A method for sealing the end of a fixed template and a secondary lining trolley for a rubber waterstop

Abstract

The present invention discloses a fixing template for a rubber waterstop, comprising a first fixing member and a second fixing member; the first fixing member is in a rectangular structure, and a plurality of slots are provided on one end face of the first fixing member; a waterstop slot for installing the waterstop is provided on one end face of the second fixing member, and a plurality of blocks capable of snapping together with the slots are provided on the other end face of the second fixing member. The present invention also discloses a method for sealing the end of a second lining trolley. In the present invention, a waterstop slot for installing the waterstop is provided in the second fixing member, and the second fixing member is connected to the first fixing member by snapping. Compared with the existing method of fixing the waterstop with rectangular steel bars, lining steel bars, and steel bar clips, the present application reduces the number of auxiliary steel bars within the lining range, enhances the density of concrete near the waterstop, and simplifies the fixing process of the waterstop.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a fixed template for a rubber waterstop and a method for sealing the end of a secondary lining trolley. Background Art

[0002] Tunnel waterproofing mainly blocks the hydraulic connection path inside and outside the lining by combining concrete self-waterproofing with waterproofing at nodes such as lining joints. Among them, waterproofing at the construction lining joint nodes is the focus of tunnel waterproofing.

[0003] At present, the lining joints are mainly waterproofed by combining back-sticking waterstop and embedded waterstop. Figure 1 As shown, when the embedded waterstop is installed and fixed, it is first necessary to tie rectangular stirrups on the four lining steel bars adjacent to the waterstop, weld the rectangular stirrups to the steel bar clips of the waterstop, and install the waterstop in the slot of the steel bar clip. After the slot of the steel bar clip and the waterstop are bent 90°, the formwork port is sealed with pine boards and headboards, thereby achieving waterproof sealing of the secondary lining concrete space to be poured.

[0004] However, since rectangular stirrups, lining steel bars and steel bar clips are needed to fix the horizontal section of the waterstop, more auxiliary steel bars are required for fixation and the fixing process is more complicated. At the same time, since there are more steel bars near the waterstop, it is easy to cause the concrete at the waterproof node to be loose, and the risk of water seepage in the later stage increases.

[0005] Based on this, the present application proposes a fixed template for a rubber waterstop. When the fixed template is used to fix the waterstop, the use of auxiliary steel bars is reduced and the fixing process is simplified. At the same time, a method for sealing the end of a second lining trolley is proposed, in which the waterstop is fixed by using a fixed template for the rubber waterstop. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a fixed template for a rubber waterstop and a method for sealing the end of a second lining trolley.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A fixed template for a rubber waterstop, comprising a first fixing member and a second fixing member;

[0009] The first fixing member is a rectangular structure, and a plurality of slots are provided on one end surface of the first fixing member;

[0010] A waterstop slot for installing the waterstop is provided on one end surface of the second fixing member, and a plurality of clamping blocks that can be snap-fitted with the slot are provided on the other end surface of the second fixing member.

[0011] Preferably, the second fixing member includes a fixing plate 1 and a fixing plate 2 arranged up and down;

[0012] The top of the fixing plate 1 and the bottom of the fixing plate 2 are vertically provided with symmetrical L-shaped end plates for forming water stop grooves;

[0013] The first and second fixing plates are fixedly connected by fixing steel bars; when the middle portion of the fixing steel bars is vertically bent, the first and second fixing plates can be in a 90° vertical structure;

[0014] The clamping block is arranged on the end surface of the first fixing plate.

[0015] Preferably, the fixed steel bars are rectangular.

[0016] Preferably, a plurality of slot units are evenly arranged on one side end surface of the first fixing member along the height direction, and each slot unit includes a plurality of slots that can be snap-fitted with corresponding blocks on the second fixing member.

[0017] Preferably, L-shaped protrusions are symmetrically provided at both ends of the width of the first fixing member, and a limiting groove is formed between the two L-shaped protrusions and the end surface of the first fixing member;

[0018] The width m of the limiting groove is consistent with the width m1 of the fixing plate 1, and the width m1 of the fixing plate 1 is consistent with the width m2 of the fixing plate 2.

[0019] The present invention also provides a method for sealing the end of a secondary lining trolley.

[0020] A method for sealing the end of a secondary lining trolley is implemented using a fixed template based on a rubber waterstop, comprising the following steps:

[0021] Step 1: Install several second fixings on the waterstop;

[0022] Step 2: Bend the middle of the second fixing piece vertically to make the waterstop have a 90° bend structure;

[0023] Step 3: According to the designed installation position of the waterstop, snap-fit ​​the clamping block on the second fixing member to the corresponding clamping groove on the first fixing member to form a template assembly with the waterstop installed;

[0024] Step 4: An arc angle iron with a right-angled radial cross section is fixedly installed on the front side of the end of the secondary lining trolley;

[0025] Step 5: Expand the waterstop in the formwork assembly in step 3 according to the curved structure of the tunnel, and assemble the formwork assembly to the end of the secondary lining trolley; the top end of the first fixing member in the formwork assembly presses against the back-attached waterstop at the bottom end of the initial support, the lower end of the first fixing member in the formwork assembly is located between the curved angle iron and the end of the secondary lining trolley, and the waterstop is located in the space where the secondary lining concrete is to be poured;

[0026] Step 6: Sealing a wooden formwork between the end of the secondary lining trolley, the back-sticking waterstop, and two adjacent first fixing members in the formwork assembly to seal the space for pouring concrete in the secondary lining;

[0027] Step 7: Set up several supporting formwork along the curved structure of the tunnel on the end face of the wooden formwork facing away from the space where the secondary lining concrete will be poured. The top of the supporting formwork is fixedly connected to the back-attached waterstop at the bottom of the primary support, and the bottom of the supporting formwork is located between the curved angle iron and the end of the secondary lining trolley.

[0028] The supporting formwork adopts a first fixing member;

[0029] Step 8: Place water blocking material between the end of the secondary lining trolley and the first fixing piece;

[0030] Step 9: Wedge a fastener between the curved angle steel and the first fixing member;

[0031] Step 10: Support steel bars are welded between the upper portion of each first fixing member and the top end of the arc-shaped angle steel.

[0032] Preferably, in step 8, the water blocking material is a waterproof cotton strip.

[0033] Preferably, in step 9, the top surface of the fastener is an inclined surface to form a wedge-shaped structure.

[0034] The beneficial effects of the present invention are:

[0035] (1) In the present invention, a waterstop slot for installing the waterstop is provided in the second fixing member, and the second fixing member is connected to the first fixing member by a snap-fit ​​method. Compared with the existing method of fixing the waterstop using rectangular steel bars, lining steel bars, and steel bar clips, the present application reduces the number of auxiliary steel bars in the lining range, enhances the density of concrete near the waterstop, and simplifies the fixing process of the waterstop.

[0036] (2) The snap-fit ​​connection between the first fixing member and the second fixing member and the design of providing a plurality of slot units along the height direction in the first fixing member in the present invention can adjust the installation position of the second fixing member on the first fixing member, thereby adjusting the installation height of the waterstop. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0038] Figure 1 This is a schematic diagram of the embedded installation and fixation of the water stop belt in the background art;

[0039] Figure 2 This is a schematic structural diagram of a fixed template for a rubber waterstop according to the present invention;

[0040] Figure 3 2. It is a schematic top view of the structure of the fixed template for the rubber waterstop of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the first fixing member in the present invention;

[0042] Figure 5 is a schematic side view of the structure of the first fixing member in the present invention;

[0043] Figure 6 yes Figure 4 AA sectional view;

[0044] Figure 7 This is a schematic front view of the structure of the second fixing member in the present invention;

[0045] Figure 8 is a schematic side view of the structure of the second fixing member in the present invention;

[0046] Figure 9 This is a schematic diagram of the cooperation between the second fixing member and the water stop in the present invention;

[0047] Figure 10 This is a schematic structural diagram of the second fixing member and the water stop strip in the present invention after being bent after being matched;

[0048] Figure 11 This is a schematic diagram of the coordination between the end of the secondary lining trolley and the arc angle steel;

[0049] Figure 12 This is a schematic diagram of the end face of the secondary lining trolley after the end is sealed;

[0050] Figure 13 yes Figure 12 Cross-sectional end view at the middle BB;

[0051] Figure 14 yes Figure 12 Cross-sectional end view at CC;

[0052] in:

[0053] 0-waterstop;

[0054] 1-first fixing member, 11-slot unit, 12-slot, 13-L-shaped protrusion;

[0055] 2-second fixing piece, 21-waterstop slot, 22-block, 23-fixing plate 1, 24-fixing plate 2, 25-L-shaped end plate, 26-fixing steel bar;

[0056] 3-Arc angle steel, 4-Connecting steel bars, 5-Waterproof cotton strips, 6-Fasteners, 7-Supporting steel bars, 8-Wooden formwork, 9-Supporting formwork. DETAILED DESCRIPTION

[0057] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0059] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", and "top" are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0060] In the present invention, terms such as "connected" and "connection" should be interpreted broadly to mean a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediary. Relevant researchers or technicians in this field may determine the specific meanings of these terms in the present invention based on specific circumstances, and they should not be construed as limitations on the present invention.

[0061] The present invention will be further described below with reference to the accompanying drawings and examples.

[0062] Example 1:

[0063] like Figure 2-3 As shown, a fixing template for a rubber waterstop comprises a first fixing member 1 and a second fixing member 2;

[0064] The first fixing member 1 is a rectangular structure, and a plurality of slots 12 are provided on one end surface of the first fixing member 1;

[0065] A waterstop slot 21 for mounting the waterstop 0 is provided on one end surface of the second fixing member 2, and a plurality of clamping blocks 22 capable of snapping into engagement with the clamping slot 12 are provided on the other end surface of the second fixing member 2;

[0066] Preferably, Figure 7-8 As shown, the second fixing member 2 includes a fixing plate 1 23 and a fixing plate 24 arranged up and down;

[0067] The top of the fixing plate 1 23 and the bottom of the fixing plate 2 24 are vertically provided with symmetrical L-shaped end plates 25 for forming the water stop slot 21; wherein, the structure of the water stop 0 installed in the water stop slot 21 is shown as follows Figure 9 As shown;

[0068] The fixing plate 1 23 and the fixing plate 24 are fixedly connected by fixing steel bars 26; when the middle portion of the fixing steel bars 26 is vertically bent, the fixing plates 1 23 and the fixing plates 2 24 can be in a 90° vertical structure, such as Figure 10 As shown;

[0069] The clamping block 22 is arranged on the end surface of the fixing plate 1 23 .

[0070] The second fixing member 2 is made of PVC hard plastic board.

[0071] Preferably, the fixing steel bars 26 are rectangular.

[0072] Preferably, Figure 4-6 As shown, a plurality of slot units 11 are evenly arranged along the height direction on one end surface of the first fixing member 1. Each slot unit 11 includes a plurality of slots 12 that can be snap-fitted with corresponding blocks 22 on the second fixing member 1. Specifically, each slot unit 11 includes four slots 12, and four blocks 22 are arranged on the other end surface of the second fixing member 2.

[0073] The first fixing plate 1 is made of steel, which enhances the strength of the template.

[0074] Preferably, Figure 4 As shown, L-shaped protrusions 13 are symmetrically provided at both ends of the width of the first fixing member 1, and a limiting groove is formed between the two L-shaped protrusions 13 and the end surface of the first fixing member 1;

[0075] The width m of the limiting groove is consistent with the width m1 of the fixing plate 1 23 , and the width m1 of the fixing plate 1 23 is consistent with the width m2 of the fixing plate 24 .

[0076] The limiting groove in the present application is provided to fix the side surface of the second fixing member 2 .

[0077] Example 2:

[0078] A method for sealing the end of a secondary lining trolley, based on the rubber waterstop in Example 1 and implemented with a fixed template, comprises the following steps:

[0079] Step 1: Install several second fixing members 2 on the waterstop 0;

[0080] During installation, insert the waterstop 0 into the waterstop slot 21 of the second fixing member 2, and arrange several second fixing members 2 as evenly as possible;

[0081] Step 2: Bend the middle of the second fixing member 2 vertically so that the waterstop 0 is bent at 90°;

[0082] The bending of the second fixing member 2 can be achieved by manually bending and fixing the steel bar 26;

[0083] Step 3: According to the designed installation position of the waterstop 0, the clamping block 22 on the second fixing member 2 is snap-connected with the corresponding clamping groove 12 on the first fixing member 1, thereby forming a template assembly with the waterstop 0 installed;

[0084] The snap-fit ​​connection between the first fixing member 1 and the second fixing member 2 and the design of providing a plurality of slot units 11 in the height direction of the first fixing member 1 in the present application enable adjustment of the installation position of the second fixing member 2 on the first fixing member 1, thereby achieving adjustment of the installation height of the waterstop 0; during installation, the fixing plate 1 23 is inserted from the bottom end of the limiting groove in the first fixing member and moved upward, and after reaching the designed installation height, the clamping block 22 on the fixing plate 1 23 is clamped into the corresponding clamping slot 12;

[0085] Step 4: Fix an arc angle iron 3 with a right-angled structure in radial cross section on the front side of the end of the secondary lining trolley, as shown in FIG. Figure 11 As shown;

[0086] Specifically, the arc angle iron 3 is welded to the end of the secondary lining trolley through a number of connecting steel bars 4 distributed along the direction of the tunnel arc structure;

[0087] Step 5: Expand the water stop in the formwork assembly in step 3 according to the arc structure of the tunnel, and assemble the formwork assembly to the end of the secondary lining trolley; Figure 12 As shown, the top end of the first fixing member 1 in the formwork assembly is pressed against the back-sticking waterstop at the bottom end of the initial support, the lower end of the first fixing member 1 in the formwork assembly is located between the arc angle iron 3 and the end of the secondary lining trolley, and the waterstop 0 is located in the space where the secondary lining concrete is to be poured;

[0088] Step 6: Figure 12As shown, a wooden formwork 8 is sealed between the end of the secondary lining trolley, the back-sticking waterstop and the two adjacent first fixing members 1 in the formwork assembly to achieve the blocking of the space for pouring concrete for the secondary lining; wherein the waterstop 0 is located in the space for pouring concrete for the secondary lining;

[0089] Step 7: Several support formworks 9 are set up along the curved structure of the tunnel on the end face of the wooden formwork 8 facing away from the space for pouring concrete in the secondary lining. The top of the support formwork 9 is fixedly connected to the back-attached waterstop at the bottom of the initial support, and the bottom end of the support formwork 9 is located between the curved angle iron 3 and the end of the secondary lining trolley. When pouring concrete in the space for pouring concrete in the secondary lining, the support formwork 9 supports the wooden formwork 8, thereby improving the sealing strength.

[0090] Specifically, two supporting templates 9 are provided on the end surface of each wooden template 8, and the supporting templates 9 adopt the first fixing member 1;

[0091] At the same time, each connecting steel bar 4 is located between corresponding adjacent first fixing members 1;

[0092] Step 8: Figure 13 、 14 As shown, a water blocking material is provided between the end of the secondary lining trolley and the first fixing member 1;

[0093] Step 9: Wedge the fastener 6 between the arc-shaped angle steel 3 and the first fixing member 1;

[0094] Step 10: Support steel bars 7 are welded between the upper portion of each first fixing member 1 and the top end of the arc-shaped angle steel 3 .

[0095] Preferably, in step 8, the water blocking material is waterproof cotton strips 5, wherein the space between the end of the second lining trolley and the first fixing member 1 is an arc-shaped space, and waterproof cotton strips 5 are arranged in the space.

[0096] Preferably, in step 9, the top surface of the fastener 6 is an inclined surface to form a wedge-shaped structure.

[0097] In the present application, the first fixing member 1 is prefabricated in a factory, and the waste material of the first fixing member 1 is processed into the fastener 6, that is, the fastener 6 and the first fixing member 1 adopt the same structure, except that the height of the finally formed fastener 6 is smaller than the height of the first fixing member 1 and the top surface of the fastener 6 is an inclined structure.

[0098] In this application, the second fixing member 2 is provided with a waterstop slot 21 for installing the waterstop 0. The second fixing member 2 is connected to the first fixing member 2 by a snap-fit ​​method. The first fixing member 1 is effectively fixed to the end of the second lining trolley by means of arc angle steel 3, fastener 6, and supporting steel bar 7. At the same time, combined with the wooden formwork 8, an effective second lining trolley end support and sealing system is formed; compared with the existing method of using rectangular steel bars, lining steel bars, and steel bar clips to fix the waterstop, this application reduces the number of auxiliary steel bars in the lining range, enhances the concrete density near the waterstop, and simplifies the fixing process of the waterstop.

[0099] At the same time, in the present application, the first fixing member 1 and the second fixing member 2 are all prefabricated in the factory and only require simple processing and installation on site, which is a simple process.

[0100] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not a limitation of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. A fixed template for a rubber waterstop, characterized in that: comprising a first fixing member and a second fixing member; The first fixing member is a rectangular structure, and a plurality of slots are provided on one end surface of the first fixing member; A waterstop slot for mounting the waterstop is provided on one end surface of the second fixing member, and a plurality of clamping blocks capable of snapping into engagement with the slot are provided on the other end surface of the second fixing member; The second fixing member includes a fixing plate 1 and a fixing plate 2 arranged up and down; The top of the fixing plate 1 and the bottom of the fixing plate 2 are vertically provided with symmetrical L-shaped end plates for forming water stop grooves; The first and second fixing plates are fixedly connected by fixing steel bars; when the middle portion of the fixing steel bars is vertically bent, the first and second fixing plates can be in a 90° vertical structure; The clamping block is arranged on the end surface of the fixing plate 1; A plurality of slot units are evenly arranged on one end surface of the first fixing member along the height direction, and each slot unit includes a plurality of slots that can be snap-fitted with corresponding blocks on the second fixing member; L-shaped protrusions are symmetrically provided at both ends of the width of the first fixing member, and a limiting groove is formed between the two L-shaped protrusions and the end surface of the first fixing member; The width m of the limiting groove is consistent with the width m1 of the fixing plate 1, and the width m1 of the fixing plate 1 is consistent with the width m2 of the fixing plate 2.

2. The fixed formwork for the rubber waterstop according to claim 1, characterized in that: The fixed steel bar is rectangular.

3. A method for sealing the end of a secondary lining trolley, based on the rubber waterstop according to any one of claims 1 to 2 using a fixed template, comprising the following steps: Step 1: Install several second fixings on the waterstop; Step 2: Bend the middle of the second fixing piece vertically to make the waterstop have a 90° bend structure; Step 3: According to the designed installation position of the waterstop, snap-fit ​​the clamping block on the second fixing member to the corresponding clamping groove on the first fixing member to form a template assembly with the waterstop installed; Step 4: An arc angle iron with a right-angled radial cross section is fixedly installed on the front side of the end of the secondary lining trolley; Step 5: Expand the waterstop in the formwork assembly in step 3 according to the curved structure of the tunnel, and assemble the formwork assembly to the end of the secondary lining trolley; the top end of the first fixing member in the formwork assembly presses against the back-attached waterstop at the bottom end of the initial support, the lower end of the first fixing member in the formwork assembly is located between the curved angle iron and the end of the secondary lining trolley, and the waterstop is located in the space where the secondary lining concrete is to be poured; Step 6: Sealing a wooden formwork between the end of the secondary lining trolley, the back-sticking waterstop, and two adjacent first fixing members in the formwork assembly to seal the space for pouring concrete in the secondary lining; Step 7: Set up several supporting formwork along the curved structure of the tunnel on the end face of the wooden formwork facing away from the space where the secondary lining concrete will be poured. The top of the supporting formwork is fixedly connected to the back-attached waterstop at the bottom of the primary support, and the bottom of the supporting formwork is located between the curved angle iron and the end of the secondary lining trolley. The supporting formwork adopts a first fixing member; Step 8: Place water blocking material between the end of the secondary lining trolley and the first fixing piece; Step 9: Wedge a fastener between the curved angle steel and the first fixing member; Step 10: Support steel bars are welded between the upper portion of each first fixing member and the top end of the arc-shaped angle steel.

4. The method for sealing the end of the secondary lining trolley according to claim 3, characterized in that: In step 8, the water blocking material is a waterproof cotton strip.

5. The method for sealing the end of the secondary lining trolley according to claim 3, characterized in that: In step 9, the top surface of the fastener is inclined to form a wedge-shaped structure.

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