CN212742651U

CN212742651U - Novel anti-seismic energy dissipation support of urban comprehensive pipe gallery

Info

Publication number: CN212742651U
Application number: CN202021358499.0U
Authority: CN
Inventors: 刘中宪; 黄振恩; 黄磊; 吕杨; 边煜凯
Original assignee: Tianjin Chengjian University
Current assignee: Tianjin Chengjian University
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-03-19
Anticipated expiration: 2030-07-10

Abstract

The utility model discloses a novel antidetonation power consumption support of city utility tunnel belongs to utility tunnel's antidetonation structure device technical field, its characterized in that: including the support main part, the upper portion of support main part has the bearing face portion that is used for the bearing pipeline body, the support main part is equipped with the rigidity tractive spare that is used for the fixing support main part, the inside flexible tractive spare that has set up of support main part, the upper end of flexible tractive spare is used for just locating with pipeline body coupling bearing face portion, flexible tractive spare is including setting up cover body and setting in the support main part are in cover internal extension spring, extension spring's upper end and pipeline body coupling. The support can weaken the influence of earthquake on the pipeline body and improve the shock resistance of the pipeline in the underground comprehensive pipe gallery.

Description

Novel anti-seismic energy dissipation support of urban comprehensive pipe gallery

Technical Field

The utility model belongs to the technical field of utility tunnel's antidetonation structure device, especially, relate to a novel antidetonation power consumption support of city utility tunnel.

Background

The underground pipelines are 'qi and blood veins' of cities, tens of pipelines such as a large amount of rainwater, sewage, drinking water, natural gas and cables are buried in underground spaces in each city, and the underground pipelines are criss-cross to form a complex underground pipeline network system. With the advance of urbanization, the number of underground pipelines is increased, the interleaving among pipelines is complicated, and the management difficulty is increased. The dense and complicated underground pipelines cause great resistance to the development of urban underground space, and even many ground projects are influenced to a certain extent. A large number of practical cases show that whether the safety of the underground pipelines is related to whether the city can normally run or not, and once an accident occurs to some important underground pipelines, not only can partial functions of the city be paralyzed, huge economic loss is caused, and even a large number of casualties can be caused. Experience with a large number of developed cities in the world has shown that the health development of cities must rely on a safe and orderly underground pipeline system. The safety management of underground pipelines is a problem of strong comprehensiveness, wide related range and high complexity, and in recent years, China vigorously pushes the construction of sponge city underground comprehensive pipe galleries, aims at managing the urban underground pipelines safely and orderly, and provides guarantee for the healthy development of cities.

The pipeline laid in the underground comprehensive pipe gallery is composed of a plurality of sections of pipeline bodies, and belongs to a strip-shaped three-dimensional space artificial structure. Utility tunnel support is the pedestal that is used for supporting the pipeline body, anti-seismic performance is not fully considered to traditional utility tunnel pipeline body support, it is simple concrete structure mostly, very easily the fracture damage under the earthquake motion effect, cause the bearing capacity to descend by a wide margin and lose even, and traditional utility tunnel pipeline body support and the pipeline body between be connected very simplely, do not have the connection measure even a bit, under the effect of earthquake motion, the pipeline body has the possibility that breaks away from utility tunnel pipeline body support, be mostly rigid structure because of the pipeline body, in case there is some pipeline body to break away from utility tunnel pipeline body support, can lead to whole pipeline body structure dislocation fracture to appear, cause serious accident. In terms of the current situation, the seismic performance of the underground comprehensive pipe gallery pipeline body support structure with the traditional structure is poor, so that the significance of strengthening the seismic performance of the pipeline body support in the comprehensive pipe gallery is great.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a solve the novel antidetonation power consumption support of city utility tunnel of the poor problem of present utility tunnel anti-seismic performance.

The utility model discloses a realize like this, a novel antidetonation power consumption support of city utility tunnel, its characterized in that: including the support main part, the upper portion of support main part has the bearing face portion that is used for the bearing pipeline body, the support main part is equipped with the rigidity tractive spare that is used for the fixing support main part, the inside flexible tractive spare that has set up of support main part, the upper end of flexible tractive spare is used for just locating with pipeline body coupling bearing face portion, flexible tractive spare is including setting up cover body and setting in the support main part are in cover internal elastic element, elastic element's upper end and pipeline body coupling.

The utility model discloses flexible tractive spare has in the support that the pipeline body supported the usefulness, and flexible tractive spare is connected between support main part and the pipeline body, can increase substantially the anti-seismic performance of utility tunnel interior conduit, can effectively protect the pipeline in the underground pipe gallery when the earthquake takes place, absorbs and consumes the energy of earthquake wave, reduces the vibration range that the pipeline body produced because of the earthquake, reduces the acceleration of motion that the earthquake made the pipeline body produce, makes the pipeline not deviate from the support under the earthquake dynamic effect. Avoid major public accidents and reduce the loss of personnel and property.

In the above technical solution, preferably, the support body includes a cushion layer, a cushion cap and a support body, the cushion cap is disposed above the cushion layer, the support body is disposed above the cushion cap, the rigid pulling member is fixed to the cushion cap, and the flexible pulling member is embedded in the cushion cap.

In the above technical solution, preferably, the upper portion of the bearing platform and the supporting body together form a circular arc-shaped bearing face, the sleeve body is a tubular sleeve body embedded in the bearing platform, and the elastic element arranged in the sleeve body is an extension spring coaxial with the sleeve body.

In the above technical solution, preferably, the flexible pipe comprises at least three flexible pulling parts, and an axis extension line of the sleeve body passes through a center of mass of the pipe body. When the earthquake takes place, the pipeline body can receive the pulling force of two flexible traction pieces at least no matter what kind of direction the earthquake moved, and the pipeline that these flexible traction pieces pulling force can make the pipeline body constitute is stabilized on the novel antidetonation power consumption support of city utility tunnel.

In the above technical scheme, preferably, the bearing platform is internally embedded with ribs which correspond to the flexible traction pieces one by one and have the same extending direction with the pipeline body, and the lower end of the sleeve body of the flexible traction piece is connected with the corresponding ribs. The rib not only can improve the overall strength of the bearing platform, but also can make the stress capacity of the flexible traction piece stronger.

In the above technical scheme, preferably, the rib is an i-steel, the rib fixes a hollow hemisphere, the lower end of the sleeve body is connected with the hollow hemisphere, the lower end of the extension spring is connected with the hollow hemisphere, and the upper end of the extension spring is connected with a solid hemisphere for fixing a pipeline body. The shape of the I-shaped steel can ensure that the I-shaped steel is more stable in the bearing platform made of reinforced concrete. The hollow hemispheroid enables the tensile force borne by the extension spring to be dispersed and transmitted to the I-shaped steel, so that the connection reliability between the I-shaped steel and the extension spring can be improved. The solid hemispheroid of extension spring upper end connection can be with extension spring pulling force dispersion, the connection of protection extension spring and pipeline body.

In the above technical scheme, preferably, the elastic filling medium is filled in the sleeve body, so that the earthquake energy can be rapidly consumed through mutual friction and extrusion between the elastic filling medium and the inner wall of the sleeve body, and the tensile force of the tension spring can be shared through compression rebound, thereby ensuring that the pipeline body does not separate from the support under the foreseeable severe earthquake.

In the above technical solution, preferably, an arc end cover with an inward arc top is fixed at the upper end of the sleeve body. The arc top surface of the arc end cover can effectively disperse the pressure transmitted by the extension spring and the vulcanized butadiene rubber particles, and the arc end cover is guaranteed not to be damaged under the ordinary vibration amplitude. When the shock is caused by strong earthquake or even blasting impact exceeding the expectation, the extension spring can rapidly extrude vulcanized butadiene rubber particles on the inner side of the sleeve body, and then impact the arc-shaped end cover under the protection of the vulcanized butadiene rubber particles, so that a large amount of vibration energy is consumed in the process. If the vibration does not stop, the extension spring breaks through the arc-shaped end cover and can further enter a yield state, the extension spring in the yield state can convert a large amount of vibration energy into plastic deformation energy, and further the vibration borne by the pipeline body is greatly reduced until the vibration disappears, so that the damping and energy consumption effects are realized.

In the above technical scheme, preferably, the rigid pulling piece is a Z-shaped steel, the Z-shaped steel includes an upper hook portion, a pulling portion and a lower hook portion, the upper hook portion of the pulling piece is embedded in the bearing platform, the pulling portion is located on the side portion of the bearing platform, and the lower hook portion is provided with a bolt hole. Z style of calligraphy steel is inlayed admittedly in the cushion cap, and accessible high strength bolt and the butadiene rubber gasket after vulcanizing fix support main part and utility tunnel bottom plate as a whole, and earthquake moves temporarily, and the butadiene rubber gasket after vulcanizing will protect high strength bolt and Z style of calligraphy steel, makes high strength bolt and Z style of calligraphy steel can keep normal operating condition. The vertical traction part of the Z-shaped steel can limit the relative displacement between the bearing platform and the cushion layer caused by different materials, and the integrity of the support body is enhanced.

In the above technical solution, preferably, a horizontal height of the upper hook is higher than a horizontal height of the rib. When earthquake happens, the flexible traction piece pulls the I-shaped steel to have upward component force on the bearing platform, the upper hook part of the Z-shaped steel has downward component force on the bearing platform, and the bearing platform part between the two is in a pressed state, so that the bearing platform is very favorable for the stressed state of the bearing platform, and the effect of preventing the reinforced concrete bearing platform from cracking can be achieved.

Drawings

FIG. 1 is a schematic view of the mounting structure of the support of the present invention;

FIG. 2 is a schematic structural view of a flexible pulling member of the present invention;

fig. 3 is a schematic view of the connection structure between the middle rigid pulling member and the bottom plate of the present invention.

In the figure, 1, a support main body; 1-1, cushion layer; 1-2, bearing platform; 1-3, a support body; 2. a pipe body; 3. a base plate; 4. a rigid pull member; 4-1, an upper hook part; 4-2, a pulling part; 4-3, a lower hook part; 5. a butadiene rubber gasket; 6. a flexible pull member; 6-1, a sleeve body; 6-2, an extension spring; 7. a rib; 8. a hollow hemisphere; 9. a solid steel ball; 10. a solid hemisphere; 11. vulcanizing the butadiene rubber particles; 12. an arc-shaped end cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

For solving the drawback that present utility tunnel anti-seismic performance is poor, the utility model particularly provides a novel antidetonation power consumption support of city utility tunnel, this support can weaken the earthquake to the influence of the pipeline body, improves utility tunnel's shock resistance. For further explanation of the structure of the present invention, the following detailed description is made with reference to the accompanying drawings:

referring to fig. 1-3, a novel anti-seismic energy dissipation support for an urban comprehensive pipe gallery comprises a support body 1, wherein a supporting face portion for supporting a pipeline body 2 is arranged at the upper portion of the support body 1. Specifically, the support main body 1 comprises a cushion layer 1-1, a bearing platform 1-2 and a supporting body 1-3, wherein the bearing platform 1-2 is arranged above the cushion layer 1-1, and the supporting body 1-3 is arranged above the bearing platform 1-2. The cushion layer 1-1 is made of asphalt concrete, the bearing platform 1-2 is made of reinforced concrete, and the supporting body 1-3 is made of vulcanized butadiene rubber. The upper part of the bearing platform 1-2 and the supporting body 1-3 jointly form an arc-shaped bearing face. The bearing face is attached to the outer wall of the tubular pipe body 2. The asphalt concrete cushion layer 1-1 is located at the lowest part of the support main body 1 and is in direct contact with the surface of the bottom plate 3 of the comprehensive pipe gallery, and the cushion layer 1-1 can buffer earthquake motion, reduce earthquake motion amplitude and reduce earthquake motion acceleration.

The mount body 1 is provided with a rigid pull 4 for fixing the mount body 1. In this embodiment, the rigid pulling part 4 is a Z-shaped steel, and the Z-shaped steel includes an upper hook part 4-1, a pulling part 4-2, and a lower hook part 4-3. The upper hook part 4-1 and the lower hook part 4-3 are horizontal parallel steel plates, and the drawing part 4-2 is a vertical steel plate which is arranged between the upper hook part and the lower hook part and is vertical to the upper hook part and the lower hook part. An upper hook part 4-1 of the rigid traction piece 4 is embedded in the bearing platform 1-2, the traction part 4-2 is positioned at the side part of the bearing platform 1-2, and a bolt hole is arranged on a lower hook part 4-3. The lower hook part 4-3 of the Z-shaped steel fixes the support main body 1 and the bottom plate 3 of the comprehensive pipe gallery into a whole through the high-strength bolt and the vulcanized butadiene rubber gasket 5, and the vulcanized butadiene rubber gasket 5 can protect the Z-shaped steel and the high-strength bolt. The traction part of the Z-shaped steel can limit the relative displacement between the bearing platform 1-2 and the cushion layer 1-1 caused by different materials, the integrity of the support main body 1 is enhanced, and the inner side of the corner of the Z-shaped steel is subjected to arc transition treatment, so that the phenomenon of serious stress concentration at the corner can be avoided.

The support body 1 is internally embedded with a flexible traction piece 6. The upper end of the flexible traction piece 6 is used for being connected with the pipeline body 2 and is arranged on the bearing face. The flexible traction piece 6 comprises a sleeve body 6-1 embedded in the support main body 1 and an elastic element arranged in the sleeve body 6-1. In this embodiment, the elastic element is an extension spring 6-2, and the upper end of the extension spring 6-2 is connected with the pipe body 2. Specifically, the sleeve body 6-1 is embedded and fixed inside the bearing platform 1-2 and is a section of stainless steel pipe. The sleeve body 6-1 is used for separating the extension spring 6-2 from the reinforced concrete, so that the prefabrication construction is convenient. An extension spring 6-2 which is coaxial with the sleeve body 6-1 is arranged in the sleeve body 6-1. In the embodiment, the flexible pipe comprises three flexible traction pieces, and the axis extension line of the sleeve body 6-1 passes through the mass center of the pipe body. When the earthquake takes place, the pipeline body 2 can receive the pulling force of two flexible traction pieces no matter what kind of direction the earthquake moved, and the pipeline that these flexible traction pieces 6 pulling force can make the pipeline that the pipeline body 2 constitutes is stabilized on the novel antidetonation power consumption support of city utility tunnel.

The rough surface of the support body 1-3 is attached to the pipeline body 2, when the pipeline body 2 rotates, great friction force is generated, the energy of earthquake motion is converted into heat energy, the heat energy is rapidly dissipated through heat transfer with a shady and cool environment of an underground space, and when the pipeline body 2 translates, the support body 1-3 limits the movement of the pipeline body 2 through elastic deformation and forms a synergistic effect with the flexible traction piece 6.

Ribs 7 which correspond to the flexible traction pieces 6 one by one and have the same extending direction with the pipeline body 2 are embedded in the bearing platform 1-2, and the lower ends of sleeve bodies 6-1 of the flexible traction pieces 6 are connected with the corresponding ribs 7. Specifically, the rib 7 is an i-steel.

In this embodiment, the specific connection mode between the rib 7 and the flexible pulling member 6 and the pipeline body 2 is as follows: the I-steel as the rib 7 fixes the hollow hemisphere 8. The hollow hemisphere 8 is a steel hemisphere and is welded on the I-steel. The hollow hemisphere 8 is provided with a hole for the lower end of the extension spring 6-2 to pass through, and the lower end of the extension spring 6-2 passes through the hollow hemisphere 8 and then is welded with a solid steel ball 9 arranged at the inner side of the hollow hemisphere 8, so that the extension spring 6-2 is connected with the hollow hemisphere 8. The lower end of the sleeve body 6-1 is connected with the hollow hemispheroid 8, and particularly, the lower end of the sleeve body 6-1 is welded with the hollow hemispheroid 8. The upper end of the extension spring 6-2 is connected with a solid hemisphere 10 used for fixing the pipeline body 2. The solid hemisphere 10 is a steel solid hemisphere, is welded at the upper ends of the pipeline body 2 and the extension spring 6-2, and is used for connecting the extension spring 6-2 and the pipeline body 2.

The shape of the I-shaped steel can ensure that the I-shaped steel is more stable in the bearing platform made of reinforced concrete. The hollow hemispheroid 8 enables the tensile force borne by the extension spring 6-2 to be dispersed and transmitted to the I-steel, so that the connection reliability between the I-steel and the extension spring 6-2 can be improved. The solid hemispheroid 10 connected with the upper end of the extension spring 6-2 can disperse the tensile force of the extension spring 6-2 and protect the connection between the extension spring 6-2 and the pipeline body 2.

In this embodiment, the horizontal height of the upper hook is higher than the horizontal height of the rib 7. When earthquake happens, the rib 7 is pulled by the flexible pulling piece 6 to have upward component force on the bearing platform 1-2, the upper hook part 4-1 of the rigid pulling piece 4 has downward component force on the bearing platform 1-2, and the bearing platform part between the flexible pulling piece and the bearing platform is in a pressed state, so that the bearing platform is very favorable for the stressed state of the bearing platform 1-2, and the effect of preventing the reinforced concrete bearing platform from cracking can be achieved.

In this embodiment, the elastic filling medium is filled in the sleeve body 6-1, and in this embodiment, the elastic filling medium is vulcanized butadiene rubber particles 11. Because the vulcanized butadiene rubber particles 11 are small in rigidity, high in wear resistance, high in pressure resistance and high in elasticity, the earthquake energy can be rapidly consumed through mutual friction and extrusion with the inner wall of the sleeve body 6-1, and the tensile force of the tension spring 6-2 can be shared through compression rebound, so that the pipeline body 2 is ensured not to separate from a support under the foreseeable large earthquake. An arc end cover 12 with an inward arc top is fixed at the upper end of the sleeve body 6-1. The arc top surface of the arc end cover 12 can effectively disperse the pressure transmitted by the extension spring 6-2 and the vulcanized butadiene rubber particles 11, and the arc end cover 12 is guaranteed not to be damaged under the ordinary vibration amplitude. When the shock is caused by strong earthquake or even blasting impact beyond expectation, the extension spring 6-2 can rapidly extrude the vulcanized butadiene rubber particles 11 on the inner side of the sleeve body 6-1, and then impact the arc-shaped end cover 12 under the protection of the vulcanized butadiene rubber particles 11, and a large amount of vibration energy is consumed in the process. If the vibration does not stop, the extension spring 6-2 breaks the arc-shaped end cover 12 and can further enter a yield state, the extension spring 6-2 in the yield state can convert a large amount of vibration energy into plastic deformation energy, and further the vibration borne by the pipeline body 2 is greatly reduced until the vibration disappears, so that the damping and energy consumption effects are realized.

Furthermore, the inner surface of the stainless steel pipe as the sleeve body 6-1 is a rough surface, so that the friction force between the sleeve body 6-1 and the vulcanized butadiene rubber particles 11 can be increased, and seismic energy is consumed. The distance between the upper end of the spiral line of the extension spring 6-2 in the sleeve body 6-1 and the arc-shaped end cover 12 is not less than 30% of the distance between the spiral line at the bottom end of the extension spring 6-2 and the spiral line at the top end of the extension spring 6-2, the filling degree of vulcanized butadiene rubber particles 11 filled in the sleeve body 6-1 is not more than 85%, the extension spring 6-2 is guaranteed to have enough extension space, and a large amount of earthquake motion energy can be converted into elastic deformation energy.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention, such as replacing the elastic element with a rubber elastic rope, a rubber spring, a spring steel pull member, etc., or replacing the elastic filling medium with elastic polyurethane particles or other elastic rubber particles, etc., should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel antidetonation power consumption support of city utility tunnel, its characterized in that: including the support main part, the upper portion of support main part has the bearing face portion that is used for the bearing pipeline body, the support main part is equipped with the rigidity tractive spare that is used for the fixing support main part, the inside flexible tractive spare that has set up of support main part, the upper end of flexible tractive spare is used for just locating with pipeline body coupling bearing face portion, flexible tractive spare is including setting up cover body and setting in the support main part are in cover internal elastic element, elastic element's upper end and pipeline body coupling.

2. The novel anti-seismic energy-dissipation support of the urban comprehensive pipe gallery according to claim 1, is characterized in that: the support main part includes bed course, cushion cap and support body, the cushion cap is located the bed course top, support body locates the cushion cap top, rigidity tractive spare is fixed in the cushion cap, flexibility tractive spare inlays in the cushion cap.

3. The novel anti-seismic energy-dissipation support of the urban comprehensive pipe gallery according to claim 2, is characterized in that: the upper part of the bearing platform and the support body jointly form a circular arc-shaped bearing face part, the sleeve body is a circular tubular sleeve body embedded and fixed inside the bearing platform, and the elastic element arranged in the sleeve body is an extension spring coaxial with the sleeve body.

4. The novel anti-seismic energy-dissipation support of the urban comprehensive pipe gallery according to claim 3, is characterized in that: the flexible pipe comprises at least three flexible traction pieces, and the axis extension line of the sleeve body passes through the mass center of the pipe body.

5. The novel anti-seismic energy-dissipation support of the urban comprehensive pipe gallery according to claim 3, is characterized in that: the bearing platform is internally embedded with ribs which correspond to the flexible traction pieces one by one and have the same extending direction with the pipeline body, and the lower end of the sleeve body of the flexible traction piece is connected with the corresponding ribs.

6. The novel anti-seismic energy-dissipation support of the urban comprehensive pipe gallery according to claim 5, is characterized in that: the rib is I-shaped steel, the rib fixes the hollow hemisphere, the lower end of the sleeve body is connected with the hollow hemisphere, the lower end of the extension spring is connected with the hollow hemisphere, and the upper end of the extension spring is connected with the solid hemisphere for fixing the pipeline body.

7. The novel anti-seismic energy-dissipation support of the urban comprehensive pipe gallery according to claim 1, is characterized in that: the sleeve body is filled with elastic filling medium.

8. The novel anti-seismic energy-dissipation support of the urban comprehensive pipe gallery according to claim 6, is characterized in that: an arc-shaped end cover with an inward arc top is fixed at the upper end of the sleeve body.

9. The novel anti-seismic energy-dissipation support of the urban comprehensive pipe gallery according to claim 5, is characterized in that: the rigid traction piece is Z-shaped steel, the Z-shaped steel comprises an upper hook portion, a traction portion and a lower hook portion, the upper hook portion of the traction piece is embedded in the bearing platform, the traction portion is located on the side portion of the bearing platform, and a bolt hole is formed in the lower hook portion.

10. The novel anti-seismic energy-dissipation support of the urban comprehensive pipe gallery according to claim 9, is characterized in that: the horizontal height of the upper hook part is higher than that of the rib.