CN111576455A - Umbrella-shaped supporting structure for slope prevention and control and construction method - Google Patents
Umbrella-shaped supporting structure for slope prevention and control and construction method Download PDFInfo
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- CN111576455A CN111576455A CN202010578975.8A CN202010578975A CN111576455A CN 111576455 A CN111576455 A CN 111576455A CN 202010578975 A CN202010578975 A CN 202010578975A CN 111576455 A CN111576455 A CN 111576455A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses an umbrella-shaped supporting structure for slope prevention and control and a construction method thereof, wherein the umbrella-shaped supporting structure comprises a plurality of supporting units arranged at intervals and a soil retaining plate arranged between the adjacent supporting units; the supporting unit comprises vertical piles, toe beams and heel beams which are respectively and vertically rigidly connected to the two side faces of the vertical piles, inclined supporting beams rigidly connected between the toe beams and the vertical piles and inclined pulling beams rigidly connected between the heel beams and the vertical piles, and soil retaining plates are arranged between adjacent vertical piles, and included angles are formed between the inclined supporting beams and the vertical piles and between the inclined pulling beams and the vertical piles. The supporting unit can resist larger lateral loads of soil bodies, and is strong in deformation resistance, good in supporting effect, small in structural internal force, safe and economical.
Description
Technical Field
The invention relates to the technical field of slope prevention and control, in particular to an umbrella-shaped supporting structure for slope prevention and control and a construction method.
Background
Due to the requirement of engineering construction, a fill environment side slope is formed, and the side slope is necessary to be supported and treated. In the prior art, prevention and treatment are mainly performed by cantilever piles, anchor piles, double-row piles, supporting structures, gravity type and balance weight type retaining walls, cantilever type and arm protection type retaining walls and the like. However, the cantilever piles cannot resist larger lateral soil load, the deformation resistance is small, the height of the supporting and retaining side slope is limited, and the vertical pile embedded and fixed section is longer. Adopt anchor pile needs reliable ground anchor body, in order to avoid filling out the dead weight subsides to produce unfavorable additional pulling force to the anchor rope simultaneously, need protect in advance the anchor rope, and the anchor rope construction can cause the harm of peripheral building and constructing. The double-row piles occupy larger space, the pile bottom settlement of the front piles is controlled more tightly, the pile top connecting beam is larger in size, and the soil counter-force between the front and rear rows of piles is difficult to determine. The use of a supporting structure requires a separate and reliable diagonal bracing base. The gravity type and balance weight type retaining wall masonry construction is large in size, foundation excavation amount is large, and a foundation pit needs temporary supporting treatment; the height of the cantilever type and arm protection type retaining wall is limited.
Disclosure of Invention
The invention aims to provide an umbrella-shaped supporting structure for slope prevention and control and a construction method, and aims to solve the problem that the conventional supporting structure cannot completely meet the requirements of slope support.
The technical scheme for solving the technical problems is as follows: an umbrella-shaped supporting structure for slope prevention and control comprises a plurality of supporting units arranged at intervals and a soil blocking plate arranged between the adjacent supporting units;
the supporting unit comprises vertical piles, toe beams and heel beams which are respectively and vertically rigidly connected to the two side faces of the vertical piles, inclined supporting beams rigidly connected between the toe beams and the vertical piles and inclined pulling beams rigidly connected between the heel beams and the vertical piles, and soil retaining plates are arranged between adjacent vertical piles, and included angles are formed between the inclined supporting beams and the vertical piles and between the inclined pulling beams and the vertical piles.
Furthermore, the vertical piles comprise exposure sections and embedding sections, the exposure sections are positioned above the toe beams and the heel beams, the embedding sections are positioned below the toe beams and the heel beams, and the soil retaining plates are arranged between the exposure sections of the adjacent vertical piles;
the inclined bracing beam is rigidly connected between the toe beam and the exposure section, and the inclined bracing beam is rigidly connected between the heel beam and the exposure section.
Furthermore, the included angles between the vertical piles and the inclined supporting beams and between the vertical piles and the inclined pulling beams are both 30-45 degrees.
Further, the distance between adjacent vertical piles is 3 to 5 times of the pile diameter of the vertical piles.
Furthermore, the inclined supporting beam and the inclined pulling beam are arranged to be single-channel or multi-channel.
Further, the vertical piles, the toe beams, the heel beams, the inclined supporting beams, the inclined pulling beams and the soil retaining plates are all of reinforced concrete structures.
The invention also provides a construction method of the umbrella-shaped supporting structure for slope prevention and control, which comprises the following steps:
the method comprises the following steps: manually digging or mechanically drilling a hole on the ground with the pile, and constructing a vertical pile in the hole;
step two: binding toe beam reinforcing steel bars and heel beam reinforcing steel bars at the position, exposed out of the ground, of the vertical pile;
step three: constructing an exposed section of the vertical pile, and constructing the exposed section to a joint of the inclined strut beam and the inclined strut beam;
step IV: constructing an inclined supporting beam, enabling two ends of the inclined supporting beam to be respectively and rigidly connected with the toe beam and the vertical pile, and pouring toe beam concrete;
step five: constructing an inclined draw beam, enabling two ends of the inclined draw beam to be respectively and rigidly connected with the heel beam and the vertical pile, and pouring heel beam concrete;
step (c): continuously constructing the exposed section of the vertical pile until the pile top;
step (c): and constructing a soil retaining plate between exposed sections of adjacent vertical piles, and compacting, backfilling and filling soil to the top of the slope after the vertical piles are piled in layers.
Further, in the step I, when the vertical piles are constructed, the top ends of the vertical piles extend out of the ground, wherein the vertical piles extend out of the ground to form exposed sections, and the vertical piles extend out of the ground to form embedded sections.
And furthermore, a plurality of inclined supporting beams are constructed in the step (IV).
Furthermore, a plurality of inclined tension beams are applied in the fifth step.
The invention has the following beneficial effects: the invention provides an umbrella-shaped supporting structure for slope prevention and control and a construction method, wherein the umbrella-shaped supporting structure comprises the following components:
(1) a toe beam is added near the ground of the bottom of the front slope of the vertical pile, and a heel beam is added behind the pile; the dead weight of the soil filled on the heel beam can resist the moment generated by the lateral load of partial soil to the top moment of the embedded section; the foundation reaction force acting on the toe beam can resist the moment generated by the lateral load of partial soil body to the moment of the top of the embedded section; the lateral load of the soil body borne by the vertical piles is reduced, the deformation resistance of the structure can be improved, and the side slope is effectively supported.
(2) The inclined supporting beam before the pile is arranged, the bottom end of the inclined supporting beam is bent, pulled and sheared by the toe beam to provide a supporting support, the top end supports the vertical pile, and the inclined supporting beam is pressed to reduce the outward overturn of the vertical pile; the pile rear inclined pull beam is arranged, the bottom end of the pile rear inclined pull beam is bent, pressed and sheared by the heel beam to provide anchoring, the top end of the pile rear inclined pull beam pulls the vertical pile, the inclined pull beam is pulled, and the vertical pile is prevented from overturning outwards; the supporting structure is more reasonable in stress and stronger in deformation resistance.
(3) Compared with the cantilever pile, the supporting structure can reduce the deformation of the pile top by about 30 percent, and the maximum bending moment of the vertical pile is reduced by about 30 percent, so that the pile diameter and the depth of the embedded section are reduced, the manufacturing cost is saved, and the height of the supported side slope is higher; compared with the anchor cable pile, the inclined pull beam does not need a rock-soil anchoring body and is directly connected with the heel beam, so that the advantage is displayed in the unreliable anchoring section or the deeper anchoring section of the anchor cable, and the problems that filling generates unfavorable additional tension on the transverse extrusion of the anchor cable and the damage to the peripheral construction caused by the construction of the anchor cable are avoided; compared with double-row piles, the double-row pile has the advantages that the occupied space is smaller, and large-size pile top connecting beams are not needed; compared with a supporting structure, the inclined bracing beam and the heel beam are added, so that the stress is more reasonable, the deformation resistance is stronger, and an additional inclined bracing beam foundation is not needed; compared with gravity type and balance weight type retaining walls, the structure has smaller volume, does not need to excavate and process a foundation temporary foundation pit, and has stronger anti-sliding and anti-overturning capabilities; compared with cantilever type and arm protection type retaining walls, the retaining wall is higher in height.
Drawings
FIG. 1 is a schematic structural view of the present invention;
figure 2 is a side view of the support unit of the present invention;
the reference numerals shown in fig. 1 to 2 are respectively expressed as: 1-supporting unit, 2-retaining plate, 10-vertical pile, 11-toe beam, 12-heel beam, 13-diagonal beam, 14-diagonal beam, 101-exposed section and 102-embedded section.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 2, an umbrella-type supporting structure for slope prevention includes a plurality of supporting units 1 arranged at intervals and a soil guard plate 2 arranged between adjacent supporting units 1. The supporting unit 1 can resist larger lateral loads of soil bodies, has strong deformation resistance and small internal force of the structure, and is safe and economical.
The supporting unit 1 comprises vertical piles 10, toe beams 11 and heel beams 12 which are respectively and vertically and rigidly connected to the two side faces of the vertical piles 10, inclined supporting beams 13 and inclined pulling beams 14, wherein the inclined pulling beams are rigidly connected between the heel beams 12 and the vertical piles 10, the inclined pulling beams are rigidly connected between the toe beams 11 and the vertical piles 10, the soil retaining plates 2 are arranged between the vertical piles 10, and included angles are formed between the inclined supporting beams 13 and the vertical piles 10 and between the inclined pulling beams 14 and the vertical piles 10.
A toe beam 11 is added near the bottom ground of the front slope of the vertical pile 10, a heel beam 12 is added behind the pile, and the dead weight of the filled soil acting on the heel beam 12 can resist the moment generated by the side load of part of soil to the moment at the top of the embedded section 102. The foundation reaction force acting on the toe beam 11 can resist the moment generated by the side load of partial soil body to the moment of the top of the embedded section 102. Through the arrangement of the pile front inclined supporting beam 13, the bottom end of the pile front inclined supporting beam is bent, pulled and sheared by the toe beam 11 to provide supporting support, the top end supports the vertical pile 10, and the inclined supporting beam 13 is pressed, so that the vertical pile 10 is prevented from overturning outwards. By providing the post-pile diagonal tension beam 14, the bottom end of which is bent, pressed and sheared against the beam 12 to provide anchoring, and the top end pulls the vertical pile 10, the diagonal tension beam 14 is pulled, and at the same time, the vertical pile 10 is reduced from toppling outwards.
The vertical pile 10 comprises an exposure section 101 and an embedding section 102, the exposure section 101 and the embedding section 102 form an integrated structure of the vertical pile 10, the exposure section 101 is located above the toe beam 11 and the heel beam 12, the embedding section 102 is located below the toe beam 11 and the heel beam 12, the soil retaining plate 2 is arranged between the exposure sections 101 of the adjacent vertical piles 10, and the soil retaining plate 2 supports the soil retaining effect. The inclined bracing beam 13 is rigidly connected between the toe beam 11 and the exposure segment 101, and the inclined bracing beam 14 is rigidly connected between the heel beam 12 and the exposure segment 101.
The included angles between the clamp between the vertical pile 10 and the inclined supporting beam 13 and between the vertical pile 10 and the inclined pulling beam 14 are both 30-45 degrees. The inclined supporting beam 13 and the inclined pulling beam 14 are both arranged in an inclined mode, and the respective stress strength of the inclined supporting beam and the inclined pulling beam within the range of the inclined angle is effectively guaranteed through limitation of the inclined angle.
In the invention, the distance between the adjacent vertical piles 10 is 3 to 5 times of the pile diameter of the vertical pile 10.
In order to meet the slope prevention and control under different working conditions, the inclined supporting beams 13 and the inclined pulling beams 14 are arranged to be single-channel or multi-channel. By arranging the single or multiple inclined supporting beams 13 and the inclined pulling beams 14, the flexural strength, the tensile strength and the shear strength are effectively improved, the applicable reliability of the supporting structure is improved,
the vertical piles 10, the toe beams 11, the heel beams 12, the raker beams 13, the raker beams 14 and the soil guard plates 2 are all of reinforced concrete structures. Adopt reinforced concrete structure, it is convenient to draw materials, and construction convenience is reliable, and structural strength is high.
The invention also provides a construction method of the umbrella-shaped supporting structure for slope prevention and control, which comprises the following steps:
the method comprises the following steps: a hole is manually dug or mechanically drilled in the piled ground and a vertical pile 10 is constructed in the hole. When the vertical pile 10 is constructed, the top end of the vertical pile 10 extends out of the ground, wherein the part, extending out of the ground, of the vertical pile 10 is an exposed section 101, and the part, located in a rock-soil layer, of the vertical pile 10 is an embedded section 102.
Step two: binding toe beam 11 steel bars and heel beam 12 steel bars at the position of the vertical pile 10 exposed out of the ground;
step three: and constructing an exposed section 101 of the vertical pile 10, and constructing the exposed section 101 to the joint of the raker beam 13 and the raker beam 14.
Step IV: constructing an inclined supporting beam 13, rigidly connecting two ends of the inclined supporting beam 13 with the toe beam 11 and the vertical pile 10 respectively, and pouring concrete of the toe beam 11; and constructing a single channel or a plurality of channels of inclined supporting beams 13 according to different working condition requirements.
Step five: constructing an inclined draw beam 14, enabling two ends of the inclined draw beam 14 to be respectively and rigidly connected with the heel beam 12 and the vertical pile 10, and pouring heel beam 12 concrete; and constructing a single-channel or multi-channel diagonal draw beam 14 according to different working condition requirements.
Step (c): continuously constructing the exposed section 101 of the vertical pile 10 until the pile top;
step (c): and constructing a soil retaining plate 2 between exposed sections 101 of adjacent vertical piles 10, and compacting, backfilling and filling soil to the top of the side slope layer by layer after the vertical piles 10 are piled.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An umbrella-shaped supporting structure for slope prevention and control is characterized by comprising a plurality of supporting units (1) arranged at intervals and retaining plates (2) arranged between the adjacent supporting units (1);
support unit (1) including vertical stake (10), perpendicular rigid connection respectively toe roof beam (11) and heel roof beam (12), rigid connection on vertical stake (10) both sides face toe roof beam (11) with bracing roof beam (13) and rigid connection between vertical stake (10) heel roof beam (12) with oblique straining beam (14) between vertical stake (10), it is adjacent that fender soil board (2) set up between vertical stake (10), bracing roof beam (13) with between vertical stake (10) and oblique straining beam (14) with all have the contained angle between vertical stake (10).
2. The umbrella-type supporting structure for slope control according to claim 1, characterized in that the vertical piles (10) comprise an exposure section (101) and an embedment section (102), the exposure section (101) being located above the toe beam (11) and the heel beam (12), the embedment section (102) being located below the toe beam (11) and the heel beam (12), the soil guard plate (2) being disposed between the exposure sections (101) of adjacent vertical piles (10);
the raker beam (13) is rigidly connected between the toe beam (11) and the exposure section (101), and the raker beam (14) is rigidly connected between the heel beam (12) and the exposure section (101).
3. The umbrella-type supporting structure for slope control according to claim 1, characterized in that the included angles between the clamps between the vertical piles (10) and the raker beams (13) and between the vertical piles (10) and the raker beams (14) are each 30-45 °.
4. The umbrella-type supporting structure for slope control according to any one of claims 1 to 3, characterized in that the distance between adjacent vertical piles (10) is 3 to 5 times the pile diameter of the vertical piles (10).
5. The umbrella-type support structure for slope control according to claim 4, wherein the raker beams (13) and the diagonal tension beams (14) are provided in a single lane or multiple lanes.
6. The umbrella-type supporting structure for slope prevention according to claim 4, wherein the vertical piles (10), toe beams (11), heel beams (12), raker beams (13), diagonal draw beams (14) and retaining plates (2) are all of reinforced concrete structures.
7. The construction method of an umbrella-type supporting structure for slope prevention and control according to any one of claims 1 to 6, characterized by comprising the steps of:
the method comprises the following steps: manually digging or mechanically drilling a hole on the ground with the pile, and constructing a vertical pile (10) in the hole;
step two: binding toe beam (11) reinforcing steel bars and heel beam (12) reinforcing steel bars at the position of the vertical pile (10) exposed out of the ground;
step three: constructing an exposed section (101) of the vertical pile (10), and constructing the exposed section (101) to the connection part of the inclined supporting beam (13) and the inclined pulling beam (14);
step IV: constructing an inclined supporting beam (13), rigidly connecting two ends of the inclined supporting beam (13) with the toe beam (11) and the vertical pile (10) respectively, and pouring concrete of the toe beam (11);
step five: constructing an inclined draw beam (14), enabling two ends of the inclined draw beam (14) to be respectively and rigidly connected with the heel beam (12) and the vertical pile (10), and pouring concrete of the heel beam (12);
step (c): continuously constructing the exposed section (101) of the vertical pile (10) until the pile top;
step (c): constructing soil retaining plates (2) between exposed sections (101) of adjacent vertical piles (10), and compacting, backfilling and filling soil to the top of the side slope layer by layer after the vertical piles (10) are piled.
8. The construction method of the umbrella-shaped supporting structure for slope prevention and control according to claim 7, characterized in that in the step (r), when the vertical piles (10) are constructed, the top ends of the vertical piles (10) are made to extend out of the ground, wherein the vertical piles (10) extend out of the ground to form exposed sections (101), and the vertical piles (10) are arranged in rock-soil layers to form embedded sections (102).
9. The construction method of an umbrella-type supporting structure for slope prevention according to claim 7, characterized in that, in the step (r), a single or multiple raker beams (13) are applied.
10. The construction method of an umbrella-type supporting structure for slope prevention according to claim 7, characterized in that a single or multiple diagonal tension beams (14) are applied in the fifth step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578975.8A CN111576455A (en) | 2020-06-23 | 2020-06-23 | Umbrella-shaped supporting structure for slope prevention and control and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010578975.8A CN111576455A (en) | 2020-06-23 | 2020-06-23 | Umbrella-shaped supporting structure for slope prevention and control and construction method |
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| CN111576455A true CN111576455A (en) | 2020-08-25 |
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| CN202010578975.8A Pending CN111576455A (en) | 2020-06-23 | 2020-06-23 | Umbrella-shaped supporting structure for slope prevention and control and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160328A (en) * | 2020-09-28 | 2021-01-01 | 济南市市政工程设计研究院（集团）有限责任公司 | Foundation pit supporting structure and method |
-
2020
- 2020-06-23 CN CN202010578975.8A patent/CN111576455A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160328A (en) * | 2020-09-28 | 2021-01-01 | 济南市市政工程设计研究院（集团）有限责任公司 | Foundation pit supporting structure and method |
| CN112160328B (en) * | 2020-09-28 | 2022-03-25 | 济南市市政工程设计研究院（集团）有限责任公司 | Foundation pit supporting structure and method |
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