Novel anti-floating anchor rod waterproof joint treatment method

Abstract

The invention relates to the technical field of building construction, in particular to a novel anti-floating anchor rod waterproof joint treatment method which comprises the steps that an anti-floating anchor rod and peripheral inter-pile soil are cleaned, the end of the anchor rod is treated, pile heads are chiseled, and a waterproof base layer is obtained; determining whether the qualification of the waterproof base layer meets the requirement or not based on the flatness deviation ratio of the waterproof base layer at the end of the anchor rod; the base layer is subjected to concrete pouring, the surface of the base layer is coated with a cement-based capillary crystalline waterproof coating to obtain a waterproof groove, and an SBS coiled material reinforcing ring is arranged on the periphery of the waterproof groove; filling the waterproof groove with a non-cured rubber asphalt waterproof coating to obtain a waterproof filling layer; the filling compactness of the waterproof filling layer is obtained, and the brushing thickness of the waterproof additional layer is determined; the surfaces of the waterproof filling layer and the reinforcing ring are coated with asphalt waterproof paint to obtain a waterproof additional layer; and determining the temperature correction value of the hot melting edge of the SBS coiled material based on the deviation value of the lap width of the waterproof additional layer. The sealing impermeability of the waterproof joint at the end of the anti-floating anchor rod is improved.

Description

A novel method for waterproof joint treatment of anti-buoyancy anchor bolts Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a novel method for treating waterproof joints of anti-buoyancy anchors. Background Technology

[0002] In existing technologies, waterproof joints of anti-buoyancy anchors are a weak link in underground engineering waterproofing. Related treatment methods mostly employ rigid sealing or simple rigid-flexible combinations, which generally suffer from a lack of parameter quantification, unclear construction quality control standards, and insufficient compliance with joint deformation standards. Furthermore, existing methods do not fully consider joint deformation caused by anchor tension, structural settlement, and temperature changes. Rigid waterproofing structures are prone to stress cracking, forming seepage channels, resulting in poor durability of the waterproof joints and a high rate of subsequent leakage repairs, making it difficult to meet the application requirements of high waterproofing levels and long-term durability in underground engineering.

[0003] Chinese Patent Publication No. CN119021209A discloses a method and device for waterproofing the top node of an anti-buoyancy anchor. The method includes: sequentially constructing an anti-buoyancy anchor (1) and a raft foundation (2); pre-reserving a groove (11) around the end of the anti-buoyancy anchor (1); treating the surface of the groove (11) by spraying an alkaline or acidic cleaning agent using a waterproofing construction device (3); applying a cement-based penetrating crystalline waterproof coating layer (111) inside the groove (11); sequentially laying a waterproof mortar layer (112) and a polyester-modified bitumen waterproof membrane layer (113) on the raft foundation (2); and laying the polyester-modified bitumen waterproof membrane layer (113) into the groove (11); and using a hot-melt coating. The non-curing waterproof coating (114) fills and seals the groove (11); the waterproof construction device (3) includes a fixed frame (31), a cylinder (32), a movable frame (33), a spray pump (34) and a storage tank (35). The cylinder (32) is fixedly connected to the fixed frame (31) and can drive the movable frame (33) to move up and down. The movable frame (33) is provided with multiple spray heads (331). The storage tank (35) is used to store alkaline or acidic cleaning agents. The storage tank (35), the spray pump (34) and the multiple spray heads (331) are connected in sequence through pipes. When the spray pump (34) is started, it sprays alkaline or acidic cleaning agents into the groove (11) through the multiple spray heads (331). Therefore, it can be seen that the waterproofing treatment method and device for the top node of the anti-buoyancy anchor has the following problems: due to the lack of quantifiable judgment standards and correction mechanisms, poor adaptability to base layer defects, difficulty in precise quality control during construction, and easy failure of waterproof nodes, the sealing and seepage prevention of the waterproof nodes at the end of the anti-buoyancy anchor is insufficient. Summary of the Invention

[0004] Therefore, this invention provides a novel method for treating waterproof joints of anti-buoyancy anchors, which overcomes the problems in the prior art, such as the lack of quantifiable judgment standards and correction mechanisms, poor adaptability to base layer defects, difficulty in precise quality control during construction, and easy failure of waterproof joints, resulting in insufficient sealing and seepage prevention of the waterproof joints at the ends of the anti-buoyancy anchors.

[0005] To achieve the above objectives, this invention provides a novel method for treating waterproof joints of anti-buoyancy anchors, comprising: cleaning the soil between piles surrounding the anti-buoyancy anchor to be treated, and performing surface treatment on the end of the anti-buoyancy anchor to obtain an anti-buoyancy anchor; chiseling the pile head position of the anti-buoyancy anchor to obtain a waterproof base layer; obtaining the flatness deviation rate of the waterproof base layer at the end of the anti-buoyancy anchor, and determining whether the qualification of the waterproof base layer meets the requirements based on the flatness deviation rate of the waterproof base layer at the end of the anti-buoyancy anchor; pouring concrete into the base layer to obtain a concave arc cushion layer; applying a cement-based penetrating crystalline waterproof coating to the surface of the concave arc cushion layer to obtain a waterproof groove; and applying a waterproof coating to the periphery of the waterproof groove. An SBS membrane reinforcing ring is added; the waterproof groove is filled with non-curing rubber asphalt waterproof coating to obtain a waterproof filling layer; if the qualification of the waterproof base layer does not meet the requirements, the filling density of the waterproof filling layer is obtained to determine whether to reduce the coating thickness of the additional waterproof layer; non-curing rubber asphalt waterproof coating is applied to the surface of the waterproof filling layer and the SBS membrane reinforcing ring to obtain a waterproof additional layer; if the filling effectiveness of the additional waterproof layer does not meet the requirements, the SBS membrane hot-melt edge temperature correction value is determined based on the overlap width deviation of the additional waterproof layer; based on the adjusted SBS membrane hot-melt edge temperature correction value, the SBS membrane is laid over a large area and then a metal waterstop ring is welded.

[0006] Furthermore, determining whether the waterproof base layer meets the requirements based on the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor includes: comparing the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor with a preset deviation rate; if the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor is less than or equal to the preset deviation rate, it is determined that the waterproof base layer meets the requirements; if the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor is greater than the preset deviation rate, it is determined that the waterproof base layer does not meet the requirements.

[0007] Furthermore, if the waterproof base layer fails to meet the required standards, the filling effectiveness of the additional waterproof layer is determined based on the filling density of the waterproof filling layer.

[0008] Furthermore, determining whether the filling effectiveness of the additional waterproof layer meets the requirements based on the filling density of the waterproof filling layer includes: comparing the filling density of the waterproof filling layer with a preset second density; if the filling density of the waterproof filling layer is greater than or equal to the preset second density, determining that the filling effectiveness of the additional waterproof layer meets the requirements; if the filling density of the waterproof filling layer is less than the preset second density, determining that the filling effectiveness of the additional waterproof layer does not meet the requirements.

[0009] Further, determining whether it is necessary to reduce the coating thickness of the waterproof additional layer includes: comparing the filling density of the waterproof filler layer with a preset first density and a preset second density, respectively; if the filling density of the waterproof filler layer is greater than the preset first density and less than the preset second density, it is determined that the coating thickness of the waterproof additional layer needs to be reduced; if the filling density of the waterproof filler layer is less than or equal to the preset first density, it is determined that the coating thickness of the waterproof additional layer does not need to be reduced.

[0010] Furthermore, the reduction in the coating thickness of the additional waterproof layer is determined by the difference between the filling density of the waterproof filler layer and the preset first density.

[0011] Furthermore, based on the condition that the filling density of the waterproof filling layer is less than or equal to the preset first density, it is initially determined that the sealing performance of the waterproof system does not meet the requirements, and the sealing performance of the waterproof system is determined according to the deviation of the overlap width of the waterproof additional layer.

[0012] Furthermore, determining the SBS membrane hot-melt edge temperature correction value based on the overlap width deviation of the waterproofing supplementary layer includes: comparing the overlap width deviation of the waterproofing supplementary layer with a preset deviation value per unit time; if the overlap width deviation of the waterproofing supplementary layer is less than or equal to the preset deviation value, it is determined that the waterproofing system connection and sealing meets the requirements; if the overlap width deviation of the waterproofing supplementary layer is greater than the preset deviation value, it is determined that the waterproofing system connection and sealing does not meet the requirements, and the SBS membrane hot-melt edge temperature correction value is increased.

[0013] Furthermore, the overlap width deviation of the additional waterproof layer is the difference between the actual overlap width of the SBS modified bitumen waterproof membrane and the additional waterproof layer and the target overlap width.

[0014] Furthermore, the increase in the SBS roll material hot-melt edge temperature correction value is determined by the difference between the overlap width deviation of the waterproof additional layer and the preset deviation.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The method of the present invention judges the compliance of the waterproof base layer based on the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor rod. Due to incomplete cleaning of the soil between piles, residual laitance after pile head chiseling, or surface sanding and cracking after concrete cushion layer pouring, defects such as protrusions and cracks exist in the waterproof base layer. Directly constructing the waterproof layer on such a base layer can easily lead to uneven coating and hollow areas in the roll material, thus forming water seepage channels. By judging the compliance of the waterproof base layer, the location and severity of base layer defects can be identified, and pretreatment measures such as grinding and leveling can be taken to avoid poor waterproof bonding and local damage caused by substandard base layer. The coating thickness of the additional waterproof layer is adjusted according to the filling density of the waterproof filling layer. Due to the irregular forming of the groove at the end of the anti-buoyancy anchor rod and insufficient fluidity of the coating during grouting, gaps and air bubbles exist in the groove, making it impossible to achieve full-section sealing. Groundwater can easily seep in through the gaps. By reducing the coating thickness of the additional waterproof layer, it can be adapted to the actual groove. After the contour is formed, the coating is applied to fill the gaps in the groove and remove air bubbles, achieving a full-section seal of the groove and eliminating channels for groundwater infiltration. This also ensures the uniformity of the waterproofing layer thickness. The SBS membrane hot-melt edge temperature correction value is adjusted based on the overlap width deviation. Due to low ambient temperature and excessive SBS membrane thickness, the hot-melt edge preheating is insufficient, resulting in inadequate flexibility. During installation, stretching deformation easily occurs, causing the actual overlap width to be less than the design value. This leads to insufficient fusion and bonding between membrane layers in the overlap area, forming gaps that allow groundwater to easily seep in. Increasing the SBS membrane hot-melt edge temperature correction value improves the hot-melt temperature and fusion degree of the overlap edge, enhances the membrane edge flexibility, reduces stretching deformation during installation, and ensures tight bonding between membrane layers and between the membrane and the substrate. This eliminates waterproofing gaps at the joints and improves the sealing and seepage prevention of the waterproofing nodes at the ends of the anti-buoyancy anchors.

[0016] Furthermore, the method of the present invention determines the compliance of the waterproof base layer by setting a preset deviation rate. Due to incomplete cleaning of the soil between piles, residual laitance after pile head chiseling, or surface sanding and cracking after concrete cushion layer pouring, defects such as protrusions and cracks may occur in the waterproof base layer. Directly constructing the waterproof layer on such a base layer can easily lead to uneven coating and hollowing of the rolled material, thus forming water seepage channels. By determining the compliance of the waterproof base layer, the location and severity of base layer defects can be identified, and pretreatment measures such as grinding and leveling can be taken to avoid poor waterproof bonding and local damage caused by substandard base layer, thereby further improving the sealing and seepage prevention of the waterproof joint at the end of the anti-buoyancy anchor rod.

[0017] Furthermore, the method of the present invention adjusts the coating thickness of the waterproof additional layer by setting a preset first density and a preset second density. Due to the irregular molding of the groove at the end of the anti-buoyancy anchor rod and the insufficient fluidity of the coating during grouting, gaps and air bubbles exist in the groove, making it impossible to achieve full-section sealing. Groundwater can easily seep in through the gaps. By reducing the coating thickness of the waterproof additional layer, the coating can be applied to match the actual molding contour of the groove, allowing the waterproof coating to fill the gaps in the groove and expel air bubbles, achieving full-section sealing of the groove, eliminating the channels for groundwater infiltration, and ensuring the uniformity of the coating thickness of the waterproof additional layer, further improving the sealing and seepage prevention of the waterproof joint at the end of the anti-buoyancy anchor rod.

[0018] Furthermore, the method described in this invention adjusts the temperature correction value of the hot-melt edge of the SBS roll material by setting a preset deviation. Due to the low ambient temperature and the large thickness of the SBS roll material, the preheating of the hot-melt edge of the roll material is insufficient, resulting in insufficient flexibility. During installation, it is easy to cause tensile deformation due to pulling, making the actual overlap width smaller than the design value. This leads to the inability of the roll material layers in the overlap area to be tightly fused and bonded, forming gap-like waterproof breaks. Groundwater can easily seep in along these gaps. By increasing the temperature correction value of the hot-melt edge of the SBS roll material, the hot-melt temperature and fusion degree of the roll material overlap edge can be improved, enhancing the flexibility of the roll material edge and reducing tensile deformation during the installation process. At the same time, it ensures that the roll material is tightly fused and bonded to each other and to the base layer, eliminating waterproof breaks at the joint and further improving the sealing and seepage prevention of the waterproof joint at the end of the anti-buoyancy anchor rod. Attached Figure Description

[0019] Figure 1 is an overall flowchart of the novel anti-buoyancy anchor waterproof joint treatment method according to an embodiment of the present invention; Figure 2 is a logical flowchart of the process for determining whether the waterproof base layer meets the requirements in the novel anti-buoyancy anchor waterproof joint treatment method according to an embodiment of the present invention; Figure 3 is a logical flowchart of the process for determining the coating thickness of the waterproof additional layer in the novel anti-buoyancy anchor waterproof joint treatment method according to an embodiment of the present invention; Figure 4 is a logical flowchart of the process for determining the SBS roll material hot melt edge temperature correction value in the novel anti-buoyancy anchor waterproof joint treatment method according to an embodiment of the present invention; Figure 5 is a cross-sectional view of the shaping mold of the novel anti-buoyancy anchor waterproof joint treatment method according to an embodiment of the present invention; Figure 6 is a plan view of the shaping mold of the novel anti-buoyancy anchor waterproof joint treatment method according to an embodiment of the present invention; The reference numerals are as follows: 1-shaping mold, 2-center hole diameter. Detailed Implementation

[0020] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0022] Please refer to Figures 1, 5, and 6, which are respectively an overall flowchart, a cross-sectional view of the molding die, and a plan view of the molding die for the novel anti-buoyancy anchor waterproof joint treatment method of the present invention.

[0023] This invention discloses a novel method for treating waterproof joints of anti-buoyancy anchors, comprising: Step S1, cleaning the soil between piles surrounding the anti-buoyancy anchor to be treated, and performing surface treatment on the end of the anti-buoyancy anchor to obtain the anti-buoyancy anchor, and chiseling the pile head position of the anti-buoyancy anchor to obtain a waterproof base layer; Step S2, obtaining the flatness deviation rate of the waterproof base layer at the end of the anti-buoyancy anchor, and determining whether the qualification of the waterproof base layer meets the requirements based on the flatness deviation rate of the waterproof base layer at the end of the anti-buoyancy anchor; Step S3, performing concrete pouring treatment on the base layer to obtain a concave arc cushion layer, applying a cement-based penetrating crystalline waterproof coating to the surface of the concave arc cushion layer to obtain a waterproof groove, and adding an SBS roll material reinforcing ring around the periphery of the waterproof groove. Step S4: Fill the waterproof groove with non-curing rubber asphalt waterproof coating to obtain a waterproof filling layer; Step S5: If the qualification of the waterproof base layer does not meet the requirements, obtain the filling density of the waterproof filling layer to determine whether to reduce the coating thickness of the additional waterproof layer; Step S6: Apply non-curing rubber asphalt waterproof coating to the surface of the waterproof filling layer and the SBS membrane reinforcing ring to obtain a waterproof additional layer; Step S7: If the filling effectiveness of the additional waterproof layer does not meet the requirements, determine the SBS membrane hot-melt edge temperature correction value based on the overlap width deviation of the additional waterproof layer; Step S8: After laying the SBS membrane over a large area based on the adjusted SBS membrane hot-melt edge temperature correction value, weld a metal waterstop ring.

[0024] Specifically, the flatness deviation rate of the waterproof base layer at the end of the anti-buoyancy anchor bolt is the ratio of the maximum height difference measured on the surface of the waterproof base layer at the end of the anti-buoyancy anchor bolt to the target height.

[0025] Specifically, the flatness of the waterproof base layer at the end of the anti-buoyancy anchor rod is detected by a laser flatness measuring instrument. The obtained flatness of the waterproof base layer is combined with the target height to calculate the flatness deviation rate of the waterproof base layer.

[0026] Specifically, the process of pouring concrete to the base layer to obtain a concave arc cushion layer is as follows: pouring concrete to the base layer, and using a mold 1 to process the end of the anti-buoyancy anchor rod into a concave arc structure of 5cm, thus completing the construction of the concave arc cushion layer.

[0027] Specifically, the height of the shaping mold 1 is 5cm, the diameter is 15cm, and the diameter of the central hole 2 is 4cm.

[0028] Specifically, the filling density of the waterproof filler layer is the ratio of the actual volume of the non-cured rubber asphalt waterproof coating filled in the waterproof groove to the theoretically designed filling volume of the waterproof groove.

[0029] Specifically, the density of the waterproof filler layer is determined by a density tester.

[0030] Specifically, the coating thickness of the waterproofing supplementary layer is a parameter used to compensate for uneven coating thickness caused by the unevenness of the waterproofing base layer and the filler layer surface, to specifically reinforce sealing defects, and to quantitatively control the coating thickness of the supplementary layer.

[0031] Specifically, the process of applying a non-curing rubber asphalt waterproof coating to the surface of the waterproof filler layer and the SBS membrane reinforcing ring to obtain a waterproof additional layer involves applying a 2mm thick non-curing rubber asphalt waterproof coating to the entire surface of the waterproof filler layer and the SBS membrane reinforcing ring, and then forming the waterproof additional layer through the application process.

[0032] Specifically, the overlap width of the waterproof additional layer is obtained by machine vision measurement. The actual overlap width of the waterproof additional layer is combined with the designed overlap width to calculate the deviation of the overlap width of the waterproof additional layer.

[0033] Specifically, the SBS roll sheet hot melt edge temperature correction value is a temperature adjustment value used to compensate for lap seal defects and improve the fusion bonding density at the lap joint.

[0034] In practice, the method of this invention determines the compliance of the waterproof base layer based on the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor rod. Due to incomplete cleaning of the soil between piles, residual laitance after pile head chiseling, or surface sanding and cracking after concrete cushion layer pouring, defects such as protrusions and cracks exist in the waterproof base layer. Directly constructing the waterproof layer on such a base layer easily leads to uneven coating and hollow areas in the membrane installation, thus forming seepage channels. By determining the compliance of the waterproof base layer, the location and severity of base layer defects can be identified, and pretreatment measures such as grinding and leveling can be taken to avoid poor waterproof bonding and localized damage caused by substandard base layers. The coating thickness of the additional waterproof layer is adjusted according to the filling density of the waterproof filling layer. Due to irregular forming of the groove at the end of the anti-buoyancy anchor rod and insufficient fluidity of the coating during grouting, gaps and air bubbles exist in the groove, making it impossible to achieve full-section sealing. Groundwater can easily seep in through the gaps. By reducing the coating thickness of the additional waterproof layer, the coating can be adapted to the actual forming contour of the groove. Applying additional coating fills the gaps in the grooves with waterproofing material, expelling air bubbles and achieving a full-section seal. This eliminates channels for groundwater infiltration and ensures uniform thickness of the additional waterproofing layer. The SBS membrane hot-melt edge temperature correction value is adjusted based on the overlap width deviation. Due to low ambient temperature and excessive SBS membrane thickness, insufficient preheating of the hot-melt edge results in insufficient flexibility, making it prone to stretching deformation during installation. This causes the actual overlap width to be less than the design value, preventing tight fusion and bonding between membrane layers in the overlap area, creating gaps that allow groundwater to easily seep in. Increasing the SBS membrane hot-melt edge temperature correction value improves the hot-melt temperature and fusion degree of the overlap edge, enhances edge flexibility, reduces stretching deformation during installation, and ensures tight bonding between membrane layers and between the membrane and the substrate. This eliminates waterproofing gaps at the joints and improves the sealing and seepage prevention of the waterproofing nodes at the ends of the anti-buoyancy anchors.

[0035] Please refer to Figure 2, which is a flowchart of the process for determining whether the waterproof base layer meets the requirements of the novel anti-buoyancy anchor waterproof joint treatment method according to an embodiment of the present invention.

[0036] Specifically, determining whether the waterproof base layer meets the requirements based on the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor includes: comparing the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor with a preset deviation rate; if the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor is less than or equal to the preset deviation rate, it is determined that the waterproof base layer meets the requirements; if the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor is greater than the preset deviation rate, it is determined that the waterproof base layer does not meet the requirements.

[0037] Understandably, in the new anti-buoyancy anchor waterproof joint treatment method, the core logic of using a preset deviation rate to characterize the compliance of the waterproof substrate is to quantify the compliance of the waterproof substrate into a precisely measurable numerical indicator. By comparing the flatness deviation rate of the substrate at the end of the anti-buoyancy anchor with the preset deviation rate, a scientific judgment can be made on the construction quality of the waterproof substrate and its compatibility with subsequent waterproofing procedures. When the flatness deviation rate of the substrate at the end of the anti-buoyancy anchor is less than or equal to the preset threshold, it indicates that the substrate surface is flat and solid, ensuring that the subsequent water-swellable sealing adhesive is tightly filled, the cement-based penetrating crystalline waterproof reinforcement layer is evenly applied, and the flexible waterproof wrapping is seamlessly attached. The compliance of the waterproof substrate meets the construction requirements of the anti-buoyancy anchor waterproof joint. When the flatness deviation rate of the substrate at the end of the anti-buoyancy anchor is greater than the preset threshold, it indicates that the substrate surface is uneven, which will lead to a loose bond between the waterproof structure and the substrate, easily forming seepage channels in the gaps. Subsequent waterproofing construction cannot achieve the designed sealing effect, and the compliance of the waterproof substrate does not meet the requirements, requiring secondary repair of the substrate. The preset deviation rate can be set according to the actual working conditions. The preset deviation rate is set to ensure the sealing and seepage prevention of the waterproof joint at the end of the anti-buoyancy anchor bolt, as well as its practicality. Optionally, the preset deviation rate is determined through a limited number of tests by evaluating the sealing and seepage prevention effect of different flatness deviations on the waterproof joint at the end of the anti-buoyancy anchor bolt. The determined preset deviation rate should be neither too small nor too large to cause excessive interference to the sealing process of the waterproof joint at the end of the anti-buoyancy anchor bolt. For example, the preset deviation rate is generally selected in the range of [2%, 5%].

[0038] Preferably, the preset deviation rate is 3% in this preferred embodiment.

[0039] In practice, the method described in this invention determines the compliance of the waterproof substrate by setting a preset deviation rate. Due to incomplete cleaning of the soil between piles, residual laitance after pile head chiseling, or surface sanding and cracking after concrete cushion layer pouring, defects such as protrusions and cracks may occur in the waterproof substrate. Directly constructing the waterproof layer on such a substrate can easily lead to uneven coating and hollow areas in the roll material, thus forming water seepage channels. By determining the compliance of the waterproof substrate, the location and severity of substrate defects can be identified, and pretreatment measures such as grinding and leveling can be taken to avoid poor waterproof bonding and local damage caused by substandard substrate, further improving the sealing and seepage prevention of the waterproof joint at the end of the anti-buoyancy anchor rod.

[0040] Please refer to Figure 3, which is a logic flowchart of the process of determining the coating thickness of the waterproof additional layer in the novel anti-buoyancy anchor waterproof joint treatment method of this invention.

[0041] Specifically, if the waterproof base layer fails to meet the requirements, the filling effectiveness of the additional waterproof layer is determined based on the filling density of the waterproof filling layer.

[0042] Specifically, determining whether the filling effectiveness of the waterproof additional layer meets the requirements based on the filling density of the waterproof filling layer includes: comparing the filling density of the waterproof filling layer with a preset second density; if the filling density of the waterproof filling layer is greater than or equal to the preset second density, determining that the filling effectiveness of the waterproof additional layer meets the requirements; if the filling density of the waterproof filling layer is less than the preset second density, determining that the filling effectiveness of the waterproof additional layer does not meet the requirements.

[0043] Specifically, when the filling density of the waterproof filling layer is greater than or equal to the preset second density, it is determined that the filling effectiveness of the additional waterproof layer meets the requirements, whereas the previously determined compliance of the waterproof base layer does not meet the requirements.

[0044] Specifically, determining whether the thickness of the waterproof additional layer needs to be reduced includes: comparing the filling density of the waterproof filler layer with a preset first density and a preset second density, respectively; if the filling density of the waterproof filler layer is greater than the preset first density and less than the preset second density, it is determined that the thickness of the waterproof additional layer needs to be reduced; if the filling density of the waterproof filler layer is less than or equal to the preset first density, it is determined that the thickness of the waterproof additional layer does not need to be reduced.

[0045] Understandably, the preset first density is less than the preset second density. The three intervals divided by the preset first and second density correspond to three different situations: The first interval is when the filling density of the waterproof filler layer is less than or equal to the preset first density. This corresponds to the following situation: Due to the low ambient temperature, the excessive thickness of the SBS membrane, and insufficient preheating of the membrane's hot-melt edge, the membrane lacks flexibility and is prone to stretching deformation during installation. This results in the actual overlap width being less than the design value, causing the membrane layers in the overlap area to fail to fuse tightly, forming gap-like waterproof breaks. Groundwater can easily seep in along these gaps. At this point, it is necessary to further determine whether the sealing performance of the waterproofing system meets the requirements; the second interval is when the filling density of the waterproofing filler layer is greater than the preset first density but less than the preset second density. The corresponding situation is: due to the irregular molding of the groove at the end of the anti-buoyancy anchor rod and insufficient fluidity of the coating during grouting, there are gaps and air bubbles in the groove, which cannot achieve full-section sealing. Groundwater can easily seep in through the gaps. At this time, it is necessary to adjust the coating thickness of the additional waterproofing layer; the third interval is when the filling density of the waterproofing filler layer is greater than or equal to the preset second density. The corresponding situation is: the filling effectiveness of the additional waterproofing layer is confirmed to meet the requirements.

[0046] Understandably, in the new method for treating waterproof joints of anti-buoyancy anchors, the introduction of preset first and second density values ​​to characterize the filling quality of the waterproof filling layer is based on the core logic of converting filling effectiveness into a quantifiable density value range. The preset first density value serves as the boundary between assessing the sealing performance of the waterproof system connection and adjusting the coating thickness of the additional waterproof layer. The preset second density value serves as the critical point between determining the need to adjust the coating thickness of the additional waterproof layer and confirming the filling effectiveness of the additional waterproof layer. This provides a quantitative basis for targeted solutions to groove sealing defects and reinforcement of the waterproof system. The preset first and second density values ​​can be set according to actual working conditions. The setting of the preset first and second density values ​​aims to ensure the sealing and seepage prevention performance and practicality of the waterproof joint at the end of the anti-buoyancy anchor. Optionally, the preset first density and preset second density are determined through a limited number of tests by evaluating the sealing and seepage prevention effects of different filling densities on the waterproof joint at the end of the floating anchor bolt. The determined preset first density and preset second density should be such that they are neither too small nor cause excessive interference to the sealing process of the waterproof joint at the end of the floating anchor bolt. For example, the preset first density is generally selected in the range of [85%, 89%], and the preset second density is generally selected in the range of [95%, 99%].

[0047] Preferably, the first density is 87% in the preferred embodiment, and the second density is 98% in the preferred embodiment.

[0048] Specifically, the reduction in the thickness of the waterproof additional layer is determined by the difference between the filling density of the waterproof filler layer and the preset first density.

[0049] Specifically, when the difference between the filling density of the waterproof filler layer and the preset first density is within 5%, the coating thickness of the additional waterproof layer is reduced to 0.95 times the original. When the difference between the filling density of the waterproof filler layer and the preset first density exceeds 5%, the coating thickness of the additional waterproof layer is reduced by 0.01 mm for every 1% increase beyond the original 0.95 times. For example, when the difference between the filling density of the waterproof filler layer and the preset first density is 7%, and the current coating thickness of the additional waterproof layer is 0.3 mm, the reduced coating thickness of the additional waterproof layer is 0.3 × 0.95 - 0.01 × 2 = 0.265 mm.

[0050] In practice, the method of the present invention adjusts the coating thickness of the waterproof additional layer by setting a preset first density and a preset second density. Due to the irregular forming of the groove at the end of the anti-buoyancy anchor rod and the insufficient fluidity of the coating during grouting, gaps and air bubbles exist in the groove, making it impossible to achieve full-section sealing. Groundwater can easily seep in through the gaps. By reducing the coating thickness of the waterproof additional layer, the coating can be applied to match the actual forming contour of the groove, allowing the waterproof coating to fill the gaps in the groove and expel air bubbles, achieving full-section sealing of the groove, eliminating the channels for groundwater infiltration, and ensuring the uniformity of the coating thickness of the waterproof additional layer, further improving the sealing and seepage prevention of the waterproof joint at the end of the anti-buoyancy anchor rod.

[0051] Please refer to Figure 4, which is a logic flowchart of the process of determining the SBS roll hot-melt edge temperature correction value in the novel anti-buoyancy anchor waterproof joint treatment method of the present invention.

[0052] Specifically, based on the condition that the filling density of the waterproof filling layer is less than or equal to the preset first density, it is initially determined that the sealing performance of the waterproof system does not meet the requirements, and the sealing performance of the waterproof system is determined according to the deviation of the overlap width of the waterproof additional layer.

[0053] Specifically, determining the SBS membrane hot-melt edge temperature correction value based on the overlap width deviation of the waterproofing supplementary layer includes: comparing the overlap width deviation of the waterproofing supplementary layer with a preset deviation value per unit time; if the overlap width deviation of the waterproofing supplementary layer is less than or equal to the preset deviation value, it is determined that the waterproofing system's connection and sealing performance meets the requirements; if the overlap width deviation of the waterproofing supplementary layer is greater than the preset deviation value, it is determined that the waterproofing system's connection and sealing performance does not meet the requirements, and the SBS membrane hot-melt edge temperature correction value is increased.

[0054] Understandably, the two intervals of the preset deviation amount correspond to two different situations: The first interval is when the deviation of the overlap width of the waterproof additional layer is less than or equal to the preset deviation amount, which means that the sealing performance of the waterproof system meets the requirements. In this case, it is necessary to further determine whether the coating thickness of the waterproof additional layer meets the requirements. The second interval is when the deviation of the overlap width of the waterproof additional layer is greater than the preset deviation amount, which means that due to the low ambient temperature, the excessive thickness of the SBS membrane, and insufficient preheating of the membrane's hot-melt edge, the membrane lacks flexibility and is prone to stretching deformation during installation. This results in the actual overlap width being less than the design value, causing the membrane layers in the overlap area to fail to fuse tightly and bond, forming gap-like waterproof breaks. Groundwater can easily seep in along these gaps, and in this case, it is necessary to increase the temperature correction value of the SBS membrane's hot-melt edge.

[0055] Understandably, in the new anti-buoyancy anchor waterproof joint treatment method, the preset deviation is used to characterize the sealing performance of the waterproof system connection. The core logic is to transform the sealing performance of the waterproof system connection into a quantifiable and comparable assessment of overlap reliability. By comparing the overlap width deviation of the additional waterproof layer per unit time with the preset deviation, the degree to which the current SBS membrane overlap construction ensures a closed-loop seal at the waterproof joint is determined, providing support for the overall waterproof effect and durability of the subsequent waterproof system. The overlap width of the waterproof layer is a core indicator of the sealing performance of the waterproof system connection. Excessive overlap deviation can easily lead to weak adhesion at the overlap, resulting in gaps and seepage channels. This is especially true for the anti-buoyancy anchor joint area, which is a weak point in waterproofing, and the quality of the overlap connection directly determines the success or failure of the joint waterproofing. The preset deviation can be set according to actual working conditions. The setting of the preset deviation aims to ensure the sealing and seepage prevention of the waterproof joint at the end of the anti-buoyancy anchor and its practicality. Optionally, the preset deviation is determined through a limited number of tests by evaluating the sealing and seepage prevention effect of different overlap width deviations on the waterproof joint at the end of the floating anchor rod. The determined preset deviation should be neither too small nor too large to cause excessive interference to the sealing process of the waterproof joint at the end of the floating anchor rod. For example, the preset deviation is generally selected in the range of [3mm, 7mm].

[0056] Preferably, the preset deviation amount is 5 mm in the preferred embodiment.

[0057] Specifically, the overlap width deviation of the additional waterproof layer is the difference between the actual overlap width of the SBS modified bitumen waterproof membrane and the waterproof layer and the designed overlap width.

[0058] Specifically, the overlap width deviation of the additional waterproof layer is the difference between the actual overlap width of the SBS modified bitumen waterproof membrane and the additional waterproof layer and the target overlap width.

[0059] Specifically, when the difference between the overlap width deviation of the waterproof additional layer and the preset deviation is within 3mm, the SBS membrane hot-melt edge temperature correction value is increased to 1.05 times the original value. When the difference between the overlap width deviation of the waterproof additional layer and the preset deviation exceeds 3mm, in addition to increasing to 1.05 times the original value, the SBS membrane hot-melt edge temperature correction value increases by 2℃ for every 1mm exceeding the original value. For example, when the difference between the overlap width deviation of the waterproof additional layer and the preset deviation is 4mm, the current SBS membrane hot-melt edge temperature correction value is 5℃, and the increased SBS membrane hot-melt edge temperature correction value is 5×1.05+2×1=7.25℃.

[0060] In practice, the method described in this invention adjusts the temperature correction value of the hot-melt edge of the SBS membrane by setting a preset deviation. Due to the low ambient temperature and the large thickness of the SBS membrane, the preheating of the hot-melt edge of the membrane is insufficient, resulting in insufficient flexibility. During installation, it is prone to tensile deformation due to pulling, causing the actual overlap width to be smaller than the design value. This leads to the inability of the membrane layers in the overlap area to be tightly fused and bonded, forming gap-like waterproof breaks. Groundwater can easily seep in along these gaps. By increasing the temperature correction value of the hot-melt edge of the SBS membrane, the hot-melt temperature and fusion degree of the membrane overlap edge can be improved, enhancing the flexibility of the membrane edge and reducing tensile deformation during installation. At the same time, it ensures a tight fusion bond between membranes and between the membrane and the substrate, eliminating waterproof breaks at the joints and further improving the sealing and seepage prevention of the waterproof joint at the end of the anti-buoyancy anchor.

[0061] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A novel method for treating waterproof joints of anti-buoyancy anchor bolts, characterized in that, include: Clean the soil between the piles surrounding the anti-buoyancy anchor to be treated, and perform surface treatment on the end of the anti-buoyancy anchor to obtain the anti-buoyancy anchor. Chisel the pile head position of the anti-buoyancy anchor to obtain the waterproof base layer. Obtain the flatness deviation rate of the waterproof base layer at the end of the anti-buoyancy anchor, and determine whether the qualification of the waterproof base layer meets the requirements based on the flatness deviation rate of the waterproof base layer at the end of the anti-buoyancy anchor. The base layer is treated with concrete pouring to obtain a concave arc cushion layer. A cement-based penetrating crystalline waterproof coating is applied to the surface of the concave arc cushion layer to obtain a waterproof groove. An SBS membrane reinforcing ring is added around the periphery of the waterproof groove. The waterproof groove is filled with a non-curing rubber asphalt waterproof coating to obtain a waterproof filling layer. If the waterproof base layer does not meet the requirements, the filling density of the waterproof filling layer is measured to determine whether to reduce the coating thickness of the additional waterproof layer. A non-curing rubber asphalt waterproof coating is applied to the surfaces of the waterproof filling layer and the SBS membrane reinforcing ring to obtain an additional waterproof layer. If the filling effectiveness of the additional waterproof layer does not meet the requirements, a correction value for the SBS membrane hot-melt edge temperature is determined based on the overlap width deviation of the additional waterproof layer. Based on the adjusted SBS membrane hot-melt edge temperature correction value, the SBS membrane is laid over a large area, and then a metal waterstop ring is welded.

2. The novel anti-buoyancy anchor waterproof joint treatment method according to claim 1, characterized in that, Determining whether the waterproof base layer meets the requirements based on the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor includes: comparing the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor with a preset deviation rate; if the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor is less than or equal to the preset deviation rate, it is determined that the waterproof base layer meets the requirements; if the flatness deviation rate of the base layer at the end of the anti-buoyancy anchor is greater than the preset deviation rate, it is determined that the waterproof base layer does not meet the requirements.

3. The novel anti-buoyancy anchor waterproof joint treatment method according to claim 2, characterized in that, If the waterproof base layer fails to meet the required standards, the effectiveness of the waterproof additional layer is determined based on the density of the waterproof filling layer.

4. The novel anti-buoyancy anchor waterproof joint treatment method according to claim 3, characterized in that, Determining whether the filling effectiveness of the waterproof supplementary layer meets the requirements based on the filling density of the waterproof filler layer includes: comparing the filling density of the waterproof filler layer with a preset second density; if the filling density of the waterproof filler layer is greater than or equal to the preset second density, it is determined that the filling effectiveness of the waterproof supplementary layer meets the requirements; if the filling density of the waterproof filler layer is less than the preset second density, it is determined that the filling effectiveness of the waterproof supplementary layer does not meet the requirements.

5. The novel anti-buoyancy anchor waterproof joint treatment method according to claim 4, characterized in that, Determining whether the thickness of the waterproof additional layer needs to be reduced includes: comparing the filling density of the waterproof filler layer with a preset first density and a preset second density, respectively; if the filling density of the waterproof filler layer is greater than the preset first density and less than the preset second density, it is determined that the thickness of the waterproof additional layer needs to be reduced; if the filling density of the waterproof filler layer is less than or equal to the preset first density, it is determined that the thickness of the waterproof additional layer does not need to be reduced.

6. The novel anti-buoyancy anchor waterproof joint treatment method according to claim 5, characterized in that, The reduction in the thickness of the waterproof additional layer is determined by the difference between the filling density of the waterproof filler layer and the preset first density.

7. The novel anti-buoyancy anchor waterproof joint treatment method according to claim 6, characterized in that, Based on the condition that the filling density of the waterproof filling layer is less than or equal to the preset first density, it is initially determined that the connection and sealing performance of the waterproof system does not meet the requirements, and the connection and sealing performance of the waterproof system is determined according to the deviation of the overlap width of the additional waterproof layer.

8. The novel anti-buoyancy anchor waterproof joint treatment method according to claim 7, characterized in that, Determining the SBS membrane hot-melt edge temperature correction value based on the overlap width deviation of the waterproofing supplementary layer includes: comparing the overlap width deviation of the waterproofing supplementary layer with a preset deviation value per unit time; if the overlap width deviation of the waterproofing supplementary layer is less than or equal to the preset deviation value, it is determined that the waterproofing system connection and sealing meets the requirements; if the overlap width deviation of the waterproofing supplementary layer is greater than the preset deviation value, it is determined that the waterproofing system connection and sealing does not meet the requirements, and the SBS membrane hot-melt edge temperature correction value is increased.

9. The novel anti-buoyancy anchor waterproof joint treatment method according to claim 8, characterized in that, The deviation of the overlap width of the waterproofing supplementary layer is the difference between the actual overlap width of the SBS modified bitumen waterproofing membrane and the waterproofing supplementary layer and the target overlap width.

10. The novel anti-buoyancy anchor waterproof joint treatment method according to claim 9, characterized in that, The increase in the SBS roll material hot melt edge temperature correction value is determined by the difference between the overlap width deviation of the waterproof additional layer and the preset deviation.

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