CN107190736A - Suitable for the flexible shroud and its construction method of steel reinforcement cage under coral reef geology - Google Patents

Suitable for the flexible shroud and its construction method of steel reinforcement cage under coral reef geology Download PDF

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Publication number
CN107190736A
CN107190736A CN201710254034.7A CN201710254034A CN107190736A CN 107190736 A CN107190736 A CN 107190736A CN 201710254034 A CN201710254034 A CN 201710254034A CN 107190736 A CN107190736 A CN 107190736A
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CN
China
Prior art keywords
hole
outside
steel
flexible shroud
around
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.)
Pending
Application number
CN201710254034.7A
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Chinese (zh)
Inventor
程多云
林树奎
游新鹏
郗永磊
赵冬晓
万猛
冯小龙
夏元宏
曹志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongjiao Wuhan Zhixing International Engineering Consulting Co Ltd
CCCC Second Harbor Engineering Co
China Communications 2nd Navigational Bureau 2nd Engineering Co Ltd
Original Assignee
Zhongjiao Wuhan Zhixing International Engineering Consulting Co Ltd
CCCC Second Harbor Engineering Co
China Communications 2nd Navigational Bureau 2nd Engineering Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Zhongjiao Wuhan Zhixing International Engineering Consulting Co Ltd, CCCC Second Harbor Engineering Co, China Communications 2nd Navigational Bureau 2nd Engineering Co Ltd filed Critical Zhongjiao Wuhan Zhixing International Engineering Consulting Co Ltd
Priority to CN201710254034.7A priority Critical patent/CN107190736A/en
Publication of CN107190736A publication Critical patent/CN107190736A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/36Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/60Piles with protecting cases

Abstract

The invention discloses the flexible shroud for being applied to steel reinforcement cage under a kind of coral reef geology, it is applied under coral reef geology, the hole run into the work progress of cast-in-situ bored pile, including:Fixed mount, it is hollow tubular steel reinforcement cage, is set around the outside of pile foundation steel bar cage, and the upper end of the fixed mount is located at the top that hole hole is pushed up, and its lower end is located at the lower section at hole hole bottom;Isolate supporting layer, be close to the outside of fixed mount around two ends that are fixed and being open sealing, the inside of fixed mount is isolated with described hole.Present invention also offers a kind of construction method for the flexible shroud for being applied to steel reinforcement cage under use coral reef geology., can be under coral reef geological conditions the invention provides the flexible shroud and its construction method under a kind of coral reef geology suitable for steel reinforcement cage, the hole run into work progress that is high-quality and rapidly processing cast-in-situ bored pile.

Description

Suitable for the flexible shroud and its construction method of steel reinforcement cage under coral reef geology
Technical field
The invention belongs to the construction field of cast-in-situ bored pile, more specifically to being applied under a kind of coral reef geology The flexible shroud and its construction method of steel reinforcement cage.
Background technology
Drilled and irrigated in the work progress of cast-in-situ bored pile under coral reef geological conditions, due to coral reef geology Complicated condition, karst spreads all over, and being frequently present of needs the situation for passing through irregular holes.When hole is more and there is Groundwater Flow When, it will cause very big difficulty for the pouring construction of cast-in-situ bored pile.
At present, the processing method of the hole run into the work progress of cast-in-situ bored pile mainly includes:Casing follow-up step, throwing Washer stone method, backfill lean concrete method, pressure grout method etc..Casing follow-up step makes pile foundation isolate with hole by embedded casing, Ensure smoothly pouring for pile foundation concrete, if but perfusion cast-in-situ bored pile quantity is more or during long stake, construction cost compared with Greatly.The method that throwing slabstone method uses the fillers such as throwing slabstone and loess, using drill bit impact loess and slabstone, by loess and piece Stone is squeezed into hole and hole wall gap, strengthens the self-stable ability of hole wall, when this method is used alone to larger hole effect not Substantially, generally require to coordinate other processing methods synchronously to carry out.Lean concrete method is backfilled by pouring into low-grade concrete device to hole Hole is backfilled, drilling and forming hole again after certain interval of time, but hole it is excessive when, construction costly using this method Excessive cycle.Pressure grout method carries out grouting and reinforcing to hole, and the engineering time is short, but this method is costly.
Based on the present situation of above-mentioned hole processing method, nowadays lack a kind of simple in construction, convenient construction, cost it is controllable, The hole processing method of hole high treating effect, can it is high-quality, rapidly process under coral reef geology in cast-in-situ bored pile The hole run into during pouring construction.
The content of the invention
It is an object of the invention to solve at least the above, and provide the advantage that at least will be described later.
It is a kind of it is a still further object of the present invention to provide the flexible shroud for being applied to steel reinforcement cage under a kind of coral reef geology Simple in construction, the controllable flexible shroud of cost can be quickly handled under coral reef geology in cast-in-situ bored pile with convenient construction personnel Work progress in the hole that runs into.
In order to realize that there is provided be applied to steel under a kind of coral reef geology according to object of the present invention and further advantage The flexible shroud of muscle cage, it is applied under coral reef geology, the hole run into the work progress of cast-in-situ bored pile, including:Gu Determine frame, it is hollow tubular steel reinforcement cage, is set around the outside of pile foundation steel bar cage, and the upper end position of the fixed mount The top pushed up in hole hole, its lower end is located at the lower section at hole hole bottom;Isolate supporting layer, the outside for being close to fixed mount is surrounded Two ends sealing that is fixed and being open, the inside of fixed mount is isolated with described hole.
Preferably, the fixed mount is followed successively by from inside to outside:Transverse steel, its one end is hung down with the pile foundation steel bar cage cage bar Straight welding, and the transverse steel, in the plane where the axis of the fixed mount, the transverse steel is in perpendicular Multiple with being uniformly distributed in horizontal plane, the highest level face for being provided with transverse steel is located at the top that hole hole is pushed up, and sets The floor level face for being equipped with transverse steel is located at the lower section at hole hole bottom;Vertical reinforcement, the quantity of the vertical reinforcement be it is multiple, And the vertical outside for being vertically installed in transverse steel, and welded with the other end of the transverse steel, the upper end of vertical reinforcement Positioned at hole hole push up top, and the vertical reinforcement lower end be located at hole hole bottom lower section;Outside stirrup, the outside The quantity of stirrup is multiple, and transverse horizontal is on the outside of vertical reinforcement and fixed around being arranged at, the outside stirrup institute of its topmost It is located at horizontal plane where the top that hole hole is pushed up, and the outside stirrup of its foot in horizontal plane to be located under the bottom of hole hole Side.
Preferably, it is described isolation supporting layer and fixed mount be fixedly installed for:The top and bottom of isolating supporting layer are used Iron wire is enclosed and is tightened on fixed mount around at least one, and the top loop of the isolation supporting layer is located at around the position of iron wire The top on hole hole top, the lower loop of the isolation supporting layer is located at the lower section at hole hole bottom around the position of iron wire.
Preferably, the isolation supporting layer is followed successively by from inside to outside:Medial support material, it is close to the outside water of fixed mount It is flat to be enclosed around setting at least one, and the top of the medial support material and bottom iron wire are enclosed around at least one and tightened solid It is scheduled on fixed mount;Middle part water proof material, its be close to medial support material outside be horizontally disposed with least circle, and will be described in The top of portion's water proof material and bottom iron wire are enclosed and are tightened on fixed mount around at least one;Outside-supporting material, its The outside for being close to middle part water proof material is horizontally disposed with an at least circle, and by the top of the outside-supporting material and bottom iron wire Enclose and be tightened on fixed mount around at least one.
Preferably, the medial support material and outside-supporting material are geotextiles, and the middle part water proof material is plastics Film.
Present invention also offers a kind of construction method for the flexible shroud for being applied to steel reinforcement cage under use coral reef geology, bag Include following steps:1) before the construction of cast-in-situ bored pile, geological prospecting is carried out, to primarily determine that hole location;2) steel pile casting is buried, Carry out drilling and forming hole operation;3) flexible shroud is made on steel reinforcement cage, the upper end of flexible shroud is located at the top that hole hole is pushed up, Its lower end is located at the lower section at hole hole bottom;4) decentralization of the steel reinforcement cage with the flexible shroud and spreading, until under steel reinforcement cage Discharge into;5) concrete perfusion, completes the perfusion of cast-in-situ bored pile.
Preferably, it is described that concretely comprising the following steps for flexible shroud is made on steel reinforcement cage:S1:The position of flexible shroud is determined, And the outside level of the pile foundation steel bar cage cage bar in corresponding position welds one end of transverse steel, and ensure the transverse steel The other end in the plane where the axis of the fixed mount;S2:The transverse steel is welded in the inner side of vertical reinforcement The other end, and it is vertical around the outside for being arranged at transverse steel;S3:Fixed outside stirrup, it is horizontal on the outside of vertical reinforcement To circular outside stirrup, and fixation is tightened with iron wire.S4:It is close to the circle of outside one of fixed mount around setting medial support material, The top of medial support material and lower loop are enclosed around at least one with iron wire and iron wire is tightened;S5:It is close to medial support material The circle of outside one around setting middle part water proof material, with iron wire by the top of middle part water proof material and lower loop around at least one circle simultaneously Iron wire is tightened;S6:It is close to the circle of outside one of middle part water proof material around outside-supporting material is set, with iron wire by outside-supporting The top of material and lower loop enclose around at least one and tighten iron wire, produce the flexible shroud.
Preferably, the top of the flexible shroud is pushed up higher than hole hole and apart from its 0.5m-1.5m, the flexible shroud Bottom less than hole hole bottom and apart from its 0.5m-1.5m.
The present invention at least includes following beneficial effect:
First, compared with the prior art, the present invention it is simple and easy in construction method, the production process of the flexible shroud and Auxiliary equipment is less, both reduces construction cost, and the construction speed of project progress is accelerated again.
2nd, compared with the prior art, the present invention is during flexible shroud is made, and practical material is reinforcing bar and construction In commonly use plastic sheeting and geotextiles.Plastic sheeting block-water effect is good, lighter weight, with low cost, is good water proof material Material, geotextile material intensity is high, and geotextiles are used on the two sides of plastic sheeting, effectively concrete can be carried out assisted plastic film Support, the cost in the work progress of cast-in-situ bored pile can be reduced using the present invention, cast-in-situ bored pile is can be widely applied to Foundation construction field.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is structural representation of the invention;
Fig. 2 is top view of the invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text Word can be implemented according to this.
It should be noted that experimental method described in following embodiments, is conventional method unless otherwise specified, institute Reagent and material are stated, unless otherwise specified, is commercially obtained;In the description of the invention, term " transverse direction ", " vertical To ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", the instruction such as " outer " side Position or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplify description, It is not instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, because This is not considered as limiting the invention.
As shown in Figure 1-2, the invention provides the flexible shroud for being applied to steel reinforcement cage under a kind of coral reef geology, it is applied Under coral reef geology, the hole run into the work progress of cast-in-situ bored pile, including:Fixed mount, it is hollow cylinder The steel reinforcement cage of shape, is set around the outside of pile foundation steel bar cage 7, and the upper end of the fixed mount is located at the top that the hole of hole 8 is pushed up, its Lower end is located at the lower section at the hole bottom of hole 8;Isolate supporting layer, the outside for being close to fixed mount surrounds what is fixed and be open Two ends are sealed, and the inside of fixed mount is isolated with described hole 8.The fixed mount is used to fix the isolation supporting layer, institute State isolation supporting layer to be fixed on fixed mount with iron wire, material used herein is iron wire, but is not restricted to iron wire.Institute Stating isolation supporting layer effectively can isolate hole 8, prevent the loss of the concrete in pile foundation casting process, it is ensured that pile foundation is mixed The smooth of solidifying soil is poured.In concreting process, the isolation supporting layer can form bulge-structure in the position of hole 8, convex The thickness of the concrete on the outside of fixed mount can be increased by playing structure, reinforced pile foundation, prevented subsurface flow impacts for a long time from causing reinforcing bar Corrosion phenomena.The fixed mount and isolation supporting layer are collectively forming a web frame, in concreting process and pre-hardening The preceding impact for protecting concrete from subsurface flow, it is ensured that the smooth of pile foundation is poured.The hole 8 mentioned in the present invention is in coral Under coral reef geology, the hole run into the work progress of cast-in-situ bored pile.The present invention is applied under coral reef geology, drill-pouring During the hole run into the work progress of stake, its benefit is highlighted the most, but is not limited only to this, in any condition, using this Invention is within the scope of the present invention.
The fixed mount is followed successively by from inside to outside:Transverse steel 1, its one end is vertical with the cage bar of the pile foundation steel bar cage 7 Welding, and the transverse steel 1 is in the plane where the axis of the fixed mount, the transverse steel 1 is in perpendicular Multiple with being uniformly distributed in horizontal plane, the highest level face for being provided with transverse steel 1 is located at the top that the hole of hole 8 is pushed up, and The floor level face for being provided with transverse steel 1 is located at the lower section at the hole bottom of hole 8;Vertical reinforcement 1, the quantity of the vertical reinforcement 2 To be multiple, and the vertical outside for being vertically installed in transverse steel 1, and welded with the other end of the transverse steel 1, vertical steel The upper end of muscle 2 be located at the hole of hole 8 push up top, and the vertical reinforcement 2 lower end be located at the hole bottom of hole 8 lower section;Outside Stirrup 3, the quantity of the outside stirrup 3 is multiple, and transverse horizontal, around being arranged at the outside of vertical reinforcement 2 and fixing, it is most The place horizontal plane of outside stirrup 3 on top is located at the top that the hole of hole 8 is pushed up, and the place level of outside stirrup 3 of its foot Face is located at the lower section at the hole bottom of hole 8.Transverse steel 1 is welded on to the outside of the steel reinforcement cage cage bar 7 of pile foundation, fixed mount can be allowed The support frame and impetus having had.Transverse steel 1 is arranged in the plane where the axis of the fixed mount and is conducive to fixing The structural stability of frame.Transverse steel 1 is uniformly distributed multiple in perpendicular and in horizontal plane, it is ensured that transverse steel 1 uniform force.Vertical reinforcement 2 is set again in the outside of transverse steel 1, fixed mount can be reinforced.Set in the outside of vertical reinforcement 2 Put the stress-bearing capability that outside stirrup 3 further enhances fixed mount.Originally can be using welding or the fixation side wound with iron wire Formula, but described fixed form is not restricted to, other can reach the fixed form of fixed purpose the present invention's In protection domain.
It is described isolation supporting layer and fixed mount be fixedly installed for:The top and bottom that isolate supporting layer are surround with iron wire At least one encloses and is tightened on fixed mount, and the top loop of the isolation supporting layer is located at the hole of hole 8 around the position of iron wire The top on top, the lower loop of the isolation supporting layer is located at the lower section at the hole bottom of hole 8 around the position of iron wire.The isolation supporting layer It is fixed on iron wire on fixed mount, material used herein is iron wire, but is not restricted to iron wire.Set top iron wire and The position of bottom iron wire, is to ensure that flexible shroud can must effectively obstruct the water of the flowing in hole 8, it is ensured that concrete does not flow Lose, it is ensured that the smooth of pile foundation is poured.Iron wire can wind multi-turn as needed.
The isolation supporting layer is followed successively by from inside to outside:Medial support material 4, its outside level for being close to fixed mount is surrounded Set at least one to enclose, and the top of the medial support material 4 and bottom iron wire are enclosed and are tightened to around at least one On fixed mount;Middle part water proof material 5, its outside for being close to medial support material 4 is horizontally disposed with least circle, and by the middle part The top of water proof material 5 and bottom iron wire are enclosed and are tightened on fixed mount around at least one;Outside-supporting material 6, its The outside for being close to middle part water proof material 5 is horizontally disposed with an at least circle, and by the top of the outside-supporting material 6 and bottom iron Silk is enclosed and is tightened on fixed mount around at least one.The middle part water proof material 5 can obstruct the circulating water in hole 8, The intensity of the medial support material 4 and outside-supporting material 6 is big, can be to being supported to concrete, and reduces middle part The stress of water proof material 5.The present invention takes the mode of horizontal wrap, is a kind of canoe for most saving material, but not only It is limited to such a canoe, it is all that the canoe for isolating the inside of fixed mount with described hole 8 can be reached in this hair In bright protection domain.The number of turns that iron wire is wound can be determined according to actual conditions, but in order to reach the purpose of the present invention at least Winding one is enclosed.
The medial support material 4 and outside-supporting material 6 are geotextiles, and the middle part water proof material 5 is plastic sheeting. The block-water effect of the plastic sheeting is good, lighter weight, with low cost, is good water proof material.Geotextile material intensity is high, It is relatively common in work progress, it is the backing material that can conveniently obtain, effectively concrete can be propped up assisted plastic film Support, and reduce the power that plastic sheeting is subject to.
It is applied to the construction method of the flexible shroud of steel reinforcement cage under a kind of use coral reef geology, comprises the following steps:1) Before the construction of cast-in-situ bored pile, geological prospecting is carried out, to primarily determine that the position of hole 8;2) steel pile casting is buried, drilling and forming hole is carried out Operation;3) flexible shroud is made on steel reinforcement cage, the upper end of flexible shroud is located at the top that the hole of hole 8 is pushed up, its lower end is located at The lower section at the hole bottom of hole 8;4) decentralization of the steel reinforcement cage with the flexible shroud and spreading, are completed until steel reinforcement cage is transferred;5) Concrete perfusion, completes the perfusion of pile foundation.What the steel pile casting used in work progress need not take out after the completion of pile foundation perfusion, Thus the present invention is compared to for casing follow-up step, has been changed the steel pile casting for completely cutting off hole 8 into flexible shroud, has been reduced into This, meanwhile, during the construction of flexible shroud below the steel reinforcement cage before be processed, so being applicable using under the coral reef geology It is simpler in the construction method of the flexible shroud of steel reinforcement cage, it is convenient.
It is described that concretely comprising the following steps for flexible shroud is made on steel reinforcement cage:S1:The position of flexible shroud is determined, and corresponding The outside level of cage bar of pile foundation steel bar cage 7 of position weld one end of transverse steel 1, and ensure the transverse steel 1 The other end is in the plane where the axis of the fixed mount;S2:The transverse steel 1 is welded in the inner side of vertical reinforcement 2 The other end, and it is vertical around the outside for being arranged at transverse steel 1;S3:Fixed outside stirrup 3, in the outside of vertical reinforcement 2 Stirrup 3 on the outside of lateral circular, and tighten fixation with iron wire.S4:It is close to the circle of outside one of fixed mount around setting medial support material Material 4, the top of medial support material 4 and lower loop are enclosed and tighten iron wire with iron wire around at least one;S5:It is close to medial support The circle of outside one of material 4 around setting middle part water proof material 5, with iron wire by the top of middle part water proof material 5 and lower loop around to Few one encloses and tightens iron wire;S6:It is close to the circle of outside one of middle part water proof material 5 around outside-supporting material 6 is set, uses iron wire The top of outside-supporting material 6 and lower loop are enclosed around at least one and iron wire is tightened, the flexible shroud is produced.Drilling Cheng Hou, according to the specific steps, you can obtain the steel reinforcement cage with flexible shroud.
The top of the flexible shroud is 0.5m-1.5m higher than the distance that the hole of hole 8 is pushed up, and the bottom of the flexible shroud is low Distance in the hole bottom of hole 8 is 0.5m-1.5m.If the top of the flexible shroud is too short higher than the distance that the hole of hole 8 is pushed up, and shape Into bulge-structure in concrete gravity it is excessive, the isolation supporting layer of flexible shroud can be caused to be come off from fixed mount.If described The bottom of flexible shroud is too short less than the distance that the hole of hole 8 is pushed up, formed by concrete gravity in bulge-structure it is excessive, also can The isolation supporting layer of flexible shroud is caused to be come off from fixed mount.If the top of the flexible shroud is higher than the distance that the hole of hole 8 is pushed up It is long, the waste of material can be caused.If the bottom of the flexible shroud is long less than the distance that the hole of hole 8 is pushed up, material is also resulted in The waste of material.The distance and the bottom of the flexible shroud that the top of present invention setting flexible shroud is pushed up higher than the hole of hole 8 are less than The distance at the hole bottom of hole 8 is 0.5-1.5m, but is not limited only to this, and all tops that can reach the object of the invention flexible shroud are high The distance pushed up in the hole of hole 8 and the bottom of the flexible shroud are less than the distance at the hole bottom of hole 8 in protection scope of the present invention It is interior.
Under coral reef geological conditions, the construction process that the present invention is irrigated for cast-in-situ bored pile:Geological prospecting → set up and apply Work platform → installation leading truck is simultaneously positioned → buries steel pile casting → drilling and forming hole → borehole cleaning and checks hole quality → with flexible Pile foundation steel bar cage processing → decentralization of sheath carries pile foundation steel bar cage → pouring underwater concrete → pile foundation quality of flexible shroud Check.
Under coral reef geological conditions, casing follow-up step is used for the construction process that cast-in-situ bored pile is irrigated:Geological prospecting → take If operation platform, → installation leading truck is simultaneously positioned → is buried steel pile casting → drilling and forming hole to close hole top mark height → steel that punctures and protected Cylinder spreading, transfer to passing through hole location → continuation drilling and forming hole to designed elevation → borehole cleaning and check hole quality → routine steel Muscle cage is processed and decentralization → pouring underwater concrete → pile foundation quality inspection.
The steel pile casting used in work progress is without what is taken out after the completion of pile foundation perfusion, and thus the present invention compares For casing follow-up step, change the steel pile casting for completely cutting off hole 8 into flexible shroud, reduced cost, meanwhile, flexible shroud During construction below the pile foundation steel bar cage before be processed, so using the flexibility for being applied to steel reinforcement cage under the coral reef geology The construction method of sheath is simpler, convenient.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited In specific details and shown here as the legend with description.

Claims (8)

1. being applied to the flexible shroud of steel reinforcement cage under a kind of coral reef geology, it is applied under coral reef geology, cast-in-situ bored pile Work progress in the hole that runs into, it is characterised in that including:
Fixed mount, it is hollow tubular steel reinforcement cage, is set around the outside of pile foundation steel bar cage, and the fixed mount Upper end is located at the top that hole hole is pushed up, and its lower end is located at the lower section at hole hole bottom;
Isolate supporting layer, be close to the outside of fixed mount around two ends that are fixed and being open sealing, by fixed mount Inside isolate with described hole.
2. it is applied to the flexible shroud of steel reinforcement cage under coral reef geology as claimed in claim 1, it is characterised in that the fixation Frame is followed successively by from inside to outside:
Transverse steel, its one end and the pile foundation steel bar cage cage bar vertical welding, and the transverse steel is in the fixed mount In plane where axis, the transverse steel is uniformly distributed multiple in perpendicular and in horizontal plane, is provided with transverse direction The highest level face of reinforcing bar is located at the top that hole hole is pushed up, and is provided with the floor level face of transverse steel positioned at hole hole bottom Lower section;
Vertical reinforcement, the quantity of the vertical reinforcement is multiple, and the vertical outside for being vertically installed in transverse steel, and with institute The other end welding of transverse steel is stated, the upper end of vertical reinforcement is located at the top that hole hole is pushed up, and under the vertical reinforcement Lower section of the end positioned at hole hole bottom;
Outside stirrup, the quantity of the outside stirrup is multiple, and transverse horizontal is on the outside of vertical reinforcement and fixed around being arranged at, Horizontal plane where the outside stirrup of its topmost is located at level where the top that hole hole is pushed up, and the outside stirrup of its foot Face is located at the lower section at hole hole bottom.
3. it is applied to the flexible shroud of steel reinforcement cage under coral reef geology as claimed in claim 1, it is characterised in that the isolation Supporting layer and fixed mount be fixedly installed for:
The top and bottom iron wire that isolate supporting layer are enclosed and are tightened on fixed mount around at least one, and the isolation The top loop of supporting layer is located at the top that hole hole is pushed up around the position of iron wire, and the lower loop of the isolation supporting layer is around the position of iron wire Setting in the lower section at hole hole bottom.
4. it is applied to the flexible shroud of steel reinforcement cage under coral reef geology as claimed in claim 1, it is characterised in that the isolation Supporting layer is followed successively by from inside to outside:
Medial support material, it is close to outside level of fixed mount around setting an at least circle, and by the medial support material Top and bottom iron wire around at least one enclose and be tightened on fixed mount;
Middle part water proof material, its outside for being close to medial support material is horizontally disposed with least circle, and by the middle part water proof material The top of material and bottom iron wire are enclosed and are tightened on fixed mount around at least one;
Outside-supporting material, its outside for being close to middle part water proof material is horizontally disposed with least circle, and by the lateral branch timbering The top of material and bottom iron wire are enclosed and are tightened on fixed mount around at least one.
5. it is applied to the flexible shroud of steel reinforcement cage under coral reef geology as claimed in claim 4, it is characterised in that the inner side Backing material and outside-supporting material are geotextiles, and the middle part water proof material is plastic sheeting.
6. a kind of usage right requires to be applied to the construction of the flexible shroud of steel reinforcement cage under the coral reef geology described in any one of 1-5 Method, it is characterised in that comprise the following steps:
1) before the construction of cast-in-situ bored pile, geological prospecting is carried out, to primarily determine that hole location;
2) steel pile casting is buried, drilling and forming hole operation is carried out;
3) flexible shroud is made on steel reinforcement cage, the upper end of flexible shroud is located at the top that hole hole is pushed up, its lower end is located at hole The lower section at hole hole bottom;
4) decentralization of the steel reinforcement cage with the flexible shroud and spreading, are completed until steel reinforcement cage is transferred;
5) concrete perfusion, completes the perfusion of cast-in-situ bored pile.
7. as claimed in claim 6 using the construction method for the flexible shroud for being applied to steel reinforcement cage under coral reef geology, it is special Levy and be, it is described that concretely comprising the following steps for flexible shroud is made on steel reinforcement cage:
S1:Determine the position of flexible shroud, and the horizontal steel of outside level welding of the pile foundation steel bar cage cage bar in corresponding position One end of muscle, and ensure the other end of the transverse steel in the plane where the axis of the fixed mount;
S2:The other end of the transverse steel is welded in the inner side of vertical reinforcement, and its vertical surround is arranged at horizontal steel The outside of muscle;
S3:Fixed outside stirrup, in vertical reinforcement laterally outside around outside stirrup, and fixation is tightened with iron wire.
S4:Be close to the circle of outside one of fixed mount around medial support material is set, with iron wire by the top of medial support material and Lower loop encloses around at least one and tightens iron wire;
S5:It is close to the circle of outside one of medial support material around middle part water proof material is set, with iron wire by middle part water proof material Top and lower loop enclose around at least one and tighten iron wire;
S6:It is close to the circle of outside one of middle part water proof material around outside-supporting material is set, with iron wire by outside-supporting material Top and lower loop enclose around at least one and tighten iron wire, produce the flexible shroud.
8. as claimed in claim 6 using the construction method for the flexible shroud for being applied to steel reinforcement cage under coral reef geology, it is special Levy and be, the top of the flexible shroud is pushed up higher than hole hole and apart from its 0.5m-1.5m, and the bottom of the flexible shroud is low In hole hole bottom and apart from its 0.5m-1.5m.
CN201710254034.7A 2017-04-18 2017-04-18 Suitable for the flexible shroud and its construction method of steel reinforcement cage under coral reef geology Pending CN107190736A (en)

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CN108643176A (en) * 2018-05-22 2018-10-12 高柱福 A kind of antirust arbor of building apertures stake reinforced column
CN110259456A (en) * 2019-05-21 2019-09-20 中交一公局集团有限公司 A kind of karst cave treatment method of constructing tunnel
CN111101513A (en) * 2019-12-30 2020-05-05 北京城乡中昊建设有限责任公司 Rust-resistant structure of foundation pile

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CN203741820U (en) * 2014-02-21 2014-07-30 安徽省公路桥梁工程有限公司 Cast-in-situ bored pile structure for karst area
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108643176A (en) * 2018-05-22 2018-10-12 高柱福 A kind of antirust arbor of building apertures stake reinforced column
CN110259456A (en) * 2019-05-21 2019-09-20 中交一公局集团有限公司 A kind of karst cave treatment method of constructing tunnel
CN110259456B (en) * 2019-05-21 2020-08-18 中交一公局集团有限公司 Karst cave treatment method for tunnel construction
CN111101513A (en) * 2019-12-30 2020-05-05 北京城乡中昊建设有限责任公司 Rust-resistant structure of foundation pile
CN111101513B (en) * 2019-12-30 2021-05-11 北京城乡中昊建设有限责任公司 Rust-resistant structure of foundation pile

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