symmetricly set on ground both sides up and down, and two rows of anchor bar stretch out one end of the building enclosure with
Two angle steel correspondences of the angle steel centering are welded and fixed.
The advantageous effect of above-mentioned further scheme is：By by two angle steel of the angle steel centering and upper and lower two
Arrange the anchor bar and be symmetricly set on ground both sides up and down, can entirely to shear slot withstand forces it is more balanced, entirely
Structural strength is larger.
Further：The distance between two described angle steel of the angle steel centering are no more than the bottoming concrete thickness
Half.
The advantageous effect of above-mentioned further scheme is：Between two angle steel by controlling the angle steel centering away from
From the half no more than the bottoming concrete thickness, it is ensured that the intensity of entire bottom concrete so that back cover is mixed
Solidifying soil coordinates the angle steel and anchor bar preferably to support the building enclosure.
Further：The rebound includes wood wool board and/or plastic foamboard, and the wood wool board and/or foamed plastics
The plate angle steel corresponding with upper and lower both sides is fixedly connected.
The advantageous effect of above-mentioned further scheme is：Wood wool board and plastic foamboard light weight, density ratio water are small, pass through height
It forms powder after pressure flow flushing cutting and swims in the water surface and flow away, can make to rinse cutting by institute by high pressure water flow in this way
It states wood wool board and/or plastic foamboard is removed totally, be convenient for subsequent construction.
The present invention also provides a kind of construction methods of the shearing slot structure for underwater concrete back cover, including such as
Lower step：
Step 1：In ground excavation pit, and the building enclosure being above the ground level around setting around the foundation pit, and
Around setting angle steel pair on the inside of the building enclosure, wherein relative spacing is arranged two angle steel of the angle steel centering up and down, and
It is located at the both sides up and down on ground；
Step 2：Between the upper and lower every being embedded with two rows of anchor bars corresponding with the angle steel, and general in the building enclosure
The anchor bar is stretched out close to one end of the angle steel pair after the building enclosure to be fixedly connected with the corresponding angle steel；
Rebound is set between two angle steel of the angle steel centering on the inside of building enclosure；
Step 3：The pre-buried flush pipe being connected to external high pressure water source, and the pre-buried punching are set in the building enclosure
It washes angle steel described in Guan Shangyu and multiple apopores is equipped with towards the rebound to corresponding position；
Step 4：It is passed through high-pressure water to the pre-buried flush pipe, the high pressure water flow sprayed from the apopore is to the mistake
Cab apron is rinsed cutting process, until rebound removing finishes；
Step 5：The casting concrete into the foundation pit, up to being full of concrete in the region between two angle steel,
And it solidifies and forms bottom concrete.
The construction method of the shearing slot structure for underwater concrete back cover of the present invention, sets using on the inside of building enclosure
Angle steel pair is counted, and rebound is internally set to reserve space on the inside of the building enclosure, and by being embedded in angle steel
Anchor bar on the outside of building enclosure in soil matrix to further fixing, first by casting concrete in foundation pit and forms the angle steel
Then the rebound is rinsed by pre-buried flush pipe and cuts and remove, then pours coagulation into foundation pit by bottom concrete again
Soil, and the region between two angle steel of the angle steel centering is full of concrete, it can make bottom concrete in this way and enclose
There is reliable connection between protection structure, ensure the watertightness of bottom concrete and the hole huge water pressure in bottom can be born.
Description of the drawings
Fig. 1 is the structural schematic diagram of the shearing slot structure for underwater concrete back cover of the present invention；
Fig. 2 is the Section A-A schematic diagram of Fig. 1；
Fig. 3 is the section B-B schematic diagram of Fig. 2；
Fig. 4 is the pre-buried flush pipe structural schematic diagram of the present invention.
In attached drawing, parts list represented by the reference numerals are as follows：
1, building enclosure, 2, angle steel pair, 3, rebound, 4, pre-buried flush pipe, 5, anchor bar, 6, bottom concrete；
11, main reinforcement, 21, angle steel, 31, wood wool board, 32, plastic foamboard.
Specific implementation mode
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of shearing slot structure for underwater concrete back cover, including excavate in
The foundation pit on ground is surrounded with the building enclosure 1 being above the ground level around the foundation pit, further includes angle steel pair 2,3 and of rebound
More pre-buried flush pipes 4, the interval of the angle steel pair 2 are circumferentially positioned at 1 inside of the building enclosure, and in the angle steel pair 2
Two 21 relative spacing of angle steel settings, and the both sides up and down on ground are located at, 1 about 1 interior building enclosure of the building enclosure
Interval is embedded with two rows of anchor bars 5 corresponding with the angle steel 21, and the anchor bar 5 is close to one end of the angle steel pair 2
It is fixedly connected with the corresponding angle steel 21 after stretching out the building enclosure 1, the rebound 3 is arranged in the angle steel pair 1
Two angle steel 21 between, the pre-buried flush pipe 4 is arranged in the building enclosure 1 on 21 side inner wall of the angle steel,
And multiple apopores 41, institute are equipped with towards the rebound 3 in the pre-buried flush pipe 4 with 2 corresponding position of the angle steel pair
It states pre-buried flush pipe 4 to be connected to external high pressure water source, and the high pressure water flow sprayed from the apopore 41 can be to the rebound 3
It is rinsed cutting process.
It is first that the pre-buried flush pipe 4 and outside is high before into the foundation pit, casting concrete forms bottom concrete 6
Water source connection is pressed, the high pressure water flow sprayed from the apopore 41 is rinsed cutting process to the rebound 3, waits for the mistake
The removing of cab apron 3 finishes, then the casting concrete into the foundation pit forms bottom concrete 6, with pouring for bottom concrete 6,
It is full of concrete in region between two angle steel 21, so that the building enclosure 1 is formed with the bottom concrete 6 whole
Body.
The shearing slot structure for underwater concrete back cover of the present invention designs angle steel pair using in 1 inside of building enclosure
2, and rebound 3 is set so that 1 inside of the building enclosure is reserved space in angle steel pair 2, and gone along with sb. to guard him by being embedded in
Anchor bar 5 in 1 outside soil matrix of structure further fixes the angle steel pair 2, in the casting concrete shape into the foundation pit
Before bottom concrete 6, first the pre-buried flush pipe 4 is connected to external high pressure water source, the height sprayed from the apopore 41
Pressure flow is rinsed cutting process to the rebound 3, waits for pouring into the foundation pit again after the rebound 3 is removed
Concrete forms bottom concrete 6.With pouring for bottom concrete 6, i.e. full of mixed in the region between two angle steel
Solidifying soil, makes the building enclosure 1 form entirety with the bottom concrete 6, can make bottom concrete 6 in this way and go along with sb. to guard him knot
There is reliable connection between structure 1, ensure the watertightness of bottom concrete 6 and the hole huge water pressure in bottom can be born.
In the above-described embodiments, the inside of the building enclosure 1 is vertically arranged at intervals with several main reinforcements 11, the angle steel 21 with
Every main ribs 11 are fixedly connected with.By the way that the angle steel 21 is fixedly connected with main ribs 11, it is ensured that the angle
Steel 21 can obtain firm support, improve the structural strength of shearing slot, and be not in dystopy during construction, ensure institute
The high pressure water flow for stating the outgoing of apopore 41 in pre-buried flush pipe 4 can be smooth by the rebound 3 between the upper and lower angle steel 21
Cleaning cutting.
In practice, the quantity of main ribs 11 and density of setting (or interval) need to be according to excavation of foundation pit depth and Rock And Soil objects
It manages mechanical property and calculates determination, also need two angle steel in the thickness and the angle steel pair 2 according to bottom concrete 6
The distance between 21 are adjusted.
Preferably, in the above-described embodiments, the pre-buried flush pipe 4 be vertically provided at adjacent two main ribs 11 it
Between.Between the pre-buried flush pipe 4 is vertically provided at adjacent two main ribs 11, it can make described in adjacent two
Main reinforcement 11 is effectively protected the pre-buried flush pipe 4, and will not occupy extra space, easy for construction, architectonic beauty
It sees.
It should be pointed out that in practice, the quantity of the pre-buried flush pipe 4 can also be according to the bottom concrete 6
The distance between two described angle steel 21 in thickness and the angle steel pair 2 are adjusted.For example, adjacent two pre-buried punchings
Setting one, two can be spaced or more with main ribs 11 by washing between pipe 4.
It is highly preferred that in the above-described embodiments, the top of the pre-buried flush pipe 4 is higher than the top of main ribs 11, and
Difference in height between the two is not less than 50cm.By the way that the top of the pre-buried flush pipe 4 is set above main ribs 11
Top, with facilitate can be in order to which the construction of pre-buried flush pipe 4, another party can be so that 4 interior energy of pre-buried flush pipe be formed
Enough hydraulic pressure, smoothly to cut the rebound 3.
In the embodiment of the present invention, the pre-buried flush pipe 4 is steel pipe or pvc pipe.Steel pipe or pvc pipe structural strength are larger,
Larger hydraulic pressure can be born, the high pressure water flow convenient for being emitted from the apopore 41 can smoothly cut the flushing of the rebound 3
It cuts and removes, be convenient for subsequent construction.
Preferably, in the above-described embodiments, the angle steel pair 2 is horizontally disposed, and two angles in the angle steel pair 2
Anchor bar 5 described in steel 21 and two rows is symmetricly set on ground both sides up and down, and two rows of anchor bars 5 stretch out
One end of the building enclosure 1 is corresponding with two angle steel 21 in the angle steel pair 2 to be welded and fixed.By by the angle steel
Ground or more both sides are symmetricly set on to anchor bar 5 described in two angle steel 21 and two rows in 2, can be made
Entirely shearing slot endurance it is more balanced, total intensity is larger.
It is highly preferred that in the above-described embodiments, the specific setting quantity of angle steel pair 2 and rebound 3 can be according to back cover coagulation
The thickness of soil 6 carries out calculating determination.In general, the distance between two angle steel 21 in the angle steel pair 2 are not more than institute
State the half of 6 thickness of bottom concrete.By controlling the distance between two described angle steel 21 in the angle steel pair 2 no
More than the half of 6 thickness of the bottom concrete, it is ensured that the intensity of entire bottom concrete 6 so that back cover coagulation
6 cooperation of the soil angle steel 21 and anchor bar 5 preferably support the building enclosure 1.
In the embodiment of the present invention, the rebound 3 preferably includes wood wool board 31 and/or plastic foamboard 32, and described
Wood wool board 31 and/or corresponding with the upper and lower both sides angle steel of plastic foamboard 32 21 are fixedly connected.When the rebound 3 is wood
When filament plate 31 or plastic foamboard 32, the quantity of the wood wool board 31 or plastic foamboard 32 can be one piece can or polylith, and
When the wood wool board 31 or plastic foamboard 32 are polylith, wood wool board 31 or the inside and outside fitting of plastic foamboard 32 are set described in polylith
Between setting two angle steel 21 in the angle steel pair 1, and polylith wood wool board 31 or plastic foamboard 32 with upper and lower both sides pair
The angle steel 21 answered is fixedly connected.When the rebound 3 is wood wool board 31 and plastic foamboard 32,31 He of the wood wool board
Between two angle steel 21 that the inside and outside fitting of the plastic foamboard 32 is arranged in the angle steel pair 1, and 31 He of the wood wool board
Corresponding with the upper and lower both sides angle steel 21 of the plastic foamboard 32 is fixedly connected.32 matter of wood wool board 31 and plastic foamboard
Amount is light, density ratio water is small, is flowed away by forming powder after high pressure water flow flushing cutting and swimming in the water surface, can make to lead in this way
It crosses high pressure water flow flushing cutting to remove the wood wool board 31 and/or plastic foamboard 32 totally, is convenient for subsequent construction.
The present invention also provides a kind of construction methods of the shearing slot structure for underwater concrete back cover, including such as
Lower step：
Step 1：In ground excavation pit, and the building enclosure 1 being above the ground level around setting around the foundation pit, and
1 inside of the building enclosure is around setting angle steel pair 2, wherein two angle steel, about 21 relative spacing in the angle steel pair 2 is set
It sets, and is located at the both sides up and down on ground；
Step 2：Between the upper and lower every being embedded with two rows of anchor bars 5 corresponding with the angle steel 21 in the building enclosure 1,
And the anchor bar 5 is stretched out close to one end of the angle steel pair 2 after the building enclosure 1 and is consolidated with the corresponding angle steel 21
Fixed connection；It is located between two angle steel 21 in the angle steel pair 2 in 1 inside of building enclosure and rebound 3 is set；
Step 3：The pre-buried flush pipe 4 being connected to external high pressure water source is set in the building enclosure 1, and described pre-buried
In flush pipe 4 multiple apopores 41 are equipped with towards the rebound 3 with 2 corresponding position of the angle steel pair；
Step 4：It is passed through high-pressure water to the pre-buried flush pipe 4, the high pressure water flow sprayed from the apopore 41 is to institute
It states rebound 3 and is rinsed cutting process, until the removing of the rebound 3 finishes；
Step 5：The casting concrete into the foundation pit, up to being full of coagulation in the region between two angle steel 21
Soil, and solidify and form bottom concrete 6.
The construction method of the shearing slot structure for underwater concrete back cover of the present invention, using in 1 inside of building enclosure
Angle steel pair 2 is designed, and rebound 3 is set so that 1 inside of the building enclosure is reserved space in angle steel pair 2, and is passed through
The anchor bar 5 being embedded in 1 outside soil matrix of building enclosure further fixes the angle steel pair 2, will first be poured in foundation pit mixed
Solidifying soil simultaneously forms bottom concrete 6, then again rinses the rebound 3 by pre-buried flush pipe 4 and cuts and remove, then to base
Casting concrete in hole, and the region between two angle steel 21 in the angle steel pair 2 is full of concrete, it can make in this way
There is reliable connection between bottom concrete 6 and building enclosure 1, ensure the watertightness of bottom concrete 6 and hole bottom can be born
Huge water pressure.
In the above-described embodiments, the step rebound 3 is wood wool board 31 and/or plastic foamboard 32, and the wood wool
Plate 31 and/or corresponding with the upper and lower both sides angle steel of plastic foamboard 32 21 are fixedly connected.Wood wool board 31 and plastic foamboard
32 light weights, density ratio water are small, are flowed away by forming powder after high pressure water flow flushing cutting and swimming in the water surface, can be made in this way
It obtains to rinse to cut by high pressure water flow and removes the wood wool board 31 and/or plastic foamboard 32 totally, be convenient for subsequent construction.
Preferably, in the above-described embodiments, 1 inside of the building enclosure is provided with several vertical spaced main reinforcements
11, the angle steel 21 is fixedly connected with every main ribs 11.By the way that the angle steel 21 is fixedly connected with main ribs 11,
It can ensure that the angle steel 21 can obtain firm support, improve the structural strength of shearing slot, and will not during construction
There is dystopy, ensure high pressure water flow that the apopore 41 in the pre-buried flush pipe 4 is emitted can will the upper and lower angle steel 21 it
Between rebound 3 smoothly clean cutting.
In the present invention, the pre-buried flush pipe 4 is vertically provided between adjacent two main ribs 11.By will be described pre-
It buries flush pipe 4 to be vertically provided between adjacent two main ribs 11, adjacent two main ribs 11 can be made to described pre-
It buries flush pipe 4 to be effectively protected, and extra space will not be occupied, easy for construction, structure is beautiful.
It is highly preferred that the difference in height between the top and the top of main ribs 11 of the pre-buried flush pipe 4 is not less than
50cm.By the way that the top of the pre-buried flush pipe 4 to be set above to the top of main ribs 11, with facilitate can be in order to pre-buried
The construction of flush pipe 4, another party can be so that 4 interior energy of pre-buried flush pipe form enough hydraulic pressure, so as to smoothly by institute
Rebound 3 is stated to be cut.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of shearing slot structure for underwater concrete back cover, including excavate the ring around the foundation pit on ground, the foundation pit
It is provided around the building enclosure (1) being above the ground level, it is characterised in that:Further include that angle steel is pre-buried to (2), rebound (3) and more
Flush pipe (4), the angle steel is circumferentially positioned on the inside of the building enclosure (1) (2) interval, and the angle steel is in (2)
Relative spacing is arranged two angle steel (21) up and down, and is located at the both sides up and down on ground, in the building enclosure (1) between the upper and lower
Every being embedded with two rows of anchor bars (5) corresponding with the angle steel (21), the anchor bar (5) is close to the angle steel to (2)
One end stretch out the building enclosure (1) and be fixedly connected afterwards with the corresponding angle steel (21), the rebound (3) is arranged in institute
Angle steel is stated between two angle steel (21) in (1), pre-buried flush pipe (4) setting is in the building enclosure (1) close to institute
State on the inner wall of angle steel (21) side, and in the pre-buried flush pipe (4) with the angle steel to (2) corresponding position towards the mistake
Cab apron (3) is equipped with multiple apopores (41), and the pre-buried flush pipe (4) is connected to external high pressure water source, and from the apopore
(41) high pressure water flow sprayed can be rinsed cutting process to the rebound (3).
2. being used for the shearing slot structure of underwater concrete back cover according to claim 1, it is characterised in that:The building enclosure
(1) inside is vertically arranged at intervals with several main reinforcements (11), and the angle steel (21) is fixedly connected with every main ribs (11).
3. being used for the shearing slot structure of underwater concrete back cover according to claim 2, it is characterised in that:The pre-buried flushing
Pipe (4) is vertically provided between adjacent two main ribs (11), and the top of the pre-buried flush pipe (4) is higher than main ribs
(11) top, and difference in height between the two is not less than 50cm.
4. being used for the shearing slot structure of underwater concrete back cover according to claim 3, it is characterised in that:The pre-buried flushing
It is steel pipe or pvc pipe to manage (4).
5. being used for the shearing slot structure of underwater concrete back cover according to claim 1, it is characterised in that:The angle steel pair
(2) be horizontally disposed with, and the angle steel in (2) two angle steel (21) and two rows described in anchor bar (5) it is equal
Ground both sides up and down are symmetricly set on, and two rows of anchor bars (5) stretch out one end of the building enclosure (1) and the angle
Steel is welded and fixed two angle steel (21) correspondences in (2).
6. being used for the shearing slot structure of underwater concrete back cover according to claim 5, it is characterised in that:The angle steel pair
(2) the distance between two described angle steel (21) in are not more than the half of the bottom concrete (6) thickness.
7. according to the shearing slot structure for being used for underwater concrete back cover described in any one of claim 1 to 6, it is characterised in that:Institute
It includes wood wool board (31) and/or plastic foamboard (32) to state rebound (3), and the wood wool board (31) and/or plastic foamboard
(32) angle steel (21) corresponding with upper and lower both sides is fixedly connected.
8. a kind of construction method of shearing slot structure such as claim 1-7 any one of them for underwater concrete back cover,
It is characterised in that it includes following steps：
Step 1：In ground excavation pit, and the building enclosure (1) being above the ground level around setting around the foundation pit, and in institute
It states on the inside of building enclosure (1) around setting angle steel to (2), wherein the angle steel is opposite up and down to two angle steel (21) in (2)
Interval setting, and it is located at the both sides up and down on ground；
Step 2：Between the upper and lower every being embedded with two rows of anchor bars corresponding with the angle steel (21) in the building enclosure (1)
(5), and by the anchor bar (5) close to the angle steel to the one end of (2) stretch out the building enclosure (1) afterwards with corresponding institute
Angle steel (21) is stated to be fixedly connected；It is arranged between two angle steel (21) in (2) positioned at the angle steel on the inside of building enclosure (1)
Rebound (3)；
Step 3：The pre-buried flush pipe (4) that setting is connected to external high pressure water source in the building enclosure (1), and it is described pre-buried
Multiple apopores (41) are equipped with towards the rebound (3) to (2) corresponding position with the angle steel in flush pipe (4)；
Step 4：It is passed through high-pressure water to the pre-buried flush pipe (4), the high pressure water flow sprayed from the apopore (41) is to institute
It states rebound (3) and is rinsed cutting process, until the rebound (3) removing finishes；
Step 5：The casting concrete into the foundation pit, up to being full of concrete in the region between two angle steel (21),
And it solidifies and forms bottom concrete (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810272379.XA CN108301414A (en) | 2018-03-29 | 2018-03-29 | A kind of shearing slot structure and its construction method for underwater concrete back cover |
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| CN201810272379.XA CN108301414A (en) | 2018-03-29 | 2018-03-29 | A kind of shearing slot structure and its construction method for underwater concrete back cover |
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| CN108301414A true CN108301414A (en) | 2018-07-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109024924A (en) * | 2018-09-01 | 2018-12-18 | 哈尔滨鸿盛房屋节能体系研发中心 | The steel plate chamber structure and connecting structure connected by cast-in-place concrete |
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