CN112962614B - Foundation pit support and construction method thereof - Google Patents
Foundation pit support and construction method thereof Download PDFInfo
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- CN112962614B CN112962614B CN202110070444.2A CN202110070444A CN112962614B CN 112962614 B CN112962614 B CN 112962614B CN 202110070444 A CN202110070444 A CN 202110070444A CN 112962614 B CN112962614 B CN 112962614B
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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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Abstract
The application relates to a foundation pit support and a construction method thereof, belonging to the technical field of building foundation pits. The foundation pit support comprises a first pile row and a second pile row which are arranged in parallel, wherein the first pile row is of a close-packed pile structure; the second pile row is of a close-packed pile structure or a sparse pile structure; the first pile row comprises at least one first pile body which is vertically arranged; the second pile row comprises at least one second pile body which is obliquely arranged, and the construction method of the foundation pit support comprises the following steps: 1) measuring and positioning; 2) piling; 3) and casting a formed crown beam at the periphery of the foundation pit through the template. The deformation of the foundation pit support can be effectively controlled in a soft soil area without an inner support system.
Description
Technical Field
The application relates to the field of building foundation pits, in particular to a foundation pit support and a construction method thereof.
Background
In soft soil areas, because the soil quality is soft and the deformation control is difficult, the requirement on foundation pit support is high when a foundation pit is excavated, and the foundation pit support needs good deformation resistance, a support system or an anchor rod system is often needed.
The pile-supported structure system has long construction period and high construction cost, particularly has low cost performance for foundation pits with large excavation area, and the use amount is gradually reduced in the excavation of single-layer basements; the pile anchor structure system often produces red lines and can not be approved by the competent department, and even if the recyclable anchor rod is adopted, the pile anchor structure system often faces the embarrassment that the recyclable anchor rod can not be recycled completely in the actual use process.
In view of the above-mentioned related art, the inventor believes that there is a need for a foundation pit support that can control the deformation of a foundation pit well in soft soil areas without using a support anchor system.
Disclosure of Invention
In order to better reduce the deformation of the autonomous supporting piles in the soft soil area, the foundation pit supporting method is provided.
A foundation pit support comprises a first pile row and a second pile row which are arranged in parallel, wherein the first pile row is of a close-packed pile structure; the second pile row is of a close-packed pile structure or a sparse pile structure;
the first pile row comprises at least one first pile body which is vertically arranged;
the second pile row comprises at least one second pile body which is obliquely arranged.
Through adopting above-mentioned technical scheme, first pile row through close-packed pile structure is as soil retaining structure, and the second pile body that sets up through the slope of second pile row provides horizontal resistance for a fender pile, and the soil is kept off to better hindering, struts and is difficult to warp more under the effect of soil.
Optionally, the system further comprises a crown beam, the top end of the first pile row is fixed to the crown beam, and the top end of the second pile row is fixed to the crown beam.
By adopting the technical scheme, the first pile body vertically arranged and the second pile body obliquely arranged are connected into a whole through the crown beam, so that the overall rigidity of the first pile row and the second pile row can be effectively increased.
Optionally, the crown beams include a first crown beam, a second crown beam, and a plurality of connecting beams, the top ends of the first pile rows are fixed to the first crown beam, the top ends of the second pile rows are fixed to the second crown beam, the connecting beams are located between the first crown beam and the second crown beam, one end of each connecting beam is fixed to the first crown beam, and the other end of each connecting beam is fixed to the second crown beam.
By adopting the technical scheme, the first crown beam and the second crown beam are connected through the connecting beam, so that the consumption of materials in the manufacturing process of the crown beams is reduced, meanwhile, the first crown beam and the second crown beam can be kept connected with each other, the first crown beam is associated with the first pile row, the second crown beam is associated with the second pile row, and the whole supporting structure is associated into a whole.
Optionally, the second pile row further comprises a plurality of vertically arranged third pile bodies, the number of the second pile bodies is multiple, and the second pile bodies and the third pile bodies are arranged alternately along the arrangement direction of the second pile row.
Through adopting above-mentioned technical scheme, the third pile body that the second pile was arranged through vertical setting for second pile row structural rigidity is higher under the effect of third pile body, and third pile body and first pile body form gate-type structure, and the bulk strength of strutting is higher.
Optionally, the first pile row further comprises a plurality of fourth pile bodies obliquely arranged, the number of the first pile bodies is multiple, and the first pile bodies and the fourth pile bodies are alternately arranged along the arrangement direction of the first pile row.
By adopting the technical scheme, the first pile row provides better horizontal resistance for the first pile row through the fourth pile body which is obliquely arranged.
In a second aspect, in order to construct the foundation pit support, the application provides a construction method of the foundation pit support, which adopts the following technical scheme:
a construction method of a foundation pit support comprises the following steps:
1) and measuring and positioning: determining a position;
2) and piling: according to the arrangement mode of the first pile row and the second pile row, a first pile body, a second pile body, a third pile body and a fourth pile body are driven into each position through a pile driver;
the method comprises the following steps that position determination is carried out through a positioning frame before piling, the positioning frame comprises a frame body, the frame body is provided with positioning holes for inserting a first pile body, a second pile body, a third pile body and a fourth pile body, and the frame body is also provided with a fixing column which is inserted into the ground;
3) and casting a formed crown beam at the periphery of the foundation pit through the template.
Through adopting above-mentioned technical scheme, confirm the mounted position of first pile body, second pile body, third pile body and fourth pile body through the locating rack, each locating hole corresponds the mounted position for interval between the adjacent pile body is confirmed, and the direction of arranging of first pile row and the direction of arranging of second pile row can keep better straightness accuracy, and the installation accuracy is higher.
Optionally, the frame body includes fixed frame and adaptation frame, the fixed column set up in fixed frame, the locating hole set up in the adaptation frame, the adaptation frame has vertical frame and slope frame two kinds, four sides of vertical frame with fixed frame can dismantle the connection, the slope frame with fixed frame can dismantle the connection, adaptation frame both sides are provided with spacing spout and spacing slide rail respectively, and is adjacent the adaptation frame passes through spacing slide rail with spacing spout is relevant fixed.
By adopting the technical scheme, the vertical frame is used for driving the first pile body and the third pile body, the inclined frame is used for driving the second pile body and the fourth pile body, the vertical frame and the inclined frame are detachably connected with the fixed frame, the positioning frame can be matched with different arrangement modes of the first pile row and the second pile row for supporting through the combination of the vertical frame and the inclined frame, when in installation, the first pile body and the third pile body are firstly installed to better limit the positioning frame, then the second pile body and the fourth pile body are driven, when the second pile body and the fourth pile body are driven, because of the horizontal component force, the second pile body and the fourth pile body are difficult to deviate when being driven through the driving sequence of the first pile body and the third pile body, compared with the positioning of the vertical frame by the first pile body and the third pile body, then the fixed frame indirectly limits the inclined frame, and through the matching of the limiting sliding chute and the limiting sliding rail, the vertical frame directly limits the inclined frame, so that the inclined frame is prevented from moving better.
Optionally, a plurality of inclined holes are formed in the fixing frame, the inclined holes are obliquely arranged, a plurality of inclined rods are arranged in the inclined holes in a penetrating mode in a one-to-one correspondence mode, one end, far away from the fixing frame, of the fixing column is provided with a limiting inclined hole, one end of each inclined rod is inserted into the ground and penetrates through the limiting inclined hole, one end, located on the upper portion of the fixing frame, of each inclined rod is provided with a limiting plate, a penetrating hole for the limiting plate to penetrate is formed in the fixing frame, a penetrating groove is further formed in the fixing frame, and the penetrating groove is communicated with the penetrating hole and the inclined holes.
Through adopting above-mentioned technical scheme, insert subaerial and tip and fixed column fixed through the down tube slope, make the part that the down tube is located between fixed frame and the fixed column receive the hindrance of soil, fixed frame is difficult to take out from ground more, better fix fixed frame subaerial, the hole and pass through the groove of crossing of setting, make the down tube part draw out ground, the tip of down tube follows behind the roll-off in the spacing inclined hole, the down tube no longer prevents taking out of fixed frame, the down tube itself can be preserved and be used for pouring of back crown beam, the down tube improves the intensity of crown beam as the skeleton of crown beam.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the first pile row of the dense pile structure serves as a soil retaining structure, the second pile body obliquely arranged through the second pile row provides horizontal resistance for the supporting pile, and meanwhile, the first pile body vertically arranged and the second pile body obliquely arranged are connected into a whole through the crown beam, so that the overall rigidity of the first pile row and the second pile row can be effectively improved;
2. the first crown beam and the second crown beam are connected through the connecting beam, so that the consumption of materials in the manufacturing process of the crown beams is reduced, meanwhile, the first crown beam and the second crown beam can be kept connected with each other, the first crown beam is associated with the first pile row, and the second crown beam is associated with the second pile row, so that the whole supporting structure is associated into a whole;
3. the installation positions of the first pile body, the second pile body, the third pile body and the fourth pile body are determined through the positioning frame, each positioning hole corresponds to the installation position, the distance between the adjacent pile bodies is determined, the arrangement direction of the first pile row and the arrangement direction of the second pile row can keep better linearity, and the installation precision is higher.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present application;
FIG. 2 is a schematic structural view of a support in example 1 of the present application;
FIG. 3 is a cross-sectional view of a support in example 1 of the present application;
fig. 4 is a schematic view of a connection structure between a pile and a larsen steel sheet pile in embodiment 1 of the present application;
FIG. 5 is a schematic structural view of a crown beam in embodiment 2 of the present application;
FIG. 6 is a schematic structural view of a support in example 3 of the present application;
FIG. 7 is a schematic structural view of a support in example 4 of the present application;
FIG. 8 is a first structural view of a support in example 5 of the present application;
FIG. 9 is a second construction of a support according to example 5 of the present application;
FIG. 10 is a schematic structural view of a support in example 6 of the present application;
FIG. 11 is a schematic view of the mounting structure of the spacer and the pile;
FIG. 12 is a schematic view of the positioning frame;
figure 13 is a schematic structural view of the fixing frame;
FIG. 14 is an enlarged view at A of FIG. 13;
fig. 15 is a schematic view of a connection structure of the vertical frame and the inclined frame.
Description of reference numerals: 1. a crown beam; 11. a first crown beam; 12. a second crown beam; 13. a connecting beam; 2. a first pile row; 21. a first pile body; 22. a third pile body; 3. a second pile row; 31. a second pile body; 32. a fourth pile body; 5. larsen steel sheet piles; 6. a locking structure; 7. a fixing frame; 71. mounting holes; 72. fixing a column; 73. an inclined hole; 74. a diagonal bar; 741. a limiting plate; 75. limiting inclined holes; 76. passing through the hole; 77. passing through the groove; 78. an annular projection; 8. a vertical frame; 81. positioning holes; 82. limiting and flanging; 83. a limiting chute; 84. a limiting slide rail; 9. and (4) an inclined frame.
Detailed Description
The present application is described in further detail below with reference to figures 1-15.
The embodiment of the application discloses a foundation pit support.
Example 1
Referring to fig. 1 and 2, the foundation pit support is installed outside a foundation pit to support and protect the side wall and the surrounding environment of the foundation pit, and includes a top beam 1, a first pile row 2 and a second pile row 3, the first pile row 2 and the second pile row 3 are arranged side by side, the second pile row 3 is surrounded outside the foundation pit, the first pile row 2 is surrounded outside the second pile row 3, the first pile row 2 is composed of a plurality of vertically arranged first pile bodies 21, the second pile row 3 is composed of a plurality of obliquely arranged second pile bodies 31, the bottom end of the second pile body 31 is obliquely arranged towards the direction of the foundation pit, the arrangement direction of the first pile bodies 21 is parallel to the arrangement direction of the second pile bodies 31, and the first pile bodies 21 and the second pile bodies 31 can adopt steel pipe piles in precast piles.
The crown beam 1 is used for the first pile row 2 and the second pile row 3 to be fixed in a correlation mode, so that the structures in the support are connected into a whole, and the crown beam 1 is of a reinforced concrete structure formed by pouring concrete.
Referring to fig. 2 and 3, the crown beam 1 is a one-piece solid concrete block, the top end of the first pile body 21 and the top end of the second pile body 31 are both cast and fixed with the crown beam 1, the crown beam 1 is divided into blocks, the part of the crown beam 1 cast and fixed outside one first pile body 21 or outside one second pile body 31 is set as a block, the side wall of the block outside the first pile body 21 facing the bottom end of the first pile body 21 is perpendicular to the axis of the first pile body 21, the side wall of the block outside the second pile body 31 facing the bottom end of the second pile body 31 is perpendicular to the axis of the second pile body 31, and the side wall perpendicular to the first pile body 21 and the second pile body 31 is arranged on the block, so that construction of a node is facilitated, pressure on the first pile body 21 and the second pile body 31 is more directly transmitted to the crown beam 1, and the crown beam 1 is more difficult to break.
Referring to fig. 1 and 2, the bottom end of the first pile body 21 and the bottom end of the second pile body 31 are inserted into the ground, the second pile body 31 is arranged obliquely, so that the support has good pressure resistance, when soil topples towards the direction of a foundation pit, the second pile row 3 provides reverse thrust for the crown beam 1, the crown beam 1 prevents the soil from toppling through the first pile row 2, and the first pile body 21 is vertically arranged, so that the support integrally has good rigidity.
Referring to fig. 2 and 4, first pile row 2 adopts close-packed pile structure, interval between the adjacent first pile body 21 is less than 20cm, first pile row 2 is used for blockking earth and passes through, still be provided with Larsen steel sheet pile 5 between the first pile body 21 simultaneously, it is provided with hasp structure 6 to extend in opposite directions between the adjacent first pile body 21, Larsen steel sheet pile 5 both sides also are provided with hasp structure 6, 6 one-to-one of hasp structure of Larsen steel sheet pile 5 both sides slide install in two hasp structures 6 that adjacent two piles set up in opposite directions, further prevent passing through of soil through Larsen steel sheet pile 5.
The second pile row 3 adopts a comb pile structure, the distance between adjacent second pile bodies 31 is larger than 20cm, and the using amount of the second pile bodies 31 is reduced.
Example 2
Referring to fig. 5, the difference between this embodiment and embodiment 1 is that the crown beam 1 includes a first crown beam 11, a second crown beam 12, and a plurality of connecting beams 13, the plurality of connecting beams 13 are disposed at intervals along the arrangement direction of the first pile row 2, one end of each connecting beam 13 is fixed to the first crown beam 11, the other end of each connecting beam 13 is fixed to the second crown beam 12, the top end of the first pile body 21 is fixed to the first crown beam 11, the top end of the second pile body 31 is fixed to the second crown beam 12, and the connecting beam 13 is located between the first crown beam 11 and the second crown beam 12.
Example 3
Referring to fig. 6, the difference between this embodiment and embodiment 1 is that the second pile row 3 also adopts a close-packed pile structure, and the lock catch structures 6 are also oppositely extended and disposed between the adjacent second pile bodies 31, the larsen steel sheet pile 5 is also disposed between the adjacent second pile bodies 31, the lock catch structures 6 are disposed on two sides of the larsen steel sheet pile 5, and the lock catch structures 6 on two sides of the larsen steel sheet pile 5 are slidably mounted in the two lock catch structures 6 oppositely disposed on the adjacent two second pile bodies 31 one by one, so that the second pile row 3 can well block soil.
Example 4
Referring to fig. 7, the present embodiment is different from embodiment 1 in that the second pile row 3 includes a plurality of second pile bodies 31 and a plurality of vertically arranged third pile bodies 22, the number of the plurality of second pile bodies is at least three, the second pile bodies 31 and the third pile bodies 22 are alternately arranged along the arrangement direction of the second pile row 3, a portion of the second crown beam 12 outside the third pile body 22 poured and fixed is also set as a block, and a side wall of the block outside the third pile body 22 facing the bottom end of the third pile body 22 is perpendicular to an axis of the third pile body 22.
Example 5
Referring to fig. 8 and 9, the present embodiment is different from embodiment 1 in that the first pile row 2 includes a plurality of first pile bodies 21 and a plurality of obliquely arranged fourth pile bodies 32, the plurality of the first pile bodies is at least three, the bottom end of the fourth pile body 32 is obliquely arranged toward the foundation pit or obliquely arranged away from the foundation pit, the first pile bodies 21 and the fourth pile bodies 32 are alternately arranged along the arrangement direction of the first pile row 2, and no larsen steel sheet pile 5 is arranged on the first pile row 2, a portion of the first crown beam 11 that is cast and fixed outside the fourth pile body 32 is also set as a block, and a side wall of the block outside the fourth pile body 32 that faces the bottom end of the fourth pile body 32 is perpendicular to an axis of the fourth pile body 32.
Example 6
Referring to fig. 10, the difference between this embodiment and embodiment 1 is that the first pile row 2 surrounds the foundation pit, the second pile row 3 surrounds the first pile row 2, and the second pile body 31 is inclined toward the direction away from the foundation pit.
The embodiment of the application also discloses a construction method of the foundation pit support, which comprises the following steps:
1) measuring and positioning, and determining the position: selecting the positions of the first pile row 2 and the second pile row 3 at the edge position of the foundation pit according to the actual size of the foundation pit, so that the support can effectively support the soil body on the side surface of the foundation pit when the foundation pit is excavated, and the soil body on the side surface of the foundation pit is not easy to collapse;
2) firstly driving a first pile body 21 and a third pile body 22 at corresponding positions through a pile driver, and then driving a second pile body 31 and a fourth pile body 32;
referring to fig. 11, a positioning frame is mounted at a corresponding position, positions of the first pile body 21, the second pile body 31, the third pile body 22 and the fourth pile body 32 are positioned by the positioning frame, and driving accuracy is controlled.
Referring to fig. 12 and 13, the positioning frame includes a frame body, the frame body includes a fixed frame 7 and an adaptive frame installed on the fixed frame 7, the fixed frame 7 is a steel frame structure, two rows of installation holes 71 are formed inside the fixed frame 7, and one adaptive frame is installed at the position of each installation hole 71.
Referring to fig. 13 and 14, a plurality of fixing posts 72 are integrally fixed to a sidewall of the fixed frame 7 facing the ground, the fixing posts 72 are vertically inserted into the ground for fixing the fixed frame 7 to the ground, and the plurality of fixing posts 72 are arranged along a frame of an outermost ring of the fixed frame 7.
Referring to fig. 13 and 14, a plurality of inclined holes 73 are formed in the fixing frame 7, the inclined holes 73 are obliquely arranged, inclined rods 74 penetrate through the inclined holes 73 in a one-to-one correspondence manner, a limiting inclined hole 75 is formed in one end of the fixing column 72, which is far away from the fixing frame 7, one end of each inclined rod 74 is inserted into the ground and penetrates through the limiting inclined hole 75, a limiting plate 741 is arranged at one end of each inclined rod 74, which is located at the upper portion of the fixing frame 7, the inclined holes 73 are stepped holes, so that the limiting plate 741 can be embedded into the inclined holes 73, threaded holes are coaxially formed in the limiting plate 741 for pulling the inclined rods 74, a penetrating hole 76 through which the limiting plate 741 passes is further formed in the fixing frame 7, a penetrating groove 77 is further formed in the fixing frame 7, the penetrating hole 76 and the inclined hole 73 are communicated through the penetrating groove 77, so that the fixing frame 7 can be vertically pulled out and the inclined rods 74 can be partially inserted into the ground after being partially pulled out.
Referring to fig. 13 and 15, the adapting frame has two types, namely a vertical frame 8 and an inclined frame 9, the vertical frame 8 is in a flat plate shape, a positioning hole 81 is vertically formed in the middle of the vertical hole, the fixing frame 7 is integrally provided with an annular protrusion 78 outside the mounting hole 71, a circle of limiting flange 82 is arranged on the outer edge of the vertical frame 8, and the limiting flange 82 is sleeved outside the annular protrusion 78 and fixed by screws.
Referring to fig. 13 and 15, the inclined frame 9 is in a right-angled triangular prism shape, the inclined surface of the inclined frame 9 is provided with a positioning hole 81 in an inclined manner, the axis of the positioning hole 81 on the inclined frame 9 is perpendicular to the inclined surface, one side wall of the inclined frame 9 is also provided with a circle of limiting flange 82 which is sleeved outside the annular protrusion 78 for screw fixation, the inclined frame 9 has multiple types according to different inclined angles required by the pile, and the inclined angles of the positioning holes 81 on different inclined frames 9 are different.
Referring to fig. 12 and 15, two sides of each adaptive frame are respectively provided with a limiting sliding groove 83 and a limiting sliding rail 84, and adjacent adaptive frames are fixed by the limiting sliding rails 84 and the limiting sliding grooves 83 in a related manner.
According to the arrangement condition of the first pile body 21, the second pile body 31, the third pile body 22 and the fourth pile body 32 on the support to be built, the corresponding inclined frame 9 and the vertical frame 8 are installed in each installation hole 71, the inclined frame 9 and the vertical frame 8 can be optionally selected to be filled at the position where the pile is not needed to be installed, then all the first pile body 21 and the third pile body 22 are driven in, and then all the second pile body 31 and the fourth pile body 32 are driven in.
Finally, the adaptive frames are taken down, the inclined rods 74 are partially pulled out, the limiting plates 741 are located above the through holes 76 and correspond to the through holes 76, the fixed frame 7 is pulled out, and then the Larsen steel sheet piles 5 are inserted.
3) The crown beam 1 is poured and formed at the periphery of the foundation pit through the template, the inclined rods 74 are poured and fixed in the crown beam 1 together to serve as frameworks of the crown beam 1, the strength of the crown beam 1 is improved, the inclined rods 74 are uniformly distributed, the strength of the crown beam 1 is kept consistent, and compared with the mode that the frameworks of the similar inclined rods 74 are installed again through measuring intervals, the method is more convenient.
4) Treating the foundation pit;
4.1), excavating the earth;
4.2), constructing a basement;
4.3), backfilling;
5) and crushing the crown beam 1, and pulling out the first pile body 21, the second pile body 31, the third pile body 22 and the fourth pile body 32 to realize the recycling of the first pile row 2 and the second pile row 3.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (1)
1. A construction method of a foundation pit support is characterized by comprising the following steps: the pile comprises a first pile row (2) and a second pile row (3) which are arranged in parallel, wherein the first pile row (2) is of a close-packed pile structure; the second pile row (3) is of a close-packed pile structure or a sparse pile structure;
the first pile row (2) comprises at least one first pile body (21) which is vertically arranged;
the second pile row (3) comprises at least one second pile body (31) which is arranged obliquely;
the top end of the first pile row (2) is fixed to the crown beam (1), and the top end of the second pile row (3) is fixed to the crown beam (1);
the top end of the first pile row (2) is fixed to the first top beam (11), the top end of the second pile row (3) is fixed to the second top beam (12), the connecting beam (13) is located between the first top beam (11) and the second top beam (12), one end of the connecting beam (13) is fixed to the first top beam (11), and the other end of the connecting beam (13) is fixed to the second top beam (12);
the second pile row (3) further comprises a plurality of third pile bodies (22) which are vertically arranged, the number of the second pile bodies (31) is multiple, and the second pile bodies (31) and the third pile bodies (22) are alternately arranged along the arrangement direction of the second pile row (3);
the first pile row (2) further comprises a plurality of fourth pile bodies (32) which are obliquely arranged, the number of the first pile bodies (21) is multiple, and the first pile bodies (21) and the fourth pile bodies (32) are alternately arranged along the arrangement direction of the first pile row (2);
the method comprises the following steps:
1) and measuring and positioning: determining a position;
2) and piling: according to the arrangement mode of the first pile row (2) and the second pile row (3), a first pile body (21), a second pile body (31), a third pile body (22) and a fourth pile body (32) are driven at various positions through a pile driver;
before piling, the position is determined through a positioning frame, the positioning frame comprises a frame body, the frame body is provided with positioning holes (81) for inserting a first pile body (21), a second pile body (31), a third pile body (22) and a fourth pile body (32), the frame body is also provided with fixing columns (72), and the fixing columns (72) are inserted into the ground;
3) pouring and molding a crown beam (1) at the periphery of the foundation pit through a template;
the frame body comprises a fixed frame (7) and an adaptive frame, the fixed column (72) is arranged on the fixed frame (7), the positioning hole (81) is arranged on the adaptive frame, the adaptive frame comprises a vertical frame (8) and an inclined frame (9), four sides of the vertical frame (8) are detachably connected with the fixed frame (7), the positioning hole (81) on the inclined frame (9) is obliquely arranged, the inclined frame (9) is detachably connected with the fixed frame (7), two sides of the adaptive frame are respectively provided with a limiting sliding groove (83) and a limiting sliding rail (84), the adjacent adaptive frame is matched with the limiting sliding groove (83) through the limiting sliding rail (84) for positioning and installation, in the step 2), the driving of all vertically arranged piles is completed firstly, and then the driving of the obliquely arranged piles is performed;
the fixing frame (7) is provided with a plurality of inclined holes (73), the inclined holes (73) are obliquely arranged, inclined rods (74) correspondingly penetrate through the inclined holes (73) one by one, one end, far away from the fixing frame (7), of the fixing column (72) is provided with a limiting inclined hole (75), one end of each inclined rod (74) is inserted into the ground and penetrates through the limiting inclined hole (75), one end, located at the upper portion of the fixing frame (7), of each inclined rod (74) is provided with a limiting plate (741), the fixing frame (7) is provided with a penetrating hole (76) through which the limiting plate (741) penetrates, the fixing frame (7) is further provided with a penetrating groove (77), and the penetrating groove (77) is communicated with the penetrating hole (76) and the inclined holes (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110070444.2A CN112962614B (en) | 2021-01-19 | 2021-01-19 | Foundation pit support and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110070444.2A CN112962614B (en) | 2021-01-19 | 2021-01-19 | Foundation pit support and construction method thereof |
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| Publication Number | Publication Date |
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| CN112962614A CN112962614A (en) | 2021-06-15 |
| CN112962614B true CN112962614B (en) | 2022-04-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101266162B1 (en) * | 2010-06-29 | 2013-05-21 | 엘에스씨산업기술 주식회사 | Retaining method using two rows pile and connector of two rows pile for the same |
| CN111119199A (en) * | 2020-01-16 | 2020-05-08 | 上海市政工程设计研究总院（集团）有限公司 | A-shaped double-row pile foundation pit supporting structure and construction method thereof |
| CN111501774A (en) * | 2020-04-13 | 2020-08-07 | 中建三局集团有限公司 | Supporting system for front row inclined double-row piles and construction method thereof |
| CN214940187U (en) * | 2021-01-19 | 2021-11-30 | 宁波市建筑设计研究院有限公司 | Foundation pit support |
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Denomination of invention: A Foundation Pit Support and Its Construction Method Effective date of registration: 20230713 Granted publication date: 20220426 Pledgee: Bank of Ningbo Co.,Ltd. Yinzhou Central District Sub branch Pledgor: NINGBO ARCHITECTURAL DESIGN AND RESEARCH INSTITUTE Co.,Ltd. Registration number: Y2023980048369 |