A damping system for key parts of a station-bridge integrated structure

Abstract

The present application relates to rail transit vibration reduction technical field, especially to a kind of vibration reduction system for station bridge integration structure key position, including the key position damping mechanism located below conversion beam and above load-bearing column, the key position damping mechanism is located between conversion beam and load-bearing column, the key position damping mechanism includes main force support, auxiliary force support, the main force support is located in the axial direction of supporting bridge pier conversion beam node position, to bear the vibration load transmitted by bridge pier, upper auxiliary force support is supported at six node positions of the main load-bearing position of conversion beam, indirectly bear the upper vibration load dispersed by conversion beam;The present application is strong, and development prospect is good.With more and more large urban traffic hubs that integrate multiple traffic load forms in one body in domestic completion, the vibration problem of station bridge integration structure highlights, and the present application device system is specially proposed for this problem.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit vibration reduction technology, and in particular to a vibration reduction system for a key part of a station-bridge integrated structure. BACKGROUND

[0002] For a traditional subway station, the vibration response of the structure caused by the vibration load of a single-line, two-way subway train is a key problem that must be considered in the design phase. However, for a large urban comprehensive transportation hub structure, the load forms included in the design calculation range are often very complex, and in the vertical direction, there are, from top to bottom, the two-way automobile dynamic load acting on the deck of the overpass bridge, the automobile dynamic load acting on the ground (i.e., the top plate of the underground structure), the automobile dynamic load acting in the sunken lane of the underground structure, the crowd load acting on the sunken underground plaza, and the two-way subway train load acting on the rail area of the lower subway platform layer. Moreover, due to the transportation hub structure, the interchange function is stronger, and three subway lines in different directions can be interchanged at the station. Under this background, for a large urban underground comprehensive transportation hub structure, the vibration response of the structure caused by multiple vibration loads must also be fully considered.

[0003] For a traditional underground rail transit structure, vibration control is mainly considered from the following aspects: first, the main structure such as beams, columns, and walls is strengthened to achieve vibration reduction effect; second, the vibration source is controlled, such as using a steel spring floating slab track, elastic fasteners, and elastic wheels.

[0004] Over the years, through a large number of research and demonstration by scholars and practical applications, the above-mentioned traditional vibration reduction measures have achieved good vibration control effect for general subway station structures. However, there is currently no vibration reduction measure specifically addressing the vibration response problem of a large urban comprehensive transportation hub structure under the action of multiple coupled vibration loads. Moreover, for the combined form of a large underground structure with a bridge structure on the upper part, the bridge pier is often directly supported on the transfer beam of the lower structure, and there is no corresponding appropriate vibration control measure.

[0005] Therefore, it is necessary to design a vibration reduction system for a "station-bridge combined" underground comprehensive transportation hub structure from the perspective of controlling the vibration response of the "station-bridge combined" position to meet the vibration reduction performance of the overall structure.

[0006] Similar technical solutions:

[0007] The subway station damping column composite foundation comprises a foundation bottom energy dissipation composite structure located at the bottom of the whole foundation, a special-shaped U-shaped support arranged at the upper portion of the foundation bottom energy dissipation composite structure, and a lead bar arranged at the center of the foundation bottom energy dissipation composite structure, wherein the special-shaped U-shaped support comprises two first and second special-shaped U-shaped supports, and the first special-shaped U-shaped support comprises first upper and lower horizontal support plates arranged in parallel with each other; and multilayer viscoelastic material composite steel plate structures are arranged on both sides of the lead bar. The subway station damping column composite foundation can effectively reduce the vibration generated by the whole station, has the effect of multilevel and multidimensional damping, effectively prevents the main structure of the station from cracking due to long-term vibration, and ensures the safety of long-term operation.

[0008] The road bridge anti-seismic support comprises a support circular plate and a isolation cylinder, and the anti-seismic buffer assembly is sealed by the support circular plate and the isolation cylinder. The top end of the anti-seismic buffer assembly is protruding and penetrates the isolation cylinder to connect and fix the beam body to the mounting plate. The vibration extrusion gyroscopic support piece compresses the rubber buffer block and drives the flexible resistance block to drive the unloading curved rod to slide and uniformly disperse the buffer. The vibration is overcome to twist the gyroscopic support piece, and the connection stability of the gyroscopic support piece and the beam body is maintained. The application is beneficial to reducing the damage of earthquake vibration to the bridge, fully guarantees the connection stability of the beam body during the earthquake, and is safe and reliable.

[0009] Summarizing the above, the prior art has the following problems:

[0010] 1. Too high limitation. Most of them are only for single bridge structure damping, traditional subway station structure damping, and large-scale comprehensive underground transportation hub structure damping measures are still blank.

[0011] 2. The existing technology is mostly a single damping device, and there is almost no systematic damping measure scheme according to the structure type. The effect of the single damping device in dealing with noise needs to be improved.

[0012] 3. Limited development prospects. Comprehensive, diversified and efficient are the inevitable stages of the development of underground structures, and single and limited damping measures cannot meet the damping needs of this kind of emerging underground structure. Therefore, we provide a damping system for key parts of a station-bridge integrated structure. SUMMARY

[0013] The purpose of the present application is to provide a damping system for key parts of a station-bridge integrated structure.

[0014] In order to achieve the above object, the application adopts the following technical scheme: a damping system for key parts of station-bridge integrated structure, comprising a key part damping mechanism located below a transfer beam and above a load-bearing column, the key part damping mechanism being located between the transfer beam and the load-bearing column, the key part damping mechanism comprising a main force support and a secondary force support, the main force support being located at a transfer beam node position in the axial direction of the supporting pier to bear the vibration load transmitted by the pier, the upper secondary force support being supported at six node positions of the main load-bearing position of the transfer beam to indirectly bear the upper vibration load dispersed by the transfer beam, the lower secondary force support being located at the top of the load-bearing column, the upper and lower secondary force supports being elastically connected by a buffer steel spring to have a damping effect, the secondary force supports being connected by a rectangular horizontal connecting rod, the key part damping mechanism further comprising a ball-shaped damping connecting table arranged in a staggered manner, the upper and lower ball-shaped damping connecting tables being used to connect a plurality of inclined connecting rods, the other ends of the inclined connecting rods being connected to the main force support or the secondary force support or a connecting sleeve, the lower ball-shaped damping connecting table being connected to four inclined connecting rods which are connected to the connecting sleeve fixed on the upper part of the load-bearing column by bolts.

[0015] Preferably, a rubber buffer is arranged between the buffer steel spring and the secondary force support.

[0016] Preferably, the inner side of the main force support has a movable active part, the inner side of the active part is provided with a cavity, the inner side of the cavity is provided with a resonant block moving in the axial direction of the guide column, one end of the resonant block has a spring two, the outer side of the active part has a longitudinal rolling mechanism, the longitudinal rolling mechanism comprises an outer sleeve, a spring three, an inner sleeve and a ball, the spring three is installed in the outer sleeve, the inner sleeve is installed in the outer sleeve and located at the end of the spring three, the end of the inner sleeve has a rolling ball, and the ball is attached to the longitudinal first oval raceway on the inner side of the main force support.

[0017] Preferably, the inner side of the main force support has a movable active part, the inner side of the active part is provided with a cavity, the inner side of the cavity is provided with a U-shaped cylindrical air bag, the two ends of the cylindrical air bag bear the vibration impact of the resonant block and apply a certain elastic force to push it away, the inner side of the cavity is provided with a resonant block moving in the axial direction of the guide column, the outer side of the active part has a longitudinal rolling mechanism, the longitudinal rolling mechanism comprises an outer sleeve, a spring three, an inner sleeve and a ball, the spring three is installed in the outer sleeve, the inner sleeve is installed in the outer sleeve and located at the end of the spring three, the end of the inner sleeve has a rolling ball, and the ball is attached to the first oval raceway on the inner side of the main force support.

[0018] Preferably, the main force support is installed in an outer shell, the main force support is connected with other components through the outer shell, the outer shell has a transverse second elliptical raceway, and the outer side of the main force support has a transverse rolling mechanism, which has the same structure as the longitudinal rolling mechanism.

[0019] Preferably, the number of the spherical damping connection tables is ten, including eight upper tables and two lower tables.

[0020] The present application has at least the following advantages:

[0021] 1. The present application has strong pertinence and good development prospects. With the completion of more and more large urban traffic hubs integrating multiple traffic load forms in China, the vibration problem of station-bridge integrated structures is highlighted. The device system of the present application is specially proposed for this problem and is arranged between the above-ground bridge pier, the lower structure transfer beam and the lower structure bearing column. It is a special patent and solves the problem with pertinence.

[0022] 2. The present application has strong innovation. Unlike traditional single damping support or damping foundation, the present application innovatively proposes a damping system, which includes multiple damping devices, and the different devices interact and jointly act, so that the damping effect is good, and the noise can be quickly removed at the same time.

[0023] 3. The design can adjust the direction of the resonance structure vibration according to the direction of the vibration by increasing the resonance structure and the movable structure in the main force support, which helps to quickly consume the vibration energy, has a quick damping effect and can also remove noise. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is a schematic diagram of the present application;

[0026] Figure 2 is a schematic diagram of the key part damping mechanism of the present application;

[0027] Figure 3 is a front view of the key part damping mechanism of the present application;

[0028] Figure 4 is a side view of the key part damping mechanism of the present application;

[0029] Figure 5 is a sectional view of the main force support of the present application;

[0030] Figure 6 is a cross-sectional view of the main force support of the second embodiment of the present application;

[0031] Figure 7 is a cross-sectional view of the main force support of the third embodiment of the present application.

[0032] In the figure: 1, bridge pier; 2, conversion beam; 3, bearing column; 4, key part damping mechanism; 401, main force support; 402, auxiliary force support; 403, rectangular horizontal connecting rod; 404, inclined connecting rod; 405, spherical damping connecting platform; 406, connecting sleeve; 407, buffer steel spring; 501, movable part; 502, resonance block; 503, spring two; 504, outer sleeve; 505, spring three; 506, inner sleeve; 507, ball; 508, cavity; 509, guide column; 510, first oval-shaped rolling track; 511, cylindrical air bag; 601, transverse rolling mechanism; 602, second oval-shaped rolling track; 603, outer housing. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. Embodiment one

[0034] Reference Figures 1-5 A damping system for key parts of a station-bridge integrated structure, comprising a key part damping mechanism 4 located below a conversion beam 2 and above a bearing column 3, the key part damping mechanism 4 being located between the conversion beam 2 and the bearing column 3, the key part damping mechanism 4 comprising a main force support 401 and an auxiliary force support 402, the main force support 401 being located at the node position of the conversion beam 2 in the axial direction of the bearing bridge pier 1 to bear the vibration load transmitted by the bearing bridge pier 1, the upper auxiliary force support 402 being supported at six node positions of the main bearing position of the conversion beam 2 to indirectly bear the upper vibration load dispersed by the conversion beam 2, the lower auxiliary force support 402 being placed on the top of the bearing column 3, the upper and lower auxiliary force supports 402 being elastically connected by a buffer steel spring 407 to have a damping effect, the auxiliary force supports 402 being connected by a rectangular horizontal connecting rod 403, the key part damping mechanism 4 further comprising spherical damping connecting platforms 405 arranged in a staggered manner, the upper and lower spherical damping connecting platforms 405 being used to connect a plurality of inclined connecting rods 404, the other end of the inclined connecting rods 404 being connected to the main force support 401 or the auxiliary force support 402 or a connecting sleeve 406, the lower spherical damping connecting platforms 405 respectively leading out four inclined connecting rods 404 to be connected to the connecting sleeve 406 fixed on the upper part of the bearing column 3 by bolts.

[0035] The buffer steel spring 407 is provided with rubber buffer between the auxiliary force support 402, the auxiliary force support 402 is a cube, and the main force support 401 is a cylinder.

[0036] The number of the spherical damping connection table 405 is ten, of which eight are in the upper layer and two are in the lower layer.

[0037] The inner side of the main force support 401 has a movable activity part 501, the inner side of the activity part 501 is provided with a cavity 508, the inner side of the cavity 508 is provided with a resonance block 502 moving in the axial direction of the guide column 509, one end of the resonance block 502 is provided with a spring 503, the outer side of the activity part 501 is provided with a longitudinal rolling mechanism, the longitudinal rolling mechanism includes an outer sleeve 504, a spring 505, an inner sleeve 506 and a ball 507, the spring 505 is installed in the outer sleeve 504, the inner sleeve 506 is installed in the outer sleeve 504 and located at the end of the spring 505, the end of the inner sleeve 506 is provided with the rolling ball 507, and the ball 507 is attached to the longitudinal first oval rolling groove 510 in the inner side of the main force support 401.

[0038] The scheme has the following working process: the two main force supports 401 of the upper part of the system are supported at the node position of the conversion beam 2, directly bearing the vibration load transmitted from the pier 1; the six auxiliary force supports 402 of the upper part are supported at the six node positions around the main load-bearing position of the conversion beam 2, indirectly bearing the upper vibration load dispersed by the conversion beam 2; the six rectangular auxiliary force supports 402 are connected by rectangular horizontal connecting rods 403 to improve the integrity of the structure. The ten spherical damping connection tables 405 in the middle of the damping system are arranged in staggered layers, of which eight are in the upper layer and two are in the lower layer, used to connect multiple inclined connecting rods 404, forming a frame structure system, the vibration load is weakened layer by layer, and the damping effect is achieved. The six auxiliary force supports 402 of the lower part are placed on the top of the lower structure bearing column 3, the buffer steel spring 407 plays a damping effect, each main and auxiliary support, spherical damping connection table 405 is connected by inclined connecting rod 404 to form a damping frame system. Then connected by connecting sleeve 406, thus the whole structure is unified;

[0039] When the vibration occurs, the resonance block 502 can absorb the vibration energy and dissipate the vibration energy in the form of self-vibration, thereby reducing the vibration. In addition, the noise can be reduced after the vibration is reduced. In addition, due to the cooperation of the first longitudinal elliptical raceway 510 and the spring three 505, the ball 507 is always located at the tip of the first longitudinal elliptical raceway 510, that is, arranged longitudinally as shown, when the longitudinal vibration load occurs. When the oblique vibration occurs, the movable direction of the resonance block 502 can only be the same as the axial direction of the guide column 509, so that the resonance block 502 reciprocates in the maximum movable range when the oblique vibration occurs, that is, the vibration direction is close to the same direction of the vibration source, and the outer side of the movable part 501 is provided with a longitudinal rolling mechanism. Therefore, when the oblique vibration occurs, the movable part 501 will tilt, the angle of the guide column 509 is the same as the oblique vibration, so that the resonance block 502 can quickly absorb the kinetic energy of the vibration and dissipate it when the vibration occurs. With the disappearance of the vibration kinetic energy, the movable part 501 is gradually reset under the action of the spring three 505. On the one hand, the vibration can be quickly reduced, and the noise can be reduced. In addition, the resonance block 502 is arranged in the interior of the movable part 501 and the main force support 401, so that the resonance occurs in the interior. Compared with the open resonance body, the noise can also be reduced. Example two

[0040] With reference to Figure 6 The inner side of the main force support 401 has a movable movable part 501. The inner side of the movable part 501 is provided with a cavity 508. The inner side of the cavity 508 is provided with a cylindrical air bag 511 with a U-shaped cross section. The two ends of the cylindrical air bag 511 bear the vibration impact of the resonance block 502 and apply a certain elastic force to push it away. The inner side of the cavity 508 is provided with a resonance block 502 which moves along the axial direction of the guide column 509. The outer side of the movable part 501 has a longitudinal rolling mechanism. The longitudinal rolling mechanism includes an outer sleeve 504, a spring three 505, an inner sleeve 506 and a ball 507. The spring three 505 is installed in the outer sleeve 504. The inner sleeve 506 is installed in the outer sleeve 504 and located at the end of the spring three 505. The end of the inner sleeve 506 has a rolling ball 507. The ball 507 is in close contact with the first longitudinal elliptical raceway 510 on the inner side of the main force support 401.

[0041] The cylindrical air bag 511 can provide elasticity and is more conducive to noise reduction. Example three

[0042] With reference to Figure 7The main force support 401 is installed in the outer shell 603, the main force support 401 is connected with other components through the outer shell 603, the outer shell 603 has the transverse second oval-shaped raceway 602, the outer side of the main force support 401 has the transverse rolling mechanism 601, the structure of the transverse rolling mechanism 601 is consistent with the longitudinal rolling mechanism, and the transverse and longitudinal vibration treatment can be realized.

[0043] In summary, the embodiment of the present application is strong in pertinence and good in development prospect, with more and more large urban traffic hubs integrating multiple traffic load forms in China, the vibration problem of station-bridge integrated structure is highlighted, and an innovative damping system is provided, which includes multiple damping devices, different devices interact and jointly act, and the damping effect is good, and the noise can be quickly removed while the damping effect is good.

[0044] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A damping system for a key location of a station-bridge integrated structure, characterized in that, The key position damping mechanism (4) is located between the transfer beam (2) and the load-bearing column (3), and comprises a main force support (401) and a secondary force support (402). The main force support (401) is located at the node position of the transfer beam (2) in the central axis direction of the supporting pier (1) to bear the vibration load transmitted by the pier (1). The upper secondary force support (402) is supported at six node positions of the main load-bearing position of the transfer beam (2) to indirectly bear the upper vibration load dispersed by the transfer beam (2). The lower secondary force support (402) is arranged at the top of the load-bearing column (3), and is elastically connected between the upper and lower secondary force supports (402) by a buffer steel spring (407) to play a damping effect. The secondary force supports (402) are connected by a rectangular horizontal connecting rod (403). The key position damping mechanism (4) further comprises staggered spherical damping connecting platforms (405). The upper and lower spherical damping connecting platforms (405) are used to connect a plurality of inclined connecting rods (404). The other end of the inclined connecting rod (404) is connected to the main force support (401) or the secondary force support (402) or a connecting sleeve (406). The lower spherical damping connecting platform (405) is connected to the connecting sleeve (406) fixed on the upper part of the load-bearing column (3) by four inclined connecting rods (404).

2. The vibration reduction system for a key location of a station-bridge integrated structure according to claim 1, wherein A rubber buffer is arranged between the buffer steel spring (407) and the secondary force support (402).

3. The vibration reduction system for a key location of a station-bridge integrated structure according to claim 1, wherein The inner side of the main force support (401) has a movable activity part (501). The inner side of the activity part (501) is provided with a cavity (508). A resonance block (502) is mounted in the cavity (508) and can move in the axial direction of a guide column (509). One end of the resonance block (502) is provided with a spring (503). The outer side of the activity part (501) is provided with a longitudinal rolling mechanism. The longitudinal rolling mechanism comprises an outer sleeve (504), a spring (505), an inner sleeve (506) and a ball (507). The spring (505) is mounted in the outer sleeve (504). The inner sleeve (506) is mounted in the outer sleeve (504) and located at the end of the spring (505). The end of the inner sleeve (506) is provided with the rolling ball (507). The ball (507) is in contact with a longitudinal first oval-shaped rolling groove (510) in the inner side of the main force support (401).

4. The vibration reduction system for a key location of a station-bridge integrated structure according to claim 1, wherein The inner side of the main force support (401) has a movable activity part (501), the inner side of the activity part (501) is provided with a cavity (508), the inner side of the cavity (508) is provided with a U-shaped cylindrical air bag (511), the both ends of the cylindrical air bag (511) bear the vibration impact of the resonance block (502) and apply a certain elastic force to push it away, the inner side of the cavity (508) is provided with a resonance block (502) moving in the axial direction of the guide column (509), the outer side of the activity part (501) has a longitudinal rolling mechanism, the longitudinal rolling mechanism includes an outer sleeve (504), a spring three (505), an inner sleeve (506) and a ball (507), the outer sleeve (504) is provided with a spring three (505), the inner sleeve (506) is installed in the outer sleeve (504) and located at the end of the spring three (505), the end of the inner sleeve (506) has a rolling ball (507), the ball (507) is attached to the first oval raceway (510) on the inner side of the main force support (401).

5. The vibration reduction system for a key location of a station-bridge integrated structure according to claim 1, wherein The main force support (401) is installed in the outer shell (603), the main force support (401) is connected with other components through the outer shell (603), the outer shell (603) has a transverse second oval raceway (602), the outer side of the main force support (401) has a transverse rolling mechanism (601), the structure of the transverse rolling mechanism (601) is consistent with that of the longitudinal rolling mechanism.

6. The vibration reduction system for a key location of a station-bridge integrated structure according to claim 1, wherein The number of spherical damping connection tables (405) is ten, of which eight are on the upper layer and two are on the lower layer.

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