Three-section type water stop pull rod and bridge wet joint water stop pull rod formwork hanging device
By adopting a three-stage water stop pull rod design, combined with water stop plate, conical nut and butterfly card, the problem of unsatisfactory sealing of the traditional hanging mold method is solved, effectively blocking the seepage channel, and improving the waterproof performance and durability of the bridge.
Patent Information
- Application Number
- CN202421586490.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-05
AI Technical Summary
During the construction of traditional hanging mold method, the tie rod is not blocked ideally, resulting in common water seepage quality problems in the wet joints of the bridge, which seriously affects the life and durability of the bridge.
The three-stage water stop pull rod design is adopted, including a middle tie rod and a removable connection of upper and lower pull rods. The middle of the middle tie rod is fixedly equipped with a water stop piece, and a conical nut and butterfly card are structured to improve the overall strength and stability of the tie rod, ensuring that the water stop piece effectively blocks the water seepage channel.
It improves construction efficiency, adapts to different wet joint lengths, effectively blocks seepage channels, improves waterproof performance, and reduces corrosion and damage caused by water seepage.
Smart Images
Figure CN222758744U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge pier construction, in particular to a three-section water-stopping tie rod and a bridge wet joint water-stopping tie rod hanging formwork device. Background Art
[0002] Wet joints mainly refer to the post-cast concrete between prefabricated slab beams in bridge engineering, that is, grouting construction, which connects two slab beams and is carried out after the slab beams are installed and before the bridge deck is paved. During the wet joint construction process, the construction quality of the wet joints directly affects the force mode and service life of the bridge. Except for the wet joints of the cast-in-place section of the continuous beam bridge deck from the casting formwork, the rest of the concrete bridge decks are cast-in-place and overlapped with the steel beams in the factory before leaving the factory.
[0003] However, the traditional hanging formwork construction method uses a combination of square wood and bamboo plywood bottom formwork, a distribution beam is set on the top of the beam, and the tie rods use full-thread tie rods and PVC sleeves. After the concrete pouring is completed, the full-thread tie rods are removed and the PVC holes are sealed with micro-expansion grouting materials. However, the sealing effect is far from ideal. Often, there is a common quality problem of water seepage after the bridge is opened to traffic, which seriously affects the life and durability of the bridge. Utility Model Content
[0004] The utility model provides a three-section water-stopping tie rod and a bridge wet joint water-stopping tie rod hanging mold device, which can solve the problems of unsatisfactory tie rod sealing and poor water-stopping effect in the prior art.
[0005] According to the utility model, a three-section water-stopping tie rod and a bridge wet joint water-stopping tie rod hanging formwork device include: a middle tie rod and an upper tie rod and a lower tie rod arranged at both ends of the middle tie rod, and the ends of the upper tie rod and the lower tie rod close to the middle tie rod are detachably connected to the middle tie rod.
[0006] The provision of the three-section water-stop pull rod in the utility model facilitates assembly and disassembly, thereby improving construction efficiency; the three-section design enables the pull rod length to be adjustable to adapt to different wet joint lengths.
[0007] Preferably, a water stop plate is fixedly provided at the middle portion of the center pull rod.
[0008] In the utility model, the water-stopping sheet is provided to effectively block the water seepage channel, improve the waterproof performance, and reduce the corrosion and damage caused by the water seepage.
[0009] Preferably, both ends of the middle tie rod have conical nuts threadedly connected to the upper tie rod and the lower tie rod, the conical nuts are fixed to both ends of the middle tie rod, and the diameter of the end of the conical nut away from the water stop plate is larger than the diameter of the end of the conical nut close to the water stop plate.
[0010] In the utility model, the conical nuts are fixed to the ends of the middle tie rod, thereby improving the overall strength and stability of the tie rod. The conical nuts make the upper tie rod and the lower tie rod more stable when connected to the middle tie rod and are not easy to loosen.
[0011] Preferably, a butterfly clip is provided at one end of the upper pull rod away from the middle pull rod, two steel pipes for supporting the casting formwork are provided at the center of one end of the butterfly clip close to the middle pull rod, and a double nut threadedly connected to the upper pull rod is provided at one end of the butterfly clip away from the middle pull rod.
[0012] In the utility model, the butterfly clip is provided to facilitate the fixation and adjustment of the upper pull rod, and the provision of the two steel pipes enhances the supporting force and stability of the upper pull rod. The pull rod is tightened by continuously tightening the double nuts to ensure that the wet joint formwork and the flange plate of the steel plate composite beam are in close contact with each other without leakage, thereby avoiding concrete misalignment.
[0013] Preferably, a bending piece is provided at both ends of the butterfly card, and an installation groove for installing the bending piece is provided at the side walls at both ends of the butterfly card. The side walls at both ends of the installation groove extend outward to form a straight groove, and a spring is provided at the straight groove. Fixed blocks are provided at the edges of the side walls at both ends of the bending piece away from the opening of the installation groove, and the fixed blocks are used to cooperate with the springs.
[0014] In the utility model, the butterfly card can adapt to steel pipes of different specifications through the arrangement of the bending piece and the installation groove in the butterfly card, so that the butterfly card can be convenient for rapid replacement and maintenance at the construction site.
[0015] Preferably, a steel plate is provided at one end of the lower tie rod away from the middle tie rod, and a double nut threadedly connected to the lower tie rod is provided at one end of the steel plate away from the middle tie rod.
[0016] In the utility model, the supporting force and stability of the lower pull rod are enhanced by the arrangement of the steel pad, so that the lower pull rod is more evenly stressed, and the arrangement of the double nuts facilitates the fastening and disassembly of the lower pull rod.
[0017] Preferably, the outer diameter of the water stop plate is greater than the outer diameter of the conical nut.
[0018] In the utility model, the larger diameter of the water stop plate ensures that the water stop plate can effectively block the water seepage channel, and can reduce the risk of water seepage together with the larger outer diameter of the conical nut.
[0019] The utility model also includes a wet joint water-stopping tie rod hanging mold device, which includes a three-section water-stopping tie rod and a bamboo glue template, wherein a plurality of first square woods and a plurality of second square woods are arranged at the lower end of the bamboo glue template, and the first square woods and the second square woods are vertically arranged.
[0020] The bamboo glue formwork and the square wood of the utility model can provide stable support and fix the casting formwork, thereby improving the efficiency and quality of the construction.
[0021] Preferably, the steel pad abuts against the end of the second square wood away from the bamboo plywood formwork, the conical nut of the lower section of the middle pull rod abuts against the end of the bamboo plywood away from the steel pad, and the lower pull rod vertically passes through the middle gaps of multiple first square woods and the middle gaps of multiple second square woods installed at the lower end of the bamboo plywood formwork.
[0022] In the utility model, the conical nut is arranged to abut against the end of the bamboo plywood away from the steel pad, which can play the role of internal support and external pulling, ensuring that the square wood is pressed tightly under the wet joint, thereby ensuring the casting quality of the wet joint. Through the arrangement of the position relationship between the first square wood and the second square wood and the lower pull rod, the lower pull rod can be fixed on the casting template, providing better fastening effect and construction stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the wet joint water-stop tie rod hanging formwork device.
[0024] Figure 2 It is a side view of the wet joint waterstop tie rod hanging formwork device.
[0025] Figure 3 This is the front view of the wet joint waterstop tie rod hanging formwork device.
[0026] Figure 4 This is a schematic diagram of a three-section water-stop pull rod.
[0027] Figure 5 This is a schematic diagram of a butterfly card.
[0028] Figure 6 This is a cross-sectional view of a butterfly card. DETAILED DESCRIPTION
[0029] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.
[0030] Example 1
[0031] like Figure 1 - As shown in Figure 6, this embodiment provides a three-section water-stop tie rod and a bridge wet joint water-stop tie rod hanging formwork device, which includes: a middle tie rod 100 and an upper tie rod 200 and a lower tie rod 300 arranged at both ends of the middle tie rod 100, and the upper tie rod 200 and the lower tie rod 300 are detachably connected to the middle tie rod 100 at one end close to the middle tie rod 100.
[0032] The provision of a three-section water-stop tie rod in this embodiment facilitates assembly and disassembly, thereby improving construction efficiency. The three-section design allows the tie rod length to be adjustable to accommodate different wet joint lengths.
[0033] In this embodiment, a water stop plate 110 is fixedly disposed at the middle portion of the middle tie rod 100 .
[0034] By providing the water stop sheet 110 in this embodiment, the water seepage channel is effectively blocked, the waterproof performance is improved, and the corrosion and damage caused by water seepage are reduced.
[0035] In this embodiment, both ends of the middle tie rod 100 are provided with conical nuts 120 that are threadedly connected to the upper tie rod 200 and the lower tie rod 300. The conical nuts 120 are fixed to the two end portions of the middle tie rod 100. The diameter of the end of the conical nut 120 away from the water stop plate 110 is larger than the diameter of the end of the conical nut 120 close to the water stop plate 110.
[0036] By setting the conical nut 120 in this embodiment to be fixedly connected to the two end portions of the middle tie rod 100, the overall strength and stability of the middle tie rod 100 are improved. The setting of the conical nut 120 makes the upper tie rod 200 and the lower tie rod 300 more stable when connected to the middle tie rod 100 and less likely to loosen.
[0037] In this embodiment, a butterfly clip 210 is provided at the end of the upper pull rod 200 away from the middle pull rod 100, and two steel pipes 220 for supporting the casting formwork are provided at the center of the end of the butterfly clip 210 close to the middle pull rod 100, and a double nut 230 threadedly connected to the upper pull rod 200 is provided at the end of the butterfly clip 210 away from the middle pull rod 100.
[0038] The butterfly card 210 in this embodiment is provided to facilitate the fixation and adjustment of the upper pull rod 200. The two steel pipes 220 enhance the supporting force and stability of the upper pull rod 200. The double nuts 230 are continuously tightened to tighten the water stop pull rod, ensuring that the wet joint formwork is tightly attached to the flange plate of the steel plate composite beam without leakage, thereby avoiding concrete misalignment.
[0039] In this embodiment, a bending piece 211 is provided at both ends of the butterfly card 210, and an installation groove 212 for installing the bending piece 211 is provided at the side walls at both ends of the butterfly card 210. The side walls at both ends of the installation groove 212 extend outward to form a straight groove 213, and a spring 214 is provided at the straight groove 213. Fixed blocks 2111 are provided at the edges of the side walls at both ends of the bending piece 211 away from the opening of the installation groove 213, and the fixed blocks 2111 are used to cooperate with the spring 214.
[0040] Through the arrangement of the bending piece 211, the mounting groove 212 and the spring 213 in the butterfly card 210 in this embodiment, the butterfly card 210 can adapt to steel pipes of different specifications, which is convenient for rapid replacement and maintenance at the construction site. The arrangement of the straight groove 213 enables the bending piece 210 to be stably extended.
[0041] In this embodiment, a steel plate 310 is provided at one end of the lower tie rod 300 away from the middle tie rod 100 , and a double nut 230 threadedly connected to the lower tie rod 300 is provided at one end of the steel plate 310 away from the middle tie rod 100 .
[0042] By providing the steel pad 310 in this embodiment, the supporting force and stability of the lower pull rod 300 are enhanced, so that the lower pull rod 300 is more evenly stressed. The provision of the double nut 230 facilitates the fastening and disassembly of the lower pull rod 300.
[0043] In this embodiment, the outer diameter of the water stop plate 110 is greater than the outer diameter of the conical nut 120 .
[0044] The larger diameter of the water stop plate 110 in this embodiment ensures that the water stop plate 110 can effectively block the water seepage channel, and can reduce the risk of water seepage together with the larger outer diameter of the conical nut 120.
[0045] In this embodiment, a wet joint water-stopping tie rod hanging formwork device is also included, which includes a three-section water-stopping tie rod and a bamboo glue template 400, wherein a plurality of first square timbers 410 and a plurality of second square timbers 420 are provided at the lower end of the bamboo glue template 400, and the first square timbers 410 and the second square timbers 420 are vertically arranged.
[0046] By providing the bamboo glue formwork 400 and a plurality of square timbers in this embodiment, it is possible to provide a stable support and fix the casting formwork, thereby improving the efficiency and quality of the construction.
[0047] In this embodiment, the steel pad 310 abuts against the end of the second square wood 420 away from the bamboo glue formwork 400, the conical nut 120 of the lower section of the middle pull rod 100 abuts against the end of the bamboo glue formwork 400 away from the steel pad 310, and the lower pull rod 300 vertically passes through the middle gaps of multiple first square woods 410 and the middle gaps of multiple second square woods 420 installed at the lower end of the bamboo glue formwork 400.
[0048] By setting the conical nut 120 in this embodiment to abut against the end of the bamboo glue formwork 400 away from the steel pad 310, it can play the role of internal support and external pulling, ensuring that the square timber is pressed tightly under the wet joint, thereby ensuring the casting quality of the wet joint. By setting the positional relationship between the first square timber 410 and the second square timber 420 and the lower pull rod 300, the lower pull rod 300 can be fixed on the casting formwork, providing better fastening effect and construction stability.
[0049] When this embodiment is in use, after the welding of the steel plate composite beam is completed and passed the acceptance, the flange plates of the steel plate composite beam on both sides of the wet joint are roughened, and the wet joint steel bars are tied. According to the length of the wet joint, the upper tie rod 200, the lower tie rod 300 and the middle tie rod 100 of suitable sizes are customized, and the integrated tie rod of the middle tie rod 100, the conical nut 120 and the water stop plate 110 is installed and temporarily fixed in the wet joint steel bars. Ensure that the outer diameter of the water stop sheet 110 is greater than the outer diameter of the tapered nut 120 to effectively block the water seepage channel, and install the bottom mold system including the bamboo glue formwork 400, the first square wood 410, and the second square wood 420 at the bottom of the wet joint of the steel plate composite beam. The lower end of the bamboo glue formwork 400 is installed with three first square woods 410 arranged along the length direction of the bamboo glue formwork 400 and multiple second square woods 420 arranged along the width direction of the bamboo glue formwork 400. The lower pull rod 300 and the upper pull rod 200 are installed synchronously to ensure that the lower pull rod 300 vertically passes through the middle of the first square wood 410 and the second square wood 420 installed at the lower end of the bamboo glue formwork 400, the steel pad 310 abuts against the end of the second square wood 420 away from the bamboo glue formwork 400, and the tapered nut 120 of the lower section of the middle pull rod 100 abuts against the bamboo. The rubber formwork 400 is away from one end of the steel pad 340 to ensure the stability of the entire hanging formwork device. From the end of the upper pull rod 200 away from the middle pull rod 100 to the other end of the lower pull rod 300 away from the middle pull rod 100, the upper pull rod 200 and the lower pull rod 300 are fine-tuned and tightened in turn, and the butterfly clip 210 in the upper pull rod 200 is adjusted. By pulling out the bent part 210, it is clamped on the two steel pipes 220. The two steel pipes 220 are abutted against the steel plate composite beam and are tightened by double nuts 230 to ensure that the wet joint formwork is tightly attached to the steel plate composite beam without leakage and to avoid concrete misalignment. After the wet joint concrete strength meets the design requirements, the lower pull rod 300 and the bottom formwork system and the upper pull rod 200 are removed, and the hollow of the conical nut 120 is filled tightly with epoxy resin to ensure the water-stopping effect.
[0050] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.
[0051] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.
Claims
1. A three-section water-stop pull rod, characterized in that: It comprises a middle pull rod (100) and an upper pull rod (200) and a lower pull rod (300) arranged at two ends of the middle pull rod (100); one end of the upper pull rod (200) and the lower pull rod (300) close to the middle pull rod (100) is detachably connected to the middle pull rod (100).
2. A three-section water-stop pull rod according to claim 1, characterized in that: A water stop plate (110) is fixedly arranged at the middle portion of the middle pull rod (100).
3. The three-section water-stop pull rod according to claim 1, characterized in that: Both ends of the middle tie rod (100) are provided with conical nuts (120) threadedly connected to the upper tie rod (200) and the lower tie rod (300). The conical nuts (120) are fixed to the two end portions of the middle tie rod (100). The diameter of the end of the conical nut (120) away from the water stop plate (110) is larger than the diameter of the end of the conical nut (120) close to the water stop plate (110).
4. The three-section water-stop pull rod according to claim 1, characterized in that: A butterfly clip (210) is provided at one end of the upper tie rod (200) away from the middle tie rod (100), two steel pipes (220) for supporting the casting template are provided at the center of one end of the butterfly clip (210) close to the middle tie rod (100), and a double nut (230) threadedly connected to the upper tie rod (200) is provided at one end of the butterfly clip (210) away from the middle tie rod (100).
5. The three-section water-stop pull rod according to claim 4, characterized in that: The butterfly card (210) is provided with a bent piece (211) at both ends, and a mounting groove (212) for mounting the bent piece (211) is provided at the side walls at both ends of the butterfly card (210), and the side walls at both ends of the mounting groove (212) extend outwards to form a straight groove (213), and a spring (214) is provided at the straight groove (213), and fixed blocks (2111) are provided at the edges of the side walls at both ends of the bent piece (211) away from the opening of the mounting groove (212), and the fixed blocks (2111) are used to cooperate with the spring (214).
6. The three-section water-stop pull rod according to claim 1, characterized in that: A steel pad (310) is provided at one end of the lower tie rod (300) away from the middle tie rod (100), and a double nut (230) threadedly connected to the lower tie rod (300) is provided at one end of the steel pad (310) away from the middle tie rod (100).
7. The three-section water-stop pull rod according to claim 2, characterized in that: The outer diameter of the water stop plate (110) is greater than the outer diameter of the conical nut (120).
8. A bridge wet joint water-stop tie rod hanging formwork device, comprising a three-section water-stop tie rod as claimed in any one of claims 1 to 7, characterized in that: It also comprises a bamboo glue template (400), wherein a plurality of first square timbers (410) and a plurality of second square timbers (420) are arranged at the lower end of the bamboo glue template (400), and the first square timbers (410) and the second square timbers (420) are arranged vertically.
9. A bridge wet joint water-stop tie rod hanging formwork device according to claim 8, characterized in that: The steel pad (310) abuts against one end of the second square wood (420) away from the bamboo glue template (400), the conical nut (120) of the lower section of the middle pull rod (100) abuts against one end of the bamboo glue template (400) away from the steel pad (310), and the lower pull rod (300) vertically passes through the middle gaps of multiple first square woods (410) and the middle gaps of multiple second square woods (420) installed at the lower end of the bamboo glue template (400).