Damping self-anchoring waterproof device for tongue-and-groove joint of prefabricated comprehensive pipe gallery

Abstract

The utility model discloses a prefabricated comprehensive pipe gallery tongue-and-groove joint damping self-anchoring waterproof device which comprises a first pipe gallery and a second pipe gallery, and a damping self-anchoring waterproof device is arranged at the connecting position between a pipe gallery adapting joint at one end of the first pipe gallery and a pipe gallery inserting joint at one end of the second pipe gallery. The shock-absorbing self-anchoring waterproof device is composed of a laminated shock-absorbing flat plate, a self-anchoring anti-falling hoop, a first lead core water-stopping rubber strip, a second lead core water-stopping rubber strip and a steel bar. According to the lead core water-stopping rubber strip, the lead core column is arranged in the composite water-stopping rubber strip, the rigidity of the composite water-stopping rubber strip can be improved, and the situation that the water-stopping effect is lost due to excessive deformation is prevented; the laminated damping flat plate can serve as a second waterproof barrier of the pipe gallery connector, grouting is not needed, the construction progress is accelerated, and green construction is achieved; and the self-anchoring anti-falling hoop is adopted, so that the damage effect on water prevention caused by vertical relative rotation of the pipe gallery can be resisted.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorption and waterproofing for socket joints of utility tunnels, and particularly relates to a shock absorption, self-anchoring and waterproofing device for socket joints of prefabricated integrated utility tunnels. Background Technique

[0002] As a public tunnel for centralized laying of municipal pipelines, the underground integrated utility tunnel can effectively solve the stubborn "urban diseases" brought by traditional pipeline laying. Joint waterproofing is a key technical problem for prefabricated assembled integrated utility tunnels. The form of the waterstop belt, the waterstop effect, etc. are important current research directions. Previously, the waterstop rubber strip was also installed at the socket and spigot of the socket joint of the utility tunnel. The specification stipulates that the interface stress of the waterstop rubber strip is 1.5 MPa, and currently the deformation amount is also used to control this stress. The current products cannot resist the uneven settlement caused by large earthquakes (at most they can resist about 1 cm of settlement), and cannot resist horizontal displacement and vertical relative angular deformation. Currently, a second line of defense for waterproofing is achieved by waterstop grouting at the socket joint.

[0003] Currently, prestressed tensioning holes are set at the four axils of each utility tunnel chamber to achieve the segment tensioning design. The purpose of this design is to make the axial stress of the joints of each section of the utility tunnel reach the set value, and the joints are tightly combined together. By tensioning the prestressed steel bars, the deformation amount of the rubber strip at the joint reaches the design requirements, and finally the waterstop effect is achieved. However, this design cannot achieve the purpose of earthquake resistance.

[0004] Currently, for the joints of assembled integrated utility tunnels, mainly flat joints or socket joints are used. The waterstop effect of the socket joint is better, but the used waterstop rubber strip is prone to deformation under the action of earthquakes and loses the waterstop effect. And currently, in addition to using a composite waterstop rubber strip for waterproofing at the joint, grouting is also carried out inside the joint to achieve the second line of waterproofing effect. Grouting is carried out through the steel pipe grouting hole, and the prefabricated grouting hole is more troublesome. The construction process also requires grouting maintenance, the construction is more complex and cumbersome, not environmentally friendly, and the waterstop effect is poor. And under the action of earthquakes, it is difficult to resist the damage brought by dynamic actions, including the damage caused by large horizontal and vertical displacements and vertical relative rotations. Therefore, a shock absorption, self-anchoring and waterproofing device for socket joints of prefabricated integrated utility tunnels is provided. Content of the Utility Model

[0005] The purpose of the utility model is to aim at the defects of the prior art and provide a shock absorption, self-anchoring and waterproofing device for socket joints of prefabricated integrated utility tunnels to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a shock absorption, self-anchoring and waterproofing device for socket joints of prefabricated integrated utility tunnels, including a first utility tunnel and a second utility tunnel, and a shock absorption, self-anchoring and waterproofing device is arranged at the connection between the tunnel receiving joint at one end of the first utility tunnel and the tunnel insertion joint at one end of the second utility tunnel;

[0007] The shock-absorbing self-anchoring waterproof device is composed of a laminated shock-absorbing plate, a self-anchoring anti-detachment hoop, a first lead core water-stopping rubber strip, a second lead core water-stopping rubber strip and steel bars;

[0008] A self-anchoring groove is provided in the middle of the pipe gallery receiving joint, a first water-stopping groove is provided on the top of one side of the pipe gallery receiving joint, a second water-stopping groove is provided on the bottom of one side of the pipe gallery receiving joint, a laminated shock-absorbing plate is installed in the middle of the pipe gallery plug-in joint, a self-anchoring anti-detachment hoop is installed in the middle of the laminated shock-absorbing plate, one end of the self-anchoring anti-detachment hoop is inserted into the self-anchoring groove, the self-anchoring anti-detachment hoop is connected to the steel bars reserved on the pipe gallery plug-in joint, a first lead water-stopping rubber strip matching the first water-stopping groove is connected to the top of one side of the pipe gallery plug-in joint, and a second lead water-stopping rubber strip matching the second water-stopping groove is connected to the bottom of one side of the pipe gallery plug-in joint.

[0009] As a preferred technical solution of the utility model, the first lead core water-stop rubber strip and the second lead core water-stop rubber strip are both composed of a lead core column and a composite water-stop rubber strip, and the lead core column is arranged inside the composite water-stop rubber strip.

[0010] As a preferred technical solution of the utility model, the cross-section of the first lead water-stop strip and the second lead water-stop strip is trapezoidal, and the cross-section height is 45-50mm. The lead columns are provided with a plurality of lead water-stop strips and inserted into the first lead water-stop strip and the second lead water-stop strip at equal distances. The first lead water-stop strip and the second lead water-stop strip are connected to the pipe gallery plug-in joint by industrial glue.

[0011] As a preferred technical solution of the utility model, the laminated shock-absorbing flat plate is made of a plurality of steel plates and rubber layers, and the bottom steel plate of the laminated shock-absorbing flat plate is fixed to the tongue and groove of the plug-in joint of the integrated pipe gallery by expansion screws.

[0012] As a preferred technical solution of the utility model, one end of the self-anchoring anti-detachment hoop passes through the middle of the laminated shock-absorbing plate and is connected to the steel bars reserved in the pipe gallery plug-in joint by welding.

[0013] As a preferred technical solution of the utility model, prestressed steel bars are connected to the pipe gallery joints, and the inner walls of the first pipe gallery and the second pipe gallery are connected via the prestressed steel bars.

[0014] As a preferred technical solution of the present utility model, stress-bearing steel bars are provided inside the first pipe gallery and the second pipe gallery.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model adopts a lead core water stop rubber strip, which solves the problem that the existing composite water stop rubber strip has no lead core column inside and cannot achieve the purpose of shock absorption and energy dissipation to a great extent. This lead core water stop rubber strip places the lead core column inside the composite water stop rubber strip, which can increase the stiffness of the composite water stop rubber strip and prevent the loss of water stop effect due to excessive deformation.

[0017] 2. The utility model adopts a laminated shock absorption flat plate: a laminated shock absorption flat plate made of steel plate and rubber is first used at the pipe gallery joint. The steel plate can effectively increase the stiffness in the vertical section, and the rubber can play the role of absorbing energy and effectively damping vibration. The combination of the two, under the effective action of its surface and the pipe gallery joint, can serve as the second waterproof barrier of the pipe gallery joint without grouting, speeding up the construction progress and realizing green construction.

[0018] 3. The utility model adopts a self-anchoring anti-disconnection hoop: at the socket joint of the pipe gallery, a self-anchoring anti-disconnection hoop is fixed. Its material is steel. One end is welded and fixed to the reserved steel bars at the pipe gallery insertion joint, and the other end is placed in the anti-disconnection groove. The cross-sectional size of the anti-disconnection groove depends on the local seismic fortification intensity. Since it is located at the inclined socket joint of the joint, when sliding occurs on the parallel contact surface, it can not only offset the damage caused by uneven settlement, but also eliminate the damage stress caused by the horizontal relative displacement of the two contact pipe gallery segments; it can also resist the damage to the waterproofing caused by the vertical relative rotation of the pipe gallery. Description of the Drawings

[0019] Figure 1 It is a position diagram of the shock absorption self-anchoring waterproof device of the utility model at the socket joint of the precast comprehensive pipe gallery;

[0020] Figure 2 It is a schematic structural diagram of the lead core water stop rubber strip of the utility model;

[0021] Figure 3 It is a schematic structural diagram of the shock absorption self-anchoring waterproof device of the utility model;

[0022] Figure 4 It is a front elevation diagram of the shock absorption self-anchoring waterproof joint of the precast comprehensive pipe gallery of the utility model;

[0023] Figure 5 It is a three-dimensional diagram of the shock absorption self-anchoring waterproof joint of the precast comprehensive pipe gallery of the utility model.

[0024] In the figure: 1. Shock-absorbing self-anchoring waterproof device; 2. First pipe gallery; 3. Second pipe gallery; 4. Pipe gallery connection joint; 5. Pipe gallery insertion joint; 6. Prestressed steel bars; 7. Stress-bearing steel bars; 101. Laminated shock-absorbing flat plate; 102. Self-anchoring anti-disengagement hoop; 103. First water-stop groove; 104. First lead core water-stop rubber strip; 105. Self-anchoring groove; 106. Second water-stop groove; 107. Second lead core water-stop rubber strip; 108. Steel bars; 1701. Lead core column; 1702. Composite water-stop rubber strip. Detailed implementation mode

[0025] The following elaborates on the preferred embodiments of the present utility model in conjunction with the attached drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model.

[0026] Embodiment: Please refer to Figures 1-5 , the present utility model provides a technical solution: a shock-absorbing self-anchoring waterproof device for the socket joint of a precast integrated pipe gallery, including a first pipe gallery 2 and a second pipe gallery 3. A shock-absorbing self-anchoring waterproof device 1 is provided at the connection between the pipe gallery connection joint 4 at one end of the first pipe gallery 2 and the pipe gallery insertion joint 5 at one end of the second pipe gallery 3, which is used for shock absorption and waterproofing;

[0027] The shock-absorbing self-anchoring waterproof device 1 is composed of a laminated shock-absorbing flat plate 101, a self-anchoring anti-disengagement hoop 102, a first lead core water-stop rubber strip 104, a second lead core water-stop rubber strip 107 and steel bars 108;

[0028] A self-anchoring groove 105 is provided in the middle of the pipe gallery connection joint 4. A first water-stop groove 103 is provided at the top of one side of the pipe gallery connection joint 4. A second water-stop groove 106 is provided at the bottom of one side of the pipe gallery connection joint 4. A laminated shock-absorbing flat plate 101 is installed in the middle of the pipe gallery insertion joint 5. A self-anchoring anti-disengagement hoop 102 is installed in the middle of the laminated shock-absorbing flat plate 101. One end of the self-anchoring anti-disengagement hoop 102 is inserted into the self-anchoring groove 105. The self-anchoring anti-disengagement hoop 102 is connected to the steel bars 108 reserved on the pipe gallery insertion joint 5. A first lead core water-stop rubber strip 104 matching the first water-stop groove 103 is connected to the top of one side of the pipe gallery insertion joint 5. A second lead core water-stop rubber strip 107 matching the second water-stop groove 106 is connected to the bottom of one side of the pipe gallery insertion joint 5.

[0029] Both the first lead core water-stop rubber strip 104 and the second lead core water-stop rubber strip 107 are composed of a lead core column 1701 and a composite water-stop rubber strip 1702, and the lead core column 1701 is arranged inside the composite water-stop rubber strip 1702.

[0030] The cross-section of the first lead water-stop rubber strip 104 and the second lead water-stop rubber strip 107 is trapezoidal, and the cross-section height is 45-50 mm. The lead columns 1701 are provided with a plurality of lead columns 1701 which are inserted into the first lead water-stop rubber strip 104 and the second lead water-stop rubber strip 107 at equal distances. The first lead water-stop rubber strip 104 and the second lead water-stop rubber strip 107 are connected to the pipe gallery plug-in joint 5 by industrial glue.

[0031] The laminated shock-absorbing plate 101 is made of a plurality of steel plates and rubber layers. The bottom steel plate of the laminated shock-absorbing plate 101 is fixed to the tongue and groove of the plug-in joint of the integrated pipe gallery by expansion screws.

[0032] One end of the self-anchoring hoop 102 passes through the middle of the laminated shock-absorbing plate 101 and is connected to the steel bar 108 reserved in the pipe gallery plug-in joint 5 by welding.

[0033] The inner walls of the first pipe gallery 2 and the second pipe gallery 3 are connected by prestressed steel bars 6 .

[0034] Working principle: A prefabricated integrated pipe gallery tongue-and-groove joint shock-absorbing self-anchoring waterproof device, such as Figure 1 Shown is a cross-sectional view of the specific installation position of the shock-absorbing self-anchoring waterproof device at the corridor joint. The device is installed and fixed to the corridor plug-in joint. It must be installed all around the corridor joint, and self-anchoring grooves and water-stop grooves are reserved at the corresponding positions of the joints.

[0035] like Figure 2 The structure of the lead core waterproof strip is shown, which is composed of a lead core column 1701 and a composite waterproof strip 1702. The composite waterproof strip has a trapezoidal cross section with a cross-sectional height of 45 mm, and a lead core column is inserted at a certain interval. The function of the lead core column 1701 is to absorb the energy transmitted by the earthquake, and due to its large axial stiffness, it can effectively support the waterproof strip to prevent it from losing the waterproof effect due to excessive displacement and deformation.

[0036] like Figure 3The structural schematic diagram of the shock-absorbing self-anchoring waterproof device is shown. It consists of a lead-core water-stop rubber strip, a laminated shock-absorbing flat plate 101, and a self-anchoring anti-disengagement hoop 102. The lead-core water-stop rubber strip is connected to the socket joint through industrial glue, and a water-stop groove is reserved at the receiving joint. By cooperating with the lead-core water-stop rubber strip and the water-stop groove, the stress applied to the top surface of the water-stop rubber strip is controlled by the deformation amount to be 1.5 MPa. The laminated shock-absorbing flat plate 101 is made of multiple layers of steel plates and rubber laminated together. The steel plates have sufficient stiffness to play a supporting role, while the rubber plays a role in shock absorption and energy dissipation. The combination of the two gives it sufficient stiffness in the vertical plane and plays a role in energy dissipation and shock absorption in the parallel plane. Moreover, the pressure between the receiving joint and the socket joint can also make it have a good waterproof effect. After the lead-core water-stop rubber strip is damaged, this laminated shock-absorbing flat plate can also play the role of the second line of defense for waterproofing, and can also replace the internal waterproof grouting, making the construction simple and improving the reliability of the second line of defense for waterproofing. During construction, the bottom steel plate of the laminated shock-absorbing flat plate 101 is fixed to the spigot of the integrated pipe gallery socket joint by using expansion bolts.

[0037] The self-anchoring anti-disengagement hoop 102 is placed in the middle of the laminated shock-absorbing flat plate 101. During construction, one end of it is welded and fixed to the reserved steel bar 108 of the pipe gallery joint, and the other end is placed in the self-anchoring groove 105. When a major earthquake occurs, different precast pipe gallery segments have uneven settlement, large horizontal relative displacement, and vertical rotation. Due to the self-anchoring anti-disengagement hoop 102 inside the shock-absorbing self-anchoring waterproof device 1, even if it slides a certain distance along the contact surface, the self-anchoring anti-disengagement hoop 102 can still be in the self-anchoring groove 105, ensuring effective anchoring at the spigot of the pipe gallery joint and achieving effective waterproofing for uneven settlement and large horizontal relative displacement under a major earthquake. And due to its anchoring effect, it can effectively resist the vertical rotation of the pipe gallery and prevent the waterproof failure caused by the vertical rotation of the pipe gallery.

[0038] Figure 4 It is the elevation view of the shock-absorbing self-anchoring waterproof joint of the precast integrated pipe gallery. Looking at the elevation of the socket joint, there are two lead-core water-stop rubber strips fixed through industrial glue. In the middle of the outer wall, there is also a laminated shock-absorbing flat plate 101, and the bottom steel plate is fixed to the pipe gallery interface by expansion bolts. The self-anchoring anti-disengagement hoop 102 is embedded in the middle of the laminated shock-absorbing flat plate 101, and the self-anchoring anti-disengagement hoop 102 is welded and fixed to the reserved steel bar of the pipe gallery joint.

[0039] The prestressed steel bars in the above figures are at the axillary angle joint and are effectively anchored. By applying prestress, effective biting between the receiving joint and the socket joint of the pipe gallery is achieved, and effective stress between the lead-core water-stop rubber strip and the water-stop groove is achieved through the deformation amount.

[0040] The above embodiments only illustrate the implementation modes of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A prefabricated integrated pipe gallery tongue-and-groove joint shock-absorbing self-anchoring waterproof device, comprising a first pipe gallery (2) and a second pipe gallery (3), characterized in that: A shock-absorbing self-anchoring waterproof device (1) is provided at the connection between the pipe gallery receiving joint (4) at one end of the first pipe gallery (2) and the pipe gallery plug-in joint (5) at one end of the second pipe gallery (3); The shock-absorbing self-anchoring waterproof device (1) is composed of a laminated shock-absorbing flat plate (101), a self-anchoring anti-detachment hoop (102), a first lead core waterproof rubber strip (104), a second lead core waterproof rubber strip (107) and a steel bar (108); A self-anchoring groove (105) is provided in the middle of the pipe gallery receiving joint (4), a first water stop groove (103) is provided at the top of one side of the pipe gallery receiving joint (4), a second water stop groove (106) is provided at the bottom of one side of the pipe gallery receiving joint (4), a laminated shock-absorbing plate (101) is installed in the middle of the pipe gallery plug-in joint (5), a self-anchoring anti-detachment hoop (102) is installed in the middle of the laminated shock-absorbing plate (101), and the self-anchoring anti-detachment hoop ( One end of the self-anchoring groove (105) is inserted into the self-anchoring ring hoop (102), and the self-anchoring anti-dropping ring hoop (102) is connected to the steel bar (108) reserved on the pipe gallery plug-in joint (5). The top of one side of the pipe gallery plug-in joint (5) is connected to a first lead core water stop rubber strip (104) matching the first water stop groove (103), and the bottom of one side of the pipe gallery plug-in joint (5) is connected to a second lead core water stop rubber strip (107) matching the second water stop groove (106).

2. The shock-absorbing self-anchoring waterproof device for the prefabricated integrated pipe gallery tongue-and-groove joint according to claim 1 is characterized in that: The first lead core waterproofing strip (104) and the second lead core waterproofing strip (107) are both composed of a lead core column (1701) and a composite waterproofing strip (1702), and the lead core column (1701) is arranged inside the composite waterproofing strip (1702).

3. The shock-absorbing self-anchoring waterproof device for the prefabricated integrated pipe gallery tongue-and-groove joint according to claim 2 is characterized in that: The cross-section of the first lead waterproof strip (104) and the second lead waterproof strip (107) is trapezoidal, and the cross-section height is 45-50 mm. The lead column (1701) is provided with a plurality of lead waterproof strips (104) and the second lead waterproof strip (107) which are inserted into the first lead waterproof strip (104) and the second lead waterproof strip (107) at equal distances. The first lead waterproof strip (104) and the second lead waterproof strip (107) are connected to the pipe gallery plug-in joint (5) by industrial glue.

4. The shock-absorbing self-anchoring waterproof device for the prefabricated integrated pipe gallery tongue-and-groove joint according to claim 1 is characterized in that: The laminated shock-absorbing plate (101) is made of a plurality of steel plates and rubber laminates, and the bottom steel plate of the laminated shock-absorbing plate (101) is fixed to the tongue and groove of the plug-in joint of the integrated pipe gallery by means of expansion screws.

5. The shock-absorbing self-anchoring waterproof device for the prefabricated integrated pipe gallery tongue-and-groove joint according to claim 1 is characterized by: One end of the self-anchoring anti-detachment hoop (102) passes through the middle of the laminated shock-absorbing plate (101) and is connected to the steel bar (108) reserved in the pipe gallery plug-in joint (5) by welding.

6. The shock-absorbing self-anchoring waterproof device for the prefabricated integrated pipe gallery tongue-and-groove joint according to claim 1 is characterized in that: The pipe gallery receiving joint (4) is connected to a prestressed steel bar (6), and the inner walls of the first pipe gallery (2) and the second pipe gallery (3) are connected via the prestressed steel bar (6).

7. The shock-absorbing self-anchoring waterproof device for the prefabricated integrated pipe gallery tongue-and-groove joint according to claim 1 is characterized in that: Both the first pipe gallery (2) and the second pipe gallery (3) are provided with stress-bearing steel bars (7) inside.

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