CN210288428U - Combined supporting structure - Google Patents
Combined supporting structure Download PDFInfo
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- CN210288428U CN210288428U CN201921151929.9U CN201921151929U CN210288428U CN 210288428 U CN210288428 U CN 210288428U CN 201921151929 U CN201921151929 U CN 201921151929U CN 210288428 U CN210288428 U CN 210288428U
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- piles
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- continuous wall
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- 239000002689 soil Substances 0.000 claims abstract description 46
- 239000004568 cement Substances 0.000 claims abstract description 34
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 claims abstract description 10
- 239000004927 clay Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 230000002787 reinforcement Effects 0.000 description 13
- 238000009424 underpinning Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model relates to a civil engineering technical field discloses a modular supporting construction, including reinforced concrete single row pile or double row pile, the reinforced cement soil underground continuous wall that the slope set up, there is vertical pile bolck crown beam to connect between the pile bolck of the same adjacent stake of row of single row pile or double row pile, connects through horizontal pile bolck crown beam on the front row pile of double row pile and the back row pile between the adjacent stake, and reinforced body top in the reinforced cement soil underground continuous wall meets with the pile bolck crown beam of reinforced concrete single row pile or double row pile. The reinforced continuous wall is continuous, has a large self weight, large contact area between the side surface and the soil layer and large friction resistance, has the pulling resistance bearing capacity far higher than that of a common anchor rod, can well control the deformation of a foundation pit, has good stability and strong supporting capacity, and is particularly suitable for water-rich narrow poor stratum fields.
Description
Technical Field
The utility model relates to a civil engineering technical field specifically, relates to a modular supporting construction.
Background
The existing pile-anchor supporting technology has the defects of being limited by the field, soil layer properties and the like, and the patent application with the publication number of CN 201665872U-reinforced cement soil anchor pile supporting structure provides a supporting structure, the supporting structure consists of a steel cement soil pile and a rotary spraying stirring pile which is obliquely arranged, under the condition that only one oblique rotary spraying stirring pile is vertically arranged, the soil retaining capacity of the supporting structure is very limited, and meanwhile, the supporting structure does not have the water stopping function.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in overcoming prior art's defect, to weak soil, plain fill out the narrow place foundation ditch of the poor rich water of soil property such as soil property, provide one kind and collect and keep off soil, stagnant water and anchor and draw, underpin and hole plus solid in the combined supporting structure of an organic whole.
The utility model discloses the purpose is realized through following technical scheme:
a combined supporting structure comprises reinforced concrete single-row piles or double-row piles and a reinforced cement underground continuous wall which is obliquely arranged, wherein longitudinal pile top crown beams are connected between pile tops of adjacent piles on the same row face of the single-row piles or the double-row piles, adjacent piles on front-row piles and rear-row piles of the double-row piles are connected through transverse pile top crown beams, and the top ends of reinforced bodies in the reinforced cement underground continuous wall are connected with the pile top crown beams of the reinforced concrete single-row piles or the double-row piles.
Further, the longitudinal distance between the piles in the single-row pile is less than or equal to 2 times of the diameter of the piles, the width of the longitudinal pile top crown beam is greater than or equal to the diameter of the piles, and the height of the longitudinal pile top crown beam is greater than or equal to 0.6 time of the width of the longitudinal pile top crown beam.
Further, the longitudinal distance between the piles in the double-row piles is less than or equal to 2 times of the diameter of the piles, the transverse distance between the row surfaces of the double-row piles is 3-5 times of the diameter of the piles, the width of the pile top crown beam is greater than or equal to the diameter of the piles, and the height of the pile top crown beam is greater than or equal to 0.6 time of the width of the pile top crown beam.
Further, the included angle between the reinforced cement soil underground continuous wall and the horizontal plane is 50-70 degrees.
Furthermore, at least one anchor plate is arranged at the tail end of the reinforcement body of the reinforced cement soil underground continuous wall.
And furthermore, a plurality of anchor plates are connected with one another to form a series-type anchor plate.
Still further, the spacing between adjacent anchor plates is greater than 4 times the diameter or width dimension of the anchor plates themselves.
Further, the length of the reinforced cement soil underground continuous wall is larger than or equal to 1.0-1.5 times of the depth of the foundation pit.
Further, the length of the reinforced cement soil underground continuous wall entering the impermeable clay layer is more than or equal to 0.5 m.
Furthermore, the front row of piles and the rear row of piles of the double-row piles are arranged in a rectangular or quincunx array.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) the reinforced continuous wall is continuous and has a large self weight, the contact area of the side surface and the soil layer is large, the friction resistance is large, the uplift bearing capacity of the reinforced continuous wall is far higher than that of a common anchor rod, the deformation of a foundation pit can be well controlled, the stability is good, the supporting capability is strong, and the reinforced continuous wall is particularly suitable for water-rich narrow poor stratum fields;
2) the reinforced continuous wall and the soil layer form a large inclination angle and can be used as an excellent waterproof curtain;
3) the soil retaining, water stopping and anchoring, isolating and underpinning and pit external fixing are integrated, the construction is simple and convenient, and the influence of the excavation of the foundation pit on the surrounding environment can be effectively reduced;
4) the reinforced continuous wall improves the shearing resistance on the sliding surface which is possibly generated on one hand, and has a reinforcing effect on the soil outside the pit on the other hand, so that the uplift resistance stability of the foundation pit is enhanced.
Drawings
Fig. 1 is a schematic structural view of a combined supporting structure according to example 1;
FIG. 2 is a top cross-sectional view of the single row of piles of FIG. 1;
fig. 3 is a schematic structural view of the combined supporting structure according to embodiment 2;
FIG. 4 is a top cross-sectional view of the double row of piles of FIG. 3;
fig. 5 is a schematic structural view of the combined supporting structure according to embodiment 3;
fig. 6 is a top cross-sectional view of the double row of piles of fig. 5.
Detailed Description
The invention will be further described with reference to specific embodiments, wherein the drawings are designed solely for the purpose of illustration and not as a definition of the limits of the patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 and 2, a combined supporting structure is provided, which is a single-row pile-inclined reinforced cement soil underground continuous wall anchor body combination, and comprises reinforced concrete piles 1, reinforced concrete longitudinal pile top crown beams 2 connected between adjacent pile tops, and an inclined reinforced cement soil underground continuous wall 3 connected with the longitudinal pile top crown beams 2.
The elevation of the top of the longitudinal pile top crown beam 2 is the same as the elevation of the ground 4 or lower than the elevation of the ground 4, the longitudinal distance of the reinforced concrete piles 1 is less than or equal to 2 times of the diameter of the piles, the width of the longitudinal pile top crown beam is greater than or equal to the diameter of the piles, and the height of the longitudinal pile top crown beam is greater than or equal to 0.6 time of the width of the longitudinal pile top crown beam.
The reinforced cement soil underground continuous wall 3 can be formed by adopting high-pressure jet grouting piles, cement soil mixing piles or grouting cement soil piles and the like, the diameter of each pile is designed to be 350-800 mm, the strength of cement soil is not lower than 0.8MPa, the engagement width of adjacent piles is not smaller than 150mm in the forming process, and the engagement thickness is 600-1500 mm.
The reinforcement body 31 of the reinforced cement soil underground continuous wall is connected with the pile top longitudinal crown beam 2, specifically, a hole needs to be reserved on the reinforced concrete longitudinal pile top crown beam 2 when the reinforced concrete longitudinal pile top crown beam 2 is poured, the reinforcement body 31 in the reinforced cement soil underground continuous wall is anchored on the longitudinal pile top crown beam 2 through an anchorage device 5 after penetrating through the hole, and a wedge-shaped cushion block 6 is arranged below the anchorage device 5.
The embedding depth of the reinforced concrete pile 1 below the pit bottom 7 of the foundation pit is not less than 0.3 time of the depth of the foundation pit.
The included angle between the reinforced cement soil underground continuous wall 3 and the horizontal direction is 50-70 degrees, and the reinforced cement soil underground continuous wall 3 integrates soil retaining, water stopping and anchoring, underpinning and pit external fixing, and is particularly suitable for water-rich narrow poor stratum fields.
The reinforcement 31 of the reinforced cement soil underground continuous wall is a deformed steel bar or a prestressed steel strand, prestress can be applied to the reinforcement, the prestress can be 0.5-0.8 times of the designed value of the axial tension, the reinforcement amount meets the requirement of the uplift resistance, calculation and determination are carried out according to specific conditions, and the uplift resistance test is carried out if necessary.
In order to prevent the bonding strength between the reinforcement 31 and the cement from failing to meet the requirement of the uplift resistance, at least one anchor plate 32 may be disposed at the end of the reinforcement 31.
In order to improve the uplift bearing capacity of the reinforcement body 31, a plurality of anchor plates 32 can be arranged on each reinforcement body and connected to form a serial anchor plate, the distance between the serial anchor plates is larger than 4 times of the diameter or width size of each anchor plate, and the cross section of each anchor plate 32 can be circular or rectangular.
The length of the reinforced cement soil underground continuous wall 3 is more than or equal to 1.0-1.5 times of the depth of the foundation pit, and the length of the cement soil underground continuous wall entering the impervious clay layer is more than or equal to 0.5 m.
The inclined span length of the reinforced cement soil underground continuous wall is more than or equal to 1.0-1.5 times of the depth of the foundation pit, the depth of the reinforced cement soil underground continuous wall below the buried soil layer needs to enter the impermeable clay layer, and the length of the reinforced cement soil underground continuous wall entering the impermeable clay layer is more than or equal to 0.5 m.
The combined supporting structure integrates soil retaining, water stopping and anchoring, isolation and underpinning, and pit external fixing, has simple and convenient construction, can effectively reduce the influence of foundation pit excavation on the surrounding environment, and particularly, has the functions of soil retaining and water stopping as well as anchor rod functions because the reinforced cement soil underground continuous wall can realize integrated construction and simplify the construction process; and secondly, the reinforced continuous wall has the functions of isolating piles, underpinning the foundation of a building (structure) on the periphery, obliquely supporting the soil outside the reinforced continuous wall and shielding the reinforced concrete piles, so that the pressure of the soil acting on the reinforced concrete piles is reduced, the deformation of the natural reinforced concrete piles and the internal force of pile bodies are reduced, and the influence of foundation pit excavation on the surrounding environment is reduced.
The uplift resistance stability of the foundation pit bottom of the reinforced concrete cantilever pile supporting structure is strong, the shearing resistance on a possibly-occurring sliding surface is improved by the reinforced continuous wall, and the reinforcement effect on a soil body outside the foundation pit is realized, so that the uplift resistance stability of the foundation pit is enhanced.
Example 2
As shown in fig. 3, the difference between this embodiment and embodiment 1 is that the combined supporting structure is a double-row pile-oblique reinforced cement underground continuous wall anchor combination, in which the longitudinal distance between reinforced concrete piles 1 is less than or equal to 2 times of the diameter of the piles themselves, the transverse distance between the piles is 2 to 5 times of the diameter of the piles, a longitudinal pile top crown beam 21 (the same as embodiment 1) is connected between the pile tops of adjacent piles on the same row surface of the double-row piles, the front row piles and the rear row piles of the double-row piles are connected by a transverse pile top crown beam 22, the transverse and longitudinal pile top crown beams have widths not less than the diameter of the piles and heights not less than 0.6 times of the crown beam width, and the top end of the reinforced body in the reinforced cement underground continuous wall is connected with the pile top crown beams of the reinforced concrete double-row piles.
In the embodiment, the piles of the front row of piles 11 and the rear row of piles 12 are arranged in a plum blossom shape (see fig. 4), the front row of piles 11 and the rear row of piles 12 are connected through a reinforced concrete transverse pile top crown beam 22, a reinforced concrete longitudinal pile top crown beam 21 is arranged at the pile top of the front row of piles 11, a reinforced concrete longitudinal pile top crown beam 21 is also arranged at the pile top of the rear row of piles 12, and two ends of the transverse pile top crown beam 22 are respectively connected with the middle section of the longitudinal pile top crown beam 21 between the pile tops of the front row of piles 11 and the pile tops of the rear row of piles 12. The longitudinal pile top crown beam, the transverse pile top crown beam, the front row of piles and the rear row of piles are formed by pouring concrete, and a space structure with high rigidity is formed. The reinforcement body 31 is connected with the front row pile longitudinal pile top crown beam 21, and the rear row pile 12 penetrates through the reinforced cement underground continuous wall 3.
Example 3
As shown in fig. 5 and 6, the present embodiment differs from embodiment 2 in that: the piles of the front row of piles 11 and the rear row of piles 12 of the double-row piles are arranged in a rectangular shape, the reinforcement body 31 is connected with the longitudinal pile top crown beam 21 of the rear row of piles, and two ends of the transverse pile top crown beam 22 are respectively connected with the pile tops of the front row of piles 11 and the pile tops of the rear row of piles 12.
It should be understood that the above-mentioned embodiments are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A combined supporting structure is characterized by comprising reinforced concrete single-row piles or double-row piles and a reinforced cement underground continuous wall which is obliquely arranged, wherein pile tops of adjacent piles in the same row of the single-row piles or the double-row piles are connected through longitudinal pile top crown beams, adjacent piles on front rows of the double-row piles and adjacent piles on rear rows of the double-row piles are connected through transverse pile top crown beams, and the top ends of reinforced bodies in the reinforced cement underground continuous wall are connected with the pile top crown beams of the reinforced concrete single-row piles or the double-row piles.
2. The combined supporting structure of claim 1, wherein the longitudinal distance between piles in a single row of piles is less than or equal to 2 times the diameter of the piles, the width of the longitudinal pile top crown beam is greater than or equal to the diameter of the piles, and the height of the longitudinal pile top crown beam is greater than or equal to 0.6 times the width of the longitudinal pile top crown beam.
3. The combined supporting structure according to claim 1, wherein the longitudinal distance between piles in the double rows of piles is less than or equal to 2 times of the diameter of the piles, the transverse distance between the row surfaces of the double rows of piles is 3-5 times of the diameter of the piles, the width of the pile top crown beam is greater than or equal to the diameter of the piles, and the height of the pile top crown beam is greater than or equal to 0.6 times of the width of the pile top crown beam.
4. The combined supporting structure according to any one of claims 1 to 3, wherein an included angle between the reinforced cement-soil underground continuous wall and the horizontal plane is 50-70 degrees.
5. The modular supporting construction of claim 4, wherein the reinforced body of the reinforced cement-soil underground continuous wall is provided at its end with at least one anchor plate.
6. The modular supporting construction of claim 5 wherein a plurality of anchor panels are interconnected to form a tandem anchor panel.
7. The modular supporting construction of claim 6 wherein the spacing between adjacent anchor plates is greater than 4 times the diameter or width dimension of the anchor plates themselves.
8. The combined supporting structure of claim 4, wherein the length of the reinforced cement-soil underground continuous wall is greater than or equal to 1.0-1.5 times of the depth of the foundation pit.
9. The combined supporting structure of claim 1, wherein the length of the reinforced soil-cement underground continuous wall entering the watertight clay layer is greater than or equal to 0.5 m.
10. A modular supporting construction as claimed in claim 1, in which the front and rear rows of piles of the twin rows are arranged in a rectangular or quincunx array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921151929.9U CN210288428U (en) | 2019-07-22 | 2019-07-22 | Combined supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921151929.9U CN210288428U (en) | 2019-07-22 | 2019-07-22 | Combined supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210288428U true CN210288428U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921151929.9U Expired - Fee Related CN210288428U (en) | 2019-07-22 | 2019-07-22 | Combined supporting structure |
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| CN (1) | CN210288428U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575331A (en) * | 2022-01-19 | 2022-06-03 | 中天建设集团有限公司 | Prestressed special-shaped underground continuous wall and construction method thereof |
| CN115233689A (en) * | 2022-07-04 | 2022-10-25 | 浙江工业大学 | Combined type enclosure structure for soft soil foundation pit and construction method thereof |
-
2019
- 2019-07-22 CN CN201921151929.9U patent/CN210288428U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575331A (en) * | 2022-01-19 | 2022-06-03 | 中天建设集团有限公司 | Prestressed special-shaped underground continuous wall and construction method thereof |
| CN114575331B (en) * | 2022-01-19 | 2024-03-15 | 中天建设集团有限公司 | Prestress special-shaped underground diaphragm wall and construction method thereof |
| CN115233689A (en) * | 2022-07-04 | 2022-10-25 | 浙江工业大学 | Combined type enclosure structure for soft soil foundation pit and construction method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |