CN214061638U - Support-before-dig bored pile and inclined precast pile enclosure - Google Patents
Support-before-dig bored pile and inclined precast pile enclosure Download PDFInfo
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- CN214061638U CN214061638U CN202022128439.6U CN202022128439U CN214061638U CN 214061638 U CN214061638 U CN 214061638U CN 202022128439 U CN202022128439 U CN 202022128439U CN 214061638 U CN214061638 U CN 214061638U
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- pile
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- precast pile
- inclined precast
- bored
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 239000004568 cement Substances 0.000 claims description 15
- 238000011065 in-situ storage Methods 0.000 claims description 13
- 238000009412 basement excavation Methods 0.000 claims description 10
- 230000010485 coping Effects 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 24
- 238000010276 construction Methods 0.000 abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 241000269793 Cryothenia peninsulae Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a support-first and then dig a bored pile and an enclosure of an oblique precast pile, wherein the enclosure comprises a top pressing ring beam, the bored pile and a group of oblique precast piles; one end of the inclined precast pile is fixedly connected with the top pressing ring beam and is arranged at an angle of 15-45 degrees. The utility model has the advantages that: the inclined precast pile is prefabricated, so that the construction is convenient; the support is not needed, the manufacturing cost is low, the energy is saved, the environment is protected, and the popularization is convenient; the composite material has multiple functions of reinforcing, anti-sliding, retaining, water stopping and the like, and the anti-sliding capability of the soil body in the enclosing range is obviously improved.
Description
Technical Field
The utility model belongs to the technical field of foundation ditch engineering, concretely relates to precast pile props earlier and digs bored concrete pile and slant precast pile enclosure afterwards.
Background
The enclosing form used in the prior supporting technology generally adopts a cement-soil gravity type enclosing wall, a profile steel cement-soil mixing wall or a cast-in-situ bored pile plus in-pit horizontal support.
The soil cement gravity type enclosure wall is characterized in that the soil cement gravity type enclosure wall is composed of 'grid-shaped' soil cement piles which are longitudinally and transversely overlapped in a multi-column mode, the soil cement piles are made of cement materials and are stirred with curing agents and foundation soil in a forced mode through stirring machinery, a reinforced retaining wall which is overlapped in a continuous mode and has a certain thickness and an embedding depth is formed, the wall body is stabilized by means of the dead weight of the wall body, the frictional resistance of the wall bottom and the passive soil pressure of the soil body below a foundation pit excavation surface in front of the wall, and the requirements of integral stability, anti-inclination stability, anti-sliding stability, wall body deformation control and the like of the enclosure wall are met. The advantages are that: the general pit has no support, is convenient for fast digging, and has dual functions of soil retaining and water stopping. The disadvantages are that: the displacement control capability is weak, the construction quality is difficult to control, and the economy is general.
The section steel cement soil mixing wall is a composite soil-retaining and water-proof structure formed by inserting section steel into continuously overlapped triaxial cement soil piles. The advantages are that: wide soil application range, small influence on the surrounding environment, good anti-seepage performance, environmental protection, energy conservation, wide soil application range, short construction period, low investment and the like. The disadvantages are that: the construction cost per meter of the foundation pit is high and changes along with the construction period, the construction requirement is high, and the pile forming quality of the cement-soil pile is difficult to control.
The cast-in-situ bored pile and the pit inner support have the advantages that: the soil property and soil layer application range is wide, the influence on the surrounding environment is small, but the defects are as follows: the construction cost per meter of the shallow foundation pit is high, the inner support brings inconvenience to soil excavation, and the support needs to be removed in the later period, so that the construction period is influenced.
In summary, the existing foundation pit supporting structure has no enclosing mode which is relatively economical, safe, energy-saving, environment-friendly and rapid in construction.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a precast pile props earlier and digs bored concrete pile and slant precast pile enclosure according to the weak point of above-mentioned prior art, should enclose through the setting of a certain distance outside the foundation ditch sideline by the assembled structure that coping ring roof beam, bored concrete pile and a set of slant precast pile are constituteed to reach the controllable mesh of reinforcing foundation ditch pithead stability and envelope cost.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
a support-before-dig bored pile and an inclined precast pile enclosure are disclosed, wherein the enclosure comprises a top ring beam, a bored pile and a group of inclined precast piles; one end of the inclined precast pile is fixedly connected with the top pressing ring beam, the inclined precast pile is welded in the reinforcing bars of the top pressing ring beam, and the inclined precast pile and the cast-in-situ bored pile are arranged at an angle of 15-45 degrees.
The inclined precast pile is at least composed of a row of inclined precast piles.
The distance between the oblique precast piles is arranged according to confining pressure.
The connection and fixation means that one ends of the cast-in-situ bored pile and the inclined precast pile are integrally cast in the top ring beam.
The inclined precast piles and the cast-in-situ bored piles need to be arranged in a staggered mode.
The inclined precast pile is applied to an inclined high-pressure jet grouting pile or a single-shaft cement stirring pile.
The utility model has the advantages that the multi-function of reinforcement, earth retaining and water stopping is provided, the deformation of the soil body is restrained, the stability of the pit wall of the foundation pit is enhanced, the vertical excavation is realized, the problem that the conventional slope excavation method occupies a large area of the ground is avoided, the volume of the conventional cement soil gravity type enclosure wall is greatly reduced, the defects of low construction speed, high construction cost, difficult control of the wall quality and the like are overcome, the construction cost is controllable, and the defect that the construction cost of the profile steel cement soil stirring wall is changed due to the construction period is overcome; the inclined precast pile is used as an assembled component, and the characteristics of no need of extra maintenance after on-site construction and the like are achieved, so that the construction period is shortened, and the economical efficiency can be greatly enhanced.
Drawings
FIG. 1 is a schematic sectional view of a foundation pit enclosure
1 pressing top ring beam, 2 drilling cast-in-place pile and 3 inclined precast pile
4 high-pressure jet grouting pile or single-shaft cement stirring pile
FIG. 2 is a plan arrangement of the enclosure
1 top pressing ring beam, 2 oblique precast pile and 3 cast-in-situ bored pile
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Examples
As shown in fig. 1, a support-before-dig bored pile and an enclosure of an inclined precast pile and applications thereof, the enclosure comprises a support 1, a top-pressing ring beam 2, a bored pile 3, a group of inclined precast piles 4, a high-pressure jet grouting pile or a single-shaft cement mixing pile. One end of the inclined precast pile 3 is fixedly connected with the top pressing ring beam 1 and is arranged at an angle of 15-45 degrees with the cast-in-situ bored pile 2.
The utility model relates to a prop earlier and dig drilling bored concrete pile and slant precast pile enclosure and use afterwards, adopt the rig construction, its concrete step is:
1) leveling a construction site, and releasing a real sample according to a construction drawing;
2) after entering and accepting the cast-in-situ bored pile and the inclined precast pile, stacking the cast-in-situ bored pile and the inclined precast pile to a position convenient for construction;
3) constructing the cast-in-situ bored pile at a position with a certain distance behind the side line of the foundation pit;
4) constructing a high-pressure jet grouting pile or a single-shaft cement stirring pile on the inner side of the foundation pit obliquely to a certain depth from the bottom of the foundation pit;
5) starting the manipulator, obliquely inserting the oblique precast pile into the constructed high-pressure jet grouting pile or single-shaft cement stirring pile in the step 4);
6) pouring the top pressing ring beam to enable the top ends of the cast-in-situ bored pile and the inclined precast pile to form an integral structure with the top ends;
7) after the top ring beam in the middle pressure reaches the strength in the step 6), vertically excavating a soil body on the inner side of the cast-in-situ bored pile by slotting, and pouring a reinforcement cushion layer at the bottom of the pit in time;
8) and (3) slope setting and excavation of soil in the foundation pit, construction of a bottom plate and a force transmission belt, construction of an underground structure to +/-0.00, backfilling and chiseling off the inclined precast pile.
Claims (6)
1. A support-before-dig bored pile and an inclined precast pile enclosure are characterized in that the enclosure comprises a top ring beam, a bored pile and a group of inclined precast piles; one end of the inclined precast pile is fixedly connected with the top pressing ring beam, the inclined precast pile is welded in the reinforcing bars of the top pressing ring beam, and the inclined precast pile and the cast-in-situ bored pile are arranged at an angle of 15-45 degrees.
2. The support-before-excavation bored pile and inclined precast pile enclosure according to claim 1, wherein the inclined precast pile is formed of at least one row of inclined precast piles.
3. The support-before-excavation bored pile and inclined precast pile enclosure according to claim 1, wherein the inclined precast pile intervals are arranged according to a confining pressure.
4. The support-before-excavation bored pile and inclined precast pile enclosure according to claim 1, wherein the connection fixation means that one end of the bored pile and the inclined precast pile is integrally cast in the coping ring beam.
5. The support-before-excavation bored pile and inclined precast pile enclosure according to claim 1, wherein the inclined precast pile and the bored pile are required to be staggered.
6. The support-before-excavation bored pile and inclined precast pile enclosure according to claim 1, wherein the inclined precast pile is implemented in an inclined high-pressure jet grouting pile or a single-shaft cement mixing pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022128439.6U CN214061638U (en) | 2020-09-25 | 2020-09-25 | Support-before-dig bored pile and inclined precast pile enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022128439.6U CN214061638U (en) | 2020-09-25 | 2020-09-25 | Support-before-dig bored pile and inclined precast pile enclosure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214061638U true CN214061638U (en) | 2021-08-27 |
Family
ID=77395072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022128439.6U Active CN214061638U (en) | 2020-09-25 | 2020-09-25 | Support-before-dig bored pile and inclined precast pile enclosure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214061638U (en) |
-
2020
- 2020-09-25 CN CN202022128439.6U patent/CN214061638U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231128 Address after: Room J815, 3rd Floor, No. 5358 Huyi Road, Jiading District, Shanghai, June 2018 Patentee after: Zhongji Engineering (Shanghai) Geotechnical Co.,Ltd. Address before: 201806 room j404, 3 / F, No. 5358, Huyi Road, Jiading District, Shanghai Patentee before: Shanghai City Land Construction Engineering Co.,Ltd. Patentee before: Shanghai chengdixiangjiang Data Technology Co.,Ltd. Patentee before: SHANGHAI CHENGDI ROCK-SOIL DESIGN Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240219 Address after: 201306 floor 2, No. 979, Yunhan Road, Lingang xinpian District, Pudong New Area, Shanghai Patentee after: Shanghai Teyu Technology Co.,Ltd. Country or region after: China Address before: Room J815, 3rd Floor, No. 5358 Huyi Road, Jiading District, Shanghai, June 2018 Patentee before: Zhongji Engineering (Shanghai) Geotechnical Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |