CN111456081A - Pile foundation retaining wall structure and construction method - Google Patents
Pile foundation retaining wall structure and construction method Download PDFInfo
- Publication number
- CN111456081A CN111456081A CN202010181884.0A CN202010181884A CN111456081A CN 111456081 A CN111456081 A CN 111456081A CN 202010181884 A CN202010181884 A CN 202010181884A CN 111456081 A CN111456081 A CN 111456081A
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- retaining wall
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention provides a pile foundation retaining wall structure and a construction method thereof, wherein the pile foundation retaining wall structure comprises a cast-in-place pile at the lower part, a crown beam at the middle part, main stress H-shaped steel and secondary stress H-shaped steel which penetrate through the whole retaining wall structure, and a concrete precast slab at the upper part, wherein the secondary stress H-shaped steel is positioned between the two main stress H-shaped steels, and the concrete precast slab is inserted into a main stress H-shaped steel groove and a secondary stress H-shaped steel groove. The H-shaped steel and the cast-in-place pile foundation are combined to ensure that the retaining wall meets the requirements of skid resistance and inclination resistance. The combined structure can reduce the engineering quantity of the cast-in-place pile and the engineering cost. Meanwhile, the upper part of the retaining wall is of an assembly structure, so that the building speed is improved, and the height of the retaining wall can be adjusted according to engineering requirements. Compared with the traditional pile-plate wall scheme, the retaining wall has the remarkable characteristics of simple structure, small occupied space, simplicity and convenience in construction, good durability, energy conservation, environmental protection, reduction of building garbage, cost conservation and the like.
Description
Technical Field
The invention relates to a pile foundation retaining wall structure and a construction method, which are mainly suitable for the technical field of civil engineering.
Background
The retaining wall is a structure for supporting roadbed filling soil or hillside soil body and preventing the filling soil or the soil body from deforming and destabilizing. In civil engineering such as water conservancy project, shipping engineering, road and bridge engineering, building engineering and the like, the retaining wall is widely applied and has a plurality of types including cantilever type walls, counterfort type walls, balance weight type walls, sheet pile walls and the like. The sheet pile wall is a soil retaining structure formed by upright slab-shaped members for resisting lateral soil pressure, and is generally used for foundation pit support, slope protection and construction of temporary cofferdams and underground structures. The sheet pile wall can be divided into two types of steel sheet piles and precast reinforced concrete sheet piles. In the construction process, the construction quantity of the cast-in-place pile structure is large, the utilization rate of materials is not high, and the engineering cost is very high. The pile foundation retaining wall structure can reduce the engineering cost and the construction difficulty and becomes a great difficulty for design engineers.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a pile foundation retaining wall structure which is mainly suitable for the technical field of civil engineering and can reduce the engineering quantity and the cost.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a pile foundation retaining wall structure which characterized in that: the retaining wall structure comprises a cast-in-place pile at the lower part, a crown beam at the middle part, main stress H-shaped steel and secondary stress H-shaped steel which penetrate through the whole retaining wall structure, and a concrete precast slab at the upper part, wherein the secondary stress H-shaped steel is positioned between the two main stress H-shaped steels, and the concrete precast slab is inserted into a main stress H-shaped steel groove and a secondary stress H-shaped steel groove.
Further: the retaining wall is inclined to the soil blocking side at a small angle, the deflection angle is 5-10 degrees, and the anti-overturning capacity of the retaining wall can be improved after deflection.
Further: the cast-in-place piles are arranged in the foundation drill holes at intervals, and the diameter of each cast-in-place pile is 0.6-1.0 m.
Further: the crown beam is connected with the cast-in-place piles at all the lower parts, and the rigidity and the integrity of the retaining wall supporting system are enhanced by the crown beam.
Further: the main stress H-shaped steel penetrates through the crown beam from the upper part of the retaining wall and is embedded into the cast-in-place pile at the lower part, and the embedding depth is not less than one half of the total length of steel.
Further: and the secondary stress H-shaped steel is embedded into the crown beam between the two cast-in-place piles from the upper part of the retaining wall.
Further: the width and the thickness of the precast slabs are determined according to the distance between the cast-in-place piles and the size of the H-shaped steel, and the range of the height of the single precast slab is 20-50 cm.
Further: the pile foundation retaining wall structure is also provided with a back wall reverse filter body, a drainage crushed stone, a water collecting flower pipe and a drainage solid pipe, wherein the back wall reverse filter body adopts fine pebbles, and the drainage crushed stone is coarse pebbles; the drainage crushed stone is arranged on the back filter body of the wall.
Further: the water collecting perforated pipe is arranged in the inverted filter body, the solid drainage pipe penetrates through the concrete precast slab at the bottommost part and then is connected with the water collecting perforated pipe, and the perforated pipe and the solid drainage pipe are PVC pipes with the diameter of phi 75-150.
The above further technical schemes can also be combined for use.
Another object of the present invention is to provide a method for constructing a retaining wall structure of a pile foundation, which comprises the following steps:
(1) determining the construction operation position of the retaining wall structure according to geological survey data, positioning and setting off the position of the cast-in-place pile in sequence, determining the accurate position of the later-stage hole digging, and drilling by using percussion drilling;
(2) hoisting a reinforcement cage of the cast-in-place pile into the drill hole, hoisting and fixing the main stress H-shaped steel into the hole after the reinforcement cage is hoisted, and then casting concrete of the pile foundation part;
(3) after the pile foundation construction is finished and the design strength is reached, binding the crown beam steel bars and welding or binding the reserved exposed parts of the pile foundation steel bars, embedding secondary stress H-shaped steel into the crown beam, then pouring the crown beam, and extending the pile top of the cast-in-place pile into the crown beam;
(4) and after the hole is formed in the bottom concrete precast slab in advance, the bottom concrete precast slab is inserted into the steel grooves of the main stress H-shaped steel and the secondary stress H-shaped steel.
(5) And paving and filling a reverse filter body behind the wall, embedding the water collecting perforated pipe into the reverse filter body, and connecting the drainage solid pipe with the water collecting perforated pipe after penetrating through the reserved hole of the concrete precast slab.
(6) And gradually installing the concrete precast slabs, and discharging water crushed stones and soil bodies after backfilling the wall along with the increase of the height of the retaining wall.
The invention has the beneficial effects that: the H-shaped steel and the cast-in-place pile foundation are combined to ensure that the retaining wall meets the requirements of skid resistance and inclination resistance. The combined structure can reduce the engineering quantity of the cast-in-place pile and the engineering cost. Meanwhile, the upper part of the retaining wall is of an assembly structure, so that the building speed is improved, and the height of the retaining wall can be adjusted according to engineering requirements. Compared with the traditional pile-plate wall scheme, the retaining wall has the remarkable characteristics of simple structure, small occupied space, simplicity and convenience in construction, good durability, energy conservation, environmental protection, reduction of building garbage, cost conservation and the like.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a three-dimensional schematic of an embodiment of the present invention;
fig. 2 is a side schematic view of an embodiment of the invention.
Detailed Description
Reference is made to the accompanying drawings. The invention relates to a pile foundation retaining wall structure, which comprises a cast-in-place pile 1 at the lower part, a crown beam 2 at the middle part, main stress H-shaped steel 3 penetrating into the cast-in-place pile 1 from the upper part of a retaining wall, secondary stress H-shaped steel 4 penetrating into the crown beam from the upper part of the retaining wall to the middle part, a concrete precast slab 5 at the upper part, a wall back-filter 6, drainage crushed stone 7, a water collecting flower pipe 8 and a drainage solid pipe 9.
In an embodiment of the invention:
the retaining wall (the cast-in-place pile 1, the crown beam 2, the main stress H-shaped steel 3, the secondary stress H-shaped steel 4 and the concrete precast slab 5) is inclined to the soil retaining side at a small angle, the deflection angle is 5-10 degrees, and the anti-overturning capacity of the retaining wall can be improved after deflection.
The cast-in-place piles 1 are arranged in the foundation drill hole at intervals, and the diameter of each cast-in-place pile is 0.6-1.0 m.
The crown beam 2 is connected with the cast-in-place piles 1 at all lower parts, and the crown beam 2 enhances the rigidity and integrity of the retaining wall supporting system.
The main stress H-shaped steel 3 penetrates through the crown beam 2 and is embedded into the cast-in-place pile 1 at the lower part, and the embedded depth is not less than one half of the total length of steel.
The secondary stress H-shaped steel 4 is embedded into the crown beam 2.
The concrete precast slabs 5 are inserted into steel grooves of the main stress H-shaped steel 3 and the secondary stress H-shaped steel 4, the width and the thickness of each precast slab 5 are determined according to the distance between cast-in-place piles and the size of the H-shaped steel, the height range of a single precast slab is 20-50 cm, and a plurality of concrete precast slabs 5 are sequentially stacked in the height direction according to the height of a retaining wall.
The back wall reverse filter body 6 adopts fine pebbles, the drainage crushed stone 7 is coarse pebbles, and the drainage crushed stone 7 is arranged on the back wall reverse filter body 6.
The water collecting floral tube 8 is arranged in the reverse filter body 6, the solid drainage tube 9 penetrates through the concrete precast slab at the bottommost part and then is connected with the water collecting floral tube 8, and the floral tube and the solid tube are PVC tubes of phi 75-150.
The construction method of the pile foundation retaining wall structure comprises the following steps:
(1) firstly, determining the construction operation position of a retaining wall structure according to geological survey data, positioning and setting out the position of a cast-in-place pile 1 in sequence, determining the accurate position of later-stage hole digging, and drilling by using a percussion drill.
(2) And after the reinforcement cage of the cast-in-place pile 1 is finished on a flat site, the reinforcement cage is hoisted into the drill hole, and reinforcement measures are taken to prevent the reinforcement cage from deforming in the hoisting process. And after the steel reinforcement cage is hoisted, hoisting the main stress H-shaped steel 3 into the hole and fixing. And then pouring concrete of the pile foundation part, and strictly controlling the pouring speed.
(3) And after the pile foundation construction is finished and the design strength is reached, binding the steel bars of the crown beam 2 and welding or binding the exposed parts of the reserved steel bars of the pile foundation, pre-embedding the secondary stress H-shaped steel 4 into the crown beam 2, and then pouring the crown beam 2. The pile top of the cast-in-place pile 1 extends into the crown beam 2, and the crown beam 2 ensures the rigidity and integrity of the supporting system.
(4) And after the hole is formed in the bottom concrete precast slab 5 in advance, the precast slab 3 is inserted into the steel grooves of the H-shaped steel 3 and the H-shaped steel 4.
(5) And a reverse filter body 6 is paved and filled behind the wall, a water collecting flower pipe 8 is embedded in the reverse filter body 6, and a drainage solid pipe 9 penetrates through a reserved hole of the concrete precast slab 5 and then is connected with the water collecting flower pipe 8.
(6) And gradually installing the concrete precast slabs 5, and along with the increase of the height of the retaining wall, discharging water and crushed stone 7 and soil mass after backfilling the wall.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, additions and substitutions within the scope of the present invention.
Claims (10)
1. The utility model provides a pile foundation retaining wall structure which characterized in that: the retaining wall structure comprises a cast-in-place pile at the lower part, a crown beam at the middle part, main stress H-shaped steel and secondary stress H-shaped steel which penetrate through the whole retaining wall structure, and a concrete precast slab at the upper part, wherein the secondary stress H-shaped steel is positioned between the two main stress H-shaped steels, and the concrete precast slab is inserted into a main stress H-shaped steel groove and a secondary stress H-shaped steel groove.
2. The pile-foundation retaining wall structure according to claim 1, wherein: the retaining wall is inclined to the soil blocking side at a small angle, the deflection angle is 5-10 degrees, and the anti-overturning capacity of the retaining wall can be improved after deflection.
3. The pile-foundation retaining wall structure according to claim 1, wherein: the cast-in-place piles are arranged in the foundation drill holes at intervals, and the diameter of each cast-in-place pile is 0.6-1.0 m.
4. The pile-foundation retaining wall structure according to claim 1, wherein: the crown beam is connected with the cast-in-place piles at all the lower parts, and the rigidity and the integrity of the retaining wall supporting system are enhanced by the crown beam.
5. The pile-foundation retaining wall structure according to claim 1, wherein: and the main stress H-shaped steel penetrates through the crown beam from the upper part of the retaining wall and is embedded into the cast-in-place pile at the lower part.
6. The pile-foundation retaining wall structure according to claim 1, wherein: and the secondary stress H-shaped steel is embedded into the crown beam between the two cast-in-place piles from the upper part of the retaining wall.
7. The pile-foundation retaining wall structure according to claim 1, wherein: the width and the thickness of the precast slabs are determined according to the distance between the cast-in-place piles and the size of the H-shaped steel, and the range of the height of the single precast slab is 20-50 cm.
8. The pile-foundation retaining wall structure according to claim 1, wherein: the pile foundation retaining wall structure is also provided with a back wall reverse filter body, a drainage crushed stone, a water collecting flower pipe and a drainage solid pipe, wherein the back wall reverse filter body adopts fine pebbles, and the drainage crushed stone is coarse pebbles; the drainage crushed stone is arranged on the back filter body of the wall.
9. The pile-foundation retaining wall structure according to claim 8, wherein: the water collecting perforated pipe is arranged in the inverted filter body, the solid drainage pipe penetrates through the concrete precast slab at the bottommost part and then is connected with the water collecting perforated pipe, and the perforated pipe and the solid drainage pipe are PVC pipes with the diameter of phi 75-150.
10. A construction method of a pile foundation retaining wall structure is characterized by comprising the following steps:
(1) determining the construction operation position of the retaining wall structure according to geological survey data, positioning and setting off the position of the cast-in-place pile in sequence, determining the accurate position of the later-stage hole digging, and drilling by using percussion drilling;
(2) hoisting a reinforcement cage of the cast-in-place pile into the drill hole, hoisting and fixing the main stress H-shaped steel into the hole after the reinforcement cage is hoisted, and then casting concrete of the pile foundation part;
(3) after the pile foundation construction is finished and the design strength is reached, binding the crown beam steel bars and welding or binding the reserved exposed parts of the pile foundation steel bars, embedding secondary stress H-shaped steel into the crown beam, then pouring the crown beam, and extending the pile top of the cast-in-place pile into the crown beam;
(4) after the hole is formed in advance in the bottom concrete precast slab, inserting the bottom concrete precast slab into steel grooves of the main stress H-shaped steel and the secondary stress H-shaped steel;
(5) paving and filling a reverse filter body behind the wall, embedding a water collecting perforated pipe into the reverse filter body, and connecting a drainage solid pipe with the water collecting perforated pipe after penetrating through a reserved hole of the concrete precast slab;
(6) and gradually installing the concrete precast slabs, and discharging water crushed stones and soil bodies after backfilling the wall along with the increase of the height of the retaining wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010181884.0A CN111456081A (en) | 2020-03-16 | 2020-03-16 | Pile foundation retaining wall structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010181884.0A CN111456081A (en) | 2020-03-16 | 2020-03-16 | Pile foundation retaining wall structure and construction method |
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| CN111456081A true CN111456081A (en) | 2020-07-28 |
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| CN202010181884.0A Pending CN111456081A (en) | 2020-03-16 | 2020-03-16 | Pile foundation retaining wall structure and construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031003A (en) * | 2020-09-09 | 2020-12-04 | 江苏科技大学 | Support device with combined action of pile and soil and construction method thereof |
| CN112523253A (en) * | 2020-11-23 | 2021-03-19 | 中建桥梁有限公司 | Construction method of reusable retaining wall |
| CN115094948A (en) * | 2022-07-27 | 2022-09-23 | 中冶建工集团有限公司 | Pile-plate type retaining wall combined frame and construction method |
| TWI790741B (en) * | 2021-02-24 | 2023-01-21 | 牧野哲 | Retaining wall and its construction method |
| CN118029415A (en) * | 2024-04-15 | 2024-05-14 | 福建省建筑设计研究院有限公司 | Prefabricated side slope vertical supporting structure and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283292A (en) * | 2005-03-31 | 2006-10-19 | Landex Kogyo Kk | Retaining wall structure and retaining wall construction method |
| CN107700523A (en) * | 2017-09-26 | 2018-02-16 | 福州市规划设计研究院 | The prefabricated drainage system and construction method for facing upward inclined retaining wall |
| CN207211158U (en) * | 2017-08-23 | 2018-04-10 | 甘肃中建市政工程勘察设计研究院 | Assembled pile board wall foundation pit supporting construction |
| CN212506385U (en) * | 2020-03-16 | 2021-02-09 | 中国电建集团华东勘测设计研究院有限公司 | Pile foundation retaining wall structure |
-
2020
- 2020-03-16 CN CN202010181884.0A patent/CN111456081A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283292A (en) * | 2005-03-31 | 2006-10-19 | Landex Kogyo Kk | Retaining wall structure and retaining wall construction method |
| CN207211158U (en) * | 2017-08-23 | 2018-04-10 | 甘肃中建市政工程勘察设计研究院 | Assembled pile board wall foundation pit supporting construction |
| CN107700523A (en) * | 2017-09-26 | 2018-02-16 | 福州市规划设计研究院 | The prefabricated drainage system and construction method for facing upward inclined retaining wall |
| CN212506385U (en) * | 2020-03-16 | 2021-02-09 | 中国电建集团华东勘测设计研究院有限公司 | Pile foundation retaining wall structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031003A (en) * | 2020-09-09 | 2020-12-04 | 江苏科技大学 | Support device with combined action of pile and soil and construction method thereof |
| CN112523253A (en) * | 2020-11-23 | 2021-03-19 | 中建桥梁有限公司 | Construction method of reusable retaining wall |
| TWI790741B (en) * | 2021-02-24 | 2023-01-21 | 牧野哲 | Retaining wall and its construction method |
| CN115094948A (en) * | 2022-07-27 | 2022-09-23 | 中冶建工集团有限公司 | Pile-plate type retaining wall combined frame and construction method |
| CN118029415A (en) * | 2024-04-15 | 2024-05-14 | 福建省建筑设计研究院有限公司 | Prefabricated side slope vertical supporting structure and construction method thereof |
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Application publication date: 20200728 |