Water-crossing structure for high-precision instrument plant

Abstract

The invention discloses a water-crossing structure for a high-precision instrument plant. The water-crossing structure comprises a water-crossing box culvert structure arranged at the bottom of the plant and located in a water-crossing main groove area; the high-pile frame structures are arranged on the two sides of the water passing tank culvert structure and located in a water-crossing non-main-groove area, and the soil body protection structures are arranged outside the high-pile frame structures and used for controlling micro-deformation and micro-vibration of the high-pile frame structures. The water-crossing high-precision instrument plant foundation micro-vibration control method has the beneficial effects that an improved water-crossing tank culvert structure is adopted in the water-crossing main groove area, a high pile frame and a soil body protection structure are adopted in the water-crossing non-main groove area, and water-crossing high-precision instrument plant foundation micro-vibration control can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy and hydropower engineering, and in particular to a water-spanning structure used in a high-precision instrument factory. Background Art

[0002] Currently, the commonly used methods of crossing water for structures are mostly bridge solutions, mainly including light pile foundation pier bridges, heavy pier wall bridges, high pile frame bridges, soil protection + tunnel (culvert) solutions, etc., which only meet general functional requirements such as flow and passage, and have no ability to control micro-vibration and micro-deformation.

[0003] With the development of high-tech manufacturing and precision equipment technology, high-standard factories have emerged. Given that the high-precision equipment and instruments in the factory have extremely high requirements for precision, gradually reaching nano-level control, the micro-vibration and micro-deformation control requirements for the foundation floor of the high-precision instrument factory across the water are becoming more and more stringent, far higher than the deformation requirements of traditional industrial buildings.

[0004] At present, high-tech factories are mostly built in urban development zones, and are often inevitably affected by environmental vibration, temperature changes, waves and wind loads, such as: vibrations caused by high-speed rail, subways, roads, cars, trucks, airplanes, etc.; micro-deformations caused by temperature changes in four seasons; vibrations and deformations caused by different wind loads and wave loads on the structure, etc. Practice has shown that a large amount of environmental vibration energy is transmitted to precision equipment and instruments through the structural foundation, thereby affecting the processing accuracy of precision equipment and instruments.

[0005] The high-precision instrument factory building across water has the characteristics of large span, high suspension, low structural damping, etc. The stress conditions are relatively complex, and it is more sensitive to vibration. The micro-vibration control of the foundation base plate is difficult. Currently, conventional water-spanning structures cannot meet the requirements of high-precision instrument factories for micro-vibration control.

[0006] Therefore, the applicant has developed a water-spanning structure suitable for a high-precision instrument factory, so as to meet the micro-vibration control requirements of the upper precision equipment and instruments. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a water-spanning structure for a high-precision instrument plant in view of the above-mentioned deficiencies and defects of the prior art to solve the above-mentioned problems.

[0008] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0009] A water-spanning structure for a high-precision instrument plant, characterized by comprising:

[0010] A water box culvert structure located at the bottom of the powerhouse and across the main water channel area;

[0011] A high pile frame structure is arranged on both sides of the water culvert structure and is located in the non-main channel area across the water, and

[0012] A soil protection structure is arranged outside the high pile frame structure and is used to control the micro deformation and micro vibration of the high pile frame structure.

[0013] In a preferred embodiment of the present invention, a layer of three felts and four oils is provided between the plant floor at the bottom of the plant and the water culvert structure.

[0014] In a preferred embodiment of the present invention, the water culvert structure includes a culvert top plate and a culvert bottom plate, and a middle pier and side piers arranged between the culvert top plate and the culvert bottom plate, and the interiors of the middle pier and the side piers adopt a cavity structure.

[0015] In a preferred embodiment of the present invention, the middle pier includes a middle pier inner wall, a middle pier outer wall and a middle pier backfill material filled between the middle pier inner wall and the middle pier outer wall, and the middle pier inner wall and the middle pier outer wall are both connected to the box culvert top plate and the box culvert bottom plate.

[0016] In a preferred embodiment of the present invention, the side pier includes an inner wall and an outer wall of the side pier and a side pier backfill material filled between the inner wall and the outer wall of the side pier, and the inner wall and the outer wall of the side pier are both connected to the top plate and the bottom plate of the box culvert.

[0017] In a preferred embodiment of the present invention, a plurality of pile foundations are provided at the bottom of the box culvert bottom plate.

[0018] In a preferred embodiment of the present invention, the high pile frame structure includes a plurality of floor pile foundations spaced apart at the bottom of the workshop floor.

[0019] In a preferred embodiment of the present invention, the soil protection structure is a backfill soil body arranged outside the high pile frame structure.

[0020] Due to the adoption of the above technical scheme, the beneficial effect of the present invention is that the present invention can realize the micro-vibration control of the foundation of the cross-water high-precision instrument factory by adopting an improved water-passing box culvert structure in the cross-water main channel area and adopting a high pile frame and a soil protection structure in the cross-water non-main channel area. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is the partition diagram of the present invention.

[0023] Figure 2 It is a plan view of the water box culvert structure of the present invention.

[0024] Figure 3 It is a cross-sectional view of the water box culvert structure of the present invention.

[0025] Figure 4 It is a cross-sectional view of the high pile frame structure and the soil protection structure of the present invention. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0027] See also Figures 1 to 4 The water-spanning structure shown is used for a high-precision instrument factory, and includes a water-passing culvert structure 100 , a high-pile frame structure 200 , and a soil protection structure 300 .

[0028] The water-passing box culvert structure 100 is arranged at the bottom of the powerhouse 1 and is located in the main water channel area. The water-passing box culvert structure includes a box culvert top plate 110 and a box culvert bottom plate 120, and a middle pier 130 and a side pier 140 arranged between the box culvert top plate 110 and the box culvert bottom plate 120. The inside of the middle pier 130 and the side pier 140 adopts a cavity structure. The water-passing box culvert structure 100 in this embodiment takes a two-hole box culvert as an example, with two side piers and one middle pier. The number of box culvert holes can be increased or decreased during actual use.

[0029] The high pile frame structure 200 is arranged on both sides of the water culvert structure 100 and is located in the non-main channel area across the water. The high pile frame structure 200 in this embodiment includes a plurality of bottom plate pile foundations 210 arranged at intervals at the bottom of the plant floor 2.

[0030] The soil protection structure 300 is arranged outside the high pile frame structure 200 and is used to control the micro deformation and micro vibration of the high pile frame structure 200. The soil protection structure 300 in this embodiment is preferably a backfill soil arranged outside the high pile frame structure 200. The backfill soil can reduce the high-order natural frequency of the bottom plate pile foundation system and avoid the risk of resonance with the site by performing soil protection on the bottom plate pile foundation 210 of the factory floor 2; at the same time, due to the heat preservation effect of the backfill soil, the micro deformation caused by temperature change can be effectively controlled.

[0031] In order to further isolate the vibration transmission between the box culvert and the upper high-precision instrument factory building and avoid interference of the external environment on precision equipment and instruments, a layer of three felt and four oils (not shown in the figure) is arranged between the factory floor 2 at the bottom of the factory building 1 and the water-passing box culvert structure 100. In this embodiment, a layer of three felt and four oils is arranged between the box culvert top plate 110 and the factory floor 2 of the cross-water high-precision instrument as vibration isolation to block low-frequency vibrations.

[0032] The middle pier 130 includes a middle pier inner wall 131, a middle pier outer wall 132, and a middle pier backfill material 133 filled between the middle pier inner wall 131 and the middle pier outer wall 132, and the middle pier inner wall 131 and the middle pier outer wall 132 are both connected to the box culvert top plate 110 and the box culvert bottom plate 120. Similarly, the side pier 140 includes a side pier inner wall 141 and a side pier outer wall 142, and a side pier backfill material 143 filled between the side pier inner wall 141 and the side pier outer wall 142, and the side pier inner wall 141 and the side pier outer wall 142 are both connected to the box culvert top plate 110 and the box culvert bottom plate 120. The backfill material in this embodiment is preferably selected from materials with small thermal conductivity and large specific heat capacity, which can reduce the micro deformation of the box culvert caused by temperature changes. In addition, by increasing or decreasing the amount of internal backfill material, the weight of the water-passing box culvert can be changed, thereby changing its natural frequency, so that the box culvert natural frequency avoids the natural frequency section of the site and avoids resonance. In addition, since the middle pier 130 and the side pier 140 are filled with backfill materials, the backfill materials will generate a certain reaction force on the outer wall of the middle pier and the outer wall of the side pier, thereby improving the stress state of the outer wall.

[0033] A plurality of pile foundations 121 are arranged at the bottom of the box culvert bottom plate 120. The box culvert bottom plate 120 in this embodiment is provided with pile foundations 121 according to the bearing capacity of the foundation, and a natural foundation may also be used if the foundation conditions are good.

[0034] The principle of the present invention is as follows:

[0035] When the frequency of environmental vibration (such as vibration caused by high-speed rail, subway, highway, etc.) is close to the natural frequency of the lower foundation of the cross-water high-precision instrument factory, the lower foundation will produce greater vibration due to resonance, thereby affecting the operation of the upper precision equipment and instruments. Therefore, to avoid resonance, it is necessary to adjust the natural frequency of the lower foundation of the factory building so that its natural frequency avoids the natural frequency segment of the site. The natural frequency of the structure is closely related to its height, weight, and stiffness. Generally speaking, the higher the height, the lower the natural frequency of the structure; the greater the stiffness, the higher the natural frequency of the structure; increasing the weight can reduce the natural frequency of the structure. Due to the need for flow, the height of the cross-water structure has little room for change. Therefore, the self-weight and stiffness of the lower foundation of the cross-water factory are changed by the present invention, thereby changing the natural frequency of the structure so that its natural frequency avoids the natural frequency segment of the site, thereby achieving micro-vibration control.

[0036] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A water-spanning structure for a high-precision instrument plant, characterized in that: include: A water box culvert structure located at the bottom of the powerhouse and across the main water channel area; A high pile frame structure is arranged on both sides of the water culvert structure and is located in the non-main channel area across the water, and A soil protection structure is arranged outside the high pile frame structure and is used to control the micro deformation and micro vibration of the high pile frame structure.

2. A water-spanning structure for a high-precision instrument factory building according to claim 1, characterized in that: A layer of three felts and four oils is arranged between the plant floor at the bottom of the plant and the water culvert structure.

3. The water-spanning structure for a high-precision instrument factory building according to claim 1, characterized in that: The water-passing box culvert structure comprises a box culvert top plate, a box culvert bottom plate, and a middle pier and side piers arranged between the box culvert top plate and the box culvert bottom plate. The insides of the middle pier and the side pier adopt a cavity structure.

4. A water-spanning structure for a high-precision instrument factory building according to claim 3, characterized in that: The middle pier comprises a middle pier inner wall, a middle pier outer wall and a middle pier backfill material filled between the middle pier inner wall and the middle pier outer wall. The middle pier inner wall and the middle pier outer wall are both connected to the box culvert top plate and the box culvert bottom plate.

5. The water-spanning structure for a high-precision instrument factory building according to claim 3 is characterized in that: The side pier comprises a side pier inner wall and a side pier outer wall and a side pier backfill material filled between the side pier inner wall and the side pier outer wall. The side pier inner wall and the side pier outer wall are both connected to the box culvert top plate and the box culvert bottom plate.

6. The water-spanning structure for a high-precision instrument factory building according to claim 3, characterized in that: A plurality of pile foundations are arranged at the bottom of the box culvert bottom plate.

7. The water-spanning structure for a high-precision instrument factory building according to claim 2, characterized in that: The high pile frame structure includes a plurality of bottom plate pile foundations which are arranged at intervals at the bottom of the workshop bottom plate.

8. The water-spanning structure for a high-precision instrument factory building according to claim 1, characterized in that: The soil protection structure is a backfill soil body arranged outside the high pile frame structure.

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