Bridge road noise barrier embedded part

Abstract

The invention discloses a bridge road noise barrier embedded part, and relates to the technical field of bridge road embedded parts, under the condition that thermal expansion and cold contraction of concrete are not obvious, an embedded seat which is embedded in a concrete foundation in a cone-shaped posture can keep a stable connection state with peripheral solidified concrete; the solidified concrete foundation not only can position the embedded seat in the horizontal direction, but also can limit the displacement of the embedded seat in the vertical direction, is different from an existing straight-cylinder-type embedded part, has multiple limiting effects, and can limit the displacement of the embedded seat in the vertical direction when concrete expands with heat and contracts with cold obviously. In addition, the embedded part can also adapt to the change of the concrete foundation by utilizing the change of the height in a self-adaptive manner, so that tight fit contact with the concrete foundation is ensured all the time, and the stability of the embedded part is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge and road embedded parts, and specifically to an embedded part for a bridge and road sound insulation barrier. Background Art

[0002] The construction of a bridge and road sound insulation barrier is mainly divided into two parts: the construction of embedded parts and the installation of above-ground components. The construction of embedded parts is usually carried out by embedding them on both sides of the bridge and road during concrete construction, or also including the isolation belt of a two-way road.

[0003] For example, an embedded part for a bridge and road sound insulation barrier with the publication number CN211171685U restricts the forces on the anti-tilting horizontal plate in multiple directions in both the horizontal and vertical directions by setting anti-loosening anchor columns, enabling the anti-tilting horizontal plate to be more stably combined with the concrete. And by setting a material-passing hollow groove on the anti-tilting horizontal plate, it is convenient for the poured concrete to fill the gap position below the anti-tilting horizontal plate, making the construction and installation of the embedded part convenient and fast.

[0004] In concrete embedded parts, the influence of the thermal expansion and contraction of concrete on the embedded parts is multi-faceted, including: Concrete cracking: During the thermal expansion and contraction of concrete, if it is rigidly restricted by the embedded part, cracks are likely to occur, which not only affects the aesthetics of the structure but also reduces the overall strength and durability of the concrete structure. Loosening and displacement of the embedded part: When the temperature of the concrete changes, its volume changes, which will cause the combination between the embedded part and the concrete to become loose, thus affecting the stability and functionality of the embedded part.

[0005] To sum up, the thermal expansion and contraction of concrete has multi-faceted effects on the embedded part, including the loosening, displacement of the embedded part, concrete cracking, and the gap between the embedded part and the concrete. In the prior art, the thermal expansion and contraction of concrete is generally adapted by setting a contact allowance (i.e., leaving a certain gap between the embedded part and the concrete), and the corresponding problems are also relatively intuitive, that is, the stability of the embedded part is relatively low.

[0006] In view of the above problems, the present invention proposes an embedded part for a bridge and road sound insulation barrier that can efficiently adapt to the thermal expansion and contraction of concrete and has high stability. Summary of the Invention

[0007] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a pre-embedded part for a bridge road sound insulation barrier to solve the problems mentioned in the above background technology that the influence of the thermal expansion and contraction of concrete on the pre-embedded part is multi-faceted, including the loosening, displacement, concrete cracking of the pre-embedded part, and the gap between the pre-embedded part and the concrete. In the existing technology, the thermal expansion and contraction of concrete is generally adapted by setting a contact allowance (i.e., leaving a certain gap between the pre-embedded part and the concrete), and the corresponding problem is also relatively intuitive, that is, the stability of the pre-embedded part is relatively low.

[0008] To achieve the above object, the present invention provides the following technical solution: A pre-embedded part for a bridge road sound insulation barrier, including a concrete foundation, and further including a pre-embedded seat embedded in the concrete foundation and adapted to the thermal expansion and contraction of the concrete foundation through a frustum shape, an elastic balloon suspended below the pre-embedded seat for providing a limiting and supporting function, and a connecting rod arranged between the pre-embedded seat and the elastic balloon for providing a vertical reset function to the pre-embedded seat and adaptively supplying oil to the elastic balloon; A docking reserved hole connected to the sound insulation screen is opened at the center of the upper end of the pre-embedded seat.

[0009] Preferably, an elastic gasket is fixedly arranged on the lower surface of the pre-embedded seat for supporting the pre-embedded seat and reserving a space for the pre-embedded seat to adaptively drop when the concrete expands thermally.

[0010] Preferably, a limiting groove is opened inside the pre-embedded seat, and a partition plate is slidably arranged inside the limiting groove; A rubber sealing ring adhered to the side wall of the partition plate is arranged between the partition plate and the limiting groove.

[0011] Preferably, one end of a return spring is welded to the upper surface of the partition plate, and the other end of the return spring is fixed to the inner wall of the limiting groove.

[0012] Preferably, the upper end of the connecting rod is fixed to the lower surface of the partition plate, and the lower end of the partition plate is fixed to the upper end of the elastic balloon.

[0013] Preferably, the limiting groove is separated by the partition plate into an upper cavity and a lower cavity.

[0014] Preferably, a hydraulic channel is opened inside the connecting rod, and the hydraulic channel is of a "T" shape structure.

[0015] Preferably, the "T" shaped upper end of the hydraulic channel is connected to the lower cavity of the limiting groove in a through manner, and the lower end of the hydraulic channel is connected to the elastic balloon in a through manner; The lower cavity of the limiting groove, the hydraulic channel, and the inside of the elastic balloon are all filled with hydraulic oil.

[0016] Compared with the prior art, the present invention has the following beneficial effects: When the thermal expansion and contraction of concrete is not obvious, the embedded seat embedded in the concrete foundation in a cone shape can maintain a stable connection with the surrounding solidified concrete. The solidified concrete foundation not only has a horizontal positioning effect on the embedded seat, but also limits the vertical displacement of the embedded seat. Different from the existing straight-tube embedded parts, it has multiple limiting effects. When concrete undergoes obvious thermal expansion under high ambient temperature, when the concrete foundation squeezes the inclined surface of the embedded seat horizontally in the middle, the embedded seat will be subjected to a component force in the vertical direction, so that the embedded seat adaptively falls and compresses the elastic gasket below to adapt to the thermal expansion of the concrete foundation, while still maintaining a close fit between the concrete foundation and the embedded seat; in addition, since the elastic balloon is a spherical structure, the thermal expansion of the concrete foundation has a fully wrapped inward squeezing effect on the elastic balloon, so the elastic balloon will not be offset in the actual position but will be fixed at the initial position and only the volume will be compressed. When the volume of the elastic balloon is compressed, the excess hydraulic oil inside it will be pressed into the hydraulic channel and finally smoothly discharged into the lower cavity of the limit groove. At the same time, due to the increase in the amount of oil in the lower cavity of the limit groove to generate a hydraulic effect and the embedded seat is subjected to a downward squeezing component force under the thermal expansion of the concrete foundation, the embedded seat will stably move downward to adapt to the horizontal inward squeezing of the concrete foundation on the one hand, and on the other hand, the cavity space under the limit groove becomes larger to adapt to the replenishment of the oil entering when the elastic balloon shrinks; 3. When the concrete shrinks significantly under low ambient temperature, due to the spherical design of the elastic balloon, a gap will be generated between the elastic balloon and the surrounding concrete foundation when the concrete foundation shrinks. However, the reset spring is in a compressed state. When the gap is generated, the reset spring will play a reset role and push the separation plate down along the limit groove so that the hydraulic oil in the cavity under the limit groove is replenished into the elastic balloon along the hydraulic channel, and the elastic balloon will expand adaptively and eliminate the spherical gap caused by the shrinkage of the concrete foundation, so as to ensure the positioning stability of the elastic balloon and restore the elastic balloon. The reaction force of the positioning spring will also be applied to the embedded seat through the top wall of the limiting groove. Therefore, the reset action of the reset spring will, on the one hand, press down the separation plate to replenish the oil inside the elastic balloon, and on the other hand, lift the embedded seat upward to eliminate the conical gap around the embedded seat caused by the shrinkage of the concrete foundation, thereby ensuring that the conical wall of the embedded seat is always stably fitted with the concrete foundation, and thus highly adaptable to the thermal expansion and contraction of the concrete foundation. The stability of the embedded seat in the concrete foundation can be guaranteed regardless of thermal expansion or contraction. It has high stability and a simple and ingenious structure, and is suitable for the promotion and use of small concrete embedded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the first three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the three-dimensional splitting of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the embedded seat after being cut open.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention cut away as a whole.

[0022] Figure 6 It is a cross-sectional schematic diagram of the present invention embedded in a concrete structure.

[0023] Figure 7 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0024] In the figure: 1. embedded seat; 11. reserved hole for docking; 12. elastic gasket; 21. limit groove; 22. reset spring; 3. separator; 4. connecting rod; 41. hydraulic channel; 5. elastic balloon. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 7 The present invention provides a technical solution: a bridge road noise barrier embedded part, including a concrete foundation, and also includes an embedded seat 1 embedded in the concrete foundation and adaptive to the thermal expansion and contraction of the concrete foundation through a frustum-shaped shape, an elastic balloon 5 suspended below the embedded seat 1 for providing a limiting support function, and a connecting rod 4 arranged between the embedded seat 1 and the elastic balloon 5 for providing a vertical reset function for the embedded seat 1 and adaptively supplying oil to the elastic balloon 5; A butt-jointed reserved hole 11 for connection with the sound insulation screen is provided at the center of the upper end of the embedded seat 1 .

[0027] In this embodiment, when the bridge road noise barrier embedded part is used, the noise barrier embedded part must be placed in the marked position in advance before the concrete construction. As the concrete slurry is gradually injected, a sound barrier embedded part is formed between the noise barrier embedded part and the concrete. Figure 6The state shown, at this time, the concrete tightly wraps around the outer parts of the embedded base 1 and the elastic balloon 5 under the action of its own flow and mechanical vibration assistance. After the concrete cures, the embedded base 1 will also be positioned in the concrete foundation. Subsequently, the docking reserved hole 11 opened on the embedded base 1 can be used to achieve docking with the bridge road sound insulation barrier (generally spiral connection, and other connection methods can also be used, which are existing technologies and will not be elaborated too much in this invention).

[0028] An elastic gasket 12 for supporting the embedded base 1 and reserving space for the adaptive downward movement of the embedded base 1 when the concrete expands thermally is fixedly arranged on the lower surface of the embedded base 1.

[0029] In this embodiment, when the temperature rises, these materials will expand in volume according to their thermal expansion coefficients. At the same time, there may be a temperature gradient inside the concrete structure, that is, the temperature changes in different parts are inconsistent, which will lead to different degrees of expansion in different parts, thus causing thermal stress). Analyzed from a microscopic perspective, the expanding concrete foundation will generate a horizontal squeezing force on the embedded base 1. Since the embedded base 1 has a special frustum shape, when the inclined surface of the embedded base 1 is horizontally squeezed by the concrete foundation, the embedded base 1 will receive a vertical component force, so that the embedded base 1 adaptively descends and compresses the elastic gasket 12 below to adapt to the thermal expansion phenomenon of the concrete foundation, while still maintaining a tight fit between the concrete foundation and the embedded base 1.

[0030] A limiting groove 21 is opened inside the embedded base 1, and a partition plate 3 is slidably arranged inside the limiting groove 21; A rubber sealing ring adhered to the side wall of the partition plate 3 is arranged between the partition plate 3 and the limiting groove 21.

[0031] In this embodiment, since the elastic balloon 5 is spherical in structure, the thermal expansion of the concrete foundation acts on the elastic balloon 5 as a fully wrapped squeezing action towards the middle. Therefore, the elastic balloon 5 will not actually shift in position but will only be fixed at the initial position and only the volume will be compressed. When the volume of the elastic balloon 5 is compressed, the excess hydraulic oil inside it will be pressed into the hydraulic channel 41 and finally smoothly discharged into the lower cavity of the limiting groove 21. At the same time, due to the increase in the amount of oil in the lower cavity of the limiting groove 21 generating a hydraulic action and the embedded base 1 receiving a downward squeezing component force under the action of the thermal expansion of the concrete foundation, the embedded base 1 will stably move downward. On the one hand, it adapts to the horizontal squeezing of the concrete foundation, and on the other hand, it makes the space of the lower cavity of the limiting groove 21 larger to adapt to the oil replenished when the elastic balloon 5 shrinks.

[0032] One end of a return spring 22 is welded to the upper surface of the partition plate 3, and the other end of the return spring 22 is fixed to the inner wall of the limiting groove 21.

[0033] In this embodiment, when the concrete foundation experiences cold shrinkage, a frustum-shaped gap will also be generated between the concrete foundation and the embedded base 1, resulting in a decrease in the stability of the embedded base 1. However, as described above, when the return spring 22 returns and presses the partition plate 3 downward, the reaction force of the return spring 22 will also be applied to the embedded base 1 through the top wall of the limit groove 21. Therefore, on the one hand, the return action of the return spring 22 will press down the partition plate 3 to replenish the hydraulic oil inside the elastic balloon 5, and on the other hand, it will jack up the embedded base 1 to eliminate the conical gap generated by the cold shrinkage of the concrete foundation around the embedded base 1, ensuring that the conical wall of the embedded base 1 is always stably attached to the concrete foundation, and thus highly adapting to the thermal expansion and contraction of the concrete foundation.

[0034] The upper end of the connecting rod 4 is fixed to the lower surface of the partition plate 3, and the lower end of the partition plate 3 is fixed to the upper end of the elastic balloon 5.

[0035] The limit groove 21 is separated by the partition plate 3 into an upper cavity and a lower cavity.

[0036] In this embodiment, when the concrete undergoes obvious cold shrinkage under a relatively low ambient temperature, since the elastic balloon 5 is spherical in design, when the concrete foundation undergoes cold shrinkage, a gap will be generated between the elastic balloon 5 and the surrounding concrete foundation. However, the return spring 22 is in a compressed state. When the gap is generated, the return spring 22 will exert its return action to push the partition plate 3 downward along the limit groove 21, so that the hydraulic oil in the lower cavity of the limit groove 21 is replenished into the elastic balloon 5 along the hydraulic channel 41, and the elastic balloon 5 will undergo adaptive expansion and eliminate the spherical gap generated by the cold shrinkage of the concrete foundation, thereby ensuring the positioning stability of the elastic balloon 5.

[0037] A hydraulic channel 41 is provided inside the connecting rod 4, and the hydraulic channel 41 has a "T" - shaped structure.

[0038] The upper "T" - shaped end of the hydraulic channel 41 is in through connection with the lower cavity of the limit groove 21, and the lower end of the hydraulic channel 41 is in through connection with the elastic balloon 5; The lower cavity of the limit groove 21, the hydraulic channel 41, and the inside of the elastic balloon 5 are all filled with hydraulic oil.

[0039] In this embodiment, when the volume of the elastic balloon 5 is compressed, the excess hydraulic oil inside it will be pressed into the hydraulic channel 41 and finally smoothly discharged into the lower cavity of the limit groove 21. At the same time, due to the increase in the amount of hydraulic oil in the lower cavity of the limit groove 21 generating a hydraulic effect and the embedded base 1 being subjected to a downward extrusion component under the thermal expansion of the concrete foundation, the embedded base 1 will stably move downward. On the one hand, it adapts to the horizontal extrusion of the concrete foundation, and on the other hand, it makes the space in the lower cavity of the limit groove 21 larger to adapt to the oil replenished when the elastic balloon 5 shrinks.

[0040] Working principle: When using the embedded parts of the bridge and road sound insulation barrier, first, the embedded parts of this sound insulation barrier need to be placed in the calibrated position in advance before concrete construction. As the concrete slurry is gradually injected, a state as shown in Figure 6 is formed between the embedded parts of this sound insulation barrier and the concrete. At this time, the concrete tightly wraps around the outside of the embedded base 1 and the elastic balloon 5 under the action of its own flow and mechanical vibration assistance. It should be noted that in the initial state, the reset spring 22 is in a compressed state. Therefore, the reset spring 22 will inject the hydraulic oil inside the limit groove 21 into the elastic balloon 5 in the form of a certain pressure through the partition plate 3 and the connecting rod 4, so that the elastic balloon 5 maintains a relatively complete spherical posture in the initial state and will not be flattened by the concrete due to the existence of hydraulic pressure.

[0041] In the case where the thermal expansion and contraction of the concrete are not obvious, the embedded base 1 embedded in the concrete foundation in a conical posture can maintain a stable connection state with the surrounding solidified concrete. The solidified concrete foundation not only has a positioning effect on the embedded base 1 in the horizontal direction, but also restricts the displacement of the embedded base 1 in the vertical direction. Different from the existing straight cylindrical embedded parts, it has multiple limiting effects; When the concrete undergoes obvious thermal expansion at a relatively high ambient temperature (the constituent materials such as aggregates and cement slurries in the concrete have a coefficient of thermal expansion. When the temperature rises, these materials will expand in volume according to their coefficients of thermal expansion. At the same time, there may be a temperature gradient inside the concrete structure, that is, the temperature changes of different parts are inconsistent, which will lead to different degrees of expansion of different parts, thus causing thermal stress), from a microscopic perspective, the expanding concrete foundation will generate a horizontal squeezing force on the embedded base 1. Since the embedded base 1 has a special frustum shape, when the concrete foundation horizontally squeezes the inclined surface of the embedded base 1, the embedded base 1 will receive a vertical component force, so that the embedded base 1 adaptively drops and compresses the elastic gasket 12 below to adapt to the thermal expansion of the concrete foundation, while still maintaining a tight fit between the concrete foundation and the embedded base 1; at the same time, since the elastic balloon 5 is a spherical structure, the thermal expansion of the concrete foundation acts on the elastic balloon 5 as a fully wrapped squeezing force towards the middle. Therefore, the elastic balloon 5 will not actually shift its position but will only be fixed in the initial position and only its volume will be compressed. When the volume of the elastic balloon 5 is compressed, the excess hydraulic oil inside it will be pressed into the hydraulic channel 41 and finally smoothly discharged into the lower cavity of the limit groove 21. At the same time, due to the increase in the amount of hydraulic oil in the lower cavity of the limit groove 21 generating a hydraulic effect and the embedded base 1 receiving a downward squeezing component force under the action of the thermal expansion of the concrete foundation, the embedded base 1 will stably move downwards. On the one hand, it adapts to the horizontal squeezing of the concrete foundation, and on the other hand, it makes the space of the lower cavity of the limit groove 21 larger to adapt to the oil fluid supplemented when the elastic balloon 5 shrinks; When obvious cold shrinkage occurs to the concrete under lower ambient temperature, since the elastic balloon 5 is designed in a spherical shape, when cold shrinkage occurs to the concrete foundation, a gap will be generated between the elastic balloon 5 and the surrounding concrete foundation. However, the reset spring 22 is in a compressed state. When the gap is generated, the reset spring 22 will play a reset role to push the separation plate 3 downward along the limit groove 21, so that the hydraulic oil in the lower cavity of the limit groove 21 is replenished into the elastic balloon 5 along the hydraulic channel 41, and the elastic balloon 5 will expand adaptively to eliminate the spherical gap generated due to the cold shrinkage of the concrete foundation, thereby ensuring the positioning stability of the elastic balloon 5; Meanwhile, when cold shrinkage occurs to the concrete foundation, a frustum-shaped gap will also be generated between the concrete foundation and the embedded seat 1, resulting in a reduction in the stability of the embedded seat 1. However, as described above, when the reset spring 22 resets and presses the separation plate 3 downward, the reaction force of the reset spring 22 will also be applied to the embedded seat 1 through the top wall of the limit groove 21. Therefore, by using the reset function of the reset spring 22, on the one hand, it will press down the separation plate 3 to replenish the oil in the elastic balloon 5, and on the other hand, it will jack up the embedded seat 1 to eliminate the conical gap generated by the cold shrinkage of the concrete foundation around the embedded seat 1, ensuring that the conical wall of the embedded seat 1 is always in stable contact with the concrete foundation, and further highly adapting to the thermal expansion and contraction of the concrete foundation. Whether it is thermal expansion or cold shrinkage, the stability of the embedded seat 1 in the concrete foundation can be ensured. It has high stability and a simple and ingenious structure, and is suitable for popularization and use in small concrete embedded parts.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pre-embedded part of a sound insulation barrier for a bridge road, including a concrete foundation, characterized in that: It further includes an embedded seat (1) embedded in the concrete foundation and adapted to the thermal expansion and contraction of the concrete foundation through its frustum-shaped outer shape, an elastic balloon (5) suspended below the embedded seat (1) for providing a limiting and supporting function, and a connecting rod (4) disposed between the embedded seat (1) and the elastic balloon (5) for providing a vertical reset function to the embedded seat (1) and adaptively supplying oil to the elastic balloon (5); A docking reserved hole (11) connected to the sound insulation screen is provided at the center of the upper end of the embedded seat (1).

2. The embedded part of a bridge road sound insulation barrier according to claim 1, characterized in that: An elastic gasket (12) for supporting the embedded seat (1) and reserving a space for the embedded seat (1) to fall adaptively during the thermal expansion of the concrete is fixedly provided on the lower surface of the embedded seat (1).

3. The embedded part of a bridge road sound insulation barrier according to claim 1, characterized in that: A limiting groove (21) is formed inside the embedded seat (1), and a separating disc (3) is slidably disposed inside the limiting groove (21); A rubber sealing ring adhered to the side wall of the separating disc (3) is provided between the separating disc (3) and the limiting groove (21).

4. The embedded part of a bridge road sound insulation barrier according to claim 3, characterized in that: One end of a reset spring (22) is welded to the upper surface of the separating disc (3), and the other end of the reset spring (22) is fixed to the inner wall of the limiting groove (21).

5. The embedded part of a bridge road sound insulation barrier according to claim 3, characterized in that: The upper end of the connecting rod (4) is fixed to the lower surface of the separating disc (3), and the lower end of the separating disc (3) is fixed to the upper end of the elastic balloon (5).

6. The pre-embedded part of a bridge road sound insulation barrier according to claim 5, characterized in that: The limiting groove (21) is separated by the separating disc (3) into an upper cavity and a lower cavity.

7. The pre-embedded part of a bridge road sound insulation barrier according to claim 6, characterized in that: A hydraulic channel (41) is formed inside the connecting rod (4), and the hydraulic channel (41) has a "T" shape.

8. The embedded part of a bridge road sound insulation barrier according to claim 7, characterized in that: The "T"-shaped upper end of the hydraulic channel (41) is in through connection with the lower cavity of the limiting groove (21), and the lower end of the hydraulic channel (41) is in through connection with the elastic balloon (5); The lower cavity of the limiting groove (21), the hydraulic channel (41), and the inside of the elastic balloon (5) are all filled with hydraulic oil.

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