Combined inclined throwing support foundation pit supporting structure
By combining the inclined bracing structure with waterproof design, the problems of water leakage and construction safety hazards caused by the inclined bracing of large-diameter steel round pipes were solved, achieving efficient and economical foundation pit support.
Patent Information
- Application Number
- CN202320813641.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-04-13
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2033-04-13
AI Technical Summary
In existing technologies, using large-diameter steel pipes as inclined supports during foundation pit support construction can easily cause water leakage and cracks in underground structures, and the removal process poses safety hazards to subsequent construction.
A combined inclined bracing structure is adopted, including round tube inclined bracing and I-shaped inclined bracing, which are connected by connecting components. Waterproof structures such as waterstops and waterproof surfaces are set at the enclosure walls to ensure the stability of the construction process and the waterproof effect.
It improved construction efficiency, reduced construction costs, reduced steel usage, enhanced structural stability, effectively prevented water leakage in underground structures, and ensured construction safety.
Smart Images
Figure CN223893381U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to foundation pit support structures. Background Technology
[0002] With the rapid development of urban construction and the continuous increase in construction scale in my country, large buildings generally need to have foundation pits dug before construction. During the construction process, the foundation pits can affect the safety of the building and the surrounding environment, and may cause problems such as road surface cracking around the foundation pit and water leakage caused by underground pipe breakage, threatening people's lives and property.
[0003] Currently, in many inclined bracing construction projects, large-diameter steel round pipes are commonly used as inclined braces. Inclined bracing support structures are considered a good solution in foundation pit support technology and are typically applied to foundation pits with shallow excavation depths, irregular shapes, and complex surrounding environments. While they possess good compressive bearing capacity, their removal can have a significant adverse impact on the external walls of the underground structure, increasing the difficulty of subsequent underground structure construction and easily causing problems such as water leakage and cracks in the external walls. Summary of the Invention
[0004] In the construction of foundation pit support, the existing technology usually uses large-diameter steel round pipes as inclined bracing to pass through the outer wall of the underground structure, which can easily cause technical problems such as water leakage and cracks in the underground structure. In order to solve the above technical problems, this utility model provides a combined inclined bracing foundation pit support structure technical solution.
[0005] The technical solution of this utility model is as follows: A combined inclined bracing foundation pit support structure includes: a first support, a second support, and a combined inclined bracing assembled between the first support and the second support. The combined inclined bracing includes a circular tube inclined bracing and an I-shaped inclined bracing, and the circular tube inclined bracing and the I-shaped inclined bracing are connected by connecting members.
[0006] Preferably, the connecting member includes a head plate and a plurality of reinforcing members fixed to the head plate.
[0007] Preferably, the plurality of reinforcing members are arranged at equal intervals along the circumference of the head plate.
[0008] Preferably, the plurality of reinforcing members are mounted vertically on the head plate.
[0009] Preferably, the first support is pre-embedded with a plurality of first support pre-embedded parts, and the circular tube inclined brace is equipped with a first support end plate. The first support and the circular tube inclined brace are fixedly connected through the first support pre-embedded parts and the first support end plate.
[0010] Preferably, the second support is pre-embedded with multiple second supports, and the I-shaped inclined brace is equipped with a second support end plate. The second support and the I-shaped inclined brace are fixedly connected through the second support pre-embedded parts and the second support end plate.
[0011] Preferably, the first support is fixedly connected to the foundation plate, and the foundation plate is equipped with a retaining wall for the I-shaped inclined bracing to pass through.
[0012] Preferably, the connection between the I-shaped inclined brace and the retaining wall is provided with a waterproof structure.
[0013] Preferably, the waterproof structure includes a waterstop and a waterproof surface layer, wherein the waterstop is assembled inside the enclosure wall, and the waterproof surface layer is installed at the connection between the enclosure wall and the I-shaped diagonal brace.
[0014] Preferably, the connection point is on the water-facing side of the retaining wall.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] Its combined inclined bracing structure is easy to install and dismantle, and can adapt to excavation support in various sites. Moreover, the I-shaped inclined bracing near the retaining wall replaces the original steel round pipe inclined bracing, which not only greatly saves steel and effectively reduces construction costs, but also improves construction efficiency.
[0017] Its connecting components include multiple reinforcing members, which are circumferentially and vertically installed on the end cap plate to balance the forces and facilitate bearing greater pressure.
[0018] Its foundation pit support is equipped with end plates and multiple embedded parts, which enable the combined inclined bracing to be stably connected to the support, allowing the overall support structure to bear greater pressure and improve the overall structural stability.
[0019] Its I-shaped inclined bracing passes through the retaining wall. After the inclined bracing is removed, it will not bring safety hazards or construction problems to the subsequent underground structure construction compared to the traditional steel round pipe inclined bracing.
[0020] The foundation pit support structure is equipped with a waterproof structure, including a waterstop and a waterproof surface layer. The waterstop is installed inside the retaining wall, which can not only provide internal waterproofing at the point where the I-shaped inclined brace penetrates the wall, but also provide support for the retaining wall during construction.
[0021] The waterproof layer is installed at the connection between the retaining wall and the I-shaped diagonal bracing, on the water-facing side of the retaining wall, which further improves the waterproofing effect of the underground structure.
[0022] This utility model's combined inclined support structure not only meets the support requirements of engineering construction, providing strong safety assurance and good economic benefits for foundation pit support engineering; it also solves the problem of underground structure leakage caused by the subsequent demolition of foundation pit support structure, and is equipped with a waterstop and waterproof surface layer to ensure the waterproof effect of the wall penetration part.
[0023] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description
[0024] The present invention will be further described below with reference to the accompanying drawings:
[0025] Figure 1 This is a schematic diagram of the installation of the circular pipe and I-shaped combined inclined bracing support structure for the foundation pit of this utility model.
[0026] Figure 2 This is a schematic diagram of the joint between the circular pipe inclined brace and the I-shaped inclined brace of the foundation pit of this utility model.
[0027] Figure 3 This is a schematic diagram of the installation of the waterstop plate in the foundation pit of this utility model, which is a combination of a circular pipe and an I-shaped inclined bracing support structure.
[0028] Figure 4 This is a schematic diagram of the first support of the circular pipe and I-shaped combined inclined bracing support structure for the foundation pit of this utility model.
[0029] Figure 5 This is a schematic diagram of the second support of the circular pipe and I-shaped combined inclined bracing support structure for the foundation pit of this utility model.
[0030] The annotations in the attached figures are explained as follows:
[0031] 1. First support, 1-1. First support end plate, 1-2. First support embedded part, 2. Second support, 2-1. Second support end plate, 2-2. Second support embedded part, 3. Circular pipe inclined brace, 4. I-shaped inclined brace, 5. Connecting component, 5-1. End plate, 5-2. Reinforcing component, 6. Foundation slab, 7. Enclosure wall, 8. Waterstop plate, 9. Waterproof surface layer, 10. Piling. Detailed Implementation
[0032] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.
[0033] In the following description, terms such as “inner,” “outer,” “upper,” “lower,” “left,” and “right” are used only to facilitate the description of the embodiments and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0034] like Figure 1 As shown, a combined inclined bracing foundation pit support structure in this embodiment includes a first support 1, a second support 2, and a combined inclined bracing assembled between the first support 1 and the second support 2. The combined inclined bracing includes a circular tube inclined bracing 3 and an I-shaped inclined bracing 4. The circular tube inclined bracing 3 and the I-shaped inclined bracing 4 are connected by a connecting member 5. The combined inclined bracing is easy to install and dismantle, can adapt to excavation support in various sites, and improves construction efficiency.
[0035] A top beam is installed on the top of the enclosure wall 7, which can support the enclosure wall 7 and make the overall structure more stable and safe.
[0036] The first support 1 is installed on the foundation slab 6 inside the foundation pit, and the second support 2 is installed on the inner wall retaining structure of the foundation pit outside the retaining wall 7. The inner wall retaining structure is supported by piles 10. The combined support system of piles and inclined bracing has relatively large rigidity and strong deformation control capability, making it suitable for many foundation pit excavation projects. It also helps to provide a larger working face for foundation pit excavation.
[0037] The end faces of the first support 1 and the second support 2 are parallel to each other. The two ends of the combined inclined bracing structure are perpendicularly connected to the end faces of the first support 1 and the second support 2. The center points of the first support embedded parts 1-2 and the second support embedded parts 2-2 of the first support 1 and the second support 2 are all through the center line of the inclined bracing support, ensuring that the direction of the compressive bearing force is flush with the center line of the inclined bracing support, so that the force is balanced and it is easy to bear greater pressure.
[0038] like Figure 2 As shown, the circular tube inclined brace 3 and the I-beam inclined brace 4 are interconnected by a connecting member 5 to form a whole. The connecting member 5 mainly consists of a head plate 5-1 and multiple reinforcing members 5-2. Multiple reinforcing members 5-2 are located at the end where the circular tube inclined brace 3 connects to the connecting member 5. The head plate 5-1 and the reinforcing members 5-2 are connected by end welding. The support centerlines of the circular tube inclined brace 3 and the I-beam inclined brace 4 must be collinear. The reinforcing members 5-2 in the connecting member 5 improve the stability of the combined inclined brace structure of the I-beam inclined brace 4 and the circular tube inclined brace 3, enabling the combined inclined brace structure to withstand greater pressure and improving the quality of the project.
[0039] like Figure 4 , Figure 5As shown, one end of the circular tube inclined brace 3 is connected to the connecting member 5, and the other end is connected to the first support 1 of the inclined brace located on the foundation plate 6. The circular tube inclined brace 3, the end plate 1-1 of the first support, and the embedded part 1-2 of the first support are welded one by one. The center point of the embedded part 1-2 of the first support coincides with the support center line of the circular tube inclined brace 3. This ensures the stability of the connection between the first support and the circular tube inclined brace, facilitates the uniform stress on its structure, and enables it to bear greater pressure.
[0040] One end of the I-shaped inclined brace 4 is connected to the connecting component 5, and the other end is connected to the second support 2 of the inclined brace located at the top of the retaining structure of the inner wall of the foundation pit. The I-shaped inclined brace 4, the end plate 2-1 of the second support, and the embedded part 2-2 of the second support are welded one-to-one. The center point of the embedded part 2-2 of the second support coincides with the support center line of the I-shaped inclined brace 4. This ensures the stability of the connection between the second support and the I-shaped inclined brace, facilitates the uniform stress on the structure, and enables it to bear greater pressure.
[0041] During the process of connecting the circular tube inclined brace 3 and the I-shaped inclined brace 4 through the connecting component 5, it is also necessary to ensure that the support center lines of the circular tube inclined brace 3 and the I-shaped inclined brace 4 are collinear, so that the structure is subjected to uniform stress and can bear greater pressure.
[0042] like Figure 3 As shown, the combined inclined bracing structure of the circular pipe and I-beam in the foundation pit also includes a waterproof surface layer 9 and a waterstop 8. The waterstop 8 is located inside the retaining wall 7 of the foundation pit and is coplanar with the vertical plane of the wall. It not only plays a supporting role, but also provides waterproofing for the I-beam inclined bracing 4 at the wall penetration point.
[0043] The I-shaped inclined brace 4 passes through the retaining wall 7, and a waterproof layer 9 is set on the water-facing side of the side that passes through the retaining wall 7. The waterproof layer 9 is on the cross-section of the I-shaped inclined brace 4. The construction method is simple and further improves the waterproof effect of the underground structure.
[0044] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.
Claims
1. A combined inclined bracing foundation pit support structure, comprising a first support (1), a second support (2), and a combined inclined bracing assembled between the first support (1) and the second support (2); characterized in that, The combined inclined bracing includes a circular tube inclined bracing (3) and an I-shaped inclined bracing (4); the circular tube inclined bracing (3) and the I-shaped inclined bracing (4) are connected by a connecting member (5).
2. The combined inclined bracing foundation pit support structure according to claim 1, characterized in that: The connecting member (5) includes a head plate (5-1) and a plurality of reinforcing members (5-2) fixed on the head plate (5-1).
3. The combined inclined bracing foundation pit support structure according to claim 2, characterized in that: The plurality of reinforcing members (5-2) are arranged at equal intervals along the circumference of the head plate (5-1).
4. The combined inclined bracing foundation pit support structure according to claim 2, characterized in that: The plurality of reinforcing members (5-2) are vertically mounted on the head plate (5-1).
5. The combined inclined bracing foundation pit support structure according to claim 1, characterized in that: The first support (1) is pre-embedded with a plurality of first support pre-embedded parts (1-2); the circular tube inclined brace (3) is equipped with a first support end plate (1-1); the first support (1) and the circular tube inclined brace (3) are fixedly connected by the first support pre-embedded parts (1-2) and the first support end plate (1-1).
6. The combined inclined bracing foundation pit support structure according to claim 1, characterized in that: The second support (2) is pre-embedded with multiple second support pre-embedded parts (2-2); the I-shaped inclined brace (4) is equipped with a second support end plate (2-1); the second support (2) and the I-shaped inclined brace (4) are fixedly connected by the second support pre-embedded parts (2-2) and the second support end plate (2-1).
7. The combined inclined bracing foundation pit support structure according to claim 5, characterized in that: The first support (1) is fixedly connected to the foundation plate (6), and the foundation plate (6) is equipped with a retaining wall (7) for the I-shaped inclined bracing (4) to pass through.
8. The combined inclined bracing foundation pit support structure according to claim 7, characterized in that: The connection between the I-shaped inclined brace (4) and the retaining wall (7) is provided with a waterproof structure.
9. A combined inclined bracing foundation pit support structure according to claim 8, characterized in that: The waterproof structure includes a waterstop (8) and a waterproof surface layer (9), wherein the waterstop (8) is assembled inside the enclosure wall (7), and the waterproof surface layer (9) is installed at the connection between the enclosure wall (7) and the I-shaped diagonal brace (4).
10. A combined inclined bracing foundation pit support structure according to claim 9, characterized in that: The connection point is on the water-facing side of the retaining wall (7).