Shear key for mounting U-shaped beam

By designing a shear bond for U-shaped beam, the horizontal displacement problem caused by cracking of expansion joints during installation of U-shaped beams is solved, and the effect of improving the shear resistance of U-shaped beams and the overall stability of the building is achieved.

CN222541380UActive Publication Date: 2025-02-28CHINA HARBOUR ENGINEERING
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Patent Information

Application Number
CN202421335803.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-12
Publication Date
2025-02-28
Estimated Expiration
2034-06-12

AI Technical Summary

Technical Problem

During the installation of U-beams at the trest wharf, the expansion joints between two adjacent U-beams are prone to crack due to seasonal changes, resulting in horizontal displacement, and the lack of effective shear bonds to limit this displacement.

Method used

A shear key for installation of U-shaped beams is designed, including a fixing plate, a force transmission rod, a web and an anchor rod. The force transmission rod is fixed through the fixing plate. The force transmission rod clamps the web and the web is plugged into the anchor rod to form an integral structure to limit the horizontal displacement of the U-shaped beam.

Benefits of technology

Through the installation of this shear bond, the shear resistance, stiffness and stability of the U-shaped beam are increased, ensuring the overall safety performance of the structure under the action of external forces, and improving the overall stability and bearing capacity of the building.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a shear key for installing a U-shaped beam, which comprises a fixing plate, a dowel bar, a web plate and an anchor rod, and two connecting holes are arranged on a panel of the fixing plate; the axes of the two dowel bars are arranged in parallel, the dowel bars penetrate through the connecting holes, and the fixing plate is arranged in the middles of the dowel bars; the number of the web plates is two, the web plates are located on the two sides of the panel of the fixing plate respectively, the side end faces of the web plates are fixed to the two opposite rod walls of the two dowel bars, the panels of the web plates are perpendicular to the panel of the fixing plate, and through holes are formed in the panels of the web plates; the anchor rods are perpendicular to the web and penetrate through the through holes. According to the shear key provided by the utility model, different components can be connected together to form an integral structure, so that the integral stability and the bearing capacity of a building are improved, the shear resistance, the rigidity and the stability of a U-shaped beam are improved, and the integral safety performance of the structure under the action of external force is ensured.
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Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering structures, and more specifically to a shear key for installing a U-shaped beam. Background Art

[0002] During the construction of offshore coastal hotels, in order to accommodate the docking of large cruise ships, an open and light-weight pier supported by pile frames, also known as a pier, is usually built.

[0003] During the construction of the pier at the pier terminal, U-shaped beams can be used as load-bearing components. As a new type of beam used in the pier terminal, U-shaped beams have the characteristics and advantages of strong continuity, low building height, good noise reduction effect, high cross-sectional space utilization, safe driving, beautiful appearance, and good visual effect compared with other wedge-shaped beams.

[0004] The U-beam is a bottom-supported open thin-walled structure. The bottom of the beam is connected by a bottom plate, webs on both sides and flange plates on the top of the webs to form a U-shaped cross-section channel. During the installation of the U-beam, sufficient expansion joints must be left between two adjacent U-beams. The length of the expansion joint will change with the seasons, which can easily cause cracking in the expansion joint, making it easy for horizontal displacement to occur between the two adjacent U-beams under the action of external forces.

[0005] Therefore, how to provide a shear key for installing a U-shaped beam to limit the horizontal displacement of the U-shaped beam is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] In view of this, the utility model provides a shear key for installing a U-shaped beam, aiming to solve the above technical problems.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A shear key for installing a U-shaped beam, comprising:

[0009] A fixing plate, wherein two connecting holes are formed on the fixing plate panel;

[0010] A force transmission rod, wherein the number of the force transmission rods is two and the axes thereof are arranged in parallel, the two force transmission rods respectively penetrate the two connection holes, and the fixing plate is arranged in the middle of the two force transmission rods;

[0011] Webs, the number of the webs is two and they are respectively located on both sides of the fixed plate panel, the side end faces of the webs are fixed to the two rod walls opposite to the two force transmission rods, the panels of the two webs are perpendicular to the panels of the fixed plate, and the web panels are provided with through holes;

[0012] An anchor rod is perpendicular to the web and passes through the through hole.

[0013] The beneficial effect of the above technical solution is that the two force transfer rods are fixed by the fixing plate, the web is clamped between the two force transfer rods, and the panel of the web is plugged with the anchor rod. When in use, after the U-shaped beam is hoisted into place, the fixing plate separates the force transfer rod into two parts, one part is inserted into the reserved groove at the end of the U-shaped beam, and the other part is located on the pile cap. The anchor rod is anchored in the reserved hole at the top of the pile cap, and finally the concrete of the limit block is poured, so that the U-shaped beam, shear key and pile cap form a whole, and the installation of the U-shaped beam is completed.

[0014] Preferably, the fixing plate comprises a first fixing plate and a second fixing plate which are symmetrically arranged, and corresponding connecting holes are provided on the panels of the first fixing plate and the second fixing plate. The use of two fixing plates can ensure the horizontality of the axis of the force transmission rod and transmit the horizontal load.

[0015] Preferably, screw holes are provided at four corners of the panel of the first fixing plate, so that the first fixing plate and the end surface of the U-shaped beam can be fastened by screws.

[0016] Preferably, the force transmission rod is a steel pipe, which reduces the cost while ensuring its force bearing performance.

[0017] Preferably, an end cap is fixed to one end of the force transmission rod close to the first fixing plate. The force transmission rod close to the first fixing plate is inserted into the anchor groove at the end of the U-shaped beam, and the end cap is covered on the end of the steel pipe, so that the contact surface between the shear key and the U-shaped beam is a flexible surface to prevent the occurrence of rigid fracture.

[0018] Preferably, the end faces of the two webs are respectively fixed to the panels of the first fixing plate and the second fixing plate which are away from each other, and the two side walls thereof are respectively fixed to the rod walls opposite to the two force transmission rods. The web is perpendicular to the fixing plate and clamped between the two force transmission rods, and the web can better position and fix the anchor rod.

[0019] Preferably, the anchor rod comprises a first anchor rod and a second anchor rod, two through holes are provided on the panel of the web, and the line connecting the two through holes and the line connecting the two connecting holes are arranged perpendicular to each other; the first anchor rod and the second anchor rod are respectively inserted into the two through holes, and the web is located in the middle of the anchor rod. The anchor rod can be anchored on the top surface of the pile cap to ensure the stability of the connection between the U-beam and the pile cap, and improve the connection stiffness and overall stability.

[0020] Preferably, the length of the first anchor rod is greater than that of the second anchor rod, and the two second anchor rods are respectively close to the first fixing plate and the second fixing plate.

[0021] Preferably, the first fixing plate and the second fixing plate are of equal length, the first fixing plate is wider than the second fixing plate, and the axis between the two connecting holes coincides with the midline of the length direction of the first fixing plate or the second fixing plate.

[0022] Preferably, the shear key is made by welding steel sections.

[0023] It can be seen from the above technical scheme that compared with the prior art, the utility model discloses a shear key for installing a U-beam, wherein the fixing plate divides the force transmission rod horizontally into two parts, one part is located in the anchor groove at the end of the U-beam, and the other part is located on the top surface of the pile cap; the web divides the anchor rod into two parts, one part is anchored in the reserved hole on the top surface of the pile cap, and the part of the shear key exposed outside the pile cap is poured with concrete to form a limit block, so that the U-beam, the shear key and the pile cap form an integral structure, which increases the shear resistance, rigidity and stability of the U-beam, ensures the overall safety performance of the structure under the action of external force, and improves the overall stability and bearing capacity of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the transverse structure of the shear key provided by the utility model;

[0026] Figure 2 A schematic diagram of the longitudinal structure of the shear key provided by the utility model;

[0027] Figure 3 A schematic diagram of the shear key installation structure provided by the utility model;

[0028] Figure 4 for Figure 3 A magnified schematic diagram of part A in FIG.

[0029] Figure 5 This is a schematic diagram of the U-beam installation structure provided by the utility model.

[0030] in,

[0031] 1-fixed plate; 11-first fixed plate; 12-second fixed plate; 13-screw hole; 2-end cover; 3-anchor rod; 31-first anchor rod; 32-second anchor rod; 4-web plate; 5-force transfer rod; 6-U-beam; 61-anchor groove; 7-cast-in-place limit block; 8-pile cap. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See attached Figure 1 and 2 The utility model embodiment discloses a shear key for installing a U-shaped beam, comprising:

[0034] A fixing plate 1, wherein two connection holes are provided on the panel of the fixing plate 1;

[0035] The force transmission rods 5 are two in number and their axes are arranged in parallel. The two force transmission rods 5 respectively pass through the two connection holes, and the fixing plate 1 is arranged in the middle of the two force transmission rods 5;

[0036] Web plate 4, the number of web plates 4 is two and they are respectively located on both sides of the panel of the fixed plate 1, the side end faces of the web plates 4 are fixed to the two rod walls opposite to the two force transmission rods 5, the panels of the two web plates 4 are perpendicular to the panels of the fixed plate 1, and through holes are opened on the panels of the web plates 4;

[0037] Anchor rod 3, which is perpendicular to web 4 and passes through the through hole.

[0038] like Figure 1 and 2 As shown, the force transfer rod is divided into two parts by a fixing plate, and the anchor rod is divided into two parts by a web plate. The fixing plate is used to fix the force transfer rod, and the web plate is clamped and fixed between the force transfer rods, and the web plate fixes the anchor rod.

[0039] like Figure 3 and 4 As described above, the end surface of the U-shaped beam 6 is provided with an anchoring groove 61, and the span between two adjacent pile caps 8 is the width of one U-shaped beam 6. When installing, the U-shaped beam 6 is first hoisted, and its end is placed on the top surface of two adjacent pile caps 8;

[0040] The fixing plate 1 divides the force transmission rod 5 into two transverse parts, one part is deeply inserted into the anchor groove 61, and the other part is exposed on the top surface of the pile cap 8; the web 4 divides the anchor rod 3 into two transverse parts, one part is anchored in the reserved hole on the top surface of the pile cap 8, the bottom surface of the web 4 abuts against the top surface of the pile cap 8 or reserves a part of the movable gap, and the fixing plate 1 abuts against the end surface of the anchor groove notch or reserves a part of the movable gap.

[0041] In order to further optimize the above technical solution and ensure that the axis of the force transmission rod is horizontal after the shear key is installed, the fixing plate 1 includes a first fixing plate 11 and a second fixing plate 12 arranged symmetrically, and corresponding connecting holes are opened on the panels of the first fixing plate 11 and the second fixing plate 12.

[0042] In some other specific embodiments, to ensure effective connection between the shear key and the U-shaped beam, screw holes 13 are provided at four corners of the panel of the first fixing plate 11, and the first fixing plate 11 can be fastened to the end surface of the notch of the anchoring groove 61 by screws.

[0043] In this embodiment, the force transmission rod 5 is a steel pipe.

[0044] In order to further optimize the above technical solution and prevent the force transmission rod 5 from forming a rigid connection with the wall of the anchoring groove 61 , an end cover 2 is fixed to one end of the force transmission rod 5 close to the first fixing plate 11 .

[0045] In order to further optimize the above technical solution and ensure effective fixation and positioning of the anchor rods, the end faces of the two webs 4 are respectively fixed to the panels of the first fixing plate 11 and the second fixing plate 12 which are away from each other, and their two side walls are respectively fixed to the rod walls opposite to the two force transmission rods 5.

[0046] In order to further optimize the above technical solution and ensure the anchoring performance between the shear key and the pile cap, the anchor rod 3 includes a first anchor rod 31 and a second anchor rod 32. Two through holes are opened on the panel of the web 4. The connecting line between the two through holes and the connecting line between the two connecting holes are arranged perpendicular to each other; the first anchor rod 31 and the second anchor rod 32 are respectively inserted into the two through holes, and the web 4 is located in the middle of the anchor rod 3.

[0047] In some other specific embodiments, the length of the first anchor rod 31 is greater than that of the second anchor rod 32 , and the two second anchor rods 32 are respectively close to the first fixing plate 11 and the second fixing plate 12 .

[0048] In some other specific embodiments, the lengths of the first fixing plate 11 and the second fixing plate 12 are equal, the width of the first fixing plate 11 is greater than the width of the second fixing plate 12, and the axis between the two connecting holes coincides with the midline of the length direction of the first fixing plate 11 or the second fixing plate 12.

[0049] Each structural member of the shear key improved in this embodiment is made of steel and fixed by welding.

[0050] like Figure 3 and 5As shown, after the shear key is installed, two PTFE boards are installed at the two longitudinal ends of the key, and two templates are installed on the two lateral sides. The template and the PTEE board together form a template for cast-in-place concrete and pour concrete. After the concrete pouring is completed, a cast-in-place limit block 7 is formed. A part of the shear key is anchored in the anchor groove, and a part is anchored in the cast-in-place limit block 7 so that the U-beam is connected to the pile cap to form an integral structure.

[0051] The strength of cast-in-place concrete of shear key is C50. According to the construction conditions along the coast, dry-mixed concrete can be used, that is, powder aggregate is added to the tank truck, the tank truck is transported to the island by a square barge, and water and admixtures are added on the island for on-site mixing. The concrete of a single shear key is relatively small, and a certain working surface must be prepared on site before arranging the concrete to be poured one by one. The pouring is done by bucket pouring.

[0052] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shear key for installing a U-beam, characterized in that: include: A fixing plate (1), wherein two connection holes are provided on a panel of the fixing plate (1); force transmission rods (5), the number of the force transmission rods (5) being two and the axes thereof being arranged in parallel, the two force transmission rods (5) respectively passing through the two connection holes, and the fixing plate (1) being arranged in the middle of the two force transmission rods (5); Web plates (4), the number of the web plates (4) being two and being respectively located on both sides of the panel of the fixing plate (1), the side end faces of the web plates (4) being fixed to two rod walls opposite to the two force transmission rods (5), the panels of the two web plates (4) being perpendicular to the panels of the fixing plate (1), and the panels of the web plates (4) being provided with through holes; An anchor rod (3), wherein the anchor rod (3) is perpendicular to the web (4) and passes through the through hole.

2. A shear key for installing a U-shaped beam according to claim 1, characterized in that: The fixing plate (1) comprises a first fixing plate (11) and a second fixing plate (12) which are symmetrically arranged, and corresponding connecting holes which are in communication are provided on panels of the first fixing plate (11) and the second fixing plate (12).

3. A shear key for installing a U-beam according to claim 2, characterized in that: The first fixing plate (11) has screw holes (13) at four corners of the panel.

4. A shear key for installing a U-shaped beam according to claim 3, characterized in that: The force transmission rod (5) is a steel pipe.

5. A shear key for installing a U-shaped beam according to claim 4, characterized in that: An end cover (2) is fixed to one end of the force transmission rod (5) close to the first fixing plate (11).

6. A shear key for installing a U-shaped beam according to claim 2, characterized in that: The end surfaces of the two webs (4) are respectively fixed to the panels of the first fixing plate (11) and the second fixing plate (12) which are away from each other, and the two side walls thereof are respectively fixed to the rod walls opposite to the two force transmission rods (5).

7. A shear key for installing a U-shaped beam according to claim 6, characterized in that: The anchor rod (3) comprises a first anchor rod (31) and a second anchor rod (32); two through holes are provided on the panel of the web (4); a line connecting the two through holes and a line connecting the two connecting holes are arranged perpendicular to each other; the first anchor rod (31) and the second anchor rod (32) are respectively inserted into the two through holes, and the web (4) is located in the middle of the anchor rod (3).

8. A shear key for installing a U-shaped beam according to claim 7, characterized in that: The length of the first anchor rod (31) is greater than the length of the second anchor rod (32), and the two second anchor rods (32) are respectively close to the first fixing plate (11) and the second fixing plate (12).

9. A shear key for installing a U-shaped beam according to claim 7, characterized in that: The first fixing plate (11) and the second fixing plate (12) are of equal length, the width of the first fixing plate (11) is greater than the width of the second fixing plate (12), and the axis between the two connecting holes coincides with the midline of the length direction of the first fixing plate (11) or the second fixing plate (12).

10. A shear key for installing a U-shaped beam according to any one of claims 1 to 9, characterized in that: The shear key is made by welding section steel.