Precision docking inverted mold device for non-simultaneous production of diaphragm wall steel reinforcement cages

Abstract

The present invention relates to a precision docking inverted mold device for non-simultaneous production of diaphragm wall steel reinforcement cages, including a steel plate positioning frame. The steel plate positioning frame is aligned with the interface end of the diaphragm wall steel reinforcement cage, and the lower part is fixed by channel steel. Angle steel is welded between the channel steel and the positioning steel plate in the steel plate positioning frame to ensure the firmness of the whole device. L-shaped positioning points are marked at the four corner points of the positioning steel plate for subsequent positioning. After the upper section of the steel reinforcement cage is welded, the main reinforcement is marked on the positioning steel plate A through transparent sulfuric acid paper, and then the marked transparent sulfuric acid paper is moved to the positioning steel plate B to accurately control the positioning position of the main reinforcement of the lower section of the steel reinforcement cage. The present invention can be applicable to main reinforcements with various different spacings; it can be reused; the channel steel and steel plates are common materials in the project and are easy to process, with strong operability; auxiliary materials such as sulfuric acid paper and magnets are cheap and the cost is controllable.

Description

Technical Field

[0001] The present invention relates to a butt joint positioning device for the reinforcement cage of a diaphragm wall, in particular to a construction positioning device for assisting in accurately butt - jointing the main reinforcement bars of the diaphragm wall when the reinforcement bars are not fabricated in the same batch in a restricted site. Background Technique

[0002] With the mature development of foundation pit technology, the construction of diaphragm walls will develop towards deeper and safer directions. As a result, longer reinforcement cages are required. Due to the limitation of hoisting length and safety considerations, the reinforcement cages of ultra - deep diaphragm walls need to be fabricated in sections. The effective butt joint of the main reinforcement bars is an important item for the acceptance of the reinforcement cage.

[0003] However, the development of cities has led to restricted sites in many construction sites, making it impossible to ensure the same - batch fabrication length of the diaphragm wall reinforcement bars, especially in the central areas of the city. The non - same - batch fabrication poses high requirements for the butt joint of the main reinforcement bars. If the main reinforcement bars cannot be accurately butt - jointed, the survival rate of the couplers will decrease, affecting the quality of the diaphragm wall.

[0004] Currently, there are already methods on the market to solve the problem of non - same - batch fabrication of the reinforcement cage in sections. The main method is to use a detachable double - layer channel steel bracket for butt - jointing and fixing the segmented diaphragm wall reinforcement cage. After each section of the reinforcement cage is processed, the bracket needs to be disassembled, and for reinforcement cages with different main reinforcement bar spacings, new channel steel brackets need to be fabricated.

[0005] In the present invention, two sets of the same devices are respectively fixed at the upper and lower ends of the coupler. After being fixed, they can be used until the completion of the diaphragm wall project of this project, and they are applicable to different main reinforcement bar spacings. Summary of the Invention

[0006] The present invention aims to solve the problem of accurately butt - jointing the main reinforcement bars when the reinforcement cage of the diaphragm wall is fabricated in sections and the fabrication in different batches is restricted by the site. It provides a precision butt - jointing reverse - mold device for the non - same - batch fabrication of the reinforcement cage of the diaphragm wall. Mainly, a same steel plate positioning frame is made at the interface ends of the reinforcement cages in two non - same - batch fabrication sites.

[0007] To achieve the above object, the technical solution of the present invention is: a precision butt - jointing reverse - mold device for the non - same - batch fabrication of the reinforcement cage of the diaphragm wall, including a steel plate positioning frame. The steel plate positioning frame is aligned with the interface end of the diaphragm wall reinforcement cage and is fixed at the lower part by channel steel. Angle steel is used for welding between the channel steel and the positioning steel plate in the steel plate positioning frame to ensure the firmness of the whole device. L - shaped positioning points are marked at the four corner points of the positioning steel plate for subsequent positioning. After the main reinforcement bars of the upper - section reinforcement cage are welded, the positions of the main reinforcement bars are marked on the positioning steel plate A through transparent sulfuric acid paper, and then the marked transparent sulfuric acid paper is moved to the positioning steel plate B to accurately control the positioning position of the main reinforcement bars of the lower - section reinforcement cage.

[0008] Further, after the upper-section steel cage is installed, the positions of the main reinforcement bars need to be marked on the transparent sulfuric acid paper of the positioning steel plate A. The transparent sulfuric acid paper passes through the four positioning intersection points and is then fixed on the positioning steel plate A with a magnet. For the upper-section steel cage, when the protruding ribs are close to the positioning steel plate A, they are directly marked as "O" with a marker pen. For the staggered concave ribs of the upper-section steel cage, a laser pen is used to project them onto the positioning steel plate A and then marked as "X" with a marker pen.

[0009] Further, after moving the sulfuric acid paper to the positioning steel plate B for fabricating and positioning the main reinforcement bars of the lower-section steel cage, the main reinforcement bars are precisely controlled by the position of the installed positioning plate. At this time, the "O" points are the concave ribs of the lower-section steel cage, and the "X" points are the protruding ribs of the lower-section steel cage. At the same time, make sure not to make mistakes in the soil-facing side and the soil-covered side of adjacent steel cages. If there is a third section or more steel cages, the same method is applied accordingly.

[0010] Further, the positioning steel plate is a 3-mm thick steel plate, and its size is 20 - 50 cm larger than the outer edge of the steel cage on the left, right, and upper sides.

[0011] The beneficial effects of the present invention are as follows:

[0012] 1. It can be applicable to main reinforcement bars with various different spacings; 2. It can be reused; 3. The channel steel and steel plate are common materials in the project, easy to process, and highly operable; the auxiliary materials such as sulfuric acid paper and magnets are inexpensive, and the cost is controllable. Description of the Drawings

[0013] Figure 1 It is a side view for fabricating and positioning the main reinforcement bars of the upper-section steel cage;

[0014] Figure 2 It is a side view for fabricating and positioning the main reinforcement bars of the lower-section steel cage;

[0015] Figure 3 It is a front elevation view of the positioning steel plate;

[0016] Figure 4 It is a side elevation view of the positioning steel plate;

[0017] In the figures: 1. Protruding ribs of the upper-section steel cage, 2. Concave ribs of the upper-section steel cage, 3. Protruding ribs of the lower-section steel cage, 4. Concave ribs of the lower-section steel cage, 5. Positioning steel plate, 6. Channel steel, 8. Transparent sulfuric acid paper, 9. Positioning intersection points, 10. Magnet. Detailed Embodiment

[0018] In order to make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments.

[0019] As Figures 1 to 4As shown in the figure, the precision docking inverted mold device for the non-simultaneous production of the diaphragm wall reinforcement cage of the present invention includes a steel plate positioning frame. The steel plate positioning frame is aligned with the interface end of the diaphragm wall reinforcement cage, and the lower part is fixed by channel steel 6. Angle steel is welded between the channel steel 6 and the positioning steel plate 5 in the steel plate positioning frame to ensure the firmness of the entire device. L-shaped positioning points are marked at the four corner points of the positioning steel plate 5 for subsequent positioning.

[0020] The specific solution is as follows: After the upper-section reinforcement cage is welded, the main reinforcement can mark the position of the main reinforcement on the positioning steel plate A through the transparent sulfuric acid paper 8, and then move the marked transparent sulfuric acid paper 8 to the positioning steel plate B to implement the main solution of the lower-section reinforcement cage.

[0021] Figure 1 It is the side view of the positioning of the main reinforcement for the production of the upper-section reinforcement cage. After the upper-section reinforcement cage is installed, the position of the main reinforcement needs to be marked on the transparent sulfuric acid paper 8 on the positioning steel plate A. The transparent sulfuric acid paper 8 passes through the four positioning intersection points 9 and is then fixed on the positioning steel plate A with a magnet 10. The protruding rib 1 of the upper-section reinforcement cage is very close to the positioning steel plate A, and it can be directly marked as an O shape with a marker pen. The staggered concave rib 2 of the upper-section reinforcement cage is projected onto the positioning steel plate A with a laser pen and marked as an X shape with a marker pen.

[0022] Figure 2 It is the side view of the positioning of the main reinforcement for the production of the lower-section reinforcement cage. After moving the transparent sulfuric acid paper 8 to the positioning steel plate B, the worker needs to install the positioning steel plate B to accurately control the main reinforcement. At this time, the O-shaped point is the concave rib 4 of the lower-section reinforcement cage, and the X-shaped point is the protruding rib 3 of the lower-section reinforcement cage. At the same time, attention should be paid to the soil-facing side and the soil-covered side of the adjacent reinforcement cages to avoid errors. If there is a third section or more reinforcement cages, it can be implemented by analogy.

[0023] Figure 3 and Figure 4 They are the front elevation and side elevation of the positioning steel plate 5. Considering the steel plate deformation and the flexibility of the device, the steel plate used in this case is a 3-mm-thick steel plate, and the size of the steel plate is 20 - 50 cm beyond the outer edge of the reinforcement cage on the left and right and above.

Claims

1. A precision docking inverted mold device for the non - same - batch production of diaphragm wall steel reinforcement cages, characterized in that: It includes a steel plate positioning frame which is aligned with the interface end of the diaphragm wall reinforcement cage. The lower part is fixed by channel steel, and angle steel is used for welding between the channel steel and the positioning steel plate in the steel plate positioning frame to ensure the firmness of the whole device. L-shaped positioning points are marked at the four corner points of the positioning steel plate for subsequent positioning. After the upper section of the reinforcement cage is welded, the main bars are marked on the positioning steel plate A through transparent sulfuric acid paper, and then the marked transparent sulfuric acid paper is moved to the positioning steel plate B to accurately control the positioning position of the main bars of the lower section of the reinforcement cage. After the upper section of the reinforcement cage is installed, the positions of the main bars need to be marked on the transparent sulfuric acid paper of the positioning steel plate A. The transparent sulfuric acid paper passes through the four L-shaped positioning points and is fixed on the positioning steel plate A with a magnet. The protruding ribs of the upper section of the reinforcement cage close to the positioning steel plate A are directly marked as O-shaped with a marker pen, and the staggered concave ribs of the upper section of the reinforcement cage are projected onto the positioning steel plate A with a laser pen and marked as X-shaped with a marker pen. When making and positioning the main bars of the lower section of the reinforcement cage, after moving the transparent sulfuric acid paper to the positioning steel plate B, the main bars are accurately controlled by installing the position of the positioning steel plate B. At this time, the O-shaped points are the concave ribs of the lower section of the reinforcement cage, and the X-shaped points are the protruding ribs of the lower section of the reinforcement cage. At the same time, the soil-facing side and the back soil-facing side of adjacent reinforcement cages should not be misaligned. If there are more sections of reinforcement cages, the same method is implemented by analogy.

2. The precise docking inverted mold device for non - same - batch production of diaphragm wall reinforcement cages according to claim 1, wherein: The positioning steel plate is a 3-mm-thick steel plate, and the left, right, and upper sides of the positioning steel plate exceed the outer side of the reinforcement cage by 20 - 50 cm.

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