CN210395418U - Equipment foundation vibration isolation structure - Google Patents
Equipment foundation vibration isolation structure Download PDFInfo
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- CN210395418U CN210395418U CN201920695977.8U CN201920695977U CN210395418U CN 210395418 U CN210395418 U CN 210395418U CN 201920695977 U CN201920695977 U CN 201920695977U CN 210395418 U CN210395418 U CN 210395418U
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Abstract
The utility model provides an equipment foundation vibration isolation structure, the vibration isolation structure is located in the equipment foundation hole, the vibration isolation structure includes: the first vibration isolation layer is arranged in the equipment foundation pit; locate the inside second vibration isolation layer of first vibration isolation layer, the bottom of second vibration isolation layer is located the bottom top of first vibration isolation layer, the bottom of second vibration isolation layer with be equipped with the vibration isolation portion between the bottom of first vibration isolation layer, it has equipment foundation installation department to reserve in the second vibration isolation layer. The utility model discloses the outside on second vibration isolation layer is located to first vibration isolation layer cover, and when equipment basic vibration transmitted, preliminary vibration isolation effect can be played on first vibration isolation layer, the vibration isolation effect can further be played in setting up of second vibration isolation layer, realizes damping layer upon layer.
Description
Technical Field
The utility model relates to a construction technical field relates to an equipment foundation vibration isolation structure particularly.
Background
At present, the investment of China on science and technology research and development is more and more, a batch of high-end laboratories are built domestically, and the use of precision equipment instruments has extremely high requirements on vibration reduction and isolation of the equipment. Except adopting initiative damping platform, equipment also has proposed higher and higher requirement to the ground of equipment foundation and base damping, and the board is built to the superficial adoption more at present equipment foundation, damping cushion construction, nevertheless to the deeper main equipment foundation of buried depth, the construction of inconvenient vibration isolation structure and the shock insulation effect of vibration isolation structure are not good, and current vibration isolation structure suitability is not strong.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, the utility model provides an equipment foundation vibration isolation structure solves under the big condition of equipment foundation selling buried depth, is not convenient for construct the not good technical problem of vibration isolation structure and vibration isolation effect.
In order to achieve the purpose, the utility model adopts the technical proposal that: the utility model provides an equipment foundation vibration isolation structure locates in the equipment foundation hole, the vibration isolation structure includes:
the first vibration isolation layer is arranged in the equipment foundation pit;
the second vibration isolation layer is arranged in the first vibration isolation layer, the bottom of the second vibration isolation layer is positioned above the bottom of the first vibration isolation layer, and a vibration isolation part is arranged between the bottom of the second vibration isolation layer and the bottom of the first vibration isolation layer; and an equipment foundation installation part is reserved in the second vibration isolation layer.
In the embodiment of the present invention, the second vibration isolation layer includes enclosing and locating the second enclosure plate outside the equipment foundation installation portion and formed on the second enclosure plate with the second concrete layer between the foundation installation portion, the first vibration isolation layer includes enclosing and locating the first enclosure plate outside the second enclosure plate and formed on the first enclosure plate with between the second enclosure plate the first concrete layer.
In the embodiment of the utility model provides an in, first fender apron the second fender apron is the polyphenyl board, first concrete layer reaches second concrete layer all includes the concrete diapire and locates concrete diapire concrete lateral wall all around.
The embodiment of the utility model provides an in, the cross-section of equipment foundation pit is down trapezoidal, first enclosure baffle encloses and establishes into the rectangle frame, first enclosure baffle with the diapire of equipment foundation pit and lateral wall between have the interval.
In the embodiment of the utility model provides an in, first vibration isolation layer enclose establish the regional bottom of formation with be equipped with the graded gravel layer between the diapire of equipment foundation pit, the lateral part of first vibration isolation layer with be equipped with the gross sand layer between the pit lateral wall of equipment foundation pit.
The embodiment of the utility model provides an in, the grading gravel layer includes that multilayer cobble layer and cementation of fissures are under construction the coarse sand on each cobble layer, and the particle diameter of cobble reduces from bottom to top in each cobble layer.
In the embodiment of the utility model provides an in, the gradation sandstone layer with be equipped with flexible isolation layer between the bottom on first concrete layer.
In the embodiment of the utility model provides an in, vibration isolation portion is including locating flexible isolation layer with coarse sand layer and reef slag blanket between the first concrete layer, the reef slag blanket is located the below on coarse sand layer.
In the embodiment of the utility model, flexible isolation layer is the paper child felt isolation layer.
The utility model discloses owing to adopted above technical scheme, make it have following beneficial effect:
(1) the utility model discloses a grit gradation layer and coarse sand layer are equipped with respectively between first vibration isolation layer and the bottom wall and the lateral wall of equipment foundation pit, can improve the flexibility of equipment foundation pit bottom and both sides, improve the vibration isolation effect; a vibration isolation part is arranged between the bottom of the first vibration isolation layer and the bottom of the second vibration isolation layer, so that the vibration isolation effect of the equipment foundation pit in the vertical direction can be improved; the utility model discloses the isolation layer is flexible material, the vibration isolation effect can be played in the setting of flexible isolation layer.
(2) The utility model discloses the outside on second vibration isolation layer is located to first vibration isolation layer cover, and when equipment basic vibration transmitted, preliminary vibration isolation effect can be played on first vibration isolation layer, the vibration isolation effect can further be played in setting up of second vibration isolation layer, realizes damping layer upon layer.
(3) The utility model discloses simple structure, construction are convenient, and the vibration isolation is effectual, and the suitability is strong.
Drawings
Fig. 1 is a schematic sectional view of the basic vibration isolation structure of the device of the present invention.
Fig. 2 is a schematic plan view of the basic vibration isolation structure of the device of the present invention.
The correspondence of reference numerals to components is as follows:
a first vibration isolation layer 1; a first apron 11; a first concrete layer 12; a second vibration isolation layer 2; a second apron 21; a second concrete layer 22; an equipment base mounting part 3; a vibration isolation part 4; a coarse sand layer 41, a reef slag layer 42; a graded sandstone layer 5; 6, coarse sand; a flexible barrier layer 7.
Detailed Description
To facilitate understanding of the present invention, the following description is made with reference to the accompanying drawings and examples.
Referring to fig. 1 and 2, the present invention provides an equipment foundation vibration isolation structure, which is disposed in an equipment foundation pit, and the vibration isolation structure includes: the vibration isolation structure comprises a first vibration isolation layer 1 arranged in the equipment foundation pit and a second vibration isolation layer 2 arranged in the first vibration isolation layer 1, wherein the bottom of the second vibration isolation layer 2 is positioned above the bottom of the first vibration isolation layer 1, a vibration isolation part 4 is arranged between the bottom of the second vibration isolation layer 2 and the bottom of the first vibration isolation layer 1, and an equipment foundation installation part 3 is reserved in the second vibration isolation layer 2; the utility model discloses for the influence of the vibration of ground around the reduction to equipment during equipment foundation construction, adopt the two-stage damping measure, equipment finally falls in equipment foundation installation department 4 in second vibration isolation layer 2, layer upon layer the damping, the vibration isolation effect preferred.
In the embodiment of the present invention, the second vibration isolation layer 2 includes a second baffle plate 21 surrounding the outside of the equipment foundation installation part 3 and a second concrete layer 22 formed between the second baffle plate 21 and the foundation installation part 3, and the first vibration isolation layer 1 includes a first baffle plate 11 surrounding the outside of the second baffle plate 21 and the first concrete layer 12 formed between the first baffle plate 11 and the second baffle plate 21; in the embodiment of the present invention, the first baffle plate 11 and the second baffle plate 21 are both polystyrene boards, the first concrete layer 12 and the second concrete layer 22 both include a concrete bottom wall and concrete side walls disposed around the concrete bottom wall, and the concrete bottom wall and the concrete side walls enclose a rectangular pit forming an opening at the top end; if the requirement on vibration isolation is higher, a rubber pad can be used as a vibration isolation plate, and the damping effect is better. In the embodiment of the utility model, equipment basis installation department 3 is for locating mounting groove in the second concrete layer 12.
In the embodiment of the utility model, the cross section of the equipment foundation pit is inverted trapezoid, the first baffle plate 11 is enclosed into a rectangular frame, and a space is arranged between the first baffle plate 11 and the bottom wall and the side wall of the equipment foundation pit; a graded sand stone layer is arranged between the bottom of an area formed by the first vibration isolation layer 1 in a surrounding mode and the bottom wall of the equipment foundation pit, and a coarse sand layer is arranged between the side portion of the first vibration isolation layer and the pit side wall of the equipment foundation pit. Preferably, the graded gravel layer 5 comprises a plurality of pebble layers and coarse sand constructed on each pebble layer by crack pouring, and the particle size of pebbles in each pebble layer is reduced from bottom to top; specifically, the graded gravel layer comprises a first pebble layer, a second pebble layer arranged on the first pebble layer and a third pebble layer arranged on the second pebble layer, a coarse sand layer is arranged between the first pebble layer and the second pebble layer, coarse sand is arranged between the second pebble layer and the third pebble layer, and coarse sand is arranged on the third pebble layer; the embodiment of the utility model provides an in, the particle diameter A100-A200 of cobble in the first cobble layer, thickness are 150mm, the particle diameter A50-A100 of cobble in the second cobble layer, thickness is 150mm, the particle diameter A20-A50 of cobble in the third cobble layer, thickness are 150mm, and the coarse sand crack filling is tamped in the 100mm thick after backfilling one deck cobble layer every time, and final trade is filled out highly to be 600 mm.
Preferably, a flexible isolating layer 7 is arranged between the graded sandstone layer 5 and the bottom of the first concrete layer 12; in the embodiment of the utility model, flexible isolation layer 7 is the paper child felt isolation layer.
In the embodiment of the utility model provides an in, vibration isolation portion 4 includes from last coarse sand layer 41, the reef slag layer 42 that sets up extremely down in order, reef slag layer 42 is located coarse sand layer 41's below. The arrangement of the vibration isolation part 4 can further improve the flexibility of the bottom of the equipment foundation and improve the vibration isolation capability.
In the embodiment of the utility model provides an in, first vibration isolation layer 1 encloses the regional bottom of establishing formation and is equipped with graded sandstone layer 5, the lateral part of first vibration isolation layer 1 with be equipped with coarse sand layer 6 between the hole lateral wall of equipment foundation pit. The coarse sand layer 6 and the graded sand stone layer 5 are arranged, so that the vibration isolation capability of the bottom and two sides of the equipment foundation pit can be further improved.
The present invention has been described in detail with reference to the drawings, and the following description is made of the present invention.
S1: excavating the equipment foundation pit, and constructing the bottom of the first vibration isolation layer at the bottom of the equipment foundation pit;
s2: constructing the vibration isolation part on the bottom of the first vibration isolation layer;
s3: constructing a side part forming the first vibration isolation layer on the bottom of the first vibration isolation layer;
s4, constructing the second vibration isolation layer in the first vibration isolation layer, and reserving the equipment foundation installation part in the second vibration isolation layer;
specifically, the utility model discloses the construction of vibration isolation structure is the subsection construction, construct and the construction of horizontal vibration isolation structure including vertical vibration isolation structure, vertical vibration isolation structure construction includes following step:
1) after the equipment foundation is excavated to the bearing stratum, the equipment foundation is excavated downwards for 600mm more depth and is used for constructing a graded sandstone layer;
specifically, replacing and filling 150mm thick pebbles with large particle sizes of A100-A200, 150mm thick pebbles with small particle sizes of A50-A100 and 150mm thick pebbles with small particle sizes of A20-A50 from bottom to top in sequence, paving medium and coarse sand with the thickness of 100mm after each layer of pebble layer is backfilled, and tamping, wherein the final replacement and filling height is 600 mm;
2) paving a flexible isolation layer 7 on the graded sandstone layer 5;
3) a concrete bottom wall of the first concrete layer 12 is formed on the flexible isolation layer 7 in a pouring mode, the thickness of the concrete bottom wall of the first concrete layer 12 is 350mm, the concrete bottom wall is located in the middle of the flexible isolation layer, and the width of the concrete bottom wall is smaller than that of the flexible isolation layer 7 so that a pouring space of the concrete side wall of the first concrete layer 12 is reserved;
4) constructing and laying a 250mm thick reef slag layer 42 on the concrete bottom wall of the first concrete layer 12, laying 250mm thick coarse sand 41 on the reef slag layer 42, wherein the width of the reef slag 42 and the width of the coarse sand 41 are the same as the width of the concrete bottom wall;
the construction of the horizontal vibration isolation structure comprises the following steps:
erecting a side template of the first concrete layer 1, pouring concrete to form a concrete side wall of the first concrete layer 1, wherein the thickness of the concrete side wall is 200mm, and removing the side template of the first concrete layer after the concrete side wall is poured; in the embodiment of the present invention, the thickness of the concrete sidewall of the first concrete layer 1 is 200 mm;
a second enclosure baffle 21 is adhered to the inner side of the concrete side wall of the first concrete layer 1, and the second enclosure baffle 21 is a rear polystyrene board with the thickness of 100 mm;
erecting a template of a second concrete layer 2, reserving an equipment foundation installation part 3 in a pouring space of the second concrete layer 2, removing the template of the second concrete layer 2 after the second concrete layer 2 is formed by pouring, wherein the thickness of a concrete bottom plate of the second concrete layer 2 is 700mm, and the thickness of a concrete side wall of the second concrete layer 2 is 900 mm;
constructing a first enclosure baffle 11 on the outer side of the concrete side wall of the first concrete layer 1, wherein the first enclosure baffle 11 is a100 mm rear polystyrene board;
The present invention has been described in detail with reference to the drawings and the embodiments, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (9)
1. The utility model provides an equipment foundation vibration isolation structure, locates in the equipment foundation hole, its characterized in that, the vibration isolation structure includes:
the first vibration isolation layer is arranged in the equipment foundation pit;
locate the inside second vibration isolation layer of first vibration isolation layer, the bottom of second vibration isolation layer is located the bottom top of first vibration isolation layer, the bottom of second vibration isolation layer with be equipped with the vibration isolation portion between the bottom of first vibration isolation layer, it has equipment foundation installation department to reserve in the second vibration isolation layer.
2. The vibration isolation structure according to claim 1, wherein the second vibration isolation layer includes a second baffle plate surrounding the outside of the equipment foundation installation portion and a second concrete layer formed between the second baffle plate and the foundation installation portion, and the first vibration isolation layer includes a first baffle plate surrounding the outside of the second baffle plate and a first concrete layer formed between the first baffle plate and the second baffle plate.
3. The vibration isolation structure of an equipment foundation of claim 2, wherein the first and second baffles are polystyrene boards, and the first and second concrete layers each comprise a concrete bottom wall and a concrete side wall disposed around the concrete bottom wall.
4. The vibration isolation structure of equipment foundation according to claim 2, wherein the cross section of the equipment foundation pit is an inverted trapezoid, the first enclosure plate is enclosed into a rectangular frame, and a space is formed between the first enclosure plate and the bottom wall and the side wall of the equipment foundation pit.
5. The equipment foundation vibration isolation structure according to claim 4, wherein a graded sand layer is provided between the bottom of the region surrounded by the first vibration isolation layer and the bottom wall of the equipment foundation pit, and a coarse sand layer is provided between the side portion of the first vibration isolation layer and the pit side wall of the equipment foundation pit.
6. The equipment foundation vibration isolation structure according to claim 5, wherein the graded gravel layer comprises a plurality of pebble layers and coarse sand grouted on each pebble layer, and the particle size of pebbles in each pebble layer is reduced from bottom to top.
7. The equipment foundation isolation structure of claim 5, wherein a flexible isolation layer is provided between the graded gravel layer and the bottom of the first concrete layer.
8. The equipment foundation vibration isolation structure according to claim 7, wherein the vibration isolation part comprises a coarse sand layer and a reef slag layer which are arranged between the flexible isolation layer and the first concrete layer, and the reef slag layer is arranged below the coarse sand layer.
9. The equipment foundation isolation structure of claim 7, wherein said flexible insulation layer is a paper batting felt insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920695977.8U CN210395418U (en) | 2019-05-16 | 2019-05-16 | Equipment foundation vibration isolation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920695977.8U CN210395418U (en) | 2019-05-16 | 2019-05-16 | Equipment foundation vibration isolation structure |
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| CN210395418U true CN210395418U (en) | 2020-04-24 |
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| CN201920695977.8U Active CN210395418U (en) | 2019-05-16 | 2019-05-16 | Equipment foundation vibration isolation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172996A (en) * | 2019-05-16 | 2019-08-27 | 中国建筑第八工程局有限公司 | Equipment Foundations vibration insulation structure and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172996A (en) * | 2019-05-16 | 2019-08-27 | 中国建筑第八工程局有限公司 | Equipment Foundations vibration insulation structure and its construction method |
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