CN110847409A - A three-dimensional vibration isolation structure of a subway superstructure - Google Patents

Abstract

The invention provides a three-dimensional vibration isolation structure of a subway upper cover building, which aims to solve the technical problem that the existing vibration isolation measure is single in the prior art; the subway structure comprises a base, a structural column, a rubber vibration isolation assembly and a plurality of damping assemblies, wherein the base is arranged above a subway structure, and an accommodating cavity is formed in the upper opening of the base; the structural column is movably arranged in the accommodating cavity through the rubber vibration isolation assembly and the damping assembly, and the rubber vibration isolation assembly is arranged between the bottom of the accommodating cavity and the lower end of the structural column and used for reducing vibration applied to the lower end of the structural column; the damping assemblies are arranged between the inner side wall of the accommodating cavity and the side face of the structural column along the circumferential direction of the structural column and used for reducing vibration of the side face of the structural column.

Description

A three-dimensional vibration isolation structure of a subway superstructure

technical field

The invention relates to the field of construction, in particular to a three-dimensional vibration isolation structure of a subway superstructure.

Background technique

With the continuous expansion of the city scale and the continuous growth of the urban population, my country's urban rail transit has also entered a stage of rapid development. The subway is also rapidly emerging in major cities due to its characteristics of safety, speed, comfort and punctuality, and large transportation capacity. Building property development can realize the full, efficient and intensive use of land resources, improve social and economic benefits and the quality of life of residents, and is conducive to the sustainable development of the city. However, the design of the superstructure of the subway should not only consider the influence of earthquake action, but also ensure the safety performance of the superstructure under the action of earthquake. At the same time, the vibration generated by the operation of the subway train will be transmitted to the upper building through the foundation of the building, causing the building structure The vibration of the subway system even causes secondary noise inside the structure, which has a great impact on the work and life of people in the building. Therefore, it is necessary to take vibration isolation (seismic) measures to meet the safety and comfort of the subway superstructure. . At present, the existing vibration isolation (seismic) measures are generally only a single seismic isolation action or subway vibration isolation, and the vibration isolation (seismic) direction considered is only a single horizontal or vertical vibration isolation (seismic), and there is no isolation of subway vibration (seismic) The organic combination of (weak vibration), seismic isolation (strong earthquake), and three-dimensional vibration isolation (seismic) cannot effectively achieve vibration isolation (seismic) of the superstructure of the subway.

SUMMARY OF THE INVENTION

The present invention provides a three-dimensional vibration isolation structure of a subway superstructure to solve the technical problem of single vibration isolation measures in the prior art.

The solution of the present invention to solve the above-mentioned technical problems is as follows: a three-dimensional vibration isolation structure of a building above the subway, comprising a base, a structural column, a rubber vibration isolation assembly and a plurality of damping assemblies, the base is installed above the subway structure, The upper part of the base is open and an accommodating cavity is formed inside; the structural column is movably installed in the accommodating cavity through the rubber vibration isolation component and the damping component, and the rubber vibration isolation component is installed between the bottom of the accommodating cavity and the lower end of the structural column, to reduce the vibration of the lower end of the structural column; a plurality of the damping components are installed on the container along the circumferential direction of the structural column. It is placed between the inner side wall of the cavity and the side surface of the structural column, so as to reduce the vibration on the side surface of the structural column.

In the three-dimensional vibration isolation structure of the subway superstructure provided by the present invention, since the base is installed above the subway structure, the rubber vibration isolation component is installed between the bottom of the accommodating cavity and the lower end of the structural column, and the rubber vibration isolation component is installed between the bottom of the accommodating cavity and the lower end of the structural column. Relieve the vibration of the lower end of the structural column, which can effectively isolate the subway vibration. At the same time, the damping component is installed between the inner side wall of the accommodating cavity and the side of the structural column along the circumferential direction of the structural column, and the damping component is used to reduce the side of the structural column. The vibration received can effectively isolate the seismic vibration, so as to achieve the effect of three-dimensional vibration isolation.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, and implement it according to the content of the description, the preferred embodiments of the present invention are described in detail below with the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic structural diagram of a three-dimensional vibration isolation structure of a subway superstructure according to an embodiment of the present invention;

Fig. 2 is the cross-sectional schematic diagram of A-A in Fig. 1;

Fig. 3 is the cross-sectional schematic diagram of the direction B-B in Fig. 1;

4 is a schematic structural diagram of a damping assembly in an embodiment of the present invention;

5 is a schematic structural diagram of a vertical rubber composite block in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an oblique rubber composite block in an embodiment of the present invention.

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention. The invention is described in more detail by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become apparent from the following description and claims. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.

As shown in FIG. 1 to FIG. 3 , the present invention provides a three-dimensional vibration isolation structure of a subway superstructure, including a base 1 , a structural column 2 , a rubber vibration isolation component 3 and a plurality of damping components 4 .

Wherein, the base 1 is installed above the subway structure, and its upper part is open and an accommodating cavity 1a is formed inside; The bottom wall 111 and the inclined bottom wall 112 , the inclined bottom wall 112 is located around the horizontal bottom wall 111 and is inclined, and the inner side wall 12 is located on the upper side of the inclined bottom wall 112 .

The structural column 2 is movably installed in the accommodating cavity 1a through the rubber vibration isolation component 3 and a plurality of damping components 4. The lower end of the structural column 2 includes a horizontal end surface 21 and an inclined end surface 22 formed on the horizontal end surface 21. The horizontal bottom wall 111 is disposed opposite to each other, and the inclined end surface 22 is disposed opposite to the inclined bottom wall 112 .

As shown in FIGS. 1 , 5 and 6 , the rubber vibration isolation assembly 3 includes a vertical rubber assembly block 31 and an oblique rubber assembly block 32 , and the vertical rubber assembly block 31 is installed between the horizontal end surface 21 and the horizontal bottom wall 111 , the oblique rubber assembly block 32 is installed between the inclined end face 22 and the inclined bottom wall 112, the vertical rubber assembly block 31 can achieve effective vertical vibration reduction effect, and the oblique rubber assembly block 32 can achieve effective horizontal vibration reduction Effectively, in the specific installation and debugging process, the oblique rubber composite block 32 can be set by itself according to the building layout and load bearing, so as to adapt to the vibration reduction requirements in different situations.

Among them, in this embodiment, in order to have a better effect of vibration reduction and energy dissipation for the vertical rubber assembly block 31 and ensure that it has sufficient bearing capacity to achieve displacement energy dissipation, the vertical rubber assembly block 31 is composed of a laminated structure, The vertical rubber assembly block 31 includes a first upper sealing plate 311, a first lower sealing plate 312, a plurality of first rubber layers 313 and a plurality of first steel plate layers 312. The upper end of the first upper sealing plate 311 is connected to the horizontal end surface 21. The lower end of the lower sealing plate 312 is connected to the horizontal bottom wall 111, and a plurality of first rubber layers 313 and a plurality of first steel plate layers 312 are sequentially stacked between the first upper sealing plate 311 and the first lower sealing plate 312; Both the upper sealing plate 311 and the first lower sealing plate 312 are of steel structure, and are respectively connected with the structural column and the base by pre-embedded riveting bolts; similarly, the oblique rubber combination block 32 includes the second upper sealing plate 321, the first Two lower sealing plates 322, a plurality of second rubber layers 323 and a plurality of second steel plate layers 324, the upper end of the second upper sealing plate 321 is connected to the inclined end face 22, the lower end of the second lower sealing plate 322 is connected to the inclined bottom wall 112, The second rubber layer 323 and a plurality of second steel plate layers 324 are stacked in sequence between the second upper sealing plate 321 and the second lower sealing plate 322. The second upper sealing plate 321 and the second lower sealing plate 322 are also of steel structure, and It is connected with the structural column and the base by embedded riveting bolts.

The thickness and number of layers of the first rubber layer 313 and the first steel plate layer 312 can be designed according to the actual vibration reduction requirements. Similarly, the thickness and number of layers of the second rubber layer 323 and the second steel plate layer 324 can also be designed according to the actual requirements. Vibration reduction requirements are designed to achieve effective distribution of vertical and horizontal vibration isolation effects.

In this embodiment, the cross section of the structural column 2 is a square structure, the number of damping components 4 is four, and the four damping components 4 are installed on the four sides of the structural column 2 at even intervals, and the structure of the oblique rubber composite block The number is also 4. In other embodiments, the cross-section of the structural column 2 may also be other polygons, and the corresponding number of damping components and inclined rubber combination blocks may also be adjusted according to the actual situation.

Wherein, as shown in FIGS. 2 and 4 , each damping assembly 4 includes a viscous damper 41 , a steel spring 42 , a first connecting piece 43 and a second connecting piece 44 , and the first connecting piece 43 and the second connecting piece 44 Installed on both ends of the viscous damper 41 respectively, the steel spring 42 is sleeved on the outer side of the viscous damper 41 and the two ends are respectively connected to the first connecting piece 43 and the second connecting piece 44, the viscous damper 41 is placed on the outside of the viscous damper 41. In the steel spring 42, the instability of the steel spring can be effectively prevented. The first spherical hinge portion 431 is formed on the side of the first connecting member 43 away from the viscous damper 41, and the second connecting member 44 is formed on the side away from the viscous damper 41. A second spherical hinge portion 441 is formed, the first spherical hinge portion 431 is rotatably connected to the side surface of the structural column 2, and the second spherical hinge portion 441 is rotatably connected to the inner side wall 12 of the accommodating cavity 1a.

Specifically, in order to strengthen the lateral strength of the structural column and protect the structural column 2 from being damaged under tension, a steel plate 5 is installed on the outer side wall of the structural column 2 along its circumference. Since the cross-section of the structural column 2 is a square structure, the steel plate 5 The number of 5 is also four, a first mounting seat 45 is mounted on one side of the steel plate 5 corresponding to the damping assembly 41, and a second mounting seat 46 is mounted on the inner side wall 12 of the accommodating cavity 1a corresponding to the position of the first mounting seat 45, The first spherical hinge portion 431 is movably hinged to the first mounting seat 45, and the second spherical hinge portion 441 is movably hinged to the second mounting seat 46; wherein, the first mounting seat 45 and the steel plate 5 are connected by embedded riveting bolts , the two ends of the viscous damper 41 and the steel spring 42 are bidirectionally hinged with the first mounting seat 45 and the second mounting seat 46 by a spherical hinge structure, which can realize the side between the first mounting seat 45 and the second mounting seat 46. The sliding movement can ensure the relative displacement and rotation angle of the structural column 2 in the vertical direction. When the vertical vibration is too large, the adaptive characteristics of the spherical hinge structure will cause the viscous damper 41 and the steel spring 42 to present a certain inclination angle. , which can effectively achieve two-way energy consumption in the horizontal and vertical directions.

Specifically, the viscous damper 41 includes a sleeve 411, a guide rod 412 and a piston 413. One end of the sleeve 411 is open and the other end is closed. The guide rod 412 is movably inserted into the open end of the sleeve 411. The sleeve 411 A damping medium 414 is installed inside, the piston 413 is movably installed in the sleeve 411 , and one end of the guide rod 412 is movably inserted into the open end of the sleeve 411 and is fixedly connected with the piston 413 .

In order to effectively isolate the external environment and at the same time be able to adapt to the deformation between the structural column 2 and the base 1 , a flexible cover plate 6 is installed at the upper end opening of the base 1 .

The pre-embedded riveting bolt connection mentioned in this embodiment is by pre-embedding the riveting bolts in the structural column or the base, and then connecting the first upper sealing plate 311 , the first lower sealing plate 312 , and the second upper sealing plate Components such as 321 , the second lower sealing plate 322 and the first mounting seat 45 are welded to the ends of the rivet bolts reserved in advance.

In the three-dimensional vibration isolation structure of the subway superstructure provided by this embodiment, the vertical rubber block 31 mainly dissipates the energy of vertical motion, and the oblique rubber block 32 can dissipate the energy of horizontal motion and vertical motion at the same time, This measure can eliminate the horizontal and vertical effects of subway vibration on the superstructure, so that the superstructure can meet the comfort requirements; viscous dampers and steel springs can provide greater stiffness and energy consumption, while limiting structural columns Large displacement occurs to ensure the safety of the superstructure under the action of the earthquake; when the vibration generated by the operation of the subway below is transmitted to the base, the vibration of the subway can be effectively isolated through this three-dimensional vibration isolation structure; under the action of the earthquake When the vibration is large, the vertical and oblique rubber blocks are not enough to completely dissipate this part of the energy. The viscous damper and the steel spring can be used as a supplementary vibration and energy dissipation device to achieve effective shock absorption.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form; any person of ordinary skill in the industry can smoothly implement the present invention as shown in the accompanying drawings and above; however, any Those skilled in the art, without departing from the scope of the technical solution of the present invention, make use of the above-disclosed technical content to make some changes, modifications and equivalent changes of evolution are equivalent embodiments of the present invention; at the same time, Any alteration, modification and evolution of any equivalent changes made to the above embodiments according to the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (9)

1. a three-dimensional vibration isolation structure of a subway superstructure, is characterized in that, comprises base, structural column, rubber vibration isolation assembly and multiple damping assemblies, described base is installed on the top of subway structure, described base The upper part is open and an accommodating cavity is formed inside; the structural column is movably installed in the accommodating cavity through the rubber vibration isolation component and a plurality of the damping components, and the rubber vibration isolation component is installed between the bottom of the accommodating cavity and the lower end of the structural column, to reduce the vibration of the lower end of the structural column; a plurality of the damping components are installed on the container along the circumferential direction of the structural column. It is placed between the inner side wall of the cavity and the side surface of the structural column, so as to reduce the vibration on the side surface of the structural column. 2 . The three-dimensional vibration isolation structure of a subway superstructure according to claim 1 , wherein the accommodating cavity has a bottom and an inner side wall, and the bottom has a horizontal bottom wall and is located around the horizontal bottom wall. 3 . The lower end of the structural column is movably installed in the accommodating cavity, and the lower end of the structural column includes a horizontal end surface and an inclined end surface located around the horizontal end surface. The horizontal end surface It is arranged opposite to the horizontal bottom wall, and the inclined end face is arranged opposite to the inclined bottom wall; the inner side wall is located on the upper side of the inclined bottom wall, and the rubber vibration isolation assembly includes a vertical rubber combination block and an inclined bottom wall. The vertical rubber assembly block is installed between the horizontal end surface and the horizontal bottom wall, and the oblique rubber assembly block is installed between the inclined end surface and the inclined bottom wall. 3 . The three-dimensional vibration isolation structure of a subway superstructure according to claim 1 , wherein each of the damping components comprises a viscous damper, a steel spring, a first connector and a second connector, and the The first connecting piece and the second connecting piece are respectively installed on both ends of the viscous damper, the steel spring is sleeved on the outside of the viscous damper, and the two ends are respectively connected to the first connection A first spherical hinge portion is formed on a side of the first connecting member away from the viscous damper, and a side of the second connecting member away from the viscous damper is formed There is a second spherical hinge part, the first spherical hinge part is rotatably connected to the side surface of the structural column, and the second spherical hinge part is rotatably connected to the inner side wall of the accommodating cavity. 4 . The three-dimensional vibration isolation structure of a subway superstructure according to claim 3 , wherein the outer side wall of the structural column is installed with a steel plate along its circumferential direction, and the steel plate is installed corresponding to one side of the damping assembly. 5 . There is a first mounting seat, a second mounting seat is mounted on the inner side wall of the accommodating cavity corresponding to the position of the first mounting seat, and the first spherical hinge part is movably hinged to the first mounting seat, The second spherical hinge portion is movably hinged to the second mounting seat. 5. The three-dimensional vibration isolation structure of a subway superstructure according to claim 3, wherein the viscous damper comprises a sleeve, a guide rod and a piston, one end of the sleeve is open and the other end is closed, The guide rod is movably inserted into the open end of the sleeve, a damping medium is installed in the sleeve, the piston is movably installed in the sleeve, and one end of the guide rod is movable It is inserted into the open end of the sleeve and fixedly connected with the piston. 6 . The three-dimensional vibration isolation structure of a subway superstructure according to claim 4 , wherein the cross section of the structural column is a square structure, the number of the damping components is four, and the four damping components are four. 7 . The components are installed on the four sides of the structural column evenly spaced, and the number of the steel plates is also four. 7 . The three-dimensional vibration isolation structure of a subway superstructure building according to claim 2 , wherein a flexible cover plate is installed at the upper end opening of the base. 8 . 8 . The three-dimensional vibration isolation structure of the subway superstructure according to claim 2 , wherein the vertical rubber composite block comprises a first upper sealing plate, a first lower sealing plate, several first rubber layers and several The first steel plate layer, the upper end of the first upper sealing plate is connected to the horizontal end surface, the lower end of the first lower sealing plate is connected to the horizontal bottom wall, a plurality of the first rubber layers and a plurality of the first The steel plate layers are sequentially stacked at intervals between the first upper sealing plate and the first lower sealing plate. 9 . The three-dimensional vibration isolation structure of the subway superstructure according to claim 2 , wherein the oblique rubber composite block comprises a second upper sealing plate, a second lower sealing plate, several second rubber layers and several The second steel plate layer, the upper end of the second upper sealing plate is connected to the inclined end face, the lower end of the second lower sealing plate is connected to the inclined bottom wall, a plurality of the second rubber layers and a plurality of the second The steel plate layers are sequentially stacked at intervals between the second upper sealing plate and the second lower sealing plate.

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