CN207878472U - Solid matter step type rotary digging pile supporting system - Google Patents

Solid matter step type rotary digging pile supporting system Download PDF

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Publication number
CN207878472U
CN207878472U CN201721927374.3U CN201721927374U CN207878472U CN 207878472 U CN207878472 U CN 207878472U CN 201721927374 U CN201721927374 U CN 201721927374U CN 207878472 U CN207878472 U CN 207878472U
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China
Prior art keywords
diaphragm
enhancing
steel
stake
solid matter
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CN201721927374.3U
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Inventor
秦龙海
江涌波
黎强
林君伟
林沛钿
邹毅
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GUANGZHOU FOURTH CONSTRUCTION Co Ltd
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GUANGZHOU FOURTH CONSTRUCTION Co Ltd
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Abstract

The utility model discloses a kind of solid matter step type rotary digging pile supporting systems, including diaphragm wall and enhancing stake, the diaphragm wall is mounted in the hole slot got through by rotary drilling rig, the enhancing stake is in the hole slot that diaphragm wall front side is got through by rotary drilling rig, the plane where several enhancing stakes disposed in parallel and the plane parallel where diaphragm wall.Due to using different stake sections, the advantage that concreting is closely knit, seam is secured is realized, construction procedure understands, smart structural design, and application prospect is good, moreover it is possible to reduce rotary digging stake cost, not only ensure that the safety but also saving construction cost of support system.

Description

Solid matter step type rotary digging pile supporting system
Technical field
The utility model is related to the realm of building construction, particularly relate to a kind of solid matter step type rotary digging pile supporting system.
Background technology
In Process of Urban Development, as building basement function is more and more, basement depth is more and more deeper, this just makes It is more and more deeper at basement foundation ditch depth, for large-scale deep-foundation pit engineering, deep foundation pit support is carried out frequently with diaphram wall.
Currently used deep basal pit continuous wall construction method has the construction of punching bottler placer, that is, perforating press is used to excavate underground soil Pore-forming, into the hole of perforating press formation, concrete perfusion forms Percussion Piles diaphragm wall, and the construction method work efficiency is good, and application is more wide It is general.But Percussion Piles also have certain problem, mainly punching pile driving construction to enter rock speed compared with slow, rock drilling ability is poor, construction is made an uproar Sound is big, Percussion Piles diaphram wall of constructing in the intensive city of building, is easy to bring larger noise dirty to surrounding resident Dye, influences the normal life of surrounding resident.
Common construction method of underground continuous wall also has Spiral digging machine construction diaphram wall, and underground is pierced using rotary pile-digging machine Soil taking hole forming, then casting concrete forms armored concrete diaphram wall, rotary pile-digging machine construction diaphram wall in hole Construction noise is low, grooving high degree of automation, the speed that fetches earth are fast, greatly reduces the environmental pollution to Adjacent Buildings.Using Foreground is preferable.
Currently used rotary digging stake diaphram wall, there is also certain problems, since rotary digging stake diaphragm wall needs to be segmented It pours, technology is handled between rotary digging stake diaphragm wall respectively segmentation and is also more short of at present, and diaphragm wall is overlapped between being respectively segmented and poured When, it is susceptible to concreting leakiness, the problems such as seam is insecure, needs to be improved construction technology.Designed In the design, the entire elongated sectional dimension of stake is almost the same, not directed to the distribution of force of entire diaphragm wall for rotary digging stake diaphragm wall Situation takes corresponding design method and arrangement and method for construction, and it is therefore necessary to take different stakes to cut for the stressing conditions of diaphragm wall Face not only ensure that the safety but also saving construction cost of support system to reduce rotary digging stake cost.
Utility model content
For some problems existing for the above rotary digging pile driving construction scheme, the utility model proposes a kind of solid matter step type rotary diggings Pile supporting system and its construction method.
What a kind of technical solution that the utility model uses was realized in:Solid matter step type rotary digging pile supporting system, packet Diaphragm wall and enhancing stake are included, the diaphragm wall is mounted in the hole slot got through by rotary drilling rig, and the enhancing stake is set to continuous It is flat where the plane and diaphragm wall where several enhancing stakes disposed in parallel in the hole slot got through by rotary drilling rig on front side of wall Face is parallel.
As the preferred embodiment of the utility model, the diaphragm wall is segmentation connected structure, and the diaphragm wall includes several The wall unit that head and the tail are sequentially connected, the wall element length are M, wherein M≤5m, and the wall unit includes the framework of steel reinforcement of inside With the concreting portion outside framework of steel reinforcement, the corresponding hole slot of the wall unit is filled up in the concreting portion.
As the preferred embodiment of the utility model, the framework of steel reinforcement includes reinforcing bar portion, and the reinforcing bar portion is inserted vertically into hole In slot, wherein a side at left and right sides of the reinforcing bar portion is fixed with outer channel steel, and another side is fixed with interior channel steel;Adjacent two steel The connecting pin of tendons skeleton passes through the outer channel steel of two frameworks of steel reinforcement and the chimeric linking for completing adjacent two framework of steel reinforcement of interior channel steel.
As the preferred embodiment of the utility model, two top flanges of the interior channel steel are connected with leakage-stopping board, described to stop The free end of bushing and the hole wall of neighbouring slot fit closely.
As the preferred embodiment of the utility model, the reinforcing bar portion includes the steel grid being arranged side by side before and after N groups, adjacent It is connected and fixed by stirrup between two steels grid, wherein N >=2.
As the preferred embodiment of the utility model, the steel grid is handed over by several vertical reinforcements and several horizontal reinforcements It folds.
As the preferred embodiment of the utility model, the enhancing stake includes internal enhancing stake reinforcing bar and external concrete Portion is poured, the enhancing stake reinforcing bar includes enhancing stake vertical bars and enhancing pile ring muscle.
Implement above-mentioned technical proposal, concreting is closely knit, seam is firm due to using different stake sections, realizing Advantage, construction procedure understand, smart structural design, and application prospect is good, moreover it is possible to reduce rotary digging stake cost, both ensure that supporting The safety and saving construction cost of system.
Description of the drawings
Fig. 1 is the utility model rotary digging pile driving construction precedence diagram;
Fig. 2 is the utility model rotary digging pile driving construction schematic diagram;
Fig. 3 is the utility model rotary digging pile driving construction sectional view;
Fig. 4 is the utility model A-A sectional views;
Fig. 5 is the utility model B-B sectional views;
Fig. 6 is the utility model C-C sectional views;
Fig. 7 is the utility model D-D sectional views;
Fig. 8 is the utility model unit groove section construction schematic diagram.
In figure, the soil body 1, rotary rig 2, drilling rod 3, drill bit 4, casing 5, diaphragm wall 6, outer channel steel 61, interior channel steel 62, vertically Reinforcing bar 63, horizontal reinforcement 64, stirrup 65, leakage-stopping board 66 enhance stake 7, enhancing stake vertical bars 71, enhancing pile ring muscle 72.
Specific implementation mode
It is the solid matter step type rotary digging pile supporting system introduction of the utility model, including diaphragm wall 6, enhancing such as Fig. 1-Fig. 8 Stake 7.Diaphragm wall 6 is reinforced concrete wall structure, and diaphragm wall 6 is not greater than 5m using segmentation pouring construction, each section length, Tight, concrete is overlapped in 6 each section construction of diaphragm wall in order to prevent, spillage influence one-piece casting compactness does not occur, it will be continuous 6 inside framework of steel reinforcement system of wall is improved, the consistent framework of steel reinforcement of 6 each sectional making specification of diaphragm wall, framework of steel reinforcement by Outer channel steel 61, interior channel steel 62, vertical reinforcement 63, horizontal reinforcement 64, stirrup 65, leakage-stopping board 66 form.The reinforcing bar of each segmentation Outer channel steel 61 is arranged in frame horizontal direction side, and interior channel steel 62 is arranged in the other side.Interior channel steel 62 is additionally provided with only in two top flanges Bushing 66.The main body of framework of steel reinforcement is made of vertical reinforcement 63, horizontal reinforcement 64, stirrup 65, is bound between three and is connected to one It rises (common-sense way, do not repeat herein), wherein 64 both ends of horizontal reinforcement are respectively welded at outside 61 slot of outer channel steel, other end weldering It is connected on the slot inner face of interior channel steel 62.The framework of steel reinforcement being respectively segmented can be continuously plugged in together, both the framework of steel reinforcement of a segmentation Outer channel steel 61 can in the interior channel steel 62 of the vertical top-down framework of steel reinforcement for being inserted in an adjacent segmentation, once outer channel steel 61 are inserted in interior channel steel 62, the reliable overlap joint of the framework of steel reinforcement of an adjacent segmentation may be implemented, to dividing each diaphragm wall 6 Duan Lianxu connects together stress, and this knockdown framework of steel reinforcement bridging method can greatly enhance the entirety of diaphragm wall 6 Property, while improving construction efficiency.The main function of the leakage-stopping board 66 is, when pouring the segmentation of each diaphragm wall 6, inside groove 62 symmetrical two pieces of leakage-stopping boards 66 of steel are vertically embedded into the foundation trench soil body, and when pouring a segmentation, leakage-stopping board 66 can prevent from pouring Concrete is leak into the adjacent segmentation not poured when building concrete, and what diaphragm wall 6 was respectively segmented caused by preventing concrete spillage pours Build leakiness.
Enhance the same conventional design layout of 7 design method of stake, enhancing stake is by concrete and enhancing stake vertical bars 71, enhancing pile ring muscle 72 compositions, enhancing stake 7 are constructed again after diaphragm wall 6 pours completion, and it is whole long that enhancing 7 entire length of stake is less than diaphragm wall 6 Degree, enhancing 7 elevation of top of stake are less than 6 elevation of top of diaphragm wall, and absolute altitude is located at foundation pit middle part absolute altitude hereinafter, the enhancing stake 7 can To make up the lateral hypodynamic problem of diaphragm wall 6, enhancing diaphragm wall 6 is played in the case of 6 finite thickness of diaphragm wall and is laterally held The effect of ability, the enhancing stake 7 are arranged according to support system lateral force feature, and it is anti-can effectively to enhance 6 bottom of diaphragm wall Lateral hypodynamic problem.
As shown in Fig. 2, be rotary digging pile driving construction schematic diagram, rotary pile-digging machine mainly by rotary drilling rig fuselage 2, drilling rod 3, drill bit 4, Casing 5 forms, and drill bit 4, which can be removed, replaces other drill bits and equipment, to drilling when 5 main function of the casing is drilling machine pore-forming It is protected.Rotary drilling rig fuselage 2 imparts power to drilling rod 3, and drilling rod 3 starts to rotate and drill bit 4 has been driven to rotate, drill bit 4 For cylinder, 4 end of drill bit, which starts to be rotated down, cuts soil, and drill bit 4 gradually pierces in soil 1 vertically downward with rotation, drill bit 4 Rotation carries soil to ground or more in rotation, and soil is poured out.
Construction method using solid matter step type rotary digging pile supporting system includes the following steps:
A. determine whether to use mud off.The regional geology situation for needing pore-forming determining first, the centering of Spiral digging machine pore-forming, Micro- weathered rock formation is constructed without mud off, for muck soil, clay and sand, since hole wall is unstable, need to make mud Carry out into holes protecting wall.
B. making and embedded steel pile casting 5 roll steel pile casting using thickness not less than 10mm steel plates, and casing internal diameter is more than rotary digging Stake drill bit of drilling machine diameter 200mm when casing is embedding deeper, is welded to connect use using more piece steel pile casting, is higher by ground at the top of casing Face is less than 0.3m.
C. 6 grooving scheme of diaphragm wall.As shown in Figure 1, diaphragm wall 6 scrapes out slot using rotary drilling rig jump, by 1. → 3. → 2. → 5. → 4. → 7. → 6. → 9. → 8. shown sequence drilling, diaphragm wall 6 are not more than 5m per unit groove segment length.
D. 6 one slot section rotary digging constructions of diaphragm wall.When rotary drilling rig starts drilling, first light pressure slow-speed, rear gradually increase turn Speed and turn pressure, by weak soil to hard rock, deceleration slow-speed drill bit 4 continuously repeats to pierce drill bit 4 in hole, make up and down after pore-forming Rotary digging drilling hole is whole more to be stablized.
E. in 6 one clear slots of slot section of diaphragm wall.After 6 one slot section grooving of diaphragm wall, slot bottom is cleared up, it is anti-by pumping Cycle carries out slot bottom borehole cleaning.
F. 6 one slot section frameworks of steel reinforcement of diaphragm wall are placed.By the framework of steel reinforcement of make slot section (including outer groove Steel, interior channel steel, vertical reinforcement, horizontal reinforcement, stirrup etc., before have been introduced) be inserted into the good slot section of rotary digging, reinforcing bar Frame center alignment slot section center, falls slowly, and the entire framework of steel reinforcement of dropping process must not have larger swing.After placing framework of steel reinforcement Timely measuring flume section bottom sediment thickness, sediment thickness are not greater than 50mm.Before placing framework of steel reinforcement, rotary pile-digging machine drill bit 4 are changed to steel brush, and the adjacent interior channel steel 62 for having poured slot section is cleared up using steel brush, make the outer channel steel in the slot section that needs pour 61 reliably can be inserted in overlap joint with poured slot section 62.
G. a slot section diaphragm wall is poured to pour by the way of pumping as shown in figure 8, pouring the diaphragm wall of a slot section The concrete in a slot section is built, leakage-stopping board 66 blocks concrete not to slot section leakage is not poured, and preventing spillage influences to connect 6 overall stability of continuous wall.
H. step d, step f, step e, step f, step g, another slot section of constructing are repeated.It is another to repeat above step construction Slot section.Eventually form diaphragm wall 6.
I. according to the method for step d, rotary digging construction enhancing stake 7.
J. the soil body in foundation pit is cut out, entire support system is formed.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection domain within.

Claims (7)

1. a kind of solid matter step type rotary digging pile supporting system, which is characterized in that including diaphragm wall (6) and enhancing stake (7), the company Continuous wall is mounted in the hole slot got through by rotary drilling rig, and the enhancing stake (7), which is set on front side of diaphragm wall (6), passes through rotary drilling rig In the hole slot got through, the plane where several enhancing stakes (7) disposed in parallel and the plane parallel where diaphragm wall (6).
2. solid matter step type rotary digging pile supporting system according to claim 1, which is characterized in that the diaphragm wall (6) is It is segmented connected structure, the diaphragm wall (6) includes the wall unit that several head and the tail are sequentially connected, and the wall element length is M, wherein M≤5m, the wall unit include the concreting portion outside internal framework of steel reinforcement and framework of steel reinforcement, the concreting The corresponding hole slot of the wall unit is filled up in portion.
3. solid matter step type rotary digging pile supporting system according to claim 2, which is characterized in that the framework of steel reinforcement includes Reinforcing bar portion, the reinforcing bar portion are inserted vertically into hole slot, and wherein a side at left and right sides of the reinforcing bar portion is fixed with outer channel steel (61), another side is fixed with interior channel steel (62);The outer channel steel that the connecting pin of adjacent two framework of steel reinforcement passes through two frameworks of steel reinforcement (61) and interior channel steel (62) is fitted into the linking for completing adjacent two framework of steel reinforcement.
4. solid matter step type rotary digging pile supporting system according to claim 3, which is characterized in that the interior channel steel (62) Two top flanges are connected with leakage-stopping board (66), and the free end of the leakage-stopping board (66) and the hole wall of neighbouring slot fit closely.
5. solid matter step type rotary digging pile supporting system according to claim 3, which is characterized in that the reinforcing bar portion includes N The steel grid being arranged side by side before and after group is connected and fixed between adjacent two steel grid, wherein N >=2 by stirrup (65).
6. solid matter step type rotary digging pile supporting system according to claim 5, which is characterized in that the steel grid passes through Several vertical reinforcements (63) and several horizontal reinforcements (64) are overlapping obtained.
7. solid matter step type rotary digging pile supporting system according to claim 1, which is characterized in that enhancing stake (7) packet Internal enhancing stake reinforcing bar and external concreting portion are included, the enhancing stake reinforcing bar includes enhancing stake vertical bars (71) and enhancing Pile ring muscle (72).
CN201721927374.3U 2017-12-29 2017-12-29 Solid matter step type rotary digging pile supporting system Active CN207878472U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721927374.3U CN207878472U (en) 2017-12-29 2017-12-29 Solid matter step type rotary digging pile supporting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721927374.3U CN207878472U (en) 2017-12-29 2017-12-29 Solid matter step type rotary digging pile supporting system

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485473A (en) * 2019-08-08 2019-11-22 郑州安源工程技术有限公司 Rectangle active well and its construction method can be recycled in a kind of assembled that presetting detachable door opening

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485473A (en) * 2019-08-08 2019-11-22 郑州安源工程技术有限公司 Rectangle active well and its construction method can be recycled in a kind of assembled that presetting detachable door opening
CN110485473B (en) * 2019-08-08 2021-05-28 郑州安源工程技术有限公司 Assembly type recyclable rectangular working well with preset detachable door opening and construction method thereof

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