Waterproof method for roof deformation joint
By constructing waterproof walls on both sides of the roof deformation joint and fixing polymer-coated water stops, the problem of poor waterproofing effect of roof deformation joints is solved, achieving more efficient waterproofing performance and simple construction process.
Patent Information
- Application Number
- CN202510399727.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2025-05-23
AI Technical Summary
Due to structural defects, roof deformation joints lead to poor waterproofing effect and are prone to leakage problems, which affects the durability of the structure and use function.
Waterproof walls are constructed on both sides of the roof deformed joints, and polymer-coated water stops are fixed at the deformed joints. The polymer-coated water stops are V-shaped or W-shaped, and are longitudinally connected, and combined with the construction of the external waterproof layer to form comprehensive waterproof measures.
Through the use of polymer-coated water stops, it effectively resists external water pressure, improves waterproofing effect, simplifies construction convenience, solves the installation quality and joint connection problems of water stops, and significantly improves the waterproof and waterproof performance of roof deformation joints.
Smart Images
Figure CN120026707A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of waterproof engineering technology, and in particular to a waterproof method for roof deformation joints. Background Art
[0002] Deformation joints are pre-set joints to prevent structural cracking or damage caused by uneven structural settlement, thermal expansion and contraction, etc., including expansion joints, settlement joints and seismic joints. In terms of structure, they are generally "three joints in one". Expansion joints are mainly set to deal with horizontal movement, settlement joints are mainly set to deal with vertical shear movement, and deformation joints set to deal with horizontal and vertical staggered rapid movement during earthquakes are seismic joints. Deformation joints are generally large, and their width and spacing must be determined by calculation. The width of deformation joints in underground structures is about 20mm~30mm, and the width of deformation joints in above-ground structures is about 50mm~200mm.
[0003] Since the expansion joint is a real open joint, the structure lacks self-waterproofing, and additional waterproofing is its only waterproof and water-stopping measure. Once damaged, there is a risk of leakage. It has always been a weak point in the engineering waterproofing system, and basically "nine out of ten joints leak". Long-term water leakage not only affects the durability of the structure and shortens its service life, but also seriously affects its use function and affects people's normal life.
[0004] At present, the expansion joints of roof structures generally refer to the existing national building standard design atlas "Expansion Joint Building Structure" 14J936. Due to the complex structure of its water-stopping measures and the difficulty of on-site construction, the engineering quality of the expansion joints is poor, which is a weak point in the project. Summary of the invention
[0005] In order to improve the waterproof and water-stopping effect of roof deformation joints, the present application provides a waterproof method for roof deformation joints.
[0006] The present application provides a waterproof method for roof expansion joints, which adopts the following technical solution: A waterproof method for a roof deformation joint comprises the following steps: S1. Construct retaining walls on both sides of the expansion joint; S2. The polymer coating waterstop is fixed at the deformation joint, and the polymer coating waterstop is V-shaped or W-shaped; S3, polymer coating water stop strip is connected longitudinally; S4. Construction of external waterproof layer.
[0007] Optionally, in S1, the thickness of the retaining wall on both sides of the expansion joint shall not be less than 250mm, and shall be constructed with waterproof concrete with a grade not lower than C30 and a water-resistance grade not lower than P8; the height of the retaining wall shall be higher than the roof paving structure or the covering soil by not less than 100mm; the transverse and longitudinal reinforcement in the retaining wall shall not be less than φ10@150, and when the roof covering soil is thicker, the reinforcement shall be arranged according to the force requirements; the retaining wall is required to be constructed simultaneously with the top plate. If constructed in stages, measures shall be taken to ensure cold joint waterproofing.
[0008] Optionally, in S2, the polymer coating waterstop uses a material with excellent rigidity and tensile properties such as a steel plate or a resin plate as the core material, and is formed by wrapping the polymer waterproof and anti-corrosion material 360 degrees on the outside.
[0009] Optionally, in S2, the polymer coated waterstop is bonded to the concrete base surface with a matching polymer fixed adhesive, the end is sealed with a matching polymer fixed adhesive, and fixed with anchor bolts or expansion bolts with a fixing spacing of 1m~1.5m, and the exposed anchor bolts or expansion bolts should be covered with a matching polymer fixed adhesive with a thickness of not less than 1.5mm.
[0010] Optionally, in S3, the polymer coated waterstop is longitudinally connected by matching connectors and matching connecting adhesive to connect the butt joints of the polymer coated waterstop. The matching connectors and the polymer coated waterstop can be fixed with rivets or screws, and the exposed rivets or screws should be covered with matching connecting adhesive with a thickness of not less than 1.5 mm.
[0011] Optionally, after S3 and before S4, water receiving boxes are installed at the bottom of the water retaining walls on both sides.
[0012] Optionally, one side of the expansion joint is set as a first water retaining wall, and the other side is set as a second water retaining wall. The first water retaining wall is provided with a first slot for accommodating a water receiving box on a side close to the lining plate, and the second water retaining wall is provided with a second slot for accommodating a water receiving box on a side close to the lining plate. The second slot is provided with a plurality of embedded slots on a side opposite to the first slot, and an installation box is provided in the embedded slot. A sliding rod is provided for sliding through one end of the installation box close to the lining plate, an elastic member is provided between the sliding rod and the inner wall of the installation box, and a sliding block is provided at one end of the sliding rod passing through the installation box. One side of the water receiving box is fixed to the slot wall of the first slot, and the other side is fixed to the sliding block.
[0013] Optionally, a plug connector is provided on one side of the water collecting box close to the sliding block, a plug-in groove matched with the plug connector is provided on the sliding block, a receiving groove is provided on one side of the plug-in groove, a snap-in block is provided in the receiving groove, a snap-in groove matched with the snap-in block is provided on the plug connector, and a compression spring is also provided in the receiving groove, one end of the compression spring is fixed to the bottom wall of the receiving groove, and the other end is fixed to the snap-in block.
[0014] Optionally, a traction rope is provided at one end of the clamping block close to the bottom wall of the accommodating groove, the sliding block is provided with a through hole for the traction rope to pass through, a pull ring is provided at one end of the traction rope passing through the sliding block for the long rod component to pass through, and the sliding block is provided with a side ear for hooking the long rod component.
[0015] Optionally, a fixed shell is provided on the second water retaining wall, an upper sealing strip and a lower sealing strip are provided inside the fixed shell, a sealing gap is formed between the upper sealing strip and the lower sealing strip, and a flange on one side of the water receiving box away from the first slot can be slidably arranged in the sealing gap.
[0016] In summary, this application includes the following beneficial technical effects: 1. The present application fixes a polymer coated waterstop at the roof deformation joint, and the polymer coated waterstop is arranged in a V-shape or W-shape. Since the V-shaped or W-shaped polymer coated waterstop has good low-temperature flexibility, heat resistance, heat aging resistance, acid and alkali corrosion resistance, its outer waterproof and anti-corrosion polymer coating has strong adhesion with the post-cast concrete and the internal core material, the peeling strength with the post-cast concrete is not less than 0.45Mpa, and the bonding strength with the internal core material is not less than 2Mpa, it can effectively resist external water pressure and achieve a waterproof effect.
[0017] 2. The polymer coated waterstop has a simple lap joint form, which is easy to construct and can effectively solve the problems of waterstop installation quality, joint connection in complex areas and water leakage in joints.
[0018] 3. The fixing adhesive used for fixing the polymer coated waterstop has good impermeability, adhesion and anti-seepage performance. It can effectively fix the waterstop in the roof deformation joint and ensure the impermeability of the bonding layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the waterproof structure of the roof expansion joint in Example 1 of the present application.
[0020] Figure 2 It is a schematic diagram of the structure of the polymer coating waterstop in Example 1 of the present application.
[0021] Figure 3 It is a diagram showing the connection method of the polymer coating waterstop joint in Example 1 of the present application.
[0022] Figure 4 It is a cross-sectional view showing the connection structure of the polymer coating waterstop joint in Example 1 of the present application.
[0023] Figure 5 It is a schematic diagram of the waterproof structure of the roof deformation joint in the second embodiment of the present application.
[0024] Figure 6 yes Figure 5 A local enlarged schematic diagram of point A in the middle.
[0025] Figure 7 This is a diagram showing the state when the clamping block in the second embodiment of the present application is completely retracted into the accommodating groove.
[0026] Explanation of the reference numerals in the accompanying drawings: 1. polymer coated waterstop; 11. core material; 12. waterproof and anticorrosive polymer coating; 13. matching polymer fixing adhesive; 14. docking line; 15. matching connector; 16. matching connecting adhesive; 2. outer waterproof layer; 3. water collecting box; 31. plug connector; 311. snap-in groove; 4. first water retaining wall; 41. first notch; 5. second water retaining wall; 51. second notch; 52. embedded groove; 53. installation box; 531. elastic member; 54. sliding rod; 55. fixed shell; 551. upper sealing strip; 552. lower sealing strip; 553. sealing gap; 6. sliding block; 61. plug-in groove; 62. accommodating groove; 621. compression spring; 63. snap-in block; 64. traction rope; 65. perforation; 66. pull ring; 67. side ear. DETAILED DESCRIPTION
[0027] The following combination Figure 1-Figure 7 , further details of this application are given.
[0028] Embodiment 1:
[0029] The present application embodiment discloses a waterproof method for roof deformation joints. Figure 1 , a waterproof method for a roof deformation joint, comprising the following steps: S1. Construct retaining walls on both sides of the expansion joint; S2. A polymer coating waterstop 1 is fixed to the deformation joint, and the polymer coating waterstop 1 is V-shaped or W-shaped; S3, polymer coating water stop 1 is connected longitudinally; S4. Construction of external waterproof layer 2.
[0030] Reference Figure 1 In S1, the thickness of the retaining wall on both sides of the expansion joint shall not be less than 250mm, and it shall be constructed with waterproof concrete with a grade not lower than C30 and a water-resistance grade not lower than P8; the height of the retaining wall shall be higher than the roof paving structure or covering soil by not less than 100mm; the transverse and longitudinal reinforcement in the retaining wall shall not be less than φ10@150, and when the roof covering soil is thicker, the reinforcement shall be arranged according to the force requirements; the retaining wall is required to be constructed simultaneously with the top plate. If it is constructed in stages, measures should be taken to prevent cold joints from fracturing.
[0031] Reference Figure 2In S2, the polymer coating waterstop 1 uses a material with excellent rigidity and tensile properties such as steel plate or resin plate as the core material 11, and the outer side is wrapped with a polymer waterproof and anti-corrosion material 360 degrees. The total thickness of the polymer coating waterstop 1 is not less than 3.4mm, of which the thickness of the core material 11 is preferably 1mm, and the thickness of the waterproof and anti-corrosion polymer coating 12 is not less than 1.2mm. The polymer coating waterstop 1 covers the retaining wall on both sides of the deformation joint, and the total width is determined according to the thickness of the retaining wall. The width and length of the "V-type or W-type" in the middle of the polymer coating waterstop 1 are determined according to the width of the deformation joint. Generally, the upper width is equal to the seam width. The length of the "V-type or W-type" is generally 50mm~80mm according to the seam width, and the larger value is taken when the seam width is larger. The polymer coating waterstop 1 has good low-temperature flexibility, tensile strength, heat resistance, heat aging resistance, acid and alkali corrosion resistance. The polymer coating waterstop 1 is bonded to the concrete base surface with a matching polymer fixing adhesive 13, the end is sealed with a matching polymer fixing adhesive 13, and fixed with anchor bolts or expansion bolts with a fixing spacing of 1m~1.5m, and the exposed anchor bolts or expansion bolts should be covered with a matching polymer fixing adhesive 13 with a thickness of not less than 1.5mm.
[0032] Reference Figure 3 and Figure 4 In S3, when the longitudinal joint of the polymer coating waterstop 1 is connected, it is butted along the preset docking line 14. The longitudinal joint uses a matching connector 15 and a matching connecting glue 16 to connect the butt joint of the polymer coating waterstop 1. The matching connector 15 and the polymer coating waterstop 1 can be fixed with rivets or screws, and the exposed rivets or screws should be covered with a matching connecting glue 16 with a thickness of not less than 1.5mm. The matching connecting glue 16 used for the longitudinal connection of the polymer coating waterstop 1 should have good low-temperature flexibility, heat resistance, heat aging resistance, acid and alkali corrosion resistance, and low water absorption. The lap shear strength of the polymer coating waterstop 1 after connection is not less than 4N / mm. In this way, this waterproofing method adopts a simple lap joint form and a customizable product, which improves the convenience of construction and can effectively solve the problems of waterstop installation quality, complex joint connection and water leakage at the joint.
[0033] Reference Figure 1 In S4, the outer waterproof layer 2 is constructed according to the design scheme, and the construction process requirements of the outer waterproof layer 2 must meet the relevant specifications and design requirements.
[0034] The implementation principle of Example 1 of the present application is: the present application fixes a polymer coating waterstop 1 at the roof deformation joint, and the polymer coating waterstop 1 is arranged in a V-shape or W-shape. Since the V-shaped or W-shaped polymer coating waterstop 1 has good low-temperature flexibility, heat resistance, heat aging resistance, acid and alkali corrosion resistance, its outer waterproof and anti-corrosion polymer coating 12 has strong adhesion with the post-cast concrete and the internal core material 11, and the peeling strength with the post-cast concrete is not less than 0.45Mpa, and the bonding strength with the internal core material 11 is not less than 2Mpa, which can effectively resist external water pressure and achieve a waterproof effect.
[0035] The polymer coating waterstop 1 in the present application has a simple lap joint form, is easy to construct, and can effectively solve the problems of waterstop installation quality, complex joint connection and water leakage at the joint.
[0036] In addition, the fixing adhesive used to fix the polymer coating waterstop 1 has good impermeability, adhesion, and anti-seepage properties, which can effectively fix the waterstop in the roof deformation joint and ensure the impermeability of the bonding layer.
[0037] Embodiment 2:
[0038] Embodiment 2 of the present application discloses a waterproof method for a roof deformation joint. Figure 5-Figure 7 The difference between the second embodiment and the first embodiment is that: after S3 and before S4, a water receiving box 3 is installed at the bottom of the water retaining wall on both sides. The installation structure of the water receiving box 3 is as follows: Reference Figure 5 and Figure 6 , one side of the deformation joint is set as a first water retaining wall 4, and the other side is set as a second water retaining wall 5. The first water retaining wall 4 is provided with a first notch 41 for accommodating the water receiving box 3 on one side close to the lining plate, and the second water retaining wall 5 is provided with a second notch 51 for accommodating the water receiving box 3 on one side close to the lining plate. The second notch 51 is provided with a plurality of pre-buried grooves 52 on the side facing the first notch 41, and a mounting box 53 is pre-buried in the pre-buried grooves 52. A sliding rod 54 is slidably penetrated at one end of the mounting box 53 close to the lining plate, and an elastic member 531 is provided between the sliding rod 54 and the inner wall of the mounting box 53. A sliding block 6 is fixed to one end of the sliding rod 54 passing through the mounting box 53. One side of the water receiving box 3 is fixed to the groove wall of the first notch 41 by bolts or anchor bolts, and the other side is fixed to the sliding block 6. In the second embodiment, the elastic member 531 is a rubber pad.
[0039] Reference Figure 6 and Figure 7A plug connector 31 is welded on one side of the water receiving box 3 near the sliding block 6, a plug connector slot 61 matching with the plug connector 31 is provided on the side wall of the sliding block 6, a receiving slot 62 is provided on one side of the plug connector slot 61, a clamping block 63 is slidably provided in the receiving slot 62, and a clamping slot 311 matching with the clamping block 63 is provided on the side wall of the plug connector 31. A compression spring 621 is also installed in the receiving slot 62, and one end of the compression spring 621 is fixed to the bottom wall of the receiving slot 62, and the other end is fixed to the clamping block 63. When the compression spring 621 is at the compression limit, the clamping block 63 is completely located in the receiving slot 62; when the compression spring 621 is in the natural state, a part of the clamping block 63 is located in the receiving slot 62, and the other part is located in the clamping slot 311.
[0040] Reference Figure 6 and Figure 7 A traction rope 64 is connected to one end of the clamping block 63 near the bottom wall of the accommodating groove 62, and a through hole 65 is opened on the sliding block 6 for the traction rope 64 to pass through. A pull ring 66 is fixed to one end of the traction rope 64 passing through the sliding block 6, and a side ear 67 for hooking the long rod component is welded on the side wall of the sliding block 6.
[0041] Reference Figure 6 , since the side of the water receiving box 3 close to the second water retaining wall 5 is movable, in order to ensure the sealing between the water receiving box 3 and the second water retaining wall 5, and thus improve its waterproof and water-stopping effect, a fixed shell 55 is fixed on the second water retaining wall 5, and an upper sealing strip 551 and a lower sealing strip 552 are fixed in the fixed shell 55, and a sealing gap 553 is formed between the upper sealing strip 551 and the lower sealing strip 552, and the side flange of the water receiving box 3 away from the first notch 41 can be slidably arranged in the sealing gap 553. In the second embodiment, the fixed shell 55 is made of stainless steel, and the upper sealing strip 551 and the lower sealing strip 552 are made of wear-resistant rubber.
[0042] The installation method of the water receiving box 3 is as follows: First, a long rod member is taken to continuously pass through the plurality of pull rings 66, and then the plurality of pull rings 66 are pulled simultaneously by pulling the long rod member, thereby pulling the clamping blocks 63 in the plurality of sliding blocks 6 to move, so that the clamping blocks 63 are gradually retracted into the receiving grooves 62, and the compression springs 621 are gradually compressed; Secondly, the long rod member is hooked onto the side ears 67 of the plurality of sliding blocks 6 at the same time, at which time, the clamping block 63 is completely retracted into the receiving groove 62; Then, align the flange of one side of the water receiving box 3 away from the first notch 41 with the sealing gap 553 and insert it, and align the plug connector 31 with the plug slot 61 to complete the plug-in fit; Next, the long rod member is pulled out from the plurality of pull rings 66, the compression spring 621 releases energy, driving the clamping block 63 to reset, the clamping block 63 and the clamping groove 311 complete the clamping fit, and the water receiving box 3 and the sliding block 6 complete the fixation; Finally, the other side of the water receiving box 3 is fixed to the groove wall of the first groove 41 by using bolts or anchor bolts.
[0043] The implementation principle of the second embodiment of the present application is as follows: compared with the first embodiment, the present application installs a water receiving box 3 at the bottom of the roof deformation joint, and the water receiving box 3 can collect rainwater or condensed water that penetrates from the deformation joint, and can direct the infiltrated water into the rainwater pipe through the water receiving box 3, thereby further improving the waterproof and water-stopping effect of the roof deformation joint. And because the first water retaining wall 4 and the second water retaining wall 5 located on both sides of the roof deformation joint may produce relative displacement in long-term use, in the second embodiment, one side of the water receiving box 3 is fixed to the first water retaining wall 4, and the other side is movably connected to the second water retaining wall 5, thereby avoiding the possibility of damage or deformation of the water receiving box 3 due to deformation of the wall structure on both sides of the deformation joint, thereby improving the durability and adaptability of the water receiving box 3, and ensuring a long-term and stable waterproof and water-stopping effect.
[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A waterproof method for roof expansion joints, characterized in that: The following steps are involved: S1. Construct retaining walls on both sides of the expansion joint; S2, a polymer coating water stop strip (1) is fixed to the deformation joint, and the polymer coating water stop strip (1) is V-shaped or W-shaped; S3, the polymer coating water stop (1) is longitudinally connected; S4. Construction of external waterproof layer (2).
2. A waterproofing method for roof expansion joints according to claim 1, characterized in that: In S1, the thickness of the retaining wall on both sides of the expansion joint shall not be less than 250mm, and it shall be constructed with waterproof concrete with a grade not lower than C30 and a water-resistance grade not lower than P8; the height of the retaining wall shall be higher than the roof paving structure or the covering soil by not less than 100mm; the transverse and longitudinal reinforcement in the retaining wall shall not be less than φ10@150, and when the roof covering soil is thicker, the reinforcement shall be arranged according to the force requirements; the retaining wall is required to be constructed simultaneously with the top plate. If it is constructed in stages, measures shall be taken to ensure cold joint waterproofing.
3. A waterproof method for roof expansion joints according to claim 1, characterized in that: In S2, the polymer coating water stop strip (1) uses a material with excellent rigidity and tensile properties such as a steel plate or a resin plate as a core material (11), and is formed by wrapping a polymer waterproof and anti-corrosion material 360 degrees on the outside.
4. A waterproof method for roof expansion joints according to claim 3, characterized in that: In S2, the polymer coating water stop strip (1) is bonded to the concrete base surface with a matching polymer fixing adhesive (13), the end is sealed with a matching polymer fixing adhesive (13), and is fixed with anchor bolts or expansion bolts with a fixing interval of 1m~1.5m. The exposed anchor bolts or expansion bolts should be covered with a matching polymer fixing adhesive (13) with a thickness of not less than 1.5mm.
5. A waterproof method for roof expansion joints according to claim 1, characterized in that: In S3, the polymer coating water stop belt (1) is longitudinally connected by a matching connector (15) and a matching connecting glue (16) to connect the butt joints of the polymer coating water stop belt (1). The matching connector (15) and the polymer coating water stop belt (1) can be fixed by rivets or screws, and the exposed rivets or screws should be covered with a matching connecting glue (16) with a thickness of not less than 1.5 mm.
6. A waterproof method for roof expansion joints according to claim 1, characterized in that: After S3 and before S4, water receiving boxes (3) are installed at the bottom of the water retaining walls on both sides.
7. A waterproofing method for roof expansion joints according to claim 6, characterized in that: One side of the deformation joint is set as a first water retaining wall (4), and the other side is set as a second water retaining wall (5); a first notch (41) for accommodating a water receiving box (3) is provided on a side of the first water retaining wall (4) close to the lining plate; a second notch (51) for accommodating a water receiving box (3) is provided on a side of the second water retaining wall (5) close to the lining plate; a plurality of pre-buried grooves (52) are provided on a side of the second notch (51) directly facing the first notch (41); a mounting box (53) is provided in the pre-buried groove (52); a sliding rod (54) is slidably penetrated at one end of the mounting box (53) close to the lining plate; an elastic member (531) is provided between the sliding rod (54) and the inner wall of the mounting box (53); a sliding block (6) is provided at one end of the sliding rod (54) passing through the mounting box (53); one side of the water receiving box (3) is fixed to the groove wall of the first notch (41), and the other side is fixed to the sliding block (6).
8. A waterproofing method for roof expansion joints according to claim 7, characterized in that: A plug connector (31) is provided on one side of the water receiving box (3) close to the sliding block (6); a plug slot (61) matched with the plug connector (31) is provided on the sliding block (6); a receiving slot (62) is provided on one side of the plug slot (61); a clamping block (63) is provided in the receiving slot (62); a clamping slot (311) matched with the clamping block (63) is provided on the plug connector (31); a compression spring (621) is also provided in the receiving slot (62); one end of the compression spring (621) is fixed to the bottom wall of the receiving slot (62), and the other end is fixed to the clamping block (63).
9. A waterproofing method for roof expansion joints according to claim 8, characterized in that: A traction rope (64) is provided at one end of the clamping block (63) close to the bottom wall of the accommodating groove (62); the sliding block (6) is provided with a through hole (65) for the traction rope (64) to pass through; one end of the traction rope (64) passing through the sliding block (6) is provided with a pull ring (66) for the long rod member to pass through; and the sliding block (6) is provided with a side ear (67) for hooking the long rod member.
10. A waterproofing method for roof expansion joints according to claim 9, characterized in that: The second water retaining wall (5) is provided with a fixed outer shell (55), an upper sealing strip (551) and a lower sealing strip (552) are provided inside the fixed outer shell (55), a sealing gap (553) is formed between the upper sealing strip (551) and the lower sealing strip (552), and a flange on one side of the water receiving box (3) away from the first notch (41) is slidably arranged in the sealing gap (553).