Concrete-filled steel tube cantilever type retaining wall
By using steel pipe concrete structure and support structure columns to connect vertical wall panels and toe plates in the cantilever retaining wall, the problem of insufficient rigidity and deformation resistance of the cantilever retaining wall is solved, achieving higher overturning stability and lower engineering cost.
Patent Information
- Application Number
- CN202420750498.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The existing cantilever retaining walls have poor stiffness and deformation resistance, resulting in increased engineering cost, reduced economic efficiency, and increased construction difficulty.
The steel pipe concrete cantilever retaining wall structure is adopted, and the vertical wall panel and toe plate are connected through supporting structural columns to disperse the soil pressure, improve the anti-population stability, and reduce the use of steel bars through prefabricated steel pipe concrete columns.
The overall stiffness and deformation resistance of the cantilever retaining wall are improved, the engineering cost is reduced, and the construction process is simplified.
Smart Images
Figure CN222701036U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engineering protection, in particular to a steel tube concrete cantilever retaining wall. Background Art
[0002] As a commonly used lightweight retaining structure, cantilever retaining wall has the characteristics of simple structure, convenient construction, small wall section and light weight. It is widely used in foundations with low bearing capacity and is often used in projects such as fill slopes and roadbed slopes.
[0003] At present, cantilever retaining walls are generally reinforced concrete structures, which usually have the following problems:
[0004] 1. The rigidity and anti-deformation ability are poor. Especially as the height of the retaining wall increases, the design requirements can only be met by increasing the cross-sectional size of the retaining wall, which leads to an increase in the project cost and a decrease in economic efficiency. Therefore, the height of the cantilever retaining wall generally does not exceed 6m;
[0005] 2. The economic cost of the reinforcement structure is relatively high. In order to improve the stiffness and deformation resistance of the cantilever retaining wall, most of them are done by adding a buttress between the vertical wall plate and the heel plate of the cantilever retaining wall at a certain interval. However, since the buttress is arranged on the facing surface of the retaining wall, it is mainly in a tensile stress state. Therefore, a large number of tensile steel bars are often required in the design process. This method reduces the economic efficiency of the support measures and increases the construction difficulty to a certain extent. Utility Model Content
[0006] The technical problem to be solved by the utility model is: to provide a steel tube concrete cantilever retaining wall in view of the above-mentioned existing problems.
[0007] The technical solution adopted by the utility model is: a steel tube concrete cantilever retaining wall, characterized in that it includes:
[0008] The vertical wall plate has a toe plate connected to the bottom of the soil-facing surface and a heel plate connected to the bottom of the soil-repelling surface;
[0009] The supporting structure column has a first end connected to the wall surface of the vertical wall plate facing the soil, and a second end connected to the top of the toe plate. The supporting structure columns are arranged at intervals along the extension direction of the vertical wall plate.
[0010] Through the above technical means, the two ends of the supporting structure column are respectively connected to the soil surface of the vertical wall plate and the top of the toe plate. The support structure column is used to improve the anti-overturning stability of the toe plate and reduce the overall structural base stress. The supporting structure column also has good strength and bearing capacity for the vertical wall plate. With the help of the supporting structure column, the load on the vertical wall plate can be effectively shared, thereby reducing the deformation of the vertical wall plate, so that the supporting structure column can provide sufficient support and rigidity for the vertical wall plate; at the same time, the supporting structure columns are arranged at intervals along the extension direction of the vertical wall plate. Compared with the buttress structure, the use of steel bars can be greatly reduced, thereby reducing the economic cost of support.
[0011] In some embodiments, a cap beam is connected to the wall surface of the vertical wall panel facing the soil, a cross beam is connected to the top of the toe plate, the first end of the supporting structure column extends into and is connected to the cap beam, and the second end of the supporting structure column extends into and is connected to the cross beam.
[0012] In some embodiments, the height of the vertical wall plate is H, and the crown beam is arranged at the vertical wall plate. At a certain height, the connection between the crown beam and the vertical wall plate is reinforced with steel bars to prevent local shear failure at the connection.
[0013] In some embodiments, the cross beam is arranged at the outer edge of the top of the toe plate, and the connection between the cross beam and the toe plate is reinforced with steel bars to prevent local shear failure at the connection.
[0014] In some embodiments, the cross-sections of the crown beam and the cross beam are both right-angled trapezoidal.
[0015] In some embodiments, the supporting structure column is a steel tube concrete column, which is a prefabricated component, and the ends of the steel tube concrete column are connected by inserting reinforcement.
[0016] In some embodiments, the plurality of support structure columns are arranged in parallel, and the plurality of support structure columns are arranged at equal intervals or at different intervals according to load conditions to ensure uniform force.
[0017] The beneficial effects of the utility model are:
[0018] 1. The two ends of the multiple supporting structure columns are connected to the vertical wall plate and the toe plate respectively. With the help of the supporting structure columns, the soil pressure can be dispersed and resisted. Compared with the traditional cantilever retaining wall structure, the anti-overturning stability of the toe plate connected by the supporting structure columns is improved to a certain extent, and the base stress of the overall structure is reduced. Through the coordination of the supporting structure columns with the vertical wall plate and the toe plate, the stiffness and deformation resistance of the overall structure are effectively improved.
[0019] 2. The supporting structure columns adopt prefabricated steel tube concrete columns. On the one hand, due to the combined effect of steel tube and concrete, the steel tube can restrain the deformation of concrete, so that the steel tube concrete column has good rigidity. At the same time, the steel tube concrete column has good compressive resistance and can resist deformation to a certain extent. By arranging the steel tube concrete column between the vertical wall plate and the toe plate, the steel tube concrete column can effectively share the load of the vertical wall plate and reduce its deformation. On the other hand, the steel tube concrete column is prefabricated in advance, which is convenient for construction and improves construction efficiency.
[0020] 3. By arranging steel tube concrete columns at intervals along the extension direction of the vertical wall plate, the steel tube concrete column structure greatly reduces the amount of steel bars used compared to the buttress structure, thereby effectively reducing the project cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the structure of this application.
[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of this application.
[0023] Description of reference numerals:
[0024] 1. Wall board; 2. Toe board; 3. Heel board; 4. Crown beam; 5. Cross beam; 6. Supporting structure column.
[0025] This specification includes references to "one embodiment" or "an embodiment." The appearance of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. The particular features, structures or characteristics may be combined in any suitable manner consistent with the present disclosure.
[0026] The term "comprising" is open ended. As used in the appended claims, the term does not exclude additional structures or steps.
[0027] "First," "second," etc. As used herein, these terms act as labels for the nouns that precede them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). DETAILED DESCRIPTION
[0028] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below in conjunction with specific embodiments.
[0029] Embodiment 1:
[0030] Combination Figure 1 to Figure 2As shown, this embodiment is a steel tube concrete cantilever retaining wall, including a vertical wall plate 1 and a supporting structure column 6. The bottom of the vertical wall plate 1 facing the soil is connected to a toe plate 2, and the bottom of the vertical wall plate 1 facing the soil is connected to a heel plate 3. The first end of the supporting structure column 6 is connected to the wall surface of the vertical wall plate 1 facing the soil, and the second end of the supporting structure column 6 is connected to the top of the toe plate 2, and the supporting structure columns 6 are arranged at intervals along the extension direction of the vertical wall plate 1.
[0031] In some embodiments, a cap beam 4 is connected to the wall surface of the vertical wall panel 1 facing the soil, and the height of the wall panel 1 is set to H. The cap beam 4 is arranged on the vertical wall panel 1. At a certain height, the connection between the crown beam 4 and the vertical wall plate 1 is reinforced with steel bars to prevent local damage at the connection; the top of the toe plate 2 is connected with a crossbeam 5, specifically, the crossbeam 5 is arranged at the outer edge of the toe plate 2, and the connection between the crossbeam 5 and the toe plate 2 is reinforced with steel bars to prevent local shear damage at the connection; the first end of the supporting structure column 6 extends into the crown beam 4 and is connected thereto, and the second end of the supporting structure column 6 extends into the crossbeam 5 and is connected thereto, thereby forming a whole.
[0032] Furthermore, the cross sections of the top beam 4 and the cross beam 5 are both right-angled trapezoidal.
[0033] In some embodiments, the supporting structure column 6 is a steel tube concrete column, which is a prefabricated component. The first end of the steel tube concrete column is connected to the crown beam 4 by inserting reinforcement, and the second end of the steel tube concrete column is connected to the cross beam 5 by inserting reinforcement. Multiple steel tube concrete columns are arranged in parallel, and multiple steel tube concrete columns are arranged at equal intervals or at different intervals according to load conditions to ensure uniform force.
[0034] Embodiment 2:
[0035] This embodiment is a construction method of a steel tube concrete cantilever retaining wall, comprising the following steps:
[0036] S1. Excavate or backfill foundation soil to the designed elevation according to the design plan;
[0037] S2, the bottom plate of the construction structure, according to the design plan, first install the template of the bottom toe plate 2 and the heel plate 3, the bottom plate steel bar extends into the vertical wall plate 1, and the vertical wall plate 1 is connected with the bottom toe plate 2 and the heel plate 3 into a whole; the dowel bar is reserved at the connection position between the top outer edge of the toe plate 2 and the cross beam 5, and the dowel bar is encrypted according to the design;
[0038] S3, construct the vertical wall plate 1 of the structure, after the concrete strength of the bottom plate reaches the design standard, install the template of the vertical wall plate 1, reserve dowel bars at the connection between the vertical wall plate 1 and the crown beam 4, increase the dowel bars according to the design, and then pour the concrete, and remove the template after the concrete strength reaches the design standard;
[0039] S4. Prefabrication of steel tube concrete columns. Prefabricate steel tube concrete columns according to the design plan. Dowel bars need to be reserved at both ends of the steel tube concrete columns. After the concrete reaches the designed strength, it will be transported to the site for installation.
[0040] S5, installation of steel tube concrete columns and pouring of top beam 4 and cross beam 5. Fix the steel tube concrete columns at the corresponding positions according to the design plan, then install the formwork of cross beam 5 and top beam 4, pour concrete, and remove the formwork after the concrete reaches the designed strength;
[0041] S6. Backfill the slope at the back of the retaining wall according to the design plan.
[0042] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A steel tube concrete cantilever retaining wall, characterized in that: include: A vertical wall plate (1), the bottom of which faces the soil is connected to a toe plate (2), and the bottom of which faces away from the soil is connected to a heel plate (3); Support structure columns (6), a first end of which is connected to the wall surface of the vertical wall plate (1) facing the soil, and a second end of which is connected to the top of the toe plate (2), and the support structure columns (6) are arranged at intervals along the extension direction of the vertical wall plate (1); A crown beam (4) is connected to the wall surface of the vertical wall plate (1) facing the soil, a cross beam (5) is connected to the top of the toe plate (2), a first end of the support structure column (6) extends into and is connected to the crown beam (4), and a second end of the support structure column (6) extends into and is connected to the cross beam (5); The cross beam (5) is arranged at the outer edge of the top of the toe plate (2), and the connection between the cross beam (5) and the toe plate (2) is reinforced with steel bars to prevent local shear failure at the connection.
2. The steel tube concrete cantilever retaining wall according to claim 1, characterized in that: Assuming that the height of the vertical wall plate (1) is H, the crown beam (4) is arranged at the vertical wall plate (1). At a certain height, the connection between the crown beam (4) and the vertical wall plate (1) is reinforced with steel bars to prevent local shear failure at the connection.
3. The steel tube concrete cantilever retaining wall according to claim 1, characterized in that: The cross sections of the crown beam (4) and the cross beam (5) are both right-angled trapezoidal.
4. The steel tube concrete cantilever retaining wall according to claim 1, characterized in that: The supporting structure column (6) is a steel tube concrete column, which is a prefabricated component, and the ends of the steel tube concrete column are connected by inserting reinforcement.
5. The steel tube concrete cantilever retaining wall according to claim 1, characterized in that: The plurality of support structure columns (6) are arranged in parallel, and the plurality of support structure columns (6) are arranged at equal intervals or at different intervals according to load conditions, so as to ensure uniform force.