Rigid-flexible transition connection structure of reservoir bank asphalt panel and permanent building and construction method of rigid-flexible transition connection structure

Abstract

The invention provides a rigid-flexible transition connection structure of a reservoir bank asphalt panel and a permanent building and a construction method of the rigid-flexible transition connection structure. The rigid-flexible transition connection structure comprises a special-shaped bearing platform and an asphalt panel lap joint structure which are arranged in an asphalt panel anti-seepage area of a reservoir bank, the periphery of the asphalt panel lap joint structure is integrally connected with the reservoir bank asphalt panel in the asphalt panel anti-seepage area to form a continuous anti-seepage body; the special-shaped bearing platform is located on a side slope foundation of a reservoir bank, the special-shaped bearing platform comprises a main body part used for being connected with a permanent building and a connecting part arranged on the periphery of the main body part in the circumferential direction, the asphalt panel lap joint structure is connected to the surface of the connecting part in a lap joint mode, and the end of the asphalt panel lap joint structure is connected with the main body part. As a connecting structure between the reservoir bank asphalt panel and the permanent building, the reservoir bank asphalt panel can be effectively prevented from cracking, stripping or disengaging and other damage in the reservoir operation period, so that a leakage channel is prevented from being formed, and the overall seepage-proofing safety of the reservoir is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of reservoir engineering technology for full-basin seepage prevention, specifically to a rigid-flexible transition connection structure between reservoir bank asphalt panels and permanent structures, and its construction method. Background Technology

[0002] Asphalt concrete anti-seepage panels, as a flexible anti-seepage structure, possess excellent adaptability to foundation deformation and self-healing properties, and are widely used in various reservoir anti-seepage projects. However, in reservoir projects where asphalt concrete panels are used for anti-seepage throughout the entire reservoir basin, the connection between the anti-seepage panels on the reservoir bank and permanent structures crossing them (such as bridge piers and water towers) has always been one of the difficulties and key points in engineering design. When this flexible panel needs to be connected to rigid concrete structures (such as bridge piers), there are significant differences between the two materials in terms of stiffness, deformation modulus, and temperature sensitivity. During the reservoir's operation, due to factors such as changes in water load, temperature fluctuations, and foundation settlement, uneven displacement and deformation will occur between the rigid bridge piers and the flexible reservoir bank. This deformation concentration effect can easily cause stress concentration at the connection points, leading to cracking, peeling, or voids in the asphalt concrete panel, ultimately forming seepage channels and endangering the anti-seepage safety of the entire reservoir. Traditional joint treatment methods, such as installing waterstops at the joints or using simple asphalt mastic sealing, are often insufficient to effectively coordinate the deformation between rigidity and flexibility. They are not adaptable enough to situations with large deformations and their long-term reliability is unsatisfactory. This problem is particularly prominent in reservoir areas with repeated rises and falls in water levels and wet-dry cycles.

[0003] Therefore, how to design a safe, reliable, and durable connection structure that can ensure the integrity and continuity of the asphalt concrete panel seepage prevention system, and effectively release or coordinate the differential deformation between the bridge pier and the reservoir bank, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the first objective of this invention is to provide a rigid-flexible transition connection structure between reservoir bank asphalt panels and permanent structures. This invention, as a connection structure between reservoir bank asphalt panels and permanent structures, effectively prevents damage such as cracking, peeling, or voiding of the reservoir bank asphalt panels during reservoir operation, thereby avoiding the formation of seepage channels and ensuring the overall seepage prevention safety of the reservoir.

[0005] In a first aspect, the present invention provides a rigid-flexible transition connection structure between a reservoir bank asphalt panel and a permanent structure, comprising an irregularly shaped support platform and an asphalt panel overlapping structure disposed within the asphalt panel seepage prevention zone of the reservoir bank. The outer periphery of the asphalt panel overlapping structure is integrally connected to the reservoir bank asphalt panel within the asphalt panel seepage prevention zone to form a continuous seepage prevention body. The irregularly shaped support platform is situated on the slope foundation of the reservoir bank. The irregularly shaped support platform includes a main body for connecting to the permanent structure and a connecting part circumferentially disposed around the main body. The asphalt panel overlapping structure overlaps and connects to the surface of the connecting part, and is connected to the main body at its end.

[0006] As a preferred technical solution of the present invention: the outer periphery of the connecting part is configured as a connecting segment, the thickness of the connecting segment gradually decreases from the inside to the outside, its surface is configured as an inclined surface that slopes towards the slope foundation surface, and the surface of the connecting segment is smoothly connected to the slope foundation surface.

[0007] The asphalt panel overlap structure includes a cushion layer, an asphalt concrete leveling and bonding layer, and an asphalt concrete anti-seepage layer, which are arranged sequentially from the inside to the outside on the slope of the reservoir bank. The cushion layer and the asphalt concrete leveling and bonding layer partially overlap the surface of the connecting section, and the asphalt concrete anti-seepage layer overlaps the surface of the remaining parts of the connection except for the connecting section.

[0008] As a preferred embodiment of the present invention, the surface of the connecting segment and the remaining connecting parts of the connecting portion are connected by an arc-shaped transition.

[0009] As a preferred technical solution of the present invention: a polyester mesh thickening layer is provided at the bottom of the asphalt concrete anti-seepage layer, and the polyester mesh thickening layer is provided in the overlapping area of ​​the asphalt concrete anti-seepage layer and the connection part and in a set range around the overlapping area.

[0010] The set range is larger than the projection area of ​​the connecting segment on the plane.

[0011] As a preferred technical solution of the present invention: an asphalt mortar wedge is provided between the asphalt concrete leveling and bonding layer, the polyester mesh thickening layer and the connecting section.

[0012] As a preferred embodiment of the present invention: the end of the asphalt concrete anti-seepage layer is connected to the main body, and an elastic seal is filled between the asphalt concrete anti-seepage layer and the main body.

[0013] As a preferred technical solution of the present invention: the upper part of the main body is configured as a step-like structure, the step-like structure including a horizontal plane, two side elevations and a front elevation;

[0014] The horizontal plane is used to connect with the permanent structure, and the end of the horizontal plane is connected to the bottom of the connection above it. The lower end of the front facade is connected to the top of the connection below it. The lower ends of the two side facades are connected to the connection on their sides, so that the connection parts arranged at different elevations on the reservoir bank can be on the same inclined plane.

[0015] As a preferred technical solution of the present invention: the bottom of the irregular-shaped foundation is connected to the slope foundation of the reservoir bank, and anchor bars are connected between the irregular-shaped foundation and the slope foundation of the reservoir bank.

[0016] As a preferred embodiment of the present invention, the main body and the connecting portions around the main body are integrally formed.

[0017] Secondly, a second objective of the present invention is to provide a construction method for a rigid-flexible transition connection structure between a reservoir bank asphalt panel and a permanent building, wherein the construction of any of the above-described rigid-flexible transition connection structures includes the following steps:

[0018] S1. The first phase of excavation is carried out on the slope of the reservoir bank, excavating to the design elevation of the main foundation of the irregular-shaped pile cap, and locally expanding the excavation according to the foundation size of the irregular-shaped pile cap to form a construction platform for the pile body.

[0019] S2. After drilling the construction piles, carry out the second phase of excavation, that is, excavate the reservoir bank slope below the design elevation of the main foundation.

[0020] S3. Construct anchor bars for irregularly shaped foundations on the slope of the excavated reservoir bank;

[0021] S4. After constructing the pile body, tie the special-shaped pile cap reinforcement and pour the special-shaped pile cap concrete.

[0022] S5. After tying permanent building steel bars and pouring permanent building concrete, fill the foundation material to form a foundation layer.

[0023] S6. Spray emulsified asphalt on the surface of the subbase for protection, then pave and compact the asphalt concrete leveling and bonding layer, while reserving areas near the irregularly shaped foundation where mechanical compaction is not possible.

[0024] S7. Manually clean the uncompacted area reserved in step S6, removing scattered asphalt concrete and surrounding subbase materials to form a space for filling the asphalt mortar wedge; lay an asphalt concrete leveling and bonding layer at the bottom of the space and manually compact it to connect it with the surrounding compacted asphalt concrete leveling and bonding layer to form a whole; then lay asphalt mortar to form a transition surface flush with the surrounding asphalt concrete leveling and bonding layer.

[0025] S8. Lay the polyester mesh thickened layer and the asphalt concrete anti-seepage layer in sequence, and compact them.

[0026] S9. A layer of asphalt mastic is applied to the surface of the asphalt concrete anti-seepage layer to form a surface sealing layer. A small gap is reserved at the contact end between the asphalt concrete anti-seepage layer and the irregular shaped foundation, and asphalt mastic is used to fill the gap to form an elastic end seal.

[0027] The beneficial effects of the rigid-flexible transition connection structure between reservoir bank asphalt panels and permanent buildings and the construction method provided by this invention are as follows:

[0028] 1. This invention achieves the integrity and continuity of the seepage prevention body by directly laying the asphalt panel overlap structure, which is integrally connected with the asphalt panel of the reservoir bank, on the connection part of the irregular shaped foundation. This fundamentally avoids the formation of direct and difficult-to-treat joints at the root of permanent buildings. Furthermore, the asphalt concrete seepage prevention layer is filled with an elastic sealant between itself and the main body, which further enhances the sealing effect.

[0029] 2. The connecting part of the irregularly shaped bearing platform of this invention (especially the arc-shaped transition connection design) provides a smooth transition base for the asphalt panel overlap structure integrally connected with the reservoir bank asphalt panel, effectively dispersing stress concentration at the connection point. The asphalt mortar wedge-shaped body and the polyester mesh thickened layer of the asphalt panel overlap structure together form a flexible buffer reinforcement zone, which can effectively absorb and coordinate the differential deformation between the rigid and flexible structures, preventing panel cracking.

[0030] 3. This invention can be widely applied to the banks of various reservoirs with full basin seepage prevention, providing a new solution for the seepage prevention problem of bridge piers in reservoirs, and has important value for promotion and application. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A plan view of the rigid-flexible transition connection structure provided in an embodiment of the present invention;

[0033] Figure 2 for Figure 1 Cross-sectional view of AA in the middle;

[0034] Figure 3 for Figure 1 Cross-sectional view of BB in the middle;

[0035] Figure 4This is a schematic diagram of the construction state of the rigid-flexible transition connection structure provided in an embodiment of the present invention;

[0036] Figure 5 for Figure 2 A magnified view of a section at point C.

[0037] Attached reference numerals: 1. Irregularly shaped pile cap; 2. Pile body; 3. Pier; 4. Anchor bar; 5. Subbase; 6. Asphalt concrete leveling and bonding layer; 7. Asphalt concrete anti-seepage layer; 8. Polyester mesh thickened layer; 9. Asphalt mortar wedge; 10. Main body; 11. Elastic sealing body; 12. Connection part; 13. Reservoir bank slope foundation; 14. Connecting section; 15. Slope foundation surface; 16. Horizontal plane; 17. Side elevation; 18. Front elevation; 19. First phase excavation; 20. Second phase excavation. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solutions of the present invention, preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting the present invention. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present invention.

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0040] like Figures 1 to 3 as well as Figure 5 As shown, a rigid-flexible transition connection structure between a reservoir bank asphalt panel and a permanent structure includes an irregularly shaped support 1 located within the asphalt panel seepage prevention zone of the reservoir bank and an asphalt panel overlapping structure. The outer periphery of the asphalt panel overlapping structure is integrally connected to the reservoir bank asphalt panel within the asphalt panel seepage prevention zone to form a continuous seepage prevention body. The irregularly shaped support 1 is situated on the slope foundation 13 of the reservoir bank. The irregularly shaped support 1 includes a main body 10 for connecting with the permanent structure and connecting parts 12 circumferentially located around the main body 10. In this embodiment, the permanent structure is a bridge pier 3, which uses a pile foundation. During construction, its vertical reinforcing bars are connected to the vertical reinforcing bars of the irregularly shaped support 1 to form an integral whole. The asphalt panel overlapping structure overlaps and connects to the surface of the connecting part 12, and is connected to the main body 10 at its end.

[0041] The outer periphery of the connecting part 12 is configured as a connecting section 14, the thickness of the connecting section 14 gradually decreases from the inside to the outside, and its surface is configured as an inclined surface that slopes toward the slope foundation surface 15. The surface of the connecting section 14 is smoothly connected to the slope foundation surface 15.

[0042] The asphalt panel overlap structure includes a cushion layer 5, an asphalt concrete leveling and bonding layer 6, an asphalt concrete anti-seepage layer 7, and a 2mm thick asphalt mastic forming a surface sealing layer, which are arranged sequentially from the inside to the outside on the slope foundation 13 of the reservoir bank. The cushion layer 5 and the asphalt concrete leveling and bonding layer 6 partially overlap the surface of the connecting section 14, and the asphalt concrete anti-seepage layer 7 overlaps the surface of the remaining parts of the connecting part 12 except for the connecting section.

[0043] The surface of the connecting segment 14 is connected to the remaining connecting parts of the connecting part 12 by an arc-shaped transition, thereby reducing the stress concentration problem at the connection between the connecting segment 14 and the asphalt mortar wedge 9 and the polyester mesh thickened layer 8.

[0044] A polyester mesh thickening layer 8 is provided at the bottom of the asphalt concrete anti-seepage layer 7. The polyester mesh thickening layer 8 is provided in the overlapping area between the asphalt concrete anti-seepage layer 7 and the connecting part 12 and within a set range around the overlapping area.

[0045] The defined range is greater than the projected area of ​​the connecting section 14 and the asphalt mortar wedge 9 on the plane. In this embodiment, the defined range is specifically the connecting part 12 plus the asphalt mortar wedge 9 and an outward expansion of not less than 50cm.

[0046] An asphalt mortar wedge 9 is provided between the asphalt concrete leveling and bonding layer 6, the polyester mesh thickening layer 8, and the connecting section 14. The polyester mesh thickening layer 8 and the asphalt mortar wedge 9 are provided to accommodate local abrupt boundary conditions.

[0047] The end of the asphalt concrete anti-seepage layer 7 is connected to the main body 10, and an elastic sealing body 11 is filled between the asphalt concrete anti-seepage layer 7 and the main body 10.

[0048] The upper part of the main body 10 is configured as a step-like structure, which includes a horizontal surface 16, two side surfaces 17 and a front surface 18.

[0049] The horizontal plane 16 is used to connect with the permanent structure, and the end of the horizontal plane 16 is connected to the bottom of the connecting part 12 located above it. The lower end of the front facade 18 is connected to the top of the connecting part 12 located below it. The lower ends of the two side facades 17 are connected to the connecting parts 12 located on their sides, so that the connecting parts 12 arranged at different elevations on the reservoir bank can be on the same inclined plane.

[0050] The bottom of the irregular-shaped foundation 1 is connected to the slope foundation 13 of the reservoir bank, and in order to improve the overall reliability of the structure, anchor bars 4 are connected between the irregular-shaped foundation 1 and the slope foundation 13 of the reservoir bank.

[0051] The main body 10 and the connecting parts 12 around the main body 10 are integrally formed, that is, the main body 10 and the connecting parts 12 around the main body 10 are integrally cast reinforced concrete structures.

[0052] like Figure 4 As shown, the present invention also provides a construction method for a rigid-flexible transition connection structure between a reservoir bank asphalt panel and a permanent building. The construction of any of the above-described rigid-flexible transition connection structures includes the following steps:

[0053] S1. The first phase of excavation 19 is carried out on the slope of the reservoir bank, excavating to the design elevation of the main body 10 of the irregular pile cap 1, and locally expanding the excavation according to the foundation size of the irregular pile cap 1 to form a construction platform for the pile body 2.

[0054] S2. After drilling the construction pile 2, the second phase of excavation 20 is carried out, that is, the reservoir bank slope below the design elevation of the main body 10 foundation is excavated.

[0055] S3. Construct anchor bars 4 for irregularly shaped foundation 1 on the slope of the excavated reservoir bank;

[0056] S4. After constructing pile 2, reinforce the special-shaped pile cap 1 with steel bars and pour concrete for the special-shaped pile cap 1.

[0057] S5. After tying permanent building steel bars and pouring permanent building concrete, fill the cushion material to form cushion layer 5. In the area near the irregular pier 1 where it is not possible to carry out slope mechanical compaction, small machinery is used for manual compaction.

[0058] S6. Spray emulsified asphalt onto the surface of the compacted subbase 5 for protection, then pave and compact the asphalt concrete leveling cement layer 6, while reserving an area near the irregular pier 1 where mechanical compaction is not possible.

[0059] S7. Manually clean the uncompacted area reserved in step S6, removing scattered asphalt concrete and surrounding subbase materials to form a space for filling the asphalt mortar wedge 9; lay an asphalt concrete leveling and bonding layer 6 at the bottom of the space and manually compact it to connect it with the surrounding already compacted asphalt concrete leveling and bonding layer 6 to form a whole; then lay asphalt mortar, manually compact it, and form a transition surface flush with the surrounding asphalt concrete leveling and bonding layer 6.

[0060] S8. Lay the polyester mesh thickened layer 8 and the asphalt concrete anti-seepage layer 7 in sequence, and compact them. In areas near the irregular pier 1 where mechanical compaction on the slope is not possible, manual tamping is used.

[0061] S9. A layer of asphalt mastic is applied to the surface of the asphalt concrete to form a surface sealing layer. A small gap is reserved at the end where the asphalt concrete anti-seepage panel contacts the irregular pier 1, and asphalt mastic is used to fill the gap to form an elastic seal 11.

[0062] In this invention, the vertical main reinforcement of the pile extends into the irregularly shaped pile cap and connects with the pier reinforcement. Anchor bars are set between the pile cap and the slope foundation of the reservoir bank. These measures greatly enhance the overall connection between the pile, pile cap, and pier, improve structural stability, and enhance the ability to resist uneven settlement.

[0063] The construction method of this invention proposes special treatment processes (such as manual compaction, wedge-shaped body making, etc.) for areas that are difficult for machinery to operate near irregularly shaped foundations, ensuring the construction quality of special parts.

[0064] Based on the description and drawings of this invention, those skilled in the art can easily manufacture or use the rigid-flexible transition connection structure between the reservoir bank asphalt panel and permanent buildings and its construction method, and can achieve the positive effects described in this invention.

[0065] Unless otherwise specified, in this invention, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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, the terms used to describe orientation or positional relationships in this invention are for illustrative purposes only and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0066] Unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A rigid-flexible transition connection structure between reservoir bank asphalt panels and permanent structures, characterized in that: The system includes an irregularly shaped support platform and an asphalt panel overlapping structure located within the asphalt panel seepage prevention zone on the reservoir bank. The outer periphery of the asphalt panel overlapping structure is integrally connected to the asphalt panel on the reservoir bank within the asphalt panel seepage prevention zone, forming a continuous seepage prevention body. The irregularly shaped support platform is situated on the slope foundation of the reservoir bank. The irregularly shaped support platform includes a main body for connection to permanent structures and connecting parts circumferentially located around the main body. The asphalt panel overlapping structure overlaps and connects to the surface of the connecting parts, and is connected to the main body at its end.

2. The rigid-flexible transition connection structure between the reservoir bank asphalt panel and permanent structures according to claim 1, characterized in that: The outer periphery of the connecting part is configured as a connecting segment, the thickness of the connecting segment gradually decreases from the inside to the outside, and its surface is configured as an inclined surface that slopes towards the slope foundation surface. The surface of the connecting segment is smoothly connected to the slope foundation surface. The asphalt panel overlap structure includes a cushion layer, an asphalt concrete leveling and bonding layer, and an asphalt concrete anti-seepage layer, which are arranged sequentially from the inside to the outside on the slope of the reservoir bank. The cushion layer and the asphalt concrete leveling and bonding layer partially overlap the surface of the connecting section, and the asphalt concrete anti-seepage layer overlaps the surface of the remaining parts of the connection except for the connecting section.

3. The rigid-flexible transition connection structure between the reservoir bank asphalt panel and permanent buildings according to claim 2, characterized in that: The surface of the connecting segment is connected to the remaining connecting parts of the connecting part by an arc-shaped transition.

4. The rigid-flexible transition connection structure between the reservoir bank asphalt panel and permanent structures according to claim 2, characterized in that: A polyester mesh thickening layer is provided at the bottom of the asphalt concrete anti-seepage layer, and the polyester mesh thickening layer is provided in the overlapping area between the asphalt concrete anti-seepage layer and the connection part and in a set range around the overlapping area. The set range is larger than the projection area of ​​the connecting segment on the plane.

5. The rigid-flexible transition connection structure between the reservoir bank asphalt panel and permanent structures according to claim 4, characterized in that: An asphalt mortar wedge is set between the asphalt concrete leveling and bonding layer, the polyester mesh thickening layer, and the connecting section.

6. The rigid-flexible transition connection structure between the reservoir bank asphalt panel and permanent buildings according to claim 2, characterized in that: The end of the asphalt concrete anti-seepage layer is connected to the main body, and an elastic seal is filled between the asphalt concrete anti-seepage layer and the main body.

7. The rigid-flexible transition connection structure between the reservoir bank asphalt panel and permanent buildings according to claim 1, characterized in that: The upper part of the main body is configured as a stepped structure, which includes a horizontal plane, two side elevations and a front elevation. The horizontal plane is used to connect with the permanent structure, and the end of the horizontal plane is connected to the bottom of the connection above it. The lower end of the front facade is connected to the top of the connection below it. The lower ends of the two side facades are connected to the connection on their sides, so that the connection parts arranged at different elevations on the reservoir bank can be on the same inclined plane.

8. The rigid-flexible transition connection structure between the reservoir bank asphalt panel and permanent structures according to claim 1, characterized in that: The bottom of the irregularly shaped foundation is connected to the slope foundation of the reservoir bank, and anchor bars are connected between the irregularly shaped foundation and the slope foundation of the reservoir bank.

9. The rigid-flexible transition connection structure between the reservoir bank asphalt panel and permanent buildings according to claim 1, characterized in that: The main body and the connecting parts around the main body are integrally formed.

10. A construction method for a rigid-flexible transition connection structure between a reservoir bank asphalt panel and a permanent building, characterized in that, The construction of the rigid-flexible transition connection structure according to any one of claims 1-9 includes the following steps: S1. The first phase of excavation is carried out on the slope of the reservoir bank, excavating to the design elevation of the main foundation of the irregular-shaped pile cap, and locally expanding the excavation according to the foundation size of the irregular-shaped pile cap to form a construction platform for the pile body. S2. After drilling the construction piles, carry out the second phase of excavation, that is, excavate the reservoir bank slope below the design elevation of the main foundation. S3. Construct anchor bars for irregularly shaped foundations on the slope of the excavated reservoir bank; S4. After constructing the pile body, tie the special-shaped pile cap reinforcement and pour the special-shaped pile cap concrete. S5. After tying permanent building steel bars and pouring permanent building concrete, fill the foundation material to form a foundation layer. S6. Spray emulsified asphalt on the surface of the subbase for protection, then pave and compact the asphalt concrete leveling and bonding layer, while reserving areas near the irregularly shaped foundation where mechanical compaction is not possible. S7. Manually clean the uncompacted area reserved in step S6, removing scattered asphalt concrete and surrounding subbase materials to form a space for filling the asphalt mortar wedge; lay an asphalt concrete leveling and bonding layer at the bottom of the space and manually compact it to connect it with the surrounding compacted asphalt concrete leveling and bonding layer to form a whole; then lay asphalt mortar to form a transition surface flush with the surrounding asphalt concrete leveling and bonding layer. S8. Lay the polyester mesh thickened layer and the asphalt concrete anti-seepage layer in sequence, and compact them. S9. A layer of asphalt mastic is applied to the surface of the asphalt concrete anti-seepage layer to form a surface sealing layer. A small gap is reserved at the contact end between the asphalt concrete anti-seepage layer and the irregular shaped foundation, and asphalt mastic is used to fill the gap to form an elastic end seal.

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