Pit type steel pipe static pressure pile underpinning frame

Abstract

The pit type steel pipe static pressure pile underpinning frame comprises two sets of pipe supporting assemblies which are symmetrically spliced, each pipe supporting assembly comprises a first steel plate and a second steel plate which are vertically arranged in parallel, and a plurality of supporting plates are arranged between the first steel plate and the second steel plate at equal intervals; semicircular hoops are arranged at the centers of the first steel plate and the second steel plate at the splicing positions of the pipe supporting assemblies, a plurality of connecting holes are symmetrically formed in the supporting plate at the splicing positions of the pipe supporting assemblies, and the two pipe supporting assemblies are connected through bolts arranged in the connecting holes in a penetrating mode. Through the pipe supporting assemblies which are symmetrically spliced, the installation problem of the last section of steel pipe static pressure pile in the construction process of the steel pipe static pressure pile can be solved, the supporting plate between the first steel plate and the second steel plate serves as a reinforcing steel plate, and underpinning force can be evenly and completely conducted to an underpinning frame of the steel pipe pile; it is guaranteed that the whole steel pipe static pressure pile meets the design force bearing requirement, the construction quality is improved, and the reinforcing effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of steel pipe static pressure pile reinforcement equipment, in particular to a pit type steel pipe static pressure pile supporting and replacing frame. Background Art

[0002] With the gradual advancement of urban renewal and renovation of old residential communities, the age of buildings and improper use and maintenance in these communities are causing uneven foundation settlement, cracks, and tilting, which seriously threaten the structural safety of the buildings. Since the foundation is an important component of a building, its condition directly affects its overall lifespan. Therefore, through foundation reinforcement research, effective reinforcement methods must be found to improve the foundation's bearing capacity and stability, ensuring the safety of the building during use.

[0003] For some old buildings, due to their age, their design standards cannot meet the current building safety requirements. Therefore, there is an urgent need to reinforce the foundation to improve the building's earthquake resistance, wind resistance and other performance, and reduce the risk of damage to the building by natural disasters. By reinforcing the foundation, damaged parts can be repaired, the working condition of the foundation can be improved, and the aging process of the building can be delayed, thereby extending the service life of the building, avoiding premature demolition of the building due to foundation problems, and reducing resource waste and environmental pollution. Moreover, with the development of society and changes in demand, some buildings may need to undergo functional changes, such as changing from residential to commercial use, adding floors, etc., which often places higher demands on the foundation. Therefore, through foundation reinforcement research, technical support can be provided for functional changes of buildings so that the foundation can meet new usage needs.

[0004] At present, steel pipe static pressure piles are often used for building foundation reinforcement. In order to ensure that the steel pipe static pressure piles can bear the upper load during construction, the upper gap needs to be underpinned after the static pressure piles are pressed. This is to solve the installation problem of the last section of the steel pipe static pressure piles during the construction process. However, traditional underpinning frames are usually bulky and cannot pressurize the completed static pressure piles. Moreover, during underpinning, it is impossible to ensure that the underpinning force is fully transmitted to the steel pipe piles that have been pressed into the soil layer. As a result, the existing building will produce additional settlement after the underpinning is completed, and the reinforcement effect cannot be achieved. Utility Model Content

[0005] The utility model provides a pit-type steel pipe static pressure pile supporting and replacing frame, the purpose of which is to provide a light and easy-to-operate supporting and replacing frame, which can completely transmit the supporting and replacing force to the steel pipe pile supporting and replacing frame during construction, solve the installation problem of the last section of the steel pipe static pressure pile during the construction process of the steel pipe static pressure pile, improve the construction quality, and enhance the reinforcement effect.

[0006] To achieve its purpose, the utility model adopts the following technical solutions:

[0007] A pit-type steel pipe static pressure pile support and replacement frame includes two groups of symmetrically spliced hosting components, the hosting components include a first steel plate and a second steel plate arranged parallel to each other, and a number of support plates are equidistantly arranged between the first steel plate and the second steel plate; semicircular clamps are provided at the centers of the first steel plate and the second steel plate at the splicing position of the hosting components, and a number of connecting holes are symmetrically provided on the support plates at the splicing position of the hosting components, and the two groups of hosting components are connected by bolts passed through the connecting holes.

[0008] Furthermore, each group of hosting components has five support plates.

[0009] Furthermore, the inner diameter of the semicircular clamp is the same as the outer diameter of the static pressure steel pipe.

[0010] Furthermore, the first steel plate, the second steel plate and the support plate have the same thickness, which is 30 to 50 mm.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The support frame provided by the present invention can solve the installation problem of the last section of the steel pipe static pressure pile during the construction process of the steel pipe static pressure pile by means of symmetrically spliced support components. The whole is made of welded steel plates with strong bearing capacity, and the first and second steel plates are in the shape of chamfered prisms, with a simple structure and easy production. The two sets of support components are connected by bolts, which are convenient for assembly and disassembly, and are practical and fast. The support plates equidistantly welded between the first and second steel plates serve as reinforcing steel plates, which can evenly and completely transmit the support force to the support frame of the steel pipe pile, ensuring that the entire steel pipe static pressure pile meets the design bearing requirements, improving the construction quality and strengthening the reinforcement effect.

[0013] 2. The steel plates used in the support rack provided by the present invention are cut from waste steel plates, achieving the purpose of repairing and reusing waste, meeting the national energy-saving and environmental protection requirements, with low production cost and high reuse rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of the support frame of the present utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of the support frame of the present utility model;

[0016] In the figure: 1-first steel plate; 2-second steel plate; 3-support plate; 4-semicircular clamp; 5-connecting hole; 6-bolt. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] like Figure 1-2As shown, the present invention is a pit-type steel pipe static pressure pile support frame, comprising two symmetrically connected support assemblies. The support assemblies comprise a first steel plate 1 and a second steel plate 2, arranged parallel to each other. Five support plates 3 are welded between the first and second steel plates 1 and 2. The support plates 3 serve as reinforcement plates and are welded equidistantly between the first and second steel plates 1 and 2 to evenly transmit the support force. The first steel plate 1 has a size of 400 × 400 × 30 mm, the second steel plate 2 has a size of 200 × 400 × 30 mm, and the support plates 3 are 400 mm high and 30 mm thick. A semicircular clamp 4 is cut at the center of each of the first and second steel plates 1 and 2 at the joint of the support assemblies. The inner diameter of the clamp 4 is the same as the outer diameter of the static pressure steel pipe. Each support plate 3 at the joint of the support assemblies is symmetrically provided with two connecting holes 5. 28 mm Φ bolts 6 are inserted through the connecting holes 5 to securely connect the two support assemblies.

[0019] Using the support frame of this application, the construction steps are as follows:

[0020] (1) Cut the first steel plate 1, the second steel plate 2 and the support plate 3, and then weld the support plate 3 between the first steel plate 1 and the second steel plate 2 at equal intervals by fillet welds to provide reinforcement and evenly transmit the supporting force;

[0021] (2) The two assembled trusteeship components are moved to the static pressure steel pipe piles that have been pressed into the soil layer, and the two trusteeship components are installed on the outside of the steel pipe piles. After installation, the top of the trusteeship components is 2 cm lower than the surface of the steel pipe piles. Then, the two trusteeship components are fixed firmly by the bolts 6 inserted into the connection holes 5;

[0022] (3) Place two jacks symmetrically on the top of the two first steel plates 1, start the jacks, and make the steel pipe static pressure piles that have been pressed into the soil layer sink slightly due to the friction between the support frame and the steel pipe static pressure piles, so as to generate an upper gap. Then push the pre-processed support steel pipe into the upper gap and fill it tightly. At the same time, align and fix the upper support steel pipe with the lower static pressure steel pipe pile, and the installation and support work of the last section of the steel pipe static pressure pile in the construction process of the steel pipe static pressure pile can be completed.

[0023] (4) After the static pressure steel pipe pile is replaced, the two jacks are unloaded at the same time, the jacks are removed, the connecting bolts 6 between the two sets of supporting components are tightened, and the replacement frame is removed. The static pressure pile replacement construction is completed.

Claims

1. A pit-type steel pipe static pressure pile support and replacement frame, characterized by: The invention comprises two groups of symmetrically spliced hosting components, wherein the hosting components comprise a first steel plate (1) and a second steel plate (2) arranged in parallel above and below, and a plurality of support plates (3) are equidistantly arranged between the first steel plate (1) and the second steel plate (2); a semicircular clamp (4) is provided at the center of the first steel plate (1) and the second steel plate (2) at the splicing position of the hosting components, and a plurality of connection holes (5) are symmetrically provided on the support plate (3) at the splicing position of the hosting components, and the two groups of hosting components are connected by bolts (6) passing through the connection holes (5).

2. The pit-type steel pipe static pressure pile support and replacement frame according to claim 1, characterized in that: Each group of the supporting plates (3) of the hosting components is five.

3. The pit-type steel pipe static pressure pile support and replacement frame according to claim 2, characterized in that: The inner diameter of the semicircular hoop (4) is the same as the outer diameter of the static pressure steel pipe.

4. A pit-type steel pipe static pile support and replacement frame according to any one of claims 1 to 3, characterized in that: The first steel plate (1), the second steel plate (2) and the support plate (3) have the same thickness, which is 30 to 50 mm.

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