Flexible anti-seismic protection pipe supporting structure of municipal engineering concrete pipeline and using method of flexible anti-seismic protection pipe supporting structure

Abstract

The invention relates to the technical field of pipeline seismic resistance, in particular to a flexible anti-seismic protective pipe supporting structure of a municipal engineering concrete pipeline and a using method thereof.The flexible anti-seismic protective pipe supporting structure comprises two opposite arc-shaped clamps, two flexible supporting rods arranged on the faces, away from each other, of the two arc-shaped clamps and supporting bases arranged at the bottom ends of the flexible supporting rods; a universal joint used for being connected with the arc-shaped clamp is arranged at the top end of the flexible supporting rod, a connecting rod fixedly connected with the arc-shaped clamp extends out of the spherical surface of the universal joint, and the flexible supporting rod is fixedly installed on the supporting base in an inclined mode. The arc-shaped clamp supports the small concrete pipeline through the universal joint and the flexible supporting rod, so that the small concrete pipeline is kept at the original position, the small concrete pipeline is prevented from deviating, and the technical problem that in the prior art, vibration causes the position of the small concrete pipeline to deviate, and normal use of a pipeline system is affected is solved. And the stability of the small concrete pipeline is improved.

Description

Technical Field

[0001] This application relates to the technical field of pipeline earthquake resistance, in particular to a flexible earthquake-resistant pipe support structure for municipal engineering concrete pipes and its usage method. Background Art

[0002] Municipal engineering concrete pipes are mainly made of materials such as cement, sand and gravel, and water, and are applicable to general water supply systems.

[0003] In the prior art, large concrete pipes do not require earthquake-resistant support because of their heavy self-weight and being buried underground. However, although small concrete pipes are buried underground, due to their light self-weight, the shock of an earthquake can still cause the position of small concrete pipes to shift. Among the existing solutions to the earthquake resistance problem of such small concrete pipes, a form of laying a soft cushion at the bottom of the pipe or filling a buffer layer around it is adopted to protect the bottom and the surrounding of the small concrete pipe. However, in the case of large vibrations, the cushion is easily damaged. The commonly used cushion is a cement-sand mixture. But when the cushion breaks under large vibrations, it is easy to break and will cause secondary damage to the pipe, and the cost is relatively high. This method is not suitable enough in areas where small vibrations often occur. The existing fixed connection forms of support frames can well solve this problem, but the common connection forms are all hard connections, that is, the support and the pipe are directly fixed. This will instead cause damage to the pipe in a vibrating environment, thus affecting the stable connection of the pipe and the normal use of the pipe system. Therefore, this application proposes a flexible earthquake-resistant pipe support structure for municipal engineering concrete pipes and its usage method. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of this application is to provide a flexible earthquake-resistant pipe support structure for municipal engineering concrete pipes, which is used to solve the technical problem that the shock in the prior art can cause the position of small concrete pipes to shift and affect the normal use of the pipe system.

[0005] The above purpose of this application is achieved through the following technical solutions: A flexible earthquake-resistant pipe support structure for municipal engineering concrete pipes includes two opposite arc-shaped clamps, two flexible support rods arranged on the opposite sides of the two arc-shaped clamps, and a support base arranged at the bottom end of the flexible support rods. A universal joint for connecting the arc-shaped clamps is provided at the top end of the flexible support rod. A connecting rod fixedly connecting the arc-shaped clamp extends out of the spherical surface of the universal joint. The flexible support rod is fixedly installed on the support base obliquely.

[0006] By adopting the above technical solution, with the flexible support rod provided with a universal joint, during construction, first, arc-shaped clamps are buckled on both sides of the small concrete pipe, and then the support base is placed under both sides of the small concrete pipe and fixed in the foundation pit, so that the flexible support rod is in an inclined state under both sides of the small concrete pipe to support the small concrete pipe. Thus, the support structure does not occupy the space on both sides of the small concrete pipe. In this way, after the small concrete pipe is embedded, both sides are supported by the soil, and the lower ends of both sides are supported by the support structure. When the seismic wave affects the small concrete pipe, the arc-shaped clamp supports the small concrete pipe through the universal joint and the flexible support rod, keeping it in its original position and preventing the small concrete pipe from shifting, achieving the purpose of solving the technical problem in the prior art that the oscillation will cause the position of the small concrete pipe to shift and affect the normal use of the pipe system, and improving the stability of the small concrete pipe.

[0007] Further, the flexible support rod includes a connecting block connected to the arc-shaped clamp through a universal joint, a mounting block installed on the support base, and a set of disc springs located between the connecting block and the mounting block and fixedly connected to the connecting block and the mounting block at both ends.

[0008] By adopting the above technical solution, through the setting of the set of disc springs, when the small concrete pipe vibrates slightly, the set of disc springs can provide flexible buffering, and when vibrating greatly, the set of disc springs increases the stiffness to limit the excessive deformation of the small concrete pipe, further improving the stability of the small concrete pipe.

[0009] Further, the arc-shaped clamp is mainly made of a composite material, and the composite material includes an outer elastic material layer, a middle grid reinforcement layer, and an inner viscoelastic damping layer.

[0010] By adopting the above technical solution, the elastic layer absorbs high-frequency vibrations, the grid layer disperses shear stresses, and the viscoelastic layer dissipates low-frequency energy, realizing the hierarchical dissipation of seismic energy and improving the support effect of the arc-shaped clamp on the small concrete pipe.

[0011] Further, a grid-like pattern is provided on the opposite surfaces of the two arc-shaped clamps.

[0012] By adopting the above technical solution, through the setting of the grid-like pattern, the friction between the arc-shaped clamp and the small concrete pipe can be enhanced, preventing the small concrete pipe from shaking greatly due to seismic waves.

[0013] Further, a leveling structure for automatically righting the support base is provided inside the support base.

[0014] Further, the leveling structure includes a hemispherical shell fixedly arranged inside the support base, a counterweight ball placed inside the hemispherical shell, and a friction gradient layer arranged at the edge of the hemispherical shell, and the friction coefficient of the friction gradient layer gradually increases from the inside to the outside.

[0015] By adopting the above technical solution, although the flexible support rod and the arc-shaped clamp improve the stability of the small concrete pipe, the seismic waves will also affect the support base. Such an impact may cause one end of the support base to tilt up, resulting in the support base being unable to provide effective support for the flexible support rod and the arc-shaped clamp when the secondary aftershock comes. As a result, the position of the small concrete pipe is prone to shift in the case of a secondary aftershock. The setting of the leveling structure solves this technical problem. Through the setting of the leveling structure, when there is no external force, the counterweight ball gathers at the lowest point (central balance area) of the hemispherical shell due to the action of gravity. At this time, the support surface of the support base is in a horizontal state, and the low-friction area of the friction gradient layer contacts the counterweight ball, and the support structure is in a stable state. When the seismic wave causes the small concrete pipe to tilt, the support base drives the hemispherical shell to generate an inclination angle accordingly. The counterweight ball rolls in the opposite direction of the inclination under the action of inertia force (for example, when the support base tilts to the left, the ball moves to the right edge area of the spherical shell). After the counterweight ball rolling in the opposite direction of the inclination enters the edge area, the friction coefficient of the contact surface significantly increases due to the design of the friction gradient layer, and the movement resistance of the counterweight ball gradually increases, and finally stops at the position where the friction coefficient matches its inertia force, forming a new center of gravity balance point. The new position of the counterweight ball changes the overall center of gravity distribution of the support base, and generates a reverse moment through the lever effect, so that the support surface of the support base gradually returns to the horizontal state, thereby preventing the situation of one end of the support base tilting up and improving the stability of the support base.

[0016] Further, a plurality of auxiliary balls with a volume smaller than that of the counterweight ball are also placed inside the hemispherical shell.

[0017] By adopting the above technical solution, through the setting of the auxiliary balls, when the counterweight ball rolls in the opposite direction of the inclination under the action of inertia force, the auxiliary balls freely roll in the central area, jointly pushing the support surface of the support base to gradually return to the horizontal state, ensuring that the counterweight ball can stably make the support surface of the support base gradually return to the horizontal state.

[0018] Further, installation structures are arranged on both sides of the outside of the support base, and the installation structures include fixing blocks fixedly arranged on both sides of the support base and fixing screws passing through the fixing blocks and threadedly connected to the fixing blocks.

[0019] By adopting the above technical solution, through the setting of the installation structure, when the staff installs the support base, they only need to turn the fixing screw and insert it into the bottom surface of the foundation pit. The setting of the fixing screw can also make the counterweight ball push the support surface of the support base to gradually return to the horizontal state, and the sharp part of the fixing screw is more likely to penetrate into the bottom surface of the foundation pit when the support base is subjected to thrust.

[0020] Furthermore, the arc-shaped clamp is equipped with a transporter, and a fitting box and a connecting bracket are installed on the transporter. A connecting piece with a connecting hole opened in the middle is provided at the top of the arc-shaped clamp.

[0021] By adopting the above technical solution, when the staff installs the support brackets for multiple small concrete pipes, they can move multiple support structures through the transporter, which is convenient for the staff to install the support structures.

[0022] The usage method of a flexible seismic protection pipe support structure for a municipal engineering concrete pipe described in the above technical solution includes the following steps: S1. Push the transporter to move to the installation position where the support structure needs to be installed for the small concrete pipe; S2. Remove two opposite arc-shaped clamps from the transporter; S3. Place the two arc-shaped clamps on both sides of the small concrete pipe respectively to clamp the small concrete pipe, and then take the fixing screws from the fitting box, turn the fixing screws and insert them into the bottom surface of the foundation pit to fix the support base.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: Through the setting of the arc-shaped clamp, the universal joint and the flexible support rod, during construction, first push the transporter to move to the installation position where the support structure needs to be installed for the small concrete pipe, then remove two opposite arc-shaped clamps from the transporter, then buckle the arc-shaped clamps on both sides of the small concrete pipe, then place the support base under both sides of the small concrete pipe and fix the support base in the foundation pit, so that the flexible support rod is in an inclined state under both sides of the small concrete pipe to support the small concrete pipe, and then take the fixing screws from the fitting box, turn the fixing screws and insert them into the bottom surface of the foundation pit to fix the support base, so that the support structure does not occupy the space on both sides of the small concrete pipe. In this way, after the small concrete pipe is embedded, both sides are supported by the soil, and the lower ends of both sides are supported by the support structure. When the seismic wave of the earthquake affects the small concrete pipe, the arc-shaped clamp supports the small concrete pipe through the universal joint and the flexible support rod to keep it in its original position and prevent the small concrete pipe from shifting, achieving the purpose of solving the technical problem that the oscillation in the prior art will cause the position of the small concrete pipe to shift and affect the normal use of the pipeline system, and improving the stability of the small concrete pipe. Description of the Drawings

[0024] Figure 1 is a schematic structural view of the support structure; Figure 2 is Figure 1 an enlarged view of part A in Figure 3 is a sectional view along line A-A in Figure 1 ; Figure 4 is Figure 3 an enlarged view of part B in Figure 5 is a specific structural view of the transporter.

[0025] Reference numerals: 1, arc clamp; 10, universal joint; 11, connecting rod; 12, mesh pattern; 13, connecting piece; 2, flexible support rod; 20, connecting block; 21, mounting block; 22, disc spring group; 3, support base; 4, leveling structure; 40, hemispherical housing; 41, counterweight ball; 42, friction gradient layer; 420, graphite lubricating layer; 421, ceramic particle layer; 422, rubber layer; 43, auxiliary ball; 5, mounting structure; 50, fixing block; 51, fixing screw; 6, transporter; 60, accessory box; 61, connecting bracket. Detailed implementation manners

[0026] The present application will be further described in detail below with reference to the accompanying drawings.

[0027] Example, refer to Figure 1 , Figure 2, A flexible seismic protection pipe support structure for municipal engineering concrete pipes, comprising two opposite arc-shaped clamps 1, two flexible support rods 2 arranged on the opposite sides of the two arc-shaped clamps 1, and a support base 3 arranged at the bottom ends of the flexible support rods 2. A universal joint 10 for connecting the arc-shaped clamps 1 is provided at the top end of the flexible support rod 2. A connecting rod 11 fixedly connecting the arc-shaped clamps 1 extends out of the spherical surface of the universal joint 10. The flexible support rod 2 is fixedly installed on the support base 3 in an inclined manner. During construction, by means of the flexible support rod 2 provided with the universal joint 10, first, the arc-shaped clamps 1 are buckled on both sides of the small concrete pipe, and then the support base 3 is placed under both sides of the small concrete pipe and fixed in the foundation pit, so that the flexible support rods 2 are in an inclined state under both sides of the small concrete pipe to support the small concrete pipe. Thus, the support structure does not occupy the space on both sides of the small concrete pipe. In this way, after the small concrete pipe is embedded, both sides are supported by the soil, and the lower ends of both sides are supported by the support structure. When the seismic wave affects the small concrete pipe, the arc-shaped clamp 1 supports the small concrete pipe through the universal joint 10 and the flexible support rod 2, keeping it in its original position and preventing the small concrete pipe from shifting, achieving the purpose of solving the technical problem in the prior art that the oscillation will cause the position of the small concrete pipe to shift and affect the normal use of the pipe system, and improving the stability of the small concrete pipe.

[0028] In this embodiment, the flexible support rod 2 includes a connection block 20 connected to the arc-shaped clamp 1 through the universal joint 10, an installation block 21 installed on the support base 3, and a disc spring group 22 located between the connection block 20 and the installation block 21 and fixedly connected to the connection block 20 and the installation block 21 at both ends. Through the setting of the disc spring group 22, when the small concrete pipe vibrates slightly, the disc spring group 22 can provide flexible buffering, and when vibrating greatly, the disc spring group 22 increases the stiffness to limit the excessive deformation of the small concrete pipe, further improving the stability of the small concrete pipe.

[0029] In this embodiment, the arc-shaped clamp 1 is mainly made of a composite material. The composite material includes an outer elastic material layer, a middle grid reinforcement layer, and an inner viscoelastic damping layer. The elastic layer absorbs high-frequency vibrations, the grid layer disperses shear stresses, and the viscoelastic layer consumes low-frequency energy, realizing the hierarchical dissipation of seismic energy and improving the support effect of the arc-shaped clamp 1 on the small concrete pipe.

[0030] In this embodiment, a grid-like pattern 12 is provided on the opposite side of the two arc-shaped clamps 1. Through the setting of the grid-like pattern 12, the friction between the arc-shaped clamp 1 and the small concrete pipe can be enhanced, preventing the small concrete pipe from shaking greatly due to seismic waves.

[0031] Although the flexible support rod 2 and the arc-shaped clamp 1 improve the stability of the small concrete pipe, the seismic waves can also affect the support base 3. Such an impact may cause one end of the support base 3 to tilt up, resulting in the support base 3 being unable to provide effective support for the flexible support rod 2 and the arc-shaped clamp 1 when the secondary aftershock comes. As a result, the position of the small concrete pipe is likely to shift during the secondary aftershock. To solve this technical problem, referring to Figure 3 , Figure 4 , in this embodiment, a leveling structure 4 for automatically straightening the support base 3 is provided inside the support base 3. The leveling structure 4 includes a hemispherical shell 40 fixedly arranged inside the support base 3, a counterweight ball 41 placed inside the hemispherical shell 40, and a friction gradient layer 42 arranged at the edge of the hemispherical shell 40 (mainly composed of a graphite lubricating layer 420 (low friction), a ceramic particle layer 421 (medium friction), and a rubber layer 422 (high friction)). The friction coefficient of the friction gradient layer 42 gradually increases from the inside to the outside. Through the setting of the leveling structure 4, when there is no external force, the counterweight ball 41 gathers at the lowest point (central balance area) of the hemispherical shell 40 due to the action of gravity. At this time, the support surface of the support base 3 is in a horizontal state, and the low-friction area of the friction gradient layer 42 contacts the counterweight ball 41, and the support structure is in a stable state. When the seismic wave causes the small concrete pipe to tilt, the support base 3 drives the hemispherical shell 40 to generate an inclination angle accordingly. The counterweight ball 41 rolls in the opposite direction of the tilt under the action of inertia force (for example, when the support base 3 tilts to the left, the ball moves to the right edge area of the spherical shell). After the counterweight ball 41 rolling in the opposite direction of the tilt enters the edge area, the friction coefficient of the contact surface significantly increases due to the design of the friction gradient layer 42, and the movement resistance of the counterweight ball 41 gradually increases. Finally, it stops at the position where the friction coefficient matches its inertia force, forming a new center of gravity balance point. The new position of the counterweight ball 41 changes the overall center of gravity distribution of the support base 3, and generates a reverse moment through the lever effect, so that the support surface of the support base 3 gradually returns to the horizontal state, thereby preventing the situation of one end of the support base 3 tilting up and improving the stability of the support base 3.

[0032] In this embodiment, a plurality of auxiliary balls 43 with a volume smaller than that of the counterweight ball 41 are also placed inside the hemispherical shell 40. Through the setting of the auxiliary balls 43, when the counterweight ball 41 rolls in the opposite direction of the tilt under the action of inertia force, the auxiliary balls 43 freely roll in the central area, jointly pushing the support surface of the support base 3 to gradually return to the horizontal state, ensuring that the counterweight ball 41 can stably make the support surface of the support base 3 gradually return to the horizontal state.

[0033] In this embodiment, mounting structures 5 are provided on both outer sides of the support base 3. The mounting structure 5 includes fixing blocks 50 fixedly arranged on both sides of the support base 3 and fixing screws 51 passing through the fixing blocks 50 and threadedly connected to the fixing blocks 50. Through the arrangement of the mounting structure 5, when the staff installs the support base 3, they only need to turn the fixing screws 51 to insert them into the bottom surface of the foundation pit. The setting of the fixing screws 51 can also make it easier for the sharp parts of the fixing screws 51 to penetrate into the bottom surface of the foundation pit when the counterweight balls 41 push the support surface of the support base 3 to gradually return to the horizontal state and the support base 3 is subjected to a thrust force.

[0034] Refer to Figure 5 In this embodiment, the arc-shaped clamp 1 is equipped with a transporter 6. An accessory box 60 and a connecting bracket 61 are installed on the transporter 6. A connecting piece 13 with a connecting hole opened in the middle is provided at the top of the arc-shaped clamp 1, enabling the staff to move multiple support structures through the transporter 6 when installing support brackets for multiple small concrete pipes, facilitating the installation of the support structures by the staff.

[0035] Specific implementation process: First, push the transporter 6 to move to the installation position where the support structure needs to be installed for the small concrete pipe. Then, take two opposite arc-shaped clamps 1 from the transporter 6, and place the two arc-shaped clamps 1 on both sides of the small concrete pipe to clamp the small concrete pipe respectively. Then, take the fixing screws 51 from the accessory box 60 and turn the fixing screws 51 to insert them into the bottom surface of the foundation pit to fix the support base 3, thus completing the installation of the support structure.

[0036] When the seismic waves of an earthquake affect the small concrete pipe, the arc-shaped clamp 1 supports the small concrete pipe through the universal joint 10 and the flexible support rod 2, keeping it in its original position and preventing the small concrete pipe from shifting. At the same time, the support base 3 drives the hemispherical shell 40 to tilt, causing the hemispherical shell 40 to have an inclination angle. The counterweight balls 41 roll in the opposite direction of the tilt under the action of inertia force (for example, when the support base 3 tilts to the left, the balls move towards the right edge area of the spherical shell). After the counterweight balls 41 rolling in the opposite direction of the tilt enter the edge area, the friction coefficient of the contact surface significantly increases due to the design of the friction gradient layer 42, and the movement resistance of the counterweight balls 41 gradually increases. Eventually, the counterweight balls 41 stop at the position where the friction coefficient matches their inertia force, forming a new center of gravity balance point. At this time, the auxiliary balls 43 freely roll in the central area, jointly pushing the support surface of the support base 3 to gradually return to the horizontal state. The new position of the counterweight balls 41 changes the overall center of gravity distribution of the support base 3, generating a reverse moment through the lever effect, making the support surface of the support base 3 gradually return to the horizontal state.

[0037] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of the application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A flexible seismic protection pipe support structure for a municipal engineering concrete pipe, characterized in that: The invention comprises two opposing arc-shaped clamps (1), two flexible support rods (2) arranged on opposite sides of the two arc-shaped clamps (1), and a support base (3) arranged at the bottom end of the flexible support rods (2), wherein a universal joint (10) for connecting to the arc-shaped clamps (1) is provided at the top end of the flexible support rods (2), a connecting rod (11) for fixedly connecting to the arc-shaped clamps (1) extends from the spherical surface of the universal joint (10), and the flexible support rod (2) is fixedly installed on the support base (3) in an inclined manner.

2. A flexible seismic protection pipe support structure for a municipal engineering concrete pipe according to claim 1, characterized in that: The flexible support rod (2) comprises a connection block (20) connected to the arc clamp (1) via a universal joint (10), a mounting block (21) mounted on the support base (3), and a butterfly spring group (22) located between the connection block (20) and the mounting block (21) and having two ends fixedly connected to the connection block (20) and the mounting block (21), respectively.

3. The flexible seismic protection pipe support structure for a municipal engineering concrete pipe according to claim 1 is characterized in that: The arc-shaped clamp (1) is mainly made of a composite material, which comprises an outer elastic material layer, a middle mesh reinforcement layer and an inner viscous damping layer.

4. The flexible seismic protection pipe support structure for a municipal engineering concrete pipe according to claim 1 is characterized in that: The two arc-shaped clips (1) have grid-like patterns (12) on opposite sides thereof.

5. The flexible seismic protection pipe support structure for a municipal engineering concrete pipe according to claim 1 is characterized in that: A leveling structure (4) for automatically returning the support base (3) is provided inside the support base (3).

6. The flexible seismic protection pipe support structure for a municipal engineering concrete pipe according to claim 5, characterized in that: The leveling structure (4) comprises a hemispherical shell (40) fixedly arranged inside the support base (3), a weighted ball (41) placed inside the hemispherical shell (40), and a friction gradient layer (42) arranged at the edge of the hemispherical shell (40), wherein the friction coefficient of the friction gradient layer (42) gradually increases from the inside to the outside.

7. The flexible seismic protection pipe support structure for concrete pipes in municipal engineering according to claim 6, characterized in that: A plurality of auxiliary balls (43) having a smaller volume than the counterweight balls (41) are also placed in the hemispherical shell (40).

8. The flexible seismic protection pipe support structure for a municipal engineering concrete pipe according to claim 1, characterized in that: Mounting structures (5) are provided on both sides of the outside of the support base (3), and the mounting structures (5) comprise fixing blocks (50) fixedly arranged on both sides of the support base (3) and fixing screws (51) passing through the fixing blocks (50) and being threadedly connected to the fixing blocks (50).

9. The flexible seismic protection pipe support structure for a municipal engineering concrete pipe according to claim 1, characterized in that: The arc-shaped clamp (1) is equipped with a trolley (6), on which an accessory box (60) and a connecting bracket (61) are installed. The top end of the arc-shaped clamp (1) is provided with a connecting piece (13) with a connecting hole in the middle.

10. A method for using a flexible seismic protection pipe support structure for a municipal engineering concrete pipe according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, pushing the haulage vehicle (6) to move to the installation position where the small concrete pipe needs to be installed with a supporting structure; S2, remove two opposing arc-shaped clamps (1) from the haulage vehicle (6); S3. Place two arc-shaped clamps (1) on both sides of the small concrete pipe to clamp the small concrete pipe, then take out the fixing screws (51) from the accessory box (60), screw the fixing screws (51) and insert them into the bottom surface of the foundation pit to fix the support base (3).

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