CN112779923A - Pile foundation structure of building engineering on high slope and construction process thereof - Google Patents
Pile foundation structure of building engineering on high slope and construction process thereof Download PDFInfo
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- CN112779923A CN112779923A CN202110022811.1A CN202110022811A CN112779923A CN 112779923 A CN112779923 A CN 112779923A CN 202110022811 A CN202110022811 A CN 202110022811A CN 112779923 A CN112779923 A CN 112779923A
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- slope
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- pile foundation
- foundation structure
- reinforcement cage
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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
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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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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- 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
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- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a pile foundation structure of building engineering on a high slope and a construction process thereof, wherein the pile foundation structure comprises a slope (1), the slope (1) comprises a slope top (11) and a slope bottom (12), a slope line (13) is formed between the slope top (11) and the slope bottom (12), a pile body (2) is arranged downwards on the slope top (11), a potential fracture surface (14) is arranged inside the slope (1), the pile body (2) is divided into an upper section of pile body (21) and a lower section of pile body (22) by the potential fracture surface (14), and an isolation material (3) is arranged on the periphery of the upper section of pile body (21). The invention relates to a pile foundation structure of building engineering on a high slope and a construction process thereof, which can solve the problem that a pile foundation and a supporting structure of a building on the high slope are mutually influenced.
Description
Technical Field
The invention relates to a pile foundation structure for building engineering on a high slope and a construction process thereof, belonging to the technical field of civil engineering.
Background
Civil building engineering in mountain areas is often built according to mountains by using terrain conditions due to the limitation of terrain height difference, and building table type buildings, falling-floor buildings and hanging-foot buildings on high slopes of the mountains are formed.
In general, civil construction engineering on such high slopes utilizes pile foundations to transfer loads directly into stable geotechnical layers of sufficient depth below the potential fracture surfaces of the slopes; the slope is usually supported by means of prestressed anchor cables and lattices.
The above conventional practice has two problems:
(1) the pile foundation and the side slope supporting structure are not independent from each other, and are mutually influenced and interacted. The horizontal force generated by the upper building under the action of earthquake and wind load can be transferred to the rock soil around the pile and the side slope supporting structure within a certain depth range of the pile foundation, so that the side slope stability is influenced; if the slope body at the upper section of the potential fracture surface of the side slope slides, additional shearing force is generated on the pile foundation of the civil building engineering;
(2) due to the interaction relationship, the influence of the two must be considered when designing, and the number and the diameter of anchor cables must be increased for the supporting structure; the pile diameter and reinforcement ratio of the building pile foundation need to be increased, and the construction cost is greatly increased.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a pile foundation structure of building engineering on a high slope and a construction process thereof aiming at the prior art, and the pile foundation structure can solve the problem that a pile foundation and a supporting structure of a building on the high slope are mutually influenced.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a building engineering's stake foundation structure on high slope, it includes the side slope, the side slope includes top of slope and slope bottom, form the side slope line between top of slope and the slope bottom, the top of slope is provided with the pile body downwards, there is a potential fracture surface inside the side slope, the potential fracture surface is separated into upper segment pile body and hypomere pile body with the pile body, upper segment pile body periphery is provided with barrier material.
Optionally, the pile body includes the steel reinforcement cage, the steel reinforcement cage is indulged the muscle including being a plurality of pile foundations that the annular was arranged, and a plurality of pile foundations are indulged muscle outside top-down interval and are provided with a plurality of annular stirrups, and a plurality of stirrups outside interval is provided with a plurality of fixed reinforcements, barrier material passes through the ligature of galvanized steel wire on a plurality of fixed reinforcements.
Optionally, the steel reinforcement cage still includes a plurality of horizontal strengthening ribs and a plurality of vertical strengthening rib, horizontal strengthening rib connection sets up about between two pile foundation longitudinal reinforcement of mutual disposition, vertical strengthening rib connection sets up around between two pile foundation longitudinal reinforcement of mutual disposition.
Optionally, the insulation material is a polystyrene board or an rubber-plastic board.
Optionally, a plurality of side slope support grid hooks are arranged on the side slope line at intervals, and side slope support prestressed anchor cables are arranged towards the inside of the side slope through the side slope support grid hooks.
A construction process of a pile foundation structure of building engineering on a high slope comprises the following steps:
the method comprises the following steps: paying off and positioning the pile foundation, placing an artificial water mill drill frame, and performing artificial water mill drilling hole forming downwards at the slope top of the side slope according to the hole forming diameter, wherein the hole forming length penetrates through the position below the potential fracture surface and is embedded into the stable rock-soil layer;
step two: binding a reinforcement cage according to the design specification, and welding and fixing the reinforcement;
step three: drilling a hole by a manual water mill until the designed pile bottom elevation is reached, cleaning the bottom, and checking the hole;
step four: lifting the steel reinforcement cage to the position above the orifice, binding the first section of isolation material on the fixed steel reinforcement by using a galvanized steel wire, placing the steel reinforcement cage into the hole, binding the second section of isolation material on the fixed steel reinforcement by using the galvanized steel wire, continuously placing the steel reinforcement cage into the hole, and repeating the operation until the steel reinforcement cage is completely placed into the hole;
step five: and (5) pouring concrete.
Optionally, the depth of the hole-forming embedded stable rock-soil layer in the step one is more than or equal to 2.5 m.
Optionally, the depth of the pile end embedded into the stable rock-soil layer below the potential fracture surface in the first step is not smaller than 4.0/alpha, wherein alpha is the horizontal deformation coefficient of the pile.
Compared with the prior art, the invention has the advantages that:
1. the invention effectively transfers the upper load to the position below the potential fracture surface of the high slope by utilizing the pile foundation, thereby avoiding the overload damage of the upper part to the slope body;
2. according to the invention, the pile body above the potential fracture surface of the side slope is isolated from the rock (soil) wall by using the isolation material, so that the horizontal force of earthquake and wind load is prevented from being transmitted to the slope body through the friction between the pile body and the rock (soil) wall, the additional shearing force generated by the relative dislocation of the potential slump body on the pile foundation is reduced, and the side slope supporting structure and the building pile foundation are independent and do not influence each other;
3. the invention can reduce the construction cost of the pile foundation and the supporting structure.
Drawings
Fig. 1 is a schematic view of a pile foundation structure of a construction work on a high slope according to the present invention.
Fig. 2 is a schematic structural diagram of the pile body in fig. 1.
Fig. 3 is a sectional view a-a of fig. 2.
Wherein:
Slope bottom 12
Pile foundation longitudinal rib 231
Stirrup 232
Fixing reinforcing bar 4
Galvanized steel wire 5
Slope support grid hook 6
And the slope supports a prestressed anchor cable 7.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to fig. 3, the pile foundation structure of the building engineering on the high slope according to the present invention includes a slope 1, where the slope 1 includes a top slope 11 and a bottom slope 12, a slope line 13 is formed between the top slope 11 and the bottom slope 12, the top slope 11 is provided with a pile 2 downward, a potential fracture surface 14 is present inside the slope 1, the potential fracture surface 14 divides the pile 2 into an upper pile 21 and a lower pile 22, and an isolation material 3 is provided on the periphery of the upper pile 21;
the pile body 2 comprises a reinforcement cage 23, the reinforcement cage 23 comprises a plurality of pile foundation longitudinal bars 231 which are annularly arranged, a plurality of annular stirrups 232 are arranged at intervals from top to bottom outside the plurality of pile foundation longitudinal bars 231, a plurality of fixed steel bars 4 are arranged at intervals outside the plurality of stirrups 232, and the isolating material 3 is bound on the plurality of fixed steel bars 4 through galvanized steel wires 5;
the reinforcement cage 23 further comprises a plurality of transverse reinforcing ribs 233 and a plurality of longitudinal reinforcing ribs 234, wherein the transverse reinforcing ribs 233 are connected and arranged between two pile foundation longitudinal ribs 231 which are oppositely arranged left and right, and the longitudinal reinforcing ribs 234 are connected and arranged between two pile foundation longitudinal ribs 231 which are oppositely arranged front and back;
the isolation material 3 is a polystyrene board or an rubber-plastic board;
a plurality of slope support grid hooks 6 are arranged on the slope line 13 at intervals, and slope support prestressed anchor cables 7 are arranged on the slope support grid hooks 6 towards the inside of the slope 1.
A construction process of a pile foundation structure of building engineering on a high slope comprises the following steps:
the method comprises the following steps: setting out and positioning a pile foundation, placing an artificial water mill drill frame, and performing artificial water mill drilling on a hole at the downward slope top of the side slope according to the hole forming diameter, wherein the hole forming length penetrates through the position below a potential fracture surface to be embedded into a stable rock-soil layer, and the embedding depth is usually more than or equal to 2.5 m;
if the anti-sliding effect of the pile foundation is considered, the depth of the pile end embedded into the stable rock-soil layer below the potential fracture surface is not smaller than 4.0/alpha (alpha is the horizontal deformation coefficient of the pile);
step two: binding a reinforcement cage according to the design specification, and welding and fixing the reinforcement;
step three: drilling a hole by a manual water mill until the designed pile bottom elevation is reached, cleaning the bottom, and checking the hole;
step four: lifting the steel reinforcement cage to the position above the orifice, binding the first section of isolation material on the fixed steel reinforcement by using a galvanized steel wire, placing the steel reinforcement cage into the hole, binding the second section of isolation material on the fixed steel reinforcement by using the galvanized steel wire, continuously placing the steel reinforcement cage into the hole, and repeating the operation until the steel reinforcement cage is completely placed into the hole;
step five: and (5) pouring concrete.
In addition, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a building engineering's stake foundation structure on high slope which characterized in that: it includes side slope (1), side slope (1) is including top of slope (11) and slope end (12), form side slope line (13) between top of slope (11) and the slope end (12), top of slope (11) is provided with pile body (2) downwards, there is a potential fracture surface (14) side slope (1) inside, potential fracture surface (14) separate into upper segment pile body (21) and lower segment pile body (22) with pile body (2), upper segment pile body (21) periphery is provided with isolation material (3).
2. The pile foundation structure of construction work on a high slope according to claim 1, wherein: pile body (2) include steel reinforcement cage (23), steel reinforcement cage (23) are indulged muscle (231) including a plurality of pile foundations that are the annular and arrange, and a plurality of pile foundations are indulged muscle (231) outside top-down interval and are provided with a plurality of annular stirrup (232), and a plurality of stirrup (232) outside interval is provided with a plurality of fixed reinforcing bars (4), barrier material (3) are ligatured on a plurality of fixed reinforcing bars (4) through galvanized steel wire (5).
3. The pile foundation structure of construction work on a high slope according to claim 2, wherein: the reinforcement cage (23) further comprises a plurality of transverse reinforcing ribs (233) and a plurality of longitudinal reinforcing ribs (234), the transverse reinforcing ribs (233) are connected and arranged between two pile foundation longitudinal ribs (231) which are oppositely arranged left and right, and the longitudinal reinforcing ribs (234) are connected and arranged between two pile foundation longitudinal ribs (231) which are oppositely arranged front and back.
4. The pile foundation structure of construction work on a high slope according to claim 1, wherein: the isolation material (3) is a polystyrene board or an rubber-plastic board.
5. The pile foundation structure of construction work on a high slope according to claim 1, wherein: a plurality of slope support grid hooks (6) are arranged on the slope line (13) at intervals, and slope support pre-stressed anchor cables (7) are arranged in the slope (1) from the slope support grid hooks (6).
6. A construction process of a pile foundation structure of building engineering on a high slope is characterized by comprising the following steps:
the method comprises the following steps: paying off and positioning the pile foundation, placing an artificial water mill drill frame, and performing artificial water mill drilling hole forming downwards at the slope top of the side slope according to the hole forming diameter, wherein the hole forming length penetrates through the position below the potential fracture surface and is embedded into the stable rock-soil layer;
step two: binding a reinforcement cage according to the design specification, and welding and fixing the reinforcement;
step three: drilling a hole by a manual water mill until the designed pile bottom elevation is reached, cleaning the bottom, and checking the hole;
step four: lifting the steel reinforcement cage to the position above the orifice, binding the first section of isolation material on the fixed steel reinforcement by using a galvanized steel wire, placing the steel reinforcement cage into the hole, binding the second section of isolation material on the fixed steel reinforcement by using the galvanized steel wire, continuously placing the steel reinforcement cage into the hole, and repeating the operation until the steel reinforcement cage is completely placed into the hole;
step five: and (5) pouring concrete.
7. The construction process of a pile foundation structure of construction engineering on a high slope according to claim 6, characterized in that: the depth of the medium-pore embedded stable rock-soil layer in the first step is more than or equal to 2.5 m.
8. The construction process of a pile foundation structure of construction engineering on a high slope according to claim 6, characterized in that: in the first step, the depth of the pile end embedded into the stable rock-soil layer below the potential fracture surface is not smaller than 4.0/alpha, wherein alpha is the horizontal deformation coefficient of the pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022811.1A CN112779923A (en) | 2021-01-08 | 2021-01-08 | Pile foundation structure of building engineering on high slope and construction process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022811.1A CN112779923A (en) | 2021-01-08 | 2021-01-08 | Pile foundation structure of building engineering on high slope and construction process thereof |
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| Publication Number | Publication Date |
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| CN112779923A true CN112779923A (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110022811.1A Pending CN112779923A (en) | 2021-01-08 | 2021-01-08 | Pile foundation structure of building engineering on high slope and construction process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094922A (en) * | 2022-06-17 | 2022-09-23 | 中铁建工集团有限公司 | Side slope foundation integrated foundation and construction process thereof |
-
2021
- 2021-01-08 CN CN202110022811.1A patent/CN112779923A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094922A (en) * | 2022-06-17 | 2022-09-23 | 中铁建工集团有限公司 | Side slope foundation integrated foundation and construction process thereof |
| CN115094922B (en) * | 2022-06-17 | 2023-03-10 | 中铁建工集团有限公司 | Slope foundation integrated foundation and construction process thereof |
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