CN1037286C - Multi-layer integrate working pile supporting system and working method - Google Patents
Multi-layer integrate working pile supporting system and working method Download PDFInfo
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- CN1037286C CN1037286C CN91106203A CN91106203A CN1037286C CN 1037286 C CN1037286 C CN 1037286C CN 91106203 A CN91106203 A CN 91106203A CN 91106203 A CN91106203 A CN 91106203A CN 1037286 C CN1037286 C CN 1037286C
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Abstract
The present invention relates to a supporting system of multilayer integral working piles, which is composed of a hollow pile and a closed rigid frame of the pile top, wherein the hollow pile is made of reinforced concrete; ribbed slabs are arranged in the hollow pile, or dense sand soil is filled in a ribbed ring; the bottom of the pile extends out of a front foot and a back foot; vertical ribs of a pile body are provided with directional anti-pushing row pile walls composed of working piles. The supporting system sufficiently performs the anti-bending function of a supporting pile, and has a large anti-bending section modulus; the supporting system does not need to install an anchor rod or the later secondary support of soil among the piles. The supporting system has the advantages of saving steel material and cement, shortening a working period, and reducing the engineering cost by 20 to 30%; the supporting system does not have noise, vibration disturbance or pollution.
Description
The present invention relates to a kind of foundation pit supporting construction of building and job practices thereof.
The develop rapidly of urban construction causes building density more and more big.People in order to obtain more usable floor area, except to high-altitude development part, also just become inevitable approach to underground development, and building also can be obtained good energy-saving effect to underground development on limited soil.The ground support engineering that develops rapidly has both at home and abroad at present catered to this needs just.
The means that current domestic and international ground support engineering is taked mainly contain steel sheet pile one anchor pole, ways such as diaphragm wall one anchor pole, publish China Construction Industry Press in April, 1989 " foundation engineering is handled handbook and has been introduced seattle, u.s.a Columbia mansion foundation ditch dado engineering, this mansion exceeds 287 meters in the street, 76 layers, dark 37 meters of foundation ditch, foundation ditch retaining wall rib intercolumniation is every 4 meters, adopt the thick retaining wall of 10～15cm between the rib post, every 37 meters long rib post need be used 20-30 root anchor pole.Chinese invention patent disclose name be called " space structures props up slope protection pile " application number be 88100236 it comprise that the piling wall that many steel concrete soldier piles are formed is provided with coupling beam on this top, this top also is connected with along the arched frame of piling wall side direction, and this comprises arch ring and pull bar.Adopt these stakes also need establish anchor pole when big, make the construction costs height when excavating the degree of depth, long construction period, some stake produces noise and vibrations interference to surrounding resident in construction, also have slurry coat method exhaust emission etc. sometimes.
These are referred in the supporting and protection structure of mainly bearing lateral load, be difficult to bring into play optimum efficiency, because of the soldier pile major function is bending resistance, require stake itself to have the big module of anti-bending section of trying one's best, and its cloth muscle also should have corresponding requirement with structure.
The object of the present invention is to provide a kind of foundation pit supporting construction and job practices thereof, the bending resistance function that it can give full play to soldier pile itself need not be provided with anchor pole, do not need the supporting inter-pile soil later stage is carried out secondary supporting, the insert depth of stake can be shortened greatly, steel, cement, reduction construction costs can be saved.This foundation pit supporting construction comprises this working pile itself, and is made of the anti-campshed wall and stake top rigid frame or bow member of pushing away that can bear a top rigid frame or bow member counter-force that this working pile is formed.
1. multilayer position working pile is the nuclear center of this support system, and it is being made up of cooperative following several parts of making of a kind of steel concrete, is used for increasing stake and soil layer frictional force indentation concrete guard wall 3.This retaining wall contains outer shroud muscle 17 and perpendicular muscle 19, concrete inner wall 4 contains interior ring muscle 18 and the perpendicular muscle 5 of directionality is arranged, the edge vertically was provided with floor or gilled rings 6 according to loading characteristic in stake was hollow, it can be brought into play whole bending resistance effectively and cut sexual function, stake bill kept on file toe 8 before and after stretching out, front and back toe 8 includes steel bar stress 20, is used for increasing stake overturning or slip resistance analysis moment, and strengthen opposing effectively because of excavating toppling of causing, the close back-up sand soil 7 of hollow part in the stake; Collar tie beam 2 is established on the stake top, and pile wall thickness and cloth muscle are close can determine that relevant formula slightly by stressed size by calculating.
2. the anti-campshed wall that pushes away, when control is opened foundation ditch and is become plane 14 shapes as shown in Figure 5, its AB and DE bow member thrust are born by the campshed on BC and the CD, thereby constitute the anti-campshed wall 10 that pushes away, the adjacent studs retaining wall point of contact, the left and right sides that its solid matter is tangent maintains the concrete surface that is not less than 240 mm wides, and contact surface links to each other with tongue and groove shape 15, set up the tension rib of stake about connection at stressed larger part, this tension rib has level to connect 16A or oblique connection 16B, 16C.
3. the stake closedtop closes rigid frame or bow member, it is the reinforced concrete structures that have vertical muscle and stirrup that its king-pile closedtop closes rigid frame 9: stake crown frame is by the arch ring 11 that crouches within same horizontal plane of underground or same inclined-plane, straining beam 12 and pull bar 13 constitute, wherein arch ring is a fluid concrete in the former groove of broken line shape is dug on ground, in be furnished with distributing bar, straining beam is used for balance arch ring left and right sides end thrust, and pull bar is to be made by the reinforcing bar that two ends are welded with anchor slab.Be used to connect straining beam 12 and arch ring 11.
The job practices of this foundation pit supporting construction comprises:
A, shoveling retaining wall pore-forming technique, adopt merogenesis to make continuously downwards:
By the perpendicular muscle 19 of designing requirement borehole → colligation retaining wall, outer shroud muscle 17 → formwork (being combined into some arc formwork pieces 21 and stiffener angle 22) → folding mould is (after a period of time, carry out can roll over mould intensity the time when concrete reaches) → repeat above-mentioned operation and reach design elevation, expand the end, toe 8 before and after being provided with, pore-forming finishes.
B, pile body inwall moulding process:
Toe steel bar stress 20 before and after the colligation in the hole, perpendicular muscle 5, interior ring muscle 18 → expansion bottom concrete pouring is to designing requirement height → interior sliding formwork such as Figure 10, shown in Figure 11, interior sliding formwork is by steel sheet 23, suspension hook 24 and stiffener angle 25 formation → limit fluid concretes, interior sliding formwork is carried on the limit, and close back-up sand soil 7, cast floor 6 concrete behind the sliding formwork in sky is carried, → repeat above-mentioned operation to reach till the design stake top mark height.
The making that c, stake closedtop close rigid frame or bow member:
It is the reinforced concrete structures that are furnished with vertical muscle and stirrup that the stake closedtop closes rigid frame 9; Stake crown frame is by arch ring 11, and straining beam 12 and pull bar 13 constitute, and arch ring is a fluid concrete in the former groove of broken line that ground is dug, and is furnished with distributing bar, and pull bar is to be made by the reinforcing bar that two ends are welded with anchor slab, is used to connect straining beam and arch ring.
In above-mentioned activities, must be noted that:
1. borehole retaining wall merogenesis is made downwards continuously, and the perpendicular muscle 19 of internode requires to have enough lap length up and down, and ring muscle 17 is made on request:
2. toothing is done in the inside and outside both sides of retaining wall, saves retaining wall up and down and will be linked to be integral body, is beneficial to co-operation;
3. shoveling retaining wall pore-forming needs one to carry out every a ground, antagonism pushes away the adjacent studs retaining wall tangent plane of campshed wall, maintain the contact surface that is not less than 240 mm wides, make the concrete bonding of left and right sides retaining wall 3 firm, become tongue and groove shape 15 to link to each other, to clean processing with water to the retaining wall crust that has completed and set up the horizontal tension rib 16A that connects left and right sides post at stressed larger part, or oblique tension rib 16B, 16C
4. the perpendicular muscle 5 of colligation in the hole encircles muscle 18 and requires by the orientation arrangement of reinforcement, promptly at stressed large part arrangement of reinforcement;
5. perpendicular muscle 5 stretches out a top mark eminence will sufficient length.So that connect into integral body with stake top rigid frame or stake crown frame.
The present invention and existing supporting pile structure system relatively have following advantage:
1. this courage can constitute very favourable space support system, and it unites two into one stake and inverted T type retaining wall, is that inverted T type retaining wall is formed in stake again, and the single stake of will dispersing organically is combined into anti-thrust piling wall;
2. the anti-campshed wall that pushes away, when control is opened foundation ditch and is become plane 14 shapes as shown in Figure 5, its AB and DE go up bow member thrust and are born by the campshed on BC and the CD, thereby constitute the anti-campshed wall 10 that pushes away, the adjacent studs retaining wall point of contact, the left and right sides that its solid matter is tangent maintains the concrete surface that is not less than 240 mm wides, and contact surface links to each other with tongue and groove shape 15, set up the tension rib of stake about connection at stressed larger part, this tension rib has level to connect 16A or oblique connection 16B, 16C.
3. this multi-layer integrate working pile is added an end stretch and is gone out the front and back toe because design is hollow, and section can significantly strengthen, and has new dimensional effect and rigidity effect, is that a kind of formed in situ secretly sets the underground lateral resisting structure system of inverted T-shaped;
4. the employing of horizontal bow member has strengthened the globality of multi-layer integrate working pile supporting system;
When this support system form anti-push away the campshed wall after, its anti-side ability has not been the summation of the anti-side ability of each single pile, but brings up to the anti-side ability of the such big multiple of square value of stake sum hurriedly;
6. this working pile is hollow, can utilize that on-the-spot sand is close to be filled out, and reduces residual scholar's outward transport;
7. this support system is not owing to need be provided with anchor pole, and the general stake of the length of stake is short, reduces the insert depth of stake greatly, can save steel, cement, reduction engineering and make Jie 20-30%;
8. noiseless in the construction shakes and disturbs and pollution, can protect network of underground well, realizes civilized construction, and is safe and reliable;
9. owing to adopt artificial shoveling pore-forming, need not large-scale special mechanical equipment, it is simple to have a construction, and the scope of operation can be launched simultaneously, effective reduction of erection time, and can be society and create job opportunities.
Description of drawings:
Fig. 1 is the multi-layer integrate working pile structural representation of the anti-supporting and protection structure of this base
Fig. 2 is this working pile sectional drawing
Fig. 3 is that a closedtop closes the rigid frame schematic diagram
Fig. 4 is a crown frame schematic diagram
Fig. 5 is the special-shaped shape schematic diagram of a top plane rigid frame
Fig. 6 is anti-adjacent two connection diagrams of campshed wall that push away
Fig. 7 is that the tongue and groove shape connects the adjacent studs full-page proof
Fig. 8 is that adjacent two tension rib connected mode: A are that horizontal tension rib connects; B, C are that oblique tension rib limit connects
Fig. 9 is the arc formwork schematic diagram
Sliding formwork schematic diagram in Figure 10
Sliding formwork generalized section in Figure 11.
Mark among the figure: 1 multi-layer integrate working pile pile body, 2 collar framves, 3 concrete guard walls, 4 concrete inner walls, 5 inwalls erect muscle, 6 floors or gilled rings, 7 packing sands, 8 front and back toes, 9 sealing rigid frames, 10 anti-push away the campshed wall, 11 arch rings, 12 straining beams, 13 pull bars, the special-shaped shape of 14 plane rigid frames, 15 adjacent two pile wall tongue and groove shapes link, adjacent two the horizontal tension ribs of 16A, 16B, the oblique tension rib of 16C adjacent studs, 17 outer shroud muscle, 18 interior ring muscle, 19 retaining walls erect muscle, 20 front and back toe steel bar stresses, 21 arc formwork pieces, 22 stiffener angles, 23 interior sliding formworks, 24 carry the mould suspension hook, 25 interior sliding formwork stiffener angles.
The engineering construction example
Certain engineering is built and need dark 10.5 meters of excavation pit on the intensive plot of surrounding buildings thing; carry out supporting with technical solution of the present invention; 1.75 meters in design stake footpath; stake is long 13 meters, 1.8 meters of pilespacings, after the support engineering completion through the several months; whole support system is intact; successfully protected apart from foundation ditch one side the only heavy over thousands of ton in 1.0 meters interim water tank room (foundation-free), about 5 meters independent shallow foundation the 3rd floor distribution buildings on distance foundation ditch one side, this two building all is not subjected to a bit influence because of excavation of foundation pit.
Claims (9)
1. foundation pit supporting construction, comprise the multi-layer integrate working pile of making by steel concrete, the anti-campshed wall of forming by this working pile that pushes away that bears a top rigid frame or bow member counter-force, and stake top rigid frame or bow member composition, it is characterized in that: there is zigzag concrete guard wall (3) the inside and outside both sides of this working pile pile body (1), this working pile is a hollow pile, and along vertically according to loading characteristic floor or gilled rings (6) being set, the stake bill kept on file was to stretching out front and back toe (8) in stake was hollow; The tangent plane of the retaining wall (3) of the anti-left and right sides adjacent studs of being made up of multilayer position working pile one by one that pushes away campshed wall (10) is not less than 240 millimeters contact surface, forms tongue and groove shape (15) and links to each other.
2. according to the described foundation pit supporting construction of claim 1, it is characterized in that: zigzag concrete guard wall (3) contains outer shroud muscle (17) and perpendicular muscle (19).
3. according to the described foundation pit supporting construction of claim 1, it is characterized in that: the perpendicular muscle (5) of ring muscle (18) and directionality in this concrete inner wall (4) contains.
4. according to the described foundation pit supporting construction of claim 1, it is characterized in that: the tension rib of stake can be horizontal tension rib (16A) about connection, also can be oblique tension rib (16B), (16C).
5. according to the described foundation pit supporting construction of claim 1, it is characterized in that: the close back-up sand soil of hollow part (7) in the hollow pile.
6. the job practices of a foundation pit supporting construction comprises: shoveling retaining wall pore-forming technique, and it comprises pile body inwall moulding process again and a stake closedtop closes rigid frame or bow member is made, and it is characterized in that:
After a, shoveling retaining wall pore-forming reach design elevation, carry out at the bottom of the unidirectional expansion, at the bottom of establishing before and after toe (8).
B, pile body inwall moulding process comprise: the perpendicular muscle (5) of colligation stake toe steel bar stress (20) inwall in the hole, interior ring muscle (18), after enlarged base concrete is poured into the designing requirement height, sliding formwork in, limit fluid concrete Bian Timo, and packing sand (7) are after the relevant position sky is carried sliding formwork, cast floor (6) concrete repeats above-mentioned operation and reaches till the top mark height.
7. according to the described job practices of claim 6, it is characterized in that: shoveling retaining wall pore-forming needs one to carry out every a ground, when multi-layer integrate working pile is formed the anti-row of pushing away wall, the tangent plane of adjacent studs retaining wall should maintain the contact surface that is not less than 240 mm wides, the concrete of left and right sides retaining wall is contacted, be bonded to tongue and groove shape (15) and link to each other, set up the horizontal level knot muscle (16A) of stake about connection or oblique tension rib (16B), (16C) at stressed bigger position.
8. according to the described job practices of claim 6, it is characterized in that: perpendicular muscle (5) should stretch out a top mark eminence enough length, so that a same stake closedtop closes rigid frame or bow member is linked to be an integral body.
9. according to the described job practices of claim 5, it is characterized in that: the arch ring (11) of stake crown frame is a fluid concrete in the former groove of broken line shape is dug on ground, and is furnished with distributing bar; Pull bar (13) is to be made by the reinforcing bar that two ends are welded with anchor slab, and pull bar (13) is used to connect arch ring (11) and straining beam (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91106203A CN1037286C (en) | 1991-07-12 | 1991-07-12 | Multi-layer integrate working pile supporting system and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91106203A CN1037286C (en) | 1991-07-12 | 1991-07-12 | Multi-layer integrate working pile supporting system and working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1058247A CN1058247A (en) | 1992-01-29 |
| CN1037286C true CN1037286C (en) | 1998-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91106203A Expired - Fee Related CN1037286C (en) | 1991-07-12 | 1991-07-12 | Multi-layer integrate working pile supporting system and working method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761085B (en) * | 2009-12-18 | 2011-05-25 | 铁道第三勘察设计院集团有限公司 | Built-in anchor head embedded-type anchoring pile |
| CN104234479B (en) * | 2014-09-05 | 2016-08-24 | 上海市政工程设计研究总院（集团）有限公司 | A kind of combined type well tubular structure for underground stereo garage parking |
| CN110814208B (en) * | 2019-09-30 | 2021-07-02 | 浙江交工集团股份有限公司 | Processing technology of stirrup |
| CN110985082B (en) * | 2019-12-25 | 2020-10-16 | 中国矿业大学(北京) | Intelligent reinforcement device and method for micro-damage of thin top plate of grotto in ancient cultural relics and ancient relics |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU576368A1 (en) * | 1976-06-23 | 1977-10-15 | Snezhko Oleg V | Anti-landslide arrangement |
| SU983198A1 (en) * | 1980-12-05 | 1982-12-23 | Кубанский Ордена Трудового Красного Знамени Сельскохозяйственный Институт | Retaining wall and method of erecting same |
| CN1008381B (en) * | 1988-01-25 | 1990-06-13 | 北京市城区第四建筑工程公司 | Spatial structured piles for slope protection |
-
1991
- 1991-07-12 CN CN91106203A patent/CN1037286C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU576368A1 (en) * | 1976-06-23 | 1977-10-15 | Snezhko Oleg V | Anti-landslide arrangement |
| SU983198A1 (en) * | 1980-12-05 | 1982-12-23 | Кубанский Ордена Трудового Красного Знамени Сельскохозяйственный Институт | Retaining wall and method of erecting same |
| CN1008381B (en) * | 1988-01-25 | 1990-06-13 | 北京市城区第四建筑工程公司 | Spatial structured piles for slope protection |
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| Publication number | Publication date |
|---|---|
| CN1058247A (en) | 1992-01-29 |
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