CN114892712A - Construction method of micro-disturbance assembled soil retaining structure - Google Patents
Construction method of micro-disturbance assembled soil retaining structure Download PDFInfo
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- CN114892712A CN114892712A CN202210711371.5A CN202210711371A CN114892712A CN 114892712 A CN114892712 A CN 114892712A CN 202210711371 A CN202210711371 A CN 202210711371A CN 114892712 A CN114892712 A CN 114892712A
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- baffle
- piles
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- disturbance
- micro
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- 238000010276 construction Methods 0.000 title claims abstract description 50
- 239000002689 soil Substances 0.000 title claims abstract description 42
- 230000003068 static effect Effects 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims description 8
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0266—Retaining or protecting walls characterised by constructional features made up of preformed elements
-
- 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
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a construction method of a micro-disturbance assembled soil retaining structure, wherein double rows of piles are constructed in a construction site along the extending direction of a soil retaining surface, and pile bodies of the double rows of piles are arranged at intervals along the vertical direction of the soil retaining surface, so that vertical grooves are reserved between the double rows of piles; constructing a rigid frame beam on the top of the double-row piles, wherein the rigid frame beam connects the double-row piles to form a whole; a jack is arranged at the bottom of the rigid frame beam, is inverted and corresponds to the vertical groove; and placing a baffle in the vertical groove, and embedding the baffle into a soil layer through the jack in a static pressure manner. The invention has the advantages that: the form of combining double rows of piles with the prefabricated baffle is adopted, the double rows of piles are high in rigidity and strong in deformation resistance, and as a support of the prefabricated baffle, a force transmission path of a structural system is clear, and the whole structure has good economy; the construction site mainly carries out pile foundation construction and baffle static pressure operation, does not relate to a large amount of earthwork excavation backfill, has little influence on the environment and has the characteristic of micro-disturbance.
Description
Technical Field
The invention relates to the technical field of soil retaining structures, in particular to a construction method of a micro-disturbance assembled soil retaining structure.
Background
The soil retaining structure is one kind of structure for supporting and reinforcing soil filling or slope soil to prevent collapse and slide for maintaining stability. Along with the development and construction of cities, retaining structures which are close to existing buildings or lack in land are increasingly increased, and the applicability of the traditional cantilever or counterfort retaining wall is limited due to the large temporary floor area for construction, large excavation and backfilling engineering quantity, low effective retaining height and the like; the supporting height of the pile plate type retaining wall is improved, but the applicability of the pile plate type retaining wall is greatly limited due to the problems that the pile foundation construction has higher requirements on construction machines and construction space, the construction period is long, the construction cost is high and the like.
In the prior art, there is a frame-type double-row sheet pile retaining structure, including a multi-row sheet pile structure and a linking beam, where both ends of the linking beam respectively fix the linking sheet pile structure and a spacer sheet pile structure, so that the linking sheet pile structure and the spacer sheet pile structure can mutually support the multi-row sheet pile structure including a linking sheet pile structure and a spacer sheet pile structure that are alternately arranged along a width direction of a river bank, the linking sheet pile structure and the spacer sheet pile structure include a linking sheet pile and a first crown beam, where a plurality of linking sheet piles are continuously arranged along a length direction of the river bank, the pile head spacer pile structure that the first crown beam fixes all the linking sheet piles includes a spacer sheet pile and a second crown beam, where a plurality of spacer sheet piles are arranged at intervals along the length direction of the river bank, and the pile head of all the spacer sheet piles is fixed by the second crown beam.
However, the above structure is difficult to implement under the condition that the construction space is limited, and the soil needs to be dug and filled in a large range, so that the environmental impact is large, and the structure is mainly a cast-in-place structure, so that the construction period is long.
Disclosure of Invention
The invention aims to provide a construction method of a micro-disturbance assembled soil retaining structure according to the defects of the prior art, wherein baffles are constructed between double rows of piles in a static pressure mode, so that the construction of the soil retaining structure is realized, the disturbance is reduced, and the construction space is saved.
The purpose of the invention is realized by the following technical scheme:
a construction method of a micro-disturbance assembled soil retaining structure is characterized in that: the method comprises the following steps:
constructing double rows of piles in a construction site along the extending direction of a soil blocking surface, wherein pile bodies of the double rows of piles are arranged at intervals along the vertical direction of the soil blocking surface, and vertical grooves are reserved between the double rows of piles;
constructing a rigid frame beam on the top of the double-row piles, wherein the rigid frame beam connects the double-row piles to form a whole;
a jack is arranged at the bottom of the rigid frame beam, is inverted and corresponds to the vertical groove
And placing a baffle in the vertical groove, and embedding the baffle into a soil layer through the jack in a static pressure manner.
Two or more than two sets of double row piles are under construction to the plate body extending direction of the baffle, and the double row piles of each set are arranged at intervals, and the baffle is limited between the double row piles of each set.
And a plurality of baffles are statically pressed one by one in the vertical groove through the jack, and the baffles are combined to support and block the soil blocking surface.
The bottom of the static pressure first baffle is provided with a wedge angle or a conical tip.
And a steel blade foot is welded at the bottom of the baffle plate at the bottom.
And constructing the baffles along the extending direction of the soil blocking surface, wherein the adjacent baffles form a continuous structure, and each baffle is arranged between the corresponding double rows of piles.
The double-row piles and the rigid frame beam are of cast-in-place reinforced concrete structures, and the baffle is of a prefabricated reinforced concrete structure.
And a through water drainage hole is reserved on the baffle.
The invention has the advantages that:
1) the form of combining double rows of piles with the prefabricated baffle is adopted, the double rows of piles are high in rigidity and strong in deformation resistance, and as a support of the prefabricated baffle, a force transmission path of a structural system is clear, and the whole structure has good economy;
2) the double-row piles can be arranged at the outer side of the construction space limited area, and the static pressure device is adopted to construct the baffle in the space limited area, so that the double-row piles have applicability in various complex environments such as under a bridge and the like;
3) the prefabricated parts can be partially used, so that the mode of factory production and field installation and construction can be realized, the rapid and large-scale construction can be realized, and the construction period and the construction cost can be saved;
4) the construction site mainly carries out pile foundation construction and baffle static pressure operation, does not relate to a large amount of earthwork excavation backfill, has little influence on the environment and has the characteristic of micro-disturbance.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present invention;
FIG. 2 is a top view of the structure of the present invention;
FIG. 3 is an isometric view of the present invention;
fig. 4 is a schematic structural view of a bottom baffle plate in the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:
as shown in fig. 1-4, the labels 1-6 are respectively shown as: the pile foundation comprises a rigid frame beam 1, a jack 2, double-row piles 3, a baffle 4, a baffle 5 and steel blade feet 6.
Example (b): as shown in fig. 1 to 4, the slightly-disturbed fabricated soil retaining method of the present embodiment is a soil retaining structure consisting of rigid frame beams 1, double rows of piles 3 and retaining plates 4 (retaining plates 5) after being constructed. Wherein, double row pile 3 has two sets ofly along keeping off soil direction interval arrangement, reserves the clearance between every row of pile body and reserves vertical groove as the installation of later stage baffle. The tops of the double-row piles 3 are connected in a consolidation mode through the rigid frame beam 1 to form a stable frame.
Transversely arranged baffles are arranged in the reserved vertical grooves of the double-row piles 3, wherein the baffle 5 is a first baffle at the bottom, and a wedge-shaped angle is arranged below the first baffle, so that the double-row piles can be used in static pressure soil penetration in different wedge directions or in a cone tip shape; if the stratum is hard, a steel blade foot 6 can be welded at the bottom of the wedge-shaped angle, and the auxiliary baffle can enter the soil in a static pressure mode more smoothly, as shown in figure 4. Each of the remaining baffles above the baffle 5 is a generally rectangular baffle 4. The baffle 5 and a plurality of baffles 4 are sequentially embedded into the soil in a downward static pressure manner to form a complete retaining plate taking the double-row piles 3 at two ends as supports, so that the retaining function is realized.
In the embodiment, the static pressure construction of the baffle 4 and the baffle 5 is realized by arranging the jack 2 at the bottom of the rigid frame beam 1. Specifically, the jack 2 is inverted right above the reserved vertical groove for installing the baffle, and can utilize the double-row piles 3 and the rigid frame beam 1 as a counterforce device to press the baffle 4 (baffle 5) downwards.
In the construction of the embodiment, the construction method comprises the following construction steps:
1) and (4) leveling the field, specifically determining the positioning of the double-row piles 3, reserving the distance of the vertical grooves between the piles, and constructing a pile foundation.
2) And erecting a template, constructing a pile top rigid frame beam 1, and solidifying the tops of the double-row piles 3 to form an integral frame. The rigid frame beam 1 is used for connecting double-row piles 3, so that the double-row piles 3 are connected to form an integral frame with high strength.
3) When in-situ pile foundation construction and rigid frame beam construction, the baffle plates can be prefabricated in a factory and maintained to the designed strength.
4) Inverted jacks are arranged in vertical grooves between the double rows of piles 3 and at the bottoms of the rigid frame beams 1, baffle plates 5 provided with steel blade feet 6 are placed in the vertical grooves, and the baffle plates are pressed downwards into a soil layer through the force application of the jacks 2. In the static pressure process, the jacking strokes of the jacks 2 on the two sides are controlled to ensure that the baffle keeps horizontal static pressure, and meanwhile, after static pressure construction of one baffle is completed, the top surface of the baffle is cleaned, so that residue soil residue on a contact surface between the baffle and the baffle is avoided.
5) After the jack 2 returns, a baffle 4 is placed above the baffle 5, the jack 2 directly presses the baffle 4 downwards, and the baffle 4 and the baffle 5 continuously enter the soil layer downwards;
6) after the jack 2 returns, another baffle 4 is placed on the baffle 4, and the steps are repeated until the baffle 4 is fully distributed with the whole vertical groove from bottom to top to form a complete and continuous retaining plate with two ends supported on the double-row piles 3.
In the construction stage, double row pile 3 and rigid frame roof beam 1 can bear the uplift power under the effect of jack 2, and this uplift power can be born by double row pile 3, need carry out the check calculation to double row pile 3's resistance to plucking bearing capacity during the structural design, satisfy the requirement can, guarantee retaining structure's overall structure stable.
In the embodiment, in specific implementation: the rigid frame beam 1 and the double-row piles 3 are of cast-in-place reinforced concrete structures, and the baffles are of prefabricated reinforced concrete structures, so that the construction efficiency is effectively improved.
As shown in fig. 2 and 3, in the present embodiment, two sets of double-row piles 3 are provided along the extending direction of the plate body of the retaining plate (extending direction of the retaining surface), but in actual construction, in order to further improve the performance of the retaining structure, more than two sets of double-row piles 3 may be provided, and the double-row piles 3 are arranged at even intervals, so that the retaining plate can be limited between the double-row piles, thereby improving the retaining effect.
Similarly, this embodiment is provided with one jack 2 in the below of rigid frame roof beam 1, but when the plate body thickness of baffle is great, also can adopt two jacks 2 along baffle plate body thickness direction interval arrangement to carry out the static pressure to the baffle to guarantee the embedding effect of baffle.
Fig. 3 shows a retaining structure formed by a set of double row piles 3 and retaining plates, which are arranged in the extending direction of the retaining surface in actual construction, and are continuous to continuously support the retaining surface.
And a through water drainage hole is reserved on the baffle plate, so that the requirement of later-stage drainage is met.
Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, they are not to be considered repeated herein.
Claims (8)
1. A construction method of a micro-disturbance assembled soil retaining structure is characterized in that: the method comprises the following steps:
constructing double rows of piles in a construction site along the extending direction of a soil blocking surface, wherein pile bodies of the double rows of piles are arranged at intervals along the vertical direction of the soil blocking surface, and vertical grooves are reserved between the double rows of piles;
constructing a rigid frame beam on the top of the double-row piles, wherein the rigid frame beam connects the double-row piles to form a whole;
a jack is arranged at the bottom of the rigid frame beam, and the jack is inverted and corresponds to the vertical groove;
and placing a baffle in the vertical groove, and embedding the baffle into a soil layer through the jack in a static pressure manner.
2. A construction method of a micro-disturbance fabricated soil retaining structure according to claim 1, wherein: two or more than two sets of double row piles are under construction to the plate body extending direction of the baffle, and the double row piles of each set are arranged at intervals, and the baffle is limited between the double row piles of each set.
3. A construction method of a micro-disturbance fabricated soil retaining structure according to claim 1, wherein: and a plurality of baffles are statically pressed one by one in the vertical groove through the jack, and the baffles are combined to support and block the soil blocking surface.
4. A construction method of a micro-disturbance fabricated soil retaining structure according to claim 3, wherein: the bottom of the static pressure first baffle is provided with a wedge angle or a conical tip.
5. A construction method of a micro-disturbance fabricated soil retaining structure according to claim 4, wherein: and a steel blade foot is welded at the bottom of the baffle plate at the bottom.
6. A construction method of a micro-disturbance fabricated soil retaining structure according to claim 1, wherein: and constructing the baffles along the extending direction of the soil blocking surface, wherein the adjacent baffles form a continuous structure, and each baffle is arranged between the corresponding double rows of piles.
7. A construction method of a micro-disturbance fabricated soil retaining structure according to claim 1, wherein: the double-row piles and the rigid frame beam are of cast-in-place reinforced concrete structures, and the baffle is of a prefabricated reinforced concrete structure.
8. A construction method of a micro-disturbance fabricated soil retaining structure according to claim 1, wherein: and a through water drainage hole is reserved on the baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210711371.5A CN114892712B (en) | 2022-06-22 | 2022-06-22 | Construction method of micro-disturbance assembled soil retaining structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210711371.5A CN114892712B (en) | 2022-06-22 | 2022-06-22 | Construction method of micro-disturbance assembled soil retaining structure |
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| CN114892712A true CN114892712A (en) | 2022-08-12 |
| CN114892712B CN114892712B (en) | 2024-06-28 |
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Citations (9)
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|---|---|---|---|---|
| KR200369479Y1 (en) * | 2004-05-25 | 2004-12-04 | 김창근 | The land-side protection wall panel |
| KR20060032823A (en) * | 2004-10-13 | 2006-04-18 | 코오롱건설주식회사 | Soil retaining method using two rows pile |
| KR20090085448A (en) * | 2008-02-04 | 2009-08-07 | 코오롱건설주식회사 | Soil retaining method for two rows pile |
| CN202689008U (en) * | 2012-06-11 | 2013-01-23 | 东南大学 | Supporting structure for double-row prefabricated high-strength concrete thin-walled steel pipe pile foundation pit |
| CN103758134A (en) * | 2014-01-24 | 2014-04-30 | 中国建筑股份有限公司 | Combined double-row pile supporting system and construction method thereof |
| CN203782682U (en) * | 2014-01-23 | 2014-08-20 | 深圳市工勘岩土工程有限公司 | Guide slot assembly type pile-intermediate plate device |
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| CN110468873A (en) * | 2019-09-16 | 2019-11-19 | 南京吉欧地下空间科技有限公司 | Piles underpinning structure and application method under a kind of small space |
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-
2022
- 2022-06-22 CN CN202210711371.5A patent/CN114892712B/en active Active
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|---|---|---|---|---|
| KR200369479Y1 (en) * | 2004-05-25 | 2004-12-04 | 김창근 | The land-side protection wall panel |
| KR20060032823A (en) * | 2004-10-13 | 2006-04-18 | 코오롱건설주식회사 | Soil retaining method using two rows pile |
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| CN202689008U (en) * | 2012-06-11 | 2013-01-23 | 东南大学 | Supporting structure for double-row prefabricated high-strength concrete thin-walled steel pipe pile foundation pit |
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| CN114892712B (en) | 2024-06-28 |
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