CN210827425U - Retaining wall type underground continuous wall structure - Google Patents
Retaining wall type underground continuous wall structure Download PDFInfo
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- CN210827425U CN210827425U CN201920642325.8U CN201920642325U CN210827425U CN 210827425 U CN210827425 U CN 210827425U CN 201920642325 U CN201920642325 U CN 201920642325U CN 210827425 U CN210827425 U CN 210827425U
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- wall
- underground continuous
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- guide wall
- crown beam
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Abstract
The utility model discloses a retaining wall type underground continuous wall structure, which comprises a guide wall, a foundation trench excavated around a foundation pit, a concrete wall body arranged in the foundation trench, a crown beam and a reinforcement cage pre-embedded in the concrete wall body; the guide wall comprises an oblique guide wall and a vertical guide wall; the section of the foundation trench is in an inverted trapezoid shape, and the foundation trench comprises an inclined trench wall arranged on one side facing the soil and a vertical trench wall arranged on the other side of the foundation pit; the inclined guide wall is arranged at the top of the inclined groove wall, and the vertical guide wall is arranged at the top of the vertical groove wall; the section of the crown beam is in an inverted trapezoid shape, the bottom of the crown beam is arranged at the top of the concrete wall body, and the top of the crown beam is flush with the ground. The structure sets up rationally, the practicality is strong, and the trench wall of the side facing the soil is the inclined plane when the underground continuous wall becomes the groove, can effectively avoid the cell wall among the underground continuous wall work progress to collapse. Because the groove wall is an inclined plane, the lateral water and soil pressure borne by the underground continuous wall can be effectively reduced, so that the reinforcement of the underground continuous wall is reduced, and the construction cost is effectively reduced.
Description
Technical Field
The utility model relates to an open cut foundation ditch construction field, especially a barricade formula underground continuous wall structure.
Background
Along with rapid development of economy and continuous improvement of urbanization level, underground space development is increasing day by day, subways, underground garages, underground shopping malls, comprehensive underground pipe galleries, underground roads and the like become the direction of domestic vigorous development at present, open cut method construction is the most common construction method, and underground continuous walls are one of the most common enclosure structures in the open cut method.
However, since the cast-in-place underground structure is manually poured on site, some defects and disadvantages are inevitable. The main problems are focused on: firstly, the groove wall is easy to collapse during the grooving construction of the underground continuous wall; second, the upright wall surface causes a large lateral earth pressure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a barricade formula underground continuous wall structure, poor stability, easy emergence collapse, upright type wall lead to the technical problem that side direction soil pressure is great, the atress performance is bad, the construction effect is poor when solving underground continuous wall grooving construction.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a retaining wall type underground continuous wall structure, which comprises a guide wall, a foundation trench excavated around a foundation pit, a concrete wall body arranged in the foundation trench, a crown beam and a reinforcement cage pre-embedded in the concrete wall body;
the guide wall comprises an oblique guide wall and a vertical guide wall;
the section of the foundation trench is in an inverted trapezoid shape, and the foundation trench comprises an inclined trench wall arranged on one side facing the soil and a vertical trench wall arranged on the other side of the foundation pit;
the inclined guide wall is arranged at the top of the inclined groove wall, and the vertical guide wall is arranged at the top of the vertical groove wall;
the section of the crown beam is in an inverted trapezoid shape, the bottom of the crown beam is arranged at the top of the concrete wall body, and the top of the crown beam is flush with the ground.
Furthermore, the top surface of the oblique guide wall is flush with the top surface of the vertical guide wall; the top surface of the oblique guide wall is higher than the ground.
Furthermore, the top surface of the concrete wall body is higher than the bottom surface of the oblique guide wall.
Furthermore, the inclination angle of the oblique guide wall is 5-10 degrees.
Furthermore, reinforcing steel bars are embedded in the crown beam.
Further, the height of the vertical guide wall is at least 300 mm.
Further, the crown beam is cast in place or prefabricated.
The beneficial effects of the utility model are embodied in:
1, the utility model provides a pair of barricade formula underground continuous wall structure, the structure sets up rationally, the practicality is strong, does not receive the restriction of foundation ditch degree of depth. When the underground continuous wall is grooved, the wall of the soil facing side groove is an inclined plane, so that the collapse of the groove wall in the construction process of the underground continuous wall can be effectively avoided.
2, the utility model provides a pair of barricade formula underground continuous wall structure because the cell wall is the inclined plane, can effectively reduce the side direction soil and water pressure that underground continuous wall bore to reduce underground continuous wall's arrangement of reinforcement, effectively reduce construction cost.
3, the stability is good, the stress performance is good, the construction effect is good, and the popularization value is good.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The primary objects and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Reference numerals: 1-concrete wall body, 2-crown beam, 3-oblique tank wall, 4-oblique guide wall, 5-vertical tank wall, 6-vertical guide wall and 7-ground.
Detailed Description
The technical solutions of the present invention are described in detail below by way of examples, which are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not for explaining the limitations of the technical solutions of the present invention.
The utility model provides a structure of barricade formula underground continuous wall adopts the inclined plane design at the earth even wall soil facing side, and the side direction soil and water pressure that can better solve the current stage continuous wall and bear is big, and underground continuous wall's arrangement of reinforcement is in large quantity, problem that construction cost is high. Specifically, the method comprises the following steps. As shown in fig. 1, the underground continuous wall structure comprises a guide wall, a foundation trench excavated around a foundation pit, a concrete wall 1 arranged in the foundation trench, a crown beam 2 and a reinforcement cage pre-embedded in the concrete wall 1; the guide walls comprise an oblique guide wall 4 and a vertical guide wall 6; the section of the foundation trench is in an inverted trapezoid shape, and the foundation trench comprises an inclined trench wall 3 arranged on one side facing the soil and a vertical trench wall 5 arranged on the other side of the foundation pit; the inclined guide wall 4 is arranged at the top of the inclined groove wall 3, and the vertical guide wall 6 is arranged at the top of the vertical groove wall 5; the section of the crown beam 2 is inverted trapezoid, the bottom of the crown beam 2 is arranged at the top of the concrete wall 1, and the top of the crown beam 2 is flush with the ground 7.
Referring further to fig. 1, the top surface of the concrete wall 1 is higher than the bottom surface of the inclined guide wall 4. The underground continuous wall structure is arranged on the outer side of the foundation pit to be excavated in the circumferential direction. The inclined angle of the inclined guide wall 4 is: 5-10 degrees.
The concrete construction steps of the retaining wall type underground continuous wall structure are as follows:
the method comprises the following steps: and before the groove section is excavated, constructing a guide wall along the longitudinal axis of the continuous wall, and pouring concrete in situ.
Step two: excavating a foundation trench by using a trenching machine, and performing slurry wall protection;
the section of the foundation trench is inverted trapezoid, and the foundation trench comprises an oblique trench wall 3 arranged on the soil facing side, an oblique guide wall 4 arranged at the top of the oblique trench wall 3, a vertical trench wall 5 arranged on one side of the foundation pit and a vertical guide wall 6 arranged at the top of the vertical trench wall 5; the height of the vertical guide wall 6 is preferably that the wall foot enters into undisturbed soil which is not less than 300 mm.
Step three: binding the reinforcement cage of the ground connecting wall, and hoisting the reinforcement cage into the foundation trench;
step four: carrying out underwater pouring on the diaphragm wall concrete;
step five: constructing a top crown beam 2 of the underground continuous wall; the section of the crown beam 2 is inverted trapezoid, the bottom of the crown beam 2 is arranged at the top of the concrete wall 1, and the top of the crown beam 2 is flush with the ground 7. The slant guide wall 4 is added according to the actual inclination angle on the inverted trapezoidal foundation trench, so that the soil close to the earth surface can be well fixed, and the collapse phenomenon is prevented. During actual construction, the crown beam 2 can be cast in place or prefabricated.
Step six: and (5) carrying out foundation pit excavation supporting.
The utility model provides a barricade formula underground continuous wall structure overcomes the defect that current underground continuous wall construction grooving collapses easily, provides a grooving easily, and the atress performance is good and have the novel way of doing things of underground continuous wall of better construction effect. The retaining wall type underground continuous wall forms an oblique slope surface when grooving on the soil facing side, and the underground continuous wall reinforcement cage is placed downwards and cast in situ to form the retaining wall type underground continuous wall, so that the risk of collapse of the wall of the groove can be reduced, and the lateral load borne by the underground continuous wall is reduced.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be considered by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (7)
1. The utility model provides a retaining wall formula underground continuous wall structure which characterized in that: the underground continuous wall structure comprises a guide wall, a foundation trench excavated around a foundation pit, a concrete wall body (1) arranged in the foundation trench, a crown beam (2) and a reinforcement cage pre-embedded in the concrete wall body (1);
the guide wall comprises an oblique guide wall (4) and a vertical guide wall (6);
the section of the foundation trench is in an inverted trapezoid shape, and the foundation trench comprises an inclined trench wall (3) arranged on one side facing the soil and a vertical trench wall (5) arranged on the other side of the foundation pit;
the inclined guide wall (4) is arranged at the top of the inclined groove wall (3), and the vertical guide wall (6) is arranged at the top of the vertical groove wall (5);
the section of the crown beam (2) is inverted trapezoid, the bottom of the crown beam (2) is arranged at the top of the concrete wall body (1), and the top of the crown beam (2) is flush with the ground (7).
2. The retaining wall type underground continuous wall structure according to claim 1, wherein the top surface of the inclined guide wall (4) is flush with the top surface of the vertical guide wall (6); the top surface of the oblique guide wall (4) is higher than the ground (7).
3. The retaining wall type underground continuous wall structure according to claim 1, wherein the inclined guide wall (4) has an inclination of 5 to 10 °.
4. A retaining wall type underground continuous wall structure according to claim 1, wherein the top surface of the concrete wall body (1) is higher than the bottom surface of the inclined guide wall (4).
5. The retaining wall type underground continuous wall structure according to claim 1, wherein the crown beam (2) is embedded with reinforcing steel bars.
6. A retaining wall type underground continuous wall structure according to claim 1, wherein the crown beam (2) is cast in place or prefabricated.
7. A retaining wall type underground continuous wall structure according to claim 1, wherein the height of the vertical guide wall (6) is at least 300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920642325.8U CN210827425U (en) | 2019-05-07 | 2019-05-07 | Retaining wall type underground continuous wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920642325.8U CN210827425U (en) | 2019-05-07 | 2019-05-07 | Retaining wall type underground continuous wall structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210827425U true CN210827425U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920642325.8U Expired - Fee Related CN210827425U (en) | 2019-05-07 | 2019-05-07 | Retaining wall type underground continuous wall structure |
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| Country | Link |
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| CN (1) | CN210827425U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419048A (en) * | 2022-08-01 | 2022-12-02 | 上海建工集团股份有限公司 | Inclined underground continuous wall structure and construction method thereof |
-
2019
- 2019-05-07 CN CN201920642325.8U patent/CN210827425U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419048A (en) * | 2022-08-01 | 2022-12-02 | 上海建工集团股份有限公司 | Inclined underground continuous wall structure and construction method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200623 Termination date: 20210507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |