Method for improving anti-seismic performance between old aqueduct sections and overall heat preservation and anti-permeability performance

Abstract

The invention belongs to the technical field of old aqueduct protection and performance improvement, and particularly relates to a method for improving old aqueduct internode anti-seismic performance and overall heat preservation anti-permeability performance, by optimizing old aqueduct internode connection, local treatment is conducted on the surface of an old aqueduct concrete aqueduct wall, so that the old aqueduct concrete aqueduct wall is clean and flat, and the overall aqueduct anti-seismic performance is improved. Then, screws are planted on the two sides of the old concrete aqueduct intersections, and after the screws are planted, thin-layer weather-proof steel plate dampers are installed through nuts, so that the anti-seismic property of the old aqueduct intersections is improved; then the concrete tank wall of the old aqueduct is optimized, a heat preservation layer is additionally arranged on the surface of the concrete tank wall of the old aqueduct, and the overall heat preservation performance of the old aqueduct is improved; and finally, a waterproof layer is painted on the surface of the concrete aqueduct wall heat preservation layer of the old aqueduct, and the overall anti-seepage performance of the old aqueduct is improved. By means of the method, staged energy consumption can be achieved, the overall anti-seismic performance, the thermal insulation performance and the anti-permeability performance are improved, and meanwhile original appearance protection can be achieved to the maximum extent.

Description

Technical Field

[0001] The present invention belongs to the technical field of protection and performance improvement of old aqueducts, and specifically relates to a method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of internodes of old aqueducts. Background Art

[0002] Aqueducts are overhead water channels that convey water across rivers, valleys, depressions and roads. Aqueducts are mainly built with materials such as stone masonry, concrete and reinforced concrete. Some large-span aqueducts carry floodwaters downstream, divert water through the channel body and allow traffic to pass through the channel. Due to their long service life, some old aqueducts have lost their original functions; however, some are still in use and their functions have been expanded from a single irrigation function to an urban water supply function, and they are in a state of uninterrupted water supply. However, due to the lack of effective earthquake-resistant measures in the old aqueducts, it is difficult to meet the needs of uninterrupted water supply for lifeline projects under earthquakes.

[0003] At the same time, due to the lack of effective anti-seepage measures between the sections of the old box-section concrete aqueduct, water leakage between the sections is prone to occur, resulting in waste of water resources. In addition, the old concrete aqueduct wall lacks effective insulation measures. Especially in the water-scarce mountainous areas in the north in winter, the temperature difference between day and night is large, it is easy to freeze and it is difficult to stably transport water, affecting the water transport efficiency and water supply guarantee capabilities. Therefore, for the old aqueducts in service, there is an urgent need for a method to improve the seismic resistance and overall thermal insulation and anti-seepage performance of the old aqueduct sections. In addition, traditional reinforcement and thermal insulation and anti-seepage performance improvement methods often require the destruction of the facade of the aqueduct and the on-site construction operations are complicated. At the same time, the existing old aqueducts, as agricultural cultural heritage, have certain protection value. Therefore, it is imperative to develop a method to improve the seismic resistance and overall thermal insulation and anti-seepage performance of the old aqueduct sections without destroying the facade of the old aqueduct structure. Summary of the invention

[0004] In order to solve the problems existing in the prior art that old aqueducts lack effective earthquake resistance, thermal insulation and anti-seepage measures, are difficult to meet the demand for uninterrupted water supply, require destruction of the facade of the aqueduct and have complicated on-site construction operations, the present invention provides a method for improving the earthquake resistance and overall thermal insulation and anti-seepage performance of internodes of old aqueducts, which can effectively improve the earthquake resistance and overall thermal insulation and anti-seepage performance of internodes of old aqueducts without destroying the facade of the old aqueduct structure.

[0005] The present invention first provides a method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes, comprising the following steps:

[0006] Step 1: Optimize the inter-node connection of the old aqueduct, perform local treatment on the surface of the concrete wall of the old aqueduct to make it clean and flat, and then plant screws on both sides of the old aqueduct inter-node. After the screws are planted, install the thin-layer weathering steel plate damper with nuts to improve the seismic performance of the old aqueduct inter-node;

[0007] Step 2: Optimize the concrete wall of the old aqueduct, add a thermal insulation layer on the surface of the concrete wall of the old aqueduct, and improve the overall thermal insulation performance of the old aqueduct;

[0008] Step 3: Apply a waterproof layer on the surface of the insulation layer of the concrete wall of the old aqueduct to improve the overall anti-seepage performance of the old aqueduct.

[0009] Preferably, the method for optimizing the connection between the old aqueduct sections in step one includes: processing the original concrete trough wall of the old aqueduct, firstly performing moderate roughening treatment and washing the floating slurry, waiting for the surface of the concrete trough wall of the old aqueduct to be clean and smooth, and then implanting screws on both sides of the old concrete aqueduct sections, the positions of the implanted screws coincide with the holes of the thin-layer weather-resistant steel plate dampers, and after the screws are implanted, the thin-layer weather-resistant steel plate dampers are installed using nuts.

[0010] Preferably, the method for optimizing the internode connection of the old aqueduct in step one includes spraying polyurethane thermal insulation material at the internodes of the old aqueduct before planting the screws to form a flexible water-stop layer. By spraying the polyurethane thermal insulation material, the water-stopping performance of the internodes of the old aqueduct is optimized and a certain amount of expansion and contraction can be provided, thereby satisfying both deformation requirements and anti-seepage requirements.

[0011] Preferably, in the step one, the thin layer weather-resistant steel plate damper has an elliptical opening in the middle, and the hollowing out in the middle can weaken the stiffness of the steel plate to a certain extent. The holes on both sides are arranged in a plum blossom pile manner, one side is a round hole, which is convenient for installation and plays a fixing role, and the other side is an oblong hole. While playing a fixing role, it can also rely on the screws implanted on both sides of the internode to slide in the oblong hole of the thin layer weather-resistant steel plate damper to effectively dissipate energy when there is slight deformation caused by thermal expansion and contraction or small earthquakes. Both sides of the thin layer weather-resistant steel plate damper are arc transitions, which can avoid stress concentration to the greatest extent and realize full energy dissipation of the damper.

[0012] Preferably, when installing the thin-layer weathering steel plate damper on the screw rod, a sliding gasket is placed between the nut and the thin-layer weathering steel plate damper to ensure that there is sliding ability between the nut and the thin-layer weathering steel plate damper.

[0013] The design can realize staged energy dissipation when the old aqueduct internodes are under stress, taking into account daily sliding energy dissipation and buckling energy dissipation of the thin-layer weathering steel plate damper. The slight deformation caused by thermal expansion and contraction due to temperature changes or small earthquakes in daily life can be effectively dissipated by sliding the screws implanted on both sides of the internode in the oblong holes of the thin-layer weathering steel plate damper. When a larger deformation is generated by a larger earthquake, the elliptical hole in the middle of the thin-layer weathering steel plate damper can be stretched or compressed to achieve effective energy dissipation. When there is no deformation in the internodes of the daily aqueduct structure, the thin-layer weathering steel plate damper can increase the overall stiffness of the aqueduct structure and improve the integrity of the aqueduct structure. At the same time, when deformation occurs in the internodes of the aqueduct structure, it can also meet the corresponding energy dissipation requirements.

[0014] Preferably, in the method of optimizing the connection between the old aqueduct nodes in step one, when installing the thin-layer weather-resistant steel plate damper, only partial coverage is performed on the nodes between the old concrete aqueduct, and there is no need to fully cover the nodes between the old aqueduct. It is only necessary to meet the corresponding connection strength and energy consumption performance.

[0015] Preferably, in the method for optimizing the concrete wall of the old aqueduct in step 2, the insulation layer is provided by spraying, and the insulation layer is a polyurethane insulation material; in step 3, after the insulation layer on the surface of the concrete wall of the old aqueduct is sprayed, a non-toxic polyurethane waterproof material is sprayed on its surface as a waterproof layer to improve the waterproof and anti-seepage performance of the insulation layer and the aqueduct as a whole.

[0016] The polyurethane thermal insulation material and non-toxic polyurethane waterproof material are both safe and non-toxic materials that do not affect water quality, ensuring that while improving the performance of the aqueduct, they do not cause adverse effects on water quality, thereby ensuring water delivery safety.

[0017] As a further preference, the polyurethane thermal insulation material is LXC60 rigid foam polyurethane; and the non-toxic polyurethane waterproof material is FJS reactive waterproof coating.

[0018] In step one, the method for optimizing the inter-section connection of the old aqueduct should select the appropriate installation method according to the different positions of the aqueduct wall.

[0019] Preferably, the old aqueduct is a multi-section closed aqueduct, including an old aqueduct concrete trough wall, and the old aqueduct concrete trough wall of the closed aqueduct includes a bottom wall, a left wall, a right wall and a top wall, wherein for the top wall, a thin layer of weathering steel plate damper is installed on the outside of the top wall, and the bottom wall and the left and right walls are all installed with thin layer of weathering steel plate dampers from the inside; thermal insulation and waterproof layers are added to the inside and outside of the top wall, and the addition of thermal insulation and waterproof layers to the inside and outside has a significant effect on improving the later deformation performance and the overall performance of the trough wall. The thermal insulation and waterproof layers are only added to the bottom wall and the left and right walls of the concrete trough wall of the old aqueduct. The specific method of adding the thermal insulation and waterproof layers includes spraying polyurethane thermal insulation material and non-toxic polyurethane waterproof material on the surface of the concrete trough wall of the old aqueduct to form a thermal insulation and waterproof layer, which improves the thermal insulation and anti-seepage performance of the trough wall, is beneficial to construction, and maximizes the protection of the original appearance.

[0020] Preferably, the old aqueduct is a multi-section open aqueduct, including an old aqueduct concrete trough wall, and the old aqueduct concrete trough wall of the open aqueduct includes a bottom wall, a left wall and a right wall, wherein the bottom wall and the left and right walls are installed with a thin layer of weather-resistant steel plate damper from the inside and an additional thermal insulation and waterproof layer is added, and the specific method of adding the thermal insulation and waterproof layer includes spraying polyurethane thermal insulation material and non-toxic polyurethane waterproof material on the surface of the concrete trough wall of the old aqueduct to form a thermal insulation and waterproof layer, thereby improving the thermal insulation and anti-seepage performance of the trough wall, which is beneficial to construction and maximizes the protection of the original appearance.

[0021] The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of the internodes of an old aqueduct provided by the present invention has the following advantages:

[0022] (1) By installing thin-layer weathering steel plate dampers between old aqueducts, energy dissipation can be achieved in stages, taking into account both daily sliding energy dissipation and buckling energy dissipation of thin-layer weathering steel plate dampers, which can effectively cope with different degrees of stress deformation, thereby improving the seismic performance of the old aqueducts between nodes, and further improving the overall seismic performance of the old aqueduct structure;

[0023] (2) Appropriate methods can be used for the concrete wall of the old aqueduct according to different locations, such as adding a thermal insulation and waterproof layer both inside and outside the top wall, and adding a thermal insulation and waterproof layer only inside the bottom wall, left wall and right wall, which improves the overall thermal insulation performance of the old aqueduct and ensures normal water delivery in winter;

[0024] (3) Applying a waterproof layer on the surface of the insulation layer inside the concrete wall of the old aqueduct effectively improves the overall anti-seepage performance of the old aqueduct, reduces the problem of water leakage between nodes, reduces water resource waste, and can effectively improve water delivery efficiency and water supply guarantee capabilities;

[0025] (4) The installation of thin-layer weathering steel plate dampers and the spraying construction method of thermal insulation and waterproof materials are efficient and simple, which greatly simplifies the construction steps and reduces the complexity of on-site operations, making the entire construction process more efficient and ensuring construction quality;

[0026] (5) In the process of optimizing the inter-segment connection and concrete wall of the old aqueduct, the construction is convenient while the original appearance can be protected to the greatest extent. Various performance improvement measures can be completed without destroying the facade of the old aqueduct structure, which is of great significance for the old aqueduct with protection value;

[0027] (6) The insulation and waterproofing materials used are safe, non-toxic and do not affect water quality, ensuring that while improving the performance of the aqueduct, it does not cause adverse effects on water quality, thus ensuring the safety of water supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The overall structural diagram of the closed aqueduct in Example 1;

[0029] Figure 2 It is a cross-sectional view of the closed aqueduct in Example 1;

[0030] Figure 3 This is a schematic diagram of the closed aqueduct internode connection in Example 1;

[0031] Figure 4 The overall structural diagram of the open aqueduct in Example 2;

[0032] Figure 5 It is a cross-sectional view of the open aqueduct in Example 2;

[0033] Figure 6 This is a schematic diagram of the inter-node connection of the open aqueduct in Example 2;

[0034] Figure 7 It is a schematic diagram of a thin layer weathering steel plate damper;

[0035] Figure 8 This is a schematic diagram of the installation of thin weathering steel plate dampers at internode connections;

[0036] Fig. 9 for Figure 8 Enlarged view of point A in the middle;

[0037] Fig.10 This is a schematic diagram of the internal insulation layer and waterproof layer of the bottom wall in Example 1;

[0038] Fig.11 This is a schematic diagram of the internal insulation layer and waterproof layer of the left (right) wall in Example 1;

[0039] Fig.12 Schematic diagram of the internal and external insulation layers and waterproof layers of the top wall in Example 1;

[0040] Fig.13 This is a schematic diagram of the relationship between the thin weathering steel plate damper, insulation layer and waterproof layer at the internode connection;

[0041] Fig.14 This is a panoramic photo of the aqueduct after transformation in Example 1.

[0042] Among them, 1 is the concrete wall of the old aqueduct; 2 is the thermal insulation and waterproof layer; 2-1 is the thermal insulation layer; 2-2 is the waterproof layer; 3 is the flexible water-stop layer; 4 is the thin layer weather-resistant steel plate damper; 4-1 is an elliptical opening; 4-2 is a circular hole; 4-3 is an oblong hole; 5 is a screw; 6 is a nut; 7 is a sliding gasket. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described clearly and in detail in combination with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The old concrete aqueduct lacks effective connections between nodes, water leakage, and it is difficult to stably deliver water due to freezing in winter. In this regard, a method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of the old aqueduct nodes is proposed.

[0045] Example 1

[0046] A method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes, such as Figures 1 to 3 As shown, the old aqueduct is a multi-section closed aqueduct, including an old aqueduct concrete trough wall 1, and the old aqueduct concrete trough wall 1 includes a bottom wall, a left wall, a right wall and a top wall; screws 5 are implanted on both sides of each closed aqueduct internode, and a thin-layer weathering steel plate damper 4 is provided with a corresponding hole, and the screw 5 is penetrated by the thin-layer weathering steel plate damper 4, so that the thin-layer weathering steel plate damper 4 is installed on the inner side of the left wall, the right wall and the bottom wall of the old aqueduct concrete trough wall 1 and the outer side of the top wall, and a nut 6 is provided on the screw 5 on the other side of the thin-layer weathering steel plate damper 4 relative to the old aqueduct concrete trough wall 1 to fix the thin-layer weathering steel plate damper 4, so as to improve the internode seismic performance of the old aqueduct, thereby realizing the improvement of the overall seismic performance of the old aqueduct structure, as shown in FIG. Figure 8 and Fig. 9 As shown;

[0047] like Figure 10-12 As shown, a thermal insulation and waterproof layer 2 is arranged on the concrete wall 1 of the old aqueduct, and the thermal insulation and waterproof layer 2 includes a waterproof layer 2-2 and a thermal insulation layer 2-1 between the concrete wall 1 of the old aqueduct and the waterproof layer 2-2; Fig.13 As shown, the thermal insulation and waterproof layer 2 entirely covers the old aqueduct concrete wall 1, that is, the thermal insulation and waterproof layer 2 also covers the internodes of the aqueduct and the covering surface is flush with other parts.

[0048] A flexible waterproof layer 3 is provided between the nodes of the old aqueduct to improve the anti-seepage performance of the nodes of the old aqueduct without limiting its deformation performance.

[0049] A sliding gasket 7 is also provided between the thin-layer weathering steel plate damper 4 and the nut 6 .

[0050] like Figure 7As shown, the holes of the thin-layer weather-resistant steel plate damper 4 include an elliptical opening 4-1 in the middle, and the hollowing in the middle can weaken the rigidity of the steel plate to a certain extent, and the openings on both sides of the elliptical opening 4-1 are arranged in a plum blossom pile manner, one side of which is a circular hole 4-2 for easy installation, and the other side is an oblong hole 4-3, which not only plays a fixing role but also can rely on the screws 5 implanted on both sides of the internode to slide in the oblong hole 4-3 of the thin-layer weather-resistant steel plate damper 4 to effectively dissipate energy when there is slight deformation caused by thermal expansion and contraction or small earthquakes. Both sides of the thin-layer weather-resistant steel plate damper 4 are arc transitions, which can avoid stress concentration to the greatest extent and realize full energy dissipation of the damper.

[0051] The above design can realize staged energy consumption when the thin-layer weathering steel plate damper 4 is subjected to stress, taking into account daily sliding energy consumption and buckling energy consumption of the thin-layer weathering steel plate damper 4. The slight deformation caused by thermal expansion and contraction due to temperature changes or small earthquakes in daily life can rely on the screw 5 to slide in the oblong hole 4-3 of the thin-layer weathering steel plate damper 4 to effectively consume energy. When a larger deformation is generated by a larger earthquake, the elliptical hole 4-1 in the middle of the thin-layer weathering steel plate damper 4 can be stretched or compressed to realize energy consumption.

[0052] The thermal insulation and waterproof layer 2 is arranged on the bottom wall, left wall, right wall, inner side of the top wall, and outer side of the top wall of the old aqueduct concrete channel wall 1.

[0053] Optimize the old aqueduct concrete trough wall 1 and select appropriate improvement methods according to different positions. Add thermal insulation and waterproof layers 2 on the inside and outside of the top wall. Adding thermal insulation and waterproof layers 2 on the inside and outside has a significant effect on improving the later deformation performance and the overall performance of the trough wall. Only the thermal insulation and waterproof layers 2 are added to the bottom wall, left wall and right wall of the old aqueduct concrete trough wall 1. By treating the surface of the old aqueduct concrete trough wall 1 to ensure that the surface is clean and smooth, the overall thermal insulation and waterproof performance are improved.

[0054] The thin-layer weathering steel plate damper 4 does not need to fully cover the internode part of the old aqueduct, and only needs to meet the corresponding connection strength and energy consumption performance.

[0055] The appropriate optimization method is selected according to the different positions of the concrete channel wall 1 of the old aqueduct. For the top wall, the thin layer of weather-resistant steel plate damper 4 is installed on the outside of the top wall, and the bottom wall and the left and right walls are installed from the inside, which is conducive to construction and maximizes the protection of the original appearance.

[0056] Preferably, the thermal insulation layer 2-1, the waterproof layer 2-2 and the flexible water-stop layer 3 are provided by spraying, wherein the thermal insulation layer 2-1 is a polyurethane thermal insulation material, the waterproof layer 2-2 is a non-toxic polyurethane waterproof material, and the flexible water-stop layer 3 is a polyurethane thermal insulation material.

[0057] The polyurethane thermal insulation material is preferably LXC60 rigid foam polyurethane; the non-toxic polyurethane waterproof material is preferably FJS reactive waterproof coating.

[0058] By spraying polyurethane insulation materials, the water-stopping performance of the old aqueduct internodes can be optimized and a certain amount of expansion and contraction can be provided, which can meet both the deformation requirements and the anti-seepage requirements.

[0059] LXC60 rigid foam polyurethane and FJS reactive waterproof coating are both non-toxic, safe and water quality-insensitive materials. By using the above materials as the thermal insulation and waterproof layer 2, the improved aqueduct can improve the inter-node seismic performance and overall thermal insulation and anti-seepage performance of the original aqueduct structure without affecting the water quality.

[0060] The specific methods for transforming the old aqueduct into the above structure are as follows:

[0061] 1) Since the surface of the old aqueduct concrete box 1 is damaged and carbonized, it is necessary to remove the dirt and loose concrete on the inner wall surface of the old aqueduct concrete trough wall 1 to ensure that the construction surface is flat, and then appropriately roughen both sides of the original old aqueduct concrete trough wall 1 and wash the floating slurry;

[0062] 2) Spray polyurethane insulation material LXC60 rigid foam polyurethane between the old aqueduct nodes to form a flexible water stop layer 3 to improve the anti-seepage performance of the old aqueduct nodes;

[0063] 3) implanting the screw 5 into the old aqueduct concrete trough wall 1 after the surface treatment is clean and flat, the implantation position of the screw 5 coincides with the hole position of the thin-layer weathering steel plate damper 4, and after the screw 5 is implanted, the thin-layer weathering steel plate damper 4 is installed using the nut 6, and the thin-layer weathering steel plate damper 4 is installed on the outer side of the top wall, the inner side of the bottom wall and the inner sides of the left and right walls of the old aqueduct concrete trough wall 1, and a sliding gasket 7 is placed between the thin-layer weathering steel plate damper 4 and the nut 6 to ensure that the nut 6 and the thin-layer weathering steel plate damper 4 have sliding ability, so as to facilitate the thin-layer weathering steel plate damper 4 to effectively dissipate energy while improving the seismic performance of the old aqueduct internodes, thereby achieving the improvement of the overall seismic performance of the old aqueduct structure;

[0064] 4)Reference Figure 10-12 The bottom wall, left wall, right wall, inner side of the top wall, and outer side of the top wall of the old aqueduct concrete trough wall 1 are sprayed with polyurethane insulation material LXC60 rigid foam polyurethane and non-toxic polyurethane waterproof material FJS reactive waterproof coating in sequence to obtain a thermal insulation and waterproof layer 2, thereby improving the thermal insulation and anti-seepage performance of the aqueduct, and ensuring the water supply of the old aqueduct in winter;

[0065] Preferably, the thermal insulation and waterproof layer 2 is sprayed only on the outside of the top wall of the old aqueduct concrete trough wall 1, and the spraying shape should be consistent with the original appearance, so as to protect the original appearance of the old aqueduct to the greatest extent.

[0066] The above method is used to actually transform the old aqueduct. The transformed aqueduct is as follows: Fig.14 As shown, by setting a thin layer of weather-resistant steel plate damper 4 between the aqueduct nodes and setting a thermal insulation and waterproof layer 2 on the surface of the concrete channel wall 1 of the old aqueduct, after the old aqueduct is renovated, its seismic resistance and thermal insulation and anti-seepage performance are significantly improved, which can effectively improve the water delivery efficiency and water supply guarantee capacity.

[0067] Example 2

[0068] An old aqueduct with earthquake resistance and overall thermal insulation and anti-seepage properties, such as Figures 4 to 6 As shown, this embodiment is the same as Embodiment 1 as a whole, the difference is that the old aqueduct in this embodiment is a multi-section open aqueduct, and the old aqueduct concrete trough wall 1 does not include a top wall, only includes a left wall, a right wall and a bottom wall. Therefore, the thermal insulation and waterproof layer 2, the thin layer weathering steel plate damper 4 and other treatments described in Embodiment 1 are not performed on the top wall. The thermal insulation and waterproof layer 2 and the thin layer weathering steel plate damper 4 of this embodiment are only arranged on the inner side of the bottom wall, the left wall and the right wall. The other structures and the corresponding transformation methods are the same as those in Embodiment 1.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any equivalent substitutions, modifications, etc. made by technicians in this field without any creative work within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes, characterized in that: The following steps are involved: Step 1: Optimize the connection between the old aqueduct nodes, perform local treatment on the surface of the concrete wall of the old aqueduct, and then plant screws on both sides of the old aqueduct nodes. After the screws are planted, install the thin layer of weathering steel plate damper with nuts; Step 2: Optimize the concrete wall of the old aqueduct and add a thermal insulation layer on the surface of the concrete wall of the old aqueduct; Step 3: Apply a waterproof layer on the surface of the insulation layer of the concrete wall of the old aqueduct.

2. The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes according to claim 1, characterized in that: The method for optimizing the connection between the old aqueduct sections in the step one is: locally treat the original old aqueduct concrete trough wall, first perform moderate roughening treatment and rinse the floating slurry, wait until the surface of the old aqueduct concrete trough wall is clean and smooth, then implant screws on both sides of the old concrete aqueduct section, the position of the implanted screws coincides with the hole position of the thin layer weathering steel plate damper, and after the screws are implanted, the thin layer weathering steel plate damper is installed using nuts.

3. The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes according to claim 1, characterized in that: The method for optimizing the inter-node connection of the old aqueduct in the step 1 includes spraying polyurethane insulation material at the inter-node of the old aqueduct before screwing to form a flexible water-stopping layer.

4. The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes according to claim 1, characterized in that: In step one, the thin layer weathering steel plate damper has an elliptical opening in the middle, and the holes on both sides are arranged in a plum blossom pile manner, one side is a circular hole, and the other side is an oblong hole. Both sides of the thin layer weathering steel plate damper are arc transitions.

5. The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes according to claim 1 or 4, characterized in that: When installing the thin layer weather-resistant steel plate damper on the screw rod, place a sliding gasket between the nut and the thin layer weather-resistant steel plate damper.

6. The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes according to claim 5, characterized in that: Thin weathering steel plate dampers were installed to only partially cover the interstices of the old concrete aqueduct.

7. The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes according to claim 1, characterized in that: The insulation layer in step 2 is provided by spraying, and the insulation layer is a polyurethane insulation material; after the insulation layer on the surface of the concrete wall of the old aqueduct in step 3 is sprayed, a non-toxic polyurethane waterproof material is sprayed on its surface as a waterproof layer.

8. The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes according to claim 3 or 7, characterized in that: The polyurethane thermal insulation material is LXC60 rigid foam polyurethane; the non-toxic polyurethane waterproof material is FJS reactive waterproof coating.

9. The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes according to claim 1, characterized in that: The old aqueduct is a multi-section closed aqueduct, including an old aqueduct concrete trough wall, and the old aqueduct concrete trough wall includes a bottom wall, a left wall, a right wall and a top wall, wherein a thin layer of weathering steel plate damper is installed on the outside of the top wall for the top wall, and thin layer of weathering steel plate dampers are installed from the inside of the bottom wall and the left and right walls; a thermal insulation and waterproof layer is added to the inside and outside of the top wall, and a thermal insulation and waterproof layer is added only to the inside of the bottom wall and the left and right walls, and the specific method of adding the thermal insulation and waterproof layer is to spray polyurethane thermal insulation material and non-toxic polyurethane waterproof material on the surface of the old aqueduct concrete trough wall to form a thermal insulation and waterproof layer.

10. The method for improving the seismic resistance and overall thermal insulation and anti-seepage performance of old aqueduct internodes according to claim 1, characterized in that: The old aqueduct is a multi-section open aqueduct, including an old aqueduct concrete trough wall, the old aqueduct concrete trough wall includes a bottom wall, a left wall and a right wall, wherein the bottom wall and the left and right walls are installed with a thin layer of weathering steel plate damper and a thermal insulation layer from the inside, and the specific method of adding a thermal insulation and waterproof layer is to spray polyurethane thermal insulation material and non-toxic polyurethane waterproof material on the surface of the old aqueduct concrete trough wall to form a thermal insulation and waterproof layer.

Images