Vibration response interlayer transfer test method considering TMD setting

Abstract

The invention provides a vibration response interlayer transfer test method considering TMD setting, and the method comprises the following steps: S1, selecting a TMD device according with a working condition according to an actual structure of a plant, setting a TMD in the plant, then locking the TMD, enabling the TMD not to participate in the work, and carrying out the same-layer and interlayer vibration response test under the equipment vibration excitation; s2, releasing the TMD to enable the TMD to participate in work, and performing same-layer and interlayer vibration response tests under equipment vibration excitation; and analyzing the transmission rule of the vibration response according to the obtained data. By the adoption of the technical scheme, not only is vibration response transmission of vibration in a certain layer of plane considered, but also transmission of vibration response between floors after the TMD device is arranged under the vibration overrun condition is considered, guiding significance is provided for more reasonable function division of the structure, and transmission of vibration in the whole structure can be known more comprehensively.

Description

Technical Field

[0001] The present invention relates to the field of vibration measurement technology, and in particular to a vibration response interlayer transmission test method considering TMD setting. Background Art

[0002] At present, for high-rise industrial plants, the main consideration is the transmission of vibration response within the structure, and most of them mainly consider the transmission of vibration within a certain plane (or within a single component, such as a beam, a plate, or a column). The test method is to set up an excitation source, arrange sensors at the measuring points, and use a signal acquisition instrument to collect the signals collected by the sensors. The collected data types are generally acceleration, velocity, displacement, etc. The data is transmitted to a computer for post-processing. When the vibration response of the structure exceeds the limit, a TMD (tuned mass damper) will be set for vibration control. The method for evaluating the vibration control effect of the TMD is to collect and compare the vibration response indicators at the measuring points before and after the release of the TMD.

[0003] When TMD is set, existing research currently only considers the response comparison of the same floor before and after TMD release. For the structure as a whole, when the equipment excitation is large, not only the excitation source floor may have an excessive vibration response, but the upper and lower adjacent floors may also be affected by the propagation of the equipment vibration response. This point is rarely considered in current research. In addition, due to vibration, each floor slab in the structure may have a response exceeding the limit due to the transmission of vibration waves on the same floor and above and below, which cannot be effectively quantified at present. Summary of the invention

[0004] In response to the above technical problems, the present invention discloses a vibration response interlayer transmission test method considering the TMD setting, which can analyze the changes in the vibration response transmission rules between the same layer and the upper and lower layers before and after the installation of the TMD and release, and provide more precise guidance for functional zoning and protection.

[0005] To this end, the technical solution adopted by the present invention is:

[0006] A vibration response interlayer transmission test method considering TMD setting, comprising the following steps:

[0007] Step S1, according to the actual structure of the plant, select a TMD device that meets the working conditions, set the TMD in the plant, lock the TMD so that it does not participate in the work, and perform the same-layer and inter-layer vibration response test under the vibration excitation of the equipment;

[0008] Step S2, releasing the TMD to make it participate in the work, and conducting the same-layer and inter-layer vibration response test under the vibration excitation of the equipment; and analyzing the transmission law of the vibration response based on the obtained data.

[0009] As a further improvement of the present invention, step S1 includes: according to the plan of each floor of the factory building to be tested, for the floor where TMD needs to be set, the TMD is set in the middle of the floor, the TMD is locked so that it does not work, and the equipment vibration excitation is performed at the TMD setting location; on the floor where the TMD is set, at least one side of the TMD setting location sequentially sets the first test point, the second test point...the nth test point outward, and collects the vibration acceleration time-history curves of the floor at the TMD setting location and the first test point to the nth test point, and at the same time collects the vibration acceleration time-history curves of the remaining floors at the same position at the corresponding TMD setting location.

[0010] As a further improvement of the present invention, step S2 includes: releasing the TMD to make it work, performing vibration excitation of the equipment at the TMD setting, collecting the vibration acceleration time-history curves of the equipment vibration excitation layer at the TMD setting and the 1st test point to the nth test point, and at the same time collecting the vibration acceleration time-history curves of the remaining layers at the same position at the corresponding TMD setting; testing the other layers where the TMD is placed according to the same method.

[0011] As a further improvement of the present invention, the vibration response interlayer transmission test method considering TMD setting also includes:

[0012] Step S3, establishing a finite element model, setting a TMD device at the same position and the same working condition as in step S1, and setting the same equipment vibration excitation at the same position, and performing the same-layer and inter-layer vibration simulation before and after the TMD release;

[0013] Step S4, comparing the test result obtained in step S2 with the finite element simulation result obtained in step S3 to verify the accuracy of the test method.

[0014] As a further improvement of the present invention, in step S3, Madis software is used to establish a finite element model of the overall structure of a high-rise industrial plant; in the modeling of steel tube concrete, the steel tube adopts "shell unit", and the material property assignment is selected as "from bottom to top"; the concrete adopts "solid unit", and the material property assignment is selected as "from neutral axis to both ends"; the contact between the steel tube and the concrete is set to "hard contact" and "friction contact", and the "penalty" is set to 0.4; the steel beam and the structural column adopt the "beam unit" in the "line unit"; the floor slab and the shear wall adopt the "solid unit"; the steel tube and the concrete constraint in the steel tube concrete is set to "shell unit and solid unit" constraint, and the rest of the contact involved is "binding" constraint; the bottom boundary condition is consolidation; the equipment load and the TMD device are consistent with the equipment load and TMD device parameters in the actual structure in steps S1 and S2.

[0015] The present invention discloses the application of the vibration response interlayer transmission test method considering TMD setting as described above, and provides functional zoning suggestions within the plant structure based on the obtained transmission law of the vibration response.

[0016] As a further improvement of the present invention, based on the analysis of the transmission law of the obtained vibration response, the areas where the vibration response of each floor of the factory building exceeds the limit after the TMD is released are obtained, so as to divide the production operation area and the daily office area.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The technical solution of the present invention not only takes into account the transmission of vibration response within a certain plane, but also takes into account the transmission of vibration response between floors after the TMD device is installed when the vibration exceeds the limit. This provides guidance for more reasonable functional zoning of the structure and enables a more comprehensive understanding of the transmission of vibration in the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a flowchart of a vibration response interlayer transmission test method considering TMD setting according to an embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of a plane view of a certain layer of the structure to be tested in an embodiment of the present invention.

[0021] Figure 3 for Figure 2 Schematic diagram of the cross section 1-1.

[0022] Figure 4 This is a finite element overall structural model diagram of an embodiment of the present invention.

[0023] Figure 5 This is a TMD parameter setting diagram of an embodiment of the present invention.

[0024] Figure 6 It is a load curve diagram of the excitation device according to an embodiment of the present invention.

[0025] Figure 7 This is a 0-8 point acceleration time history curve of the TMD locking test according to an embodiment of the present invention.

[0026] Figure 8 This is a 0-8 point acceleration time history curve of TMD locking simulation according to an embodiment of the present invention.

[0027] Fig. 9 This is a 0-8 point acceleration time history curve of the TMD release test according to an embodiment of the present invention.

[0028] Fig.10 This is a 0-8 point acceleration time history curve of TMD release simulation according to an embodiment of the present invention.

[0029] Fig.11 This is the acceleration time history curve of the TMD locking test at point 0 and layers 1-9 in an embodiment of the present invention.

[0030] Fig.12 This is the acceleration time history curve of the TMD locking simulation at point 0 and layers 1-9 according to an embodiment of the present invention.

[0031] Fig.13 This is the acceleration time history curve of the TMD release test at point 0 and layers 1-9 in an embodiment of the present invention.

[0032] Fig.14 This is the acceleration time history curve of the 1-9 layers at 0 point in the TMD release simulation according to an embodiment of the present invention.

[0033] Fig.15 Schematic diagram of the vibration exceeding the limit range of the equipment on the same floor after the TMD is released according to an embodiment of the present invention.

[0034] Fig.16 Schematic diagram of the vibration limit range of the interlayer equipment before and after the TMD release according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described in further detail below.

[0036] A vibration response interlayer transmission test method considering TMD setting can analyze the changes in the vibration response transmission law before and after the installation of TMD release, and can be used to guide the division of production operations and daily office areas. Figure 1 As shown, the following steps are included:

[0037] S1. According to the actual structural conditions, design a TMD device that meets the working conditions. After installation, lock the TMD so that it does not participate in the work, and conduct the same-layer and inter-layer vibration response test under the excitation of the equipment.

[0038] S2. Release TMD to make it work and conduct same-layer and inter-layer vibration response tests under equipment excitation.

[0039] S3. Establish a finite element model, set up the TMD device under the same working conditions, and arrange the same equipment vibration excitation at the same position to simulate the same-layer and inter-layer vibration before and after TMD release.

[0040] S4. Compare the test results with the finite element simulation results to verify the accuracy of the test method.

[0041] S5. Based on the test data, provide suggestions for functional zoning within the structure.

[0042] Furthermore, step S1 is specifically as follows:

[0043] According to the floor plan diagram of each floor of the plant to be tested, for the floor where TMD needs to be set, set TMD in the middle of the floor, lock TMD so that it does not work, and perform vibration excitation on the equipment at the TMD setting location; on the floor where TMD is set, set the 1st test point, the 2nd test point... the 8th test point (hereinafter referred to as point 1, point 2... point 8) outward in sequence on at least one side of the TMD setting location (point 0), collect the vibration acceleration time history curves of the floor at the TMD setting location and the 1st test point to the nth test point, and collect the vibration acceleration time history curves of the remaining floors at the same position at the corresponding TMD setting location. Figure 2 is a schematic diagram of a floor plan of an arbitrary structure in the actual structure. The TMD is arranged in the middle of the floor, such as Figure 2 The 0 point position, Figure 3 for Figure 2 Schematic diagram of the 1-1 cross-section in the plan view. Lock the TMD so that it does not work, excite the device at point 0, collect the vibration acceleration time history curves of points 0-8 of the device excitation layer, and collect the vibration acceleration time history curves of points 0 of the remaining layers at the same time.

[0044] Step S2 specifically includes: releasing the TMD to make it work, performing device excitation at point 0, collecting the vibration acceleration time history curves of points 0-8 of the device excitation layer, and collecting the vibration acceleration time history curves of point 0 of the remaining layers.

[0045] Step S3 is specifically as follows: establish an overall structural finite element model, and use Madis software to establish an overall structural finite element model of a high-rise industrial plant, such as Figure 4 As shown. In the modeling of steel tube concrete, the steel tube adopts "shell unit" (the material property assignment is "from bottom to top"), and the concrete adopts "solid unit" (the material property assignment is "from neutral axis to both ends"). The contact between the steel tube and the concrete is set to "hard contact" and "friction contact", and the "penalty" is set to 0.4; the steel beam and the structural column adopt the "beam unit" in the "line unit"; the floor slab and the shear wall adopt the "solid unit"; the steel tube and concrete constraints in the steel tube concrete are set to "shell unit and solid unit" constraints, and the other contacts are "binding" constraints; the bottom boundary condition is consolidation. The equipment load and TMD device parameters are set to be consistent with the equipment load and TMD device parameters in the actual structure in S1 and S2. For the setting of TMD parameters, see Figure 5 , equipment load time history curve see Figure 6 The finite element simulation is consistent with the test conditions, simulating the 0-point equipment excitation, 0-8 points and the vibration of each layer 0 point under TMD locking and release conditions.

[0046] Step S4 is specifically as follows:

[0047] When TMD is locked, the test results of the acceleration time history curve at points 0-8 are as follows: Figure 7 As shown, the simulation result structure is as follows Figure 8 As shown; when TMD is released, the test results of the acceleration time history curve at points 0-8 are as follows Fig. 9 As shown, the simulation result structure is as follows Fig.10 As shown; when TMD is locked, the acceleration time history curve test results of 0 point of 1-9 layers are as follows Fig.11 As shown, the simulation result structure is as follows Fig.12 As shown; when TMD is released, the acceleration time history curve test results of 0 point of 1-9 layers are as follows Fig.13 As shown, the simulation result structure is as follows Fig.14 As shown; by comparing the finite element simulation with the test results of step S1 and step S2, the accuracy of the test method can be verified, and then the vibration response transmission law can be analyzed based on the test data. In this embodiment, the test data is accurate through verification.

[0048] Step S5 is specifically as follows: Fig.15 According to the verified test data, the area where the vibration response exceeds the limit after TMD release can be analyzed. The circle is the vibration limit range with the excitation source d1 set at 0 point as the radius when TMD is released; therefore, according to the test data on the same floor, it can be concluded that the daily office area cannot be arranged within a certain range of the equipment layout location to avoid affecting the health of personnel.

[0049] like Fig.16 As shown in the figure, according to the verified test data, point 0 is the position of the excitation source. When TMD is released, the circle at the projection position of the remaining layers is the vibration limit-exceeding area. Since TMD is set on some floors, the vibration response of these floors is attenuated more, and the reduction rate of the limit range is greater than that of the adjacent floors. For floors without TMD, the vibration response is attenuated less, and the reduction rate of the limit range is smaller than that of the adjacent floors.

[0050] It can be seen that the vibration limit range of the layer where the equipment is excited and the remaining layers can be determined based on the test data, so as to reasonably divide the production operation and daily office areas, so that the physical and mental health of people in the structure will not be affected by vibration.

[0051] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A vibration response interlayer transmission test method considering TMD setting, characterized in that: It includes the following steps: Step S1, according to the actual structure of the plant, select a TMD device that meets the working conditions, set the TMD in the plant, lock the TMD so that it does not participate in the work, and perform the same-layer and inter-layer vibration response test under the vibration excitation of the equipment; Step S2, releasing the TMD to make it participate in the work, and conducting the same-layer and inter-layer vibration response test under the vibration excitation of the equipment; and analyzing the transmission law of the vibration response based on the obtained data.

2. The vibration response interlayer transmission test method considering TMD setting according to claim 1, characterized in that: Step S1 includes: according to the plan of each floor of the factory building to be tested, for the floor where TMD needs to be set, the TMD is set in the middle of the floor, the TMD is locked so that it does not work, and the equipment vibration excitation is performed at the TMD setting location; on the floor where the TMD is set, at least one side of the TMD setting location sequentially sets the first test point, the second test point...the nth test point outward, collects the vibration acceleration time history curves of the floor at the TMD setting location and the first test point to the nth test point, and at the same time collects the vibration acceleration time history curves of the remaining floors at the same position of the corresponding TMD setting location.

3. The vibration response interlayer transfer test method considering TMD setting according to claim 2, characterized in that: Step S2 includes: releasing the TMD to make it work, performing vibration excitation of the equipment at the TMD setting, collecting the vibration acceleration time history curves of the equipment vibration excitation layer at the TMD setting and the 1st test point to the nth test point, and at the same time collecting the vibration acceleration time history curves of the remaining layers at the same position at the corresponding TMD setting.

4. The vibration response interlayer transmission test method considering TMD setting according to claim 1, characterized in that: Also includes: Step S3, establishing a finite element model, setting a TMD device at the same position and the same working condition as in step S1, and setting the same equipment vibration excitation at the same position, and performing the same-layer and inter-layer vibration simulation before and after the TMD release; Step S4, comparing the test result obtained in step S2 with the finite element simulation result obtained in step S3 to verify the accuracy of the test method.

5. The vibration response interlayer transmission test method considering TMD setting according to claim 4, characterized in that: In step S3, the Madis software is used to establish the overall structural finite element model of the high-rise industrial plant; in the modeling of steel tube concrete, the steel tube adopts "shell unit", and the material property assignment is selected as "from bottom to top"; the concrete adopts "solid unit", and the material property assignment is selected as "from neutral axis to both ends"; the contact between the steel tube and concrete is set to "hard contact" and "friction contact", and the "penalty" is set to 0.4; the steel beam and the structural column adopt "beam unit" in "line unit"; the floor slab and shear wall adopt "solid unit"; the steel tube and concrete constraint in the steel tube concrete is set to "shell unit and solid unit" constraint, and the other contacts involved are "binding" constraints; the bottom boundary condition is consolidation; The equipment load and TMD device parameters are consistent with those in the actual structure in step S1 and step S2.

6. Application of the vibration response interlayer transmission test method considering TMD setting according to any one of claims 1 to 5, characterized in that: According to the transmission law of the obtained vibration response, suggestions for functional zoning within the factory building structure are given.

7. Application of the vibration response interlayer transfer test method considering TMD setting according to claim 6, characterized in that: According to the transmission law analysis of the obtained vibration response, the areas where the vibration response of each floor of the factory building exceeds the limit after the TMD is released are obtained, so as to divide the production operation area and the daily office area.

Images