Installation structure of embedded waterstop in reinforced concrete section

Abstract

The utility model relates to tunnel construction technical field provides a kind of installation structure of embedded waterstop in reinforced concrete section, comprising: formwork system, with initial support to form secondary lining to be poured area;Formwork system includes the head board of being located at the one side of secondary lining to be poured area, and the through-hole along the length direction of secondary lining to be poured area is equipped on head board;Waterstop, including the first side and second side along width direction, and first side is by through-hole and is inserted into secondary lining to be poured area;Positioning mechanism is applicable to in secondary lining to be poured area fixed waterstop;Positioning mechanism and head board and at least one of the structural reinforcement in the secondary lining to be poured area are fixedly connected, and with first side clamping fixed.Such setting, effectively avoid the deviation of waterstop caused by concrete impact and local deformation, tearing, fracture or be pierced by steel wire / lead wire and other problems, ensure the structural integrity and positional accuracy of waterstop, improve waterstop effect.

Description

Technical Field

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

[0002] As a vital transportation hub connecting different regions, the safety and durability of tunnel structures directly affect the normal operation of the entire transportation system. Structural joints are structural nodes reserved during tunnel construction to adapt to geological conditions, construction techniques, or structural deformation requirements. However, due to complex stresses and variable sealing interfaces, these structural joints are highly susceptible to groundwater seepage. Therefore, waterproofing at structural joints has become crucial for ensuring the safety and long-term stable operation of tunnels.

[0003] Embedded waterstops are commonly used waterproofing components in concrete structures. They are typically pre-embedded in the concrete on both sides of structural joints, forming a continuous, sealed barrier within the concrete structure to block water seepage. During concrete pouring, the embedded waterstops need to be secured. Traditionally, this is done outside the pouring area using angle steel frames, galvanized wire, or steel wire binding.

[0004] However, during the concrete pouring process, the portion of the waterstop located within the pouring area will be subjected to significant concrete impact, which may cause the waterstop to shift. Furthermore, under the impact of the concrete, the binding and fixing parts of the waterstop will be stretched, which may lead to local deformation, tearing, breakage, or puncture by steel wire / lead wire. This makes it difficult to ensure the integrity of the waterstop structure and the accuracy of its position, thus affecting the water-stopping effect.

[0005] Therefore, ensuring the structural integrity and accurate positioning of the waterstop to guarantee its water-stopping 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 in reinforced concrete sections to solve the defects of existing technologies where waterstops are easily misaligned or damaged during fixing and concrete pouring, affecting the waterstop effect. It can ensure the structural integrity and positional accuracy of the waterstop, thereby ensuring the waterstop effect.

[0007] This utility model provides an installation structure for an embedded waterstop strip in a reinforced concrete section, comprising: 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 area to be poured through the through hole; The positioning mechanism is suitable for fixing the waterstop in the secondary lining waiting area; the positioning mechanism is fixedly connected to at least one of the end plate and the pre-set structural steel bars in the secondary lining waiting area, and is clamped and fixed to the first side.

[0008] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein the positioning mechanism includes: The clamping member includes a clamping part and a connecting part. The clamping part extends in a direction perpendicular to the end plate and has a clamping space along its own extending direction. The connecting part is fixedly connected to the structural steel bar. The first connector is suitable for fixing the head plate and the connecting part together.

[0009] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein a pair of connecting parts are provided, and the pair of connecting parts are respectively located on both sides of the clamping part and extend in a direction perpendicular to the clamping part.

[0010] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein the end of the connecting part away from the clamping part is bent into a hook end, and the hook end is hooked and connected to the structural steel reinforcement.

[0011] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein the first connector includes a binding strap, and the connecting part is fixed to the end plate by binding the first connector.

[0012] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein a tie bar is also pre-set in the secondary lining waiting area, and the two ends of the tie bar are respectively fixedly connected to two structural steel bars corresponding to the position. The positioning mechanism further includes a second connector, through which the tie rod and the clamping part are fixedly connected.

[0013] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein the second connector includes a binding strap, and the tie bar and the clamping part are fixed by binding the second connector.

[0014] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein the two ends of the tie rod are bent to form hooks, and the hooks are hooked and connected to the structural steel bars.

[0015] According to the present invention, an embedded waterstop installation structure for reinforced concrete sections is provided, wherein the positioning mechanism further includes stiffening ribs, and the stiffening ribs are located outside the secondary lining area to be poured. The head plate, the connecting part, and the stiffening rib are connected as a whole by the first connecting member.

[0016] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein the initial support is provided with a waterproof layer on the side facing the secondary lining to be poured. The waterproof layer includes a geotextile nonwoven fabric laid on the initial support and a waterproof board laid on the geotextile nonwoven fabric.

[0017] According to the present invention, an embedded waterstop installation structure for reinforced concrete sections is provided, wherein the waterstop includes: The strip is arranged along the length of the secondary lining area to be poured; A self-adhesive layer is disposed on at least one side of the tape along the thickness direction; Ribs protrude from at least one side of the belt body along its thickness direction, and multiple ribs located on the same side are provided along the width direction of the belt body.

[0018] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein the end plate comprises two spliced ​​plate units. In the splicing direction, the two plate units are arranged alternately and at intervals, and the through hole is formed between the two plate units.

[0019] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided. After the secondary lining on the first side is poured, the clamping member clamps and fixes the second side. Furthermore, the clamping member is fixedly connected to the secondary lining through a third connecting member.

[0020] According to the present invention, an embedded waterstop installation structure in a reinforced concrete section is provided, wherein the third connecting member includes: Cement nails are used to fix the secondary lining in place. The connecting part is secured to the cement nail by the binding strap.

[0021] The embedded waterstop installation structure provided by this utility model achieves waterstop positioning by fixing the first side of the waterstop in the secondary lining waiting area. This effectively avoids the problem of overall displacement of the waterstop caused by the impact of concrete on the first side. At the same time, the positioning mechanism and the waterstop are fixed by clamping. Compared with the traditional binding with galvanized lead wire or steel wire, the connection part of the waterstop is subjected to uniform force, which effectively avoids local pulling of the connection part when the waterstop is impacted by concrete on the first side. This reduces problems such as local deformation, tearing, breakage or puncture by steel wire / lead wire, ensuring the structural integrity and positional accuracy of the waterstop and improving the water-stopping effect. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is one of the structural schematic diagrams of the embedded waterstop installation structure in the reinforced concrete section provided in this utility model embodiment.

[0024] Figure 2 This is the second schematic diagram of the installation structure of the embedded waterstop in the reinforced concrete section provided in this embodiment of the utility model.

[0025] Figure 3 This is a schematic diagram of the structure of the waterstop provided in this embodiment of the utility model.

[0026] Figure label: 10. Formwork system; 11. End plate; 110. Through hole; 20. Waterstop; 21. Belt body; 22. Self-adhesive layer; 23. Rib; 30. Positioning mechanism; 31. Clamping part; 310. Clamping part; 311. Connecting part; 32. First connector; 33. Second connector; 34. Stiffening rib; 35. Third connector; 350. Cement nail; 351. Binding strap; 40. Initial support; 50. Secondary lining waiting area; 51. Secondary lining; 60. Structural reinforcement; 61. Tie bar; 70. Waterproof layer; 71. Geotextile nonwoven fabric; 72. Waterproof membrane. Detailed Implementation

[0027] 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.

[0028] To better understand the embedded waterstop installation structure in reinforced concrete sections provided in this utility model embodiment, its application background is first introduced. Structural joints are construction nodes reserved during tunnel construction to adapt to geological conditions, construction technology, or structural deformation requirements. However, due to factors such as complex stress and variable sealing interfaces, these structural joints are prone to forming groundwater seepage paths. The embedded waterstop is a commonly used waterproof component in the concrete structure, which is generally embedded in the concrete on both sides of the structural joint to block the water seepage path.

[0029] When pouring concrete, the embedded waterstop needs to be fixed. In traditional construction, the waterstop is usually fixed outside the pouring area by means of angle steel fixing frame, galvanized lead wire or steel wire binding.

[0030] However, during the concrete pouring process, the portion of the waterstop located within the pouring area will be subjected to significant concrete impact, which may cause the waterstop to shift. Furthermore, under the impact of the concrete, the binding and fixing parts of the waterstop will be stretched, which may lead to local deformation, tearing, breakage, or puncture by steel wire / lead wire. This makes it difficult to ensure the integrity of the waterstop structure and the accuracy of its position, thus affecting the water-stopping effect.

[0031] Therefore, ensuring the structural integrity and accurate positioning of the waterstop to guarantee its water-stopping effect has become an important issue that urgently needs to be addressed.

[0032] Against the above background, this utility model embodiment provides an embedded waterstop installation structure in reinforced concrete sections, which can ensure the structural integrity and positional accuracy of the waterstop during installation and subsequent concrete pouring, thereby ensuring the waterstop effect.

[0033] The following is combined with Figures 1-3 This invention describes the installation structure of an embedded waterstop strip in a reinforced concrete section.

[0034] Reference Figure 1 and Figure 2 An embedded waterstop installation structure in a reinforced concrete section includes a formwork system 10, a waterstop 20, and a positioning mechanism 30. The formwork system 10 and the initial support 40 enclose a secondary lining waiting area 50, and a secondary lining 51 is formed by pouring concrete into the secondary lining waiting area 50. The formwork system 10 includes a stop plate 11 located on one side of the secondary lining waiting area 50, and the stop plate 11 has through holes 110 along the length of the secondary lining waiting area 50. The waterstop 20 includes a first side and a second side along its width. The first side extends into the secondary lining waiting area 50 through the through holes 110 on the stop plate 11, while the second side is located outside the secondary lining waiting area 50. The positioning mechanism 30 is used to fix the waterstop 20 within the secondary lining waiting area 50. The positioning mechanism 30 is fixedly connected to at least one of the stop plate 11 and the pre-installed structural reinforcement 60 within the secondary lining waiting area 50, and is clamped and fixed to the first side.

[0035] In actual tunnel secondary lining construction, the formwork system 10 and the initial support 40 enclose the secondary lining waiting area 50. Only concrete needs to be poured into the secondary lining waiting area 50 to form the secondary lining 51. The end plate 11 is the end closing structure of the formwork system 10. Its location is the location of the structural joint after the secondary lining 51 is poured, and it is also the location of the waterstop 20. After or during the formation of the secondary lining pouring area 50, a waterstop 20 is installed, with the first side of the waterstop 20 extending into the secondary lining pouring area 50 through the through hole 110 on the end plate 11, and the second side located outside the secondary lining pouring area 50. Then, the first side of the waterstop 20 is fixed in the secondary lining pouring area 50 using a positioning mechanism 30. Specifically, the positioning mechanism 30 is fixedly connected to at least one of the end plate 11 and the pre-set structural steel bars 60 in the secondary lining pouring area 50, and the positioning mechanism 30 clamps and fixes the first side of the waterstop 20, thereby achieving the positioning of the waterstop 20.

[0036] Compared to related technologies, fixing the first side of the waterstop 20 within the secondary lining pouring area 50 to achieve waterstop 20 positioning can effectively avoid the problem of the waterstop 20 shifting as a whole due to concrete impact on the first side. At the same time, the positioning mechanism 30 and the waterstop 20 are fixed by clamping, which, compared to traditional galvanized lead wire or steel wire binding, can ensure that the connection part of the waterstop 20 is subjected to uniform force, effectively avoiding localized pulling of the connection part when the waterstop 20 is impacted by concrete on the first side. This reduces problems such as local deformation, tearing, breakage, or puncture by steel wire / lead wire of the waterstop 20, ensuring the structural integrity and positional accuracy of the waterstop 20, and improving the water-stopping effect.

[0037] It should be noted that after the secondary lining 51 on the first side of the corresponding waterstop 20 is poured, the first side is already deeply embedded in the secondary lining 51. When concrete is poured into the secondary lining waiting area 50 on the second side of the corresponding waterstop 20, the problems mentioned in the background are basically no longer present. Therefore, the above-mentioned technical solution provided in this embodiment can effectively solve the technical problems in the background.

[0038] It should be noted that the initial support 40 is mainly used to control the deformation of the surrounding rock and ensure construction safety. Its structure is generally shotcrete, and it is usually constructed immediately after tunnel excavation. The secondary lining 51 refers to the permanent lining constructed after the initial support 40 has stabilized.

[0039] In one embodiment of this utility model, a waterproof layer 70 is laid on the side of the initial support 40 facing the secondary lining waiting area 50. Specifically, after the initial support 40 is constructed, the waterproof layer 70 is laid, and then the secondary lining 51 is constructed. In this way, the waterproof layer 70 can form a continuous waterproof barrier between the initial support 40 and the secondary lining 51, preventing water from seeping into the tunnel.

[0040] In one embodiment of this utility model, the waterproof layer 70 includes a geotextile 71 and a waterproof membrane 72; wherein the geotextile 71 is laid on the initial support 40, and the waterproof membrane 72 is laid on the geotextile 71. The geotextile 71 can prevent the waterproof membrane 72 from directly contacting the initial support 40, protecting the waterproof membrane 72 from damage. The waterproof membrane 72 can be made of materials such as high-density polyethylene (HDPE) and polyvinyl chloride (PVC), giving it excellent impermeability and effectively preventing water from penetrating into the interior of the secondary lining 51.

[0041] Specifically, the specific specifications of the geotextile nonwoven fabric 71 and the waterproof board 72 can be flexibly selected according to the actual engineering needs, and this utility model embodiment does not impose specific limitations.

[0042] After the waterproof layer 70 is laid, the secondary lining 51 is constructed. The secondary lining waiting area 50 is enclosed by the formwork system 10 and the initial support 40. The specific structural form of the formwork system 10 can refer to existing formwork trolleys, and will not be described in detail in this embodiment. The end plate 11 is the end closing structure of the formwork trolley. Its location is the junction of adjacent secondary linings 51, the location of the structural joint after pouring, and also the location of the waterstop 20. The waterstop 20 can be installed after the secondary lining waiting area 50 is enclosed, or it can be installed during the enclosed process of the secondary lining waiting area 50.

[0043] Specifically, the end plate 11 includes two plate units that are joined together vertically. In the splicing direction, the two plate units are opposite to each other and spaced apart. A through hole 110 is formed between the two plate units. When installing the waterstop 20, the waterstop 20 is simply placed between the two plate units, and then the two plate units are joined together to form the end plate 11, so that the first side of the waterstop 20 can be placed in the secondary lining waiting area 50.

[0044] To provide a more intuitive understanding of the working relationship between the waterstop 20, the end plate 11, and the positioning mechanism 30, the structure of the waterstop 20 will be described in detail below.

[0045] Reference Figures 1 to 3 The waterstop 20 includes a strip body 21, a self-adhesive layer 22, and ribs 23. The strip body 21 is laid along the length of the secondary lining area 50 to be poured. The self-adhesive layer 22 is disposed on at least one side of the strip body 21 along the thickness direction to improve the interfacial bonding ability between the waterstop 20 and the concrete. The ribs 23 protrude from at least one side of the strip body 21 along the thickness direction, and multiple ribs 23 located on the same side are arranged alternately along the width direction of the strip body 21. The ribs 23 can increase the contact area between the waterstop 20 and the secondary lining 51 and extend the water infiltration path to improve the sealing effect.

[0046] Specifically, the self-adhesive layer 22 and the ribs 23 are both disposed on both sides of the belt body 21 along the thickness direction, and the self-adhesive layer 22 is located between two adjacent ribs 23.

[0047] Specifically, the waterstop 20 is made entirely of rubber material, and the self-adhesive layer 22 is made of non-asphalt self-adhesive.

[0048] After the waterstop 20 is installed on the end plate 11, the waterstop 20 is fixed by the positioning mechanism 30.

[0049] In one embodiment of this utility model, the positioning mechanism 30 includes a clamping member 31 and a first connecting member 32. The clamping member 31 includes a clamping portion 310 and a connecting portion 311. The clamping portion 310 extends in a direction perpendicular to the end plate 11, and has a clamping space along its extending direction. The first side of the waterstop 20 is clamped within the clamping space. The connecting portion 311 is fixedly connected to the structural steel reinforcement 60, and is also fixedly connected to the end plate 11 via the first connecting member 32. This configuration allows the connecting portion 311 of the clamping member 31 to be connected to both the structural steel reinforcement 60 and the end plate 11, significantly improving the stability of the clamping member 31 in clamping and fixing the waterstop 20.

[0050] In one embodiment of this utility model, multiple clamping members 31 are provided, and the multiple clamping members 31 are arranged along the length direction of the secondary lining to be poured area 50. Specifically, the spacing between adjacent clamping members 31 is 0.3 meters. The multiple clamping members 31 can improve the stability of clamping and positioning the waterstop 20.

[0051] Specifically, the clamping part 310 has an overall U-shaped structure, and the aforementioned clamping space is formed within the U-shaped space of the clamping part 310. Furthermore, the clamping part 310 is made of a material with a certain elastic modulus, such as steel, allowing the clamping space of the clamping part 310 to open and close elastically, thereby achieving clamping of the first side of the waterstop 20. A pair of connecting parts 311 are provided, located on both sides of the clamping part 310 and extending in a direction perpendicular to the clamping part 310. Specifically, the two connecting parts 311 are located on both sides of the U-shaped opening of the clamping part 310, and the connecting parts 311 are integrally formed with the clamping part 310 to improve the overall structural strength of the clamping part 310.

[0052] To facilitate the connection between the clamping member 31 and the structural steel reinforcement 60, in one embodiment of this utility model, the end of the connecting part 311 away from the clamping part 310 is bent into a hook end, which hooks and engages with the structural steel reinforcement 60. With this configuration, it is only necessary to hook and connect the hook ends at both ends of the clamping part 310 to two corresponding structural steel reinforcements 60 along the thickness direction of the secondary lining 51, thereby achieving the connection and fixation between the clamping member 31 and the structural steel reinforcement 60, thus achieving the initial positioning of the clamping member 31 and facilitating the subsequent connection and fixation between the clamping member 31 and the end plate 11.

[0053] In one embodiment of this utility model, the first connecting member 32 includes a binding strap, such as galvanized lead wire or steel wire, and the connecting part 311 and the end plate 11 are bound and fixed by the first connecting member 32. In this way, after the clamping member 31 is fixed to the structural steel bar 60, the connecting part 311 and the end plate 11 can be bound and fixed by the binding strap, which helps to improve the convenience of connecting and fixing the clamping member 31.

[0054] In one embodiment of this utility model, a tie bar 61 is pre-installed in the secondary lining waiting area 50. The two ends of the tie bar 61 are respectively fixedly connected to two structural steel bars 60 at corresponding positions along the thickness direction of the secondary lining 51. The tie bar 61 can tighten the two structural steel bars 60 at their corresponding positions, making the overall structure formed by the structural steel bars 60 and the tie bar 61 more stable. Specifically, the two ends of the tie bar 61 are bent to form hooks, which are hooked and connected to the structural steel bars 60.

[0055] In one embodiment of this utility model, the positioning mechanism 30 further includes a second connecting member 33, and the tie rod 61 and the clamping part 310 are fixedly connected by the second connecting member 33. This arrangement allows the clamping member 31, the structural steel bar 60, and the tie rod 61 to be connected as a whole, thereby further improving the stability of the clamping member 31 and achieving a more stable and reliable connection of the waterstop 20.

[0056] In one embodiment of the present invention, the positioning mechanism 30 further includes a stiffening rib 34, which is located outside the secondary lining waiting area 50. The end plate 11, the connecting part 311 and the stiffening rib 34 are connected as a whole by the first connecting member 32.

[0057] Specifically, the head plate 11, the connecting part 311 and the stiffening rib 34 are fixed by binding with the first connecting member 32.

[0058] With this configuration, the head plate 11, the connecting part 311 and the stiffening rib 34 are connected as a whole through the first connecting member 32, which can further improve the stability of the connection between the clamping member 31 and the head plate 11, thereby achieving a more stable and reliable connection of the waterstop 20.

[0059] After the secondary lining 51 on the first side of the corresponding waterstop 20 is poured, the first side is deeply embedded in the secondary lining 51. However, when the secondary lining waiting area 50 on the second side of the corresponding waterstop 20 is poured, the second side will still be impacted by the concrete. Especially when the waterstop 20 is made of flexible materials such as rubber, the second side may deform under the impact of the concrete, affecting the waterstop effect.

[0060] To address the aforementioned technical problems, in one embodiment of this utility model, after the secondary lining 51 corresponding to the first side is poured, the second side of the waterstop 20 is clamped and fixed using the aforementioned clamping member 31. Furthermore, the clamping member 31 is fixedly connected to the secondary lining 51 via a third connecting member 35. This allows for the clamping and positioning of the second side of the waterstop 20, effectively preventing deformation of the second side of the waterstop 20 during concrete pouring, thereby further improving the water-stopping effect of the waterstop 20.

[0061] In one embodiment of the present invention, the third connector 35 includes a cement nail 350 and a binding strap 351; wherein the cement nail 350 is fixedly connected to the secondary lining 51; the binding strap 351 is tied and fixed to the connecting part 311 and the cement nail 350 by the binding strap 351.

[0062] Specifically, the strap 351 can be made of any form of strip or wire component, such as galvanized lead wire or steel wire.

[0063] 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.

[0064] The embedded waterstop installation structure in the reinforced concrete section provided by this utility model can achieve the positioning of the waterstop 20 by fixing the first side of the waterstop 20 in the secondary lining waiting area 50. This can effectively avoid the problem of the waterstop 20 shifting as a whole due to the impact of concrete on the first side. At the same time, the positioning mechanism 30 and the waterstop 20 are fixed by clamping. Compared with the traditional galvanized lead wire or steel wire binding, the connection part of the waterstop 20 can be evenly stressed, effectively avoiding the local pulling of the connection part of the waterstop 20 when the first side is impacted by concrete. This reduces the problems of local deformation, tearing, breakage or puncture by steel wire / lead wire of the waterstop 20, ensuring the structural integrity and positional accuracy of the waterstop 20 and improving the water-stopping effect. 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 structure for installing an embedded waterstop in a reinforced concrete section, characterized in that, include: The template system (10) and the initial support (40) form a secondary lining waiting area (50); the template system (10) includes a stop plate (11) located on one side of the secondary lining waiting area (50), and the stop plate (11) is provided with a through hole (110) along the length direction of the secondary lining waiting area (50). The waterstop (20) includes a first side and a second side along the width direction, the first side extending into the secondary lining area (50) through the through hole (110); The positioning mechanism (30) is used to fix the waterstop (20) in the secondary lining waiting area (50); the positioning mechanism (30) is fixedly connected to at least one of the end plate (11) and the pre-set structural steel bars (60) in the secondary lining waiting area (50), and is clamped and fixed to the first side.

2. The embedded waterstop installation structure in reinforced concrete sections according to claim 1, characterized in that, The positioning mechanism (30) includes: The clamping member (31) includes a clamping part (310) and a connecting part (311). The clamping part (310) extends in a direction perpendicular to the end plate (11), and the clamping part (310) is provided with a clamping space along its own extension direction. The connecting part (311) is fixedly connected to the structural steel bar (60). The first connector (32) is adapted to fix the head plate (11) and the connecting part (311) together.

3. The embedded waterstop installation structure in reinforced concrete sections according to claim 2, characterized in that, The connecting part (311) is provided in pairs, and the pair of connecting parts (311) are respectively located on both sides of the clamping part (310) and extend in a direction perpendicular to the clamping part (310).

4. The embedded waterstop installation structure in a reinforced concrete section according to claim 3, characterized in that, The end of the connecting part (311) away from the clamping part (310) is bent into a hook end, and the hook end is hooked and connected to the structural steel bar (60).

5. The embedded waterstop installation structure in reinforced concrete sections according to claim 2, characterized in that, The first connector (32) includes a binding strap, and the connecting part (311) is bound and fixed to the end plate (11) by the first connector (32).

6. The embedded waterstop installation structure in reinforced concrete sections according to claim 2, characterized in that, The secondary lining waiting area (50) is also pre-installed with tie bars (61), and the two ends of the tie bars (61) are respectively fixedly connected to the two structural steel bars (60) corresponding to the position. The positioning mechanism (30) further includes a second connector (33), and the tie rod (61) and the clamping part (310) are fixedly connected by the second connector (33).

7. The embedded waterstop installation structure in a reinforced concrete section according to claim 6, characterized in that, The second connector (33) includes a binding strap, and the tie (61) and the clamping part (310) are fixed by binding the second connector (33).

8. The embedded waterstop installation structure in a reinforced concrete section according to claim 6, characterized in that, The two ends of the tie rod (61) are bent to form hooks, and the hooks are hooked to the structural steel bar (60).

9. The embedded waterstop installation structure in a reinforced concrete section according to claim 2, characterized in that, The positioning mechanism (30) also includes stiffening ribs (34), which are located outside the secondary lining waiting area (50); The baffle plate (11), the connecting part (311) and the stiffening rib (34) are connected as a whole by the first connecting member (32).

10. The embedded waterstop installation structure in a reinforced concrete section according to any one of claims 2 to 9, characterized in that, After the secondary lining (51) corresponding to the first side is poured, the clamping member (31) clamps and fixes the second side, and the clamping member (31) is fixedly connected to the secondary lining (51) through the third connector (35).

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