阅读说明：本技术 用于轨道交通的装配式浮置柱式检查坑隔振系统 (Assembled floating column type inspection pit vibration isolation system for rail transit ) 是由 卢家森 张海波 华婧 李旖旎 于 2020-06-18 设计创作，主要内容包括：本发明公开了用于轨道交通的装配式浮置柱式检查坑隔振系统,设置于轨道交通的上盖建筑与轨道之间；包括若干依次首尾相连形成长条柱式检查坑的装配式浮置柱式检查坑单元；每一装配式浮置柱式检查坑单元均包括预制底板和若干预制柱；预制底板的横截面呈“凹”字形,两侧凸出部分的上面设有预制柱；预制柱的上端与相应的轨道连接；预制底板设置于位于轨道正下方的上盖建筑的凹槽内；凹槽底部设有混凝土梁,混凝土梁对应预制底板每一侧凸出部分设置；预制底板与凹槽的两侧侧壁和底板之间分别设有若干横向约束和若干隔振器。本发明具有良好的减振降噪性能,能更加有效降低轨道交通列车的轮轨冲击振动对轨道交通上盖建筑振动舒适度的影响。(The invention discloses an assembled floating column type inspection pit vibration isolation system for rail transit, which is arranged between an upper cover building and a rail of the rail transit; the device comprises a plurality of assembled floating column type inspection pit units which are sequentially connected end to form a long column type inspection pit; each assembled floating column type inspection pit unit comprises a prefabricated bottom plate and a plurality of prefabricated columns; the cross section of the prefabricated bottom plate is concave, and prefabricated columns are arranged on the protruding parts on the two sides of the prefabricated bottom plate; the upper end of the prefabricated column is connected with the corresponding track; the prefabricated bottom plate is arranged in a groove of an upper cover building positioned right below the track; the bottom of the groove is provided with a concrete beam which is arranged corresponding to each side protruding part of the prefabricated bottom plate; and a plurality of transverse constraints and a plurality of vibration isolators are respectively arranged between the prefabricated bottom plate and the side walls and the bottom plate at the two sides of the groove. The invention has good vibration and noise reduction performance, and can effectively reduce the influence of wheel-rail impact vibration of the rail transit train on the vibration comfort level of the rail transit upper cover building.)

1. The assembled floating column type inspection pit vibration isolation system for the rail transit is arranged between an upper cover building (1) and a rail (2) of the rail transit; the device is characterized by comprising a plurality of assembled floating column type inspection pit units (3) which are arranged under the track (2) and are uniformly distributed along the length direction of the track (2);

the assembled floating column type inspection pit units (3) are sequentially connected end to form a long column type inspection pit covering the right lower part of the track (2);

a plurality of inspection holes (4) are formed in the middle line position of the bottom of the long-strip column type inspection pit along the length direction of the track (2);

each assembled floating column type inspection pit unit (3) comprises a prefabricated bottom plate (5) and a plurality of prefabricated columns (6);

each prefabricated bottom plate (5) is of a strip-shaped structure, the shape of the strip-shaped structure is matched with that of the corresponding track (2), and the cross section of each prefabricated bottom plate (5) is concave;

a plurality of prefabricated columns (6) are arranged on the protruding parts on the two sides of each prefabricated bottom plate (5);

the upper end of each prefabricated column (6) is connected with the corresponding track (2);

each prefabricated bottom plate (5) is arranged in a groove (7) of the upper cover building (1) which is positioned right below the track (2);

the upper cover building (1) further comprises a concrete beam (8) arranged at the bottom of the groove (7), and the concrete beam (8) is arranged corresponding to a protruding part on each side of the prefabricated bottom plate (5);

a plurality of transverse constraints (9) are arranged between each prefabricated bottom plate (5) and the side walls of the two sides of the groove (7); a plurality of vibration isolators (10) are arranged between each prefabricated bottom plate (5) and the bottom surface of the groove (7).

2. The fabricated floating column type inspection pit vibration isolation system for rail transit as claimed in claim 1, wherein a drain (11) extending in a length direction of said rail (2) is provided at a center line position of a bottom surface of said groove (7); the drainage ditch (11) is located under a plurality of inspection holes (4).

3. The fabricated floating pillar inspection pit vibration isolation system for rail transit of claim 1, wherein each vibration isolator (10) and each lateral restraint (9) is disposed in correspondence to said precast pillar (6).

4. The fabricated floating column type inspection pit vibration isolation system for rail transit as claimed in claim 1, wherein each prefabricated column (6) is connected with the corresponding prefabricated base plate (5) by means of embedded bolts (12), and a 20mm bedding layer is provided at the connection horizontal seam between each prefabricated column (6) and the corresponding prefabricated base plate (5).

5. The fabricated floating column type inspection pit vibration isolation system for rail transit according to claim 1, wherein the recess (7) is bottomed by a concrete slab (13) of the upper cover building (1) and is flanked by building decks (14) of the upper cover building (1).

Technical Field

The invention relates to the technical field of rail transit construction, in particular to an assembled floating column type inspection pit vibration isolation system for rail transit.

Background

The pillar type inspection pit is a functional component widely applied to the upper cover building of the rail transit.

In the prior art, a column type inspection pit on a rail transit upper cover building is usually of a cast-in-place concrete structure, large in field wet operation and directly connected with an upper cover building structural beam, and when the rail transit upper cover building has higher requirements on comfort level, the wheel-rail impact vibration of a rail transit train has larger influence on the vibration comfort level of the upper cover building, thereby seriously restricting the development of the upper cover property.

Therefore, how to more effectively reduce the influence of the wheel-rail impact vibration of the rail transit train on the vibration comfort of the rail transit upper cover building becomes a technical problem which needs to be solved urgently by the technical personnel in the field.

Disclosure of Invention

In view of the above-mentioned defects of the prior art, the invention provides a fabricated floating column type inspection pit vibration isolation system for rail transit, which can more effectively reduce the influence of wheel-rail impact vibration of rail transit trains on the vibration comfort of rail transit upper cover buildings.

In order to achieve the purpose, the invention discloses an assembled floating column type inspection pit vibration isolation system for rail transit, which is arranged between an upper cover building and a rail of the rail transit and comprises a plurality of assembled floating column type inspection pit units which are arranged right below the rail and are uniformly distributed along the length direction of the rail;

the assembled floating column type inspection pit units are sequentially connected end to form a long column type inspection pit covering the right lower part of the track;

a plurality of inspection holes are formed in the center line position of the bottom of the long-strip column type inspection pit along the length direction of the track;

each assembled floating column type inspection pit unit comprises a prefabricated bottom plate and a plurality of prefabricated columns;

each prefabricated bottom plate is of a strip-shaped structure, the shape of the strip-shaped structure is matched with that of the corresponding track, and the cross section of each prefabricated bottom plate is concave;

a plurality of prefabricated columns are arranged on the protruding parts on the two sides of each prefabricated bottom plate;

the upper end of each prefabricated column is connected with the corresponding track;

each prefabricated bottom plate is arranged in a groove of the upper cover building located right below the track;

the upper cover building also comprises a concrete beam arranged at the bottom of the groove, and the concrete beam is arranged corresponding to the convex part on each side of the prefabricated bottom plate;

a plurality of transverse constraints are arranged between each prefabricated bottom plate and the side walls of the two sides of the groove; and a plurality of vibration isolators are arranged between each prefabricated bottom plate and the bottom surface of the groove.

Preferably, a drainage ditch extending along the length direction of the track is arranged at the central line position of the bottom surface of the groove; the drainage ditch is located a plurality of under the inspection hole.

Preferably, each vibration isolator and each lateral restraint are arranged corresponding to the precast column.

Preferably, each prefabricated post all through buried bolt in advance with corresponding prefabricated bottom plate connects, and each prefabricated post and corresponding the connecting horizontal seam department between the prefabricated bottom plate sets up 20 mm's sitting thick liquid layer.

Preferably, the groove is formed by taking a concrete slab of the upper cover building as a bottom and taking a building surface layer of the upper cover building as two side walls.

The invention has the beneficial effects that:

the application of the invention can reduce the workload of on-site wet operation, accelerate the construction process and facilitate the later maintenance, and the invention has good vibration and noise reduction performance and can more effectively reduce the influence of the wheel-rail impact vibration of the rail transit train on the vibration comfort level of the rail transit upper cover building.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 shows a schematic elevation structure of an embodiment of the present invention.

Fig. 2 is a schematic plan view showing a structure of a fabricated floating pillar type inspection pit unit according to an embodiment of the present invention.

Fig. 3 is a schematic plan view of a groove according to an embodiment of the present invention.

Detailed Description