CN209011214U - A kind of TMD damping cisten mechanism - Google Patents
A kind of TMD damping cisten mechanism Download PDFInfo
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- CN209011214U CN209011214U CN201821094575.4U CN201821094575U CN209011214U CN 209011214 U CN209011214 U CN 209011214U CN 201821094575 U CN201821094575 U CN 201821094575U CN 209011214 U CN209011214 U CN 209011214U
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- 238000013016 damping Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 title abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 230000035939 shock Effects 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 9
- 238000001228 spectrum Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 108010070880 sigma K Proteins 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000026676 system process Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
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Abstract
The utility model provides a kind of TMD (Tuned Mass Damper, tuned mass damper) damping cisten mechanism, including water tank and the buttress being arranged on the bottom plate of the water tank；Wherein, the tuned frequency of the buttressWherein, ∑ K is the global stiffness of all buttresses, and M is the water tank gross mass, the quality for water of including the water tank self-weight and wherein getting excited with.It is constant that a kind of standard design that TMD damping cisten mechanism can keep original a full set of is provided by the utility model, only do a small amount of change in part, additional economic cost is extremely limited, but will not bring underground piping caused by additional relative displacement be broken the problem of, improve the anti-seismic performance of nuclear power workshop.
Description
Technical Field
The utility model relates to a TMD shock attenuation water tank structure (TMD is Tuned Mass Damper promptly), harmonious Mass Damper.
Background
In a nuclear power plant, various water tanks with large weight are arranged at different positions of a factory building according to the requirements of a process system. In the nuclear power plant anti-seismic design, the improvement of the anti-seismic design capability of system process equipment in a plurality of nuclear islands is very difficult at present. Therefore, on the premise of not changing the standard design of the original nuclear island structure and the whole set of internal facilities, the anti-seismic performance of the nuclear power plant is improved, the shock absorption effect is achieved, namely, a TMD (Tuned Mass Damper) shock absorption system can be formed without additional Mass, the original function of the water tank is kept, and the anti-seismic performance of the nuclear power plant is improved. The problem to be solved is to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a TMD damping water tank structure aiming at the defects of the prior art, which is characterized in that the TMD damping water tank structure comprises a water tank and a buttress arranged on the bottom plate of the water tank; wherein,
tuning frequency of said buttress
And M is the total mass of the water tank, including the sum of the self weight of the water tank and the mass of the flushing water in the water tank.
Preferably, the buttress is in a structural form of a steel pipe column or a steel pipe concrete buttress.
Preferably, the height and the number of the buttresses can be freely selected according to actual conditions.
Preferably, the cross section of each pier is designed according to the total rigidity divided by the number of the piers.
Preferably, a stiffening beam is further arranged on the water tank.
Preferably, the TMD damping water tank structure is applied to a third-generation nuclear power plant in a medium and high earthquake risk area.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the earthquake-resistant design of the nuclear power plant is restricted by a strict standard system, and taking the earthquake-resistant design of the current three-generation nuclear power plant as an example, the input level and the vertical direction of the earthquake design popular in the world are both 0.25 g-0.30 g. Therefore, if the seismic input exceeds 0.30g in a middle and high seismic risk area (indicating that the horizontal direction is 0.30-0.45 g and the vertical direction is 2/3), the method is unsafe without technical measures. One of effectual technical measure adopts basic shock insulation technique, and its shock attenuation efficiency can improve, but it brings the nuclear island relative displacement simultaneously great, and this can increase the risk that underground piping breaks, nevertheless adopts the utility model provides a TMD shock attenuation water tank structure can keep former complete standard design unchangeable, only does local a small amount of changes, and additional economic cost is very limited, can not bring the problem that the underground piping that additional relative displacement leads to breaks again.
2. The quality piece of usual TMD technique is extra additional in the design, and the utility model provides a quality piece of TMD shock attenuation water tank structure directly utilizes the water tank structure that just exists originally, realizes the water tank function pluralism, and to a great extent is saved because the produced engineering cost of additional TMD, and the construction is simple, and application scope is wider.
Drawings
Fig. 1 is one of the schematic diagrams of the TMD damping water tank structure provided by the present invention.
Fig. 2 is a second schematic view of the TMD damping water tank structure provided by the present invention.
1-a water tank;
2-buttress;
and 3, stiffening the beam.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and 2, a TMD damping water tank structure is characterized by comprising a water tank 1 and buttresses 2 arranged on the bottom plate of the water tank 1; wherein,
tuning frequency of said pier 2
Wherein, Σ K is the total stiffness of all the buttresses 2, and M is the total mass of the water tank 1, including the sum of the self-weight of the water tank and the mass of the flushing water therein.
The action mechanism of the tuned mass damper TMD technology is that a system consisting of an elastic element of mass block tuning frequency and a damping element dissipating structural vibration energy is added to a structure, when the structure vibrates under the action of earthquake, the mass block of the TMD generates vibration with a phase different from that of the structure, and therefore the vibration of the structure can be reduced.
In a nuclear power plant, various water tanks with large weight are arranged at different positions of a factory building according to the requirements of a process system. The utility model provides a TMD shock attenuation water tank structure breaks away from these water tanks from roof or floor surface to a plurality of special buttress of design link to each other with major structure, then can constitute water tank TMD system, exert the absorbing effect of energy dissipation simultaneously under the prerequisite that satisfies the process systems design demand. The TMD damping water tank structure is connected with a main body structure through a buttress with a special design, and the rigidity of the buttress and the corresponding structural form and arrangement mode of the buttress are determined according to specific damping requirements so as to realize required tuning frequency. The TMD damping water tank structure can form a TMD damping system without additional mass, not only keeps the original functions of the water tank, but also improves the anti-seismic performance of nuclear power plants.
In order to lift and separate the whole water tank in the nuclear power plant room, the shape and the size of the original water tank are kept unchanged, an independent water tank bottom plate is additionally designed, and a certain number of proper buttresses are arranged on the position of the water tank bottom plate, so that a water tank TMD system can be formed.
The key of the technology is to reasonably select the tuning frequency of the buttress, and the value is mainly controlled by the rigidity of the designed buttress, namely the tuning frequency is as follows:
in the formula, sigma K is the total rigidity of all the buttresses, and M is the total mass of the water tank, including the sum of the self weight of the water tank body and the mass of the flushing water in the water tank body.
In the nuclear power plant anti-seismic design, the improvement of the anti-seismic design capability of system process equipment in a plurality of nuclear islands is very difficult at present. Therefore, the patent of the utility model mainly realizes the following aims: the reaction spectrum of each floor calculated by adopting the nuclear island structure of the TMD water tank under the condition that the earthquake design input of a third-generation nuclear power plant is improved by a certain amplitude compared with the original standard design can be enveloped by the reaction spectrum of the floor used by the original standard design. For this reason, the horizontal tuning frequency of the technology of this patent is the main control frequency in the horizontal direction of the floor spectrum, and in the design of the nuclear power plant, it is not necessarily the horizontal fundamental frequency of the nuclear island plant.
Tuning frequency fsAfter selection, the nuclear island model is simplified into a double-particle system, and the design frequency f of the water tank buttress can be determinedsAnd the frequency f of the main structure, the total rigidity value of the water tank buttress can be obtained from the formula: sigma K ═ fs 2×4×π2×M。
The buttress design can select the structural form of a steel pipe column or a steel pipe concrete buttress according to specific requirements. From the installation and maintenance point of view, the height T of the buttress and the number n of the buttress can be determined, and then the section of each buttress is designed according to the required total rigidity divided by n.
Preferably, the buttress 2 is in the structural form of a steel pipe column or a steel pipe concrete buttress.
Preferably, the height and number of the piers 2 can be freely selected according to actual conditions.
Preferably, the section of each pier is designed according to the total stiffness divided by the number of said piers 2.
Preferably, a stiffening beam 3 is further provided on the water tank 1.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the earthquake-resistant design of the nuclear power plant is restricted by a strict standard system, and taking the earthquake-resistant design of the current three-generation nuclear power plant as an example, the input level and the vertical direction of the earthquake design popular in the world are both 0.25 g-0.30 g. Therefore, if the seismic input exceeds 0.30g in a middle and high seismic risk area (indicating that the horizontal direction is 0.30-0.45 g and the vertical direction is 2/3), the method is unsafe without technical measures. One of effectual technical measure adopts basic shock insulation technique, and its shock attenuation efficiency can improve, but it brings the nuclear island relative displacement simultaneously great, and this can increase the risk that underground piping breaks, nevertheless adopts the utility model provides a TMD shock attenuation water tank structure can keep former complete standard design unchangeable, only does local a small amount of changes, and additional economic cost is very limited, can not bring the problem that the underground piping that additional relative displacement leads to breaks again.
2. The quality piece of usual TMD technique is extra additional in the design, and the utility model provides a quality piece of TMD shock attenuation water tank structure directly utilizes the water tank structure that just exists originally, realizes the water tank function pluralism, and to a great extent is saved because the produced engineering cost of additional TMD, and the construction is simple, and application scope is wider.
Furthermore, be worth reminding the utility model provides a TMD shock attenuation water tank structure adopts TMD shock attenuation theory to make superstructure's earthquake load (acceleration) effectively reduce. In specific nuclear power plant's antidetonation design, the absorbing range target relies on the reasonable trade-off of the selection of horizontal tuned frequency and the engineering design means of buttress, and the utility model provides an in the TMD shock attenuation water tank structure to the promotion of nuclear power plant shock resistance in order to keep the original antidetonation standard design of numerous important nuclear facilities in the factory not to become the control objective. This is the most practical criterion for the accumulation of design experience in nuclear power engineering. The shock-absorbing coefficient's that is relevant with the shock attenuation effect is confirmed not the utility model provides an it is important among the TMD shock attenuation water tank structure to relate to. Although in the conventional civil engineering design market, the TMD damping technology only takes the reduction of the shear force of the building base as a standard, the damping coefficient can reach more than 50% after additional technical measures are adopted according to the records of relevant documents. However, the earthquake-proof damping of the nuclear power plant has strict regulation system restriction, the adoption of a simple, mature and reliable technology is advocated without pursuing the advancement of theoretical indexes, the specific aim of the technology is to control the floor reaction spectrum designed by a plurality of devices to be enveloped by the floor design reaction spectrum designed by the original standard, and the technology is just the little attention paid to the traditional TMD damping technology.
Generally, the master control frequencies in two horizontal directions of the nuclear island structure are inconsistent, and no matter which tuning frequency is selected, the adjustment effect of the floor spectrum amplitude is finally used as a judgment basis. In addition, according to the international nuclear engineering analysis standard, the technology advocates that at least more than five groups of different earthquake time courses are input, tuning frequency is adjusted by more than +/-5%, different models are established for analysis, and the final analysis result is good when the average value of multiple groups of variables is taken as the design basis.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It will be apparent to those skilled in the art that various changes and modifications may be made to the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A TMD shock attenuation water tank structure, characterized by that, including water tank and buttress set up on the bottom plate of the said water tank; wherein,
tuning frequency of said buttress
And M is the total mass of the water tank, including the sum of the self weight of the water tank and the mass of the flushing water in the water tank.
2. The TMD shock absorption water tank structure according to claim 1, wherein the buttress is in the form of a steel pipe column or a steel pipe concrete buttress.
3. The TMD damping water tank structure according to claim 1, wherein the height and number of the piers can be freely selected according to actual circumstances.
4. The TMD damper water tank structure according to claim 1, wherein the cross section of each buttress is designed based on the total stiffness of the buttress divided by the number.
5. The TMD damped water tank structure as set forth in claim 1, wherein a stiffening beam is further provided on said water tank.
6. The TMD shock absorbing water tank structure of claim 1, wherein the TMD shock absorbing water tank structure is applied to a third generation nuclear power plant in a medium to high earthquake risk area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821094575.4U CN209011214U (en) | 2018-07-11 | 2018-07-11 | A kind of TMD damping cisten mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821094575.4U CN209011214U (en) | 2018-07-11 | 2018-07-11 | A kind of TMD damping cisten mechanism |
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| Publication Number | Publication Date |
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| CN209011214U true CN209011214U (en) | 2019-06-21 |
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| CN201821094575.4U Active CN209011214U (en) | 2018-07-11 | 2018-07-11 | A kind of TMD damping cisten mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589839A (en) * | 2018-07-11 | 2018-09-28 | 上海核工程研究设计院有限公司 | A kind of TMD dampings cisten mechanism |
| CN110500375A (en) * | 2019-08-28 | 2019-11-26 | 上海核工程研究设计院有限公司 | A kind of TLMD vibration insulating system |
-
2018
- 2018-07-11 CN CN201821094575.4U patent/CN209011214U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589839A (en) * | 2018-07-11 | 2018-09-28 | 上海核工程研究设计院有限公司 | A kind of TMD dampings cisten mechanism |
| CN110500375A (en) * | 2019-08-28 | 2019-11-26 | 上海核工程研究设计院有限公司 | A kind of TLMD vibration insulating system |
| CN110500375B (en) * | 2019-08-28 | 2022-05-10 | 上海核工程研究设计院有限公司 | TLMD vibration reduction system |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
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