Raft foundation vibration isolation gap waterproof and drainage device and construction method thereof

Abstract

The invention discloses a raft foundation vibration isolation seam waterproof and drainage device and a construction method thereof, and belongs to the technical field of building waterproof construction. A raft foundation vibration isolation seam waterproof and drainage device is characterized in that a first waterproof roll layer is arranged on the lower end face of a first raft and the lower end face of a second raft, a concrete advanced water stop belt is arranged on the lower end face of the first waterproof roll layer, a second waterproof roll layer is arranged on the lower end face of the concrete advanced water stop belt, and a water retaining piece is embedded in an extruded polystyrene board; a first water collecting well and a second water collecting well are respectively arranged on the first raft plate and the second raft plate; according to the device, a multi-layer waterproof structure is designed and comprises the first waterproof coiled material layer, the second waterproof coiled material layer and the concrete advanced water stop belt, multiple waterproof barriers are formed, the reliability and durability of the waterproof layer are greatly improved through the multi-layer and composite waterproof design, meanwhile, through cooperation of the water retaining part, the water collecting well and the drainage part, the water retaining part, the water collecting well and the drainage part are effectively protected, and the service life of the device is prolonged. Multiple protection of the waterproof layer and efficient operation of the drainage system are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of building waterproof construction, and in particular relates to a raft foundation vibration isolation joint anti-drainage device and a construction method thereof. Background Art

[0002] In the field of construction engineering, raft foundation, as an important structural form, is widely used in the foundation treatment of various large buildings. However, in specific building environments, such as buildings with micro-vibration protection requirements and waterless building environments, traditional raft foundation construction methods are often difficult to meet their comprehensive performance requirements, especially when dealing with vibration isolation joints between raft slabs, it is necessary to consider the vibration isolation effect and ensure complete water isolation, which puts extremely high demands on construction technology.

[0003] At present, for raft foundations with micro-vibration protection requirements, the common practice is to only install aluminum alloy covers and a waterstop at the vibration isolation joints. Although the aluminum alloy covers can ensure that water from the upper part cannot flow to the lower part to a certain extent and meet the micro-load-bearing requirements, their waterproof performance is limited; at the same time, the design of a waterstop often cannot guarantee normal use within the service life of the building. Once the waterstop is damaged or broken, the water at the bottom of the raft may penetrate into the upper part of the raft through the vibration isolation joints, thereby failing to meet the needs of a waterless building environment. What is more serious is that once the waterstop is damaged or broken, due to the particularity of its location, repair work will be extremely difficult or even almost impossible. Summary of the invention

[0004] The purpose of the present invention is to provide a raft foundation vibration isolation joint anti-drainage device and a construction method thereof in view of the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the invention adopts the following technical scheme: a raft foundation vibration isolation joint anti-drainage device, comprising a first raft and a second raft, and a vibration isolation joint arranged between the first raft and the second raft, characterized in that the lower end surfaces of the first raft and the second raft are provided with a first waterproof roll material layer, the lower end surface of the first waterproof roll material is provided with a concrete advance water stop strip, the lower end surface of the concrete advance water stop strip is provided with a second waterproof roll material layer, the lower end surface of the second waterproof roll material layer is provided with a concrete cushion layer, and the lower end surface of the concrete cushion layer is provided with a rammed earth layer; The upper end surface of the first waterproof membrane layer is provided with a foam rod located in the vibration isolation joint, an extruded polystyrene board is provided in the vibration isolation joint, the upper end surface of the extruded polystyrene board is provided with a waterproof coating, a water retaining member is embedded in the extruded polystyrene board, and a waterstop located inside the vibration isolation joint is pre-buried on the inner sides of the first raft slab and the second raft slab; a first water collection well and a second water collection well are respectively provided on the first raft slab and the second raft slab, a connecting pipe is provided between the first water collection well, the second water collection well and the water retaining member, and drainage members are respectively installed in the first water collection well and the second water collection well.

[0006] By adopting the above technical scheme, the raft foundation vibration isolation joint drainage device effectively improves the waterproof performance and stability of the foundation structure through the design of multiple waterproof barriers, efficient drainage system, structural stability and durability, construction convenience and maintainability, and environmental adaptability, providing a strong guarantee for the long-term safe use of the building.

[0007] Optionally, the first waterproof membrane layer has a three-layer structure, which includes, from top to bottom, a first reverse-adhesive modified asphalt waterproof membrane, a modified asphalt waterproof membrane and an elastic modified asphalt waterproof membrane. The thickness of the first reverse-adhesive modified asphalt waterproof membrane, the modified asphalt waterproof membrane and the elastic modified asphalt waterproof membrane are all 4 mm.

[0008] By adopting the above technical solutions, this multi-layer design provides an additional waterproof barrier, enhances the durability and reliability of the waterproof layer, and waterproof membranes of different materials cooperate with each other to meet the waterproofing needs under various complex environmental conditions and effectively prevent moisture from penetrating into the raft foundation structure.

[0009] Optionally, the cross-section of the concrete advance waterstop is trapezoidal, and the upper end surface of the concrete advance waterstop is larger than the lower end surface, the upper end surface of the concrete advance waterstop is provided with an arc-shaped groove, and the thickness of the concrete advance waterstop is 200mm-300mm.

[0010] By adopting the above technical solution, the arc-shaped groove design further enhances the waterproof effect and reduces the direct impact of water flow on the waterstop. The thickness of 200mm-300mm ensures the structural strength of the waterstop, enabling it to withstand a certain amount of water pressure and deformation, and maintain the long-term effectiveness of the waterproof function.

[0011] Optionally, the second waterproof membrane layer is a two-layer structure, which includes, from top to bottom, a second anti-adhesive modified asphalt waterproof membrane and an anti-adhesive elastic modified asphalt waterproof membrane. The width of the anti-adhesive elastic modified asphalt waterproof membrane is 2m, and the thickness of the second anti-adhesive modified asphalt waterproof membrane and the anti-adhesive elastic modified asphalt waterproof membrane is 4mm.

[0012] By adopting the above technical solution, a two-layer structure consisting of a second anti-adhesive modified asphalt waterproof membrane and an anti-adhesive elastic modified asphalt waterproof membrane provides an additional waterproof layer and enhances the overall waterproof performance. The 4mm thickness and 2m width of each layer ensure the coverage and waterproof effect of the membrane. The anti-adhesive properties enable the membrane to better bond with the base layer and reduce the possibility of moisture penetration.

[0013] Optionally, a reserved groove for installing the concrete advance waterstop is provided on the concrete cushion layer, and the thickness of the concrete cushion layer is 90mm-110mm.

[0014] By adopting the above technical solution, the design of the reserved groove ensures the precise positioning and installation of the waterstop. This design simplifies the construction process and improves construction efficiency. At the same time, it ensures the close bonding between the concrete advance waterstop and the concrete cushion layer, thereby enhancing the waterproof effect.

[0015] Optionally, the foam rod is of a closed type, the diameter of the foam rod is 100 mm-200 mm, and the diameter of the foam rod is the same as the width of the vibration isolation gap.

[0016] By adopting the above technical solution, the closed-end foam rod has excellent elasticity and recovery, can adapt to the slight deformation of the vibration isolation joint, and effectively prevent the penetration of moisture and impurities. The diameter of the foam rod is the same as the width of the vibration isolation joint, ensuring a tight filling effect and improving the waterproof performance of the vibration isolation joint.

[0017] Optionally, the water retaining member comprises a pair of water retaining groove plates installed in the vibration isolation slot and facing oppositely, the water retaining groove plates are concave, and the side walls on both sides of the water retaining groove plates are bonded to the inner side walls of the vibration isolation slot.

[0018] By adopting the above technical solution, the water retaining trough is designed to be concave, and its side walls are tightly bonded to the inner wall of the vibration isolation joint, forming an effective water flow barrier. This design can prevent the water flow on the upper part of the vibration isolation joint from penetrating to the lower part, and also prevent the water flow on the lower part from flowing back to the upper part, thereby maintaining a dry environment inside the vibration isolation joint.

[0019] Optionally, the water retaining member includes a drain pipe installed in the vibration isolation joint, the outer circumference of the drain pipe is provided with 4 holes every 200mm-400mm, the diameter of some holes is 25mm-30mm, the outer circumference of the drain pipe is wrapped with polyester non-woven fabric, and a buffer seat is installed between the outer circumference of the drain pipe and the inner wall of the vibration isolation joint.

[0020] By adopting the above technical solution and the design of the drain pipe, moisture can be quickly collected and discharged through the connecting pipe, which greatly improves the drainage efficiency. At the same time, the polyester non-woven fabric wrapping also enhances the durability of the drain pipe and extends its service life.

[0021] Optionally, the drainage component includes a submersible pump installed in the first water collection well and the second water collection well, and drainage ends of several of the submersible pumps are respectively connected to drainage pipes extending to the outside of the first water collection well and the second water collection well.

[0022] By adopting the above technical solution, the submersible pumps installed in the first collection well and the second collection well can discharge the accumulated water in time through the drainage pipe, effectively preventing the accumulation and penetration of water in the foundation structure. This active drainage method improves the efficiency and reliability of the waterproofing system and ensures the stability and durability of the foundation structure.

[0023] Optionally, a construction method of a raft foundation vibration isolation joint anti-drainage device comprises the following steps:

[0024] The rammed earth layer is compacted and grooved according to the construction drawings, and the concrete pad is laid on the rammed earth layer. The rammed earth layer is compacted and grooved according to the construction drawings, and the concrete pad is laid on the rammed earth layer. The thickness of the concrete pad is controlled between 90mm and 110mm, and a reserved groove for the installation of the concrete advance water stop is reserved on the concrete pad;

[0025] Firstly laying the anti-adhesive elastic modified asphalt waterproofing membrane on the concrete cushion layer, and then laying the second anti-adhesive modified asphalt waterproofing membrane, the thickness of each membrane layer is 4 mm;

[0026] Pouring concrete in the reserved groove to form the concrete advance water stop, during which it is necessary to ensure that the concrete advance water stop is at the same level as the upper surface of the concrete cushion layer, and to reserve the arc-shaped groove;

[0027] Laying the first waterproofing membrane layer on the concrete advance waterstop, the first waterproofing membrane layer from bottom to top is the elastic modified asphalt waterproofing membrane, the modified asphalt waterproofing membrane and the first reverse-adhesive modified asphalt waterproofing membrane, and the thickness of each membrane layer is 4 mm;

[0028] The steel bars are tied with the arc groove as the center point, and the steel bars on both sides of the arc groove reserve a seismic isolation joint with the same width as the diameter of the arc groove, and a connecting pipe, a water stop strip, four sections of extruded polystyrene board and a water retaining member are installed in the seismic isolation joint and the steel bars on both sides;

[0029] Concrete is poured on the inner steel bars to form a first raft, the foam rod is installed in the vibration isolation joint, the lower end surface of the foam rod is ensured to be closely fitted with the arc-shaped groove, the uppermost extruded polystyrene board is removed, and at the same time, a template is installed on the periphery of the outer steel bars and concrete is poured on the outer steel bars to form a second raft;

[0030] Fill the waterproof coating within 50mm from the top of the extruded polystyrene board to the top of the raft slab, and reserve 50mm to provide space for the subsequent installation of the waterstop.

[0031] By adopting the above technical scheme, the method ensures the effectiveness and reliability of the drainage device through detailed construction steps and strict quality control. From the compaction and grooving of the rammed earth layer to the laying of the concrete cushion layer, and then to the laying of the waterproof membrane and the installation of the waterstop, each step has been carefully designed and constructed. This method not only improves the construction efficiency, but also ensures the structural integrity and waterproof performance of the drainage device, providing a strong guarantee for the stability and durability of the raft foundation structure.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. This device forms multiple waterproof barriers by designing a multi-layer waterproof structure, including a first waterproof membrane layer, a second waterproof membrane layer and a concrete advance waterstop. This multi-layer, composite waterproof design greatly improves the reliability and durability of the waterproof layer. At the same time, through the coordination between the water retaining parts, the water collection well and the drainage parts, multiple protections for the waterproof layer and efficient operation of the drainage system are achieved. This multi-layer, composite waterproof design not only improves the reliability and durability of the waterproof layer, but also enhances the stability and safety of the entire waterproof system. During long-term use, the device can effectively resist the erosion and damage of external moisture to ensure the dryness and safety of the building structure.

[0034] 2. The water retaining trough is designed to be concave, and its side walls are tightly bonded to the inner walls of the vibration isolation joint, forming an effective water flow barrier. This design can block the water flow on the upper part of the vibration isolation joint from penetrating to the lower part, and also prevent the water flow from the lower part from flowing back to the upper part, thereby maintaining a dry environment inside the vibration isolation joint. The clever coordination between the water retaining trough and the connecting pipe allows the blocked water flow to be discharged through the connecting pipe along a preset path, avoiding the risk of water accumulation and leakage. This design not only improves the drainage efficiency, but also ensures the long-term stability of the vibration isolation joint; through the design of the drain pipe, water can be quickly collected and discharged through the connecting pipe, greatly improving the drainage efficiency. At the same time, the polyester non-woven fabric wrapping also enhances the durability of the drain pipe and extends its service life. `

[0035] 3. The water collection wells respectively arranged on the first raft slab and the second raft slab, and the drainage components (such as submersible pumps) installed in the water collection wells, can quickly collect and discharge the accumulated water in the vibration isolation joints, and prevent the risk of leakage caused by long-term retention of water.

[0036] 4. The raft foundation vibration isolation joint drainage device and construction method provided by the present invention are suitable for various types of building foundation treatment needs, especially in buildings with micro-vibration protection requirements and waterless building environments. Its multiple waterproof barriers and optimized waterstop design enable the device to maintain good waterproof performance in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the planar layout structure of the anti-drainage device for the vibration isolation joint of the raft foundation of the present invention;

[0038] Figure 2 It is a schematic diagram of the cross-sectional structure of the first raft plate and the second raft plate of the present invention;

[0039] Figure 3 It is a schematic diagram of the three-dimensional connection structure between the concrete advance water stop and the concrete cushion layer of the present invention;

[0040] Figure 4 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0041] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0042] Figure 6 For the present invention Figure 2 The enlarged structural diagram at C in the middle;

[0043] Figure 7 It is a schematic diagram of the three-dimensional structure of the water retaining trough plate of the present invention;

[0044] Figure 8It is a schematic diagram of the three-dimensional structure of the hydrophobic pipe of the present invention.

[0045] In the figure: 1, the first raft; 2, the second raft; 3, the vibration isolation joint; 4, the first waterproof membrane layer; 401, the first anti-adhesive modified asphalt waterproof membrane; 402, the modified asphalt waterproof membrane; 403, the elastic modified asphalt waterproof membrane; 5, the concrete advance water stop; 501, the arc groove; 6, the second waterproof membrane layer; 601, the second anti-adhesive modified asphalt waterproof membrane; 602, the anti-adhesive elastic modified asphalt waterproof membrane; 7, the concrete cushion; 8, the rammed earth layer; 9, the foam rod; 10, the extruded polystyrene board; 11, the waterproof coating; 12, the water retaining part; 1201, the water retaining trough plate; 1202, the drain pipe; 13, the water stop; 1301, the fixing rib; 14, the first water collection well; 15, the second water collection well; 16, the connecting pipe; 17, the drainage part; 1701, the submersible pump; 1702, the drainage pipe. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. 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.

[0047] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0048] Embodiment 1, as Figure 1As shown in FIG. 7 , the specific scheme of the first embodiment is as follows: a raft foundation vibration isolation joint anti-drainage device, comprising a first raft 1 and a second raft 2, and a vibration isolation joint 3 arranged between the first raft 1 and the second raft 2, the lower end surfaces of the first raft 1 and the second raft 2 are provided with a first waterproof roll material layer 4, the first waterproof roll material layer 4 is a three-layer structure, from top to bottom are a first anti-adhesive modified asphalt waterproof roll material 401, a modified asphalt waterproof roll material 402 and an elastic modified asphalt waterproof roll material 403, the first anti-adhesive modified asphalt waterproof roll material 401, the modified asphalt waterproof roll material 402 and the elastic modified asphalt waterproof roll material 403 are all 4mm thick, the first waterproof roll material layer 4 serves as the second barrier of the waterproof system, and its three-layer structure provides excellent waterproof performance, each layer of the roll material is 4mm thick, ensuring sufficient strength and durability, and the anti-adhesive property enhances the bonding force with the base layer such as concrete, effectively preventing moisture penetration;

[0049] The lower end face of the first waterproof membrane is provided with a concrete advance waterstop 513, the cross-section of the concrete advance waterstop 513 is trapezoidal, and the upper end face of the concrete advance waterstop 5 is larger than the lower end face, and the upper end face of the concrete advance waterstop 5 is provided with an arc groove 501, and the thickness of the concrete advance waterstop 5 is 200mm-300mm. The concrete advance waterstop 5 has a trapezoidal cross-section, which enhances the bonding strength with the surrounding structure and effectively blocks the penetration path of water through the structural gaps. Its thickness is between 200mm-300mm, providing sufficient waterproof barrier and durability.

[0050] The lower end surface of the concrete advance water stop strip 5 is provided with a second waterproof roll material layer 6. The second waterproof roll material layer 6 is a two-layer structure, which is composed of a second anti-adhesive modified asphalt waterproof roll material 601 and an anti-adhesive elastic modified asphalt waterproof roll material 602 from top to bottom. The width of the anti-adhesive elastic modified asphalt waterproof roll material 602 is 2m. The thickness of the second anti-adhesive modified asphalt waterproof roll material 601 and the anti-adhesive elastic modified asphalt waterproof roll material 602 is 4mm. The second waterproof roll material layer 6 serves as the first waterproof barrier. Its two-layer structure also provides excellent waterproof performance. The thickness of 4mm and the width of 2m ensure the strength and coverage of the roll material. The anti-adhesive property enables the roll material to fit closely to the base layer, effectively preventing water penetration.

[0051] The lower end surface of the second waterproof membrane layer 6 is provided with a concrete cushion layer 7, and a reserved groove is provided on the concrete cushion layer 7 for installing the concrete advance waterstop strip 5. The thickness of the concrete cushion layer 7 is 90mm-110mm. The concrete cushion layer 7 provides a solid foundation for the waterproof system. Its thickness is between 90mm-110mm, ensuring sufficient bearing capacity and stability. The design of the reserved groove facilitates the installation of the concrete advance waterstop strip 5, ensuring the accurate position and waterproof effect of the waterstop strip 13. The lower end surface of the concrete cushion layer 7 is provided with a rammed earth layer 8.

[0052] The upper end surface of the first waterproof coiled material layer 4 is provided with a foam rod 9 located in the vibration isolation seam 3. The foam rod 9 is made of polyethylene and is a closed type. The diameter of the foam rod 9 is 100mm-200mm. The diameter of the foam rod 9 is the same as the width of the vibration isolation seam 3. The lower end surface of the foam rod 9 is fitted with the arc groove 501. The arc groove 501 further enhances the sealing performance and ensures the waterproof effect. The closed foam rod 9 made of polyethylene fills the gap of the vibration isolation seam 3 and effectively prevents moisture from penetrating from the gap. Its diameter is the same as the width of the vibration isolation seam 3, ensuring a tight filling effect. At the same time, the foam rod 9 also has a certain elasticity and recovery, can adapt to structural deformation, and maintain a waterproof effect.

[0053] An extruded polystyrene board 10 is provided in the vibration isolation joint 3, and a waterproof coating 11 is provided on the upper end surface of the extruded polystyrene board 10. The waterproof coating 11 is a single-component polyurethane waterproof coating 11. The extruded polystyrene board 10 is used as a thermal insulation material to improve the thermal insulation performance of the vibration isolation joint 3 and enhance the durability of the waterproof layer. The single-component polyurethane waterproof coating 11 is applied on the extruded polystyrene board 10 to form an additional waterproof layer, which further improves the waterproof effect.

[0054] The extruded polystyrene board 10 is embedded with a water retaining member 12, and the water retaining member 12 includes a pair of water retaining trough plates 1201 facing opposite directions and installed in the vibration isolation joint 3. The water retaining trough plates 1201 are concave, and the side walls on both sides of the water retaining trough plates 1201 are bonded to the inner side walls of the vibration isolation joint 3. The water retaining trough plates 1201 are made of rubber, and their concave design can effectively collect and block moisture, and prevent moisture from penetrating into the interior of the building structure through the vibration isolation joint 3. The side walls on both sides of the water retaining trough plates 1201 are tightly bonded to the inner side walls of the vibration isolation joint 3 by adhesives, forming a strong and non-corrosive layer. The destructible waterproof barrier is designed not only to improve the waterproof performance, but also to ensure the stability and durability of the water retaining member 12 in the vibration isolation joint 3. The rubber water retaining trough plate 1201 adds a unique advantage to this design. The elasticity, weather resistance and corrosion resistance of rubber enable the water retaining trough plate 1201 to maintain its structural integrity and waterproof performance in various harsh environments. Even if the vibration isolation joint 3 undergoes slight deformation due to earthquakes, temperature changes and other factors, the rubber water retaining trough plate 1201 can rely on its excellent elastic properties to fit tightly to the inner wall of the vibration isolation joint 3 to prevent moisture penetration.

[0055] A waterstop 13 located inside the vibration isolation joint 3 is pre-embedded inside the first raft 1 and the second raft 2. The waterstop 13 is fixedly installed inside the first raft 1 and the second raft 2 through fixing ribs 1301. The waterstop 13 is a 400*10mm embedded rubber waterstop 13. Both ends of the waterstop 13 are respectively fixed to the steel bars of the edge sealing on both sides of the first raft 1 and the second raft 2 through anchor bolts. The rubber waterstop 13 is fixed in the raft through fixing ribs 1301 and anchor bolts, forming a continuous waterproof barrier. Its excellent elasticity and recovery can adapt to structural deformation and maintain waterproof effect. At the same time, the waterstop 13 also has a certain durability and can maintain waterproof performance for a long time.

[0056] The first raft 1 and the second raft 2 are respectively provided with a first water collection well 14 and a second water collection well 15, the number of the first water collection well 14 and the second water collection well 15 are two respectively, and the depth of the first water collection well 14 is higher than the depth of the second water collection well 15, the first water collection well 14 and the second water collection well 15 are respectively arranged on the first raft 1 and the second raft 2, for collecting infiltrated water, and the design of different depths enables the water collection wells to collect water at different heights respectively, and a connecting pipe 16 is provided between the first water collection well 14 and the second water collection well 15 and the water retaining member 12, and the connecting pipe 16 is inclined to the first water collection well 14 and the second water collection well 15, and the design of the connecting pipe 16 enables the water blocked by the water retaining member 12 to be discharged into the first water collection well 14 and the second water collection well 15;

[0057] Drainage components 17 are respectively installed in the first water collection well 14 and the second water collection well 15. The drainage components 17 include submersible pumps 1701 installed in the first water collection well 14 and the second water collection well 15. The submersible pump 1701 is a stainless steel sewage submersible pump 1701, and its model is V750F. The submersible pump 1701 is the core equipment of the drainage component 17. Its stainless steel material ensures sufficient corrosion resistance and durability. At the same time, its submersible pump 1701 has a strong drainage capacity and can quickly discharge the collected water to avoid the risk of water accumulation and leakage. The drainage ends of several submersible pumps 1701 are respectively connected to drainage pipes 1702 extending to the outside of the first water collection well 14 and the second water collection well 15. The drainage pipes 1702 ensure smooth and efficient drainage.

[0058] Embodiment 2: In some embodiments, the water retaining member 12 can be replaced, such as Figure 8 As shown, the replacement water retaining member 12 includes a drain pipe 1202 installed in the vibration isolation joint 3, and the drain pipe 1202 is made of PVC. The drain pipe 1202 adopts PVC material, which not only has excellent corrosion resistance and weather resistance, but also is easy to process and install, which greatly improves the construction efficiency. The outer circumference of the drain pipe 1202 is provided with 4 holes every 200mm-400mm, and the diameter of some holes is 25mm-30mm. The outer circumference of the drain pipe 1202 is carefully provided with 4 holes every 200mm-400mm, and the diameter of these holes is 25mm-30mm, which ensures that water can smoothly enter the drain pipe 1202 through the holes, so as to achieve fast and effective drainage;

[0059] The outer periphery is wrapped with polyester non-woven fabric, and the surface density of the polyester non-woven fabric is 200g / m2. The polyester non-woven fabric has good filtering performance and can effectively block large particles of impurities from entering the drain pipe 1202 while maintaining smooth water flow. In addition, its surface density is moderate, which not only ensures sufficient strength, but also avoids increasing construction difficulty due to excessive thickness. A buffer seat is installed between the outer periphery of the drain pipe 1202 and the inner wall of the vibration isolation seam 3. The design of the buffer seat not only protects the inner wall of the vibration isolation seam 3 from water erosion, but also improves the stability and durability of the drain pipe 1202. The buffer seat is usually made of soft and elastic material, which can effectively absorb and disperse the impact force of water flow, and at the same time prevent deformation from affecting the drain pipe 1202.

[0060] A construction method for a raft foundation vibration isolation joint anti-drainage device comprises the following steps:

[0061] According to the construction drawings, the rammed earth layer 8 is first compacted. During the compaction process, it is necessary to ensure that the soil layer is evenly stressed and the density meets the design requirements, laying a solid foundation for subsequent construction. After the compaction is completed, according to the requirements of the drawings, precise grooves are made on the rammed earth layer 8 to prepare for the laying of the concrete cushion layer 7.

[0062] A layer of concrete cushion 7 is evenly laid on the rammed earth layer 8, and its thickness must be strictly controlled between 90mm-110mm. When laying, pay attention to the uniformity and density of the concrete to ensure that the cushion is flat and has no hollows. At the same time, a reserved groove for the installation of the concrete advance water stop 5 is reserved on the concrete cushion 7. The size and position of the reserved groove must be completely consistent with the construction drawings;

[0063] After the concrete cushion layer 7 is laid, the waterproofing membrane is laid. First, a layer of anti-adhesive elastic modified asphalt waterproofing membrane 602 is laid to ensure that the membrane is flat and wrinkle-free and fits tightly with the concrete cushion layer 7. Then, a second layer of anti-adhesive modified asphalt waterproofing membrane 601 is laid. The flatness of the membrane and the tight fit with the base layer must also be ensured. The thickness of each layer of membrane is 4 mm to meet the design requirements.

[0064] In the reserved groove, concrete is poured according to the requirements of the construction drawings to form a concrete advance waterstop 5. During the pouring process, it is necessary to ensure that the concrete and the upper surface of the concrete cushion layer 7 are at the same horizontal plane to ensure the flatness and waterproof effect of the waterstop 13. At the same time, an arc-shaped groove 501 is reserved during the pouring process. The arc-shaped groove 501 is located in the middle position, and the shape and size of the groove must meet the design requirements to enhance the sealing performance of the waterstop 13.

[0065] On the concrete advance water stop strip 5, continue to lay the first waterproof roll material layer 4, which is composed of elastic modified asphalt waterproof roll material 403, modified asphalt waterproof roll material 402 and first anti-adhesive modified asphalt waterproof roll material 401 from bottom to top. The thickness of each roll material is also 4mm. When laying, ensure that the overlap width and sealing performance between the roll materials meet the design requirements;

[0066] After the waterproofing coiled material layer is laid, the steel bars are tied with the arc groove 501 as the center point, and the steel bars on both sides of the arc groove 501 reserve a seismic isolation joint 3 with the same width as the diameter of the arc groove 501. The connecting pipe 16, the water stop 13, the four-section extruded polystyrene board 10 and the water retaining member 12 are installed in the seismic isolation joint 3 and the steel bars on both sides. The specifications, quantity and position of the steel bars must be implemented according to the requirements of the construction drawings;

[0067] Concrete the inner steel bars to form a first raft 1, install the foam rod 9 in the vibration isolation joint 3, ensure that the lower end surface of the foam rod 9 is tightly fitted with the arc groove 501, remove the uppermost extruded polystyrene board 10, and at the same time, install a template on the periphery of the outer steel bars and cast concrete on the outer steel bars to form a second raft 2;

[0068] Finally, the waterproof coating 11 is poured from the top of the extruded polystyrene board 10 to the range of 50 mm from the top of the raft. The waterproof coating 11 needs to be made of high-performance materials such as single-component polyurethane to ensure its waterproof performance and durability. During the filling process, it is necessary to ensure that the coating is evenly distributed without omission.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A raft foundation vibration isolation joint anti-drainage device, comprising a first raft and a second raft, and a vibration isolation joint arranged between the first raft and the second raft, wherein: The lower end surfaces of the first raft slab and the second raft slab are provided with a first waterproof membrane layer, the lower end surfaces of the first waterproof membrane are provided with a concrete advance waterstop strip, the lower end surface of the concrete advance waterstop strip is provided with a second waterproof membrane layer, the lower end surface of the second waterproof membrane layer is provided with a concrete cushion layer, and the lower end surface of the concrete cushion layer is provided with a rammed earth layer; the upper end surface of the first waterproof membrane layer is provided with a foam rod located in the vibration isolation joint, the vibration isolation joint is provided with an extruded polystyrene board, the upper end surface of the extruded polystyrene board is provided with a waterproof coating, a water retaining member is embedded in the extruded polystyrene board, and the inner sides of the first raft slab and the second raft slab are pre-buried with a waterstop strip located inside the vibration isolation joint; the first raft slab and the second raft slab are respectively provided with a first water collection well and a second water collection well, connecting pipes are provided between the first water collection well and the second water collection well and the water retaining member, and drainage members are respectively installed in the first water collection well and the second water collection well.

2. A raft foundation vibration isolation joint anti-drainage device according to claim 1, characterized in that: The first waterproof membrane layer has a three-layer structure, which includes, from top to bottom, a first reverse-adhesive modified asphalt waterproof membrane, a modified asphalt waterproof membrane and an elastic modified asphalt waterproof membrane. The thickness of the first reverse-adhesive modified asphalt waterproof membrane, the modified asphalt waterproof membrane and the elastic modified asphalt waterproof membrane are all 4 mm.

3. The raft foundation vibration isolation joint anti-drainage device according to claim 1 is characterized by: The cross-section of the concrete advance waterstop is trapezoidal, and the upper end surface of the concrete advance waterstop is larger than the lower end surface. The upper end surface of the concrete advance waterstop is provided with an arc-shaped groove, and the thickness of the concrete advance waterstop is 200mm-300mm.

4. The raft foundation vibration isolation joint anti-drainage device according to claim 1, characterized in that: The second waterproof membrane layer has a two-layer structure, which includes, from top to bottom, a second anti-adhesive modified asphalt waterproof membrane and an anti-adhesive elastic modified asphalt waterproof membrane. The width of the anti-adhesive elastic modified asphalt waterproof membrane is 2m, and the thickness of the second anti-adhesive modified asphalt waterproof membrane and the anti-adhesive elastic modified asphalt waterproof membrane is 4mm.

5. The raft foundation vibration isolation joint anti-drainage device according to claim 1, characterized in that: The concrete cushion layer is provided with a reserved groove for installing the concrete advance water stop strip, and the thickness of the concrete cushion layer is 90mm-110mm.

6. The anti-drainage device for vibration isolation joints of raft foundation according to claim 1 is characterized by: The foam rod is of a closed type, the diameter of the foam rod is 100 mm-200 mm, and the diameter of the foam rod is the same as the width of the vibration isolation gap.

7. The anti-drainage device for vibration isolation joints of raft foundation according to claim 1 is characterized by: The water retaining member comprises a pair of water retaining groove plates which are installed in the vibration isolation slot and face in opposite directions. The water retaining groove plates are concave, and the side walls on both sides of the water retaining groove plates are bonded to the inner side walls of the vibration isolation slot.

8. The anti-drainage device for vibration isolation joints of raft foundation according to claim 1, characterized in that: The water retaining member comprises a drain pipe installed in the vibration isolation joint, the outer circumference of the drain pipe is provided with four holes every 200mm-400mm, the diameter of some holes is 25mm-30mm, the outer circumference is wrapped with polyester non-woven fabric, and a buffer seat is installed between the outer circumference of the drain pipe and the inner wall of the vibration isolation joint.

9. The anti-drainage device for vibration isolation joints of raft foundation according to claim 1, characterized in that: The drainage member includes a submersible pump installed in the first water collection well and the second water collection well, and drainage ends of a plurality of the submersible pumps are respectively connected to drainage pipes extending to the outside of the first water collection well and the second water collection well.

10. A construction method for a raft foundation vibration isolation joint anti-drainage device according to any one of claims 1 to 9, characterized in that: The steps include: The rammed earth layer is compacted and grooved according to the construction drawings, and the concrete cushion layer is laid on the rammed earth layer, the thickness of the concrete cushion layer is controlled between 90mm and 110mm, and a reserved groove for the installation of the concrete advance water stop is reserved on the concrete cushion layer; Firstly laying the anti-adhesive elastic modified asphalt waterproofing membrane on the concrete cushion layer, and then laying the second anti-adhesive modified asphalt waterproofing membrane, the thickness of each membrane layer is 4 mm; Pouring concrete in the reserved groove to form the concrete advance water stop, during which it is necessary to ensure that the concrete advance water stop is at the same level as the upper surface of the concrete cushion layer, and to reserve the arc-shaped groove; Laying the first waterproofing membrane layer on the concrete advance waterstop, the first waterproofing membrane layer from bottom to top is the elastic modified asphalt waterproofing membrane, the modified asphalt waterproofing membrane and the first reverse-adhesive modified asphalt waterproofing membrane, and the thickness of each membrane layer is 4 mm; The steel bars are tied with the arc groove as the center point, and the steel bars on both sides of the arc groove reserve a seismic isolation joint with the same width as the diameter of the arc groove, and a connecting pipe, a water stop strip, four sections of extruded polystyrene board and a water retaining member are installed in the seismic isolation joint and the steel bars on both sides; Concrete is poured on the inner steel bars to form a first raft, the foam rod is installed in the vibration isolation joint, the lower end surface of the foam rod is ensured to be closely fitted with the arc-shaped groove, the uppermost extruded polystyrene board is removed, and at the same time, a template is installed on the periphery of the outer steel bars and concrete is poured on the outer steel bars to form a second raft; Fill the waterproof coating within 50 mm from the top of the extruded polystyrene board to the top of the raft slab, and reserve 50 mm to provide space for the subsequent installation of the waterstop.

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