CN115142433A - Foundation pit supporting structure and construction method thereof - Google Patents
Foundation pit supporting structure and construction method thereof Download PDFInfo
- Publication number
- CN115142433A CN115142433A CN202210853457.1A CN202210853457A CN115142433A CN 115142433 A CN115142433 A CN 115142433A CN 202210853457 A CN202210853457 A CN 202210853457A CN 115142433 A CN115142433 A CN 115142433A
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- Prior art keywords
- foundation pit
- pine
- fixing
- pile
- pine pile
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- 238000010276 construction Methods 0.000 title claims description 16
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims abstract description 80
- 235000011613 Pinus brutia Nutrition 0.000 claims abstract description 80
- 241000018646 Pinus brutia Species 0.000 claims abstract description 80
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000004873 anchoring Methods 0.000 claims description 38
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 210000003205 muscle Anatomy 0.000 claims description 12
- 238000009412 basement excavation Methods 0.000 claims description 4
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract description 3
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 11
- 238000005266 casting Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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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
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- 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
- E02D17/02—Foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
-
- 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
- E02D5/26—Prefabricated piles made of timber with or without reinforcement; Means affording protection against spoiling of the wood; Self-cleaning of piles placed in water
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Wood Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Foundations (AREA)
Abstract
The invention relates to a foundation pit supporting structure, which is characterized in that: the method comprises the following steps: the elevation of the bottom end of the pine pile is lower than the elevation of the bottom surface of the foundation pit; and the cushion layer is poured on the bottom surface of the foundation pit and supported between the opposite pine piles. The pine pile has four kinds of strength of better tensile strength, compression strength, bending strength and shearing strength in the subsequent use process.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a foundation pit supporting structure.
Background
With the development of social economy and the progress of building structure technology, in the process of foundation pit construction operation, earth excavation construction is often the key construction content, and the overall construction progress is influenced. Different supporting methods are adopted according to different geology and the size of a foundation pit, a steel plate column is erected at the edge of the foundation pit and is welded and fixed in a conventional method, however, when a small or strip foundation pit is supported, the whole structure of the foundation pit is small, large-area excavation is needed by using the steel plate column, the requirement on the compactness of a soil layer structure of the terrain is high, great mechanical noise can be generated by using the steel plate column in the installation process, personnel around the foundation pit are greatly influenced, and the attractiveness is influenced after the installation is finished.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a foundation pit supporting structure, the pine pile is fixed on the side wall of a foundation pit through an outer side fixing piece in the installation scheme, the overall stability of the support is ensured through a pouring layer, the support is safer, the pine pile can be used for construction on a soft soil layer, the construction noise is low, and the attractiveness can be improved by using a wood structure.
The technical scheme for realizing the aim is a foundation pit supporting structure, which comprises:
the bottom end elevation of the pine pile is lower than the bottom surface elevation of the foundation pit; and
and the cushion layer is poured on the bottom surface of the foundation pit and supported between the opposite pine piles.
Further, the method also comprises the following steps: the anchor comprises a fixing piece, a pouring layer and an anchoring rib, wherein the fixing piece is attached to the surface of the pine pile, the pouring layer is poured on the pavement around the foundation pit, and the anchoring rib penetrates through the fixing piece and the pine pile and is anchored into the pouring layer.
Further, the fixing member includes: be fixed in many the first fixed part on the top of anchor muscle and be fixed in many the second fixed part of the bottom of anchor muscle, first fixed part with the second fixed part is along a plurality of the anchor muscle symmetry sets up.
Further, the method also comprises the following steps: and the reinforcing plate is fixed on one side of the first fixing part and one side of the second fixing part, which are far away from the pine pile, and the reinforcing plate is propped against the corresponding end part of the anchoring rib.
5. A method of constructing an excavation supporting structure as claimed in any one of claims 1 to 4, wherein: the method comprises the following steps:
providing pine piles, and driving a plurality of pine piles along the inner wall of the formed foundation pit so that the elevation of the bottom of each pine pile is lower than that of the bottom of the foundation pit;
and pouring a cushion layer on the bottom surface of the foundation pit, wherein the cushion layer is supported between the opposite pine piles.
Further, the top elevation of pine stake is higher than the foundation ditch to form the depressed area around the foundation ditch, still include: providing a fixing piece, and attaching the fixing piece to the surface of the pine pile;
providing an anchoring rib, and penetrating the anchoring rib through the fixing piece and the pine pile and into a recessed area;
and pouring concrete in the sunken area to form a pouring layer, and embedding the anchoring ribs in the pouring layer.
Further, the fixing member further includes: the first fixing part and the second fixing part are symmetrically arranged along the anchoring rib;
fixing the first fixing part on the top of the anchoring rib;
and fixing the second fixing part to the bottom of the anchoring rib.
Further, providing a reinforcing plate;
and fixing the first fixing part and the second fixing part on one side of the reinforcing plate far away from the pine pile and propping against the corresponding end parts of the anchoring ribs.
Compared with the prior art, the invention has the following beneficial effects:
the pine pile is fixed on the side wall of the foundation pit through the outer side fixing piece, and the overall stability of the support is ensured through the pouring layer, so that the support is safer; in the integral structure, the cushion layer is poured on the bottom layer, the cushion layer can ensure that the pine piles can be better fixed, the operation is simple, the construction efficiency is high, the cost is low, the construction noise is low, and the attractive appearance can be improved by using a wood structure.
Drawings
Fig. 1 is a schematic structural diagram of a foundation pit supporting structure of the present invention.
Fig. 2 is a schematic structural diagram at a in fig. 1.
Illustration of the drawings: 1. pouring a layer; 2. anchoring ribs; 3. a fixing member; 4. a reinforcing plate; 5. pine piles; 7. and (5) cushion coating.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, a supporting structure for a foundation pit includes: a plurality of pine piles 5 are arranged along the inner wall of the foundation pit, and the elevation of the bottom ends of the pine piles 5 is lower than that of the bottom layer of the foundation pit; and the cushion layer 7 is poured at the bottom layer of the foundation pit, and the cushion layer 7 is supported between the opposite pine piles 5.
In the present invention, a preferred embodiment is: in this supporting construction, pine pile 5 is that the stake footpath is 160 mm's structure, for make pine pile 5 more convenient beat establish in the bottom of foundation ditch, the bottom of pine pile 5 cuts into sharp-pointed toper, pine pile 5 will along the slope of foundation ditch wall insert and establish the bottom of foundation ditch to pour concrete at the bottom and form bed course 7, bed course 7 is firm in the bottom of foundation ditch pine pile avoids pine pile to establish the skew that leads to because beat and locate, bed course 7 can be better fixed pine pile 5 avoids pine pile 5 takes place the displacement in follow-up use, uses set firmly the piece makes pine pile 5 more laminates the foundation ditch wall. The pine pile 5 has four kinds of strength of better tensile strength, compression strength, bending strength and shearing strength in the subsequent use process.
Further, referring to fig. 2, the method further includes: the anchor comprises a fixing piece 3 attached to the surface of the pine pile 5, a pouring layer 1 poured on the road surface around the foundation pit, and an anchor rib 2 which penetrates through the fixing piece 3 and the pine pile 5 and is anchored into the pouring layer 1. Preferably, a thread gap is formed between two adjacent pine piles, so that the anchoring rib can be inserted into the pine pile through the gap, and the anchoring rib 2 extends out of the pine pile 5 and forms a fixed end in the foundation pit; the fixing part 3 is fixedly connected to the fixed end, and the pine pile 5 is supported by the fixing part 3. Further, the fixing member 3 includes: be fixed in many the first fixed part on the top of anchor muscle 2 and be fixed in many the second fixed part of the bottom of anchor muscle 2. Preferably, the fixing pieces arranged up and down can better prop the pine piles, and the pine piles are made to cling to the surface of the foundation pit.
In the present invention, a preferred embodiment is: what adopt is that model # 20's reinforcing bar carries out mutual welded fastening as mounting 3 as anchor muscle 2 and model # 10's channel-section steel, the one end of anchor muscle 2 is connected mounting 3, mounting 3 makes 5 further subsides of pine stake are located foundation pit wall, the preferred, 3 horizontal supports of mounting establish many pine stake 5. In order to save materials, the fixing pieces 3 are arranged according to the size of the inner wall of the foundation pit, the pine pile 5 is installed, the adjusted fixing pieces 3 are used for fixing the periphery of the pine pile 5, and one fixing piece 3 is used on one side of the pine pile, so that the material is saved and the reinforcing effect can be well achieved.
Further, the fixing member 3 includes: be fixed in many the first fixed part on the top of anchor muscle and be fixed in many the second fixed part of the bottom of anchor muscle.
Further, the method also comprises the following steps: and the reinforcing plate 4 is fixed on one side of the first fixing part and one side of the second fixing part, which is far away from the pine pile 5, the first fixing part and the second fixing part are symmetrically arranged along the anchoring ribs 2, and the reinforcing plate 4 supports against the corresponding end parts of the anchoring ribs 2. The reinforcing plate 4 can further ensure the firmness of the fixing member. In the present invention, a preferred embodiment is: the reinforcing plate 4 is made of a type 20# steel bar.
The invention also provides a construction method, which comprises the following steps:
providing pine piles 5, and driving a plurality of pine piles 5 along the inner wall of the formed foundation pit to enable the bottom elevation of each pine pile 5 to be lower than the bottom elevation of the foundation pit; and pouring a cushion layer 7 on the bottom surface of the foundation pit, wherein the cushion layer 7 is supported between the opposite pine piles 5.
Further, the top elevation of pine stake 5 is higher than the foundation ditch to form the depressed area around the foundation ditch, still include: providing a fixing piece 3, and attaching the fixing piece 3 to the pine pile 5; providing an anchoring rib 2, and penetrating the anchoring rib 2 through the fixing piece 3 and the pine pile and extending into a recessed area; and pouring concrete in the sunken area to form a pouring layer 1, and embedding the anchoring ribs in the pouring layer 1.
Further, the fixing member 3 further includes: a first fixing portion and a second fixing portion symmetrically provided along the anchoring rib 2; fixing the first fixing part to the top of the anchoring rib 2; and fixing the second fixing part at the bottom of the anchoring rib 2.
Further, a reinforcing plate 4 is provided: and fixing the reinforcing plate 4 on one side of the first fixing part and the second fixing part, which is far away from the pine pile 5, and abutting against the corresponding end parts of the anchoring ribs.
The following describes the use of the foundation pit supporting structure of the present invention.
In the present invention, a preferred embodiment is: in the supporting structure, the pine pile 5 is a structure with a pile diameter of 160mm, in order to enable the pine pile 5 to be more conveniently driven and arranged at the bottom end of a foundation pit, the bottom end of the pine pile 5 is cut into a sharp cone shape, the pine pile 5 is driven and arranged at the bottom of the foundation pit along the gradient of the foundation pit wall, concrete is poured at the bottom end to form the cushion layer 7, the cushion layer 7 is fixedly arranged at the bottom of the foundation pit to firmly drive the pine pile 5 and support the opposite pine pile 5, the deviation of the pine pile caused by driving without reaching is avoided, the anchoring rib 2 and the fixing piece 3 are welded and fixed, the fixing piece 3 is arranged at one end of the anchoring rib 2, the other end of the anchoring rib 2 is driven and arranged at two adjacent pine pile pieces 5, the fixing piece 3 is abutted against the pine pile 5, so that the pine pile 5 is more attached to the foundation pit wall, reinforcing steel bars of the type #20 are adopted as the fixing pieces 3 of the anchoring rib 2 and the fixing pieces of the type #10, the fixing piece 1 is arranged at the top of the anchoring layer, the anchoring layer 1, the casting reinforcing steel bars are easily buried and the casting layer and the subsequent casting layer 2 is not easily buried and fixed in the foundation pit, and the casting layer, and the subsequent casting layer is not easily buried and the casting layer 2; the pine pile 5 has four kinds of strength of tensile strength, compression strength, bending strength and shearing strength in the subsequent use process.
While the present invention has been described in detail and with reference to the embodiments thereof as shown in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (8)
1. The utility model provides a foundation ditch supporting construction, characterized by: the method comprises the following steps:
the bottom end elevation of the pine pile is lower than the bottom surface elevation of the foundation pit; and
and the cushion layer is poured on the bottom surface of the foundation pit and supported between the opposite pine piles.
2. A foundation pit supporting construction according to claim 1, wherein: further comprising: the anchor comprises a fixing piece, a pouring layer and an anchoring rib, wherein the fixing piece is attached to the surface of the pine pile, the pouring layer is poured on the road surface around the foundation pit, and the anchoring rib penetrates through the fixing piece and the pine pile and is anchored into the pouring layer.
3. A foundation pit supporting construction as claimed in claim 2, wherein: the fixing member includes: be fixed in many the first fixed part on the top of anchor muscle and be fixed in many the second fixed part of the bottom of anchor muscle, first fixed part with the second fixed part is along a plurality of the anchor muscle symmetry sets up.
4. A foundation pit supporting construction according to claim 3, wherein: further comprising: and the reinforcing plate is fixed on one side of the first fixing part and one side of the second fixing part, which are far away from the pine pile, and the reinforcing plate is propped against the corresponding end part of the anchoring rib.
5. A method of constructing an excavation supporting structure as claimed in any one of claims 1 to 4, wherein: the method comprises the following steps:
providing pine piles, and driving a plurality of pine piles along the inner wall of the formed foundation pit so that the bottom elevation of each pine pile is lower than the bottom elevation of the foundation pit;
and pouring a cushion layer on the bottom surface of the foundation pit, wherein the cushion layer is supported between the opposite pine piles.
6. A method of constructing a supporting structure for a foundation pit as claimed in claim 5, wherein: the top elevation of pine stake is higher than the foundation ditch to form the depressed area around the foundation ditch, still include: providing a fixing piece, and attaching the fixing piece to the surface of the pine pile;
providing an anchoring rib, and penetrating the anchoring rib through the fixing piece and the pine pile and into the sunken area;
and pouring concrete in the recessed area to form a pouring layer, and embedding the anchoring ribs in the pouring layer.
7. A method of constructing a supporting structure for a foundation pit as claimed in claim 6, wherein: the fixing member further includes: the first fixing part and the second fixing part are symmetrically arranged along the anchoring rib;
fixing the first fixing part to the top of the anchoring rib;
and fixing the second fixing part to the bottom of the anchoring rib.
8. A method of constructing a retaining and protecting structure for a foundation pit as claimed in claim 7, wherein: providing a reinforcing plate;
and fixing the first fixing part and the second fixing part on one side of the reinforcing plate far away from the pine pile and propping against the corresponding end parts of the anchoring ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210853457.1A CN115142433A (en) | 2022-07-08 | 2022-07-08 | Foundation pit supporting structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210853457.1A CN115142433A (en) | 2022-07-08 | 2022-07-08 | Foundation pit supporting structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115142433A true CN115142433A (en) | 2022-10-04 |
Family
ID=83412275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210853457.1A Pending CN115142433A (en) | 2022-07-08 | 2022-07-08 | Foundation pit supporting structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115142433A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563605A (en) * | 2004-03-23 | 2005-01-12 | 孙学毅 | Constructing method for controlling deformation on ground excavated |
| CN101787701A (en) * | 2010-03-16 | 2010-07-28 | 标力建设集团有限公司 | Construction method for supporting pine pile in elevator shaft foundation pit |
| CN111411630A (en) * | 2020-03-31 | 2020-07-14 | 上海二十冶建设有限公司 | Supporting method for local deepened area in deep foundation pit |
| CN112095617A (en) * | 2020-08-21 | 2020-12-18 | 中国建筑第八工程局有限公司 | Deep pit supporting structure in foundation pit and construction method thereof |
-
2022
- 2022-07-08 CN CN202210853457.1A patent/CN115142433A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563605A (en) * | 2004-03-23 | 2005-01-12 | 孙学毅 | Constructing method for controlling deformation on ground excavated |
| CN101787701A (en) * | 2010-03-16 | 2010-07-28 | 标力建设集团有限公司 | Construction method for supporting pine pile in elevator shaft foundation pit |
| CN111411630A (en) * | 2020-03-31 | 2020-07-14 | 上海二十冶建设有限公司 | Supporting method for local deepened area in deep foundation pit |
| CN112095617A (en) * | 2020-08-21 | 2020-12-18 | 中国建筑第八工程局有限公司 | Deep pit supporting structure in foundation pit and construction method thereof |
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Application publication date: 20221004 |