Fabricated expansion joint structure

Abstract

The utility model provides a matching type expansion joint structure which at least comprises a first concrete plate and a second concrete plate which are adjacently arranged, a connecting assembly is arranged between the first concrete plate and the second concrete plate, and the connecting assembly comprises a corner protection assembly, a shear-resistant anchoring assembly and a force transmission assembly. The corner protection assembly is used for protecting contact corners of the first concrete plate and the second concrete plate; when the first concrete plate and the second concrete plate contract, the corner protection assemblies are fixed to the first concrete plate and the second concrete plate respectively after being separated, and an expansion joint is formed between the first concrete plate and the second concrete plate. The expansion joint structure is easy to install, the corner protection assembly is anchored in the concrete plate through the shear-resistant anchoring assembly, the fragile edge of the expansion joint of the concrete plate is protected, and the expansion joint structure has the remarkable advantages of internal stress release and load transmission of the concrete plate.

Description

A prefabricated expansion joint structure Technical Field

[0001] This utility model relates to the field of construction technology for concrete floors or roads, and in particular to a prefabricated expansion joint structure. Background Technology

[0002] Crack control is a key aspect of concrete construction, especially during the construction of concrete floors or pavements. Cracks are most likely to occur when temperature changes and concrete shrinkage cause excessive internal stress in the structure. There are two main measures for controlling this additional internal stress: one is constraint, which involves reinforcing the concrete structure; the other is channeling, primarily through the installation of joints within the concrete slabs. There are three types of joints: expansion joints, contraction joints, and construction joints. Construction joints are typically placed at expansion and contraction joints. Simplifying the structural design, there are only two types: expansion joints and contraction joints. Expansion joints are generally 20-30mm wide, with the upper 3-4cm filled with sealant and the lower part filled with sealant board. Contraction joints are generally dummy joints, cut 3-8mm wide and approximately 5-6cm deep in the upper part of the concrete slab, and then filled with sealant.

[0003] In actual use, these two types of joints have very limited effect on releasing internal stress. Moreover, the concrete at the edge of the joint is easily damaged, the sealant comes off, and a large amount of debris enters the joint, which hinders the release of internal stress in the concrete structure, accelerates the damage of concrete slabs, and results in high maintenance costs later.

[0004] A Chinese patent document, CN218880476U, discloses an "expansion joint structure for concrete pavement." This structure includes a base layer with two symmetrically connected concrete layers at its upper end. Each of the two concrete layers has a triangular-sectioned baffle connected to its opposing sides. A matching filler layer, with an isosceles trapezoidal cross-section, is movably disposed between the two baffles. A support plate is connected to the lower end of the filler layer, and a support seat is connected to the upper end of the base layer directly below the support plate. Several springs are evenly spaced along the horizontal longitudinal direction at the lower end of the support plate. A support column is fixedly connected to the other end of each spring, and the end of the support column furthest from the spring is fixedly connected to the upper end of the support seat. This patent allows the concrete layers to have space for thermal expansion and prevents the filler layer from being compressed and deformed. Simultaneously, the filler layer and the baffles maintain a close fit, preventing road runoff from entering and causing road damage. However, the concrete at the joint edge of this patent's expansion joint structure is easily damaged, still relying on the filler layer, resulting in high maintenance costs. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a prefabricated expansion joint structure to solve the problems in the existing concrete pavement expansion joint structure where the concrete at the joint edge is easily damaged, the sealant is easily detached, a large amount of debris enters the joint, which hinders the release of internal stress in the concrete structure, accelerates the damage of concrete slabs, and results in high maintenance costs.

[0006] To achieve the above-mentioned and other related objectives, this utility model is implemented through the following technical solutions.

[0007] This utility model provides a prefabricated expansion joint structure, comprising at least a first concrete slab and a second concrete slab arranged adjacent to each other. A connecting component is provided between the opposing sides of the first and second concrete slabs. The connecting component includes a corner protection component, a shear anchoring component, and a force transmission component. The corner protection component is used to protect the contact corners of the first and second concrete slabs. The shear anchoring component is used to anchor the corner protection component within the first and second concrete slabs. The force transmission component is used to transmit the vertical load between the first and second concrete slabs. When the first and second concrete slabs contract, the corner protection component separates and is fixed to the first and second concrete slabs respectively, forming an expansion joint between the first and second concrete slabs.

[0008] This utility model's prefabricated expansion joint structure is simple to install. The edge protection component uses shear anchoring components to be anchored in the concrete slab, protecting the vulnerable edges of the concrete slab at the expansion joint. It also offers significant advantages in stress release and load transfer within the concrete slab. This prefabricated expansion joint structure has extremely high durability; throughout the entire design life of the structure, the maintenance cost is almost zero, greatly reducing subsequent maintenance work. This utility model's prefabricated expansion joint structure is suitable for the construction of expansion joints in indoor and outdoor (reinforced) concrete sites with a thickness of 100~400mm. The joint width can reach 0~30mm, and it is suitable not only for straight expansion joint construction but also for curved expansion joint construction around certain structures.

[0009] Preferably, the corner protection assembly includes at least a first corner protector, a second corner protector, and a breakable bolt. The first and second corner protectors are fixedly connected by the breakable bolt. When the first and second concrete slabs shrink, the breakable bolt breaks, and the first and second corner protectors separate and are fixed to the first and second concrete slabs respectively, forming an expansion joint. The first and second corner protectors are made of cold-drawn flat steel.

[0010] Preferably, the shear anchoring assembly includes at least a first shear anchor disposed on the side of the first corner protector away from the expansion joint and a second shear anchor disposed on the side of the second corner protector away from the expansion joint, wherein the first and second shear anchors are inclined downward relative to the horizontal surface.

[0011] Preferably, the first and second shear anchors are inclined downwards at 10-30° relative to the horizontal plane.

[0012] Preferably, the force transmission component includes a discontinuous force transmission plate horizontally disposed below the corner protection component and a discontinuous force transmission plate sheath for providing expansion and contraction space for the discontinuous force transmission plate, wherein the discontinuous force transmission plate and the discontinuous force transmission plate sheath are respectively disposed within the first concrete slab and the second concrete slab.

[0013] The force transmission component uses a discontinuous force transmission plate with a sheath. Under vertical load, it can transfer the load from one side of the expansion joint to the adjacent concrete slab. If uneven settlement of the foundation occurs, it can always keep the adjacent ground concrete slabs on the same horizontal plane and prevent the phenomenon of uneven steps on both sides of the expansion joint.

[0014] Preferably, an upper compartment plate is vertically provided between the discontinuous force transmission plate and the corner protection component. The two ends of the upper compartment plate are bent in the direction away from the expansion joint to form an upper upper abutment portion and an upper lower abutment portion. The upper upper abutment portion abuts against the corner protection component, and the lower abutment portion abuts against the top surface of the discontinuous force transmission plate.

[0015] Preferably, a lower compartment plate is vertically provided below the discontinuous force transmission plate. The two ends of the lower compartment plate are bent in the direction away from the expansion joint to form an upper abutment portion and a lower abutment portion of the lower compartment plate. The upper abutment portion of the lower compartment plate abuts against the bottom surface of the discontinuous force transmission plate.

[0016] The upper and lower partition plates of this utility model not only serve as force transmission plates, but can also be used as construction templates. During the construction of concrete slabs, no additional support templates are needed at the expansion joints. Each concrete slab segment can be achieved by the prefabricated expansion joint structure of this application. After the concrete slabs are poured, there is no need to remove the templates, saving a lot of labor and time and increasing construction efficiency.

[0017] Preferably, a concrete fixing block is formed between the first concrete slab and the second concrete slab. The concrete fixing block is a frustum structure with a diameter that gradually decreases from bottom to top, and is sequentially covered by a corner protection component, a shear anchoring component, and a force transmission component.

[0018] Preferably, the connecting assembly further includes an elastic sealant plate, which is disposed through the space between the first and second corner protectors and between the discontinuous force transmission plate and the discontinuous force transmission plate sheath.

[0019] Preferably, the connecting components include a linear connecting component, a cross-shaped connecting component, and a T-shaped connecting component.

[0020] As described above, the prefabricated expansion joint structure of this utility model has the following beneficial effects:

[0021] (1) The installation is simple. The edge protection component is anchored in the concrete slab using shear anchoring components, which protects the fragile edges at the expansion joints of the concrete slab and has significant advantages in stress release and load transfer within the concrete slab.

[0022] (2) The prefabricated expansion joint structure has extremely high durability. Throughout the entire structural design life, the maintenance cost is almost zero, greatly reducing the maintenance work.

[0023] (3) The prefabricated expansion joint structure of this utility model is suitable for the construction of expansion joints in indoor and outdoor (reinforced) concrete sites with a thickness of 100~400mm. The joint width can reach 0~30mm. It is not only suitable for the construction of straight expansion joints, but also for the construction of arc-shaped expansion joints around certain structures. Attached Figure Description

[0024] Figure 1 shows a schematic diagram of the prefabricated expansion joint structure of Embodiment 1.

[0025] Figure 2 shows a schematic diagram of the force transmission principle of the prefabricated expansion joint structure in Example 1.

[0026] Figure 3 shows a schematic diagram of the prefabricated expansion joint structure of Example 2.

[0027] Figure 4 shows a schematic diagram of the prefabricated expansion joint structure of Example 3.

[0028] Figure 5 shows a schematic diagram of the linear connection component in Embodiment 4.

[0029] Figure 6 shows a schematic diagram of the "+" shaped connecting component in Embodiment 5.

[0030] Figure 7 shows a schematic diagram of the "T"-shaped connecting component in Embodiment 6.

[0031] Explanation of reference numerals: First concrete slab 1, Second concrete slab 2, First corner protector 3, First shear anchor 31, Second corner protector 4, Second shear anchor 41, Easily broken bolt 5, Discontinuous force transmission plate 6, Discontinuous force transmission plate sheath 61, Upper compartment plate 7, Upper compartment plate abutment part 71, Lower compartment plate abutment part 72, Lower compartment plate 8, Lower compartment plate abutment part 81, Lower compartment plate abutment part 82, Concrete fixing block 9, Elastic joint filler 10, Third corner protector 32, Fourth corner protector 42, First shear anchor 321, Second shear anchor 421. Detailed Implementation

[0032] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0033] Please refer to Figures 1 to 7. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0034] Example 1

[0035] As shown in Figure 1, this utility model provides a prefabricated expansion joint structure, including a first concrete slab 1 and a second concrete slab 2 arranged adjacent to each other. A connecting component is provided between the opposing sides of the first and second concrete slabs. The connecting component includes a corner protection component, a shear anchoring component, and a force transmission component. The corner protection component is used to protect the contact corners of the first and second concrete slabs. The shear anchoring component is used to anchor the corner protection component within the first and second concrete slabs. The force transmission component is used to transmit the vertical load between the first and second concrete slabs. When the first and second concrete slabs shrink, the corner protection component separates and is fixed to the first and second concrete slabs respectively, forming an expansion joint between the first and second concrete slabs.

[0036] The corner protection assembly includes a first corner protector 3, a second corner protector 4, and a breakable bolt 5. The first and second corner protectors are fixedly connected by the breakable bolt. When the first and second concrete slabs shrink, the breakable bolt breaks, and the first and second corner protectors separate and are fixed to the first and second concrete slabs respectively, forming an expansion joint. The first and second corner protectors are made of 10×40mm cold-drawn flat steel, and the breakable bolt is a breakable plastic bolt.

[0037] The shear anchoring assembly includes a first shear anchor 31 located on the side of the first corner protector away from the expansion joint and a second shear anchor 41 located on the side of the second corner protector away from the expansion joint. The first and second shear anchors are inclined downwards at 10° relative to the horizontal plane. The first and second shear anchors are specifically made of round steel.

[0038] The force transmission component includes a discontinuous force transmission plate 6 horizontally positioned below the corner protection component and a discontinuous force transmission plate sheath 61 for providing expansion and contraction space for the discontinuous force transmission plate. The discontinuous force transmission plate and the discontinuous force transmission plate sheath are respectively disposed within the first concrete slab and the second concrete slab. A vertical upper compartment plate 7 is provided between the discontinuous force transmission plate and the corner protection component. The two ends of the upper compartment plate are bent toward the side away from the expansion joint to form an upper upper abutment portion 71 and an upper lower abutment portion 72. The upper upper abutment portion of the upper compartment plate abuts against the corner protection component, and the lower abutment portion of the upper compartment plate abuts against the top surface of the discontinuous force transmission plate. A lower compartment plate 8 is vertically installed below the discontinuous force transmission plate. Both ends of the lower compartment plate are bent away from the expansion joint to form an upper abutment portion 81 and a lower abutment portion 82. The upper abutment portion of the lower compartment plate abuts against the bottom surface of the discontinuous force transmission plate, and the lower abutment portion abuts against the concrete slab casting template. The discontinuous force transmission plate is made of steel plate with a thickness of 6-10mm, the sheath of the discontinuous force transmission plate is made of ABS plastic, and the upper and lower compartment plates are made of cold-formed steel plate with a thickness of ≥2mm, requiring good verticality.

[0039] Figure 2 shows a schematic diagram of the force transmission principle of the prefabricated expansion joint structure in this embodiment. Its working principle is as follows:

[0040] Each joint consists of two cold-drawn flat steel bars, fixed together with fracturing bolts. Each bar is welded with shear anchors at regular intervals to ensure anchorage into the concrete slab during pouring. Upper and lower partition plates, both made of steel plates, are welded to the bottom of the two flat steel bars. These plates serve as formwork during construction and also fix the load transfer plates. The load transfer plates are positioned at half the thickness of the first concrete slab according to the design spacing and are welded to the upper and lower partition plates. Free expansion sheaths are installed on each load transfer plate on one side. The load transfer plates transfer the vertical load between the adjacent concrete slabs of the expansion joint, minimizing the height difference and preventing uneven stress and settlement. After the concrete cures, drying shrinkage will break the fracturing bolts on the cold-drawn flat steel bars, separating them and placing them on adjacent concrete slabs, thus forming the expansion joint. Expansion joints allow concrete slabs to be divided into sections and expand and contract freely in both longitudinal and transverse directions as the ambient temperature changes throughout the four seasons.

[0041] Example 2

[0042] As shown in Figure 3, the difference between Embodiment 2 and Embodiment 1 is that the connecting assembly further includes an elastic sealant plate 10. The elastic sealant plate is disposed between the first and second corner protection members and between the discontinuous force transmission plate and the discontinuous force transmission plate sheath. The remaining components and connection relationships are exactly the same.

[0043] The prefabricated expansion joint structure of this embodiment is suitable for applications where the preset joint width is relatively wide, and an elastic sealant plate needs to be added to the connecting components.

[0044] Example 3

[0045] As shown in Figure 4, the difference between Embodiment 3 and Embodiment 1 is that a concrete fixing block 9 is formed between the first concrete slab and the second concrete slab. The concrete fixing block is a frustum structure with a diameter that gradually decreases from bottom to top, and it is covered by the corner protection component, the shear anchoring component and the force transmission component in sequence. The other components and their connection relationships are exactly the same.

[0046] The prefabricated expansion joint structure of this embodiment is suitable for situations where it is not advisable to drill holes in the subgrade or where concrete slabs on both sides of the expansion joint are poured simultaneously.

[0047] The working principle of the prefabricated expansion joint structure in this embodiment is as follows:

[0048] First, the height and alignment of the connecting components should be accurately controlled and supported, and the support should be stable. Each concrete slab is fixed at the center of the connecting component, and the concrete fixing block is made into a frustum structure. The height of the concrete fixing block reaches the general position of the corner protection component.

[0049] Example 4

[0050] The difference between Example 4 and Example 1 is that the arrangement of the connecting components is different. Specifically, it is a linear connecting component as shown in Figure 5. The other components and connection relationships are exactly the same.

[0051] The prefabricated expansion joint structure of this embodiment can be applied to expansion joints between two concrete slabs.

[0052] Example 5

[0053] The difference between Example 5 and Example 1 is that the number of concrete slabs is different, the arrangement of the connecting components is different, and the shear anchoring components are different. There are four concrete slabs. The specific arrangement of the connecting components is a cross-shaped connecting component as shown in Figure 6. The corner protection component includes a first corner protector (3), a second corner protector (4), a third corner protector 32, a fourth corner protector 42, and a breakable bolt (5). The first corner protector and the second corner protector are fixedly connected by the breakable bolt. The third corner protector 32 and the fourth corner protector 42 are fixedly connected by the breakable bolt. The first corner protector 3 and the second corner protector 4 intersect each other perpendicularly to form a cross-shaped structure with the third corner protector 32 and the fourth corner protector 42. The shear anchoring component also includes a third shear anchor 321 located on the side of the third corner protector away from the expansion joint and a fourth shear anchor 421 located on the side of the fourth corner protector away from the expansion joint. The remaining components and connection relationships are exactly the same.

[0054] The prefabricated expansion joint structure of this embodiment can be applied to the expansion joint between four concrete slabs.

[0055] Example 6

[0056] The difference between Example 6 and Example 1 is that the number of concrete slabs is different, the arrangement of the connecting components is different, and the shear anchoring components are different. There are three concrete slabs. The specific arrangement of the connecting components is as shown in Figure 7, which is a "T"-shaped connecting component. The corner protection component includes a first corner protector (3), a second corner protector (4), a third corner protector 32, a fourth corner protector 42, and a breakable bolt (5). The first corner protector and the second corner protector are fixedly connected by the breakable bolt. The third corner protector 32 and the fourth corner protector 42 are fixedly connected by the breakable bolt. The first corner protector 3 and the second corner protector 4 are perpendicular to each other and form a "T"-shaped structure with the third corner protector 32 and the fourth corner protector 42. The shear anchoring component also includes a third shear anchor 321 located on the side of the third corner protector away from the expansion joint and a fourth shear anchor 421 located on the side of the fourth corner protector away from the expansion joint. The remaining components and connection relationships are exactly the same.

[0057] The prefabricated expansion joint structure of this embodiment can be applied to expansion joints between three concrete slabs.

[0058] The prefabricated expansion joint structures in the various embodiments of this application are constructed in accordance with the following standards: GB50209-2010 "Code for Acceptance of Construction Quality of Building Ground Engineering", GBJ97-87 "Code for Construction and Acceptance of Cement Concrete Pavement", CJJ1-2008 "Code for Acceptance of Construction Quality of Urban Road Engineering", GB 50204-2015 "Code for Acceptance of Construction Quality of Concrete Structure Engineering" and GB50205-2001 "Code for Acceptance of Construction Quality of Steel Structure Engineering".

[0059] The prefabricated expansion joint structure of this application is simple and convenient to install, saving a lot of labor and time, and improving construction efficiency. Its construction cost has been analyzed and compared with the costs of traditional concrete floor construction and traditional steel expansion joint construction, as shown in Table 1:

[0060] Table 1. Comparison of Expansion Joint Construction Costs

[0061]

[0062] As shown in Table 1, the construction cost of the prefabricated expansion joint structure of this application is significantly higher than that of traditional concrete floor expansion joints, but far lower than that of steel expansion joints, making it reasonably priced. Further analysis reveals that, due to the use of this construction method, the spacing between expansion joints in concrete floors can be appropriately increased compared to traditional methods. Although the unit length construction cost is still relatively high, the increase is minimal relative to the total construction cost. This expansion joint exhibits extremely high durability, with virtually zero maintenance costs throughout the entire structural design life, significantly reducing subsequent maintenance costs and resulting in substantial economic benefits.

[0063] Construction period benefits

[0064] This expansion joint installation system acts as a fixed formwork during construction. It is quick and easy to install, and there is no need to remove the formwork after pouring concrete. This saves a lot of labor and time, effectively improves the construction speed of concrete slabs, and thus effectively shortens the project period.

[0065] Social benefits

[0066] The use of this expansion joint system in concrete slab construction offers excellent force transmission, smooth concrete surface, and effective crack control. Furthermore, it boasts high construction efficiency, simple technology, and virtually zero maintenance costs, earning consistent praise from construction, supervision, owner, and design units, making it easy to promote. Currently, this expansion joint system is used in both building and municipal engineering projects. With national support for new products and technologies, and the expansion of centralized factory production, its costs will further decrease, leading to its wider adoption in numerous projects.

[0067] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0068] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A prefabricated expansion joint structure, characterized in that, The system includes at least a first concrete slab (1) and a second concrete slab (2) arranged adjacent to each other. A connecting component is provided between the opposing sides of the first concrete slab and the second concrete slab. The connecting component includes a corner protection component, a shear anchoring component, and a force transmission component. The corner protection component is used to protect the contact corners of the first concrete slab and the second concrete slab. The shear anchoring component is used to anchor the corner protection component within the first concrete slab and the second concrete slab. The force transmission component is used to transmit the vertical load between the first concrete slab and the second concrete slab. When the first concrete slab and the second concrete slab shrink, the corner protection component separates and is fixed to the first concrete slab and the second concrete slab respectively, forming an expansion joint between the first concrete slab and the second concrete slab.

2. The prefabricated expansion joint structure according to claim 1, characterized in that: The corner protection assembly includes at least a first corner protector (3), a second corner protector (4), and a breakable bolt (5). The first corner protector and the second corner protector are fixedly connected by the breakable bolt. When the first concrete slab and the second concrete slab shrink, the breakable bolt breaks, and the first corner protector and the second corner protector separate and are fixed to the first concrete slab and the second concrete slab respectively, forming an expansion joint. The first corner protector and the second corner protector are cold-drawn flat steel.

3. The prefabricated expansion joint structure according to claim 2, characterized in that: The shear anchoring assembly includes at least a first shear anchor (31) located on the side of the first corner protector away from the expansion joint and a second shear anchor (41) located on the side of the second corner protector away from the expansion joint. The first and second shear anchors are inclined downward relative to the horizontal surface.

4. The prefabricated expansion joint structure according to claim 3, characterized in that: The first and second shear anchors are inclined downwards at 10-30° relative to the horizontal plane.

5. The prefabricated expansion joint structure according to claim 3, characterized in that: The force transmission component includes a discontinuous force transmission plate (6) horizontally disposed below the corner protection component and a discontinuous force transmission plate sheath (61) for providing expansion and contraction space for the discontinuous force transmission plate. The discontinuous force transmission plate and the discontinuous force transmission plate sheath are respectively disposed in the first concrete slab and the second concrete slab.

6. The prefabricated expansion joint structure according to claim 5, characterized in that: An upper compartment plate (7) is vertically provided between the discontinuous force transmission plate and the corner protection component. The two ends of the upper compartment plate are bent in the direction away from the expansion joint to form an upper upper abutment part (71) and an upper lower abutment part (72). The upper upper abutment part abuts against the corner protection component, and the lower abutment part abuts against the top surface of the discontinuous force transmission plate.

7. The prefabricated expansion joint structure according to claim 5, characterized in that: A lower compartment plate (8) is vertically provided below the discontinuous force transmission plate. The two ends of the lower compartment plate are bent in the direction away from the expansion joint to form an upper abutment part (81) and a lower abutment part (82) of the lower compartment plate. The upper abutment part of the lower compartment plate abuts against the bottom surface of the discontinuous force transmission plate.

8. The prefabricated expansion joint structure according to claim 5, characterized in that: A concrete fixing block (9) is formed between the first concrete slab and the second concrete slab. The concrete fixing block is a frustum structure with a diameter that gradually decreases from bottom to top, and is successively covered with a corner protection component, a shear anchoring component and a force transmission component.

9. The prefabricated expansion joint structure according to claim 5, characterized in that: The connecting assembly also includes an elastic sealant plate (10), which is disposed between the first and second corner protectors and between the discontinuous force transmission plate and the discontinuous force transmission plate sheath.

10. The prefabricated expansion joint structure according to claim 1, characterized in that: The connecting components include linear connecting components, cross-shaped connecting components, and T-shaped connecting components.

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