CN216238559U - Foundation pit enclosure construction device - Google Patents
Foundation pit enclosure construction device Download PDFInfo
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- CN216238559U CN216238559U CN202122758393.0U CN202122758393U CN216238559U CN 216238559 U CN216238559 U CN 216238559U CN 202122758393 U CN202122758393 U CN 202122758393U CN 216238559 U CN216238559 U CN 216238559U
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- wailing
- foundation pit
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Abstract
The utility model relates to a foundation pit enclosure construction device which comprises a cofferdam, wherein first enclosing wales, second enclosing wales and third enclosing wales are arranged in the cofferdam and are used for excavating different depths of soil underwater by installing the first enclosing wales, the second enclosing wales and the third enclosing jail, the distance between the first enclosing wales and an enclosing weir top is 3.35m, the interval between the second enclosing wales and the first enclosing wales is 5.63m, the interval between the third enclosing wales and the second enclosing wales is 5m, the first enclosing wales are provided with first inner supports, and the second enclosing wales and the third enclosing wales are provided with second inner supports and vertical supports; first wailing, second wailing and third wailing are installed, the cofferdam is effectively supported, meanwhile, the first wailing, the second wailing and the third wailing jail are detached layer by layer, construction of different processes is carried out in the cofferdam, orderly construction is guaranteed, and construction safety is improved.
Description
Technical Field
The utility model relates to the technical field of foundation pit construction, in particular to a foundation pit enclosure construction device.
Background
At present, the foundation pit enclosure is mainly developed and utilized in an underground space, and not only can the stability of the foundation pit and the safety and convenience of operation in the pit be ensured, but also the displacement of a soil body at the bottom of the pit and outside the pit is controlled within a certain range, and the normal use of adjacent buildings and municipal facilities is ensured.
The foundation pit enclosure is mostly applied to the construction of various underground buildings such as multi-layer basements, underground railways, underground commercial streets and the like, but is rarely applied to the yellow river, the river surface of the yellow river is wide, the water level is deep, the water flow is large, the covering layer of the silt and the clay of the river bed is thick, and the construction is difficult.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a foundation pit enclosure construction device.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a foundation pit enclosure construction device, including the cofferdam, be equipped with first wailing in the cofferdam, second wailing and third wailing, through installing first wailing, second wailing and third wailing jail, be used for excavating the earth of different degree of depth under water, first wailing is 3.35m apart from the distance of wailing top, second wailing is 5.63m with the interval of first wailing, third wailing is 5m with the interval of second wailing, first wailing is equipped with first inner support, second wailing and third wailing all are equipped with second inner support and vertical connection brace.
Preferably, the first inner support is provided with a first horizontal inclined strut and a first horizontal diagonal strut, the first horizontal diagonal strut is provided with a horizontal strut and a vertical strut, and the horizontal strut and the vertical strut are both provided with double-layer connection.
Preferably, the second horizontal diagonal brace and the second horizontal diagonal brace are arranged in the second inner support, the second horizontal diagonal brace is arranged transversely and vertically, and double-layer connection is arranged transversely and vertically.
Preferably, HN800 × 300H-shaped steel is adopted for the first wailing, the second wailing and the third wailing jail.
Preferably, the first horizontal diagonal brace is made of a phi 559 × 10 steel pipe, and the first horizontal diagonal brace is made of a phi 630 × 10 steel pipe.
Preferably, the second horizontal diagonal brace is made of a steel pipe with a diameter of 720 × 12, and the second horizontal diagonal brace is made of a steel pipe with a diameter of 920 × 15.
The utility model has the following beneficial effects: first wailing, second wailing and third wailing are installed, the cofferdam is effectively supported, meanwhile, the first wailing, the second wailing and the third wailing jail are detached layer by layer, construction of different processes is carried out in the cofferdam, orderly construction is guaranteed, and construction safety is improved.
Drawings
Fig. 1 is a schematic structural diagram (one) of the present invention.
Fig. 2 is a schematic structural diagram (ii) of the present invention.
In the figure: 1-cofferdam; 2-first wailing; 3-second wailing; 4-third wailing; 5-a first horizontal diagonal brace; 6-first horizontal counter bracing; 7-vertical connecting support.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the embodiment of the utility model, as shown in fig. 1-2, a foundation pit enclosure construction device comprises a cofferdam 1, first wales 2, second wales 3 and third wales 4 are arranged in the cofferdam 1, and the first wales 2, the second wales 3 and the third wales jail 4 are arranged to excavate soil at different depths under water, the distance between the first wales 2 and a wale top is 3.35m, the distance between the second wales 3 and the first wales 2 is 5.63m, the distance between the third wales jail 4 and the second wales 3 is 5m, the first wales 2 are provided with first inner supports, and the second wales and the third wales are provided with second inner supports and vertical connecting supports 7.
The first inner support is provided with a first horizontal inclined strut 5 and a first horizontal opposite strut 6, the first horizontal opposite strut 5 is provided with a transverse direction and a vertical direction, the transverse direction and the vertical direction are both provided with double-layer connection, the first horizontal inclined strut 5 adopts a phi 559 multiplied by 10 steel pipe, and the first horizontal opposite strut adopts a phi 630 multiplied by 10 steel pipe.
Second horizontal diagonal bracing and second level are arranged in the second inner support, the second level is horizontal and vertical to bracing, the horizontal and vertical are both provided with double-layer connection, the second horizontal diagonal bracing adopts a phi 720 × 12 steel pipe, the second level is to bracing adopts a phi 920 × 15 steel pipe, and first wailing 2, second wailing 3 and third wailing 4 all adopt HN800 × 300H-shaped steel.
The foundation pit adopts a locking steel pipe pile to carry out foundation pit protection, the pile length of the foundation pit is 33m, the main steel pipe adopts a phi 920 multiplied by 15mm spiral steel pipe, the locking steel pipe adopts a phi 219 multiplied by 10mm seamless steel pipe, and the locking pile adopts I32b I-steel. The plane size of the locking steel pipe pile cofferdam is 26.40 multiplied by 36.32m, and the depth of the cofferdam is 24.08m (from the top of the locking steel pipe pile to the bottom of the back cover concrete).
The construction method comprises the following steps: 1) inserting and driving the pipe piles, setting out the plane position of the steel pipe pile after the drilling platform is removed, drawing marking lines, and inserting and driving the steel pipe pile to close the pipe;
2) first wails 2 and first inner supports are installed in the cofferdam, the wails have the elevation of +33.95m, water injection and mud suction are carried out to 2m below a river bed after the wails are installed, and the wall is excavated to 27.3 m;
3) second wails 3, second inner supports and vertical connecting supports are installed, the height of the wails is plus 28.30m, water injection and mud absorption are performed for 5m after the wails are installed, and the wails are excavated to 22.3 m;
4) mounting a third enclosure jail 4, a second inner support and a vertical connecting support, wherein the height of the wails is plus 23.30m, the water returns 5m after mounting, and excavating for 9m underwater by using a suction dredge to reach 13.225 m;
5) pouring bottom sealing concrete with the thickness of 3m underwater, chiseling loose concrete on the surface after the strength of the bottom sealing concrete reaches the design requirement, and constructing a bearing platform;
6) binding reinforcing steel bars, supporting a formwork and pouring concrete on a bearing platform, wherein the bearing platform adopts a wood formwork, a square wood supporting pad is adopted between a steel pipe pile and the formwork, the bearing platform with the height of 5m is poured at one time, and after the pouring of the bearing platform is finished, the bearing platform concrete and the steel pipe pile are mutually extruded to bear force;
7) after the concrete of the bearing platform reaches the design strength, removing the inner support and wailing of the third layer, and constructing a tower base and a 3m pier body;
8) and filling coarse sand to 5.5m above the top of the bearing platform, and pouring C30 concrete with the thickness of 0.5m on the top surface. After the concrete reaches the design strength, the inner support and wailing on the second layer are dismantled;
9) constructing a pier body with the thickness of 5.65 m;
10) and returning water to 5.0m, removing the first-layer internal stay and wails, and constructing the rest pier body.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (6)
1. The foundation pit enclosure construction device is characterized by comprising a cofferdam, first enclosing, second enclosing and third enclosing are arranged in the cofferdam, the first enclosing, the second enclosing and the third enclosing are arranged, the first enclosing, the second enclosing and the third enclosing are jail, the device is used for excavating earth at different underwater depths, the distance between the first enclosing and the top of the enclosing is 3.35m, the interval between the second enclosing and the first enclosing is 5.63m, the interval between the third enclosing and the second enclosing is 5m, the first enclosing is provided with a first inner support, and the second enclosing and the third enclosing are provided with a second inner support and a vertical support.
2. A foundation pit support construction device according to claim 1, wherein the first inner support is provided with a first horizontal diagonal support and a first horizontal diagonal support, the first horizontal diagonal support is provided with a horizontal direction and a vertical direction, and the horizontal direction and the vertical direction are provided with double-layer connection.
3. A foundation pit support construction device according to claim 1, wherein the second inner support is provided with a second horizontal diagonal support and a second horizontal diagonal support, the second horizontal diagonal support is provided with a horizontal direction and a vertical direction, and the horizontal direction and the vertical direction are both provided with double-layer connection.
4. The foundation pit support construction device according to claim 1, wherein the first wailing, the second wailing and the third wailing jail are all HN 800X 300H-shaped steel.
5. A foundation pit support construction device according to claim 2, wherein the first horizontal diagonal brace is made of a steel pipe of phi 559 x 10, and the first horizontal diagonal brace is made of a steel pipe of phi 630 x 10.
6. A foundation pit support construction device according to claim 3, wherein the second horizontal diagonal brace is a steel pipe with a diameter of 720 x 12, and the second horizontal diagonal brace is a steel pipe with a diameter of 920 x 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122758393.0U CN216238559U (en) | 2021-11-11 | 2021-11-11 | Foundation pit enclosure construction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122758393.0U CN216238559U (en) | 2021-11-11 | 2021-11-11 | Foundation pit enclosure construction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216238559U true CN216238559U (en) | 2022-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122758393.0U Active CN216238559U (en) | 2021-11-11 | 2021-11-11 | Foundation pit enclosure construction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216238559U (en) |
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2021
- 2021-11-11 CN CN202122758393.0U patent/CN216238559U/en active Active
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