Anti-settlement supporting system for construction elevator foundation in backfill soil area

Abstract

According to the anti-sedimentation supporting system for the construction elevator foundation in the backfill soil area, the concrete foundation is constructed on original soil of a foundation pit, the concrete column is constructed on the upper portion, vertical force transmission and transverse stability of the column are guaranteed, effective connection between the concrete beam and a main body structure is achieved through the pre-buried assembly, and the anti-sedimentation supporting system is suitable for construction of the elevator foundation in the backfill soil area. Therefore, a complete, stable and reliable supporting system built from the original soil of the foundation pit is integrally formed, an upper construction elevator foundation is effectively supported, and the problem that the construction elevator foundation in a backfill soil area is prone to sedimentation is more effectively solved. The foundation pit structure comprises a plurality of concrete columns arranged in a foundation pit, and a concrete foundation is arranged at the bottom of each concrete column; a transversely-distributed concrete beam is arranged at the top of the concrete column, one end of the concrete beam is used for being supported on the surface of an original road, and the other end of the concrete beam is connected to the outer wall of a main building through an embedded assembly.

Description

Technical Field

[0001] The utility model relates to the fields of building construction safety and technological innovation, and in particular to an anti-settling support system for an elevator foundation in a backfill area. Background Art

[0002] With the vigorous development of the construction industry, large-scale and difficult buildings emerge in an endless stream, and the corresponding demand for personnel and materials has also increased significantly. The use of large-scale construction machinery, such as tower cranes and construction elevators, has not only improved construction efficiency and created greater economic benefits, but also created a safe and comfortable working environment for operators, reducing the phenomenon of manual lifting and shouldering of materials. Construction elevators, as vertical transportation machinery for transporting personnel and materials, are indispensable in the construction process.

[0003] However, due to the construction space and construction conditions on site, the foundations of many construction elevators need to be located in the backfill soil around the foundation pit. Due to the construction quality of the backfill soil and subsequent rain erosion, the foundation of the construction elevator is prone to settlement, causing large deviations in the verticality of the guide rail frame and attachment of the construction elevator, which poses a great safety hazard to the normal operation of the construction elevator. In reality, the following two methods are often used to solve this problem:

[0004] 1. Grouting at the bottom of the foundation or re-compacting the foundation after demolition is time-consuming and labor-intensive, and it cannot completely solve the problem of foundation settlement of construction elevators in such areas, thus affecting the safe operation of construction elevators and failing to ensure the personal safety of construction workers.

[0005] 2. Before backfilling the foundation pit, concrete foundations, concrete columns, and concrete beams are constructed on the original soil, and tie beams are added in the middle of the columns to form a simple support system to support the upper construction elevator foundation. However, this system is not effectively connected to the main structure of the building, and the overall performance is poor. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an anti-settlement support system for the foundation of an elevator in a backfill area. The system constructs a concrete foundation on the original soil of the foundation pit and constructs concrete columns on the upper part to ensure the vertical force transmission and lateral stability of the columns. The concrete beams are effectively connected to the main structure through pre-embedded components, thereby forming a complete, stable and reliable support system built on the original soil of the foundation pit as a whole, effectively supporting the upper construction elevator foundation, thereby more effectively solving the problem of easy settlement of the construction elevator foundation in the backfill area, and further achieving the purpose of improving the safety of mechanical operation on the construction site and ensuring the personal safety of construction personnel.

[0007] The utility model is realized by the following technical solutions:

[0008] An anti-settling support system for an elevator foundation in a backfill area, comprising a plurality of concrete columns arranged in a foundation pit, each concrete column having a concrete foundation at the bottom;

[0009] A transversely distributed concrete beam is provided on the top of the concrete column, one end of the concrete beam is used to support the surface of the original road, and the other end is connected to the outer wall of the main building through a pre-embedded component.

[0010] Furthermore, at least one inclined concrete column is provided on the side of each concrete column.

[0011] Furthermore, a concrete foundation is provided at the bottom of the concrete inclined column.

[0012] Furthermore, the embedded component includes an embedded steel plate, which is fixed to the outer wall of the main building by a plurality of expansion bolts. The outer side surface of the embedded steel plate is provided with a plurality of reserved steel bars, and the reserved steel bars are connected as a whole with the longitudinal bars in the concrete beam.

[0013] Furthermore, the number of the concrete columns is 3-5.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are as follows:

[0015] 1. By constructing a concrete foundation on the original soil of the foundation pit, constructing concrete columns on the upper part, and reinforcing the columns laterally, the vertical force transmission and lateral stability of the columns are ensured. Concrete beams are constructed on the upper concrete columns, and the concrete beams are effectively connected to the main structure through embedded components. Thus, as a whole, a complete, stable and reliable support system is formed from the original soil of the foundation pit, which effectively supports the upper construction elevator foundation, thereby more effectively solving the problem of the construction elevator foundation being prone to settlement in the backfill area, thereby achieving the purpose of improving the safety of mechanical operation at the construction site and ensuring the personal safety of construction personnel;

[0016] 2. By pre-embedding steel plates in the main structure, the reserved steel bars welded on the pre-embedded steel plates are double-sided welded to the longitudinal bars in the concrete beams, so that the concrete beams and the main structure are effectively connected, the connection between the support system and the main structure is effectively strengthened, and the reliability of the support system is increased;

[0017] 4. Through the effective combination of concrete foundation, concrete beam and concrete column, the weight load of the construction elevator, the operation load and other external loads are transmitted to the original soil foundation through the system, so as to prevent the foundation of the construction elevator from settling. This avoids the foundation of the construction elevator from settling due to rain erosion and other reasons in the later period, thus avoiding the need for foundation grouting and reconstruction of the foundation of the construction elevator. The safety and reliability are relatively high.

[0018] 4. This system is a simple combination of concrete components, without complicated processes and simple construction operations. It can be operated by construction workers on the project site. It has a high one-time survival rate, low construction difficulty, and can be widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a plan view of the anti-settlement support system for the construction of the elevator foundation in the backfill area described in the utility model;

[0020] Figure 2 This is a front view of the anti-settlement support system for the construction of an elevator foundation in a backfill area according to the utility model;

[0021] Figure 3 This is a side view of the anti-settlement support system for the construction of an elevator foundation in a backfill area according to the utility model;

[0022] Figure 4 This is a schematic diagram of the embedded component of the utility model;

[0023] In the figure: 1. Concrete foundation, 2. Concrete column, 3. Concrete beam, 4. Embedded steel plate, 5. Concrete inclined column, 6. Reserved steel bar, 7. Expansion bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] In the description of the utility model, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0026] like Figure 1-4As shown, this embodiment discloses an anti-settling support system for the construction of an elevator foundation in a backfill area, which mainly includes a concrete foundation 1, a concrete column 2, a concrete inclined column 5, a concrete beam 3 and embedded components, etc. The concrete foundation 1 is located on the original soil at the bottom of the foundation pit, and its bottom should be leveled in advance and a concrete cushion layer should be poured. In this embodiment, three concrete columns 2 can be selected, and the three concrete columns 2 are arranged in the foundation pit. Two concrete inclined columns 5 are connected to the side of each concrete column 2, and the bottom of each concrete column 2 and the concrete inclined column 5 is correspondingly connected to the concrete foundation 1. Such a design ensures the stability of the concrete column 2. A transversely distributed concrete beam 3 is fixed on the top of each concrete column 2, one end of the concrete beam 3 is used to support the surface of the original road, and the other end is connected to the outer wall of the main building (i.e., the main structure) through an embedded component. The embedded components include embedded steel plates 4, which are made of steel plates with a thickness of 8mm and a length*width of 200mm*200mm. The embedded steel plates 4 are welded with reserved steel bars 6 of the same type as the concrete beams 3 at the four corners 20mm away from the four sides of the steel plates, and holes are drilled at the four corners 40mm away from the four sides of the steel plates. The holes have a diameter of 12mm, and 10mm expansion bolts 7 pass through the holes to effectively connect with the main structure of the main building's outer wall. The size and reinforcement of the concrete foundation 1, concrete column 2, and concrete beam 3 shall be determined by the design unit after strict calculation according to the specific conditions of the project and the specific location of the construction elevator.

[0027] Different from the method of preventing the foundation of an elevator from settling in the prior art, in this embodiment, on the basis of the original concrete support system, a concrete inclined column 5 is added to reinforce the system, and a pre-buried steel plate 4 is added to the main structure. The reserved steel bars welded on the pre-buried steel plate 4 are double-sided welded to the longitudinal bars in the concrete beam 3 to achieve an effective connection between the concrete beam 3 and the main structure. The specific steps are as follows:

[0028] S01. Before backfilling, the building materials left inside the foundation pit during the construction process are recycled and classified, the construction waste is cleaned into the garbage pool, and it is ensured that there are no foreign objects inside the foundation pit. The position of the concrete foundation 1 is laid out and leveled, and the concrete cushion layer is poured;

[0029] S02. According to the established design plan, the foundation steel bars are tied, the formwork is supported, and the foundation concrete is poured. After the pouring is completed, the foundation concrete is cured to form a concrete foundation 1;

[0030] S03. According to the established design plan, the column reinforcement is tied, the formwork is supported, and the column concrete is poured. After the pouring is completed, curing is performed to form a concrete column 2 and a concrete inclined column 5;

[0031] S04, by laying out the lines, drilling holes at the predetermined positions of the main structure, firmly reinforcing the embedded steel plate 4 to the main structure with expansion bolts, and welding the reserved steel bars at the corresponding positions of the embedded steel plate 4;

[0032] S05, backfill the soil in layers to the designed elevation, double-sided lap welding the longitudinal reinforcement of the beam and the pre-welded reinforcement on the embedded steel plate 4, and then tie the beam reinforcement, support the formwork, and pour the beam concrete according to the established design plan. After the pouring is completed, the beam concrete is cured to form a concrete beam 3;

[0033] S05, constructing the elevator foundation on the upper part of the concrete beam 3;

[0034] The anti-subsidence support system for the foundation of an elevator in a backfill area described in the utility model solves the problem that the foundation of an elevator in a backfill area is prone to subsidence and the existing support system is not systematic, and has poor firmness and stability, thereby achieving the purpose of improving the firmness and reliability of the support system, realizing the purpose of safe operation of machinery on the construction site and ensuring the personal safety of construction personnel, and is simple to operate, improves work efficiency, has low comprehensive investment costs, and has achieved obvious social and economic benefits.

Claims

1. An anti-settlement support system for elevator foundation in backfill area construction, characterized in that: It comprises a plurality of concrete columns arranged in a foundation pit, and a concrete foundation is arranged at the bottom of each concrete column; A transversely distributed concrete beam is provided on the top of the concrete column, one end of the concrete beam is used to support the surface of the original road, and the other end is connected to the outer wall of the main building through a pre-embedded component.

2. The anti-settling support system for elevator foundation in backfill area construction according to claim 1 is characterized in that: At least one concrete inclined column is arranged on the side of each concrete column.

3. The anti-settling support system for elevator foundation in fill area construction according to claim 2 is characterized in that: A concrete foundation is provided at the bottom of the concrete inclined column.

4. The anti-settling support system for elevator foundation in fill area construction according to claim 1 is characterized in that: The embedded component includes an embedded steel plate, which is fixed to the outer wall of the main building by a plurality of expansion bolts. The outer side surface of the embedded steel plate is provided with a plurality of reserved steel bars, and the reserved steel bars are connected as a whole with the longitudinal bars in the concrete beam.

5. The anti-settling support system for elevator foundation in backfill area construction according to any one of claims 1 to 4, characterized in that: The number of the concrete columns is 3-5.

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