A forming structure for continuous pouring of an underground concrete ring wall

Abstract

The utility model discloses a kind of forming structures for continuous pouring of underground concrete annular wall, including I-beam, the fender plate being arranged in the inside and outside of the I-beam, the reinforcement cage being arranged between two adjacent I-beams, several ultrasonic detection tubes being arranged on the reinforcement cage, the U-shaped groove both sides of the I-beam form spillway by the fender plate, the two sides of the reinforcement cage are located between two fender plates, and multiple I-beams and the reinforcement cage combination form the annular structure of underground concrete annular wall. Direct continuity pouring can be carried out on underground concrete annular wall, and pipe joint is not needed to assist, and ultrasonic detection can be carried out on wall body at any time during pouring process.

Description

Technical Field

[0001] This utility model relates to the technical field of building construction, specifically to a molding structure for continuous casting of underground concrete ring walls. Background Technology

[0002] Currently, when pouring underground concrete walls, the general procedure is to first excavate a foundation trench of sufficient depth, length, and width. Then, a pipe joint is inserted into one end of the trench for positioning and sealing with grout. Next, a reinforcing cage is placed into the trench, and finally, concrete mortar is poured in and allowed to solidify, forming one section of the wall. After the first section is poured, the pipe joint is removed, and the next section of the trench is excavated. The pipe joint is then inserted at the other end, allowing both ends of the trench to be positioned by the pipe joint and the already solidified wall. After the reinforcing cage is placed in, concrete mortar is poured in and allowed to solidify, forming the second section of the wall. This process is repeated to complete the pouring of the second section of the wall.

[0003] When constructing a vortex sedimentation tank, several challenges arise due to its circular overall plan, depth of 28m, and underground concrete wall thickness of up to 1m. These challenges are addressed by employing existing casting methods. First, because the underground walls of the vortex sedimentation tank are deep and thick, the pipe joints used in the construction require repeated insertion and removal. The pipe joints need to have a large diameter, resulting in a large overall weight. This makes the construction difficult and dangerous during connection and lifting operations.

[0004] Secondly, when using pipe joints to seal the slurry, the slurry can easily leak out from the side gaps of the pipe joints, resulting in hollow areas in the solidified wall. At the same time, it is difficult to separate the solidified pipe joints from the wall.

[0005] Third, existing underground walls can only be inspected using ultrasonic testing of the external walls. This means that during the construction of the vortex sedimentation tank, testing can only be carried out after all the walls have been constructed and the internal tank has been excavated. Moreover, the testing can generally only detect a certain depth on the side closest to the inside of the tank, and it is impossible to accurately detect when the problem is on the outer wall.

[0006] Fourth, water seepage is likely to occur between two walls because they are not integrally formed, making waterproofing at the joints difficult. Summary of the Invention

[0007] In order to solve one or more technical problems existing in the prior art, the purpose of this application is to provide a molding structure for continuous casting of underground concrete ring walls, which can directly and continuously cast underground concrete ring walls without the need for pipe joints, and the wall can be ultrasonically detected at any time during the casting process.

[0008] To address the aforementioned technical problems, the objective of this application is achieved through the following technical solution: A molded structure for continuous casting of underground concrete ring wall includes an I-beam, protective plates on the inner and outer sides of the I-beam, a reinforcing cage between two adjacent I-beams, and several ultrasonic detection tubes on the reinforcing cage. The U-shaped groove of the I-beam forms an overflow prevention surface on both sides through the protective plates. The two sides of the reinforcing cage are located between two protective plates. Multiple I-beams and the reinforcing cage are combined to form an underground concrete ring wall with a ring structure.

[0009] Preferably, the protective plate is made of stainless steel plate with a thickness of less than 1.5mm, and the length of one side of the protective plate extending outward from the I-beam is 30~50cm.

[0010] Preferably, the protective plate and the I-beam are fixed together by welding.

[0011] Preferably, the steel cage includes a first horizontal bar and a second horizontal bar distributed on the inner and outer sides, and a plurality of longitudinal main bars for fixing the first horizontal bar and the second horizontal bar respectively. The first horizontal bar and the second horizontal bar are connected by the longitudinal main bars to form the inner and outer sides of the steel cage, and a vertical truss is provided between the first horizontal bar and the second horizontal bar.

[0012] Preferably, 3 to 5 vertical trusses are provided between the first horizontal rib and the second horizontal rib.

[0013] Preferably, the first and second horizontal ribs are bent to form a V-shaped structure.

[0014] Preferably, the spacing between two adjacent ultrasonic probes on the steel cage is 0.6~1m.

[0015] Preferably, the inner diameter of the ultrasonic probe is 25~30mm. Compared with the prior art, the beneficial effects of this utility model are as follows: When pouring the underground concrete ring wall, simply hoist and insert I-beams with protective plates at both ends of the excavated trench, then hoist the reinforcing cage between adjacent I-beams for direct pouring. When pouring the second section of the concrete wall, insert another I-beam with a protective plate at the other end for further pouring. Throughout the continuous pouring process, pipe joints are no longer needed for sealing. Especially during the pouring of the final section, no side auxiliary structures are required. Adjacent sections are reinforced with I-beams, and the protective plates further enhance the strength of the joints after curing, while also preventing excessive slurry loss during pouring. Ultrasonic detection tubes are pre-installed throughout the construction process, allowing for continuous monitoring of the concrete wall and timely repair of any problems found. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention, showing the top view distribution structure of the underground concrete ring wall; Figure 2 This is a schematic diagram of the combined structure of the I-beams and the reinforcing cage in the foundation trench of this utility model; Figure 3 This is a schematic diagram of the combined structure of the I-beam and the guard plate in this utility model; Figure 4 This is a structural diagram of the first and second horizontal reinforcing bars forming the inner and outer surfaces via longitudinal main reinforcing bars in this utility model. In the diagram: 1. Reinforcing cage; 2. I-beam; 3. Vertical truss; 4. Second horizontal reinforcement; 5. Ultrasonic probe; 6. Longitudinal main reinforcement; 7. First horizontal reinforcement; 8. Protective plate; 9. Inner side; 10. Outer side; 100. Foundation trench. Detailed Implementation

[0017] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0018] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0019] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] like Figures 1-4 As shown, a molded structure for continuous casting of underground concrete ring wall includes an I-beam 2, protective plates 8 on the inner and outer sides of the I-beam 2, a reinforcing cage 1 between two adjacent I-beams 2, and a plurality of ultrasonic detection tubes 5 on the reinforcing cage 1. The U-shaped groove of the I-beam 2 forms an overflow prevention surface on both sides through the protective plates 8. The two sides of the reinforcing cage 1 are located between two protective plates 8. The plurality of I-beams 2 and the reinforcing cage 1 are combined to form an underground concrete ring wall with a ring structure.

[0021] When constructing the vortex sedimentation tank, a foundation trench 100 with a depth of 28m, a width of 1m, and a certain length is first excavated using trenching equipment. At the same time, workers install protective plates 8 on both sides of I-beams 2 with a width matching the width of the foundation trench 100. Then, multiple I-beams 2 with protective plates 8 are welded together to form the required length. Meanwhile, a steel cage 1 of the required length is fabricated, and an ultrasonic detection tube 5 is installed on the steel cage 1.

[0022] Once the necessary accessories for the foundation trench 100 are prepared, two I-beams 2 with protective plates 8 are inserted into both ends of the foundation trench 100 using lifting equipment. Then, the reinforcing cage 1 is hoisted and inserted into the foundation trench 100, with both sides of the reinforcing cage 1 positioned within the grooves of the I-beams 2. When pouring the underground concrete ring wall, slurry is simply injected into the foundation trench 100 for direct pouring. During pouring, the bottom and both inner and outer sides are confined by earthen walls, while the two ends are confined by the two I-beams 2 with protective plates 8, preventing the uncured slurry from overflowing. After the first section of the concrete wall is poured, the foundation trench 100 can be simultaneously excavated on both adjacent sides of the existing wall using trenching equipment. After excavation, one side is sealed with existing I-beams 2, and another I-beam 2 is inserted at the other end before the reinforcing cage 1 with ultrasonic detection tubes 5 is placed in for pouring. By repeating the above steps, continuous pouring of the underground side concrete ring wall of the vortex sedimentation tank can be achieved. Throughout the continuous pouring process, pipe joints are no longer required for sealing, effectively reducing construction difficulty and improving safety. Especially during the pouring of the final wall section, no side auxiliary structures are needed. Adjacent sections are reinforced with I-beams 2, and the protective effect of the protective plates 8 ensures better joint strength after wall curing and prevents excessive slurry loss during pouring. Ultrasonic detection tubes 5 are pre-installed throughout the construction process, allowing for continuous detection of the concrete wall and timely repair of any problems. This solves the problem of issues remaining undetected in walls far from the inspection area when the wall is large. The connection between two wall sections poured at different times, using I-beams 2 with protective plates 8, ensures better sealing at the joint, preventing future water seepage and simplifying waterproofing at the joints.

[0023] A further improvement is that the guard plate 8 is made of stainless steel plate with a thickness of less than 1.5mm, and the length of one side of the guard plate 8 extending outward from the I-beam 2 is 30~50cm.

[0024] The protective plate 8 is made of stainless steel with a thickness generally not exceeding 1.5mm. During insertion, it effectively ensures the ductility of the protruding part, preventing the stainless steel plate from jamming due to excessive rigidity when inserted into the foundation trench 100 due to excessive thickness. Furthermore, during pouring, it effectively acts as a water-stopping and limiting element, resulting in better sealing at the joint later. Especially when one side of the protective plate 8 extends 30-50cm outward from the I-beam 2, the pressure of the mortar effectively seals and prevents water leakage between the outer wall and the soil layer.

[0025] A further improvement is made in that the guard plate 8 and the I-beam 2 are fixed together by welding. During construction, it can be fabricated on-site, resulting in lower transportation and manufacturing costs. The length of the I-beam 2 can be determined according to requirements, and the final length is formed by welding. Generally, the I-beam 2 is welded from a steel plate with a thickness of about 12mm.

[0026] A further improvement is made in that the steel cage 1 includes a first horizontal bar 7 and a second horizontal bar 4 distributed on the inner and outer sides, and a plurality of longitudinal main bars 6 for fixing the first horizontal bar 7 and the second horizontal bar 4 respectively. The first horizontal bar 7 and the second horizontal bar 4 are connected by the longitudinal main bars 6 to form the inner side 9 and the outer side 10 of the steel cage 1. A vertical truss 3 is provided between the first horizontal bar 7 and the second horizontal bar 4.

[0027] Due to the large thickness of the wall, in order to ensure the firmness of the wall surface, the inner and outer sides of the steel cage 1 are formed by a combination of several vertically arranged longitudinal main bars 6 and horizontally arranged first horizontal bars 7 and second horizontal bars 4. The inner side 9 and the outer side 10 are supported and positioned by vertical trusses 3, which can not only ensure the overall strength of the steel cage 1, but also improve the service life of the wall surface after pouring.

[0028] A further improvement is made in that 3 to 5 vertical trusses 3 are provided between the first horizontal rib 7 and the second horizontal rib 4; the first horizontal rib 7 and the second horizontal rib 4 are bent to form a V-shaped structure.

[0029] The first horizontal reinforcement 7 and the second horizontal reinforcement 4 are connected and supported by 3 to 5 vertical trusses 3, which improves the rigidity of the steel cage 1 and increases the stability of the wall after casting. At least 1 to 2 sets of vertical trusses 3 are installed on both sides of the steel cage 1, and the vertical trusses 3 form a *-shaped structure through steel reinforcement. Since the overall outline of the vortex sedimentation tank is circular, the outline structure of the steel cage 1 is modified to reduce the number of segmented wall sections. Specifically, the first horizontal reinforcement 7 and the second horizontal reinforcement 4 are both bent at a certain angle to form a V-shaped structure. This change in the overall shape of the steel cage 1 reduces the number of segmented wall sections required to form the vortex sedimentation tank.

[0030] A further improvement is made in that the spacing between two adjacent ultrasonic detection tubes 5 on the steel cage 1 is 0.6~1m; and the inner diameter of the ultrasonic detection tube 5 is 25~30mm.

[0031] The ultrasonic detection tube 5 is constructed by sequentially welding stainless steel pipes with an inner diameter of 25-30mm. It is fixed to the reinforcing cage 1 using steel wire or welding. The bottom of the ultrasonic detection tube 5 is sealed, while the top is open. The upper end of the ultrasonic detection tube 5 is higher than the end of the reinforcing cage 1, preventing slurry from entering and causing blockages during pouring. Furthermore, when testing a specific area of ​​the wall, the probe can be directly inserted along the ultrasonic detection tube 5, effectively solving the problem that existing underground wall inspections can only be performed through the external wall. This is especially beneficial during the construction of vortex sedimentation tanks, eliminating the need to wait until the internal tank is completed before testing. Moreover, the pre-embedded method allows for comprehensive testing of the entire wall during later stages, preventing defects in the outer wall from being missed due to its thickness. Among them, there is an ultrasonic detection tube 5 in the middle of the bend of the steel cage 1, and in the flat area of ​​the steel cage 1, the ultrasonic detection tube 5 is installed in the area near the outside, which can ensure that all areas prone to problems are detected.

[0032] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A molded structure for continuous casting of underground concrete ring walls, characterized in that: The structure includes an I-beam (2), protective plates (8) on both the inner and outer sides of the I-beam (2), a reinforcing cage (1) between two adjacent I-beams (2), and several ultrasonic detection tubes (5) on the reinforcing cage (1). The U-shaped groove of the I-beam (2) forms an overflow prevention surface on both sides through the protective plates (8). The two sides of the reinforcing cage (1) are located between two protective plates (8). Multiple I-beams (2) and reinforcing cages (1) are combined to form an underground concrete ring wall with a ring structure.

2. The molding structure for continuous casting of underground concrete ring wall according to claim 1, characterized in that: The guard plate (8) is made of stainless steel plate with a thickness of less than 1.5 mm, and the length of one side of the guard plate (8) extending outward from the I-beam (2) is 30~50 cm.

3. The molding structure for continuous casting of underground concrete annular walls according to claim 2, characterized in that: The guard plate (8) and the I-beam (2) are fixed together by welding.

4. The molding structure for continuous casting of underground concrete ring wall according to claim 1, characterized in that: The steel cage (1) includes a first horizontal bar (7) and a second horizontal bar (4) distributed on the inner and outer sides, and a plurality of longitudinal main bars (6) for fixing the first horizontal bar (7) and the second horizontal bar (4). The first horizontal bar (7) and the second horizontal bar (4) are connected by the longitudinal main bars (6) to form the inner side (9) and the outer side (10) of the steel cage (1). A vertical truss (3) is provided between the first horizontal bar (7) and the second horizontal bar (4).

5. A molding structure for continuous casting of underground concrete ring walls according to claim 4, characterized in that: Three to five vertical trusses (3) are provided between the first horizontal rib (7) and the second horizontal rib (4).

6. A molding structure for continuous casting of underground concrete annular walls according to claim 4, characterized in that: The first horizontal rib (7) and the second horizontal rib (4) are bent to form a V-shaped structure.

7. A molding structure for continuous casting of underground concrete ring walls according to claim 4, characterized in that: The distance between two adjacent ultrasonic detection tubes (5) on the steel cage (1) is 0.6~1m.

8. A molding structure for continuous casting of underground concrete ring walls according to claim 7, characterized in that: The inner diameter of the ultrasonic probe (5) is 25~30mm.

Images