Tunnel construction joint waterproof system

Abstract

The utility model relates to the technical field of tunnel construction, and provides a tunnel construction joint waterproof system which comprises a water stop belt laid on a construction joint, and the construction joint comprises a longitudinal construction joint, an arch wall annular construction joint and an inverted arch annular construction joint. The water-stop belt comprises a longitudinal water-stop belt and a transverse water-stop belt, wherein the longitudinal water-stop belt is laid on the longitudinal construction joint; the arch wall annular water stop belt is laid on the arch wall annular construction joint; the inverted arch annular water stop belt is laid on the inverted arch annular construction joint; and the arch wall annular waterstop and the inverted arch annular waterstop are respectively connected with the longitudinal waterstop into a whole through joints. By means of the arrangement, potential leakage points can be effectively reduced, the compressive strength and structural stability of all the water stop belts are remarkably improved, the water stop belts are not prone to displacement or damage caused by external force, the stability and reliability of the whole waterproof system are improved, the waterproof performance of the construction joints is further improved, and safe operation of a traffic system is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction, and in particular to a waterproofing system for tunnel construction joints. 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 an important transportation hub connecting different regions, the safety and durability of tunnel structures are directly related to the normal operation of the entire transportation system.

[0003] Tunnel construction joints are joints formed during the concrete pouring process due to different construction stages or technical requirements. These joints constitute potential weaknesses in the tunnel structure and can easily become channels for groundwater seepage. Therefore, ensuring effective waterproofing measures at construction joints is crucial for ensuring the safety and long-term stable operation of the tunnel.

[0004] Waterstops are a common waterproofing method that uses their elasticity and sealing properties to prevent water from seeping through construction joints. While this method can meet basic waterproofing needs in most cases, it may lose its effectiveness due to displacement or other reasons in high-pressure water environments or complex geological conditions, leading to leakage problems.

[0005] Therefore, how to further improve the waterproofing performance of construction joints and ensure the safe operation of the transportation system has become an important issue that urgently needs to be addressed. Utility Model Content

[0006] This utility model provides a waterproofing system for tunnel construction joints, which solves the defects of existing waterproofing structures that are difficult to meet the waterproofing requirements of construction joints, and can further improve the waterproofing performance of construction joints, ensuring the safe operation of transportation systems.

[0007] This utility model provides a waterproofing system for tunnel construction joints, including a waterstop strip laid on the construction joint, wherein the construction joint includes a longitudinal construction joint, an arch wall circumferential construction joint, and an invert arch circumferential construction joint;

[0008] The waterstop strip includes:

[0009] A longitudinal waterstop is laid on the longitudinal construction joint;

[0010] A circumferential waterstop is laid on the circumferential construction joint of the arch wall;

[0011] A circumferential waterstop strip for the invert arch is laid on the circumferential construction joint of the invert arch;

[0012] The circumferential waterstop of the arch wall and the circumferential waterstop of the inverted arch are connected to the longitudinal waterstop as a whole through joints.

[0013] According to the tunnel construction joint waterproofing system provided by this utility model, the joint includes a "T" shaped joint;

[0014] At the misalignment between the circumferential construction joint of the arch wall and the circumferential construction joint of the inverted arch, the circumferential waterstop of the arch wall and the circumferential waterstop of the inverted arch are respectively connected to the longitudinal waterstop through the "T"-shaped joint.

[0015] According to the tunnel construction joint waterproofing system provided by this utility model, the joint further includes a cross-shaped joint;

[0016] At the locations corresponding to the circumferential waterstop of the arch wall and the circumferential waterstop of the inverted arch, the circumferential waterstop of the arch wall, the circumferential waterstop of the inverted arch, and the longitudinal waterstop are connected by the cross-shaped joint.

[0017] According to the tunnel construction joint waterproofing system provided by this utility model, the circumferential waterstop of the arch wall and / or the circumferential waterstop of the invert arch, the longitudinal waterstop and the joint overlap in the same plane.

[0018] According to the tunnel construction joint waterproofing system provided by this utility model, the overlapping area of ​​the waterstop and the joint is butt-welded by hot vulcanization.

[0019] According to the waterproofing system for tunnel construction joints provided by this utility model, the overlap width between the waterstop and the joint is greater than or equal to 5 centimeters.

[0020] According to the tunnel construction joint waterproofing system provided by this utility model, the waterstop includes a back-adhesive waterstop disposed between the initial support and the secondary lining of the tunnel.

[0021] According to the tunnel construction joint waterproofing system provided by this utility model, the back-adhesive waterstop includes:

[0022] The first body is laid along the length of the construction joint. The first body includes a first surface and a second surface along the thickness direction, and the second surface is connected to the secondary lining.

[0023] Multiple first ribs are protruding and disposed on the second surface.

[0024] According to the tunnel construction joint waterproofing system provided by this utility model, the waterstop includes a centrally embedded waterstop embedded in the secondary lining of the tunnel.

[0025] According to the tunnel construction joint waterproofing system provided by this utility model, the embedded waterstop includes:

[0026] The second body is laid along the length of the construction joint;

[0027] Multiple second ribs protrude from both sides of the second body along the thickness direction.

[0028] The tunnel construction joint waterproofing system provided by this utility model includes a longitudinal waterstop laid on the longitudinal construction joint to prevent water from seeping into the tunnel; an arch wall circumferential waterstop laid on the arch wall circumferential construction joint to prevent water from seeping into the tunnel; and an invert arch circumferential waterstop laid on the invert arch circumferential construction joint to prevent water from seeping into the tunnel. A joint connects the longitudinal waterstop, the arch wall circumferential waterstop, and the invert arch circumferential waterstop into a continuous whole, effectively reducing potential leakage points and significantly improving the compressive strength and structural stability of each waterstop. The waterstops are not easily displaced or damaged by external forces, which helps improve the stability and reliability of the entire waterproofing system, thereby further enhancing the waterproofing performance at the construction joint and ensuring the safe operation of the transportation system. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is one of the structural schematic diagrams of the tunnel construction joint waterproofing system provided in this embodiment of the utility model.

[0031] Figure 2 This is the second structural schematic diagram of the tunnel construction joint waterproofing system provided in this embodiment of the utility model.

[0032] Figure 3 This is the third structural schematic diagram of the tunnel construction joint waterproofing system provided in this embodiment of the utility model.

[0033] Figure 4 This is the fourth structural schematic diagram of the tunnel construction joint waterproofing system provided in this embodiment of the utility model.

[0034] Figure 5 This is a schematic diagram of the structure of the back-adhesive waterstop provided in this embodiment of the utility model.

[0035] Figure 6 This is a schematic diagram of the embedded waterstop provided in an embodiment of the present invention.

[0036] Figure label:

[0037] 10. Longitudinal waterstop; 11. Circumferential waterstop for arch wall; 12. Circumferential waterstop for invert arch; 13. Back-attached waterstop; 130. First main body; 131. First rib; 14. Embedded waterstop; 140. Second main body; 141. Second rib; 20. "T" shaped joint; 21. "+" shaped joint; 22. First lap edge; 23. Second lap edge. Detailed Implementation

[0038] 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.

[0039] To better understand the waterproofing system for tunnel construction joints provided by this utility model, we will first introduce its application background. As an important transportation hub connecting different regions, the safety and durability of the tunnel structure are directly related to the normal operation of the entire transportation system.

[0040] Tunnel construction joints are joints formed during the concrete pouring process due to different construction stages or technical requirements. These joints constitute potential weaknesses in the tunnel structure and can easily become channels for groundwater infiltration. Traditionally, waterstops are used to seal construction joints at different locations. As a common waterproofing method, waterstops prevent water from penetrating the construction joints through their elasticity and sealing properties.

[0041] Although the above-mentioned waterproofing methods can meet basic waterproofing needs in most cases, the waterstop may still lose its effectiveness due to displacement or other reasons when facing high-pressure water environments or complex geological conditions, thus leading to leakage problems.

[0042] Therefore, how to further improve the waterproofing performance of construction joints and ensure the safe operation of the transportation system has become an important issue that urgently needs to be addressed.

[0043] To address the aforementioned problems, this utility model provides a waterproofing system for tunnel construction joints, which can further improve the waterproofing effect at construction joints and ensure the safe operation of transportation systems.

[0044] The following is combined Figures 1 to 6 This invention describes a waterproofing system for tunnel construction joints.

[0045] Reference Figures 1 to 4A waterproofing system for tunnel construction joints includes a waterstop strip laid on the construction joint. The construction joint includes a longitudinal construction joint, an arch wall circumferential construction joint, and an invert arch circumferential construction joint. The waterstop strip includes a longitudinal waterstop strip 10, an arch wall circumferential waterstop strip 11, and an invert arch circumferential waterstop strip 12. The longitudinal waterstop strip 10 is laid on the longitudinal construction joint; the arch wall circumferential waterstop strip 11 is laid on the arch wall circumferential construction joint; and the invert arch circumferential waterstop strip 12 is laid on the invert arch circumferential construction joint. The arch wall circumferential waterstop strip 11 and the invert arch circumferential waterstop strip 12 are connected to the longitudinal waterstop strip 10 as a whole through joints.

[0046] It should be noted that the tunnel includes the arch wall and the invert. The aforementioned longitudinal construction joint refers to the construction joint extending along the longitudinal direction of the tunnel. The aforementioned circumferential construction joint of the arch wall refers to the construction joint formed within the tunnel arch wall and extending along the arc of the arch wall. The aforementioned circumferential construction joint of the invert refers to the construction joint formed within the tunnel invert and extending along the arc of the invert.

[0047] Through the above technical solution, the longitudinal waterstop 10 is laid on the longitudinal construction joint to prevent water from seeping into the tunnel from the longitudinal construction joint. The arch wall circumferential waterstop 11 is laid on the arch wall circumferential construction joint to prevent water from seeping into the tunnel from the arch wall circumferential construction joint. The invert arch circumferential waterstop 12 is laid on the invert arch circumferential construction joint to prevent water from seeping into the tunnel from the invert arch circumferential construction joint. The joint connects the longitudinal waterstop 10, the arch wall circumferential waterstop 11, and the invert arch circumferential waterstop 12 into a continuous whole, which can effectively reduce potential leakage points and significantly improve the compressive strength and structural stability of each waterstop. The waterstop is not easily displaced or damaged by external forces, which is conducive to improving the stability and reliability of the entire waterproofing system, thereby further improving the waterproofing performance at the construction joint and ensuring the safe operation of the transportation system.

[0048] It is understood that the above description of the tunnel structure is only a brief overview, intended to provide a more intuitive understanding of the placement of each waterstop and the positional relationship between them. Other aspects of the tunnel structure are not described in detail in this embodiment. Furthermore, the dimensions and specifications of each waterstop can be flexibly configured according to actual construction needs, and no specific limitations are imposed in this embodiment.

[0049] In one embodiment of this utility model, the aforementioned joints include a T-shaped joint 20 and a cross-shaped joint 21. Specifically, at the misalignment between the circumferential construction joint of the arch wall and the circumferential construction joint of the inverted arch, the circumferential waterstop 11 of the arch wall and the circumferential waterstop 12 of the inverted arch are respectively connected to the longitudinal waterstop 10 via the T-shaped joint 20. At corresponding positions of the circumferential construction joint of the arch wall and the circumferential construction joint of the inverted arch, the circumferential waterstop 11 of the arch wall, the circumferential waterstop 12 of the inverted arch, and the longitudinal waterstop 10 are connected via the cross-shaped joint 21.

[0050] In one embodiment of this utility model, the "T"-shaped joint 20 has three overlapping sides, including two first overlapping sides 22 located at both ends of the "T"-shaped joint 20 along the first direction L, and a second overlapping side 23 located at one end of the "T"-shaped joint 20 along the second direction N. The first direction L is perpendicular to the second direction N, and the three overlapping sides are located in the same plane. The longitudinal waterstop 10 on the same longitudinal construction joint is segmented. The two first overlapping sides 22 are used to connect two adjacent segments of the longitudinal waterstop 10 on the same longitudinal construction joint, and the second overlapping side 23 is used to connect the circumferential waterstop 11 of the arch wall or the circumferential waterstop 12 of the inverted arch. The circumferential waterstop 11 of the arch wall or the circumferential waterstop 12 of the inverted arch, the longitudinal waterstop 10, and the joint overlap and connect into a whole in the same plane.

[0051] In one embodiment of this utility model, the "+" shaped joint 21 has four overlapping sides, including two first overlapping sides 22 located at both ends of the "+" shaped joint 21 along the first direction L, and two second overlapping sides 23 located at both ends of the "+" shaped joint 21 along the second direction N. The first direction L is perpendicular to the second direction N, and the four overlapping sides are located in the same plane. The longitudinal waterstop 10 on the same longitudinal construction joint is segmented. The two first overlapping sides 22 are used to connect two adjacent segments of the longitudinal waterstop 10 on the same longitudinal construction joint, and the two second overlapping sides 23 are used to connect the circumferential waterstop 11 of the arch wall and the circumferential waterstop 12 of the invert arch, respectively. The circumferential waterstop 11 of the arch wall, the circumferential waterstop 12 of the invert arch, the longitudinal waterstop 10, and the joint overlap and connect into a whole in the same plane.

[0052] In one embodiment of this utility model, the overlapping area of ​​the waterstop and the joint is connected by a hot vulcanization process.

[0053] It should be noted that the rubber hot vulcanization process is a commonly used joining process for rubber products. The specific process parameters and steps can be referred to the existing technology, and will not be repeated in the embodiments of this utility model.

[0054] In one embodiment of this utility model, the overlap width between the waterstop and the joint is greater than or equal to 5 cm, which ensures the connection strength and sealing performance between the waterstop and the joint.

[0055] Depending on different working conditions and design requirements, waterstops can have a variety of different structural forms.

[0056] In one embodiment of this utility model, the waterstop includes a back-adhesive waterstop 13.

[0057] Reference Figure 5The back-adhesive waterstop 13 is installed between the initial support and the secondary lining of the tunnel and laid on the construction joint. The back-adhesive waterstop 13 serves as a waterproof barrier between the initial support and the secondary lining. It mainly includes a first body 130 and multiple first ribs 131. The first body 130 is laid along the length of the construction joint and includes a first surface and a second surface along the thickness direction. The second surface is used to cooperate with the secondary lining to seal the construction joint formed on the secondary lining. The first ribs 131 protrude from the second surface of the first body 130.

[0058] Specifically, after the back-adhesive waterstop 13 is installed, multiple first ribs 131 are embedded in the secondary lining. This not only increases the contact area between the back-adhesive waterstop 13 and the secondary lining, extends the water infiltration path, and improves the sealing effect, but also increases the stability of the connection between the back-adhesive waterstop 13 and the secondary lining, ensuring that the back-adhesive waterstop 13 can be firmly attached to the position of the circumferential construction joint, so that it maintains good waterproof performance.

[0059] In one embodiment of this utility model, the waterstop includes an embedded waterstop 14.

[0060] Reference Figure 6 The embedded waterstop 14 is embedded in the secondary lining and laid on the construction joint. As a waterproof barrier set in the secondary lining, the embedded waterstop 14 mainly includes a second body 140 and multiple second ribs 141. The second body 140 is laid along the length of the construction joint. The second ribs 141 protrude from both sides of the second body 140 along the thickness direction.

[0061] Specifically, after the embedded waterstop 14 is installed, multiple second ribs 141 are embedded with the concrete structure of the secondary lining. This not only increases the contact area between the embedded waterstop 14 and the secondary lining, extends the water infiltration path, and improves the sealing effect, but also increases the stability of the connection between the embedded waterstop 14 and the secondary lining, ensuring that the embedded waterstop 14 can be firmly attached to the position of the circumferential construction joint, so as to maintain good waterproof performance.

[0062] It is understood that waterstops include, but are not limited to, the types listed above. Other types of waterstops can also be applied according to different construction needs, and will not be listed in detail in this embodiment of the utility model.

[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 tunnel construction joint waterproofing system provided by this utility model embodiment has a longitudinal waterstop 10 laid on the longitudinal construction joint to prevent water from seeping into the tunnel. An arch wall circumferential waterstop 11 is laid on the arch wall circumferential construction joint to prevent water from seeping into the tunnel. An invert arch circumferential waterstop 12 is laid on the invert arch circumferential construction joint to prevent water from seeping into the tunnel. The joint connects the longitudinal waterstop 10, the arch wall circumferential waterstop 11, and the invert arch circumferential waterstop 12 into a continuous whole, which can effectively reduce potential leakage points and significantly improve the compressive strength and structural stability of each waterstop. The waterstops are not easily displaced or damaged by external forces, which is conducive to improving the stability and reliability of the entire waterproofing system, thereby further improving the waterproofing performance at the construction joint and ensuring the safe operation of the transportation system.

[0065] 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 tunnel construction joint waterproofing system characterized by, Includes a waterstop strip laid on the construction joint, wherein the construction joint includes a longitudinal construction joint, a circumferential construction joint of the arch wall, and a circumferential construction joint of the invert arch; The waterstop strip includes: Longitudinal waterstop (10) is laid on the longitudinal construction joint; A circumferential waterstop (11) is laid on the circumferential construction joint of the arch wall; The circumferential waterstop (12) of the invert arch is laid on the circumferential construction joint of the invert arch; The circumferential waterstop (11) of the arch wall and the circumferential waterstop (12) of the inverted arch are connected to the longitudinal waterstop (10) as a whole through joints.

2. The tunneling joint waterproofing system of claim 1, wherein, The connector includes a "T" shaped connector (20); At the misalignment between the circumferential construction joint of the arch wall and the circumferential construction joint of the inverted arch, the circumferential waterstop (11) of the arch wall and the circumferential waterstop (12) of the inverted arch are respectively connected to the longitudinal waterstop (10) through the "T"-shaped joint (20).

3. The tunneling joint waterproofing system according to claim 2, wherein, The connector also includes a cross-shaped connector (21); At the corresponding positions of the circumferential waterstop (11) of the arch wall and the circumferential waterstop (12) of the inverted arch, the circumferential waterstop (11), the circumferential waterstop (12) of the arch wall and the longitudinal waterstop (10) are connected by the cross-shaped joint (21).

4. The tunnel construction joint waterproofing system according to any one of claims 1 to 3, characterized in that The circumferential waterstop (11) of the arch wall and / or the circumferential waterstop (12) of the inverted arch, the longitudinal waterstop (10) and the joint overlap in the same plane.

5. The tunneling joint waterproofing system according to claim 1, wherein, The waterstop and the joint overlap area are joined by hot vulcanization.

6. The tunnel construction joint waterproofing system according to claim 5, wherein, The overlap width between the waterstop and the joint is greater than or equal to 5 centimeters.

7. The tunneling joint waterproofing system according to claim 1, wherein, The waterstop includes a back-attached waterstop (13) installed between the initial support and the secondary lining of the tunnel.

8. The tunneling joint waterproofing system according to claim 7, wherein, The back-adhesive waterstop (13) includes: The first body (130) is laid along the length of the construction joint. The first body (130) includes a first surface and a second surface along the thickness direction. The second surface is in contact with the secondary lining. Multiple first ribs (131) are protruding from the second surface.

9. The tunneling joint waterproofing system according to claim 1, wherein, The waterstop includes a centrally embedded waterstop (14) installed in the secondary lining of the tunnel.

10. The tunnel construction joint waterproofing system according to claim 9, wherein, The embedded waterstop (14) includes: The second body (140) is laid along the length of the construction joint; Multiple second ribs (141) are protruding on both sides of the second body (140) along the thickness direction.

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