T-shaped bridge abutment structure based on prefabricated parts

Abstract

The invention belongs to the technical field of bridge foundation building prefabrication, and particularly relates to a T-shaped abutment structure based on a prefabricated component, the T-shaped abutment structure comprises an abutment base part, an abutment body part and an abutment top part, the abutment base part is of a prefabricated structure, and an assembly groove is formed in the top of the abutment base part; the platform body part is of a prefabricated structure, and the bottom of the platform body part is installed in the groove structure in an assembled mode. The platform top part is of a prefabricated structure, and the bottom of the platform top part is installed on the platform body part in an assembled mode. According to the bridge abutment structure based on the prefabricated parts, the structures of the abutment base part, the abutment body part and the abutment top part are assembled in a prefabricated block mode, the bridge abutment can be prefabricated into the abutment base part, the abutment body part and the abutment top part in advance and then transported to a construction site to be assembled, the site construction rapidness and convenience of the bridge abutment can be improved, and the construction efficiency is improved; the situation that construction progress and construction conditions are affected by factors such as site environment and weather is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of prefabricated bridge foundation buildings, and in particular relates to a T-shaped abutment structure based on prefabricated components. Background Art

[0002] Abutments are located at both ends of a bridge. They are used to support the superstructure of the bridge and connect with the embankment. They mainly transfer the load of the superstructure of the bridge to the foundation, resist the fill pressure behind the abutment, and stabilize the roadbed at the bridgehead. Abutments have many forms, mainly divided into gravity abutments, light abutments, frame abutments, combined abutments, tension abutments, etc. Existing abutments are generally cast on site, which is easily affected by factors such as the site environment and weather, affecting the construction progress and construction conditions, resulting in extended construction period. Summary of the invention

[0003] The present application provides a T-type abutment structure based on prefabricated components, which is mainly used to solve the problem of low construction efficiency when using on-site cast-in-place in the prior art.

[0004] The present application provides a T-type abutment structure based on prefabricated components, comprising:

[0005] A base part, the base part is a prefabricated structure, and a mounting groove is provided on the top of the base part;

[0006] The platform body is a prefabricated structure, and the bottom of the platform body is assembled and installed in the groove structure;

[0007] The top of the platform is a prefabricated structure, and the bottom of the top of the platform is assembled and installed on the platform body.

[0008] The above-mentioned abutment structure based on prefabricated components can assemble and install the structures of the abutment base, abutment body and abutment top by prefabricating blocks. The abutment can be prefabricated into the abutment base, abutment body and abutment top in advance and then transported to the construction site for assembly, which can improve the speed and convenience of the abutment on-site construction, improve the construction efficiency, and reduce the impact of factors such as site environment and weather on the construction progress and construction conditions.

[0009] In the technical solution of one embodiment, the base portion includes multiple layers of bases with decreasing areas from bottom to top, and the top of each layer of the base has an assembly groove, and the corresponding assembly groove matches the shape of the upper layer of the base, and the bottom of the upper layer of the base is assembled in the groove structure at the top of the lower layer of the base.

[0010] In a technical solution of an embodiment, the base portion includes three layers of bases, namely a first base, a second base and a third base.

[0011] In the technical solution of one embodiment, the assembly point of the two adjacent layers of the base has a verticality adjustment structure, and the verticality adjustment structure includes a base groove and a plurality of adjustment gaskets; the base groove is opened at the lower end of the base located on the upper layer, and the plurality of adjustment gaskets are configured to be able to be loaded into the base groove in any number.

[0012] In the technical solution of one embodiment, limiting steel plates are installed on both sides of the assembly groove on the top of the base.

[0013] In a technical solution of an embodiment, an angled gasket is installed on the front side of the assembly groove on the top of the base.

[0014] In a technical solution of an embodiment, the platform body portion includes a front wall portion and a longitudinal wall portion, and the front wall portion and the longitudinal wall portion are cast integrally into a T-shaped structure.

[0015] In the technical solution of one embodiment, the assembly point of the platform body and the platform base has a verticality adjustment structure, and the verticality adjustment structure includes a base groove and a plurality of adjustment gaskets; the base groove is opened at the lower end of the longitudinal wall portion, and the plurality of adjustment gaskets are configured to be able to be loaded into the base groove in any number.

[0016] In the technical solution of one embodiment, foam strips are fixed to the front end and both sides of the top surface of the front wall portion.

[0017] In the technical solution of one embodiment, the top of the platform includes a top wall portion, a top cap portion and a road portion.

[0018] In a technical solution of one embodiment, the top cap portion is an independent prefabricated structure, which is assembled between the top wall portion and the longitudinal wall portion.

[0019] In the technical solution of one embodiment, the top cap portion includes a top cap substrate, and the top surface of the top cap substrate has a drainage eaves and a support pad; wherein, the top cap substrate is installed on the top surface of the longitudinal wall portion, and the support pad is supported on the bottom surface of the top wall portion.

[0020] In the technical solution of one embodiment, rounded corners are arranged on all four sides of the top surface of the top hat substrate.

[0021] In the technical solution of one embodiment, the road portion includes a top cap substrate, end walls located at the front and rear ends of the top cap substrate, and retaining walls located at the left and right sides of the top cap substrate, and the top cap substrate, the end walls and the retaining walls are all independent prefabricated components; the inner side of the retaining wall has an assembly slot, the left and right ends of the end wall are respectively engaged and assembled with the assembly slots on the corresponding sides, and the left and right sides of the top cap substrate are respectively engaged and assembled with the assembly slots on the corresponding sides.

[0022] In the technical solution of one embodiment, a plurality of drainage holes are opened on the retaining wall, and the plurality of drainage holes are all located in the assembly slot.

[0023] In the technical solution of one embodiment, the outer sides of the drainage holes are equipped with drainage pipes.

[0024] In a technical solution of an embodiment, the road portion further includes a concrete cushion layer, and the concrete cushion layer is laid on the top cap substrate.

[0025] In a technical solution of an embodiment, a waterproof layer is laid between the concrete cushion layer and the top cap substrate.

[0026] In the technical solution of one embodiment, the inner sides of the end wall and the retaining wall are provided with drainage portions arranged inwardly inclined.

[0027] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings in this application are used to illustrate preferred embodiments, so as to facilitate a person skilled in the art to clearly understand various other advantages and benefits, and should not be considered as limiting this application. In addition, the same reference numerals are used to represent the same components in all the drawings.

[0029] Figure 1 An overall diagram of a bridge abutment structure based on prefabricated components in one embodiment of the present application is shown.

[0030] Figure 2 An exploded view of an abutment structure based on prefabricated components in one embodiment of the present application is shown.

[0031] Figure 3 Shows Figure 2 Enlarged view of part A in the middle.

[0032] Figure 4 An exploded view of the top of the platform in one embodiment of the present application is shown.

[0033] Figure 5 A partial diagram of a road in an embodiment of the present application is shown.

[0034] Figure 6 A partial cross-sectional view of a road portion in an embodiment of the present application is shown.

[0035] Description of Figure Numbers:

[0036] 100, base; 110, first base; 120, second base; 121, base groove; 122, adjustment gasket; 130, third base; 131, assembly groove; 132, limit steel plate; 133, bevel gasket;

[0037] 200, platform body; 210, front wall; 220, longitudinal wall; 230, foam strip;

[0038] 300, platform top; 310, platform top wall; 320, top cap; 321, top cap base plate; 322, drainage eaves; 323, support pad; 324, corner fillet; 330, road portion; 331, road base plate; 332, end wall; 333, retaining wall; 334, assembly slot; 335, drainage hole; 336, drainage portion; 337, waterproof layer; 340, concrete cushion layer; 350, drainage pipe. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), unless otherwise clearly and specifically defined.

[0042] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] See also Figure 1-Figure 6 As shown, an embodiment of the present application provides a T-type abutment structure based on prefabricated components, which mainly includes a base 100, a body 200 and a top 300 from bottom to top. The base 100, the body 200 and the top 300 are all independent prefabricated structures, and are assembled by prefabricating blocks. Specifically, the top of the base 100 has an assembly groove 131, the bottom of the body 200 is assembled in the groove structure, and the bottom of the top 300 is assembled on the body 200. The above-mentioned abutment structure based on prefabricated components, the various structures of the base 100, the body 200 and the top 300 are assembled by prefabricating blocks, and the abutment can be prefabricated into the base 100, the body 200 and the top 300 in advance and then transported to the construction site for assembly, which can improve the speed and convenience of the abutment on-site construction, improve the construction efficiency, and reduce the situation where factors such as the site environment and weather affect the construction progress and construction conditions.

[0045] It is understandable that an assembly gap should be left between the assembly groove 131 of the body portion 200 and the base portion 100 , and a general assembly gap is 5 mm.

[0046] Specifically, the platform body 200 and the assembly groove 131 can be assembled by using the mortar method, in which the mortar is evenly spread in the assembly groove 131 in advance, and then the platform body 200 is accurately inserted into the assembly groove 131 by hoisting to achieve splicing.

[0047] Specifically, the base 100 includes multiple layers of bases with decreasing areas from bottom to top, and the top of each base has an assembly groove 131, and the corresponding assembly groove 131 matches the shape of the upper base, and the bottom of the upper base is assembled in the groove structure at the top of the lower base.

[0048] Specifically, the platform body 200 includes a front wall 210 and a longitudinal wall 220, and the front wall 210 and the longitudinal wall 220 are integrally cast into a T-shaped structure. The platform top 300 includes a platform top wall 310, a top cap 320 and a road portion 330. The top cap 320 is an independent prefabricated structure, which is assembled between the top wall 310 and the longitudinal wall 220.

[0049] Specific to Figure 2 In the embodiment shown, the base 100 includes three layers of bases, namely the first base 110, the second base 120 and the third base 130. The first base 110, the second base 120 and the third base 130 have the same shape, which is T-shaped, and the area decreases step by step. The assembly groove 131 is also T-shaped; wherein the assembly groove 131 on the upper surface of the next base matches the lower surface of the base of the previous layer. Specifically, the first base 110, the second base 120 and the third base 130 can all be assembled by the mortar sitting method, and the mortar is evenly spread in the assembly groove 131 in advance, and then the base of the previous layer is accurately inserted into the assembly groove 131 by hoisting to achieve splicing.

[0050] In some embodiments, the assembly of two adjacent bases has a verticality adjustment structure, which includes a base groove 121 and a plurality of adjustment gaskets 122; the base groove 121 is opened at the lower end of the base located at the upper layer, and the plurality of adjustment gaskets 122 are configured to be able to be loaded into the base groove 121 in any number. The thickness of the first base 110, the second base 120, and the third base 130 can be adjusted by increasing or decreasing the number of adjustment gaskets 122 during installation to adjust the verticality of the second base 120 and the third base 130; wherein the adjustment gaskets 122 are fixed with glue to avoid deviation when paving mortar.

[0051] In some embodiments, both sides of the assembly groove 131 on the top of the base 100 are installed with limiting steel plates 132. The limiting steel plates 132 installed on both sides can be used to calibrate the matching end surfaces between the body 200 and the assembly groove 131, so that the body 200 can accurately fall into the assembly groove 131.

[0052] In a further embodiment, an angled washer 133 may be installed on the front side of the assembly groove 131 on the top of the table base 100. When assembling the table body 200, the two sides of the table body 200 are aligned with the limiting steel plates 132 on both sides, and the table body 200 is moved forward. When the table body 200 hits the angled washer 133 and cannot move forward, the hoisted angled washer 133 is slowly dropped into the assembly groove 131 along the angled washer 133, and the limiting steel plates 132 and the table body 200 are kept parallel during the falling process, and the front end of the table body 200 is kept pressed against the angled washer 133 until the table body 200 is completely placed in the assembly groove 131.

[0053] In some embodiments, the assembly of the platform body 200 and the platform base 100 has a verticality adjustment structure, which includes a base groove 121 and a plurality of adjustment gaskets 122; the base groove 121 is opened at the lower end of the longitudinal wall 220, and the plurality of adjustment gaskets 122 are configured to be able to be loaded into the base groove 121 in any number. When installing the platform body 200 and the platform base 100, the thickness can be adjusted by increasing or decreasing the number of adjustment gaskets 122 to adjust the verticality of the platform body 200 and the platform base 100; wherein the adjustment gaskets 122 are fixed with glue to avoid deviation when paving mortar.

[0054] In some embodiments, foam strips 230 are fixed to the front end and both sides of the top surface of the front wall portion 210. When installing the table top 300, the foam strips 230 can be fixed to the front end and both sides of the top surface of the front wall portion 210 in advance, and the table top 300 is pulled from the back to the front, and the parallelism is adjusted according to the foam strips 230 on both sides until the table top 300 hits the foam strips 230 at the front end. After calibration, mortar is injected through the grouting pipe for splicing, assembly and bonding. The use of a reserved pipeline and a grouting pipe to inject mortar for splicing is a conventional construction process, so it will not be repeated.

[0055] In some embodiments, the top cap portion 320 includes a top cap substrate 321, and the top surface of the top cap substrate 321 has a drainage eave 322 and a support pad 323; wherein the top cap substrate 321 is installed on the top surface of the longitudinal wall portion 220, and the support pad 323 is supported on the bottom surface of the top wall portion 310. Corners 324 are arranged around the top surface of the top cap substrate 321. The drainage eave 322 is used to drain the accumulated water on the top cap portion 320 to the surroundings along the inclined ramp, and drain the top cap portion 320 along the corners 324.

[0056] In some embodiments, the road portion 330 includes a top cap substrate 321, end walls 332 located at the front and rear ends of the top cap substrate 321, and retaining walls 333 located at the left and right sides of the top cap substrate 321. The top cap substrate 321, the end wall 332, and the retaining wall 333 are all independent prefabricated components. The retaining wall 333 has an assembly slot 334 on the inner side, and the left and right ends of the end wall 332 are respectively engaged and assembled with the assembly slot 334 on the corresponding side, and the left and right sides of the top cap substrate 321 are respectively engaged and assembled with the assembly slot 334 on the corresponding side. The top cap substrate 321, the end wall 332, and the retaining wall 333 are all prefabricated in advance and are connected in an assembled manner, thereby improving construction efficiency.

[0057] Furthermore, a plurality of drainage holes 335 are provided on the retaining wall 333 , and the plurality of drainage holes 335 are all located in the assembly slot 334 for drainage. A drainage pipe 350 is provided on the outer side of the drainage holes 335 .

[0058] In some embodiments, the road portion 330 further includes a concrete cushion layer 340, which is laid on the top cap substrate 321. A waterproof layer 337 is laid between the concrete cushion layer 340 and the top cap substrate 321, and the waterproof layer 337 can play a waterproof role, and rainwater can be discharged along the drainage hole 335 and the drainage pipe 350.

[0059] Furthermore, the inner sides of the end wall 332 and the retaining wall 333 are provided with a drain portion 336 arranged inwardly inclined. Due to the presence of the waterproof layer 337, the accumulated water on the road will not seep down, but can be discharged from the top of the platform along the drain hole 335 and the drain pipe 350. When the water falls to the top of the end wall 332 and the retaining wall 333, it will enter the drain hole 335 and the drain pipe 350 along the inclined surface of the drain portion 336 and be discharged from the top of the platform, preventing it from accumulating on the top of the end wall 332 and the retaining wall 333.

[0060] The construction process of the above-mentioned T-type abutment structure based on prefabricated components may include:

[0061] (1) The platform body 200 adopts the mortar sitting method. After the mortar is evenly spread in the assembly groove 131 in advance, the platform body 200 is accurately inserted into the assembly groove 131 along the end surface of the limiting steel plate 132 by hoisting to achieve splicing. The base groove 121 can accommodate the insertion of the adjustment gasket 122. During installation, the thickness is adjusted by increasing or decreasing the number of adjustment gaskets 122 to adjust the verticality of the platform body 200;

[0062] (2) When assembling the platform body 200, the rear end of the platform body 200 is pressed against the limiting steel plates 132 on both sides and close to the angled gasket 133. When the platform body 200 hits the angled gasket 133 and cannot move forward, the hoisted platform body 200 is slowly lowered along the angled gasket 133 into the assembly groove 131. During the falling process, the two sides are kept parallel to the limiting steel plates 132, and the front end is kept pressed against the angled gasket 133.

[0063] (3) When installing the table top 300, the foam strips 230 are glued to the two sides and the front end of the longitudinal wall 220 in advance, and the table top 300 is pulled forward, and the parallelism is adjusted according to the foam strips 230 on both sides until the table top 300 hits the foam strips 230 at the front end. After calibration, mortar is injected through the grouting pipe for splicing, assembly and bonding;

[0064] (4) When the retaining wall 333 and the end wall 332 are assembled, mortar is spread on the assembly slots 334 on the retaining wall 333 and the connecting end faces of the end wall 332 in order. First, the two side portions of the road base plate 331 are inserted into the assembly slots 334. Then, the end wall 332 is connected from the front end of the road base plate 331 along the assembly slots 334 and then fastened to the periphery by a prefabricated fixing frame so that it is completely solidified and stabilized. Then, the fixing frame is removed.

[0065] In summary, this application has the following beneficial effects:

[0066] (1) The present application adopts a prefabricated block method to assemble the structures of the platform base 100, the platform body 200 and the platform top 300, which are prefabricated into blocks to form the parts of the abutment and then transported to the construction site for assembly. By setting up assembly methods for various components and using auxiliary components, the problems of slow assembly of prefabricated blocks and easy dislocation of assembly are solved, thereby achieving the effect of improving the speed and convenience of on-site construction of the abutment and reducing the impact of factors such as site environment and weather on the construction progress and construction conditions.

[0067] (2) The angled gasket 133 equipped in the adjustment structure of the present application is an angled gasket 133 having an inclined end surface that matches the inclined end surface of the longitudinal wall portion 220. The angled gasket 133 is used to position and assemble the longitudinal wall portion 220; in conjunction with the limiting steel plate 132, the problem of difficulty in correctly assembling to a fixed position during assembly is solved, thereby achieving the effect of reducing the difficulty of on-site construction, improving construction efficiency, and reducing construction time and on-site layout.

[0068] (3) When filling the mortar, the present application adopts a method of reasonably arranging the angled gaskets 133, the limiting steel plates 132 and the adjusting gaskets 122, etc., which solves the problem of easy deviation during the construction of the prefabricated structure and achieves the convenience and reliability of the construction of the mortar for filling the joints.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A T-type abutment structure based on prefabricated components, characterized in that: include: A base part (100), the base part (100) is a prefabricated structure, and a mounting groove (131) is provided on the top of the base part (100); A platform body (200), the platform body (200) is a prefabricated structure, and the bottom of the platform body (200) is assembled and installed in the groove structure; The platform top portion (300) is a prefabricated structure, and the bottom of the platform top portion (300) is assembled and installed on the platform body portion (200).

2. The T-type abutment structure based on prefabricated components according to claim 1 is characterized in that: The base part (100) comprises multiple layers of bases with decreasing areas from bottom to top, and the top of each layer of the base has an assembly groove (131), and the corresponding assembly groove (131) matches the shape of the base of the upper layer, and the bottom of the upper layer base is assembled and installed in the groove structure at the top of the lower layer base.

3. The T-type abutment structure based on prefabricated components according to claim 2 is characterized in that: The assembly position of the two adjacent layers of the base is provided with a verticality adjustment structure, and the verticality adjustment structure comprises a base groove (121) and a plurality of adjustment gaskets (122); the base groove (121) is opened at the lower end of the base located at the upper layer, and the plurality of adjustment gaskets (122) are configured to be able to be loaded into the base groove (121) in any number.

4. The T-type abutment structure based on prefabricated components according to claim 1 is characterized in that: Limiting steel plates (132) are installed on both sides of the assembly groove (131) at the top of the base (100); and an angled gasket (133) is installed on the front side of the assembly groove (131) at the top of the base (100).

5. The T-type abutment structure based on prefabricated components according to claim 1, characterized in that: The platform body (200) comprises a front wall portion (210) and a longitudinal wall portion (220), wherein the front wall portion (210) and the longitudinal wall portion (220) are integrally cast into a T-shaped structure; foam strips (230) are fixed to the front end and both sides of the top surface of the front wall portion (210).

6. The T-type abutment structure based on prefabricated components according to claim 5, characterized in that: The assembly point of the platform body (200) and the platform base (100) has a verticality adjustment structure, and the verticality adjustment structure includes a base groove (121) and a plurality of adjustment gaskets (122); the base groove (121) is opened at the lower end of the longitudinal wall (220), and the plurality of adjustment gaskets (122) are configured to be able to be installed in the base groove (121) in any number.

7. The T-type abutment structure based on prefabricated components according to claim 1 is characterized in that: The platform top (300) includes a platform top wall portion (310), a top cap portion (320) and a road portion (330); the top cap portion (320) is an independent prefabricated structure, which is assembled between the top wall portion (310) and the longitudinal wall portion (220); the top cap portion (320) includes a top cap substrate (321), and the top surface of the top cap substrate (321) has a drainage eaves (322) and a support pad (323), wherein the top cap substrate (321) is installed on the top surface of the longitudinal wall portion (220), the support pad (323) is supported on the bottom surface of the top wall portion (310), and the top surface of the top cap substrate (321) is provided with rounded corners (324) on all four sides.

8. The T-type abutment structure based on prefabricated components according to claim 7, characterized in that: The road portion (330) comprises a top cap substrate (321), end walls (332) located at the front and rear ends of the top cap substrate (321), and retaining walls (333) located at the left and right sides of the top cap substrate (321); the top cap substrate (321), the end walls (332) and the retaining walls (333) are all independent prefabricated components; the retaining wall (333) has an assembly slot (334) on the inner side, the left and right ends of the end wall (332) are respectively engaged and assembled with the assembly slot (334) on the corresponding side, and the left and right sides of the top cap substrate (321) are respectively engaged and assembled with the assembly slot (334) on the corresponding side.

9. The T-type abutment structure based on prefabricated components according to claim 8, characterized in that: The retaining wall (333) is provided with a plurality of drainage holes (335), the plurality of drainage holes (335) are all located in the assembly slot (334), and drainage pipes (350) are provided on the outsides of the drainage holes (335).

10. The T-type abutment structure based on prefabricated components according to claim 9, characterized in that: The road portion (330) further comprises a concrete cushion layer (340), wherein the concrete cushion layer (340) is laid on the top cap substrate (321), and a waterproof layer (337) is laid between the concrete cushion layer (340) and the top cap substrate (321); the inner sides of the end wall (332) and the retaining wall (333) are provided with a drainage portion (336) arranged inwardly inclined.

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