CN113882391A - A foundation ditch supporting construction for building engineering - Google Patents
A foundation ditch supporting construction for building engineering Download PDFInfo
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- CN113882391A CN113882391A CN202111177486.2A CN202111177486A CN113882391A CN 113882391 A CN113882391 A CN 113882391A CN 202111177486 A CN202111177486 A CN 202111177486A CN 113882391 A CN113882391 A CN 113882391A
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 38
- 238000010276 construction Methods 0.000 title claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000002689 soil Substances 0.000 abstract description 12
- 238000005452 bending Methods 0.000 abstract description 6
- 239000010419 fine particle Substances 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a foundation pit supporting structure for constructional engineering, and belongs to the technical field of foundation pit supporting. The pile foundation comprises an I-shaped foundation pile, a modular baffle, a bottom frame, a support rod and a hydraulic cylinder; a first hinged plate and a second hinged plate are arranged on one side of the I-shaped foundation pile, and a plurality of I-shaped foundation piles are linearly arranged at equal intervals and inserted into the side face of the foundation pit; the upper edge of the modularized baffle plate is provided with a positioning convex rib, and the lower edge of the modularized baffle plate is provided with a positioning groove matched with the positioning convex rib; the two sides of the underframe are respectively hinged with the first hinge plates of the I-shaped foundation piles on the two sides of the foundation pit, and a pair of third hinge plates are symmetrically arranged on the two sides of the underframe. I-shaped foundation piles are inserted into the side wall of the foundation pit, and the modular baffles are spliced up and down to form a complete side baffle of the foundation pit, so that fine particles in the soil can be blocked; the modularized baffle plate is fixed in a segmented mode through the I-shaped foundation piles, and the modularized baffle plate is matched with the positioning grooves through the positioning convex ribs, so that the strength and the bending resistance can be improved, the assembly is convenient, and the modularized baffle plate can be used repeatedly.
Description
Technical Field
The invention relates to a foundation pit supporting structure for constructional engineering, and belongs to the technical field of foundation pit supporting.
Background
The foundation pit support is a supporting, blocking, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit. The foundation pit support has many types of structures, and mainly comprises: reinforced concrete sheet piles, high-pressure jet grouting piles, channel steel sheet piles and the like. The reinforced concrete sheet pile has the characteristics of simple construction, short field operation period and the like, and is widely applied to foundation pits, but the hammering method is generally adopted for driving the reinforced concrete sheet pile, so that the vibration and the noise are large, meanwhile, the soil extrusion is serious in the pile sinking process, and the method is limited in urban engineering. The high-pressure jet grouting pile is made of cement paste, and is characterized in that the cement paste is sprayed into a soil layer and is mixed with a soil body through a rotating nozzle at high pressure to form a cement-soil reinforcing body, and the cement paste and the soil layer are mutually overlapped to form a row pile for retaining soil and stopping water; a channel steel sheet pile foundation pit support is a simple steel sheet pile enclosure wall and is formed by overlapping or arranging channel steel front and back surface fasteners side by side. The channel steel is 6-8 meters long, and the model is determined by calculation, so that the channel steel has the advantages of good durability and high secondary utilization rate; the construction is convenient, and the construction period is short; the disadvantages are that: fine particles in the soil cannot be blocked; the bending resistance is weak, the support rigidity is small, and the deformation is large after excavation.
Therefore, the foundation pit supporting structure for the building engineering is designed in a modular design, is convenient to install and disassemble, can block fine particles in soil, and is high in bending resistance, high in rigidity and not prone to deformation.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a supporting construction of foundation ditch for building engineering, it has solved present channel-section steel sheet pile foundation ditch support can not block the tiny granule in the soil, and the bending resistance is weaker, and the support rigidity is little, and the deformation is great after the excavation problem.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a foundation pit supporting structure for constructional engineering comprises an I-shaped foundation pile, a modular baffle, an underframe, a supporting rod and a hydraulic cylinder;
a first hinged plate and a second hinged plate are arranged on one side of the I-shaped foundation pile, wherein the first hinged plate is positioned on the lower half part of the I-shaped foundation pile, the second hinged plate is positioned on the upper half part of the I-shaped foundation pile, a hinged hole is formed in the first hinged plate, two hinged holes are formed in the second hinged plate, a plurality of I-shaped foundation piles are linearly arranged at equal intervals and inserted into the side surface of the foundation pit, a limiting block is arranged in a groove in the side surface of the I-shaped foundation pile, and the limiting block is positioned on the lower half part of the I-shaped foundation pile;
the modular retaining plates are provided with positioning convex ribs, positioning grooves matched with the positioning convex ribs are formed in the lower sides of the modular retaining plates, two ends of each modular retaining plate are sequentially inserted into side grooves of two adjacent I-shaped foundation piles, a plurality of modular retaining plates are spliced up and down to form retaining plates of a foundation pit, and limiting blocks block the end parts of the modular retaining plates at the lowest part;
the two sides of the underframe are respectively hinged with the first hinge plates of the I-shaped foundation piles on the two sides of the foundation pit, a pair of third hinge plates are symmetrically arranged on the two sides of the underframe, hinge holes are formed in the third hinge plates, a cylinder hinge plate is arranged in the middle of the underframe, a hinge hole is formed in the cylinder hinge plate, and the cylinder hinge plate is connected with one hinge hole of the second hinge plate of the I-shaped foundation pile through a hydraulic cylinder;
one end of the supporting rod is connected with the other hinge hole of the second hinge plate, and the other end of the supporting rod is connected with the hinge hole of the third hinge plate.
As a preferred example, the modularized baffle plate is made of square section steel, a positioning convex rib is arranged on the square section steel, and a positioning groove matched with the positioning convex rib is arranged below the square section steel.
As a preferable example, the side face of the I-shaped foundation pile is provided with scales for marking the height of the foundation pit, and the zero point of the scales is flush with the underframe.
As a preferable example, the upper end of the I-shaped foundation pile and the end part of the uppermost modular baffle are fixed through double screws.
As a preferable example, the I-shaped foundation pile is made of I-shaped steel.
The construction method comprises the following steps:
(1) planning the position of a foundation pit;
(2) driving a foundation pile;
(3) excavating a foundation pit;
(4) installing a bottom frame;
(5) installing a modular baffle;
(6) and (6) reinforcing the foundation pit.
The invention has the beneficial effects that:
(1) i-shaped foundation piles are inserted into the side wall of the foundation pit, and the modular baffles are spliced up and down to form a complete side baffle of the foundation pit, so that fine particles in the soil can be blocked;
(2) the I-shaped foundation pile segmented fixing modular baffle is adopted, and the modular baffle is matched with the positioning groove through the positioning convex rib, so that the strength and the bending resistance can be improved, the assembly is convenient, and the modular baffle can be repeatedly used;
(3) the underframe can fix a plurality of I-shaped foundation piles together, so that the bottom fixing strength is enhanced, and collapse is prevented;
(4) because the side wall of the foundation pit is difficult to be strictly vertical in the process of building the foundation pit, and the supporting rod is difficult to be directly installed, the cylinder hinged plate is designed on the underframe, after the I-shaped foundation pile and the underframe are adjusted to be vertical by using the temporarily hinged hydraulic cylinder, the supporting rod is easy to install, a stable reinforcing structure is formed by using a right triangle formed between the supporting rod and the I-shaped foundation pile as well as the underframe, the supporting rigidity is high, and the deformation after excavation is smaller.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a pile hole of a foundation pit;
FIG. 3 is a schematic structural diagram of the excavated foundation pit;
FIG. 4 is a schematic view of the installation of a foundation pit reinforcing structure;
FIG. 5 is a schematic cross-sectional view of a modular baffle;
FIG. 6 is a schematic view of a bottom limiting structure of a modular baffle;
FIG. 7 is a schematic view of the assembled modular baffles;
FIG. 8 is a schematic view of a structure in which the upper end of an I-shaped foundation pile is screwed through a modular baffle.
In the figure: the device comprises an I-shaped foundation pile 1, a first hinged plate 101, a second hinged plate 102, a limiting block 103, a modular baffle 2, a positioning convex rib 201, a positioning groove 202, a chassis 3, a third hinged plate 301, a cylinder hinged plate 302, a supporting rod 4, a hydraulic cylinder 5 and a pile hole 6.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easily understood, the invention is further described with reference to the following embodiments.
Example 1
As shown in fig. 1 to 8, a foundation pit supporting structure for construction engineering comprises an i-shaped foundation pile 1, a modular baffle 2, a chassis 3, a support rod 4 and a hydraulic cylinder 5;
a first hinge plate 101 and a second hinge plate 102 are arranged on one side of the I-shaped foundation pile 1, wherein the first hinge plate 101 is positioned on the lower half part of the I-shaped foundation pile 1, the second hinge plate 102 is positioned on the upper half part of the I-shaped foundation pile 1, a hinge hole is formed in the first hinge plate 101, two hinge holes are formed in the second hinge plate 102, a plurality of I-shaped foundation piles 1 are linearly arranged at equal intervals and inserted into the side surface of a foundation pit, a limit block 103 is arranged in a groove in the side surface of the I-shaped foundation pile 1, and the limit block 103 is positioned on the lower half part of the I-shaped foundation pile 1;
the upper edge of each modular baffle 2 is provided with a positioning convex rib 201, the lower edge of each modular baffle 2 is provided with a positioning groove 202 matched with the positioning convex rib 201, two ends of each modular baffle 2 are sequentially inserted into side grooves of two adjacent I-shaped foundation piles 1, and a plurality of modular baffles 2 are spliced up and down to form a baffle of a foundation pit;
the two sides of the underframe 3 are respectively hinged with the first hinge plates 101 of the I-shaped foundation piles 1 on the two sides of the foundation pit, a pair of third hinge plates 301 are symmetrically arranged on the two sides of the underframe 3, hinge holes are formed in the third hinge plates 301, a cylinder hinge plate 302 is arranged in the middle of the underframe 3, a hinge hole is formed in the cylinder hinge plate 302, and the cylinder hinge plate 302 is connected with one hinge hole of the second hinge plates 102 of the I-shaped foundation piles 1 through a hydraulic cylinder 5;
one end of the support rod 4 is connected with the other hinge hole of the second hinge plate 102, and the other end of the support rod 4 is connected with the hinge hole of the third hinge plate 301.
Example 2
The side surface of the I-shaped foundation pile 1 is provided with a scale for marking the height of the foundation pit, and the zero point of the scale is flush with the underframe 3.
The upper end of the I-shaped foundation pile 1 is fixed with the end part of the uppermost modular baffle 2 through double screws.
The I-shaped foundation pile 1 is made of I-shaped steel. The other structure is the same as embodiment 1.
The construction method comprises the following steps:
(1) planning the position of the foundation pit: marking lines on two sides of the foundation pit, and marking pile hole points on the lines at equal intervals;
(2) driving a foundation pile: arranging a pile hole 6 at the pile hole point, pressing an I-shaped foundation pile 1 into the pile hole 6, and observing the scale of the I-shaped foundation pile 1, which is intersected with the ground, until the scale reaches the designed depth of the foundation pit;
(3) excavating a foundation pit: digging between the lines on the two sides of the foundation pit until the depth of the foundation pit reaches the zero scale of the I-shaped foundation pile 1;
(4) installing the underframe 3: the two sides of the underframe 3 are respectively hinged with the first hinged plates 101 of the I-shaped foundation piles 1 on the two sides of the foundation pit, the underframe 3 fixes a plurality of I-shaped foundation piles 1 together, a plurality of sections of underframe 3 are continuously paved, and waterproof rubber mats can be paved on the upper surface of the underframe 3;
(5) installing the modular baffle 2: the two ends of each modular baffle 2 are sequentially inserted into the side grooves of two adjacent I-shaped foundation piles 1, the positioning convex ribs 201 are matched with the positioning grooves 202 to form a labyrinth to block fine silt, the modular baffles 2 are spliced up and down to form a complete foundation pit side baffle, and the upper ends of the I-shaped foundation piles 1 and the end part of the uppermost modular baffle 2 are fixed through double screws;
(6) foundation pit reinforcement: one end of a hydraulic cylinder 5 is hinged to the hinged plate 302 of the cylinder, the other end of the hydraulic cylinder 5 is connected with the hinged hole of the second hinged plate 102 of the I-shaped foundation pile 1, the modular baffle 2 is adjusted to be vertical to the underframe 3, at the moment, a supporting rod 4 is installed, one end of the supporting rod 4 is connected with the second hinged plate 102, the other end of the supporting rod 4 is connected with the third hinged plate 301, after the supporting rod 4 on one side is installed, the upper end of the hydraulic cylinder 5 is detached and connected with the hinged hole of the second hinged plate 102 of the I-shaped foundation pile 1 on the other side, the supporting rod 4 on the other side is installed, and after the supporting rod 4 is installed on each I-shaped foundation pile 1, foundation pit supporting construction is completed.
It has the following advantages:
(1) the I-shaped foundation pile 1 is inserted into the side wall of the foundation pit, and the modular baffles 2 are spliced up and down to form a complete side baffle of the foundation pit, so that fine particles in soil can be blocked;
(2) the I-shaped foundation pile 1 is adopted to fix the modularized baffle 2 in sections, and the modularized baffle 2 is matched with the positioning groove 202 through the positioning convex rib 201, so that the strength and the bending resistance can be improved, the assembly is convenient, and the repeated use can be realized;
(3) the underframe 3 can fix a plurality of I-shaped foundation piles 1 together, so that the bottom fixing strength is enhanced, and collapse is prevented;
(4) in the process of building the foundation pit, the side wall of the foundation pit is difficult to be strictly vertical, and the supporting rod 4 is difficult to be directly installed, so that the air cylinder hinged plate 302 is designed on the underframe 3, after the I-shaped foundation pile 1 and the underframe 3 are adjusted to be vertical by utilizing the temporarily hinged hydraulic cylinder 5, the supporting rod 4 is easy to install, a stable reinforcing structure is formed by utilizing a right triangle formed between the supporting rod 4 and the I-shaped foundation pile 1 as well as the underframe 3, the supporting rigidity is high, and the deformation after excavation is small.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A foundation pit supporting structure for constructional engineering is characterized by comprising an I-shaped foundation pile, a modular baffle, an underframe, a supporting rod and a hydraulic cylinder;
a first hinged plate and a second hinged plate are arranged on one side of the I-shaped foundation pile, wherein the first hinged plate is positioned on the lower half part of the I-shaped foundation pile, the second hinged plate is positioned on the upper half part of the I-shaped foundation pile, a hinged hole is formed in the first hinged plate, two hinged holes are formed in the second hinged plate, a plurality of I-shaped foundation piles are linearly arranged at equal intervals and inserted into the side surface of the foundation pit, a limiting block is arranged in a groove in the side surface of the I-shaped foundation pile, and the limiting block is positioned on the lower half part of the I-shaped foundation pile;
the modular retaining plates are provided with positioning convex ribs, positioning grooves matched with the positioning convex ribs are formed in the lower sides of the modular retaining plates, two ends of each modular retaining plate are sequentially inserted into side grooves of two adjacent I-shaped foundation piles, a plurality of modular retaining plates are spliced up and down to form retaining plates of a foundation pit, and limiting blocks block the end parts of the modular retaining plates at the lowest part;
the two sides of the underframe are respectively hinged with the first hinge plates of the I-shaped foundation piles on the two sides of the foundation pit, a pair of third hinge plates are symmetrically arranged on the two sides of the underframe, hinge holes are formed in the third hinge plates, a cylinder hinge plate is arranged in the middle of the underframe, a hinge hole is formed in the cylinder hinge plate, and the cylinder hinge plate is connected with one hinge hole of the second hinge plate of the I-shaped foundation pile through a hydraulic cylinder;
one end of the supporting rod is connected with the other hinge hole of the second hinge plate, and the other end of the supporting rod is connected with the hinge hole of the third hinge plate.
2. The foundation pit supporting structure for building engineering according to claim 1, wherein the modular baffles are square section steel, positioning ribs are arranged on the upper edge of the square section steel, and positioning grooves matched with the positioning ribs are arranged on the lower edge of the square section steel.
3. The foundation pit supporting structure for building engineering according to claim 1, wherein the side of the i-shaped foundation pile is provided with a scale for marking the height of the foundation pit, and the zero point of the scale is flush with the underframe.
4. The foundation pit supporting structure for construction engineering according to claim 1, wherein the upper end of the i-shaped foundation pile is fixed to the end of the uppermost modular baffle by a double screw.
5. The foundation pit supporting structure for construction engineering according to claim 1, wherein the i-shaped foundation pile is formed of i-shaped steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111177486.2A CN113882391A (en) | 2021-10-09 | 2021-10-09 | A foundation ditch supporting construction for building engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111177486.2A CN113882391A (en) | 2021-10-09 | 2021-10-09 | A foundation ditch supporting construction for building engineering |
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| Publication Number | Publication Date |
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| CN113882391A true CN113882391A (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111177486.2A Pending CN113882391A (en) | 2021-10-09 | 2021-10-09 | A foundation ditch supporting construction for building engineering |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256811A (en) * | 2015-09-30 | 2016-01-20 | 常州大学怀德学院 | Sheet pile supporting structure with water stopping function and construction method |
| CN211312538U (en) * | 2019-11-28 | 2020-08-21 | 四川鸥鹏建筑工程公司 | Novel deep foundation pit supporting structure |
| CN212612506U (en) * | 2020-04-29 | 2021-02-26 | 北京北排建设有限公司 | Quick strutting arrangement of foundation ditch |
-
2021
- 2021-10-09 CN CN202111177486.2A patent/CN113882391A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256811A (en) * | 2015-09-30 | 2016-01-20 | 常州大学怀德学院 | Sheet pile supporting structure with water stopping function and construction method |
| CN211312538U (en) * | 2019-11-28 | 2020-08-21 | 四川鸥鹏建筑工程公司 | Novel deep foundation pit supporting structure |
| CN212612506U (en) * | 2020-04-29 | 2021-02-26 | 北京北排建设有限公司 | Quick strutting arrangement of foundation ditch |
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Application publication date: 20220104 |