CN108035598B - Semi-active/passive hybrid damping device - Google Patents
Semi-active/passive hybrid damping device Download PDFInfo
- Publication number
- CN108035598B CN108035598B CN201711361481.9A CN201711361481A CN108035598B CN 108035598 B CN108035598 B CN 108035598B CN 201711361481 A CN201711361481 A CN 201711361481A CN 108035598 B CN108035598 B CN 108035598B
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- pressing plate
- nut
- plate
- fixing screw
- sliding
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- 238000013016 damping Methods 0.000 title claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 238000005265 energy consumption Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000006870 function Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 abstract description 2
- 230000035939 shock Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
A semi-active/passive hybrid damping device mainly comprises an upper pressing plate, a lower pressing plate, a sliding plate, a connecting plate, a first fixing screw, a second fixing screw, a fixing rod, a shape memory alloy wire, an annular piezoelectric ceramic driver and the like, wherein the first fixing screw passes through the upper pressing plate, the connecting plate and the lower pressing plate, and the second fixing screw passes through the upper pressing plate, the sliding plate and the lower pressing plate; the upper and lower fixing screws are fixed with the upper and lower pressing plates through nuts, gaskets are arranged between the nuts and the lower pressing plates, annular piezoelectric ceramic drivers are respectively arranged below the nuts at the upper sides of two ends of the damping device, fixing rod sliding grooves are respectively reserved on the upper and lower pressing plates, the fixing rods penetrate through the sliding grooves and are fixed with the sliding plates, and two sliding grooves capable of freely moving are reserved on the right sides of the sliding plates. SMA wires are symmetrically arranged between the first fixing screw and the fixing rod and between the fixing rod and the second fixing screw at the upper side and the lower side respectively. The invention has the advantages of resettable, less components, light weight, simple and small structure, stable performance and convenient large-scale installation and application.
Description
Technical Field
The invention belongs to the technical field of structural vibration control, and particularly relates to a semi-active/passive hybrid damping device.
Background
The piezoelectric friction damper is a hot spot for researching the field of structural vibration control in recent years, but is limited to the deformation characteristic of a piezoelectric driver, and generally needs to apply larger initial pressure to better restrict piezoelectric ceramics, so that the piezoelectric friction damper is likely to fail in small earthquake because a friction surface is difficult to slide; on the one hand, the deformation of the piezoelectric ceramics cannot be well restrained when the pre-pressure is smaller, on the other hand, the participation of initial friction force is not realized, and the output force cannot meet the energy consumption requirement in the earthquake; the shape memory alloy material can provide full hysteresis curves, has no residual deformation after unloading, and has stable performance and strong energy consumption capability. The hybrid damping device made of the SMA and the piezoelectric material can effectively improve the energy consumption capability of the piezoelectric friction device when the piezoelectric friction device is used independently, and the control force is adjustable. Publication No.: CN101851963A and CN105971357A are respectively provided with a shock absorption device with SMA and piezoelectric combination, wherein the shock absorption device is large in size, is mainly used for basic shock insulation and is small in application range; the latter has complex structure, more components and high manufacturing cost.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a semi-active/passive hybrid damping device which has the advantages of small size, simple structure, definite force transmission, stable performance and the like.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a semi-active/passive hybrid damping device mainly comprises an upper pressing plate 4, a lower pressing plate 5, a sliding plate 10, a connecting plate 11, a first fixing screw 1, a second fixing screw 2, a first fixing rod 3, a first SMA wire 6, a second SMA wire 7 and an annular piezoelectric ceramic driver 8, wherein the connecting plate 11 is used as a fixed end to be connected with an external structure, the sliding plate 10 and the connecting plate 11 are positioned between the upper pressing plate 4 and the lower pressing plate 5, the upper pressing plate 4 and the lower pressing plate 5 are respectively provided with a first sliding groove 12, the fixing rod 3 penetrates through the first sliding grooves 12 to be fixed with the sliding plate 10 so that the sliding plate 10 moves along the axis of the damping device, the sliding plate 10 is provided with a second sliding groove 13 which is consistent with the length direction of the first sliding grooves 12, the first fixing screw 1 penetrates through the upper pressing plate 4, the connecting plate 11 and the lower pressing plate 5 in sequence, the upper end is fixed by adopting a first nut 91, and the lower end is fixed by adopting a second nut 92, the fixing screw rod II 2 sequentially passes through the upper pressing plate 4, the sliding groove II 13 and the lower pressing plate 5, the upper end is fixed by adopting the nut III 93, the lower end is fixed by adopting the nut IV 94, the fixing screw rod I1 and the fixing screw rod II 2 are respectively positioned on the left side and the right side of the fixing rod 3, the SMA wire I6 is arranged between the fixing screw rod I1 and the fixing rod 3 in an up-down symmetrical way, the SMA wire II 7 is arranged between the fixing rod 3 and the fixing screw rod II 2 in an up-down symmetrical way, the two annular piezoelectric ceramic drivers 8 are respectively arranged on the fixing screw rod I1 and the fixing screw rod II 2, the two annular piezoelectric ceramic drivers 8 are positioned between the upper pressing plate 4, the nut I91 and the upper pressing plate 4 and the nut III 93, the pre-pressing force between the upper pressing plate 4, the lower pressing plate 5 and the sliding plate 10 is adjusted by adjusting the annular piezoelectric ceramic drivers 8.
The connecting rod 11 and the end of the sliding plate 10 are respectively provided with a connecting hole 14 for connecting with an external structure or member.
The two ends of the first SMA wire 6 and the second SMA wire 7 are fixed by clamps, and the SMA wires have the functions of energy consumption and resetting.
Gaskets are arranged between the second nut 92 and the fourth nut 94 and the lower pressing plate 5, gaskets are arranged between the annular piezoelectric ceramic driver 8 and the first nut 91 and between the annular piezoelectric ceramic driver 93 and the third nut 93, and gaskets are arranged between the first nut 91 and the third nut 93 and between the annular piezoelectric ceramic driver and the upper pressing plate 4. The gasket and the washer ensure that the contact surfaces among the annular piezoelectric ceramic driver 8, the nut 9 and the upper and lower pressing plates are uniformly stressed.
The quantity, the length and the diameter of the first SMA wire 6 and the second SMA wire 7 are equal to ensure the consistency of the left restoring force and the right restoring force.
The sliding plate 10 and the connecting plate 11 are positioned at the same height.
In the invention, the connecting plate 11 is fixed with the upper pressing plate and the lower pressing plate through the first fixing screw 1 and is connected with an external structure as a fixed end, and the bolt connection can enable the damping device main body and the connecting section to rotate to a certain extent during an earthquake, so that the damping device is prevented from being damaged by transverse external force.
When vibration occurs, the sliding plate 10 starts to move, at this time, friction energy consumption occurs between the sliding plate 10 and the upper and lower pressing plates, and at the same time, one tension energy consumption exists between the SMA wire one 6 and the SMA wire two 7. And the control force of the damping device can be regulated in real time by changing the input voltage of the piezoelectric driver 8, and when the power system fails, the SMA wire can still better play the role of energy consumption and damping.
Compared with the prior art, the invention has the advantages that: the assembly is less, the structure is simple, the size is small, the processing cost is low, and the large-scale installation and use are convenient; compared with the box-type and cylinder-type SMA piezoelectric hybrid damping device, the SMA wire and the piezoelectric material are arranged on the outer side of the damping device main body, so that the split-type and cylinder-type SMA piezoelectric hybrid damping device is convenient to detach and replace, and low in later maintenance cost.
Drawings
Fig. 1 is a three-dimensional perspective view of a semi-active/passive hybrid shock absorbing device according to the present invention.
Fig. 2 is a front view of the semi-active/passive hybrid shock absorbing device according to the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, a semi-active/passive hybrid damping device mainly comprises an upper pressing plate 4, a lower pressing plate 5, a sliding plate 10, a connecting plate 11, a first fixing screw 1, a second fixing screw 2, a fixing rod 3, a first SMA wire 6, a second SMA wire 7 and an annular piezoelectric ceramic driver 8.
The first fixing screw rod 1 sequentially penetrates through the upper pressing plate 4, the connecting plate 11 and the lower pressing plate 5, the upper end is fixed by a first nut 91, the lower end is fixed by a second nut 92, the second fixing screw rod 2 sequentially penetrates through the upper pressing plate 4, the second sliding groove 13 and the lower pressing plate 5, the upper end is fixed by a third nut 93, and the lower end is fixed by a fourth nut 94.
Two annular piezoceramic actuators 8 are respectively arranged on the first fixing screw 1 and the second fixing screw 2 and are positioned between the upper pressing plate 4 and the first nut 91 and between the upper pressing plate 4 and the third nut 93. Gaskets are arranged between the second nut 92, the fourth nut 94 and the lower pressing plate 5, gaskets are arranged between the annular piezoelectric ceramic driver 8 and the first nut 91, gaskets are arranged between the third nut 93, and gaskets are arranged between the first nut 91, the third nut 93 and the upper pressing plate 4. The gasket and the washer ensure that the contact surfaces among the annular piezoelectric ceramic driver 8, the nut 9 and the upper and lower pressing plates are uniformly stressed.
Adjusting the voltage of the annular piezoceramic actuator 8 can change the friction between the pressure plate and the sliding plate 10. The connection plates 11 and the ends of the sliding plates 10 are respectively provided with connection holes 14 for connection with external structures or members. The upper pressing plate and the lower pressing plate are respectively provided with a first fixed rod sliding groove 12, the fixed rod 3 passes through the first sliding groove 12 to be fixed with the sliding plate 10, and a second sliding groove 13 is arranged on the right side of the sliding plate 10.
The connecting plate 11 is used as a fixed end and is connected with an external structure, and is fixed with the upper pressing plate and the lower pressing plate through the first fixing screw 1 by adopting the nuts 9, and the bolt connection can enable the damping device main body and the connecting section to rotate to a certain extent during an earthquake so as to prevent the damping device from being damaged when being subjected to transverse external force.
And an SMA wire I6 is vertically symmetrically arranged between the fixed screw I1 and the fixed rod 3, an SMA wire II 7 is vertically symmetrically arranged between the fixed rod 3 and the fixed screw II 2, and two ends of the SMA wire are fixed by using clamps. And determining the number of SMA wires and the pre-strain according to the calculation. The pre-pressure between the pressing plate and the sliding plate 10 can be adjusted by screwing the lower side nut 9 on the fixing screw with a torque wrench, and the pre-pressure can be determined according to the requirement.
The sliding plate 10 is integrated with the fixed rod 3, and the upper and lower pressing plates are integrated with the fixed screw 1 and the fixed screw 2. When the sliding plate 10 slides, the fixing rod 3 can slide freely in the first sliding groove 12 of the upper and lower pressing plates, and the fixing screw can move left and right in the reserved empty groove 13 of the sliding plate. And the fixed rod 3 and the second sliding groove 13 ensure that the sliding plate 10 moves along the axle center of the damping device.
Claims (1)
1. The semi-active/passive hybrid damping device consists of an upper pressing plate (4), a lower pressing plate (5), a sliding plate (10), a connecting plate (11), a first fixing screw rod (1), a second fixing screw rod (2), a fixing rod (3), a first SMA wire (6), a second SMA wire (7) and an annular piezoelectric ceramic driver (8), wherein the connecting plate (11) is connected with an external structure as a fixed end, the semi-active/passive hybrid damping device is characterized in that the sliding plate (10) and the connecting plate (11) are positioned between the upper pressing plate (4) and the lower pressing plate (5), the upper pressing plate (4) and the lower pressing plate (5) are both provided with a first sliding groove (12), the fixing rod (3) penetrates through the first sliding groove (12) and is fixed with the sliding plate (10) to enable the sliding plate (10) to move along the axis of the damping device, the sliding plate (10) is provided with a second sliding groove (13) consistent with the length direction of the first sliding groove (12), the first fixing screw rod (1) sequentially penetrates through the upper pressing plate (4), the connecting plate (11) and the lower pressing plate (5), the upper end is fixed by a first nut (91), the lower end is fixed by a nut (2), the lower end is fixed by a second nut (92), the upper end is sequentially fixed by the second nut (2), the upper end is fixed by the lower end by the second nut (93) and the upper end is sequentially penetrates through the upper end (3) and the lower end (93), the fixing screw I (1) and the fixing screw II (2) are respectively positioned at the left side and the right side of the fixing rod (3), the SMA wire I (6) is vertically and symmetrically arranged between the fixing screw I (1) and the fixing rod (3), the SMA wire II (7) is vertically and symmetrically arranged between the fixing rod (3) and the fixing screw II (2), the two annular piezoelectric ceramic drivers (8) are respectively arranged on the fixing screw I (1) and the fixing screw II (2), and are positioned between the upper pressing plate (4) and the first nut (91) and between the upper pressing plate (4) and the third nut (93), the pre-pressure between the upper pressing plate (4), the lower pressing plate (5) and the sliding plate (10) is regulated through regulating the nut II (92) and the nut IV (94), and the friction force between the upper pressing plate (4), the lower pressing plate (5) and the sliding plate (10) is changed through regulating the annular piezoelectric ceramic drivers (8).
The connecting plate (11) and the end part of the sliding plate (10) are respectively provided with a connecting hole (14) for connecting with an external structure or member;
both ends of the first SMA wire (6) and the second SMA wire (7) are fixed by clamps, and the SMA wires have the functions of energy consumption and resetting;
gaskets are arranged between the second nut (92) and the fourth nut (94) and the lower pressing plate (5), gaskets are arranged between the annular piezoelectric ceramic driver (8) and the first nut (91) and the third nut (93), and gaskets are arranged between the first nut (91) and the third nut (93) and the upper pressing plate (4);
the number, the length and the diameter of the first SMA wire (6) and the second SMA wire (7) are equal to each other so as to ensure the consistency of left and right restoring forces;
the sliding plate (10) and the connecting plate (11) are positioned at the same height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711361481.9A CN108035598B (en) | 2017-12-18 | 2017-12-18 | Semi-active/passive hybrid damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711361481.9A CN108035598B (en) | 2017-12-18 | 2017-12-18 | Semi-active/passive hybrid damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108035598A CN108035598A (en) | 2018-05-15 |
| CN108035598B true CN108035598B (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711361481.9A Active CN108035598B (en) | 2017-12-18 | 2017-12-18 | Semi-active/passive hybrid damping device |
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| Country | Link |
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| CN (1) | CN108035598B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939137A (en) * | 2017-12-27 | 2018-04-20 | 华侨大学 | A kind of marmem piezoelectric friction damper device |
| CN108442557B (en) * | 2018-05-21 | 2023-12-26 | 黄淮学院 | Double-slider piezoelectric SMA composite damping device |
| CN108729568B (en) * | 2018-05-21 | 2024-01-12 | 黄淮学院 | Box type serial SMA friction composite damper |
| CN110777959A (en) * | 2019-11-13 | 2020-02-11 | 长安大学 | Node semi-active damping control device with strengthening-variable friction energy dissipation function |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010399A1 (en) * | 2003-07-22 | 2005-02-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Modular interface for damping mechanical vibrations |
| WO2006126896A1 (en) * | 2005-05-24 | 2006-11-30 | Geoffrey John Thompson | Energy-absorbing and force-limiting friction coupling |
| CN201027352Y (en) * | 2007-04-06 | 2008-02-27 | 大连理工大学 | Self-reset hyperelastic shape memory alloy deoscillator |
| CN201037277Y (en) * | 2007-04-06 | 2008-03-19 | 大连理工大学 | Energy dissipation-reposition shape memory alloy damper |
| JP2009041585A (en) * | 2007-08-06 | 2009-02-26 | Shimizu Corp | Friction damper |
| JP3154894U (en) * | 2009-08-18 | 2009-10-29 | 一品國際科技股▲ふん▼有限公司 | Lens drive device |
| CN101851963A (en) * | 2010-06-23 | 2010-10-06 | 湖南大学 | Piezoelectric-SMA composite variable friction intelligent damper |
| KR20120013113A (en) * | 2010-08-04 | 2012-02-14 | 성균관대학교산학협력단 | Smart self-maintenance system for railroad tracks |
| CN104763069A (en) * | 2015-03-27 | 2015-07-08 | 燕山大学 | SMA-piezoelectric frictional combined damper |
| DE102015103105A1 (en) * | 2014-03-11 | 2015-09-17 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | SYSTEM WITH DAMPER-CONTROLLED SWITCH FOR MOTION CONTROL OF A SHAPED MEMBRANE ALLOY ACTUATOR |
| CN105201099A (en) * | 2015-10-26 | 2015-12-30 | 西安建筑科技大学 | SMA piezoelectric friction intelligent mixed damper |
| CN105350679A (en) * | 2015-12-15 | 2016-02-24 | 西安建筑科技大学 | Reset type SMA piezoelectricity-friction mixed damper |
| CN105672515A (en) * | 2016-03-10 | 2016-06-15 | 苏州科技学院 | Magnetic shape memory alloy restraining friction damper with self-reset function |
| KR20160086664A (en) * | 2015-01-12 | 2016-07-20 | 인천대학교 산학협력단 | Energy dissipation damper of original form restoration |
| CN207647271U (en) * | 2017-12-18 | 2018-07-24 | 黄淮学院 | A kind of half active/passive mixing damping device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2677741C (en) * | 2007-05-16 | 2012-09-04 | Thyssen Elevator Capital Corp. | Actively damped tension member |
| US7529154B2 (en) * | 2007-09-28 | 2009-05-05 | The United States Of America As Represented By The Secretary Of The Army | Hybrid thin film heterostructure modular vibration control apparatus and methods for fabrication thereof |
| CH710538B1 (en) * | 2014-12-18 | 2018-09-28 | Re Fer Ag | Method for creating prestressed structures or components by means of tension elements made of shape memory alloys and building or component equipped therewith. |
-
2017
- 2017-12-18 CN CN201711361481.9A patent/CN108035598B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010399A1 (en) * | 2003-07-22 | 2005-02-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Modular interface for damping mechanical vibrations |
| WO2006126896A1 (en) * | 2005-05-24 | 2006-11-30 | Geoffrey John Thompson | Energy-absorbing and force-limiting friction coupling |
| CN201027352Y (en) * | 2007-04-06 | 2008-02-27 | 大连理工大学 | Self-reset hyperelastic shape memory alloy deoscillator |
| CN201037277Y (en) * | 2007-04-06 | 2008-03-19 | 大连理工大学 | Energy dissipation-reposition shape memory alloy damper |
| JP2009041585A (en) * | 2007-08-06 | 2009-02-26 | Shimizu Corp | Friction damper |
| JP3154894U (en) * | 2009-08-18 | 2009-10-29 | 一品國際科技股▲ふん▼有限公司 | Lens drive device |
| CN101851963A (en) * | 2010-06-23 | 2010-10-06 | 湖南大学 | Piezoelectric-SMA composite variable friction intelligent damper |
| KR20120013113A (en) * | 2010-08-04 | 2012-02-14 | 성균관대학교산학협력단 | Smart self-maintenance system for railroad tracks |
| DE102015103105A1 (en) * | 2014-03-11 | 2015-09-17 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | SYSTEM WITH DAMPER-CONTROLLED SWITCH FOR MOTION CONTROL OF A SHAPED MEMBRANE ALLOY ACTUATOR |
| KR20160086664A (en) * | 2015-01-12 | 2016-07-20 | 인천대학교 산학협력단 | Energy dissipation damper of original form restoration |
| CN104763069A (en) * | 2015-03-27 | 2015-07-08 | 燕山大学 | SMA-piezoelectric frictional combined damper |
| CN105201099A (en) * | 2015-10-26 | 2015-12-30 | 西安建筑科技大学 | SMA piezoelectric friction intelligent mixed damper |
| CN105350679A (en) * | 2015-12-15 | 2016-02-24 | 西安建筑科技大学 | Reset type SMA piezoelectricity-friction mixed damper |
| CN105672515A (en) * | 2016-03-10 | 2016-06-15 | 苏州科技学院 | Magnetic shape memory alloy restraining friction damper with self-reset function |
| CN207647271U (en) * | 2017-12-18 | 2018-07-24 | 黄淮学院 | A kind of half active/passive mixing damping device |
Non-Patent Citations (5)
| Title |
|---|
| 压电式谷物质量流量传感器设计及试验;高建民;李扬波;郝磊斌;张刚;喻露;;江苏大学学报(自然科学版)(第02期);全文 * |
| 基于SMA-压电摩擦智能阻尼器的空间杆系结构优化控制;王社良;黄鑫;展猛;;地震工程与工程振动(第06期);全文 * |
| 基于SMA-压电阻尼器的巨-子结构智能控制;谭平;李森萍;刘良坤;戴纳新;张颖;;自然灾害学报(第04期);全文 * |
| 基于形状记忆合金的新型消能减震装置抗震性能研究;陈云;吕西林;蒋欢军;;振动与冲击(第15期);全文 * |
| 形状记忆合金被动阻尼器及结构地震反应控制试验研究和分析;毛晨曦, 李惠, 欧进萍;建筑结构学报(第03期);全文 * |
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