CN106351234A - Assembled type three-combined-round-steel-pipe concrete inner support structure and manufacturing method - Google Patents
Assembled type three-combined-round-steel-pipe concrete inner support structure and manufacturing method Download PDFInfo
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- CN106351234A CN106351234A CN201610924555.4A CN201610924555A CN106351234A CN 106351234 A CN106351234 A CN 106351234A CN 201610924555 A CN201610924555 A CN 201610924555A CN 106351234 A CN106351234 A CN 106351234A
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- steel pipe
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Abstract
The invention relates to an assembled type three-combined-round-steel-pipe concrete inner support structure and a manufacturing method, and belongs to the technical field of inner supports of a foundation pit of a metro station. The assembled type three-combined-round-steel-pipe concrete inner support structure comprises different types of round steel pipe concrete straight supports including short-connection straight supports and standard straight supports; the straight supports are connected with one another through high-intensity bolts; all members consist of round steel pipes filled with ultrahigh-intensity concrete; the cross sections of three round steel pipes are arrayed in an inverted triangle. By different forms of length combinations of the members, the requirement for inner support splicing of foundation pits with different lengths is met; the assembled type three-combined-round-steel-pipe concrete inner support structure which is high in rigidity, can be repeatedly used, can reduce the manufacturing cost and is used as an inner support in the foundation pit or a vertical shaft exterior protected construction system; the problems of complicated construction and high manufacturing cost of a concrete support can be effectively solved. The comprehensive benefit is outstanding, and the assembled type three-combined-round-steel-pipe concrete inner support structure has important engineering application value and development prospect.
Description
Technical field
The present invention relates to a kind of assembled combination concrete filled steel tube for deep basal pit or shaft enclosure structure inner support
Inner supporting structure and manufacture method, good particularly to an integrity, can strictly control building enclosure to deform, repeat utilization
Three combination concrete filled steel tube inner supporting structures of assembled and manufacture method, belong to Metro station excavation inner support support technology
Field.
Background technology
At present, Construction of Urban Rail Traffic becomes the requisite part of urban construction.Because rail line is
Realize the transfer between each bar circuit, station is built deeper and deeper, need strictly to control deformation in construction.Build the engineering method master of subway
Cut and cover method to be had, subsurface excavation method or shield method, open cut of subway station foundation ditch etc. is frequently with inner supporting type building enclosure.For effective control
Deformation, inner support system is frequently with bracing members and reinforced concrete support.Bracing members rigidity is little, when foundation ditch span is larger, steel
Support meeting unstability because amount of deflection is excessive；And bracing members internal corrosion situation is serious, recycling rate of waterused is low.Concrete support rigidity
Greatly, deformation is little, but construction will be through live assembling reinforcement, the operation such as formwork and form removal, makes and construction is complicated, the duration is longer；Make
For temporary structure, after the completion of construction, need explosion or manual demolition it is impossible to reuse, cost is high.One kind proposed by the present invention
Assembled for deep basal pit or shaft enclosure structure inner support combines concrete filled steel tube inner supporting structure, has and mixes with reinforcing bar
Solidifying soil supports identical rigidity, and can reuse, and reduces construction costs.
Content of the invention
The purpose of the present invention is to be to provide a kind of rigidity big, repeats and utilizes, reduces cost, encloses as foundation ditch or vertical shaft
Three combination concrete filled steel tube inner supporting structures of the assembled of inner support and manufacture method in protection structure system, can be effectively
The construction solving concrete support is complicated, cost is high, long in time limit the problems such as.
The technical solution adopted in the present invention is as follows:
A kind of three combination concrete filled steel tube inner supporting structures of assembled, go along with sb. to guard him for pattern foundation pit supporting structure or vertical shaft, including
Standard straight support and short circuit directly support；The support of described standard straight and the straight support of short circuit all include three round steel pipe be arrangeding in parallel, three
The cross section of round steel pipe is in that inverted triangle arranges, to increase vertical flexural resistance；The support of described standard straight and short circuit directly support
Two ends, that is, the two ends of three round steel pipe be respectively welded with ring flange and end-plate, described ring flange and end-plate are by described mark
Three round steel pipe closed at both ends that collimation supports and short circuit directly supports, are filled with concrete inside round steel pipe；Described ring flange and end
The surrounding of shrouding is provided with bolt hole；The length that described short circuit directly supports is less than the length of standard straight support；Described ring flange and end
It is provided with drawknot dowel, whole section of described drawknot dowel is cast in round steel pipe inner concrete between shrouding and round steel pipe inner concrete
In, its one end and ring flange or end seal plate weld, end internal force not only can be by the weldering between ring flange and end-plate and round steel pipe
Seam transmission, also can be transmitted by drawknot dowel, strengthen the connection between round steel pipe and endpoint node and stability, increase safety
Degree；The reserving hole of three inverted triangles arrangement is provided with described ring flange, its central axis pair with three round steel pipe respectively
Should, pour mouth as concrete；It is provided with tabula, reserved and three circles on described tabula on described standard straight support length direction
Outer diameter of steel pipes identical hole, combine round steel pipe component with assembled during welding to agree with, and plays the role of positioning；The work of tabula
Interknited with three round steel pipe of principal security integral, improve the globality of three steel pipes, during stress, work worked in coordination with by three steel pipes
Make.Described three are welded with polygon and put more energy into floor between round steel pipe and ring flange and end-plate；Many described standard straight supports and
Directly the ring flange supportting and end-plate are sequentially connected short circuit by bolt, thus constituting in three combination concrete filled steel tubes of assembled
Supporting construction.
Further, the support of described standard straight have 4 kinds dissimilar, it is respectively length 1m, 2m, the standard component of 3m, 6m；Institute
State the length that short circuit directly supports and be less than 1m.
Further, described concrete is the super high strength concrete of more than c50, described round steel pipe, tabula, ring flange and end
Shrouding is all using q345 steel.
Further, described round steel pipe diameter of section is 245mm-325mm, and round steel thickness of pipe wall is 7mm-9mm.
Further, when described standard straight support length is more than 6m, at every 3m, it is respectively provided with tabula, the thickness of tabula is not less than circle
Steel pipe and the thickness of ring flange；Described tabula is hexagon steel plate, to mitigate deadweight.
Further, described diameter of bolt hole is not more than the thickness of ring flange and end-plate.
Further, the thickness of described floor of putting more energy into is not less than the thickness of round steel pipe and ring flange.
Further, described floor of putting more energy into is in the form of groove weld, both sides be respectively welded at round steel pipe and ring flange and
On end-plate；Described ring flange is hexagon, while satisfaction is connected with round steel pipe, mitigates flange deadweight.
Further, described round steel pipe external diameter is 245mm, 273mm, 299mm or 325mm, and wall thickness is 7mm, 8mm or 9mm.
The manufacture methods of three combination concrete filled steel tube inner supporting structures of above-mentioned assembled it is characterised in that:
Described three combination complete batch production manufactures of each component of concrete filled steel tube inner supporting structure of assembled, can scene
Quick-assembling becomes concrete filled steel tube inner support system, and its manufacture method is as follows:
The first step, ring flange and end-plate make:
Ring flange is to connect the important component that different length directly supports, and is also to support overall relatively vulnerable area, its production technology
Must assure that accurate bolt hole at bolt connection；Wherein ring flange and end-plate lean on round steel pipe side to weld a number of drawing
Knot dowel, it is ensured that two sections of straight supports are completely embedded, its main production process is transmission end internal force: blanking, heating, blocking, end
Forging, punching the wad, trimming, quenched, shot-peening, welding dowel, dimension control；Reach the due quality of fit of flange through inspection and be conjunction
Lattice；
Second step, the selection of round steel pipe:
Three combination concrete filled steel tube inner supporting structures of assembled adopt the combining form of three small-diameter circular steel pipes, little
Diameter round steel pipe is hot rolled seamless steel tube, can be in market purchasing；
3rd step, ring flange and end-plate and round steel sealing of tube:
On factory's pedestal, ring flange and end-plate are welded to connect with round steel tube end, and use ribbed stiffener in end
Plate is strengthened；When standard straight support length is more than 6m, tabula is set at 3m；
4th step, concrete perfusion:
It is cast in small-diameter circular steel pipe using the super high strength concrete of more than c50, internal concrete is in three-dimensional and is subject to
Power state, its intensity can be improved.Using vertical method of vibrating, the one end being welded is carried the combination round steel pipe of end-plate,
End-plate one end stands up down；Strictly press charger sheet mixed concrete, and concrete poured into along ring flange reserving hole inwall,
Vibrator is started while pouring, closely knit to ensure concreting, it is filled into during concrete perfusion and put down with ring flange outer surface
Neat and floating.
Described three combination concrete filled steel tube inner supporting structures of assembled adopt batch production manufacture, can live quick-assembling
Become concrete filled steel tube inner support system；After construction terminates, concrete filled steel tube inner support system is disassembled into multistage concrete filled steel tube
Component, hangs out from foundation ditch, is available for reusing.
Beneficial effect
Compared with prior art, the invention has the beneficial effects as follows:
The complete batch production manufacture of assembled combined steel pipe concrete component, crudy is protected, and mechanical property is more
Reliable；Achieve the live quick-assembling of concrete filled steel tubular member, reduce job site labor intensity and
Construction procedure, saves the erection time of concrete filled steel tube inner support system, can effective reduction of erection time.
With bolt connection circular steel tube concrete component, between component, connect fastening, stability in the large is good.
Round steel pipe is wrapped in super high strength concrete, and concrete receives the constraint of steel pipe walls, makes concrete be in three-dimensional stress
State, improves the intensity of concrete；Meanwhile, the filling effect of concrete can prevent steel pipe from occurring local buckling to destroy.Steel pipe
Concrete combined structure has excellent mechanical property.
From super high strength concrete as packing material, dead load can be reduced, strengthen the bonding of concrete and steel pipe, carry
High steel pipe to concrete Confinement effect.
Super high strength concrete is full of round steel pipe, has intercepted air and water enters steel duct, steel pipe inner wall is not perishable
Or corrosion.
Assembled combines concrete filled steel tube inner bracing member simple structure, repeats and utilizes, economic and environment-friendly, with ordinary steel
Pipe inner support compares Saving steel amount, reduces cost.
Using single steel pipe less with common steel tube support phase diameter group, to pipe inner concrete restrictive preferably, group
After conjunction can effectively solving bracing members the little problem of rigidity, and improve bearing capacity.In steel pipe of the present invention, the concrete of perfusion is
Super high strength concrete, strength grade c50 and more than, can play minimizing concrete amount, mitigate the effect of deadweight.The present invention passes through
In standard straight support component one determining deviation arrangement diaphragm plate, thus improving the globality of component, increasing bending rigidity, strengthening laterally steady
Qualitative.Present configuration end flange is connected by casting concrete at the scene with concrete Guan Liang or coagulation fortifield village purlin, this section
Point can bear pressure compared with other forms inner support, also can bear pulling force.
Brief description
Fig. 1, concrete filled steel tube inner support profile；
Fig. 2, assembled combination concrete filled steel tube 1m standard straight support schematic diagram；
Fig. 3, assembled combination concrete filled steel tube 2m standard straight support schematic diagram；
Fig. 4, assembled combination concrete filled steel tube 3m standard straight support schematic diagram；
Fig. 5, assembled combination concrete filled steel tube 6m standard straight support schematic diagram；
Fig. 6, assembled combination concrete filled steel tube short circuit directly support schematic diagram；
Fig. 7, assembled combination concrete filled steel tube directly support schematic cross-section；
Fig. 8, concrete filled steel tube schematic cross-section；
Fig. 9, ring flange schematic diagram；
Figure 10, end-plate schematic diagram；
Figure 11, tabula schematic diagram；
Figure 12, floor schematic diagram of putting more energy into；
Figure 13, bolt schematic diagram；
In figure: 1: standard straight support, 2: short circuit directly supports, 3: round steel pipe, 4: concrete, 5: ring flange, 6: bolt hole, 7: put more energy into
Floor, 8: tabula, 9: drawknot dowel, 10: end-plate, 11: reserving hole, 12: outside foundation ditch, 13: building enclosure, 14: hole bottom.
Specific embodiment
The basic thought of the present invention is to combine concrete filled steel tube inner bracing member by assembled assembled, forms one and finishes
Whole property is good, and rigidity is big, repeats the inner support system utilizing.
Below by a Metro station excavation embodiment, and combine accompanying drawing, technical scheme is made further
Illustrate.Foundation ditch Central Standard excavation width is 21.1m, and end expanding section excavation width is 24.6m.Wherein root in this example
According to foundation ditch width requirement, standard straight support is divided into 1m, tri- kinds of specifications of 2m, 3m, 6m, and short circuit directly supports length and is less than 1m.
As shown in Fig. 1～12, three combination concrete filled steel tube inner supporting structures of assembled of the present invention.There are 4 kinds of differences
The standard straight support of type, directly supports including short circuit, standard straight supports；Described standard straight supports as shown in Fig. 2,3,4,5, is two ends usage
The inside of blue disk 5 and end-plate 10 closing is filled with three round steel pipe 3 of concrete, and surrounding leaves prepared screw-bolt hole 6.Standard straight
Support 1 and short circuit directly support 2 and all include three round steel pipe be arrangeding in parallel 3, and the cross section of three round steel pipe 3 is in that inverted triangle arranges.
Standard straight support 1 and short circuit directly support 2 two ends, that is, the two ends of three round steel pipe 3 be respectively welded with ring flange 5 and end-plate
10, described standard straight support 1 and short circuit are directly supportted 2 three round steel pipe 3 closed at both ends, round steel pipe 3 by ring flange 5 and end-plate 10
Inside is filled with concrete 4.The surrounding of ring flange 5 and end-plate 10 is provided with bolt hole 6.The length that short circuit directly supports 2 is less than
The length of standard straight support.It is provided with drawknot dowel 9 between ring flange 5 and end-plate 10 and round steel pipe 3 inner concrete 4.Drawknot anchor
Whole section of muscle 9 is cast in round steel pipe 3 inner concrete 4, and its one end is welded with ring flange 5 or end-plate 10, and end internal force not only may be used
By the weld seam transmission between ring flange and end-plate and round steel pipe, also can be transmitted by drawknot dowel, strengthen round steel pipe and end
Connection between node and stability, increase degree of safety.The reserving hole 11 of three inverted triangle arrangements is provided with ring flange 5,
It is corresponding with the central axis of three round steel pipe 3 respectively, pours mouth as concrete；Standard straight supports and arranges on 1 length direction
There is tabula 8, reserved and three round steel pipe 3 external diameter identical holes on tabula 8.Three round steel pipe 3 and ring flange 5 and end-plate 10
Between be welded with polygon and put more energy into floor 7, many standard straight supports 1 and short circuit directly support 2 ring flange 5 and end-plate 10 by bolt
It is sequentially connected, thus constituting three combination concrete filled steel tube inner supporting structures of assembled.Wherein, concrete 4 is more than c50's
Super high strength concrete, when standard straight supports 1 length more than 6m, is respectively provided with tabula 8, the thickness of tabula 8 is not less than round steel pipe 3 at every 3m
With the thickness of ring flange 5, tabula 8 is hexagon steel plate, and bolt hole 6 diameter is not more than the thickness of ring flange 5 and end-plate 10, plus
The thickness of strength floor 7 is not less than the thickness of round steel pipe 3 and ring flange 5, puts more energy into floor 7 in the form of groove weld, and both sides are respectively
It is welded on round steel pipe 3 and ring flange 5 and end-plate 10, ring flange 5 is hexagon.
Described three combination complete batch production manufactures of each component of concrete filled steel tube inner supporting structure of assembled, can scene
Quick-assembling becomes concrete filled steel tube inner support system, and its manufacture method is as follows:
The first step, ring flange 5 and end-plate 10 make:
Ring flange 5 is to connect the important component that different length directly supports, and is also to support overall relatively vulnerable area, its production technology
Must assure that accurate bolt hole 6 at bolt connection；Wherein ring flange 5 and end-plate 10 lean on round steel pipe 3 side to weld a fixed number
The drawknot dowel 9 of amount, it is ensured that two sections of straight supports are completely embedded, its main production process is transmission end internal force: blanking, heating, in advance
Forging, finish-forging, punching the wad, trimming, quenched, shot-peening, welding dowel, dimension control；Reach the due quality of fit of flange through inspection
As qualified；
Second step, the selection of round steel pipe 3:
Three combination concrete filled steel tube inner supporting structures of assembled adopt the combining form of three small-diameter circular steel pipes 3,
Small-diameter circular steel pipe 3 is hot rolled seamless steel tube, can be in market purchasing；
3rd step, ring flange 5 and end-plate 10 and round steel pipe 3 are welded:
On factory's pedestal, ring flange 5 and end-plate 10 are welded to connect with round steel pipe 3 end, and use adds in end
Strength floor 7 is strengthened；When standard straight supports 1 length and is more than 6m, tabula 8 is set at 3m；
4th step, concrete perfusion 4:
It is cast in small-diameter circular steel pipe 3 using the super high strength concrete 4 of more than c50, internal concrete is in three-dimensional
Stress, its intensity can be improved.Using vertical method of vibrating, the one end being welded is carried the combination round steel of end-plate 10
Pipe, end-plate 10 one end stands up down；Strictly press charger sheet mixed concrete, and by concrete along ring flange 5 reserving hole 11
Inwall pours into, and starts vibrator while pouring, closely knit to ensure concreting, is filled into and ring flange during concrete perfusion
5 flush with outer surface are simultaneously floating.
In factory, according to design drawing to component species, size, number requirement, respectively processing and fabricating standard straight support 1,
Short circuit directly supports 2.Taking this example as a example, in all concrete filled steel tubular members, round steel pipe 3 external diameter 245mm, wall thickness 7mm are (big for span
Location can adopt 273mm steel pipe).Standard straight support 1 includes 1m, the standard component of 2m, 3m, 6m specification.Short circuit directly supports 2 according to work
Journey assembly length needs, and customized production, less than 1m, plays polishing filling effect.The material that structure manufacture adopts is c50 and above super
High-strength concrete, q345 steel.Above four kinds of components fill round steel pipe 3 by super high strength concrete, constitute steel tube concrete local soil type
Close structure, steel tube-concrete composite structure end is sealed by the ring flange 5 of unified specification and end-plate 10.All component ring flanges
5 all in same position prepared screw-bolt hole 6.The a diameter of 32mm of bolt hole 6, bolt hole 6 spacing is 120mm, and bolt hole 6 is away from flange
Disk 5 Distances Between Neighboring Edge Points are 50mm.Put more energy into floor 7 in the form of groove weld, both sides be respectively welded at round steel pipe 3 and ring flange 5 and
On end-plate 10, floor of putting more energy into can not stop bolt hole 6, and high-strength bolt can not be hindered to screw.
The concrete filled steel tubular member manufacturing in factory is transported to outside the venue.Outside the venue, according to design drawing to component assembly
Requirement, many adjacent modular are directly supportted 1 and short circuits directly supports 2 ring flange 5 and end-plate 10 is sequentially connected by bolt, make
The concrete filled steel tube that becomes spell long joining section, form complete structure.
It is more than exemplary embodiments of the present invention, the enforcement not limited to this of the present invention.
Above-described embodiment is intended merely to become apparent to illustrate that what technical scheme made enumerates, not to the present invention's
Limit, protection scope of the present invention is still defined by scope defined in the appended claims.
Claims (10)
1. a kind of three combination concrete filled steel tube inner supporting structures of assembled, go along with sb. to guard him for pattern foundation pit supporting structure or vertical shaft, its feature
With: include standard straight support (1) and short circuit directly support (2)；Described standard straight support (1) and short circuit directly support (2) and all include three
The round steel pipe (3) be arrangeding in parallel, the cross section of three round steel pipe (3) is in that inverted triangle arranges；Described standard straight support (1) and short circuit
Directly support the two ends of (2), that is, the two ends of three round steel pipe (3) are respectively welded with ring flange (5) and end-plate (10), described flange
Described standard straight support (1) and short circuit are directly supportted three round steel pipe (3) closed at both ends of (2), round steel by disk (5) and end-plate (10)
It is filled with concrete (4) inside pipe (3)；The surrounding of described ring flange (5) and end-plate (10) is provided with bolt hole (6)；Institute
State the length less than standard straight support for the length that short circuit directly supports (2)；Described ring flange (5) and end-plate (10) are interior with round steel pipe (3)
It is provided with drawknot dowel (9), whole section of described drawknot dowel (9) is cast in round steel pipe (3) inner concrete (4) between concrete (4)
In, its one end is welded with ring flange (5) or end-plate (10)；The pre- of three inverted triangle arrangements is provided with described ring flange (5)
Box out hole (11), it is corresponding with the central axis of three round steel pipe (3) respectively, pour mouth as concrete；Described standard straight
It is provided with tabula (8), described tabula (8) is upper to be reserved and three round steel pipe (3) external diameter identical holes on support (1) length direction；
It is welded with polygon between described three round steel pipe (3) and ring flange (5) and end-plate (10) to put more energy into floor (7)；Many described marks
Collimation supports (1) and short circuit directly supports the ring flange (5) of (2) and end-plate (10) is sequentially connected by bolt, thus constituting assembling
Three combination concrete filled steel tube inner supporting structures of formula.
2. three combination concrete filled steel tube inner supporting structures of assembled according to claim 1 it is characterised in that: described
Standard straight support (1) have 4 kinds dissimilar, its be respectively length 1m, 2m, the standard component of 3m, 6m；Described short circuit directly supports the length of (2)
Degree is less than 1m.
3. three combination concrete filled steel tube inner supporting structures of assembled according to claim 1 it is characterised in that: described
Concrete (4) is the super high strength concrete of more than c50, described round steel pipe (3), tabula (8), ring flange (5) and end-plate (10)
All using q345 steel.
4. three combination concrete filled steel tube inner supporting structures of assembled according to claim 1 it is characterised in that: described
Round steel pipe (3) diameter of section is 245mm-325mm, and round steel pipe (3) wall thickness is 7mm-9mm.
5. three combination concrete filled steel tube inner supporting structures of assembled according to claim 1 it is characterised in that: described
When standard straight support (1) length is more than 6m, at every 3m, it is respectively provided with tabula (8), the thickness of tabula (8) is not less than round steel pipe (3) and method
The thickness of blue disk (5)；Described tabula (8) is hexagon steel plate.
6. three combination concrete filled steel tube inner supporting structures of assembled according to claim 1 it is characterised in that: described
Bolt hole (6) diameter is not more than the thickness of ring flange (5) and end-plate (10).
7. three combination concrete filled steel tube inner supporting structures of assembled according to claim 1 it is characterised in that: described
The thickness of floor (7) of putting more energy into is not less than the thickness of round steel pipe (3) and ring flange (5).
8. three combination concrete filled steel tube inner supporting structures of assembled according to claim 1 it is characterised in that: described
Put more energy into floor (7) in the form of groove weld, both sides are respectively welded on round steel pipe (3) and ring flange (5) and end-plate (10)；
Described ring flange (5) is hexagon.
9. three combination concrete filled steel tube inner supporting structures of assembled according to claim 1 it is characterised in that: described
Round steel pipe (3) external diameter is 245mm, 273mm, 299mm or 325mm, and wall thickness is 7mm, 8mm or 9mm.
10. three making sides combining concrete filled steel tube inner supporting structures of assembled according to claim 1-9 Arbitrary Term
Method it is characterised in that:
Described three combination complete batch production manufactures of each component of concrete filled steel tube inner supporting structure of assembled, can be live quick
It is assembled into concrete filled steel tube inner support system, its manufacture method is as follows:
The first step, ring flange (5) and end-plate (10) make:
Ring flange (5) is to connect the important component that different length directly supports, and is also to support overall relatively vulnerable area, its production technology must
Accurate bolt hole (6) at bolt connection must be ensured；Wherein ring flange (5) and end-plate (10) lean on round steel pipe (3) side to weld
A number of drawknot dowel (9), it is ensured that two sections of straight supports are completely embedded, its main production process is transmission end internal force: under
Material, heating, blocking, finish-forging, punching the wad, trimming, quenched, shot-peening, welding dowel, dimension control；Reaching flange through inspection should have
Quality of fit as qualified；
Second step, the selection of round steel pipe (3):
Three combination concrete filled steel tube inner supporting structures of assembled adopt the combining form of three small-diameter circular steel pipes (3), little
Diameter round steel pipe (3) is hot rolled seamless steel tube, can be in market purchasing；
3rd step, ring flange (5) and end-plate (10) are welded with round steel pipe (3):
On factory's pedestal, ring flange (5) and end-plate (10) are welded to connect with round steel pipe (3) end, and use in end
Floor (7) of putting more energy into is strengthened；When standard straight support (1) length is more than 6m, setting tabula (8) at 3m；
4th step, concrete perfusion (4):
It is cast in small-diameter circular steel pipe (3) using the super high strength concrete (4) of more than c50, internal concrete is in three-dimensional
Stress, its intensity can be improved.Using vertical method of vibrating, the one end being welded is carried the combination circle of end-plate (10)
Steel pipe, end-plate (10) one end stands up down；Strictly press charger sheet mixed concrete, and concrete is reserved along ring flange (5)
Hole (11) inwall pours into, and starts vibrator while pouring, closely knit to ensure concreting, is filled into during concrete perfusion
With ring flange (5) flush with outer surface and floating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610924555.4A CN106351234A (en) | 2016-10-24 | 2016-10-24 | Assembled type three-combined-round-steel-pipe concrete inner support structure and manufacturing method |
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| CN201610924555.4A CN106351234A (en) | 2016-10-24 | 2016-10-24 | Assembled type three-combined-round-steel-pipe concrete inner support structure and manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747313A (en) * | 2017-11-30 | 2018-03-02 | 中铁十六局集团有限公司 | Inner supporting device for pattern foundation pit supporting structure |
| CN115324076A (en) * | 2022-09-13 | 2022-11-11 | 北京工业大学 | Support end structure in assembled combination steel pipe concrete interior |
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| CN102635118A (en) * | 2012-03-26 | 2012-08-15 | 北京工业大学 | Square steel pipe concrete supporting structure for foundation pit support |
| CN203530989U (en) * | 2013-09-28 | 2014-04-09 | 福建工程学院 | Deep foundation pit shoring retaining wall steel pipe concrete supporting assembly |
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| CN107747313A (en) * | 2017-11-30 | 2018-03-02 | 中铁十六局集团有限公司 | Inner supporting device for pattern foundation pit supporting structure |
| CN115324076A (en) * | 2022-09-13 | 2022-11-11 | 北京工业大学 | Support end structure in assembled combination steel pipe concrete interior |
| CN115324076B (en) * | 2022-09-13 | 2023-08-08 | 北京工业大学 | Assembly type combined steel pipe concrete inner support fixing and supporting end structure |
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