Externally-pasted rubber water-stop belt fixing device and construction method

Abstract

The invention relates to an externally-pasted rubber waterstop fixing device and a construction method. The externally-pasted rubber waterstop fixing device structurally comprises a plurality of supporting frames arranged on the outer side face of a structure end mold, the tops of the supporting frames are flush with the top of the structure end mold, transverse force rods are arranged above the supporting frames, and the transverse force rods and the outer ends of the supporting frames are supported through supporting pieces; a fixed longitudinal beam is arranged below the inner end of the transverse force rod, the fixed longitudinal beam is located above the structure end mold, the transverse force rod is connected with the supporting frame through a connecting piece, a cantilever horizontal force rod is connected to the transverse force rod and extends to the position above the inner side of the structure end mold, a fixed cross beam is arranged below the cantilever horizontal force rod, and the cantilever horizontal force rod is connected with the fixed longitudinal beam. An ejector rod assembly is arranged on the cantilever horizontal force rod, the fixed cross beam makes contact with the lower end of the ejector rod assembly, and a water stop belt pressing formwork is arranged below the fixed longitudinal beam and the fixed cross beam. The device can effectively fix the externally-attached water stop belt, can prevent the water stop groove of the water stop belt from collecting gas, and improves the construction quality of the water stop belt.

Description

Technical Field

[0001] The invention relates to an externally attached waterstop, in particular to an externally attached rubber waterstop fixing device and a construction method. Background Art

[0002] External rubber waterstop is a kind of water-stop structure installed on the outside (water-facing surface) of the concrete deformation joint and settlement joint wall of underground structures. It has the ability to adapt to the expansion and contraction of concrete by the elasticity of the material and the structural form of the waterstop, and is used in the initiation joint, complete shrinkage joint, incomplete shrinkage joint and other parts of the structure. In practical applications, the external rubber waterstop is required to fit tightly with the concrete anchor, and use its water-stopping sealing and elastic tensile deformation characteristics to stop water at the location.

[0003] There are two types of cross-sections of external rubber waterstops, one is EB type (external waterstop with holes in the middle), and the other is EP type (external waterstop without holes in the middle). The construction methods of these two types are the same. Multiple waterstop grooves are set on the contact surface between the waterstop and the concrete for anchoring with the concrete and playing a water-stopping role. The waterstop forms a closed ring on the outside of the structure.

[0004] In the actual construction process, the external rubber waterstop needs to be closed in a ring to achieve the waterstop effect. However, due to the position of the upper part of the ring closure and the concrete structure, the traditional method of first fixing and then pouring is adopted. The waterstop groove is very easy to cause air collection inside the waterstop groove during the concrete pouring process. Grouting sealing is generally adopted. Because the air collection point is hidden and the position is difficult to determine, the grouting sealing point cannot be predicted in advance, resulting in a loose combination between the waterstop and the concrete. At the same time, due to the self-weight and deformation of the rubber waterstop, and the fact that it is mostly located at the end formwork cantilever point, the waterstop is difficult to fix, and it is very easy to cause the waterstop to shift during the concrete pouring and vibration process, resulting in poor construction quality and waterstop effect. Summary of the invention

[0005] The purpose of the present invention is to provide an external rubber waterstop fixing device and a construction method to solve the problems of air collection and loose fixation in the existing external waterstop waterstop trough.

[0006] The present invention is achieved as follows: a device for fixing an external rubber waterstop comprises a plurality of support frames arranged on the outer side surface of a structural end formwork, the top of the support frame is flush with the top of the structural end formwork, a transverse force rod is arranged above the support frame, the transverse force rod and the outer end of the support frame are supported by a support member, a fixed longitudinal beam is arranged below the inner end of the transverse force rod, the fixed longitudinal beam is located above the structural end formwork, the transverse force rod is connected to the support frame through a connecting member, a cantilever horizontal force rod is connected to the transverse force rod, the cantilever horizontal force rod extends to the upper part of the inner side of the structural end formwork, a fixed cross beam is arranged below the cantilever horizontal force rod, a top rod assembly is arranged on the cantilever horizontal force rod, the fixed cross beam is in contact with the lower end of the top rod assembly, and a waterstop compression template is arranged below the fixed longitudinal beam and the fixed cross beam.

[0007] Furthermore, the waterstop compression template includes a fixed template and a movable template that are connected to each other. The fixed template is located below the fixed longitudinal beam and is used to fix the outer part of the rubber waterstop. The movable template is located below the fixed cross beam and is used to fix the inner part of the rubber waterstop. The outer template is a fixed plate-like structure, and the movable template can be rolled up.

[0008] Furthermore, the movable template includes a flexible substrate and a plurality of pressure strips arranged side by side, the cross section of the pressure strip is trapezoidal, the bottom surface of the pressure strip is fixed on the flexible substrate, and the flexible substrate is connected to the bottom surface of the fixed template.

[0009] Furthermore, the support frame includes an oblique support and a supporting beam, the supporting beam is flush with the top surface of the structural end mold, and the oblique support, the supporting beam and the structural end mold form a right triangle.

[0010] Furthermore, the cantilever horizontal force rod and the transverse force rod are connected by fixing bolts.

[0011] Furthermore, the push rod assembly is a bolt that is threaded onto the cantilever force rod, and two nuts are threadedly connected to the bolt, and the two nuts are located on the upper and lower sides of the horizontal force rod.

[0012] The present invention also discloses a construction method for fixing an external rubber waterstop strip, which is implemented based on the above-mentioned external rubber waterstop strip fixing device and includes the following steps.

[0013] a. Install the structural end formwork according to the engineering design requirements.

[0014] b. Set support frames at equal intervals along the length direction on the outer side of the structure end formwork.

[0015] c. Place the external rubber waterstop on the top of the structural end formwork, and place the waterstop compression formwork on top of the external rubber waterstop.

[0016] d. Place a fixed longitudinal beam above the waterstop compression template, the fixed longitudinal beam is located directly above the structure end template, a transverse force rod is placed above the support frame, a support member is placed above the outer end of the support frame to support the transverse force rod, and connecting members are inserted through the support frame and the transverse force rod. The transverse force rod is used to press the fixed longitudinal beam through the connecting member, thereby pressing the outer part of the external rubber waterstop.

[0017] e. Roll up the movable formwork and the inner part of the external rubber waterstop and temporarily fix them, pour concrete on the structure inside the structural end formwork, and vibrate the concrete after it reaches the designed elevation.

[0018] f. Slowly lower the inner part of the external rubber waterstop and the movable formwork, and use a flat vibrator in conjunction with the gradually lowered movable formwork to vibrate the inner part of the external rubber waterstop to gradually discharge the gas in the waterstop groove of the inner part of the external rubber waterstop. At the same time, make the inner part of the rubber waterstop tightly combined with the structural concrete. Stop the vibration construction after the inner part of the external rubber waterstop is vibrated and lowered to the designed elevation.

[0019] g. Place a fixed crossbeam above the movable formwork, connect the cantilever horizontal force rod to the transverse force rod, pass the top rod assembly through the cantilever horizontal force rod, and use the top rod assembly to press the fixed crossbeam, thereby pressing the inner part of the external rubber waterstop.

[0020] Furthermore, after the concrete on the inner side of the structural end form is solidified, the external rubber water stop fixing device and the structural end form are removed, and the construction of the deformation joint and the outer concrete is carried out.

[0021] When the present invention is pouring concrete on the structure inside the structural end mold, the external rubber waterstop fixing device can fix the outer part of the external rubber waterstop, so as to facilitate the vibration and placement of the inner part of the external rubber waterstop, and gradually discharge the gas in the waterstop groove of the inner part of the external rubber waterstop. After the vibration and placement of the inner part of the external rubber waterstop are completed, the inner part of the external rubber waterstop can also be pressed downward by the external rubber waterstop fixing device, so as to ensure the quality of the inner part of the external rubber waterstop and the concrete. When the deformation joint and the outer concrete are poured later, since the inner part of the external rubber waterstop has been fixed, the vibration and placement of the outer part of the external rubber waterstop is convenient to carry out, and the quality is also easy to ensure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the external rubber water stop strip fixing device of the present invention.

[0023] Figure 2 It is a stereoscopic diagram of the external rubber water stop strip fixing device of the present invention.

[0024] Figure 3 It is a structural diagram of the waterstop compression template of the present invention.

[0025] Figure 4 It is a schematic diagram of the inner part of the external rubber water stop belt of the present invention and the movable template before being lowered.

[0026] Figure 5 It is a schematic diagram of the inner part of the external rubber water stop belt and the movable template being slowly lowered.

[0027] In the figure: 1. Structural end formwork; 2. Support frame; 3. Transverse force rod; 4. Support member; 5. Fixed longitudinal beam; 6. Connector; 7. Cantilever horizontal force rod; 8. Fixed crossbeam; 9. Waterstop compression formwork; 10. Top rod assembly; 11. External rubber waterstop; 12. Fixing bolts; 13. Square timber slats; 14. Concrete structure; 2-1. Oblique support; 2-2. Support crossbeam; 9-1. Fixed formwork; 9-2. Movable formwork; 9-3. Flexible substrate. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] like Figure 1 , Figure 2 As shown, the external rubber waterstop fixing device of the present invention has a structure including a support frame 2, a transverse force rod 3, a cantilever horizontal force rod 7, a support member 4, a fixed longitudinal beam 5, a fixed cross beam 8 and a waterstop pressing template 9.

[0031] Among them, the support frame 2 is set up relying on the structural end formwork 1, and the support frame 2 is fixedly set on the outer surface of the structural end formwork 1. The inner surface of the structural end formwork 1 is used for pouring and forming the inner concrete structure 14. The top of the structural end formwork 1 is slightly lower than the top surface of the concrete structure 14. After the external rubber waterstop 11 is placed on the top of the structural end formwork 1, the top surface of the external rubber waterstop 11 is flush with the top surface of the concrete structure 14.

[0032] The structural end mold 1 includes a mold plate and square wooden strips 13 on the outer side of the mold plate.

[0033] Support frames 2 are arranged at intervals along the length direction of the external rubber water stop 11 . The support frames 2 are perpendicular to the side surfaces of the structural formwork. The support frames 2 can be arranged on the square wooden slats 13 of the structural formwork.

[0034] The support frame 2 includes an oblique support 2-1 and a support beam 2-2. The support beam 2-2 is flush with the top surface of the structural end mold 1. The oblique support 2-1, the support beam 2-2 and the structural end mold 1 form a right triangle.

[0035] A transverse force rod 3 is arranged above the support frame 2. The transverse force rod 3 is located directly above the support beam 2-2 and is parallel to the support beam 2-2. A support member 4 is placed between the transverse force rod 3 and the outer end of the support beam 2-2. The outer end of the transverse force rod 3 is supported by the support member 4. A fixed longitudinal beam 5 is arranged below the inner end of the transverse force rod 3. The length direction of the fixed longitudinal beam 5 is consistent with the length direction of the external rubber water stop 11. The fixed longitudinal beam 5 is located above the structural end mold 1. The transverse force rod 3 is connected to the support beam 2-2 through a connector 6. The connector 6 is a screw rod, and the transverse force rod 3 can be pressed down by the screw rod.

[0036] A cantilever horizontal force rod 7 is connected to the transverse force rod 3. The cantilever horizontal force rod 7 is located above the transverse force rod 3 and is parallel to the transverse force rod 3. The cantilever horizontal force rod 7 extends inward to the upper part of the inner side of the structural end mold 1. A fixed cross beam 8 is arranged below the cantilever part of the cantilever horizontal force rod 7. The fixed cross beam 8 is parallel to the cantilever horizontal force rod 7. A top rod assembly 10 is arranged on the cantilever horizontal force rod 7. The fixed cross beam 8 contacts the lower end of the top rod assembly 10.

[0037] The top rod assembly 10 is a screw rod, which is arranged vertically and passes through the cantilever part of the cantilever horizontal force rod 7. Two nuts are screwed on the screw rod. The two nuts are located on the upper and lower sides of the cantilever horizontal force rod 7. The length of the screw rod extending downward is adjusted by the two nuts.

[0038] A waterstop pressing template 9 is provided below the fixed longitudinal beam 5 and the fixed cross beam 8 , and the waterstop pressing template 9 is pressed by the fixed longitudinal beam 5 and the fixed cross beam 8 , and the external rubber waterstop 11 is pressed by the waterstop pressing template 9 .

[0039] Among them, Figure 3 As shown, the waterstop compression template 9 includes a fixed template 9-1 and a movable template 9-2 that are interconnected. The fixed template 9-1 is located below the fixed longitudinal beam 5 and is used to fix the outer part of the rubber waterstop. The movable template 9-2 is located below the fixed crossbeam 8 and is used to fix the inner part of the rubber waterstop. The fixed template 9-1 and the outer part of the external rubber waterstop 11 are located between the fixed longitudinal beam 5 and the supporting crossbeam 2-2, and the fixed template 9-1 and the outer part of the external rubber waterstop 11 are pressed by the fixed longitudinal beam 5. The inner part of the movable template 9-2 and the external rubber waterstop 11 is located below the fixed crossbeam 8, and the inner part of the movable template 9-2 and the external rubber waterstop 11 are pressed downward by the fixed crossbeam 8.

[0040] Among them, the outer template is a fixed plate structure, and the movable template 9-2 can be rolled up.

[0041] The movable template 9-2 includes a flexible substrate 9-3 and a plurality of layering strips arranged side by side. The cross section of the layering strip is a trapezoid. The bottom surface of the layering strip is fixed on the flexible substrate 9-3, and the flexible substrate 9-3 is connected to the bottom surface of the fixed template 9-1. The bevel angle of the layering strip can be 45°. Since the layering strips are connected to each other through the flexible substrate 9-3, the bevels of adjacent layering strips can fit each other, thereby rolling up the movable template 9-2.

[0042] Among them, the material of the flexible substrate 9-3 can be canvas.

[0043] The cantilever horizontal force rod 7 and the transverse force rod 3 are connected by fixing bolts 12 .

[0044] The external rubber waterstop fixing construction method of the present invention is implemented based on the above-mentioned external rubber waterstop fixing device, and includes the following steps.

[0045] a. Install the structural end mold 1 according to the engineering design requirements.

[0046] The inner side surface of the structural end formwork 1 is an inner concrete structure 14 to be poured, and the square wooden slats 13 of the structural end formwork 1 are located on the outer side surface of the structural end formwork 1 .

[0047] b. Support frames 2 are arranged at equal intervals along the length direction on the outer side of the structural end mold 1.

[0048] c. Place the external rubber waterstop 11 on the top of the structural end mold 1, the middle part of the external rubber waterstop 11 is located above the structural end mold 1, the inner part of the external rubber waterstop 11 is located on the inner side of the structural end mold 1, the outer part of the external rubber waterstop 11 is located on the outer side of the structural end mold 1, and place the waterstop compression template 9 above the external rubber waterstop 11.

[0049] d. Place a fixed longitudinal beam 5 above the waterstop compression template 9, the fixed longitudinal beam 5 is located directly above the structural end template 1, place a transverse force rod 3 above the support frame 2, place a support member 4 above the outer end of the support frame 2 to support the transverse force rod 3, and connect the support frame 2 and the transverse force rod 3 through the connecting member 6, so that the transverse force rod 3 is pressed against the fixed longitudinal beam 5, thereby pressing the outer part of the external rubber waterstop 11.

[0050] e. Roll up the movable formwork 9-2 and the inner part of the external rubber water stop 11 and temporarily fix them, pour concrete on the structure inside the structural end formwork 1, and vibrate the concrete after pouring it to the designed elevation.

[0051] f. Slowly lower the inner part of the external rubber waterstop 11 and the movable formwork 9-2, and use a flat vibrator to vibrate the inner part of the external rubber waterstop 11 in conjunction with the gradually lowered movable formwork 9-2, so that the gas in the waterstop groove of the inner part of the external rubber waterstop 11 is gradually discharged, and at the same time, the inner part of the rubber waterstop is tightly combined with the structural concrete. After the inner part of the external rubber waterstop 11 is vibrated and lowered to the designed elevation, the vibration construction is stopped.

[0052] g. Place a fixed crossbeam 8 above the movable formwork 9-2, connect the cantilever horizontal force rod 7 to the transverse force rod 3, pass the top rod assembly 10 through the cantilever horizontal force rod 7, and press the fixed crossbeam 8 through the top rod assembly 10, thereby pressing the inner part of the external rubber waterstop 11.

[0053] After the concrete inside the structural end form 1 solidifies, the external rubber water stop fixing device and the structural end form 1 are removed, and the construction of the deformation joint and the outer concrete is carried out.

[0054] When the present invention is pouring concrete on the structure inside the structural end mold 1, the external rubber waterstop fixing device can fix the outer part of the external rubber waterstop, so as to facilitate the vibration and placement of the inner part of the external rubber waterstop, and gradually discharge the gas in the waterstop groove of the inner part of the external rubber waterstop 11. After the inner part of the external rubber waterstop is vibrated and placed, the inner part of the external rubber waterstop can also be pressed downward by the external rubber waterstop fixing device, thereby ensuring the quality of the inner part of the external rubber waterstop fitting the concrete. When the subsequent external concrete pouring construction is carried out, since the inner part of the external rubber waterstop has been fixed, the vibration and placement of the outer part of the external rubber waterstop is convenient to carry out, and the quality is also easy to ensure.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixing device for an external rubber water stop, characterized in that: It includes a plurality of support frames arranged on the outer side surface of the structure end formwork, the top of the support frame is flush with the top of the structure end formwork, a transverse force rod is arranged above the support frame, the transverse force rod and the outer end of the support frame are supported by a support member, a fixed longitudinal beam is arranged below the inner end of the transverse force rod, the fixed longitudinal beam is located above the structure end formwork, the transverse force rod is connected to the support frame through a connecting member, a cantilever horizontal force rod is connected to the transverse force rod, the cantilever horizontal force rod extends to the upper part of the inner side of the structure end formwork, a fixed cross beam is arranged below the cantilever horizontal force rod, a top rod assembly is arranged on the cantilever horizontal force rod, the fixed cross beam is in contact with the lower end of the top rod assembly, and a waterstop is arranged below the fixed longitudinal beam and the fixed cross beam to compress the formwork.

2. The external rubber water stop strip fixing device according to claim 1 is characterized in that: The waterstop compression template includes a fixed template and a movable template that are connected to each other. The fixed template is located below the fixed longitudinal beam and is used to fix the outer part of the rubber waterstop. The movable template is located below the fixed cross beam and is used to fix the inner part of the rubber waterstop. The outer template is a fixed plate structure, and the movable template can be rolled up.

3. The external rubber water stop strip fixing device according to claim 2 is characterized in that: The movable template comprises a flexible substrate and a plurality of pressure strips arranged side by side, the cross section of the pressure strip is trapezoidal, the bottom surface of the pressure strip is fixed on the flexible substrate, and the flexible substrate is connected to the bottom surface of the fixed template.

4. The external rubber water stop strip fixing device according to claim 1 is characterized in that: The support frame includes an oblique support and a supporting crossbeam, wherein the supporting crossbeam is flush with the top surface of the structural end mold, and the oblique support, the supporting crossbeam and the structural end mold form a right triangle.

5. The external rubber water stop strip fixing device according to claim 1 is characterized in that: The cantilever horizontal force rod and the transverse force rod are connected by fixing bolts.

6. The external rubber water stop strip fixing device according to claim 1 is characterized in that: The push rod assembly is a bolt that is threaded onto the cantilever force rod, and two nuts are threadedly connected to the bolt. The two nuts are located at the upper and lower sides of the horizontal force rod.

7. A method for fixing an external rubber waterstop strip, which is implemented based on the external rubber waterstop strip fixing device according to any one of claims 1 to 6, characterized in that: The following steps are involved: a. Install the structural end mold according to the engineering design requirements; b. Support frames are arranged at equal intervals along the length direction on the outer side of the structural end form; c. Place the external rubber waterstop on the top of the structural end formwork, and place the waterstop on top of the external rubber waterstop to press the formwork; d. Place a fixed longitudinal beam above the waterstop compression template, the fixed longitudinal beam is located directly above the structural end formwork, a transverse force rod is placed above the support frame, a support member is placed above the outer end of the support frame to support the transverse force rod, and a connecting member is inserted through the support frame and the transverse force rod, so that the transverse force rod presses the fixed longitudinal beam through the connecting member, thereby pressing the outer part of the external rubber waterstop; e. Roll up the movable formwork and the inner part of the external rubber water stop and temporarily fix them, pour concrete on the structure inside the end formwork, and vibrate the concrete after pouring it to the designed elevation; f. Slowly lower the inner part of the external rubber waterstop and the movable formwork, and use a flat vibrator in conjunction with the gradually lowered movable formwork to vibrate the inner part of the external rubber waterstop, gradually discharge the gas in the water stop groove of the inner part of the external rubber waterstop, and at the same time make the inner part of the rubber waterstop closely combined with the structural concrete. After the inner part of the external rubber waterstop is vibrated and lowered to the designed elevation, stop the vibration construction; g. Place a fixed crossbeam above the movable formwork, connect the cantilever horizontal force rod to the transverse force rod, pass the top rod assembly through the cantilever horizontal force rod, and use the top rod assembly to press the fixed crossbeam, thereby pressing the inner part of the external rubber waterstop.

8. The method for fixing the external rubber waterstop according to claim 7 is characterized in that: After the concrete on the inner side of the structural end formwork solidifies, remove the external rubber waterstop fixing device and the structural end formwork, and proceed with the construction of the expansion joint and the outer concrete.

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