A UHPC construction formwork and a construction mechanism for marine bridge piers.

Abstract

This utility model discloses a UHPC construction template, including a template sleeve and steel connectors connected to both ends of the template sleeve. The template sleeve includes an inner fiberglass sleeve and an outer protective sleeve connected sequentially from the inside to the outside. Multiple first stiffening ribs are spaced apart on the outer wall of the inner fiberglass sleeve. Clearances are provided on the outer protective sleeve corresponding to the first stiffening ribs. The steel connectors include a web and inner and outer wing plates respectively connected to both sides of the web. The inner wing plates are sealed to the inner fiberglass sleeve. A construction mechanism for marine bridge piers incorporating the aforementioned UHPC construction template is also provided. By using first stiffening ribs to enhance the compressive strength of the inner fiberglass sleeve, and using an outer protective sleeve to protect the inner fiberglass sleeve from mechanical damage during construction, and further using steel connectors to connect and reinforce the joints of the fiberglass sleeves with steel structures, the construction difficulty and cost can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of bridge pier construction technology, and in particular to a UHPC construction template and a construction mechanism for marine bridge piers. Background Technology

[0002] Harbor piers are exposed to harsh marine environments, suffering from seawater erosion, freeze-thaw cycles, and even ship collisions, leading to structural degradation and reduced durability. Traditional reinforcement methods have many drawbacks; for example, ordinary concrete reinforcement is ineffective against the complex marine environment, and some reinforcement materials involve complex construction processes, long construction periods, high costs, and significant disturbance to the original structure. Ultra-high performance concrete (UHPC), with its high strength, high durability, and high impermeability, is gaining attention in the field of harbor pier reinforcement. However, when using UHPC for reinforcement, suitable formwork is needed to ensure the quality of UHPC casting and construction efficiency. Currently, there is a lack of efficient and reliable formwork and construction methods specifically designed for UHPC reinforcement of harbor piers.

[0003] To address the aforementioned technical problems, existing technologies, such as the UHPC construction device for reinforcing offshore bridge piers disclosed in patent application number CN202210454564.7, relate to the field of bridge pier construction technology. This device includes two first splicing templates, with second splicing modules on both sides of each template. Limiting sliding columns are installed on the surfaces of both the first and second splicing templates. A first moving groove is formed inside the first splicing template, and a first moving template is slidably connected within this groove. Similarly, a second moving groove is formed inside the second splicing module, and a second moving template is slidably connected within this groove. Adjustment grooves and adjustment slots are formed on the surfaces of both the first and second splicing templates. This technical solution has the advantages of enabling offshore bridge pier reinforcement work and improving the strength of reinforced and repaired offshore bridge piers.

[0004] However, the above technical solutions still have technical drawbacks: they have many moving parts, are more complicated to operate, and may increase the failure rate and maintenance costs; the entire set of equipment uses steel structures, which are costly and heavy, requiring special lifting equipment and increasing the difficulty of offshore operations. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a UHPC construction formwork and a construction mechanism for marine bridge piers, which can reduce construction difficulty and cost.

[0006] This utility model also proposes a marine bridge pier construction mechanism with the above-mentioned UHPC construction template.

[0007] According to a first aspect of the present invention, a UHPC construction template includes a template sleeve and steel connectors connected to both ends of the template sleeve. The template sleeve includes an inner fiberglass sleeve and an outer protective sleeve connected sequentially from the inside to the outside. A plurality of first stiffening ribs are spaced apart on the outer wall of the inner fiberglass sleeve. Clearances are provided on the outer protective sleeve corresponding to the first stiffening ribs. The steel connectors include a web and an inner wing plate and an outer wing plate respectively connected to both sides of the web plate. The inner wing plate is sealed to the inner fiberglass sleeve.

[0008] The UHPC construction template according to the present utility model has at least the following beneficial effects: by using the first stiffening rib to enhance the compressive strength of the inner fiberglass sleeve, and at the same time using the outer protective sleeve to protect the inner fiberglass sleeve from mechanical damage during construction, and by using steel connectors to connect and strengthen the splice joints of the fiberglass sleeve with steel structures, the construction difficulty and cost can be effectively reduced.

[0009] According to some embodiments of the present invention, the first stiffening ribs are connected at uniform intervals along the circumferential direction of the inner fiberglass sleeve.

[0010] According to some embodiments of the present invention, the cross-sectional shape of the first stiffening rib is trapezoidal.

[0011] According to some embodiments of the present invention, a second stiffening rib is connected to the web plate.

[0012] According to some embodiments of the present invention, the second stiffening rib is a ring structure and is connected around the web.

[0013] According to some embodiments of the present invention, a plurality of grooves are evenly spaced on the outer wall of the inner fiberglass sleeve, and a first notch is formed through the grooves toward the end of the inner fiberglass sleeve. A second notch is correspondingly formed on the inner wing plate of the steel connector. A first reinforcing connector is embedded in the groove. A limiting seat with a through hole is connected to the side of the inner wing plate facing the outer wing plate. One end of the first reinforcing connector passes through the first notch, the second notch and the through hole of the limiting seat in sequence and is fixedly connected to the limiting seat.

[0014] According to some embodiments of the present invention, the first reinforcing connector includes a rubber sleeve, a first bolt, and a first nut. One end of the first bolt is located in the groove, and the other end of the first bolt passes through the first notch, the second notch, and the through hole of the limiting seat in sequence, and is fixedly connected to the limiting seat by the first nut. The rubber sleeve is hollow and is sleeved on the portion of the first bolt located in the first notch and the second notch.

[0015] According to a second aspect of the present invention, a marine bridge pier construction mechanism includes multiple UHPC construction templates, which are connected end-to-end along the length direction.

[0016] According to some embodiments of the present invention, the marine bridge pier construction mechanism further includes a positioning structure, which includes a concave portion and a convex portion, wherein the concave portion and the convex portion are distributed and spaced apart on the opposite surfaces of two adjacent outer wing plates.

[0017] According to some embodiments of the present invention, a plurality of third notches are evenly provided on the outer wing plate of the steel connector, and two adjacent outer wing plates are fixedly connected by a second reinforcing connector.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a structural schematic diagram of a UHPC construction template according to an embodiment of the present utility model.

[0021] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0022] Figure 3 This is a schematic diagram of the connection structure of two adjacent steel connectors in a marine bridge pier construction mechanism according to an embodiment of the present invention.

[0023] 100. Template sleeve; 110. Inner fiberglass sleeve; 111. First stiffening rib; 112. Groove; 113. First notch; 120. Outer protective sleeve; 121. Clearance; 200. Steel connector; 210. Web plate; 211. Second stiffening rib; 220. Inner wing plate; 221. Second notch; 230. Outer wing plate; 231. Third notch; 310. First reinforcing connector; 311. Rubber sleeve; 312. First bolt; 313. First nut; 320. Limiting seat; 330. Second reinforcing connector; 331. Second bolt; 332. Second nut. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] refer to Figure 1 as well as Figure 2As shown, the UHPC construction template according to an embodiment of the present invention includes a template sleeve 100 and steel connectors 200 connected to both ends of the template sleeve 100. The template sleeve 100 includes an inner fiberglass sleeve 110 and an outer protective sleeve 120 connected sequentially from the inside to the outside. A plurality of first stiffening ribs 111 are spaced apart on the outer wall of the inner fiberglass sleeve 110. The outer protective sleeve 120 has clearance positions 121 corresponding to the first stiffening ribs 111. The steel connectors 200 include a web plate 210 and an inner wing plate 220 and an outer wing plate 230 respectively connected to both sides of the web plate 210. The inner wing plate 220 is sealed to the inner fiberglass sleeve 110.

[0029] In practical use, the first stiffening rib 111 enhances the compressive strength of the inner fiberglass sleeve 110, while the outer protective sleeve 120 protects the inner fiberglass sleeve 110 from mechanical damage during construction. Furthermore, the steel connector 200 connects and reinforces the splice joints of the fiberglass sleeves with steel structures, which effectively reduces construction difficulty and cost.

[0030] In some specific embodiments of this utility model, it may also have the following additional technical features: the first stiffening ribs 111 are evenly spaced along the circumferential direction of the inner fiberglass sleeve 110.

[0031] In some specific embodiments of this utility model, it may also have the following additional technical features: the cross-sectional shape of the first stiffening rib 111 is trapezoidal.

[0032] Specifically, the inner fiberglass sleeve 110 is made of high-strength fiberglass fabric and high-performance resin through a winding process, possessing excellent mechanical properties and corrosion resistance. First stiffening ribs 111 are uniformly arranged circumferentially on the outer surface of the inner fiberglass sleeve 110. These first stiffening ribs 111 are integrally molded from the same fiberglass fabric and high-performance resin as the inner fiberglass sleeve 110, and have a trapezoidal cross-sectional shape, significantly improving the compressive strength of the inner fiberglass sleeve 110. The spacing between adjacent first stiffening ribs 111 is determined based on the casting pressure of UHPC. The outer protective sleeve 120 is made of rubber, possessing a certain degree of flexibility and wear resistance, used to protect the inner fiberglass sleeve 110 from mechanical damage during construction.

[0033] In some specific embodiments of this utility model, it may also have the following additional technical features: a second stiffening rib 211 is connected to the web plate 210.

[0034] In some specific embodiments of this utility model, it may also have the following additional technical features: the second stiffening rib 211 is a ring structure and is connected around the web plate 210.

[0035] The second stiffening rib 211 is set to ensure that the joint does not deform.

[0036] In some specific embodiments of this utility model, it may also have the following additional technical features: a plurality of grooves 112 are evenly spaced on the outer wall of the inner fiberglass sleeve 110, and a first notch 113 is opened through the grooves 112 toward the end of the inner fiberglass sleeve 110. A second notch 221 is correspondingly opened on the inner wing plate 220 of the steel connector 200. A first reinforcing connector 310 is embedded in the groove 112. A limiting seat 320 with a through hole is connected to the inner wing plate 220 toward the outer wing plate 230. One end of the first reinforcing connector 310 passes through the first notch 113, the second notch 221 and the through hole of the limiting seat 320 in sequence and is fixedly connected to the limiting seat 320.

[0037] In some specific embodiments of this utility model, it may also have the following additional technical features: the first reinforcing connector 310 includes a rubber sleeve 311, a first bolt 312 and a first nut 313. One end of the first bolt 312 is located in the groove 112. The other end of the first bolt 312 passes through the through hole of the first notch 113, the second notch 221 and the limiting seat 320 in sequence and is fixedly connected to the limiting seat 320 by the first nut 313. The rubber sleeve 311 is hollow and is sleeved on the part of the first bolt 312 located in the first notch 113 and the second notch 221.

[0038] Through the above design, the rubber sleeve 311 can fill the gap between the first bolt 312 and the first notch 113 and the second notch 221, thereby improving the shear resistance of the first bolt 312. The presence of the limiting seat 320 can cover the second notch 221, so that it is not necessary to use a large-size nut with a small-size bolt, thereby achieving an effective connection between the steel connector 200 and the inner fiberglass sleeve 110.

[0039] According to a second aspect of the present invention, a marine bridge pier construction mechanism includes multiple UHPC construction templates, which are connected end to end along the length direction.

[0040] In some specific embodiments of this utility model, it may also have the following additional technical features: the marine bridge pier construction mechanism further includes a positioning structure, which includes a recess (not shown in the figure) and a convex part (not shown in the figure), and the recess and the convex part are distributed and connected to the opposite surfaces of two adjacent outer wing plates 230 in a one-to-one correspondence.

[0041] By using the concave-convex matching setting, two UHPC construction templates can be quickly positioned and connected, improving construction efficiency.

[0042] In some specific embodiments of this utility model, it may also have the following additional technical features: an expansion strip (not shown in the figure) is sealed between two adjacent outer wing plates 230 and between the inner wing plate 220 and the inner corrugated sleeve, thereby achieving the effect of sealing connection.

[0043] refer to Figure 3 As shown, in some specific embodiments of this utility model, it may also have the following additional technical features: a plurality of third notches 231 are evenly provided on the outer wing plate 230 of the steel connector 200, and two adjacent outer wing plates 230 are fixedly connected by a second reinforcing connector 330.

[0044] Specifically, the second reinforcing connector 330 includes a second bolt 331 and a second nut 332. The nut portion of the second bolt 331 is located on one of the outer flanges 230. The threaded portion of the second bolt 331 passes through two corresponding third notches 231 in sequence and is threadedly connected to the second nut 332 located on the other outer flange 230, thereby fixing the two steel connectors 200.

[0045] It should be noted that, for ease of construction, the inner fiberglass sleeve 110, the outer protective sleeve 120, and the steel connector 200 can all be processed into structures that are easy to assemble, such as two semi-cylindrical structures, etc., according to actual needs. There are no restrictions here. At the same time, expansion strips are set at the splicing points for sealing connection.

[0046] Construction method:

[0047] Preparation: Clean the surface of the harbor piers to remove oil, loose concrete, rust, etc., exposing a solid base layer. Based on the pier dimensions and reinforcement requirements, customize appropriate specifications of inner fiberglass sleeves 110 and steel connectors 200 to form the UHPC construction template.

[0048] Template Installation: The inner fiberglass sleeve 110 and the outer protective sleeve 120 are sequentially fitted onto the pier. The templates are then assembled into a complete cylindrical structure, i.e., the offshore bridge pier construction mechanism, using steel structure connections at the joints. The offshore bridge pier construction mechanism is then fixed to the pier, and its verticality and horizontality are adjusted. During installation, ensure a secure connection between the steel structure and the fiberglass sleeve, and that the expansion strips used for sealing are properly applied.

[0049] Underwater Non-Dispersible Polymer (UHPC) Casting: A casting port is set at the top of the offshore bridge pier construction structure. Underwater non-dispersible polymer (UHPC) is cast from the bottom of the offshore bridge pier construction structure upwards into the gap between the inner fiberglass sleeve 110 and the pier through pumping or other casting methods. The casting speed is strictly controlled during the casting process to ensure the UHPC is dense.

[0050] Curing and formwork removal: Curing is carried out after the pouring is completed. The curing time is determined according to the performance requirements of UHPC. After the curing period, the outer protective sleeve 120, the inner fiberglass sleeve 110, and the steel connector 200 are removed in sequence.

[0051] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A UHPC construction formwork, characterized in that, The device includes a template sleeve (100) and steel connectors (200) connected to both ends of the template sleeve (100). The template sleeve (100) includes an inner fiberglass sleeve (110) and an outer protective sleeve (120) connected sequentially from the inside to the outside. The outer wall of the inner fiberglass sleeve (110) is provided with a plurality of first stiffening ribs (111) at intervals. The outer protective sleeve (120) is provided with clearance positions (121) corresponding to the first stiffening ribs (111). The steel connector (200) includes a web plate (210) and an inner wing plate (220) and an outer wing plate (230) respectively connected to both sides of the web plate (210). The inner wing plate (220) is sealed to the inner fiberglass sleeve (110).

2. The UHPC construction template according to claim 1, characterized in that, The first stiffening ribs (111) are evenly spaced along the circumferential direction of the inner fiberglass sleeve (110).

3. A UHPC construction template according to claim 2, characterized in that, The cross-sectional shape of the first stiffening rib (111) is trapezoidal.

4. A UHPC construction template according to claim 1, characterized in that, A second stiffening rib (211) is connected to the web plate (210).

5. A UHPC construction template according to claim 4, characterized in that, The second stiffening rib (211) is a ring structure and is connected around the web (210).

6. A UHPC construction template according to claim 1, characterized in that, Multiple grooves (112) are evenly spaced on the outer wall of the inner fiberglass sleeve (110). The multiple grooves (112) have a first notch (113) through them to the end of the inner fiberglass sleeve (110). A second notch (221) is correspondingly provided on the inner wing plate (220) of the steel connector (200). A first reinforcing connector (310) is embedded in the groove (112). A limiting seat (320) with a through hole is connected to the inner wing plate (220) facing the outer wing plate (230). One end of the first reinforcing connector (310) passes through the first notch (113), the second notch (221) and the through hole of the limiting seat (320) in sequence and is fixedly connected to the limiting seat (320).

7. A UHPC construction formwork according to claim 6, characterized in that, The first reinforcing connector (310) includes a rubber sleeve (311), a first bolt (312), and a first nut (313). One end of the first bolt (312) is located in the groove (112). The other end of the first bolt (312) passes through the first notch (113), the second notch (221), and the through hole of the limiting seat (320) in sequence, and is fixedly connected to the limiting seat (320) by the first nut (313). The rubber sleeve (311) is hollow and is sleeved on the part of the first bolt (312) located in the first notch (113) and the second notch (221).

8. A construction mechanism for marine bridge piers, characterized in that, It includes multiple UHPC construction templates as described in any one of claims 1-7, wherein the multiple UHPC construction templates are connected end to end in sequence along the length direction.

9. A construction mechanism for marine bridge piers according to claim 8, characterized in that, The marine bridge pier construction mechanism also includes a positioning structure, which includes a concave part and a convex part. The concave part and the convex part are distributed and connected to the opposite surfaces of two adjacent outer wing plates (230) in a one-to-one correspondence.

10. A construction mechanism for marine bridge piers according to claim 8, characterized in that, The outer wing plate (230) of the steel connector (200) is provided with multiple third notches (231) evenly distributed, and two adjacent outer wing plates (230) are fixedly connected by a second reinforcing connector (330).

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