Design method for damping and reinforcing building structure

Abstract

The invention relates to a design method for vibration reduction and reinforcement of a building structure, belongs to the technical field of vibration reduction and reinforcement design, and solves the problem that in the prior art, an existing design method must depend on the dynamic load of mechanical equipment when an industrial building vibration reduction and reinforcement scheme is verified. Establishing a finite element model based on the target building structure design scheme and the vibration reduction and reinforcement design scheme; calculating a first simulation vibration response of the key point location and a second simulation vibration response of the contact point location based on a finite element model; based on the first simulation vibration response and the second simulation vibration response, calculating a first simulation vibration transfer ratio under the vibration reduction and reinforcement structure; obtaining a first actual measurement vibration response of the contact point location in the actual measurement environment, and obtaining a first vibration response of the key point location based on the first actual measurement vibration response and the first simulation vibration transfer ratio; and if the first vibration response meets the comfort level control standard limit value limited in the engineering requirement, the current vibration reduction and reinforcement structure serves as the final vibration reduction and reinforcement structure. According to the verification method, the dynamic load of the mechanical equipment does not need to be determined, and the structural vibration response of the industrial building under the action of the vibration source of the mechanical equipment and the vibration reduction and reinforcement structure can be calculated.

Description

Technical Field

[0001] The invention relates to the technical field of vibration reduction and reinforcement design, and in particular to a design method for vibration reduction and reinforcement of a building structure. Background Art

[0002] In actual production activities, many industrial equipment have strict requirements on the operating environment. Excessive vibration will affect the normal operation of the equipment and increase wear and maintenance costs. Especially in precision manufacturing industries such as semiconductors and optical instruments, small vibrations will affect product quality. Therefore, with the development of industry, more and more research is being conducted on the vibration reduction and reinforcement capabilities of industrial buildings.

[0003] In the prior art, the direct method is usually used to determine the vibration reduction and reinforcement scheme for industrial buildings. The direct method requires the establishment of a structural finite element model based on the structural drawings of the industrial building and the proposed vibration reduction and reinforcement scheme. The force time history or force spectrum generated by the mechanical equipment is then input into the finite element model to calculate the vibration response of the structure. The vibration reduction and reinforcement scheme is repeatedly modified and iterated until a vibration reduction and reinforcement scheme that meets the vibration comfort target is determined. However, the direct method requires clear knowledge of the dynamic load generated by the mechanical equipment during normal operation, that is, the force time history or force spectrum, and the dynamic load of the mechanical equipment is difficult to obtain accurately. Therefore, when the dynamic load of the mechanical equipment cannot be determined, the direct method cannot be used to calculate the structural vibration response, and thus the vibration reduction and reinforcement scheme for the industrial building cannot be determined.

[0004] Therefore, a verification method is needed that can calculate the structural vibration response of industrial buildings under the action of mechanical equipment vibration sources and the vibration reduction and reinforcement structure without determining the dynamic load of mechanical equipment. Summary of the invention

[0005] In view of the above analysis, an embodiment of the present invention aims to provide a design method for vibration reduction and reinforcement of building structures, so as to solve the problem that the existing design method must rely on the dynamic load of mechanical equipment when verifying the vibration reduction and reinforcement scheme of industrial buildings.

[0006] An embodiment of the present invention provides a design method for vibration reduction and reinforcement of a building structure, comprising:

[0007] S1: Acquire key points and contact points of a target building structure, wherein the key points refer to positions with the smallest structural stiffness and / or designated research positions in the target building structure, and the contact points refer to contact positions between target mechanical equipment and the target building structure;

[0008] S2: constructing a finite element model of the target building structure;

[0009] S3: obtaining a vibration reduction and reinforcement structure corresponding to the target building structure, and constructing a vibration reduction and reinforcement finite element model corresponding to the vibration reduction and reinforcement structure;

[0010] S4: establishing a target building structure vibration reduction and reinforcement structure finite element model based on the target building structure finite element model and the vibration reduction and reinforcement finite element model;

[0011] S5: calculating a first simulated vibration response of the key point and a second simulated vibration response of the contact point based on the finite element model of the vibration reduction and reinforcement structure of the target building structure;

[0012] S6: calculating a first simulated vibration transmission ratio of the vibration reduction and reinforcement structure based on the first simulated vibration response and the second simulated vibration response;

[0013] S7: Obtain a first measured vibration response of a contact point under a measurement environment, and obtain a first vibration response of a key point based on the first measured vibration response and a first simulated vibration transfer ratio;

[0014] S8: If the first vibration response meets the comfort control standard limit specified in the engineering requirements, the calculation is stopped and the current vibration reduction reinforcement structure is used as the final vibration reduction reinforcement structure. If it does not meet the requirements, the vibration reduction reinforcement structure is adjusted and the process returns to S3 until the first vibration response of the adjusted vibration reduction reinforcement structure meets the comfort control standard limit.

[0015] Based on a further improvement of the above method, the construction of the target building structure finite element model of the target building structure includes: taking the position with the smallest structural stiffness in the target building structure as the first key point, and taking the research position specified according to engineering needs in the target building structure as the second key point; obtaining the vibration response of the first key point and / or the second key point, and calculating the damping ratio of the target building structure; and establishing the target building structure finite element model according to the geometric dimensions, material properties and the damping ratio of the target building structure.

[0016] Based on the further improvement of the above method, after the target building structure finite element model is established, it is also necessary to perform a verification operation on the target building structure finite element model.

[0017] Based on the further improvement of the above method, the verification operation includes: performing an on-site stiffness test on the first key point and / or the second key point to obtain the measured dynamic stiffness of the first key point and / or the second key point; inputting the test parameters in the on-site stiffness test into the target building structure finite element model to obtain the simulated dynamic stiffness corresponding to the first key point and / or the second key point; if the difference between the measured dynamic stiffness and the simulated dynamic stiffness is within the allowable error range, performing a vibration test and a simulation calculation on the first key point and / or the second key point and the contact point to obtain the measured vibration transfer ratio and the simulated vibration transfer ratio respectively; if it is not within the allowable error range, adjusting the damping ratio so that the difference between the measured dynamic stiffness and the simulated dynamic stiffness is within the allowable error; if the difference between the measured vibration transfer ratio and the simulated vibration transfer ratio is within the allowable error range, it indicates that the established target building structure finite element model is valid; if it is not within the allowable error range, adjusting the damping ratio so that the difference between the measured vibration transfer ratio and the simulated vibration transfer ratio is within the allowable error.

[0018] Based on the further improvement of the above method, the first key point and / or the second key point and the contact point are subjected to vibration testing and simulation calculation to obtain the measured vibration transfer ratio and the simulated vibration transfer ratio respectively, including: performing an on-site vibration response test on the first key point and / or the second key point and the contact point to obtain the measured vibration response of the first key point and / or the second key point and the contact point; calculating the first measured vibration transfer ratio based on the measured vibration response of the first key point and the measured vibration response of the contact point, and / or, based on the The measured vibration response of the second key point and the measured vibration response of the contact point are used to calculate a second measured vibration transfer ratio; a unit load is input to the contact point of the target building structure finite element model, and the simulated vibration response corresponding to the first key point and / or the second key point and the contact point is calculated; the second simulated vibration transfer ratio is calculated based on the simulated vibration response of the first key point and the simulated vibration response of the contact point, and / or the third simulated vibration transfer ratio is calculated based on the simulated vibration response of the second key point and the simulated vibration response of the contact point.

[0019] Based on the further improvement of the above method, the difference between the measured vibration transfer ratio and the simulated vibration transfer ratio is within the allowable error, which means: the difference between the second simulated vibration transfer ratio and the first measured vibration transfer ratio is within the allowable error range, and / or the difference between the third simulated vibration transfer ratio and the second measured vibration transfer ratio is within the allowable error range.

[0020] Based on the further improvement of the above method, the target mechanical equipment is a placement machine, and the contact point refers to the contact position between the column foot of the placement machine and the target building structure.

[0021] Based on the further improvement of the above method, the measured dynamic stiffness of the first key point and / or the second key point is obtained in the following manner:

[0022]

[0023] Wherein, F is the force generated by the hammer exciting the first key point or the second key point, and S is the displacement generated by the first key point or the second key point.

[0024] Based on a further improvement of the above method, the first measured vibration transfer ratio is calculated based on the measured vibration response of the first key point and the measured vibration response of the contact point, including:

[0025]

[0026] Among them, VR is the measured vibration response of the first key point, and VRR is the measured vibration response of the contact point.

[0027] Based on a further improvement of the above method, the step of calculating a first simulated vibration transfer ratio of the vibration reduction and reinforcement structure based on the first simulated vibration response and the second simulated vibration response includes:

[0028]

[0029] Wherein, VC is the first simulated vibration response, and VCC is the second simulated vibration response;

[0030] The obtaining a first vibration response of a key point based on the first measured vibration response and the first simulated vibration transfer ratio includes:

[0031] VJR=VR′*T′,

[0032] Wherein, VR' is the first measured vibration response.

[0033] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0034] 1. The present invention provides a design method for vibration reduction and reinforcement of building structures. The method does not require the acquisition of the dynamic load of mechanical equipment, but only requires two parameters: vibration response data obtained from the actual environment and vibration transfer ratio obtained from the finite element model of the target building structure. The effectiveness of the current vibration reduction and reinforcement structure is continuously verified based on the finite element model, and the vibration resistance corresponding to the current vibration reduction and reinforcement structure can be quickly obtained. The method is simple to operate and has high timeliness.

[0035] 2. The present invention provides a design method for vibration reduction and reinforcement of building structures. In the process of establishing a finite element model of a target building structure, the finite element model is verified based on the difference between the measured dynamic stiffness and the simulated dynamic stiffness, and the difference between the measured vibration transfer ratio and the simulated vibration transfer ratio. The secondary verification method further improves the accuracy of the finite element model.

[0036] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components;

[0038] Figure 1 This is an example diagram of a design method for vibration reduction and reinforcement of a building structure in an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0040] In the prior art, when the dynamic load of mechanical equipment cannot be determined, the direct method cannot be used to calculate the structural vibration response, and thus the vibration reduction and reinforcement scheme for industrial buildings cannot be determined. The technical solution proposed by the present invention overcomes the defects in the prior art. It only needs to measure the structural vibration response generated by the mechanical equipment (i.e., the vibration response of the contact point) and use it as the basic vibration data. Combined with the vibration transfer ratio calculated by the finite element simulation model corresponding to the vibration reduction and reinforcement structure, the vibration response of the key points under the vibration reduction and reinforcement structure can be determined, thereby determining an effective vibration reduction and reinforcement scheme for industrial buildings.

[0041] A specific embodiment of the present invention discloses a design method for vibration reduction and reinforcement of a building structure, such as Figure 1 As shown, including:

[0042] S1: Acquire key points and contact points of a target building structure, wherein the key points refer to positions where the structural stiffness is the smallest and / or designated research positions in the target building structure, and the contact points refer to contact positions between target mechanical equipment and the target building structure.

[0043] By analyzing the composition of the target building structure, the position with the maximum or minimum structural stiffness is determined based on structural mechanics as the key point. In the present invention, the position with the minimum structural stiffness is used as the key point. The designated research position can also be used as the key point according to business needs or research purposes. When studying vibration reduction and reinforcement structures, the technical solution proposed in the present invention supports the free selection of points so that the final vibration reduction and reinforcement structure solution better meets the personalized needs of users.

[0044] The target mechanical equipment in the present invention is determined according to business needs or research purposes. Exemplarily, the target mechanical equipment can be a chip mounter, a machine tool (e.g., a punching machine, etc.), a crusher, etc., and any mechanical equipment that can generate vibration can be used as the target mechanical equipment in the present invention. Preferably, when the target mechanical equipment is a chip mounter, the contact point refers to the contact position between the column foot of the chip mounter and the target building structure.

[0045] For example, the key points may be the mid-span of a floor slab, the mid-span of a beam, the base of a column, etc.

[0046] S2: constructing a target building structure finite element model of the target building structure, including:

[0047] S21: The position where the structural stiffness of the target building structure is the smallest is used as the first key point, and the research position specified according to engineering needs in the target building structure is used as the second key point.

[0048] S22: Acquire the vibration response of the first key point and / or the second key point, and calculate the damping ratio of the target building structure.

[0049] Perform an on-site vibration response test on the target building structure to measure the vibration response of the first key point and / or the second key point and the contact point under the action of the target mechanical equipment. The vibration response can be vibration acceleration, vibration velocity or vibration displacement, which is not limited in the present invention and can be selected according to business needs or test purposes.

[0050] When calculating the damping ratio of the target building structure, the half-power bandwidth method, the free vibration attenuation method, the resonance amplification method, etc. can be used, and the present invention is not limited here. When there is only the first key point, the damping ratio is calculated based on the vibration response data of the first key point. When there is only the second key point, the damping ratio is calculated based on the vibration response data of the second key point. When both the first key point and the second key point exist, the vibration response data of any key point can be selected to calculate the damping ratio, or the damping ratio corresponding to each vibration response data can be calculated, and then the average value of the damping ratios corresponding to all key points is used as the final damping ratio.

[0051] S23: Establishing a finite element model of the target building structure according to the geometric dimensions, material properties and damping ratio of the target building structure.

[0052] After establishing the target building structure finite element model, it is also necessary to perform a verification operation on the target building structure finite element model, including:

[0053] S24: performing an on-site stiffness test on the first key point and / or the second key point to obtain the actual measured dynamic stiffness of the first key point and / or the second key point.

[0054] The stiffness test may adopt a force hammer excitation method, a vibration excitation method, etc., which is not specifically limited in the present invention.

[0055] The measured dynamic stiffness of the first key point and / or the second key point is obtained in the following manner:

[0056]

[0057] Wherein, F is the force generated by the hammer exciting the first key point or the second key point, and S is the displacement generated by the first key point or the second key point.

[0058] S25: Inputting the test parameters in the on-site stiffness test into the target building structure finite element model to obtain the simulated dynamic stiffness corresponding to the first key point and / or the second key point.

[0059] S26: If the difference between the measured dynamic stiffness and the simulated dynamic stiffness is within the allowable error range, vibration testing and simulation calculation are performed on the first key point and / or the second key point and the contact point to obtain the measured vibration transfer ratio and the simulated vibration transfer ratio respectively; if it is not within the allowable error range, the damping ratio is adjusted so that the difference between the measured dynamic stiffness and the simulated dynamic stiffness is within the allowable error.

[0060] Performing vibration testing and simulation calculation on the first key point and / or the second key point and the contact point to obtain a measured vibration transfer ratio and a simulated vibration transfer ratio respectively includes:

[0061] Perform an on-site vibration response test on the first key point and / or the second key point, and the contact point to obtain the measured vibration response of the first key point and / or the second key point and the contact point.

[0062] A first measured vibration transfer ratio is calculated based on the measured vibration response of the first key point and the measured vibration response of the contact point, and / or a second measured vibration transfer ratio is calculated based on the measured vibration response of the second key point and the measured vibration response of the contact point.

[0063] The step of calculating the first measured vibration transfer ratio based on the measured vibration response of the first key point and the measured vibration response of the contact point includes:

[0064]

[0065] Wherein, VR is the measured vibration response of the first key point, VRR is the measured vibration response of the contact point. The second measured vibration transfer ratio is calculated based on the measured vibration response of the second key point and the measured vibration response of the contact point;

[0066]

[0067] Among them, VR′ is the measured vibration response of the first key point, and VRR′ is the measured vibration response of the contact point.

[0068] The unit load is input to the contact point of the target building structure finite element model, and the simulated vibration response corresponding to the first key point and / or the second key point and the contact point is calculated.

[0069] A second simulated vibration transfer ratio is calculated based on the simulated vibration response of the first key point and the simulated vibration response of the contact point, and / or a third simulated vibration transfer ratio is calculated based on the simulated vibration response of the second key point and the simulated vibration response of the contact point.

[0070] S27: If the difference between the measured vibration transfer ratio and the simulated vibration transfer ratio is within the allowable error range, it indicates that the established finite element model of the target building structure is valid; if it is not within the allowable error range, the damping ratio is adjusted so that the difference between the measured vibration transfer ratio and the simulated vibration transfer ratio is within the allowable error.

[0071] The difference between the measured vibration transfer ratio and the simulated vibration transfer ratio is within the allowable error range, which means that the difference between the second simulated vibration transfer ratio and the first measured vibration transfer ratio is within the allowable error range, and / or the difference between the third simulated vibration transfer ratio and the second measured vibration transfer ratio is within the allowable error range.

[0072] Exemplarily, for the current target building structure and its finite element model, if the key point is only the first key point, the difference between the second simulated vibration transfer ratio and the first measured vibration transfer ratio is within the allowable error range as the judgment condition for whether the finite element model of the target building structure is valid; if the key point is only the second key point, the difference between the third simulated vibration transfer ratio and the second measured vibration transfer ratio is within the allowable error range as the judgment condition for whether the finite element model of the target building structure is valid; if the key points include both the first key point and the second key point, the difference between the second simulated vibration transfer ratio and the first measured vibration transfer ratio is within the allowable error range, and the difference between the third simulated vibration transfer ratio and the second measured vibration transfer ratio is within the allowable error range as the judgment condition for whether the finite element model of the target building structure is valid.

[0073] It is understandable that the first key point and the second key point may include multiple positions. Therefore, when judging whether the difference between the second simulated vibration transfer ratio and the first measured vibration transfer ratio is within the allowable error range or whether the difference between the third simulated vibration transfer ratio and the second measured vibration transfer ratio is within the allowable error range, it is necessary to ensure that the difference between the simulated vibration transfer ratio and the measured vibration transfer ratio of each key point is within the allowable error range. The ultimate goal of verifying the finite element model of the target building structure is to determine whether the calculation design of the reinforcement plan can be performed using finite element calculation to ensure that the final structure is reasonable and reliable.

[0074] The allowable error is set manually according to business requirements or actual needs. For example, the allowable error range is 0.05 to 0.1.

[0075] Exemplarily, the measured vibration transmission ratio may be a ratio of the maximum values ​​in the time domain between the key point and the contact point, or a ratio of the amplitude values ​​in the frequency domain.

[0076] S3: Acquire a vibration reduction and reinforcement structure corresponding to the target building structure, and construct a vibration reduction and reinforcement finite element model corresponding to the vibration reduction and reinforcement structure.

[0077] The vibration reduction and reinforcement structure scheme is determined based on the experience of engineers and the results of on-site vibration response tests. The vibration reduction and reinforcement structure scheme includes: the material, size and other properties of building structural components such as floor slabs, floors, beams, columns, the combination form of each building structural component, and the installation position and installation method. The purpose of the present invention is to verify the effectiveness of the vibration reduction and reinforcement structure. The verification method proposed by the present invention can be used for any vibration reduction and reinforcement structure.

[0078] After obtaining the current vibration reduction and reinforcement structure scheme, a finite element model corresponding to the vibration reduction and reinforcement structure is established using finite element software according to the scheme.

[0079] It can be understood that this step is to instantiate each component in the vibration reduction and reinforcement structure scheme. If it is a separate component, it can be established directly. If it is a component with a connection relationship, the connection relationship between the components needs to be considered when establishing it. Therefore, the number of finite element model components established in this step can be one or more, which needs to be determined according to the actual vibration reduction and reinforcement structure scheme.

[0080] S4: establishing a target building structure vibration reduction and reinforcement structure finite element model based on the target building structure finite element model and the vibration reduction and reinforcement finite element model.

[0081] According to the vibration reduction and reinforcement structure scheme, each vibration reduction and reinforcement finite element model established in step S3 is installed at a corresponding position of the target building structure finite element model, and finally a vibration reduction and reinforcement structure finite element model of the target building structure is formed.

[0082] Each finite element model in the present invention is implemented using general finite element software or professional finite element software. The specific implementation method of using finite element modeling software to establish a target building structure finite element model and a vibration reduction and reinforcement finite element model according to business needs is also common knowledge in the field, and the present invention is not limited here.

[0083] S5: Calculating a first simulated vibration response of the key point and a second simulated vibration response of the contact point based on the finite element model of the vibration reduction and reinforcement structure of the target building structure.

[0084] The unit load is applied to the contact points of the finite element model of the vibration reduction and reinforcement structure of the target building structure, and the vibration response of the key points is calculated. After the calculation is completed, the vibration responses of the contact points and the key points are extracted as the first simulation vibration response and the second simulation vibration response.

[0085] Exemplarily, for the current target building structure and its finite element model, if the key point is only the first key point, only the vibration response of the first key point is calculated; if the key point is only the second key point, only the vibration response of the second key point is calculated; if the key points include both the first key point and the second key point, then the vibration response of the first key point and the second key point is calculated.

[0086] S6: Calculating a first simulated vibration transmission ratio of the vibration reduction and reinforcement structure based on the first simulated vibration response and the second simulated vibration response, including:

[0087]

[0088] Among them, VC is the first simulated vibration response, and VCC is the second simulated vibration response.

[0089] It can be understood that there may be multiple key points. When calculating the first simulated vibration transfer ratio, the first simulated vibration response corresponding to the key point to be studied is used as input to calculate the simulated vibration transfer ratio corresponding to the key point, and then judge whether the key point meets the comfort control requirements through subsequent steps.

[0090] S7: Obtain a first measured vibration response of the contact point in the actual measurement environment, and obtain a first vibration response of the key point based on the first measured vibration response and a first simulated vibration transfer ratio.

[0091] The obtaining a first vibration response of a key point based on the first measured vibration response and the first simulated vibration transfer ratio includes:

[0092] VJR=VR′*T′,

[0093] Wherein, VR' is the first measured vibration response.

[0094] For example, the calculated vibration transfer ratio of the vibration reduction and reinforcement structure is multiplied by the measured vibration response of the contact point between the mechanical equipment and the structure (floor or structural bottom plate, beam, column) to obtain the vibration response of the control point of the vibration reduction and reinforcement structure.

[0095] S8: If the first vibration response meets the comfort control standard limit specified in the engineering requirements, the calculation is stopped and the current vibration reduction reinforcement structure is used as the final vibration reduction reinforcement structure. If it does not meet the requirements, the vibration reduction reinforcement structure is adjusted and the process returns to S3 until the first vibration response of the adjusted vibration reduction reinforcement structure meets the comfort control standard limit.

[0096] The comfort control standard limit can be set manually according to business needs or actual needs, or it can be set according to the standards in the "Industrial Building Vibration Control Design Standard" GB 50190-2020, the "Technical Standard for Vibration Comfort of Building Floor Structures" JGJ / T441-2019, and the international standards ISO 2631 and ISO 10816. The present invention is not limited here.

[0097] For example, the Technical Standard for Vibration Comfort of Building Floor Structures JGJ / T 441-2019 stipulates that the standard limit for comfort control in the production operation area is the peak acceleration limit, which is usually 0.4m / s 2 .

[0098] Exemplarily, adjusting the vibration reduction reinforcement structure means increasing or decreasing the thickness of the floor slab and the structural base slab, the height or width of the beams and columns, or changing the structural form, material, etc. of the floor slab, the structural base slab, the beams and columns.

[0099] Compared with the prior art, the present embodiment provides a design method for vibration reduction and reinforcement of building structures, which does not require the acquisition of the dynamic load of mechanical equipment, but only requires two parameters, namely, vibration response data acquired in the actual environment and vibration transfer ratio acquired by the finite element model of the target building structure. Then, the effectiveness of the current vibration reduction and reinforcement structure is continuously verified based on the finite element model, and the vibration resistance corresponding to the current vibration reduction and reinforcement structure can be quickly obtained. The operation is simple and the timeliness is high. In the process of establishing the finite element model of the target building structure, the finite element model is verified based on the difference between the measured dynamic stiffness and the simulated dynamic stiffness, and the difference between the measured vibration transfer ratio and the simulated vibration transfer ratio. The secondary verification method further improves the accuracy of the finite element model.

[0100] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0101] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A design method for vibration reduction and reinforcement of building structures, characterized in that: include: S1: Acquire key points and contact points of a target building structure, wherein the key points refer to positions with the smallest structural stiffness and / or designated research positions in the target building structure, and the contact points refer to contact positions between target mechanical equipment and the target building structure; S2: constructing a finite element model of the target building structure; S3: obtaining a vibration reduction and reinforcement structure corresponding to the target building structure, and constructing a vibration reduction and reinforcement finite element model corresponding to the vibration reduction and reinforcement structure; S4: establishing a target building structure vibration reduction and reinforcement structure finite element model based on the target building structure finite element model and the vibration reduction and reinforcement finite element model; S5: calculating a first simulated vibration response of the key point and a second simulated vibration response of the contact point based on the finite element model of the vibration reduction and reinforcement structure of the target building structure; S6: calculating a first simulated vibration transmission ratio of the vibration reduction and reinforcement structure based on the first simulated vibration response and the second simulated vibration response; S7: Obtain a first measured vibration response of a contact point under a measurement environment, and obtain a first vibration response of a key point based on the first measured vibration response and a first simulated vibration transfer ratio; S8: If the first vibration response meets the comfort control standard limit specified in the engineering requirements, the calculation is stopped and the current vibration reduction reinforcement structure is used as the final vibration reduction reinforcement structure. If it does not meet the requirements, the vibration reduction reinforcement structure is adjusted and the process returns to S3 until the first vibration response of the adjusted vibration reduction reinforcement structure meets the comfort control standard limit.

2. A design method for vibration reduction and reinforcement of a building structure according to claim 1, characterized in that: The step of constructing a target building structure finite element model of the target building structure comprises: The position where the structural stiffness of the target building structure is the smallest is used as the first key point, and the research position specified according to the engineering needs is used as the second key point in the target building structure; Acquire the vibration response of the first key point and / or the second key point, and calculate the damping ratio of the target building structure; A finite element model of the target building structure is established according to the geometric dimensions, material properties and damping ratio of the target building structure.

3. A design method for vibration reduction and reinforcement of building structures according to claim 2, characterized in that: After the target building structure finite element model is established, it is also necessary to perform a verification operation on the target building structure finite element model.

4. A design method for vibration reduction and reinforcement of building structures according to claim 3, characterized in that: The verification operation includes: Performing an on-site stiffness test on the first key point and / or the second key point to obtain the measured dynamic stiffness of the first key point and / or the second key point; Inputting the test parameters in the on-site stiffness test into the target building structure finite element model to obtain the simulated dynamic stiffness corresponding to the first key point and / or the second key point; If the difference between the measured dynamic stiffness and the simulated dynamic stiffness is within the allowable error range, vibration testing and simulation calculation are performed on the first key point and / or the second key point and the contact point to obtain the measured vibration transfer ratio and the simulated vibration transfer ratio respectively; if it is not within the allowable error range, the damping ratio is adjusted so that the difference between the measured dynamic stiffness and the simulated dynamic stiffness is within the allowable error range; If the difference between the measured vibration transfer ratio and the simulated vibration transfer ratio is within the allowable error range, it indicates that the established finite element model of the target building structure is valid; if it is not within the allowable error range, the damping ratio is adjusted so that the difference between the measured vibration transfer ratio and the simulated vibration transfer ratio is within the allowable error.

5. A design method for vibration reduction and reinforcement of building structures according to claim 4, characterized in that: Performing vibration testing and simulation calculation on the first key point and / or the second key point and the contact point to obtain a measured vibration transfer ratio and a simulated vibration transfer ratio respectively includes: Performing an on-site vibration response test on the first key point and / or the second key point, and the contact point to obtain the measured vibration response of the first key point and / or the second key point, and the contact point; A first measured vibration transfer ratio is calculated based on the measured vibration response of the first key point and the measured vibration response of the contact point, and / or a second measured vibration transfer ratio is calculated based on the measured vibration response of the second key point and the measured vibration response of the contact point; Inputting a unit load to a contact point of the target building structure finite element model, and calculating a simulated vibration response corresponding to the first key point and / or the second key point and the contact point; A second simulated vibration transfer ratio is calculated based on the simulated vibration response of the first key point and the simulated vibration response of the contact point, and / or a third simulated vibration transfer ratio is calculated based on the simulated vibration response of the second key point and the simulated vibration response of the contact point.

6. A design method for vibration reduction and reinforcement of building structures according to claim 5, characterized in that: The difference between the measured vibration transfer ratio and the simulated vibration transfer ratio is within the allowable error range: The difference between the second simulated vibration transfer ratio and the first measured vibration transfer ratio is within an allowable error range, and / or the difference between the third simulated vibration transfer ratio and the second measured vibration transfer ratio is within an allowable error range.

7. A design method for vibration reduction and reinforcement of building structures according to claim 6, characterized in that: include: The target mechanical equipment is a chip mounter, and the contact point refers to the contact position between the column foot of the chip mounter and the target building structure.

8. A design method for vibration reduction and reinforcement of building structures according to claim 7, characterized in that: The measured dynamic stiffness of the first key point and / or the second key point is obtained in the following manner: Wherein, F is the force generated by the hammer exciting the first key point or the second key point, and S is the displacement generated by the first key point or the second key point.

9. A design method for vibration reduction and reinforcement of building structures according to claim 8, characterized in that: include: The calculating the first measured vibration transfer ratio based on the measured vibration response of the first key point and the measured vibration response of the contact point includes: Among them, VR is the measured vibration response of the first key point, and VRR is the measured vibration response of the contact point.

10. A design method for vibration reduction and reinforcement of building structures according to claim 9, characterized in that: The calculating a first simulated vibration transmission ratio of the vibration reduction and reinforcement structure based on the first simulated vibration response and the second simulated vibration response includes: Wherein, VC is the first simulated vibration response, and VCC is the second simulated vibration response; The obtaining a first vibration response of a key point based on the first measured vibration response and the first simulated vibration transfer ratio includes: VJR=VR′*T′, Wherein, VR' is the first measured vibration response.

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