CN108442371A - One kind stake combination casing structure and its construction method suitable for Soft Clay water - Google Patents
One kind stake combination casing structure and its construction method suitable for Soft Clay water Download PDFInfo
- Publication number
- CN108442371A CN108442371A CN201810472978.6A CN201810472978A CN108442371A CN 108442371 A CN108442371 A CN 108442371A CN 201810472978 A CN201810472978 A CN 201810472978A CN 108442371 A CN108442371 A CN 108442371A
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- CN
- China
- Prior art keywords
- pipe culvert
- pile casting
- steel pile
- stake
- interior casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
Abstract
The invention discloses one kind suitable for Soft Clay water, and casing structure and its construction method, including steel pile casting, interior casing pipe culvert are combined in stake；The steel pile casting is hollow-core construction, and interior casing pipe culvert is armored concrete pipe culvert；The steel pile casting is the outermost layer for combining casing structure, and interior casing pipe culvert is arranged in the steel pile casting hollow area and as the internal layer of combination casing structure, and the interior casing pipe culvert is arranged in steel pile casting inner layer but is not bonded with steel pile casting；The interior casing pipe culvert by it is multiple be in charge of contain it is segmented form, and 2-section pipe up and down is connected by fixed connection apparatus and is contained, so that each pipe culvert closely connect casing pipe culvert in formation, the interior casing pipe culvert end is equipped with symmetrical suspension hook arc-shaped slot；Interior casing pipe culvert is equipped with the duct of the whole section pipe culvert of multiple perforations.Main structure construction of the present invention is convenient, and the steel pile casting rate of recovery is high, economizes on resources, and environmental pollution is small.
Description
Technical field
Auxiliary equipment constructing device and its construction method in constructing the present invention relates to a kind of pile foundation, in particular relate to
And one kind stake combination casing structure and its construction method suitable for Soft Clay water.
Background technology
For the Bridge Pile Foundation Construction in soft soil foundation region, common ancillary measure technology is such as：Compare patent document
CN105649012A upper-soft lower-hard grounds subway station building enclosure drilled pile construction method is utilized in construction drill stake institute of institute
Locate to bury steel pile casting in the soft soil layer of position, steel pile casting is thus made to become disposable consumables, increases cost input
With the waste of steel, steel pile casting is left to meeting oxidation and rusting in water environment and is polluted to water quality throughout the year, influences environmental protection.Just
Presently, construction industry, which extracts steel pile casting to have enough to meet the need to utilize again, has also come out many new processes and new technology, but due to calculating
The height of cost is restricted with construction speed, cannot effectively be promoted the use of.
One kind is simple not yet for the current country, does not influence construction speed can guarantee construction quality, can also make steel pile casting again
Repeatedly have enough to meet the need the construction equipment utilized and construction method.
Invention content
The object of the present invention is to provide in view of the deficiencies of the prior art, provide one kind to be applicable in Soft Clay water
Stake combination casing structure and its construction method, can be in place of overcome the deficiencies in the prior art, practical construction is simple, operation side
Just, construction cost is low, the recyclable turnover again of steel pile casting is made to utilize, is environmentally protective, save material.
In order to solve the above-mentioned technical problem, technical scheme is as follows：One kind stake group suitable for Soft Clay water
Close casing structure, including steel pile casting, interior casing pipe culvert；The steel pile casting is hollow-core construction, and the interior casing pipe culvert is mixed for reinforcing bar
Solidifying soil pipe culvert；The steel pile casting is the outermost layer for combining casing structure, and the interior casing pipe culvert setting is hollow in the steel pile casting
In region and as the internal layer of combination casing structure, the interior casing pipe culvert is arranged in steel pile casting inner layer but is not glued with steel pile casting
It closes；
The interior casing pipe culvert by it is multiple be in charge of contain it is segmented form, and 2-section pipe up and down is connected by fixing device and is contained, made each
Pipe culvert closely connects casing pipe culvert in formation, and the interior casing pipe culvert end is equipped with symmetrical suspension hook arc-shaped slot；In described
Casing pipe culvert is equipped with the duct of the whole section pipe culvert of multiple perforations.
Compared with prior art, the present invention is used installs armored concrete pipe culvert work between steel pile casting and pile foundation concrete
For interior casing pipe culvert, and interior casing pipe culvert is arranged in steel pile casting inner layer but is not bonded with steel pile casting, and its object is to work as drilled pile
After the completion of perfusion, steel pile casting can be extracted and realize that turnover utilizes again for steel pile casting recycling.
Preferably, the fixed connection apparatus, it is included in the small steel plate of every section pipe culvert each pre-buried setting up and down, it is described small
One end of steel plate passes through dowel and pipe culvert inner concrete anchor connection.
The fixed connection apparatus, include seamless connection corresponding with the small steel plate that upper and lower 2-section pipe is contained flange plate up and down and
Sheet rubber between upper and lower flange plate is set, and is arranged at intervals with multiple mounting holes on flange plate, the flange plate up and down is logical
Bolt is crossed to tighten together.
Compared with prior art, the present invention is made using the fixed connection apparatus connection technological means that 2-section pipe is contained up and down
The pipe culvert obtained between each other closely connects, and uniform force, stability is stronger, is not easy to cave in during concrete perfusion.
Preferably, the interior casing pipe culvert is axially arranged with four ducts along tube wall, upper and lower holes road is symmetrical, left and right two
Duct is symmetrical, and four duct diagonal line intersections are respectively formed one 120 ° and one 60 ° of angle.
Compared with prior art, the present invention is symmetrical using upper and lower two duct, and two ducts of left and right are symmetrical, and pair in four ducts
Linea angulata is respectively formed the technological means at one 120 ° and one 60 ° of angle, and interior casing pipe culvert can be made to realize and be accurately positioned, and protected
The whole stability of construction is demonstrate,proved.
Preferably, being provided through reinforcing bar in the duct respectively reserved in interior casing pipe culvert and being consolidated with steel pile casting
Welding, connects into an entirety.
Compared with prior art, the present invention is by by reinforcing bar and steel pile casting firm welded so that stability under loading of the present invention, no
It needs to depend on external force position.
Preferably, the symmetrical suspension hook arc-shaped slot of the interior casing pipe culvert end is chamfer trapezoidal shape.
Compared with prior art, the symmetrical suspension hook arc-shaped slot of casing pipe culvert end is chamfer trapezoidal shape in the present invention,
So that sunpender is locked when casing pipe culvert in suspention, avoids unexpected landing.
Preferably, the steel pile casting bottom is placed at the top of supporting course, top connect integral with operation platform.
Preferably, the steel pile casting cylinder outer tip end is equipped with wing plate, the wing plate upper surface and steel pile casting upper surface
Concordantly, the wing plate encompasses a ring-type outside cylinder, and the wing plate is fixed on by welding outside steel pile casting cylinder
Portion top.
Compared with prior art, the present invention is equipped with wing plate in steel pile casting outer tip end, increases steel pile casting and operation platform
Forced area and horizontal friction force, can effectively prevent casing occur caving in.
Preferably, the wing plate upper surface is equipped with arc shaped handle.
Compared with prior art, the present invention is equipped with arc shaped handle on wing plate surface, convenient for protecting steel after completing to be perfused
The extraction of cylinder realizes that recycling turnover utilizes.
Preferably, being coated with protective filmy layer outside the steel pile casting cylinder.
Compared with prior art, the present invention is coated with protective filmy layer outside steel pile casting cylinder so that steel pile casting be not easy by
Oxidation and rusting.
Preferably, the interior casing pipe culvert wall thickness is 8cm.
Preferably, the steel pile casting thickness is 10mm.
The present invention uses a kind of construction method of stake combination casing structure water suitable for Soft Clay, including walks as follows
Suddenly：
（1）Preparation：Prefabricated reinforced concrete pipe culvert, 8~15cm of wall thickness,（Often section pipe culvert length is according to construction equipment or ground
Matter situation adjusts tube coupling length）, multiple ducts are got through inside every section pipe culvert, and one is cut in pipe culvert end both sides symmetric position
To suspension hook arc-shaped slot；
（2）It is laid at the top of steel pile casting to supporting course in the center of drilled pile using vibration hammer；
（3）It is drilled to supporting course 1-2m down, mobile drill using construction drill, places reinforcing bar, and by pipe prefabricated in advance
Contain segmented decentralization to foot of hole, installation is complete, and reinforcing bar firm welded is connect integral with steel pile casting；
（4）Drilling machine is in place, continues drilling to designed elevation；
（5）The concrete of design grade is perfused to the height for meeting design standard；
（6）After concrete strength reaches codes and standards, steel pile casting is extracted, construction is continued cycling through.
Preferably, 50 ~ 100cm of the superfilled design stake top absolute altitude.
Preferably, the concrete design strength codes and standards are 85%.
In conclusion having the advantages that compared with the background technology, the present invention
1, itself stability under loading of the invention, need not depend on external force position, avoid complexity, the construction behaviour of construction technology
Make it is difficult, need to depend on the drawbacks such as external force position, be conducive to the normal construction of drilled pile and that steel pile casting is pulled out be suitable
Profit construction；
2, the present invention ensure that construction quality and the safety of stake in the case where not influencing construction speed, and increase steel pile casting
Turnover frequency with save material, and reduce construction cost；
3, the present invention have it is simple in structure, easy for construction, applicability is wide, it is at low cost,
The small advantage of environmental pollution.
Description of the drawings
Fig. 1 is the vertical view of apparatus of the present invention；
Fig. 2 is the cross-section diagram of apparatus of the present invention；
Fig. 3 is the pipe culvert standard component detail drawing of the present invention；
Fig. 4 is the pipe culvert inner arc notch cross section drawing of the present invention；
Fig. 5 is that the pipe culvert of the present invention connects center section plan；
Fig. 6 is the pipe culvert junction drawing of the present invention；
Fig. 7 is the steel pile casting structural schematic diagram of the present invention；
In figure, 1- steel pile castings, casing pipe culvert in 2-, 21- hole to be provided, 22- suspension hook arc-shaped slots, the small steel plates of 23-, 24- bolts,
25- dowels, 3- reinforcing bars, 31, screw sheel 4, wing plate, 5, arc shaped handle, 6, protecting film.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.This specific embodiment is only the solution to the present invention
It releases, is not limitation of the present invention.
See that attached drawing 1-7, one kind stake suitable for Soft Clay water combine casing structure, including steel pile casting 1, interior casing pipe culvert
2；Steel pile casting 1 is hollow-core construction, and interior casing pipe culvert 2 is armored concrete pipe culvert；Steel pile casting 1 is the outermost of combination casing structure
Layer, interior casing pipe culvert 2 are arranged in 1 hollow area of steel pile casting and as the internal layers of combination casing structure, and interior casing pipe culvert 2 is arranged
It does not bond in 1 inner layer of steel pile casting but with steel pile casting；
In order to enable after the completion of drilled pile perfusion, steel pile casting can be extracted and realize that turnover utilizes again for steel pile casting recycling, the present invention adopts
Armored concrete pipe culvert is installed between steel pile casting and pile foundation concrete as interior casing pipe culvert, and the setting of interior casing pipe culvert exists
Steel pile casting inner layer but the technological means not bonded with steel pile casting.
Interior casing pipe culvert 2 by it is multiple be in charge of contain it is segmented form, and by fixed connection apparatus connect up and down 2-section pipe contain,
Each pipe culvert is set closely to connect casing pipe culvert 2 in formation, interior 2 end of casing pipe culvert is equipped with symmetrical suspension hook arc-shaped slot 22；It is interior
Casing pipe culvert 2 is equipped with the duct 21 of the whole section pipe culvert of multiple perforations.
Fixed connection apparatus, is included in the small steel plate 23 of every section pipe culvert each pre-buried setting up and down, and one end of small steel plate 23 is logical
Cross dowel 25 and pipe culvert inner concrete anchor connection.
Fixed connection apparatus includes the flange plate up and down of seamless connection corresponding with the small steel plate 23 that upper and lower 2-section pipe is contained and is set
The sheet rubber between upper and lower flange plate is set, and is arranged at intervals with multiple mounting holes on flange plate, upper and lower flange plate passes through bolt
24 tighten together.
In order to enable mutual pipe culvert can be connected closely, uniform force, stability is stronger, in concrete perfusion mistake
It is not easy to cave in journey, the present invention is using the fixed connection apparatus connection technological means that 2-section pipe is contained up and down.
It is set in interior casing pipe culvert 2 there are four duct 21, symmetrically, two ducts 21 of left and right are symmetrical, and four in upper and lower holes road 21
A duct diagonal line intersection is respectively formed one 120 ° and one 60 ° of angle.
It is accurately positioned to make interior casing pipe culvert realize, and ensures that the whole stability of construction, the present invention use upper and lower two
Duct is symmetrical, and two ducts of left and right are symmetrical, and the diagonal line in four ducts is respectively formed the technology at one 120 ° and one 60 ° of angle
Means.
Respectively in interior casing pipe culvert 2 reserve duct in be provided through reinforcing bar 3 and with 1 firm welded of steel pile casting, connection
At an entirety.
3 bottom of reinforcing bar is equipped with steel plate, is connect with reinforcing bar 3 by straight screw sleeve 31.
The symmetrical suspension hook arc-shaped slot 22 of interior 2 end of casing pipe culvert is chamfer trapezoidal shape.
In order to make sunpender be locked when casing pipe culvert in suspention, unexpected landing is avoided, the present invention uses to be protected inside
Bobbin contains the technological means that the symmetrical suspension hook arc-shaped slot of end set is chamfer trapezoidal shape.
1 bottom of steel pile casting is placed at the top of supporting course, and 1 top of steel pile casting connect integral with operation platform.
1 cylinder outer tip end of steel pile casting is equipped with wing plate 4, and 4 upper surface of wing plate is concordant with 1 upper surface of steel pile casting, and wing plate 4 is by piece
Shape steel plate is along cylinder outer tip end edge ring around into annulus.
In order to increase the forced area and horizontal friction force of steel pile casting and operation platform, and prevent shield
Cylinder caves in, and the present invention is equipped with wing plate in steel pile casting outer tip end.
Wing plate 4 connects with 1 cylinder outer tip end edge of steel pile casting by welding.
4 upper surface of wing plate is equipped with arc shaped handle 5.
For ease of, by the extraction of steel pile casting, realizing that recycling turnover utilizes after completing to be perfused,
Protective filmy layer 6 is coated with outside steel pile casting cylinder, the present invention is equipped with arc shaped handle on wing plate surface.
To make steel pile casting be not easy by oxidation and rusting, the present invention is coated with protective filmy layer outside steel pile casting cylinder.
Embodiment 1：
The construction method of stake combination casing structure, includes the following steps a kind of water suitable for Soft Clay：
（1）Preparation：Prefabricated reinforced concrete pipe culvert, 8~15cm of wall thickness,（Often section pipe culvert length is according to construction equipment or ground
Matter situation adjusts tube coupling length）, multiple ducts are got through inside every section pipe culvert, and one is cut in pipe culvert end both sides symmetric position
To suspension hook arc-shaped slot；
（2）It is laid at the top of steel pile casting to supporting course in the center of drilled pile using vibration hammer；
（3）It is drilled to supporting course 1-2m down, mobile drill using construction drill, places reinforcing bar, and by pipe prefabricated in advance
Contain segmented decentralization to foot of hole, installation is complete, and reinforcing bar firm welded is connect integral with steel pile casting；
（4）Drilling machine is in place, continues drilling to designed elevation；
（5）The concrete of design grade is perfused to the height for meeting design standard；
（6）After concrete strength reaches codes and standards, steel pile casting is extracted, construction is continued cycling through.
50 ~ 100cm of perfusion design stake top absolute altitude；Concrete strength design specification standard is 85%.
Comparative example 1：
（1）Steel plate is rolled into the interior casing that diameter is more than design stake holes diameter 30cm-35cm；
（2）Steel plate is rolled into the steel pile casting that diameter is more than design stake holes diameter 40cm-45cm；
（3）With drill hole of drilling machine, the steel pile casting made is put into hole by machine drill to be drilled from top to bottom to when frozen soil layer；
（4）When machine drill to be drilled crosses frozen soil layer, casing in one group of decentralization is welded between next section with welding machine when often saving interior casing decentralization
It connects；
（5）Mud is added when interior casing is high as steel pile casting, between interior casing and steel pile casting and makes interior casing and steel pile casting
Between be adhesively fixed.
Comparative example 2：
（1）Surveying setting-out：Unwrapping wire is measured to the stake position of institute's construction drill stake；
（2）Protecting tube embedding：According to the surveying setting-out in step 1 as a result, the weak soil in institute's construction drill stake present position
Steel pile casting is buried in stratum；The bottom of the steel pile casting is supported on ground consisting of hard rock and the upper end is basseted, the steel pile casting
In vertical direction to laying；
（3）Stake holes drilling construction：Drilling construction is carried out to the stake holes of institute's construction drill stake using rotary drilling rig；
（4）Reinforcing bar is transferred：Using hanging device, the reinforcing bar of institute's construction drill stake is transferred to the stake holes；
（5）Filling concrete is constructed：Filling concrete construction is carried out to institute's construction drill stake；
（6）Steel pile casting is removed：In step 5 after the completion of filling concrete construction and before institute's concrete perfusion initial set, step is extracted
Steel pile casting described in two；
（7）Drill forming pile：After institute's concrete perfusion final set in step 5, the drilled pile of construction molding is obtained.
Interior casing is made using steel plate in comparative example 1, and is adhesively fixed with steel pile casting, and comparative example 3 does not have interior
Casing, cannot achieve the recycling of steel pile casting, and steel pile casting is thus made to become disposable consumables, increase cost input
With the waste of steel, steel pile casting is left to meeting oxidation and rusting in water environment and is polluted to water quality throughout the year, influences environmental protection.
Claims (10)
1. casing structure is combined in one kind stake suitable for Soft Clay water, feature includes steel pile casting（1）, interior casing pipe culvert
（2）；The steel pile casting（1）For hollow-core construction, the interior casing pipe culvert（2）For armored concrete pipe culvert；The steel pile casting（1）For
Combine the outermost layer of casing structure, the interior casing pipe culvert（2）It is arranged in the steel pile casting（1）In hollow area and as combination
The internal layer of casing structure, the interior casing pipe culvert（2）It is arranged in steel pile casting（1）It inner layer but is not bonded with steel pile casting；
The interior casing pipe culvert（2）By it is multiple be in charge of contain it is segmented form, and pass through fixed connection apparatus connection up and down 2-section pipe
Contain, each pipe culvert is made closely to connect casing pipe culvert in formation（2）, the interior casing pipe culvert（2）End is equipped with symmetrical suspension hook arc
Shape notch（22）；The interior casing pipe culvert（2）Duct equipped with the whole section pipe culvert of multiple perforations（21）.
2. casing structure is combined in stake in applicable Soft Clay water according to claim 1, it is characterised in that：The fixation is even
Connection device is included in the small steel plate of every section pipe culvert each pre-buried setting up and down（23）, the small steel plate（23）One end pass through dowel
（25）With pipe culvert inner concrete anchor connection；It is described respectively in interior casing pipe culvert（2）In reserve duct in be provided through reinforcing bar
（3）And and steel pile casting（1）Firm welded connects into an entirety.
3. casing structure is combined in stake in applicable Soft Clay water according to claim 1, it is characterised in that：The fixation is even
Connection device includes the small steel plate contained with upper and lower 2-section pipe（23）The corresponding flange plate up and down being seamlessly connected and setting are in upper lower flange
Sheet rubber piece between piece, and multiple mounting holes are arranged at intervals on flange plate, the flange plate up and down is fastened by bolts
Together.
4. casing structure is combined in stake the water according to claim 1 suitable for Soft Clay, it is characterised in that：In described
Casing pipe culvert（2）It is axially arranged with four ducts along tube wall（21）, upper and lower holes road（21）Symmetrically, two ducts of left and right（21）It is right
Claim, and four duct diagonal line intersections are respectively formed one 120 ° and one 60 ° of angle.
5. casing structure is combined in stake the water according to claim 1 suitable for Soft Clay, it is characterised in that：The interior shield
Bobbin is contained（2）The symmetrical suspension hook arc-shaped slot of end（22）For chamfer trapezoidal shape.
6. casing structure is combined in stake the water according to claim 1 suitable for Soft Clay, it is characterised in that：The steel shield
Cylinder（1）Cylinder outer tip end is equipped with wing plate（4）, the wing plate（4）Upper surface and steel pile casting（1）Upper surface is concordant, the wing plate
（4）By sheet steel plate along cylinder outer tip end edge ring around into annulus.
7. casing structure is combined in stake the water according to claim 6 suitable for Soft Clay, it is characterised in that：The wing plate
（4）By welding with steel pile casting（1）Cylinder outer tip end edge connects.
8. casing structure is combined in stake the water according to claim 7 suitable for Soft Clay, it is characterised in that：The wing plate
（4）Upper surface is equipped with arc shaped handle（5）.
9. the construction method of stake combination casing structure, includes the following steps a kind of water suitable for Soft Clay：
（1）Preparation：Prefabricated reinforced concrete pipe culvert, 8~15cm of wall thickness often save pipe culvert length according to construction equipment or geology
Situation adjusts tube coupling length, multiple ducts is got through inside every section pipe culvert, and cut a pair in pipe culvert end both sides symmetric position
Suspension hook arc-shaped slot；
（2）It is laid at the top of steel pile casting to supporting course in the center of drilled pile using vibration hammer；
（3）It is drilled to supporting course 1-2m down, mobile drill using construction drill, places reinforcing bar, and by pipe prefabricated in advance
Contain segmented decentralization to foot of hole, installation is complete, and reinforcement welding is connect integral with steel pile casting；
（4）Drilling machine is in place, continues drilling to designed elevation；
（5）The concrete of design grade is perfused to the height for meeting design standard；
（6）After concrete strength reaches codes and standards, steel pile casting is extracted, construction is continued cycling through.
10. the construction method of stake combination casing structure, special a kind of water suitable for Soft Clay according to claim 9
Sign is that 50 ~ 100cm of design stake top absolute altitude is perfused；Concrete strength design specification standard is 85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810472978.6A CN108442371A (en) | 2018-05-17 | 2018-05-17 | One kind stake combination casing structure and its construction method suitable for Soft Clay water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810472978.6A CN108442371A (en) | 2018-05-17 | 2018-05-17 | One kind stake combination casing structure and its construction method suitable for Soft Clay water |
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| Publication Number | Publication Date |
|---|---|
| CN108442371A true CN108442371A (en) | 2018-08-24 |
Family
ID=63203847
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810472978.6A Pending CN108442371A (en) | 2018-05-17 | 2018-05-17 | One kind stake combination casing structure and its construction method suitable for Soft Clay water |
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Cited By (5)
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|---|---|---|---|---|
| CN109853569A (en) * | 2019-03-28 | 2019-06-07 | 中国建筑第四工程局有限公司 | A kind of method and device of Soft Clay pouring pile hole steel pile casting anti-settling deviation |
| CN109958128A (en) * | 2019-04-01 | 2019-07-02 | 浙江交工路桥建设有限公司 | A kind of pile foundation boring steel pile casting and its recovery method being inserted into land-based area Deep Soil Layers |
| CN110144913A (en) * | 2019-04-02 | 2019-08-20 | 武大巨成结构股份有限公司 | A kind of underwater prestress steel cofferdam device for tunnel water inlet of fetching water |
| CN112664140A (en) * | 2020-12-25 | 2021-04-16 | 辽宁科技大学 | Method for preventing blast holes in plateau severe cold regions from bursting water and preventing freezing |
| CN113073663A (en) * | 2021-04-07 | 2021-07-06 | 中交路桥建设有限公司 | Water stopping structure and method for underwater installation of steel pipe pile |
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| CN107574817A (en) * | 2017-09-19 | 2018-01-12 | 华东交通大学 | A kind of constructing device and construction method for superpressure retaining wall cast-in-situ bored pile |
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| CN110144913A (en) * | 2019-04-02 | 2019-08-20 | 武大巨成结构股份有限公司 | A kind of underwater prestress steel cofferdam device for tunnel water inlet of fetching water |
| CN112664140A (en) * | 2020-12-25 | 2021-04-16 | 辽宁科技大学 | Method for preventing blast holes in plateau severe cold regions from bursting water and preventing freezing |
| CN113073663A (en) * | 2021-04-07 | 2021-07-06 | 中交路桥建设有限公司 | Water stopping structure and method for underwater installation of steel pipe pile |
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