Anti-micro-vibration assembly test foundation platform for ultra-large-volume concrete

Abstract

The utility model provides a super-volume concrete micro-vibration prevention assembly test foundation platform. The super-volume concrete micro-vibration prevention assembly test foundation platform comprises an upper T-shaped detection test platform, an air spring and a lower row shear low wall, the air spring is arranged between the T-shaped detection test platform and the row shear low wall, so that the T-shaped detection test platform is isolated from the row shear low wall during working; the row shear low wall comprises an upper connecting beam, a lower connecting beam, a cross wall Q1 and a cross wall Q2, the T-shaped detection test platform and the row shear low wall are physically separated by adopting a steel mold, and the steel mold is used for isolating the T-shaped detection test platform and the row shear low wall which are in a non-working state at ordinary times; the space distance formed between the cross wall Q1 and the cross wall Q2 and the space distance formed between the cross wall Q2 and the cross wall Q2 serve as rectangular ducts and are used for overhauling and maintaining equipment. Automatic assembly can be achieved according to requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-micro-vibration systems for building structures in clean workshops, and in particular relates to an ultra-large volume concrete anti-micro-vibration assembly test foundation platform. Background Art

[0002] At present, with the rapid development of scientific and technological innovation, various anti-micro-vibration platforms have been widely used in various high-precision scientific experiments, optical precision instrument manufacturing and equipment debugging and production in the foresight of scientific research. Large-scale scientific research and development instruments and equipment have higher and higher requirements for the environment and anti-micro-vibration during use and debugging. Taking optical manufacturing, optical imaging, photolithography, and integrated circuits as examples, the environmental micro-vibration of their optical detection, testing, photolithography, and production processes has been controlled within the VC-D or VC-F level range or higher, that is, the vibration speed is basically required to be controlled within 6um / s or 1.5um / s or higher.

[0003] In practice, when different precision instruments and equipment generate vibrations themselves, various scientific research precision instruments and equipment are increasingly sensitive to anti-micro-vibration environmental control. A small amount of micro-vibration will affect the detection and debugging of precision instruments and equipment, and even fail to achieve the expected scientific research results, reducing the output rate of scientific research products. Since micro-vibration is an environmental vibration with a low amplitude that affects the normal operation of precision instruments and equipment and scientific research process levels, the building structure anti-micro-vibration system is further designed to ensure the normal operation of precision equipment and instruments and reduce the impact of environmental vibration. The ultra-large volume concrete anti-micro-vibration platform also requires that the anti-micro-vibration platform building foundation structure can ensure that the vibration value of the equipment foundation platform meets the vibration value requirements of the process parameters of different precision instruments and equipment. Therefore, the isolation of micro-vibration becomes very important.

[0004] Most of the traditional anti-micro-vibration concrete base platform designs do not take into account the specific limited use space and subsequent maintenance and replacement, but use large-volume reinforced concrete blocks with large height and thickness to improve the overall rigidity and deadweight. The disadvantages of this large-volume concrete are: the construction process is difficult and the cycle is long. During the construction, special construction plans must be adopted to take measures to ensure that the concrete does not crack and improve the yield rate, which invisibly increases the cost of the concrete foundation platform and is not easy to improve economic benefits. The lower support base of the T-shaped platform of the equipment mostly adopts a large-block integral concrete foundation, and the base unit is relatively large. After the foundation platform is formed, it cannot meet the process adjustment, which is not conducive to the installation and maintenance of the anti-micro-vibration air spring and its supporting equipment in the later stage, and the cost of construction and installation is relatively high. Utility Model Content

[0005] To solve the above technical problems, the present utility model provides an anti-microvibration assembly test foundation platform for super-large volume concrete, which is a concrete anti-microvibration base for the test and debugging of large-scale scientific research precision instrument equipment and scientific research products, ensuring the normal operation of precision equipment and instruments, weakening the influence of environmental vibration, ensuring the vibration value requirements of the equipment foundation platform, and meeting the vibration value requirements of different precision instrument equipment process parameters. This platform can be used for the installation and detection of various large and medium-sized scientific research equipment, improving the efficiency and accuracy of equipment installation, and can achieve automated assembly according to requirements, which is of great significance for improving the progress and accuracy of equipment assembly and debugging.

[0006] To achieve the above object, the present utility model adopts the following technical solutions:

[0007] An anti-microvibration assembly test foundation platform for super-large volume concrete includes a T-shaped detection test platform at the upper part, air springs, and a row of shear walls at the lower part; the air springs are arranged between the T-shaped detection test platform and the row of shear walls, so that the T-shaped detection test platform is isolated from the row of shear walls during operation; the row of shear walls includes upper connecting beams, lower connecting beams, transverse walls Q1 and transverse walls Q2. The upper connecting beams and the lower connecting beams are arranged in parallel for 2 rows, and the transverse walls Q1 and the transverse walls Q2 are arranged in parallel for a total of 10 seats; it also includes a raft slab at the bottom of the foundation. The row of shear walls is placed on the cushion of the raft slab at the bottom of the foundation and is cast together with it; upper connecting beams and lower connecting beams made of concrete are respectively arranged above and below the transverse walls Q1 and the transverse walls Q2; the upper connecting beams, the lower connecting beams, the transverse walls Q1 and the transverse walls Q2 are cast together at the same time; the T-shaped detection test platform and the row of shear walls are physically separated by steel molds, and the steel molds are used to isolate the T-shaped detection test platform and the row of shear walls in the non-working state; the space distances formed between the transverse walls Q1 and the transverse walls Q2 and between the transverse walls Q2 and the transverse walls Q2 are used as rectangular culverts for equipment maintenance and repair.

[0008] Further, the size of the T-shaped detection test platform is 20 meters × 8 meters.

[0009] Further, the distance between two air springs is 2133.5 mm.

[0010] Further, the distance between the walls of multiple transverse walls Q1 and transverse walls Q2 is not less than 1100 mm; the center distance between adjacent rectangular culverts is 1100 mm; the wall thickness of the transverse walls Q1 and the transverse walls Q2 is 900 mm - 1100 mm, and the length is 8000 mm.

[0011] Further, the distance between the upper connecting beam and the lower connecting beam is 1100 mm; the height of the T-shaped detection test platform from the ground is between 1800 mm and 2000 mm.

[0012] Furthermore, the upper T-shaped detection test platform, the lower transverse wall Q1, and the lower transverse wall Q2 all adopt reinforced concrete structures, and their strength grades are not lower than C30.

[0013] Furthermore, a 20-mm steel plate is laid at the bottom of the T-shaped detection test platform as a steel form to separate the lower row of shear walls. The steel plate shall not be removed after concrete pouring.

[0014] Furthermore, the dimensions of the two mutually perpendicular sides of the cross-sections of the upper connecting beam, the lower connecting beam, and the row of shear walls are not less than 500 mm × 300 mm.

[0015] Furthermore, the total thickness of the T-shaped detection test platform is not less than 900 mm, the platform length is not less than 500 mm, and the lower part of the T-shaped detection test platform has a protruding part with a length of not less than 400 mm.

[0016] Furthermore, a spacing of not less than 160 mm is reserved between the support points of the row of shear walls and the T-shaped detection test platform for installing air springs. The cross-section of the support of the air spring is not less than 920 mm × 700 mm.

[0017] Beneficial effects:

[0018] The utility model can meet the requirements of various precision equipment for large, medium, and small anti-microvibration foundations during new (re)construction and expansion. Especially under the interference of external adverse conditions, it can strengthen the resistance and restriction against the difficult-to-control vibration from the X and Y axis directions, so as to meet the stable conditions for scientific research production and the use and debugging of precision instrument equipment. In a narrow and limited renovation space, it flexibly solves the problems that air springs cannot be installed and it is difficult to perform post-maintenance after the overall casting of the traditional anti-microvibration detection test platform base. The platform makes use of the limited space of the original factory building and also makes use of the space under the foundation (there is a 1.1-meter gap between the foundation shear walls, which provides an effective space for later inspection and maintenance. Multiple rectangular culverts 7 form channels, and air spring air tanks and electrical supporting equipment can also be placed in the channels). At the same time, it is also convenient for later personnel to walk around for inspection, replacement, and maintenance. Fundamentally, it innovatively changes the design and manufacturing method and concept of the traditional concrete anti-microvibration base.

[0019] In actual use, the present utility model takes into account various influencing factors such as a large number of large-scale air-conditioning equipment and electrical equipment on the roof, which generate a large vibration source during simultaneous operation, and completely solves the problem that the anti-microvibration platform has been difficult to reach the VC-D or VC-F level range due to interference from external uncertain factors. Before the platform works, the air springs are inflated first, and the platform is isolated from the foundation to reduce the influence of ground vibration on the platform. The design of the present utility model is reasonable according to the requirements. The lower foundation of the entire structure significantly improves the anti-disturbance and stability performance of the entire platform during use, thereby reducing the torsional deformation caused by disturbance, improving the strength of the platform and greatly reducing the low-frequency vibration interference caused by the unstable factors brought by disturbance, ensuring the stability performance of the upper assembly detection platform. In practice, a relative displacement value represents the relative ratio of the vibration magnitude of each point at a certain natural frequency and does not reflect the actual vibration value. Each vibration mode of the structure represents a motion characteristic of each point of the structure, and the displacement between each point maintains a fixed ratio. Through professional testing, the analysis results show that the use of the present utility model meets the system vibration isolation technical requirements and achieves better vibration isolation effect than VC-D. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view of a super-large volume concrete anti-microvibration assembly test foundation platform of the present utility model;

[0021] Figure 2 is the top view of a super-large volume concrete anti-microvibration assembly test foundation platform of the present utility model;

[0022] Figure 3 is the cross-sectional view of a super-large volume concrete anti-microvibration assembly test foundation platform of the present utility model.

[0023] Wherein: 1-T-shaped detection test platform; 2-row of shear walls; 3-upper connecting beam; 4-lower connecting beam; 5-air spring; 6-steel formwork; 7-rectangular culvert. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Figures 1-3As shown in the figure, a super-large volume concrete anti-microvibration assembly test foundation platform of the present utility model includes a T-shaped detection test platform 1 at the upper part, air springs 5, and a row of reinforced concrete shear walls 2 at the lower part. The air springs 5 are arranged between the T-shaped detection test platform 1 and the row of shear walls 2, so that the relationship between the T-shaped detection test platform 1 and the row of shear walls 2 is isolated during the operation of the T-shaped detection test platform 1. The length of the anti-microvibration foundation platform is 20 meters; the size of the T-shaped detection test platform 1 is 20 meters × 8 meters; the row of shear walls 2 includes an upper connecting beam 3, a lower connecting beam 4, and transverse walls. The upper connecting beam 3 and the lower connecting beam 4 are arranged in parallel for 2 rows, and the transverse walls (i.e., Figure 2 the transverse walls Q1 and Q2 in

[0026] are arranged in parallel for 10 seats. The anti-microvibration foundation platform also includes a 200-mm-thick foundation bottom raft slab, which is used to increase the overall stability of the anti-microvibration foundation platform; the row of shear walls 2 is placed on the cushion layer of the foundation bottom raft slab and is cast together with it; concrete upper connecting beams 3 and lower connecting beams 4 are arranged between multiple transverse walls Q1 and Q2 and are reliably connected to increase the strength; the upper connecting beam 3 and the lower connecting beam 4 are cast together with the row of shear walls 2 at the same time to increase the overall stability of the row of shear walls 2; the T-shaped detection test platform 1 and the row of shear walls 2 are physically separated by a 20-mm-thick steel formwork 6, and the steel formwork 6 is used to isolate the T-shaped detection test platform 1 and the row of shear walls 2 in the non-operating state; the space distances formed between the transverse walls Q1 and Q2 and between the transverse walls Q2 and Q2 are used as rectangular ducts 7 for equipment maintenance and repair.

[0027] Preferably, the distance between two air springs 5 is 2133.5 mm.

[0028] When specifically setting, as Figure 2 shown, the T-shaped detection test platform 1 is arranged in a clean workshop (cleanliness class 100, temperature 21 ± 0.5 °C, humidity 40% 2% RH, vibration isolation requirement VC-D and above), and the overall flatness reaches ±1 mm, and the surface is coated with epoxy resin floor paint. In order to reduce airborne particles, special condition requirements such as the clean grade and the flatness of the floor of the T-shaped detection platform 1 less than ±1 mm or higher flatness should be considered during the design.

[0029] As Figure 2As shown, the supports of multiple air springs 5 arranged in parallel at the lower part of the T-shaped detection test platform 1 are evenly distributed under the T-shaped detection test platform 1. Special attention should be paid to the fact that the wall widths at both ends of the transverse wall Q1 and the transverse wall Q2 should be determined according to the total size of the platform. The rectangular duct 7 can pass through from left to right and at the same time serves as a clean return air duct. The center distance between adjacent rectangular ducts 7 is 1100 mm. The wall thickness of the transverse wall Q2 is 900 mm - 1100 mm and the length is 8000 mm. The upper connecting beam 3 and the lower connecting beam 4 strengthen the strength of the row of shear walls 2, making the support of the lower foundation for the upper T-shaped detection test platform 1 more stable and reliable. The supports of each air spring 5 arranged in parallel, the transverse wall Q1, and the transverse wall Q2 evenly bear the vertical acting force of the T-shaped detection test platform 1. The distance between the upper connecting beam 3 and the lower connecting beam 4 is also 1100 mm, forming multiple rectangular ducts with a rectangular structure together with the transverse wall Q1 and the transverse wall Q2. The thickness of the upper T-shaped detection test platform 1 is not less than 900 mm, and the height of the T-shaped detection test platform 1 from the ground is between 1800 mm and 2000 mm. The upper T-shaped detection test platform 1 and the lower transverse wall Q1 and transverse wall Q2 should both adopt reinforced concrete structures, and the strength grade shall not be lower than C30.

[0030] Preferably, 20 air springs 5 are evenly distributed on both sides of the reinforced concrete T-shaped detection test platform 1. When the platform is working, the air springs 5 are inflated and serve as the fulcrums of the T-shaped detection test platform 1, physically isolating it from the lower row of shear walls 2.

[0031] Preferably, fulcrums are arranged on the left and right sides of the row of shear walls 2, and air springs 5 are evenly distributed.

[0032] Preferably, the reinforced concrete upper connecting beam 3 and lower connecting beam 4 arranged between the row of shear walls 2 and the row of shear walls 2 form multiple rectangular ducts 7, which are evenly distributed in each transverse wall of each row of shear walls 2.

[0033] Preferably, the center distance between the rectangular ducts 7 is 1100 mm.

[0034] Preferably, when specifically setting the rectangular duct 7, the wall-to-wall interval of the opening of the rectangular duct 7 is 1100 mm and the center distance is 550 mm. The thickness of the row of shear walls 2 is 900 mm - 1100 mm. Specific applications can be adjusted according to the construction site conditions.

[0035] Preferably, the steel bars of the upper connecting beam 3, the lower connecting beam 4, and the row of shear walls 2 are all tied on-site and should meet the requirements for the anchorage length of the steel bars. The concrete is poured in one go, and after the concrete is poured, it should be cured and cooled in time (such as the steel plates of the equipment anchor bolts and the supports of the air springs 5 and the electrical conduit pipes), to avoid adding equipment anchor bolts and various electrical conduit pipes later, and to avoid causing secondary damage to the concrete structure platform formed by one-time pouring.

[0036] Preferably, a 20-mm steel plate is laid at the bottom of the T-shaped test platform 1 as a steel form 6 to separate the row of shear walls 2 below and strengthen the flexural rigidity of the T-shaped test platform 1. The steel plate at its bottom shall not be removed after the concrete is poured.

[0037] Preferably, the T-shaped test platform 1 shall be constructed according to the mass concrete construction technology, with one-time pouring and forming, and good concrete curing shall be done later.

[0038] Preferably, the dimensions of the two sides perpendicular to each other in the cross-section of the upper connecting beam 3, the lower connecting beam 4, and the row of shear walls 2 are not less than 500 mm × 300 mm.

[0039] Preferably, the total thickness of the T-shaped test platform 1 is not less than 900 mm, the thickness of the T-shaped upper structure of the T-shaped test platform 1 is not less than 500 mm, and the lower part of the T-shaped test platform 1 has a protruding part with a length not less than 400 mm.

[0040] Preferably, a spacing of not less than 160 mm is reserved between the row of shear walls 2 and the fulcrum of the T-shaped test platform 1 for embedding and installing the air springs 5. And the cross-sectional dimension of the support of the air spring 5 (the locally protruding part of the shear wall) is not less than 920 mm × 700 mm.

[0041] Preferably, the T-shaped test platform 1, the row of shear walls 2, the upper connecting beam 3, the lower connecting beam 4 all adopt reinforced concrete structures, and the concrete strength grade shall not be less than C30, and the steel bars are all HRB400.

[0042] Through the above description and the optimization of the structural parameters of the T-shaped test platform 1, the row of shear walls 2, the upper connecting beam 3, the lower connecting beam 4, the air springs 5, the steel form 6, the rectangular culvert 7, etc., practice has proved that this utility model enables the vibration of the anti-microvibration test platform in the vertical direction caused by external environmental interference during scientific research experiments and process production to still be controlled within the range of 1 - 80 Hz, and the effective value of the amplitude in the one-third octave band is not greater than 6.25 μm / s, meeting the standards for scientific research project R & D tests under the condition of being interfered by the outside world.

[0043] The present utility model provides a successful real case of a foundation with dimensions of 22m × 8m × 2400mm. Using the original foundation pit raft (500mm) of the original factory building and original equipment as the foundation, without carrying out destructive transformation on the foundation pit raft, effectively transforming the anti-microvibration foundation T-shaped test platform and achieving the expected effect, saving construction costs.

[0044] The present utility model is not limited to various modifications and variations made by those skilled in the art of engineering in new (re)construction, expansion and unit technical measures and technical transformation without departing from the intention and scope of the present utility model. If the modifications and variations of the present utility model made by those skilled in the art of engineering fall within the scope of the claims of the present utility model and its equivalent technologies, the present utility model also intends to include these modifications and variations.

Claims

1. A test foundation platform for anti-microvibration assembly of super-large volume concrete, characterized in that It includes a T-shaped test platform at the upper part, air springs, and row-connected shear walls at the lower part; the air springs are arranged between the T-shaped test platform and the row-connected shear walls, so that the T-shaped test platform is isolated from the row-connected shear walls during operation; the row-connected shear walls include upper connecting beams, lower connecting beams, cross walls Q1 and cross walls Q2. The upper connecting beams and the lower connecting beams are arranged in 2 parallel rows, and the cross walls Q1 and the cross walls Q2 are arranged in 10 parallel seats in total; it also includes a raft slab at the bottom of the foundation. The row-connected shear walls are placed on the cushion of the raft slab at the bottom of the foundation and are cast together with it; upper connecting beams and lower connecting beams made of concrete are respectively arranged above and below the cross walls Q1 and the cross walls Q2; the upper connecting beams, the lower connecting beams, the cross walls Q1 and the cross walls Q2 are cast together at the same time; the T-shaped test platform and the row-connected shear walls are physically separated by steel formwork, and the steel formwork is used to isolate the T-shaped test platform and the row-connected shear walls in the non-operating state at ordinary times; the space distances formed between the cross walls Q1 and the cross walls Q2 and between the cross walls Q2 and the cross walls Q2 are used as rectangular culverts for equipment maintenance and repair.

2. The super-large volume concrete anti-microvibration assembly test foundation platform according to claim 1, characterized in that, The size of the T-shaped test platform is 20 meters × 8 meters.

3. An ultra-large volume concrete anti-microvibration assembly test foundation platform according to claim 1, characterized in that, The distance between two air springs is 2133.5 mm.

4. The super-large volume concrete anti-microvibration assembly test foundation platform according to claim 1, characterized in that The distance between the walls of multiple cross walls Q1 and cross walls Q2 is not less than 1100 mm; the center distance between adjacent rectangular culverts is 1100 mm; the wall thickness of the cross walls Q1 and the cross walls Q2 is 900 mm - 1100 mm, and the length is 8000 mm.

5. An ultra-large volume concrete anti-microvibration assembly test foundation platform according to claim 1, characterized in that, The distance between the upper connecting beam and the lower connecting beam is 1100 mm; the height of the T-shaped test platform from the ground is between 1800 mm and 2000 mm.

6. A super-large volume concrete anti-microvibration assembly test foundation platform according to claim 1, characterized in that, The upper T-shaped test platform and the lower cross walls Q1 and cross walls Q2 are both made of reinforced concrete structure, and the strength grade is not lower than C30.

7. An anti-microvibration assembly test foundation platform for super-large volume concrete, characterized in that, A 20-mm steel plate is laid at the bottom of the T-shaped test platform as the steel formwork to separate the row-connected shear walls at the lower part. After the concrete is poured, the steel plate shall not be removed.

8. The super-large-volume concrete anti-microvibration assembled test foundation platform according to claim 1, wherein, The sizes of the two mutually perpendicular sides on the cross section of the upper connecting beam, the lower connecting beam and the row-connected shear walls are not less than 500 mm × 300 mm.

9. An ultra-large volume concrete anti-microvibration assembly test foundation platform according to claim 1, characterized in that, The total thickness size of the T-shaped test platform is not less than 900 mm, the platform length is not less than 500 mm, and the lower part of the T-shaped test platform has a protruding part with a length of not less than 400 mm.

10. A super-large volume concrete anti-microvibration assembly test foundation platform according to claim 1, characterized in that, A spacing of not less than 160 mm is reserved between the fulcrums of the row-connected shear walls and the T-shaped test platform for installing air springs, and the cross section of the support of the air springs is not less than 920 mm × 700 mm.

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