Embedded waterstop installation structure

Abstract

The utility model relates to tunnel construction technical field provides a kind of middle buried type waterstop installation structure, comprising: formwork system, with initial support to form secondary lining to be poured area;The formwork system includes the head stop plate in the secondary lining to be poured area one side, the through-hole of the head stop plate is equipped with along the secondary lining to be poured area extension direction;Waterstop, including the first side and second side along width direction, the first side is by the through-hole and extends into the secondary lining to be poured area, the second side is located in the secondary lining to be poured area outside;Positioning structure is suitable for the second side clamping positioning on the head stop plate.Such setting, can effectively avoid waterstop local deformation, tear, fracture, be lead wire or steel wire puncture and so on Problem, to ensure that the integrity of waterstop structure and the accuracy of position in fixed and concrete pouring process, to improve waterstop effect.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to an embedded waterstop installation structure. Background Technology

[0002] With the acceleration of urbanization and the continuous improvement of transportation infrastructure, tunnel engineering plays an increasingly important role in modern transportation networks. As a vital transportation hub connecting different regions, tunnels occupy an irreplaceable position in modern urban planning. During tunnel construction, due to construction techniques, technical requirements, or practical operational needs, joints need to be made at specific locations. Structural joints are weak points in the tunnel structure and are prone to becoming channels for water leakage. Therefore, waterproofing at tunnel structural joints is crucial to ensuring the long-term stable operation of the tunnel.

[0003] Embedded waterstops are core waterproofing components in concrete structures used to prevent water leakage through structural joints. They form a continuous sealing barrier by integrating with the poured concrete, thus achieving a water-stopping effect. During concrete pouring, the embedded waterstops need to be fixed. Traditionally, this is achieved by welding additional reinforcing bars, using angle steel brackets, or binding the edges of the waterstop to the reinforcing bars or formwork with galvanized lead wire or steel wire.

[0004] However, using the above-mentioned fixing methods can easily lead to local deformation, tearing, breakage or puncture of the waterstop, making it difficult to ensure the integrity of the waterstop structure and the accuracy of its position, thus affecting the waterstopping effect.

[0005] Therefore, ensuring the integrity of the waterstop structure and the accuracy of its position to guarantee the waterstop effect has become an important issue that urgently needs to be addressed. Utility Model Content

[0006] This utility model provides an embedded waterstop installation structure to solve the defect that the waterstop effect of the existing technology is difficult to guarantee. It can ensure the structural integrity and positional accuracy of the waterstop during the fixing and concrete pouring process, thereby improving the waterstop effect.

[0007] This utility model provides a centrally embedded waterstop installation structure, including: The formwork system, together with the initial support, forms a secondary lining waiting area; the formwork system includes a head plate located on one side of the secondary lining waiting area, and the head plate is provided with through holes along the length direction of the secondary lining waiting area; The waterstop includes a first side and a second side along the width direction, the first side extending into the secondary lining waiting area through the through hole, and the second side located outside the secondary lining waiting area. The positioning structure is suitable for clamping and positioning the second side on the stop plate.

[0008] According to the present invention, an embedded waterstop installation structure is provided, wherein the positioning structure includes: A pair of clamping parts are provided opposite to each other, and the pair of clamping parts are adapted to clamp the two sides of the second side along the thickness direction respectively; A connector suitable for fixing the clamping part to the head plate.

[0009] According to the present invention, an embedded waterstop installation structure also includes stiffening ribs. The stiffening ribs are pressed and fixed to the pair of clamping portions on the opposite side of the end plate.

[0010] According to the embedded waterstop installation structure provided by this utility model, the stiffening rib, the clamping part and the end plate are fixedly connected by the connector.

[0011] According to the present invention, an embedded waterstop installation structure is provided, wherein the clamping part includes a supporting square timber.

[0012] According to the present invention, an embedded waterstop installation structure is provided, wherein the connecting component includes bolts; The bolt passes through the end plate, the clamping part and the stiffening rib in sequence and is then locked by a nut.

[0013] According to the present invention, an embedded waterstop installation structure is provided, wherein the waterstop includes: The main body is laid along the length of the secondary lining area to be poured; A deformation hole is provided in the main body, and the hole wall protrudes from one side of the main body along the thickness direction. The deformation hole is located between the first side and the second side.

[0014] According to the present invention, an embedded waterstop installation structure is provided, wherein the through hole is located in the middle of the baffle plate, and the deformable hole corresponds to the position of the through hole.

[0015] According to the embedded waterstop installation structure provided by this utility model, the side of the initial support facing the secondary lining to be poured is covered with a waterproof layer.

[0016] According to the present invention, an embedded waterstop installation structure is provided, wherein the waterproof layer comprises: a geotextile nonwoven fabric laid on the initial support, and a waterproof board laid on the geotextile nonwoven fabric.

[0017] The embedded waterstop installation structure provided by this utility model allows the first side of the waterstop to extend into the secondary lining area through a through hole in the end plate, while the second side remains outside the secondary lining area. The positioning structure uses a clamping method to position the second side of the waterstop on the end plate, thus achieving waterstop positioning. Compared to existing methods of fixing with angle steel brackets and binding with galvanized lead wire or steel wire, this effectively avoids problems such as local deformation, tearing, breakage, and puncture by lead wire or steel wire, ensuring the structural integrity and positional accuracy of the waterstop during fixing and concrete pouring, thereby improving the waterstop effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of the embedded waterstop installation structure provided in this utility model embodiment.

[0020] Figure 2 This is the second structural schematic diagram of the embedded waterstop installation structure provided in this embodiment of the utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the waterstop provided in this embodiment of the utility model.

[0022] Figure label: 10. Formwork system; 100. End plate; 101. Through hole; 11. Waterstop; 110. Main body; 111. Deformation hole; 112. Self-adhesive layer; 12. Positioning structure; 120. Clamping part; 121. Connector; 122. Stiffening rib; 13. Secondary lining waiting area; 14. Secondary lining; 15. Waterproof layer; 150. Geotextile nonwoven fabric; 151. Waterproof membrane; 20. Initial support. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] To better understand the embedded waterstop installation structure provided in this utility model embodiment, its application background is first introduced. During tunnel construction, due to construction technology, technical requirements, or actual operational needs, it is often necessary to reserve structural joints, such as expansion joints and construction joints, at specific locations. Structural joints are weak parts in tunnels and are prone to becoming channels for water leakage. Therefore, the waterproofing problem at tunnel structural joints is crucial to ensuring the long-term stable operation of tunnels.

[0025] Embedded waterstops are core waterproofing components in concrete structures used to prevent water leakage through structural joints. They form a continuous sealing barrier by integrating with the poured concrete, thus achieving a water-stopping effect. During concrete pouring, the embedded waterstops need to be fixed. Traditionally, this is achieved by welding additional reinforcing bars, using angle steel brackets, or binding the edges of the waterstop to the reinforcing bars or formwork with galvanized lead wire or steel wire.

[0026] However, the above-mentioned fixing methods are prone to local deformation, tearing, breakage or puncture of the waterstop, making it difficult to ensure the integrity of the waterstop structure and the accuracy of its position, thus affecting the waterstopping effect.

[0027] Therefore, ensuring the integrity of the waterstop structure and the accuracy of its position to guarantee the waterstop effect has become an important issue that urgently needs to be addressed.

[0028] Against the above background, this utility model embodiment provides an embedded waterstop installation structure that can ensure the integrity of the structure and the accuracy of the position of the waterstop during fixing and concrete pouring, thereby improving the waterstop effect.

[0029] The following is combined with Figures 1-3 This invention describes the installation structure of the embedded waterstop strip.

[0030] Reference Figure 1 and Figure 2 An embedded waterstop installation structure includes a template system 10, a waterstop 11, and a positioning structure 12. The template system 10 and the initial support 20 form a secondary lining waiting area 13. Concrete is poured into the secondary lining waiting area 13 to form the secondary lining 14 of the tunnel. The template system 10 includes a stop plate 100 located on one side of the secondary lining waiting area 13. The stop plate 100 has through holes 101 along the length of the secondary lining waiting area 13. The waterstop 11 includes a first side and a second side along the width direction. The first side extends into the secondary lining waiting area 13 through the through holes 101 on the stop plate 101, and the second side is located outside the secondary lining waiting area 13. The positioning structure 12 is used to clamp and position the second side of the waterstop 11 on the stop plate 100.

[0031] In actual construction, the secondary lining waiting area 13 is enclosed by the formwork system 10 and the initial support 20. The secondary lining 14 of the tunnel can be formed by pouring concrete into the secondary lining waiting area 13. The position of the end plate 100 on one side of the secondary lining waiting area 13 is the location of the structural joint after pouring, which is also the location of the waterstop 11. When arranging the waterstop 11, the first side of the waterstop 11 is inserted into the secondary lining waiting area 13 through the through hole 101 on the end plate 100, while the second side is still located outside the secondary lining waiting area 13. The positioning structure 12 uses a clamping method to position the second side of the waterstop 11 on the end plate 100, thereby realizing the positioning of the waterstop 11. Compared to existing methods of fixing with angle steel brackets and binding with galvanized lead wire or steel wire, this method can effectively avoid problems such as local deformation, tearing, breakage, or puncture by lead wire or steel wire of the waterstop 11. This ensures the structural integrity and positional accuracy of the waterstop 11 during fixing and concrete pouring, thereby improving the water-stopping effect.

[0032] It should be noted here that the initial support 20 refers to the support structure constructed immediately after tunnel excavation, used to control the deformation of the surrounding rock and ensure construction safety. The structural form of the initial support 20 is generally shotcrete. The secondary lining 14 refers to the permanent lining constructed after the initial support 20 has stabilized, used to provide a structure that provides long-term load-bearing capacity, waterproofing, durability, and adaptability to operational needs.

[0033] In one embodiment of this utility model, a waterproof layer 15 is laid on the side of the initial support 20 facing the secondary lining waiting area 13, so as to form a continuous waterproof barrier between the initial support 20 and the secondary lining 14 after the secondary lining 14 is poured, so as to prevent water from seeping into the tunnel.

[0034] Specifically, the waterproof layer 15 includes a geotextile 150 and a waterproof membrane 151; the geotextile 150 is laid on the initial support 20, and the waterproof membrane 151 is laid on the geotextile 150. The geotextile 150 can prevent the waterproof membrane 151 from directly contacting the initial support 20, protecting the waterproof membrane 151 from damage, and reducing the accumulation of water vapor in the structure. The waterproof membrane 151 can be made of materials such as high-density polyethylene (HDPE) and polyvinyl chloride (PVC), which have excellent impermeability and prevent water from penetrating into the interior of the secondary lining 14.

[0035] After the waterproof layer 15 is laid, the secondary lining 14 is constructed. First, the formwork system 10 and the initial support 20 are used to enclose the secondary lining waiting area 13, and then concrete is poured into the secondary lining waiting area 13 to form the secondary lining 14. The specific structural form of the formwork system 10 can refer to the existing formwork trolley, which will not be described in detail in this embodiment. The end plate 100 is the end closing structure of the formwork trolley and is also the boundary of the adjacent secondary lining 14, that is, the part where the circumferential structural joint is formed. After the secondary lining waiting area 13 is constructed, the waterstop 11 is fixed. When installing the waterstop 11, the first side of the waterstop 11 is inserted into the secondary lining waiting area 13 through the through hole 101, and then the positioning structure 12 is used to position the waterstop 11.

[0036] In one embodiment of this utility model, the positioning structure 12 includes a clamping part 120 and a connecting member 121; wherein, a pair of clamping parts 120 are arranged opposite each other, and the pair of clamping parts 120 are suitable for clamping the two sides of the second side of the waterstop 11 along the thickness direction respectively; the connecting member 121 is suitable for fixing the clamping part 120 and the end plate 100. In this way, the waterstop 11 is clamped and fixed on the end plate 100.

[0037] The specific specifications of the clamping part 120 and the connector 121 can be configured according to the actual construction scenario, and no specific limitations are imposed in this embodiment of the utility model.

[0038] The specific material of the clamping part 120 can be selected according to actual needs. In this embodiment, the clamping part 120 adopts supporting square timber. Relatively speaking, the supporting square timber has a simple structure, low cost, and is easy to obtain. In addition, the wood is relatively soft, which can minimize the indentation or damage to the surface of the waterstop 11 while achieving stable clamping.

[0039] In one embodiment of this utility model, the connecting member 121 can be a bolt, which passes through the stop plate 100 and the clamping part 120 in sequence and is then locked by a nut. In this way, it is easier to install and remove the clamping part 120 on the stop plate 100.

[0040] In one embodiment of this utility model, the positioning structure 12 further includes a stiffening rib 122, which is pressed and fixed to a pair of clamping portions 120 on the other side of the stop plate 100. The stiffening rib 122 can connect the two clamping portions 120 into a whole, thereby improving the stability of the clamping portions 120 in clamping the waterstop 11.

[0041] In one embodiment of this utility model, the stiffening rib 122 and the clamping part 120 are fixedly connected by the aforementioned connector 121. Specifically, bolts pass sequentially through the end plate 100, the clamping part 120, and the stiffening rib 122, and are then tightened by nuts. This arrangement connects the end plate 100, the clamping part 120, and the stiffening rib 122 into a single unit, thereby further improving the stability of the clamping part 120 in holding the waterstop 11.

[0042] In one embodiment of this utility model, referring to Figures 1 to 3 The through hole 101 is located in the middle of the end plate 100, that is, in the middle of the secondary lining 14 along the thickness direction after pouring. The waterstop 11 includes a main body 110 and a deformation hole 111; wherein, the main body 110 is laid along the extension direction of the secondary lining to be poured 13, and the deformation hole 111 is set on the main body 110 with the hole wall protruding from the side of the main body 110 along the thickness direction. The deformation hole 111 is located between the first side and the second side of the waterstop 11. When the waterstop 11 is installed on the end plate 100, the deformation hole 111 corresponds to the position of the through hole 101, so that after the secondary lining 14 is poured, the deformation hole 111 corresponds to the position of the structural joint, so that the waterstop 11 can better adapt to the deformation of the structural joint, thereby maintaining good waterproof function.

[0043] In one embodiment of this utility model, in order to improve the interfacial bonding ability between the waterstop 11 and the secondary lining 14, a self-adhesive layer 112 and / or protruding ribs can be provided on one or both sides of the waterstop 11 along the thickness direction.

[0044] In one embodiment of this utility model, after the secondary lining 14 is poured, the positioning structure 12 is removed, and the template system 10 is moved along the tunnel axis. The poured secondary lining 14, the initial support 20 and the template system 10 constitute a new secondary lining waiting area 13. The poured secondary lining 14 can fix the first side of the waterstop 11. The second side of the waterstop 11 can be poured into the adjacent secondary lining 14 by pouring in the new secondary lining waiting area 13, so that the waterstop 11 is poured into the secondary lining 14 as a whole.

[0045] Understandably, before pouring the new secondary lining 14, it is necessary to use the positioning structure 12 to fix the new waterstop 11 on the end plate 100 of the formwork system 10, and so on, until the entire secondary lining 14 is poured.

[0046] It is understood that, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples.

[0047] With the embedded waterstop installation structure provided in this embodiment, when arranging the waterstop 11, the first side of the waterstop 11 extends into the secondary lining waiting area 13 through the through hole 101 on the end plate 100, while the second side remains outside the secondary lining waiting area 13. The positioning structure 12 uses a clamping method to position the second side of the waterstop 11 on the end plate 100, thereby achieving the positioning of the waterstop 11. Compared with the existing methods of fixing with angle steel brackets and binding with galvanized lead wire or steel wire, this method can effectively avoid problems such as local deformation, tearing, breakage, and puncture by lead wire or steel wire of the waterstop 11, thus ensuring the structural integrity and positional accuracy of the waterstop 11 during fixing and concrete pouring, thereby improving the water-stopping effect.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A type of embedded waterstop installation structure, characterized in that, include: The template system (10) and the initial support (20) form a secondary lining waiting area (13); the template system (10) includes a stop plate (100) located on one side of the secondary lining waiting area (13), and the stop plate (100) is provided with a through hole (101) along the length direction of the secondary lining waiting area (13); The waterstop (11) includes a first side and a second side along the width direction. The first side extends into the secondary lining waiting area (13) through the through hole (101), and the second side is located outside the secondary lining waiting area (13). The positioning structure (12) is adapted to clamp and position the second side on the head plate (100).

2. The embedded waterstop installation structure according to claim 1, characterized in that, The positioning structure (12) includes: A pair of clamping parts (120) are provided opposite to each other, and the pair of clamping parts (120) are adapted to clamp the two sides of the second side along the thickness direction respectively; The connector (121) is adapted to fix the clamping part (120) and the stop plate (100) in a fixed manner.

3. The embedded waterstop installation structure according to claim 2, characterized in that, The positioning structure (12) also includes stiffening ribs (122); The stiffening rib (122) and the pair of clamping parts (120) are pressed and fixed to the other side of the end plate (100).

4. The embedded waterstop installation structure according to claim 3, characterized in that, The stiffening rib (122), the clamping part (120) and the end plate (100) are fixedly connected by the connector (121).

5. The embedded waterstop installation structure according to claim 2, characterized in that, The clamping part (120) includes a supporting square timber.

6. The embedded waterstop installation structure according to claim 4, characterized in that, The connector (121) includes bolts; The bolt passes through the end plate (100), the clamping part (120) and the stiffening rib (122) in sequence and is then locked by a nut.

7. The embedded waterstop installation structure according to any one of claims 1 to 6, characterized in that, The waterstop (11) includes: The main body (110) is laid along the extension direction of the secondary lining to be poured area (13); A deformation hole (111) is provided on the main body (110), and the hole wall protrudes from one side of the main body (110) along the thickness direction. The deformation hole (111) is located between the first side and the second side.

8. The embedded waterstop installation structure according to claim 7, characterized in that, The through hole (101) is located in the middle of the baffle plate (100), and the deformable hole (111) corresponds to the position of the through hole (101).

9. The embedded waterstop installation structure according to claim 1, characterized in that, The initial support (20) is covered with a waterproof layer (15) on the side facing the secondary lining to be poured area (13).

10. The embedded waterstop installation structure according to claim 9, characterized in that, The waterproof layer (15) includes: a geotextile nonwoven fabric (150) laid on the initial support (20) and a waterproof board (151) laid on the geotextile nonwoven fabric (150).

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