Energy-saving foundation with shallow excavation

Abstract

The utility model discloses a kind of shallow excavation energy-saving reinforcement foundation, it is related to foundation reinforcement structure technical field, the reinforcement foundation includes original independent foundation and vertical column arranged on the upper end of original independent foundation;Still include: two rear increase clamping beams, respectively arranged in the two sides of the vertical column;Two new independent foundations are correspondingly arranged at the two ends of the rear increase clamping beam, and are fixedly connected with two rear increase clamping beams;Vertical column adds haunch, is sleeved and fixed on vertical column, and is arranged above two the rear increase clamping beam, and the lower surface of vertical column adds haunch simultaneously crimps two rear increase clamping beams.The utility model shallow excavation energy-saving reinforcement foundation has strong foundation deformation coordination ability, and it is beneficial to construction in narrow space.

Description

Technical Field

[0001] This utility model relates to the field of foundation reinforcement structure technology, specifically a shallow excavation energy-saving reinforcement foundation. Background Technology

[0002] Foundation reinforcement is an important part of building reinforcement construction. In order to ensure that the bottom surfaces of the old and new foundations are level during the foundation reinforcement construction process, it is necessary to excavate to the original foundation bottom elevation before carrying out foundation reinforcement.

[0003] For example, a shallow excavation foundation reinforcement structure with announcement number CN214328944U includes an original independent foundation and a newly added raft foundation. The original independent foundation is either an original independent foundation or a strip foundation. The newly added raft foundation includes pins, foundation support beams, and foundation support raft slabs. The pins, foundation support beams, and foundation support raft slabs are all concrete beams with steel bars pre-reserved at both ends. Multiple pins are installed through the wall of the original independent foundation, and the pins are located 2 / 5 to 3 / 5 of the distance from the top of the wall of the original independent foundation. The multiple pins are arranged horizontally in a row. The foundation support beams are located on both sides of the original independent foundation and are tied together with the multiple pins by steel bars. The foundation support raft slabs are located on both sides of the foundation support beams and are tied together with the foundation support beams by steel bars. The foundation support raft slabs are replaced with compacted backfill soil as the bearing layer below the foundation support raft slabs.

[0004] While the aforementioned patented technology can reduce the excavation depth, lower safety risks, and shorten the foundation excavation period while ensuring foundation reinforcement requirements, in actual application, due to differences in burial depth, the bearing capacity of the newly added raft foundation differs from that of the original foundation, making it impossible to achieve foundation deformation coordination. Furthermore, the large area of ​​the raft foundation is not conducive to construction in confined spaces. Utility Model Content

[0005] The purpose of this utility model is to provide a shallow excavation energy-saving reinforced foundation to solve the problems of poor foundation deformation coordination ability and unfavorable construction in narrow spaces in existing foundation reinforcement structures.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A shallow excavation energy-saving reinforced foundation includes an original independent foundation and a vertical column located at the top of the original independent foundation; characterized in that it further includes: Two additional clamping beams are provided, one on each side of the vertical column; Two new independent foundations are provided, and the two new independent foundations are located at both ends of the rear-added clamping beams and are fixedly connected to the two rear-added clamping beams. A vertical column armhole is fitted and fixed on the vertical column and positioned above the two rear-mounted clamping beams. The lower surface of the vertical column armhole is simultaneously pressed against the two rear-mounted clamping beams.

[0007] Preferably, the vertical column has several screw holes inside, and each screw hole is fitted with a through screw. Both ends of the through screws extend to the outside of the vertical column and are inserted into the rear-mounted clamping beams on both sides.

[0008] Preferably, there are six or eight through screws, which are arranged in two groups with the top and bottom aligned and the left and right sides equidistant.

[0009] Preferably, a compaction grouting structure is provided below each of the two newly added independent foundations, and the compaction grouting structure covers the area of ​​the newly added independent foundations.

[0010] Preferably, the vertical column plus the armhole is a regular square frustum structure with a through hole at the center.

[0011] Preferably, the two additional beams sandwich vertical columns, and the two newly added independent foundations are symmetrically distributed about the vertical columns.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention avoids large-scale excavation, increases structural stability, reduces construction costs, preserves existing foundations, saves energy, allows for the construction of the superstructure while the foundation is being built, is energy-saving and environmentally friendly, reduces the reinforcement cycle of existing structures, and overcomes the problems of poor foundation deformation coordination and difficulty in construction in confined spaces in existing foundation reinforcement structures. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the shallow excavation energy-saving reinforced foundation of this utility model; Figure 2 This is a cross-sectional view of the internal structure of the shallow excavation energy-saving reinforced foundation of this utility model; Figure 3 This is a cross-sectional structural diagram of the shallow excavation energy-saving reinforced foundation of this utility model; Figure 4 This is a plan view of the shallow excavation energy-saving and reinforced foundation structure of this utility model; In the diagram: 1. Original independent foundation; 2. Vertical column; 3. Vertical column with haunch; 4. Added beam; 5. New independent foundation; 6. Through bolt; 7. Through bolt; 8. Compacted grouting structure; 9. Haunch reinforcement. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Please see Figure 1-4 This utility model provides one embodiment: a shallow excavation energy-saving reinforced foundation, including an original independent foundation 1 and a vertical column 2 installed on the upper end of the original independent foundation 1. It also includes: Two additional clamping beams 4 are provided, one on each side of the vertical column 2.

[0016] Two new independent foundations 5 are provided, and the two new independent foundations 5 are respectively located at both ends of the rear-added clamping beams 4 and are fixedly connected to the two rear-added clamping beams 4.

[0017] A vertical column haunch 3 is fitted and fixed on the vertical column 2 and positioned above two rear-mounted clamping beams 4. The lower surface of the vertical column haunch 3 is simultaneously pressed against the two rear-mounted clamping beams 4. The vertical column haunch 3 is equipped with haunch reinforcement 9 inside.

[0018] When in use, the original independent foundation 1 shares the bearing capacity of the existing foundation and bears the load together. The newly added independent foundation 5 is 0.5m below the first floor. The bearing capacity of the newly added independent foundation 5 is lower than that of the existing foundation. Therefore, it is necessary to use compaction grouting to make the bearing capacity of the foundation at the new foundation consistent with that of the original foundation. The added clamping beam 4 transfers the column load to the newly added independent foundation 5 through the clamping beam. The added clamping beam 4 is connected to the vertical column 2 by through bolts 7. Through bolts 7 have a higher bearing capacity and stronger deformation coordination ability than steel reinforcement. A vertical column armhole 3 is added upwards from the first floor level at a distance of -0.5m. Vertical column 2 and vertical column armhole 3 are fixedly connected to form a single unit. When vertical column 2 moves downwards, vertical column armhole 3 also moves downwards. Vertical column armhole 3 presses against the additional beam 4, which connects to the newly added independent foundation 5. Thus, vertical column armhole 3 can evenly distribute the upper load of the column onto the additional beam 4 and vertical column 2, improving the deformation coordination between vertical column 2 and the additional beam 4. Simultaneously, the connection between the two additional beams 4 and the two newly added independent foundations 5 facilitates construction in confined spaces and offers wide adaptability.

[0019] Please see Figure 3 The vertical column 2 has six screw holes 6 inside, arranged in two groups, upper and lower, aligned vertically and horizontally at equal intervals from left to right. Through screws 7 are installed inside the screw holes 6, with both ends of each through screw 7 extending to the outside of the vertical column 2 and inserted into the rear clamping beams 5 on both sides. The two rear clamping beams 4 clamp the vertical column 2, and the six screw holes 6 inside the vertical column 2 serve to position the assembly connection. Please refer to... Figure 4 A compaction grouting structure 8 is installed below each of the two newly added independent foundations 5. The compaction grouting structure 8 should ideally completely cover the area of ​​the newly added independent foundation 5. For example, in this embodiment, twenty-four compaction grouting structures 8 are installed. The compaction grouting structures 8 installed below each of the two newly added independent foundations 5 serve to enhance the strength of the foundation structure below the two newly added independent foundations 5. Please refer to [link / reference]. Figure 1 The vertical column armhole 3 adopts a regular square frustum structure with a through hole in the center. The vertical column armhole 3 is sleeved and fixed on the vertical column 2 to form an integral structure. Two rear-added clamping beams 4 clamp the vertical column 2. Two newly added independent foundations 5 are symmetrically distributed about the vertical column 2, so that when the vertical column 2 moves down, multiple components share and are subjected to force in a balanced manner.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A shallow excavation energy-saving reinforced foundation, comprising an original independent foundation (1) and a vertical column (2) disposed on the upper end of the original independent foundation (1); characterized in that, Also includes: Two additional clamping beams (4) are provided, one on each side of the vertical column (2); Two new independent foundations (5) are provided, and the two new independent foundations (5) are located at the two ends of the rear-added clamping beams (4) and are fixedly connected to the two rear-added clamping beams (4); The vertical column armhole (3) is fitted and fixed on the vertical column (2) and located above the two rear-added clamping beams (4). The lower surface of the vertical column armhole (3) is simultaneously pressed against the two rear-added clamping beams (4).

2. The shallow excavation energy-saving reinforced foundation according to claim 1, characterized in that: The vertical column (2) has several screw holes (6) inside. All screw holes (6) are equipped with through screws (7). Both ends of the through screws (7) extend to the outside of the vertical column (2) and are inserted into the rear clamping beams (4) on both sides.

3. The shallow excavation energy-saving reinforced foundation according to claim 2, characterized in that: The through screws (7) are provided in six or eight groups, and are arranged in two groups with the top and bottom aligned and the left and right sides equidistant.

4. The shallow excavation energy-saving reinforced foundation according to claim 1, characterized in that: A compaction grouting structure (8) is provided below each of the two newly added independent foundations (5), and the compaction grouting structure (8) covers the area of ​​the newly added independent foundations (5).

5. The shallow excavation energy-saving reinforced foundation according to claim 1, characterized in that: The vertical column plus armpit (3) is a regular square frustum structure with a through hole in the center.

6. The shallow excavation energy-saving reinforced foundation according to claim 1, characterized in that: The two additional beams (4) are clamped to the vertical column (2), and the two newly added independent foundations (5) are symmetrically distributed about the vertical column (2).

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