Aqueous dispersion of polyurethane resin

Abstract

The utility model relates to the technical field of anchor device concealed installation, aims at solving the problem of poor positioning accuracy, low reusability, inconvenient dismounting, low construction efficiency and many quality hidden dangers of anchor device installation reserved space in the prior art, provides a kind of aqueduct prestressed steel strand anchor device installation space reservation detachable device, it includes steel formwork;One side of steel formwork has pouring area, and pouring area is equipped with anchor box, and anchor box is detachably fixed on the side of steel formwork close to pouring area;Pouring area is also equipped with prestressed steel strand, and one end of prestressed steel strand close to steel formwork sequentially penetrates anchor box and steel formwork.The utility model has the beneficial effects of high positioning accuracy, high reusability, convenient dismounting, high construction efficiency and few quality hidden dangers of anchor device installation reserved space.

Description

Technical Field

[0001] This utility model relates to the field of concealed installation technology of anchorages, and more specifically, to a detachable device for reserving installation space for prestressed steel strand anchorages in aqueducts. Background Technology

[0002] In aqueduct construction, the installation of prestressed steel strand anchors requires pre-reserving corresponding installation space in the concrete structure to ensure the smooth progress of subsequent steel strand tensioning operations and anchor pouring protection. In traditional construction, anchor installation space is often reserved using spliced ​​wooden molds, one-time rigid molds, or no anchor installation space at all. However, spliced ​​wooden molds are prone to deformation and displacement during concrete pouring due to insufficient material strength, resulting in deviations in the reserved space position and affecting the accuracy of anchor installation. One-time rigid molds, while ensuring initial positioning, cannot be reused, resulting in material waste. Furthermore, they are difficult to remove after pouring, easily causing damage to the concrete structure and the edges of the reserved space, increasing potential quality risks. Without anchor installation space, the anchors are exposed, which is inconvenient for surface leveling and pouring, and results in an unsightly overall appearance.

[0003] Meanwhile, the assembly and disassembly of traditional pre-reserved devices often require multiple people to work together, which not only consumes a lot of manpower, but also has problems such as inconvenience in threading and positioning the steel strands and difficulty in aligning them with the mold holes, resulting in low construction efficiency. In addition, existing devices cannot balance the accuracy of the reserved space with the convenience of subsequent anchor installation and pouring protection. Problems such as deviations in the size of the reserved space and internal residual impurities often affect the tensioning effect of the steel strands and the long-term stability of the anchors, thereby increasing the cost of rework and restricting the improvement of the construction quality and progress of the aqueduct project. Utility Model Content

[0004] The present invention aims to provide a detachable device for reserving installation space of prestressed steel strand anchorages in aqueducts, so as to solve the problems of poor positioning accuracy, low reuse rate, inconvenient disassembly and assembly, low construction efficiency and many quality risks in the existing technology of anchorage installation space reservation.

[0005] The embodiments of this utility model are implemented as follows: This utility model embodiment provides a detachable device for reserving installation space for prestressed steel strand anchorages in aqueducts, which includes a steel template; The steel formwork has a pouring area on one side, and the pouring area is equipped with an anchor box, which is detachably fixed to the side of the steel formwork near the pouring area. The aforementioned pouring area is also equipped with prestressed steel strands, with the end of the prestressed steel strands near the aforementioned steel formwork passing through the aforementioned anchor box and the aforementioned steel formwork in sequence.

[0006] In use, the anchor box is first connected and fixed to the steel template with bolts; then the prestressed steel strands are passed through the anchor box and the steel template in sequence. After the device is assembled, concrete is poured into the pouring area. At this time, the anchor box and the steel template enclose the space reserved for anchor installation. After the concrete solidifies, the bolts connecting the anchor box and the steel template are removed, and the anchor box is removed from the steel template to obtain a precisely positioned anchor installation space. The prestressed steel strand tensioning operation is then carried out. After tensioning is completed, the anchor installation and pouring protection construction are carried out through the reserved anchor installation space. After the construction is completed, the anchor box can be recycled and reused for the next reserved anchor installation space operation.

[0007] This embodiment discloses a detachable device for reserving installation space for prestressed steel strand anchors in aqueducts. By employing a bolted detachable connection between the anchor box and the steel template, and with the prestressed steel strands sequentially passing through both the anchor box and the steel template to form the reserved space for anchor installation, this structural design ensures the precise positional accuracy of the anchor installation space through the accurate connection between the anchor box and the steel template. Furthermore, it allows for convenient removal of the anchor box after concrete pouring, facilitating the protection of the anchors after tensioning the prestressed steel strands. Simultaneously, the device has a simple structure, can be operated by a single person, and the anchor box and other components are reusable, significantly saving labor costs and effectively improving construction efficiency. It also avoids quality problems caused by positioning deviations and inconvenient disassembly / reassembly in traditional reservation methods, thereby improving construction quality and efficiency. Therefore, this detachable device for reserving installation space for prestressed steel strand anchors in aqueducts offers the advantages of high positioning accuracy, high reusability, convenient disassembly / reassembly, high construction efficiency, and fewer potential quality risks.

[0008] Optionally, a through operating window is provided at the center of the steel formwork.

[0009] This design allows construction workers to directly install, debug, and disassemble the bolted connection between the anchor box and the steel formwork from the inside of the formwork, eliminating the need to work around to the outside of the formwork and significantly simplifying the assembly and dismantling process. Simultaneously, the operating window provides ample space for the threading, positioning, and installation of the anchorages after tensioning of the prestressed steel strands, as well as for the protection during pouring, further enhancing construction convenience and efficiency. Furthermore, it does not affect the original structural strength of the steel formwork or the reserved accuracy of the anchorage installation space, thus helping to ensure construction quality.

[0010] Optionally: The anchor box is a trapezoidal structure, with an anchor box top plate at the top and a box hole in the middle of the top plate. The prestressed steel strands pass through the box hole and the operating window in sequence.

[0011] This design allows the trapezoidal structure to adapt to the actual stress requirements of the anchor installation space, improving the overall structural stability and deformation resistance of the anchor box. The hole in the middle of the top plate of the anchor box can accurately guide and limit the prestressed steel strands, preventing deviation during the threading and tensioning of the prestressed steel strands. Combined with the operating window, it further simplifies the operation process of installing the prestressed steel strands, subsequent anchor installation, and pouring protection, significantly improving construction convenience and efficiency while ensuring the accuracy of the reserved space for anchor installation.

[0012] Optionally: The bottom end of the anchor box has an anchor box base plate, and the anchor box base plate has a through hole adapted to the operation window.

[0013] This design allows the prestressed steel strands to be precisely aligned and threaded through the through holes and the operating window, preventing misalignment or jamming during threading and ensuring the positioning accuracy of the prestressed steel strands. Simultaneously, the through holes and the operating window form a continuous operating channel, facilitating work by construction personnel to connect the anchor boxes, install the anchors, and perform pouring protection from inside the steel formwork. This further simplifies the construction process, improves operational convenience and construction efficiency, and does not affect the reserved space for anchor installation or the overall stability of the device.

[0014] Optionally: the anchor box base plate is attached to the steel template, a plurality of first bolt holes are evenly provided in the circumferential direction of the through hole, a plurality of second bolt holes are provided on the steel template corresponding to the plurality of first bolt holes, and steel plate bolts are connected between the plurality of first bolt holes and the plurality of second bolt holes.

[0015] This design ensures that the connection force between the anchor box and the steel template is evenly distributed along the circumference of the through hole, enhancing the stability of the connection and preventing the anchor box from shifting due to uneven force during construction. This also ensures the accuracy of the reserved space for anchor installation. At the same time, the evenly distributed bolt connection structure facilitates quick installation and disassembly by a single person, further improving construction efficiency without affecting the reusability of the device or the convenience of subsequent anchor installation and pouring protection.

[0016] Optionally, a seal is provided between the aforementioned box hole and hole wall and the outer wall of the aforementioned prestressed steel strand.

[0017] This design effectively prevents impurities such as cement slurry from entering the aforementioned box holes and anchor installation space during concrete pouring, avoiding the impact of impurities on the tensioning effect of the prestressed steel strands and the subsequent installation accuracy of the anchors. At the same time, the sealing components ensure a tight seal between the prestressed steel strands and the aforementioned box holes, reducing potential quality issues caused by residual impurities after construction, further ensuring the quality of the reserved space for anchor installation, and without interfering with the disassembly and reusability of the device.

[0018] Optionally: a first gasket is provided on the inner side of the anchor box bottom plate, and a second gasket is provided on the side of the steel template away from the anchor box. Both the first gasket and the second gasket are fitted onto the threaded rod of the steel plate bolt.

[0019] This design, through the first and second gaskets, buffers the pressure between the anchor box base plate and the steel template contact surface, preventing damage to the anchor box base plate or the steel template surface due to concentrated force when the steel plate bolts are tightened. It also enhances the sealing and stability of the steel plate bolt connection, preventing loosening of the steel plate bolts due to vibration during construction and ensuring the accuracy of the reserved space for anchor installation. Furthermore, the first and second gaskets can disperse the compressive stress of the steel plate bolts on the components, extending the service life of the anchor box and the steel template, without affecting the ease of disassembly and reusability of the device, further improving construction quality and efficiency.

[0020] Optionally: the number of the above-mentioned box holes is consistent with the number of the above-mentioned operating windows of the above-mentioned steel template, and they are set coaxially in a one-to-one correspondence.

[0021] This design ensures that each prestressed steel strand can be precisely positioned along the coaxial box hole and operating window during installation, preventing deviation or mutual interference during installation and guaranteeing the accuracy of prestressed steel strand tensioning and subsequent anchor installation. Simultaneously, the coaxial structure facilitates quick installation of the prestressed steel strands and assembly of the device by construction personnel, simplifying the construction process, improving efficiency, and without affecting the reserved space for anchor installation or the device's detachability and reusability.

[0022] Optionally: The anchor box is made of steel, and the surface of the anchor box near the casting area is a smooth plane.

[0023] This design ensures that the steel material provides sufficient structural strength and deformation resistance for the anchor box during concrete pouring and construction, preventing deviations in the reserved dimensions of the anchor installation space due to stress. The smooth surface reduces adhesion between the concrete and the anchor box after pouring, facilitating quick disassembly of the anchor box without damaging the concrete structure. It also reduces the risk of impurities adhering to the surface, ensuring the accuracy of the reserved space for anchor installation and the quality of construction, while improving the disassembly efficiency and reusability of the device.

[0024] Optionally: the side of the anchor box base plate that is in contact with the steel template is provided with anti-slip texture, and the anti-slip texture extends along the length or width of the anchor box base plate.

[0025] This design increases the friction when the two parts are in contact, effectively preventing the anchor box from shifting due to vibration or external disturbances during construction, thus ensuring the accuracy of the reserved space for anchor installation. At the same time, the anti-slip texture does not affect the tightness of the fit between the anchor box base plate and the steel template, nor does it interfere with the stability of the bolted connection of the steel plate or the ease of disassembly of the subsequent device, further helping to improve construction quality and efficiency. In addition, the device is reusable.

[0026] In summary, the detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts disclosed in this utility model has the advantages of high positioning accuracy of the reserved space for anchorage installation, high reusability, convenient disassembly and assembly, high construction efficiency, and fewer quality risks. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a prestressed steel strand anchorage installation space reserved for a detachable device in an embodiment of the present utility model. Figure 2 This is a schematic diagram of the steel template in an embodiment of the present invention; Figure 3 This is a top view of the anchor box in an embodiment of the present utility model; Figure 4 This is a bottom view of the anchor box in an embodiment of this utility model.

[0029] Icons: 1-Steel formwork, 2-Pouring area, 3-Anchor box, 4-Prestressed steel strand, 5-Operating window, 6-Anchor box top plate, 7-Box hole, 8-Anchor box bottom plate, 9-Through hole, 10-First bolt hole, 11-Second bolt hole, 12-Steel plate bolt, 13-First washer, 14-Second washer. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] Example See Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment proposes a detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts, including a steel template 1; One side of the steel formwork 1 has a pouring area 2, and the pouring area 2 is provided with an anchor box 3. The anchor box 3 is detachably fixed on the side of the steel formwork 1 near the pouring area 2. The pouring area 2 is also equipped with prestressed steel strands 4, with the end of the prestressed steel strands 4 near the steel formwork 1 passing through the anchor box 3 and the steel formwork 1 in sequence.

[0033] In use, the anchor box 3 is first connected and fixed to the steel template 1 with bolts; then the prestressed steel strands 4 are passed through the anchor box 3 and the steel template 1 in sequence. After the device is assembled, concrete is poured into the pouring area 2. At this time, the anchor box 3 and the steel template 1 enclose the space reserved for anchor installation. After the concrete solidifies, the bolts connecting the anchor box 3 and the steel template 1 are removed, and the anchor box 3 is removed from the steel template 1 to obtain a precisely positioned anchor installation space. The prestressed steel strands 4 are then tensioned. After tensioning is completed, the anchor installation and pouring protection construction are carried out through the reserved anchor installation space. After the construction is completed, the anchor box 3 can be recycled and reused for the next reserved anchor installation space operation.

[0034] This embodiment discloses a detachable device for reserving installation space for prestressed steel strand anchors in aqueducts. The device uses a bolted connection between the anchor box 3 and the steel template 1, with the prestressed steel strand 4 passing sequentially through both. The anchor box 3 and the steel template 1 enclose the space for anchor installation. This design ensures precise positioning of the anchor installation space through the accurate connection between the anchor box 3 and the steel template 1, and allows for easy removal of the anchor box 3 after concrete pouring, facilitating anchor protection after tensioning the prestressed steel strand 4. Furthermore, the device has a simple structure, can be operated by a single person, and components such as the anchor box 3 are reusable, significantly reducing labor costs and improving construction efficiency. It also avoids quality problems caused by positioning deviations and inconvenient disassembly in traditional reservation methods, thus improving construction quality and efficiency. Therefore, this detachable device for reserving installation space for prestressed steel strand anchors in aqueducts offers the advantages of high positioning accuracy, high reusability, convenient disassembly and assembly, high construction efficiency, and fewer potential quality risks.

[0035] See Figure 1 , Figure 2 , Figure 3 and Figure 4 A through-hole operation window 5 is provided at the center of the steel formwork 1. The operation window 5 allows construction personnel to directly install, debug, and disassemble the bolt connection between the anchor box 3 and the steel formwork 1 from the inside of the steel formwork 1, without having to go around to the outside of the steel formwork 1, which greatly simplifies the assembly and dismantling process of the device. At the same time, the operation window 5 provides sufficient operating space for the threading, positioning, and installation of anchorages after tensioning of the prestressed steel strands 4 and for the protection of the pouring, which further improves the convenience and efficiency of construction, and does not affect the original structural strength of the steel formwork 1 or the reserved accuracy of the anchorage installation space, thus helping to ensure the construction quality.

[0036] Anchor box 3 has a trapezoidal structure with a top plate 6 at the top. A box hole 7 is opened in the middle of the top plate 6. The prestressed steel strands 4 pass through the box hole 7 and the operating window 5 in sequence. The trapezoidal structure can adapt to the actual stress requirements of the anchor installation space, improving the overall structural stability and deformation resistance of anchor box 3. The box hole 7 in the middle of the top plate 6 can accurately guide and limit the prestressed steel strands 4, avoiding deviation during the installation and tensioning of the prestressed steel strands 4. Combined with the operating window 5, it further simplifies the operation process of installing the prestressed steel strands 4, subsequent anchor installation, and pouring protection. While ensuring the accuracy of the reserved space for anchor installation, it significantly improves the convenience and efficiency of construction.

[0037] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The bottom of the anchor box 3 has an anchor box base plate 8, on which a through hole 9 adapted to the operating window 5 is opened. The through hole 9 allows the prestressed steel strand 4 to be precisely aligned and threaded through the operating window 5, avoiding deviation or jamming during the threading of the prestressed steel strand 4, and ensuring the positioning accuracy of the prestressed steel strand 4. At the same time, the through hole 9 and the operating window 5 form a through operating channel, which facilitates the construction personnel to perform operations such as connecting the anchor box 3, installing the anchor, and pouring protection from the inside of the steel formwork 1, further simplifying the construction process, improving the convenience of operation and construction efficiency, and without affecting the reserved quality of the anchor installation space and the overall stability of the device.

[0038] The anchor box base plate 8 is fitted to the steel template 1. Several first bolt holes 10 are evenly opened around the circumference of the through hole 9. Several second bolt holes 11 are opened on the steel template 1 corresponding to the several first bolt holes 10. Steel plate bolts 12 are connected between the several first bolt holes 10 and the several second bolt holes 11. This allows the connection force between the anchor box 3 and the steel template 1 to be evenly distributed around the circumference of the through hole 9, enhancing the stability of the connection between the two and preventing the anchor box 3 from shifting due to uneven force during construction, thus ensuring the accuracy of the reserved position of the anchor installation space. At the same time, the evenly distributed bolt connection structure facilitates the quick installation and disassembly operations by a single person, further improving construction efficiency, and does not affect the reusability of the device or the convenience of subsequent installation and pouring protection of the anchor.

[0039] There is a seal (not shown in the figure) between the box hole 7 and the hole wall and the outer wall of the prestressed steel strand 4. This effectively prevents impurities such as cement slurry from entering the box hole 7 and the reserved space for anchor installation during the concrete pouring process, avoiding the impact of impurities on the tensioning effect of the prestressed steel strand 4 and the subsequent installation accuracy of the anchor. At the same time, the seal can ensure a tight seal between the prestressed steel strand 4 and the box hole 7, reducing the quality risks caused by impurities after construction, further ensuring the quality of the reserved space for anchor installation, and not interfering with the disassembly and reusability of the device.

[0040] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The anchor box base plate 8 has a first washer 13 on its inner side and a second washer 14 on the side of the steel template 1 away from the anchor box 3. Both the first washer 13 and the second washer 14 are fitted onto the threaded rod of the steel plate bolt 12. The first washer 13 and the second washer 14 buffer the pressure on the contact surface between the anchor box base plate 8 and the steel template 1, preventing damage to the surface of the anchor box base plate 8 or the steel template 1 due to concentrated force when the steel plate bolt 12 is tightened. At the same time, they enhance the sealing and stability of the connection of the steel plate bolt 12, prevent the steel plate bolt 12 from loosening due to vibration during construction, and ensure the accuracy of the reserved position of the anchor installation space. In addition, the first washer 13 and the second washer 14 can also disperse the compressive stress of the steel plate bolt 12 on the components, extend the service life of the anchor box 3 and the steel template 1, and do not affect the ease of disassembly and reusability of the device, further improving the construction quality and efficiency.

[0041] The number of box holes 7 is the same as the number of operating windows 5 of steel formwork 1, and they are set coaxially in a one-to-one correspondence. This ensures that each prestressed steel strand 4 can be accurately positioned along the coaxial box holes 7 and operating windows 5 when it is threaded through, avoiding deviation or mutual interference of the prestressed steel strand 4 during threading, and ensuring the accuracy of prestressed steel strand 4 tensioning and subsequent anchor installation. At the same time, the corresponding coaxial structure makes it easy for construction personnel to quickly complete the threading of prestressed steel strand 4 and the assembly of the device, simplifying the construction process, improving construction efficiency, and without affecting the quality of the reserved space for anchor installation and the disassembly and reuse performance of the device.

[0042] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The anchor box 3 is made of steel. The surface of the anchor box 3 near the pouring area 2 is a smooth plane. The steel material can ensure that the anchor box 3 has sufficient structural strength and deformation resistance during concrete pouring and construction, avoiding deviation of the reserved size of the anchor installation space due to stress. The smooth plane can reduce the adhesion between the concrete and the anchor box 3 after pouring, making it easier to quickly disassemble the anchor box 3 without damaging the concrete structure during disassembly. At the same time, it reduces the risk of impurities adhering, ensuring the reserved accuracy of the anchor installation space and the construction quality, while improving the disassembly efficiency and reusability of the device.

[0043] The side of the anchor box base plate 8 that is in contact with the steel template 1 is provided with anti-slip texture (not shown in the figure). The anti-slip texture extends along the length or width of the anchor box base plate 8. The anti-slip texture increases the friction when the two are in contact, effectively preventing the anchor box 3 from shifting due to vibration or external disturbance during construction, and ensuring the accuracy of the reserved position of the anchor installation space. At the same time, the anti-slip texture does not affect the tightness of the fit between the anchor box base plate 8 and the steel template 1, nor does it interfere with the stability of the steel plate bolt 12 connection and the ease of disassembly of the subsequent device, further helping to improve the construction quality and efficiency, and the device is reusable.

[0044] See Figure 1 , Figure 2 , Figure 3 and Figure 4In this embodiment, the anchor box 3 can be of several shapes, such as cuboids, trapezoids, etc., to adapt to the installation requirements of the anchorage for the prestressed steel strand 4 in the aqueduct. Regardless of the shape, the anchor box 3 must meet the requirement of stable connection with the steel template 1. It is detachably fixed by passing the steel plate bolts 12 through the first bolt hole 10 of the anchor box bottom plate 8 and the corresponding second bolt hole 11 of the steel template 1. At the same time, a box hole 7 for the prestressed steel strand 4 to pass through must be reserved to ensure that the steel strand can pass smoothly through the through hole 9 and the operating window 5. After the anchor box 3 is attached to the steel template 1, it must form a reserved space for anchorage installation with a suitable size so that after the concrete is poured, the anchor box 3 can be removed to obtain a precise anchorage installation area, ensuring the smooth progress of subsequent steel strand tensioning, anchorage installation and pouring protection, while taking into account the characteristics of single-person operation and reusability of the device.

[0045] See Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment, the anchor box 3 is first connected and fixed to the steel template 1 by steel plate bolts 12, ensuring that the bottom plate 8 of the anchor box is tightly fitted to the steel template 1, so that the box hole 7 on the anchor box 3 is precisely aligned with the operating window 5 on the steel template 1; then the prestressed steel strand 4 is passed through the box hole 7 and the operating window 5 in sequence. After the device is assembled, concrete is poured into the pouring area 2. At this time, the anchor box 3 and the steel template 1 enclose the space reserved for anchor installation; after the concrete solidifies, the steel plate bolts 12 connecting the anchor box 3 and the steel template 1 are removed, and the anchor box 3 is removed from the steel template 1, thus obtaining the anchor installation space with precise position; then the prestressed steel strand 4 is tensioned. After tensioning is completed, the anchor installation and pouring protection construction are carried out through the reserved anchor installation space. After the construction is completed, the anchor box 3 can be recycled and reused for the next reserved anchor installation space operation.

[0046] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The specific operating principle of the detachable device reserved in the installation space of the prestressed steel strand anchorage in the aqueduct in this embodiment is as follows: Using steel formwork 1 as the base, anchor box 3 is detachably connected to steel formwork 1 by passing steel plate bolts 12 through the first bolt hole 10 and the second bolt hole 11, allowing anchor box 3 to be stably attached to steel formwork 1. The two together form a reserved space for accommodating anchors. Then, prestressed steel strands 4 are sequentially passed through the box hole 7, through hole 9 and operating window 5. After the device is assembled, concrete is poured into the pouring area 2. The size and position of the reserved space are fixed by the structural shape of anchor box 3. After the concrete has solidified, the steel plate bolts 12 connecting anchor box 3 and steel formwork 1 are removed, and anchor box 3 can be separated from steel formwork 1. At this time, a precisely positioned anchor installation space is formed in the concrete structure. The tensioning of prestressed steel strands 4 can be completed through this reserved space. After tensioning, anchor installation and pouring protection construction can be carried out conveniently based on the reserved installation space. Moreover, the disassembled anchor box 3 can be reused for the next reserved work of anchor installation space.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts, characterized in that: Including steel formwork (1); The steel formwork (1) has a pouring area (2) on one side, and the pouring area (2) is provided with an anchor box (3). The anchor box (3) is detachably fixed on the side of the steel formwork (1) near the pouring area (2). The pouring area (2) is also provided with prestressed steel strands (4), and the end of the prestressed steel strands (4) near the steel formwork (1) passes through the anchor box (3) and the steel formwork (1) in sequence.

2. The detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts according to claim 1, characterized in that: A through operating window (5) is provided at the center of the steel formwork (1).

3. The detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts according to claim 2, characterized in that: The anchor box (3) has a trapezoidal structure. The top of the anchor box (3) has an anchor box top plate (6). The top plate (6) has a box hole (7) in the middle. The prestressed steel strand (4) passes through the box hole (7) and the operating window (5) in sequence.

4. The detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts according to claim 2, characterized in that: The bottom end of the anchor box (3) has an anchor box bottom plate (8), and the anchor box bottom plate (8) has a through hole (9) adapted to the operation window (5).

5. The detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts according to claim 4, characterized in that: The anchor box base plate (8) is attached to the steel template (1). A plurality of first bolt holes (10) are evenly provided in the circumferential direction of the through hole (9). A plurality of second bolt holes (11) are provided on the steel template (1) corresponding to the plurality of first bolt holes (10). Steel plate bolts (12) are connected between the plurality of first bolt holes (10) and the plurality of second bolt holes (11).

6. The detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts according to claim 3, characterized in that: The box hole (7) and the hole wall have a seal between them and the outer wall of the prestressed steel strand (4).

7. A detachable device for reserving installation space of a prestressed steel strand anchorage in an aqueduct according to claim 5, characterized in that: The anchor box base plate (8) is provided with a first gasket (13) on its inner side, and the steel template (1) is provided with a second gasket (14) on the side away from the anchor box (3). The first gasket (13) and the second gasket (14) are both sleeved on the thread of the steel plate bolt (12).

8. The detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts according to claim 3, characterized in that: The number of the box holes (7) is the same as the number of the operation windows (5) of the steel template (1), and they are coaxially arranged in a one-to-one correspondence.

9. A detachable device for reserving installation space of prestressed steel strand anchorage in aqueducts according to claim 1, characterized in that: The anchor box (3) is made of steel, and the surface of the anchor box (3) near the casting area (2) is a smooth plane.

10. A detachable device for reserving installation space of a prestressed steel strand anchorage in an aqueduct according to claim 4, characterized in that: The anchor box base plate (8) has anti-slip texture on the side that is in contact with the steel template (1), and the anti-slip texture extends along the length or width of the anchor box base plate (8).

Images