CN111287223A - Shock isolation system and method - Google Patents

Abstract

The invention discloses a shock-absorbing and isolating system and method. The shock-absorbing and isolating system comprises a liquid pumping device and a cavity set on the foundation, wherein the cavity is filled with a pebble layer, and the cavity is kept in The liquid pumping device is used for injecting or pumping liquid into the cavity, and the pebble layer is used as the foundation of the building structure. The shock absorption system can change the quality of the pebble layer by pumping liquid into the pebble layer in the cavity, realize the adjustment of the inertial force of the pebble layer and the adjustment of the natural vibration frequency, change the inertia of the pebble layer without changing the bearing performance of the pebble layer basically , make the pebble particles interact with the liquid between the particles, play a resonance effect through the movement of the pebble layer and dissipate the frictional energy of the liquid sloshing, reduce the vibration response of the building structure, greatly improve the shock absorption and energy consumption efficiency of the system, and effectively reduce earthquake disasters; The seismic system has pioneering engineering significance and practical value.

Description

Shock isolation system and method

technical field

The invention relates to the field of construction engineering, in particular to a shock-absorbing and isolating system and method.

Background technique

With the expansion of urban construction, the need to deal with complex geological engineering environments is becoming more and more urgent. The superstructures built on complex foundation conditions face the problem of insufficient seismic performance. How to improve the seismic performance of superstructures under seismic excitation is more and more important. Therefore, by improving the engineering characteristics of complex foundations, the overall stiffness and damping of the foundations are in a favorable state, so as to achieve the effect of energy dissipation and shock absorption, which has become an economical and effective means. The ground vibration isolation technology that can absorb shock has broad prospects in engineering.

For the ground vibration isolation technology, it can be divided into shock absorption control and vibration isolation control from the control theory. Structural vibration response is minimized; isolation control protects the structure from vibration by adding isolation bearings between the foundation and the superstructure.

Conventional foundation seismic isolation technology only requires the bearing capacity of the foundation, so the common foundation treatment methods are achieved by strengthening the foundation strategy. Problems, the most used means are to set tuned mass dampers on the roof, tuned liquid dampers or set viscous dampers between the foundation and the upper building structure, etc. The dampers of such metal structures are mainly added in the structure. Three basic mechanical elements such as mass, damping and spring are used to achieve the purpose of changing the dynamic characteristics of the structure and reducing the dynamic response of the structure; the metal damper has problems such as high material cost, concentrated yield point and limited shock absorption capacity.

SUMMARY OF THE INVENTION

The purpose of the present invention is: in view of the conventional foundation seismic isolation technology existing in the prior art, the foundation only requires the bearing capacity, so the common foundation treatment methods are all achieved by strengthening the foundation strategy, and the seismic isolation measures are all improved by improving the upper part of the foundation. However, the metal damper used in the seismic reduction and isolation measures has the problems of high material cost, concentrated yield point of the metal damper, and limited shock absorption capacity.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A shock-absorbing and isolating system includes a liquid pumping device and a cavity set on the foundation, the cavity is filled with a pebble layer, and the liquid is kept in the cavity, and the liquid pumping device is used for injecting Liquid is injected or pumped into the cavity, and the pebble layer is used as the foundation of the building structure.

Pebble exists widely in nature, and the geological conditions of the pebble stratum are often encountered in the construction process of the actual project. The pebble stratum itself has excellent engineering properties such as good compaction performance, strong water permeability, high shear strength, and not easy to liquefy under earthquake loads. For the study of natural pebble strata, researchers mostly focus on examining the bearing capacity of pebble strata or the construction method of pebble strata reinforcement, and how to improve the engineering characteristics of pebble strata to make pebble strata have better seismic isolation performance. .

According to the experience of the tuned liquid dampers arranged on the top of the structure, the displacement amplitude of the building structure under the action of earthquake excitation decreases with the increase of the water volume inside the damper, which leads to the need to deploy too many tuned liquid dampers in the floor shock absorption system. It brings problems such as high construction cost and large space occupation.

The pebble stratum usually contains a certain amount of water. The pebble layer and liquid are filled in the cavity of a container to form the geological conditions of the pebble stratum in nature. The impact of the liquid sloshing damping in the layer on the vibration control effect is more significant, so it is feasible to transform the water volume of the pebble layer in the cavity to achieve the effect of ground vibration isolation. However, how to effectively improve the liquid sloshing damping of the pebble layer in the cavity still needs to be studied. question. The research shows that when the sloshing frequency of the water body in the tuned liquid damper is close to or slightly smaller than the natural vibration frequency of the building structure, the damping control effect of the tuned liquid damper system is optimal. The sloshing frequency of the liquid is positively correlated with the liquid density, and the liquid density is also positively correlated with the sloshing damping. Therefore, the required liquid sloshing frequency and damping can be obtained by changing the density of a certain volume of liquid.

By controlling the liquid content of the pebble layer in the cavity, the quality of the entire pebble layer can be changed, and the liquid sloshing damping can be amplified at the same time. Using the pebble layer as a frequency-modulated liquid damper device can reduce the overall displacement amplitude of the building structure. When the first natural frequency of the pebble layer is similar to the first natural frequency of the building structure, the seismic isolation system of the pebble layer in the cavity will play a better control role.

Therefore, compared with the traditional shock absorption system, the shock absorption system of the present invention has the following advantages: on the one hand, the pebble layer is used, which has good bearing performance, large pores between the pebble, and large water storage capacity; In a certain cavity, the pebble layer is pumped with liquid to change the quality of the pebble layer (the quality of the pebble layer includes the mass of soil and stone and the quality of the liquid), so as to realize the adjustment of the inertial force of the pebble layer and the adjustment of the natural vibration frequency, and change the inertia of the pebble layer. At the same time, the load-bearing performance of the pebble layer is basically not changed, so that the pebble particles interact with the liquid between the particles, and the movement of the pebble layer plays a resonance effect and the liquid sloshing friction energy dissipation, reducing the vibration response of the building structure and greatly improving the system's shock absorption and energy consumption efficiency. , effectively reduce earthquake disasters; the seismic isolation system has pioneering engineering significance and practical value.

Preferably, the cavity wall is a concrete wall or a reinforced concrete wall.

Preferably, the cavity is filled with a soft clay layer, and the soft clay layer is located on top of the pebble layer.

Preferably, the pebble layer includes coarse gravel particles and fine sand particles, wherein the coarse gravel particles serve as the main load-bearing carrier of the pebble layer to ensure the strength requirements of the pebble layer.

Further preferably, the particle size of the coarse gravel particles is 6cm-20cm.

With this structural arrangement, the coarse gravel particles with a particle size of 6cm-20cm meet the shear strength and stiffness requirements of the shock-absorbing and isolating system.

Further preferably, the particle size of the fine sand particles is 0.075cm-6cm.

Preferably, the infusion device comprises:

Liquid storage unit for storing spare liquid;

A power pump, connecting the liquid storage unit and the pebble layer, the power pump is used for injecting the backup liquid into the pebble layer to become pore liquid, or for pumping the pore liquid into the storage liquid unit.

Through the liquid pumping device, it is ensured that the water level of the cavity in the cavity is kept within a certain range, the foundation settlement caused by the drop of the groundwater level is avoided, the slurry content of the pebble layer can be dynamically controlled, and the problem of complex formation conditions is solved. The technical problem of poor seismic performance of the building structure under earthquake excitation, the method is easy to operate, has high economic efficiency, and has good energy dissipation and shock absorption effect, which can ensure that the pebble layer meets the expected energy dissipation and shock absorption requirements under earthquake excitation, The earthquake disaster degree of the building structure is effectively reduced.

Further preferably, the power pump is a bidirectional pump, and the bidirectional pump can be used for liquid injection and pumping;

Alternatively, the power pump is two one-way pumps, one of the one-way pumps is used for liquid injection, and the other one-way pump is used for liquid extraction.

Further preferably, the shock-absorbing and isolating system includes a plurality of the power pumps, and the power pumps are arranged in parallel and/or in series, so as to improve the pump fluid delivery efficiency.

Further preferably, the power pump and the liquid storage unit are communicated through a pipeline, and the power pump and the pebble layer are communicated through the pipeline.

Further preferably, a control valve is provided on the pipeline between the power pump and the liquid storage unit to open and close the communication between the power pump and the liquid storage unit.

Further preferably, the shock isolation system further comprises a pipeline well, and the pipeline well penetrates into the pebble layer.

Further preferably, the bottom of the pipeline well is lower than the water level of the inner cavity of the cavity.

Further preferably, the bottom hole of the pipeline well is located from the middle position to the bottom position in the depth direction of the pebble layer.

Further preferably, the pipeline well is a borehole well.

Further preferably, a well pipe is provided in the pipeline well, and the top of the well pipe is connected to the power pump.

Further preferably, the bottom end of the well pipe is lower than the water level of the cavity.

Further preferably, a plurality of seepage holes are provided on the wall of the well pipe.

Further preferably, the water seepage hole is a round hole or a square hole.

Further preferably, the well pipe is a steel well pipe.

Further preferably, the pipe shoe of the pipeline well and the steel well pipe are bolted or welded.

The construction method of the drilling well is as follows: under the action of the gravity impactor, the hydraulic center drilling tool realizes the impact drilling, and the reaming drilling tool with expansion and contraction functions is used to ream the well wall to form the pipeline well, so the pipeline well is formed. The outer side of the reaming drill is provided with a tube shoe, and the top of the tube shoe and the well pipe are fixed by bolting or welding. During the percussion drilling process, the reaming drill and the hydraulic center drill are The well wall formed by the tube shoe and the well tube sinks under the action of gravity. When the drilling depth reaches the design position (the middle position) in the pebble layer, the drill bit of the reaming drill is retracted, and the reaming drill bit is closed. The hole drilling tool, the hydraulic center drilling tool and the down-the-hole impactor propose that the pipeline well is formed into a well, and the above steps are repeated to realize the pipeline well array.

Further preferably, the liquid storage unit includes at least one liquid storage tank.

Further preferably, the standby liquid is water, polyester polyol liquid or polyhydric halide liquid.

Preferably, the shock-absorbing and isolating system further includes a control device, the control device is connected to the liquid pumping device, and the control device is used to control the liquid pumping device to inject or pump liquid into the cavity, to control the quality of the pebble layer.

Further preferably, the control device includes a computer.

Preferably, the seismic isolation system further includes a data monitoring device, the data monitoring device is connected to the control device, and the data monitoring device is used for monitoring the displacement of the building structure under the action of earthquake excitation and for monitoring the pebbles the quality of the layer and transmit the displacement and the quality data to the control device.

Through the control device and the data monitoring device, the data monitoring device can monitor the shock absorption effect of the pebble layer on the building structure under the action of earthquake excitation in real time, and feed back data to the control device in real time. The control device controls the liquid pumping device to inject or pump liquid into the cavity according to the shock absorption effect, and dynamically corrects the quality of the pebble layer to obtain the best shock absorption performance.

Further preferably, the data monitoring device includes an acceleration sensor, the acceleration sensor is provided on the building structure, and the acceleration sensor is used to obtain the displacement amplitude of the top layer and/or the inter-story displacement of the building structure to monitor the building. Displacement of a structure under seismic excitation.

Further preferably, at least one acceleration sensor is provided on each floor.

Further preferably, the data monitoring device includes a liquid density sensor, and the liquid density sensor is arranged in the pebble layer.

Since the volume of the pebble layer is constant, increasing the liquid density in the pebble layer can increase the quality of the liquid, thereby increasing the quality of the pebble layer. Therefore, the liquid density in the pebble layer can be monitored indirectly by the liquid density sensor. The quality of the pebble layer.

Further preferably, the liquid density sensor is connected to the outer wall of the well pipe.

Further preferably, the data monitoring device includes a liquid pressure sensor, and the liquid pressure sensor is arranged in the pebble layer.

Since the volume of the pebble layer is constant, by increasing the volume of pore liquid between the coarse gravel particles in the pebble layer, the quality of the liquid can be increased, thereby increasing the quality of the pebble layer. The water pressure in the pebble layer indirectly calculates the water level of the cavity to obtain the quality of the pebble layer.

Further preferably, the liquid pressure sensor is arranged at the bottom of the pipeline well.

The present invention also provides a construction method for the shock-absorbing and isolating system, comprising the following steps:

Dig a pit on the foundation, and waterproof the surface of the pit to form a cavity;

A pebble layer is filled in the cavity, and the pebble layer is used as the foundation of the building structure;

A well pipe is arranged in the cavity, the well pipe goes deep into the pebble layer, the top of the well pipe is connected to a pipeline, and the pipeline is connected to a liquid storage unit, and the liquid storage unit stores a backup liquid.

The construction method of the shock-absorbing and isolating system of the present invention utilizes the characteristics of pebbles, and the existing conventional technical means can be adopted for digging and waterproofing, which is convenient for construction and low in cost, and is suitable for different foundation conditions.

Preferably, the foundation is reinforced after the pit is dug.

Preferably, the pipeline is connected to a power pump, the power pump is connected to the liquid storage unit, and the power pump is used for injecting the backup liquid into the pebble layer, or for injecting pore liquid in the pebble layer Draw into the reservoir.

Further preferably, the construction method also comprises the following steps:

The power pump is connected to a control device, the control device is connected to a data monitoring device, and the data monitoring device includes an acceleration sensor, a liquid density sensor and a liquid pressure sensor;

The acceleration sensor is arranged on the building structure, and the liquid density sensor and the liquid pressure sensor are arranged in the pebble layer.

Preferably, a pipeline well is constructed in the cavity, and the well pipe is located in the pipeline well.

The present invention also provides a method for realizing the shock-absorbing and isolating system according to any one of the above,

obtaining the natural vibration period and/or the natural vibration frequency of the building structure;

obtaining the natural vibration period and/or the natural vibration frequency of the pebble layer in the cavity;

The liquid pumping device injects or draws liquid into the cavity, thereby changing the quality of the pebble layer, thereby changing the natural vibration period and/or the natural vibration frequency of the pebble layer, so that the pebble layer is The floor natural frequency reaches [0.8, 1.2] of the building structure natural frequency.

By adopting the realization method of the shock-absorbing and isolating system according to the present invention, the natural vibration frequency of the pebble layer can be made close to the natural vibration frequency of the building structure, so that the pebble layer in the cavity with a certain volume can be simulated as a An oversized tuned liquid damper for optimum shock control.

Preferably, according to the natural vibration period and/or the natural frequency of the building structure and the natural vibration period and/or the natural frequency of the pebble layer, the natural vibration period and/or the natural vibration period of the building structure and the pebble layer are obtained. The difference between the natural frequencies;

According to the difference value, it is determined that the liquid pumping device injects or draws liquid into the pebble layer.

Preferably, a numerical model of the building structure is established, and modal analysis is performed to obtain the natural vibration period and/or the natural vibration frequency of the building structure.

Preferably, a numerical model of the pebble layer in the cavity is established, and modal analysis is performed to obtain the natural vibration period and/or the natural vibration frequency of the pebble layer.

Preferably, after the natural vibration frequency of the pebble layer reaches [0.8, 1.2] of the natural vibration frequency of the building structure, under the action of earthquake excitation, by monitoring the data of the displacement amplitude and/or the displacement of the top layer of the building structure index, to determine whether the pebble layer after the quality change has a shock absorption effect;

If the shock absorption effect is not as expected, dynamic correction of the quality of the pebble layer is performed according to the data index.

The present invention also provides an electronic device, comprising:

a memory on which a computer program is stored;

A processor, configured to execute the program in the memory, so as to implement the method for implementing the shock isolation system according to any one of the above.

The present invention also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the method for implementing the vibration reduction and isolation system as described in any of the above.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present invention are:

1. The shock absorption system of the present invention has the following advantages: on the one hand, the pebble layer is used, and its bearing performance is good, the pores between the pebble are large, and the water storage capacity is large; The injection of liquid changes the quality of the pebble layer, realizes the adjustment of the inertial force of the pebble layer and the adjustment of the natural vibration frequency, changes the inertia of the pebble layer without changing the bearing performance of the pebble layer basically, and makes the pebble particles interact with the liquid between particles, through the pebble layer. The movement exerts the resonance effect and the liquid sloshing friction energy dissipation, reduces the vibration response of the building structure, greatly improves the system's shock absorption and energy consumption efficiency, and effectively reduces the earthquake disaster; the shock isolation system has pioneering engineering significance and practical value;

2. The shock absorption system of the present invention, through the liquid pumping device, ensures that the water level in the cavity is kept within a certain range, avoids the foundation subsidence caused by the decline of the groundwater level, and can dynamically control the The slurry content of the pebble layer solves the technical problem of poor seismic performance of the building structure under seismic excitation under complex stratum conditions. Under earthquake excitation, it can meet the expected energy dissipation and shock absorption requirements, and effectively reduce the earthquake disaster degree of the building structure;

3. The shock absorption system of the present invention, through the control device and the data monitoring device, the data monitoring device can monitor the shock absorption effect of the pebble layer on the building structure under the action of earthquake excitation in real time, and Real-time feedback data to the control device, the control device controls the liquid pumping device to inject or pump liquid into the cavity according to the shock absorption effect, and dynamically corrects the quality of the pebble layer to obtain the best reduction. shock performance;

4. The construction method of a shock-absorbing and isolating system according to the present invention utilizes the characteristics of pebbles, and the existing conventional technical means can be used for digging and waterproofing, which is convenient for construction and low in cost, and is suitable for different foundation conditions;

5. The realization method of a shock isolation system according to the present invention can make the natural vibration frequency of the pebble layer close to the natural vibration frequency of the building structure, so as to simulate the pebble layer in the cavity with a certain volume. into an oversized tuned liquid damper for optimal damping control.

Description of drawings

Fig. 1 is the structural schematic diagram of the cavity of the present invention;

Fig. 2 is the arrangement schematic diagram of the pebble layer of the present invention;

Fig. 3 is the structural schematic diagram of the shock-absorbing and isolating system of the present invention;

Fig. 4 is the control schematic diagram of the shock-absorbing and isolating system of the present invention;

Figure 5 is a comparison diagram (peak acceleration) of the shock absorption effect of the pebble formation under different liquid levels;

FIG. 6 is a comparison diagram (displacement) of the shock absorption effect of the pebble formation under different liquid levels.

Icons: 01-foundation, 1-cavity, 2-pebble layer, 3-soft clay layer, 4-coarse gravel, 5-fine sand, 6-pore liquid, 7-flow direction, 8-pipeline, 9 -Pipeline well, 10-well tube, 11-water level in volume chamber, 12-power pump, 13-liquid pressure sensor, 14-liquid density sensor, 15-acceleration sensor, 16-liquid storage unit, 17-standby liquid, 18 - Control valve, 19 - Control device, 20 - Building structure.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention 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 invention, but not to limit the present invention.

Example 1

As shown in Figures 1-4, a shock isolation system according to the present invention includes a cavity 1 set on a foundation 01, a pipeline well 9, a pumping and injection device, a control device 19 and a data monitoring device , liquid is kept in the cavity 1 .

The wall of the cavity 1 is a concrete wall or a reinforced concrete wall. The cavity 1 is filled with a pebble layer 2 and a soft clay layer 3 , and the soft clay layer 3 is located on the top of the pebble layer 2 .

The pebble layer 2 is used as the foundation of the building structure 20, and the pebble layer 2 includes coarse gravel particles 4 and fine sand particles 5, wherein the coarse gravel particles 4 serve as the main load-bearing carrier of the pebble layer 2, Guarantee the strength requirements of the pebble layer 2; the particle size of the coarse gravel particles 4 is 6cm-20cm, and the particle size of the coarse pebble particles of 6cm-20cm meets the shear strength and stiffness requirements of the shock isolation system , the particle size of the fine sand particles 5 is 0.075cm-6cm.

The pipeline well 9 goes deep into the pebble layer 2 , the bottom of the pipeline well 9 is lower than the water level 11 of the inner cavity of the cavity 1 , and the bottom of the pipeline well 9 is located at the depth of the pebble layer 2 From the middle position in the direction to the bottom position, preferably the bottom of the pipeline well 9 is located in the middle position in the depth direction of the pebble layer 2; specifically, the pipeline well 9 is a borehole.

The liquid pumping device is used for injecting or pumping liquid into the cavity 1 , and the pumping liquid device includes a liquid storage unit 16 , a power pump 12 and a well pipe 10 provided in the pipeline well 9 . , the power pump 12 and the liquid storage unit 16 are communicated through the pipeline 8 , the power pump 12 and the well pipe 10 are communicated through the pipeline 8 , and the liquid storage unit 16 is used to store the backup liquid 17 , the liquid storage unit 16 may include at least one liquid storage tank, the standby liquid 17 is water, polyester polyol liquid or polyhalogen liquid, and the power pump 12 is used to inject the standby liquid 17 into the The pebble layer 2 becomes the pore liquid 6, or is used to suck the pore liquid 6 into the liquid storage unit 16, and the pipeline 8 between the power pump 12 and the liquid storage unit 16 is provided with The control valve 18 is used to open and close the communication between the power pump 12 and the liquid storage unit 16 .

The top end of the well pipe 10 is connected to the power pump 12 , the bottom end of the well pipe 10 is lower than the water level 11 of the cavity, a plurality of seepage holes are arranged on the pipe wall of the well pipe 10 , and the seepage holes are circular hole or square hole, specifically, the well pipe 10 is a steel well pipe.

As a preferred solution of this embodiment, the power pump 12 is a two-way pump, and the two-way pump can be used for liquid injection and pumping; or the power pump 12 is two one-way pumps, one of which is the one-way pump It is used for liquid injection, and the other one-way pump is used for liquid extraction.

The shock isolation system includes a plurality of the power pumps 12 , and the power pumps 12 are arranged in parallel and/or in series, so as to improve the pump fluid delivery efficiency.

The pipe shoe of the pipeline well 9 and the steel well pipe are connected or welded by bolts, and the construction method of the drilling well is that the hydraulic center drilling tool realizes the impact drilling under the action of the gravity impactor, which will have expansion and The reaming tool with shrinking function reams the well wall to form the pipeline well 9. The outer side of the reaming drill is provided with a tube shoe, and the top of the tube shoe is connected with the well pipe by bolting or welding. Fixed, during the percussion drilling process of the reaming drilling tool and the hydraulic center drilling tool, the well wall formed by the tube shoe and the well tube 10 sinks under the action of gravity, and when the drilling depth reaches the pebble layer 2 When the inner design position (middle position), the drill bit of the reaming drill is retracted, and the reaming drill, the hydraulic center drill and the down-the-hole impactor are brought out of the pipeline well 9 to complete the well, repeating The above steps realize the array of pipeline wells 9 .

Through the liquid pumping device, it is ensured that the water level 11 of the cavity 1 is kept within a certain range, the subsidence of the foundation 01 caused by the drop of the groundwater level is avoided, the slurry content of the pebble layer 2 can be dynamically controlled, and the solution to the problem is solved. The technical problem that the building structure 20 under complex stratum conditions has poor seismic performance under seismic excitation, the method is easy to operate, has high economic efficiency, and has good energy dissipation and shock absorption effects, which can ensure that the pebble layer 2 meets expectations under seismic excitation. The requirements of energy dissipation and shock absorption can effectively reduce the earthquake disaster degree of the building structure 20 .

The control device 19 includes a computer, the control device 19 is connected to the liquid infusion device, and the control device 19 is used to control the liquid infusion device to inject or extract liquid into the chamber 1 to control the liquid infusion device. The quality of the pebble layer 2.

The data monitoring device is connected to the control device 19, the data monitoring device includes an acceleration sensor 15, a liquid density sensor 14 and a liquid pressure sensor 13, and the data monitoring device is used to monitor the movement of the building structure 20 under the action of earthquake excitation. The displacement and the quality of the pebble layer 2 are monitored and the data of the displacement and the quality are transmitted to the control device 19 .

The acceleration sensor 15 is arranged on the building structure 20. For low-rise buildings, at least one acceleration sensor 15 may be arranged on each floor, and for high-rise buildings, at least one acceleration sensor may be arranged on each of at least three upper floors. 15. The acceleration can be calculated by the computer to calculate the displacement, that is, the displacement amplitude and/or the interstory displacement of the building structure 20 can be obtained through the acceleration sensor 15 to monitor the displacement of the building structure 20 under the action of earthquake excitation. .

The liquid density sensor 14 is arranged in the pebble layer 2, specifically on the outer wall of the well pipe 10; since the volume of the pebble layer 2 is constant, the quality of the liquid can be increased by increasing the liquid density in the pebble layer 2 , so as to increase the quality of the pebble layer 2, so the mass of the pebble layer 2 can be indirectly calculated by monitoring the liquid density in the pebble layer 2 through the liquid density sensor 14; The volume of the liquid, the volume and density of the pebble layer 2 that have been previously controlled can be used to calculate the mass of the entire pebble layer 2 .

The liquid pressure sensor 13 is arranged in the pebble layer 2 , specifically at the bottom of the pipeline well 9 ; since the pebble layer 2 has a certain volume, the pores between the coarse particles of the pebble layer 2 are increased by increasing the volume of the pebble layer 2 . The volume of the liquid 6 can increase the quality of the liquid, thereby increasing the quality of the pebble layer 2. Therefore, the liquid pressure sensor 13 can monitor the water pressure in the pebble layer 2 and indirectly calculate the height of the water level 11 of the cavity to obtain the data. Describe the quality of the pebble layer 2.

Through the control device 19 and the data monitoring device, the data monitoring device can monitor the shock absorption effect of the pebble layer 2 on the building structure 20 under the action of earthquake excitation in real time, and feed back the data to the control device in real time 19. The control device 19 controls the liquid pumping device to inject or pump liquid into the cavity 1 according to the shock absorption effect, and dynamically correct the quality of the pebble layer 2 to obtain the best shock absorption performance.

Compared with the traditional shock absorption system, the shock absorption system of the present invention has the following advantages: on the one hand, the pebble layer 2 is used, which has good bearing performance, large pores between the pebble, and large water storage capacity; The pebble layer 2 in the cavity 1 is pumped with liquid to change the quality of the pebble layer 2, realize the adjustment of the inertia force of the pebble layer 2 and the adjustment of the natural frequency, change the inertia of the pebble layer 2 without changing the bearing performance of the pebble layer 2 basically, The pebble particles interact with the liquid between the particles, and through the movement of the pebble layer 2, the resonance effect and the liquid sloshing friction energy dissipation are exerted, which reduces the vibration response of the building structure, greatly improves the shock absorption and energy consumption efficiency of the system, and effectively reduces earthquake disasters; The seismic system has pioneering engineering significance and practical value.

Example 2

As shown in Figures 1-4, the construction method of a vibration reduction and isolation system according to the present invention is used to construct the vibration reduction and isolation system as described in Embodiment 1, including the following steps:

A. As shown in Figure 1, a pit is dug on the foundation 01, and the surface of the pit is waterproofed to form a cavity 1;

B. Reinforcing the foundation 01;

C. As shown in Figure 2-3, fill the cavity 1 with a pebble layer 2 and a soft clay layer 3, the soft clay layer 3 is located on the top of the pebble layer 2, and the top of the soft clay layer 3 is The top of the foundation 01 is flush, and the pebble layer 2 is used as the foundation of the building structure 20;

D. A pipeline well 9 is constructed in the cavity 1, the pipeline well 9 goes deep into the pebble layer 2, and the bottom of the pipeline well 9 is lower than the water level of the cavity in the cavity 1 11;

E. A well pipe 10 is arranged in the pipeline well 9, the bottom end of the well pipe 10 is lower than the water level 11 of the cavity, the top of the well pipe 10 is connected to the pipeline 8, and the pipeline 8 is connected to the power The pump 12, the power pump 12 is connected to the liquid storage unit 16, and the liquid storage unit 16 stores a backup liquid 17;

The power pump 12 is used for injecting the backup liquid 17 into the pebble layer 2, or for pumping the pore liquid 6 in the pebble layer 2 into the liquid storage unit 16;

F. The power pump 12 is connected to a control device 19, and the control device 19 is connected to a data monitoring device, and the data monitoring device includes an acceleration sensor 15, a liquid density sensor 14 and a liquid pressure sensor 13; the acceleration sensor 15 is provided in the On the building structure 20 , the liquid density sensor 14 and the liquid pressure sensor 13 are arranged in the pebble layer 2 .

The construction method of the shock-absorbing and isolating system of the present invention utilizes the characteristics of pebbles. Existing conventional technical means can be adopted for digging and waterproofing. The construction is convenient, the cost is low, and it is suitable for different foundation conditions.

Example 3

As shown in Figures 1-6, the implementation method of the shock-absorbing and isolating system according to any one of the above described in the present invention,

Using numerical simulation software, a numerical model of the building structure 20 is established, and a modal analysis is performed to obtain the natural vibration period and/or the natural vibration frequency of the building structure 20;

Using numerical simulation software, a numerical model of the pebble layer 2 in the cavity 1 is established, and a modal analysis is performed to obtain the natural vibration period and/or the natural vibration frequency of the pebble layer 2;

The natural vibration period and/or the natural vibration frequency of the building structure 20 and the natural vibration period and/or the natural vibration frequency of the pebble layer 2 are compared to obtain the building structure 20 and the natural vibration period of the pebble layer 2 and/or the difference in natural frequency;

The control device 19 obtains the preset quality of the pebble layer 2 according to the difference, and the control device 19 controls the power pump 12 to inject or pump liquid into the cavity 1 to adjust the pebble layer 2 of the liquid density and/or the height of the water level 11 in the cavity, the adjustment is monitored by the liquid density sensor 14 and the liquid pressure sensor 13, so that the quality of the pebble layer 2 reaches a preset value, thereby changing the pebble layer 2 The natural vibration period and/or the natural vibration frequency of the pebble layer 2 reaches [0.8, 1.2] of the natural vibration frequency of the building structure 20;

Then, under the action of earthquake excitation, the acceleration sensor 15 is used to monitor the data index of the displacement amplitude of the top layer and/or the displacement between layers of the building structure 20, and determine whether the pebble layer 2 after the quality change has a shock absorption effect;

If the shock absorption effect is not as expected, the control device 19 controls the power pump 12 to inject or pump liquid into the cavity 1 according to the data index, to perform dynamic correction of the quality of the pebble layer 2, and finally achieve Best shock absorption performance.

As shown in Figures 5 and 6, the comparison diagrams (peak acceleration and displacement) of the shock absorption effect of the pebble layer 2 under different liquid levels, using the acceleration sensor 15 to monitor the displacement data of the building structure 20, the analysis shows that the use of all After the liquid pumping device injects the liquid into the pebble layer 2, the shock absorption effect of the pebble layer 2 becomes more obvious with the passage of time, and the more liquid is injected, the more the quality of the pebble layer 2 is improved, so that the The natural vibration frequency of the pebble layer 2 is close to the natural vibration frequency of the building structure 20, and the shock absorption effect is quite obvious compared with the case of no liquid injection.

By using the method for realizing a shock-absorbing and isolating system according to the present invention, the natural vibration frequency of the pebble layer 2 can be made close to the natural vibration frequency of the building structure 20, so that the pebble in the cavity 1 with a certain volume can be separated. Layer 2 is modeled as an oversized tuned liquid damper for optimal damping control.

Example 4

An electronic device according to the present invention includes:

a memory on which a computer program is stored;

The processor is configured to execute the program in the memory, so as to implement the method for implementing a vibration reduction and isolation system as described in Embodiment 3.

As a preferred solution of this embodiment, the electronic device may include: a processor and a memory, and the electronic device may further include one or more of a multimedia component, an input/output (I/O) interface, and a communication component.

Wherein, the processor is used to control the overall operation of the electronic device, so as to complete all or part of the steps in the above-mentioned processing method or the above-mentioned display method.

The memory is used to store various types of data to support the operation of the electronic device, such data may include, for example, instructions for any application or method for operation on the electronic device, as well as application-related data; the memory may be composed of Any type of volatile or non-volatile storage device or their combined implementation, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory, EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (Read-Only Memory, ROM) , magnetic memory, flash memory, magnetic disk or optical disk.

The multimedia component can include a screen and an audio component, where the screen can be, for example, a touch screen, and the audio component is used to output and/or input audio signals; for example, the audio component can include a microphone, the microphone is used to receive external audio signals, the received audio signals may be further stored in memory or transmitted through the communication component; the audio component also includes at least one speaker for outputting the audio signal.

The I/O interface provides an interface between the processor and other interface modules, and the above-mentioned other interface modules can be keyboards, mice, buttons, etc.; these buttons can be virtual buttons or physical buttons.

Communication components are used for wired or wireless communication between the electronic device and other devices; wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G or 5G, or any of them One or a combination of several, so the corresponding communication components may include: Wi-Fi module, Bluetooth module, NFC module, and mobile phone communication module.

As a preferred solution of this embodiment, the electronic device may be configured by one or more application specific integrated circuits (Application Specific Integrated Circuit, ASIC), digital signal processors (Digital Signal Processor, DSP), digital signal processing devices (Digital Signal Processing) Device, DSPD), Programmable Logic Device (Programmable Logic Device, PLD), Field Programmable Gate Array (Field Programmable Gate Array, FPGA), controller, microcontroller, microprocessor or other electronic components are implemented to perform all A method for implementing a shock isolation system is described.

Example 5

A computer-readable storage medium according to the present invention stores a computer program thereon, and when the program is executed by a processor, implements the method for implementing a shock-absorbing and isolating system as described in Embodiment 3.

The computer-readable storage medium provided in this embodiment can be the memory including program instructions described in Embodiment 4, and the program instructions can be executed by the processor of the electronic device to complete the method for implementing the vibration reduction and isolation system.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (35)

1. A shock-absorbing and isolating system, characterized in that it comprises a pumping liquid device and a cavity (1) arranged on the foundation (01), wherein a pebble layer (2) is filled in the cavity (1), The cavity (1) holds liquid, the liquid pumping device is used for injecting or pumping liquid into the cavity (1), and the pebble layer (2) is used as a building structure (20) foundation. 2 . The shock-absorbing and isolating system according to claim 1 , wherein the wall of the cavity ( 1 ) is a concrete wall or a reinforced concrete wall. 3 . 3 . The shock isolation system according to claim 1 , wherein a soft clay layer ( 3 ) is filled in the cavity ( 1 ), and the soft clay layer ( 3 ) is located in the pebble layer ( 3 . 3 . 2) Top. 4. The shock isolation system according to claim 1, wherein the pebble layer (2) comprises coarse gravel particles (4) and fine sand particles (5). 5. The shock-absorbing and isolating system according to claim 4, characterized in that, the particle size of the coarse gravel particles (4) is 6cm-20cm. 6. The shock-absorbing and isolating system according to claim 4, characterized in that, the particle size of the fine sand particles (5) is 0.075cm-6cm. 7. The shock-absorbing and isolating system according to claim 1, wherein the pumping liquid device comprises: a liquid storage unit (16) for storing spare liquid (17); A power pump (12) is in communication with the liquid storage unit (16) and the pebble layer (2), and the power pump (12) is used for injecting the backup liquid (17) into the pebble layer (2) to become Pore liquid (6), or for pumping said pore liquid (6) into said liquid storage unit (16). 8. The shock-absorbing and isolating system according to claim 7, wherein the power pump (12) is a bidirectional pump, and the bidirectional pump can be used for liquid injection and pumping; Or the power pump (12) is two one-way pumps, one of the one-way pumps is used for liquid injection, and the other one-way pump is used for liquid extraction. 9 . The vibration damping and isolation system according to claim 7 , characterized in that it comprises a plurality of the power pumps ( 12 ), and the power pumps ( 12 ) are arranged in parallel and/or in series. 10 . 10. The shock-absorbing and isolating system according to claim 7, wherein the power pump (12) and the liquid storage unit (16) communicate with each other through a pipeline (8), and the power pump (12) and The pebble layer (2) is communicated through the pipeline (8). 11. The shock-absorbing and isolating system according to claim 10, wherein a control valve (8) is provided on the pipeline (8) between the power pump (12) and the liquid storage unit (16). 18). 12. The shock-absorbing and isolating system according to claim 7, characterized in that it further comprises a pipeline well (9), and the pipeline well (9) penetrates deep into the pebble layer (2). 13 . The shock isolation system according to claim 12 , wherein the bottom of the pipeline well ( 9 ) is located from the middle position to the bottom position in the depth direction of the pebble layer ( 2 ). 14 . 14. The shock isolation system according to claim 12, characterized in that, the pipeline well (9) is a borehole. 15. The shock-absorbing and isolating system according to claim 12, wherein a well pipe (10) is provided in the pipeline well (9), and the top of the well pipe (10) is connected to the power pump (12) ). 16. The shock isolation system according to claim 7, wherein the liquid storage unit (16) comprises at least one liquid storage tank. 17. The shock-absorbing and isolating system according to claim 7, characterized in that, the backup liquid (17) is water, polyester polyol liquid or polyhalide liquid. 18. The shock isolation system according to any one of claims 1-17, characterized in that it further comprises a control device (19), wherein the control device (19) is connected to the liquid pumping device, and the control device (19) is used to control the liquid infusion device to inject or extract liquid into the cavity (1). 19. The shock isolation system according to claim 18, characterized in that the control device (19) comprises a computer. 20. The seismic isolation system according to claim 18, characterized in that it further comprises a data monitoring device, the data monitoring device is connected to the control device (19), and the data monitoring device is used for monitoring under the action of earthquake excitation The displacement of the building structure (20) and the quality of the pebble layer (2) are monitored and data of the displacement and the quality are transmitted to the control device (19). 21. The shock isolation system according to claim 20, wherein the data monitoring device comprises an acceleration sensor (15), and the acceleration sensor (15) is provided on the building structure (20). 22. The shock-absorbing and isolating system according to claim 20, wherein the data monitoring device comprises a liquid density sensor (14), and the liquid density sensor (14) is provided in the pebble layer (2). 23. The shock-absorbing and isolating system according to claim 20, wherein the data monitoring device comprises a liquid pressure sensor (13), and the liquid pressure sensor (13) is arranged in the pebble layer (2). 24. A construction method for a shock-absorbing and isolating system, characterized in that, A pit is dug on the foundation (01), and the surface of the pit is waterproofed to form a cavity (1); A pebble layer (2) is filled in the cavity (1), and the pebble layer (2) is used as the foundation of the building structure (20); A well pipe (10) is arranged in the cavity (1), the well pipe (10) goes deep into the pebble layer (2), the top of the well pipe (10) is connected to a pipeline (8), and the pipe The road (8) is connected to a liquid storage unit (16), and the liquid storage unit (16) stores a spare liquid (17). 25. The construction method according to claim 24, wherein the foundation (01) is reinforced after digging. 26. The construction method according to claim 24, wherein the pipeline (8) is connected to a power pump (12), the power pump (12) is connected to the liquid storage unit (16), and the power A pump (12) is used for injecting the standby liquid (17) into the pebble layer (2), or for pumping the pore liquid (6) in the pebble layer (2) into the liquid storage unit (16) . 27. The construction method according to claim 24, wherein the power pump (12) is connected to a control device (19), the control device (19) is connected to a data monitoring device, and the data monitoring device comprises an acceleration sensor (15), a liquid density sensor (14) and a liquid pressure sensor (13); The acceleration sensor (15) is arranged on the building structure (20), and the liquid density sensor (14) and the liquid pressure sensor (13) are arranged in the pebble layer (2). 28. The construction method according to any one of claims 24-27, characterized in that, a pipeline well (9) is constructed in the cavity (1), and the well pipe (10) is located in the pipeline well ( 9) within. 29. A method for realizing the shock-absorbing and isolating system according to any one of claims 1-23, characterized in that, obtaining the natural vibration period and/or the natural vibration frequency of the building structure (20); acquiring the natural period and/or the natural frequency of the pebble layer (2) in the cavity (1); The liquid injection device is used to inject or extract liquid into the cavity (1), so as to change the quality of the pebble layer (2), thereby changing the natural vibration period and/or of the pebble layer (2). or the natural vibration frequency, so that the natural vibration frequency of the pebble layer (2) reaches [0.8, 1.2] of the natural vibration frequency of the building structure (20). 30. The implementation method according to claim 29, wherein, According to the natural vibration period and/or the natural frequency of the building structure (20) and the natural vibration period and/or the natural frequency of the pebble layer (2), the building structure (20) and the pebble layer are obtained (2) The difference between the natural vibration period and/or the natural vibration frequency; According to the difference value, it is determined that the liquid pumping device injects or draws liquid into the pebble layer (2). 31. The realization method according to claim 29, wherein a numerical model of the building structure (20) is established, and a modal analysis is performed to obtain the natural vibration period and/or the natural vibration frequency of the building structure (20). . 32. The realization method according to claim 29, characterized in that a numerical model of the pebble layer (2) in the cavity (1) is established, and a modal analysis is performed to obtain the self-report of the pebble layer (2). vibration period and/or natural frequency. 33. The implementation method according to any one of claims 29-32, wherein, After the natural vibration frequency of the pebble layer (2) reaches [0.8, 1.2] of the natural vibration frequency of the building structure (20), under the action of seismic excitation, by monitoring the displacement amplitude and/or the top layer of the building structure (20) Or the data index of the displacement between layers, to determine whether the pebble layer (2) after the quality change has a shock absorption effect; If the shock absorption effect is not as expected, dynamic correction of the quality of the pebble layer (2) is performed according to the data index. 34. An electronic device, characterized in that, comprising: a memory on which a computer program is stored; A processor for executing the program in the memory to implement the method according to any one of claims 29-33. 35. A computer-readable storage medium on which a computer program is stored, characterized in that, when the program is executed by a processor, the method according to any one of claims 29-33 is implemented.

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