CN203890902U - External prestressed cable vibration reduction device - Google Patents
External prestressed cable vibration reduction device Download PDFInfo
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- CN203890902U CN203890902U CN201420305334.5U CN201420305334U CN203890902U CN 203890902 U CN203890902 U CN 203890902U CN 201420305334 U CN201420305334 U CN 201420305334U CN 203890902 U CN203890902 U CN 203890902U
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 239000006096 absorbing agent Substances 0.000 claims 7
- 210000002435 tendon Anatomy 0.000 claims 7
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 28
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002787 reinforcement Effects 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
一种体外预应力索减振装置，所述体外预应力索减振装置由两块外套板、两块内套板、多个减振弹簧和拉杆组成；所述外套板和内套板均为半圆形；两块外套板拼接在一起形成圆形外套，两块内套板拼接在一起形成圆形内套，圆形外套的直径大于圆形内套，圆形外套和圆形内套同心设置；多个减振弹簧设置于圆形内套的外周面和圆形外套的内周面之间；拉杆一端与圆形外套的外周面连接。本实用新型的有益技术效果是：可显著抑制体外预应力索的随机振动，保证体外预应力索的加固效果长期有效。
An external prestressed cable vibration damping device, the external prestressed cable vibration damping device is composed of two outer panels, two inner panels, a plurality of damping springs and pull rods; the outer panels and inner panels are Semi-circular; two outer casing panels are spliced together to form a circular outer casing, two inner casing panels are spliced together to form a circular inner casing, the diameter of the circular outer casing is larger than the circular inner casing, and the circular outer casing and the circular inner casing are concentric Setting; multiple damping springs are arranged between the outer peripheral surface of the circular inner sleeve and the inner peripheral surface of the circular outer sleeve; one end of the pull rod is connected with the outer peripheral surface of the circular outer sleeve. The beneficial technical effects of the utility model are: the random vibration of the external prestressed cable can be significantly suppressed, and the long-term effective reinforcement effect of the external prestressed cable can be ensured.
Description
技术领域 technical field
本实用新型涉及一种结构体加固处治技术，尤其涉及一种体外预应力索减振装置。 The utility model relates to a structure reinforcement treatment technology, in particular to an external prestressed cable vibration damping device.
背景技术 Background technique
近年来，体外预应力技术以其自身优势，已被广泛应用于旧桥的加固工程中，众多的工程实践证明，利用体外预应力加固旧桥，能显著提高结构承载力和抗裂度，有效改善结构的应力状态。体外预应力索长度可达几十上百米，刚度小，自身阻尼小，在车辆荷载以及风荷载的激励下，容易发生强烈的纵横向振动，这种振动随着索长度的增加而越发显著，如果不对其进行抑制，将影响体外预应力索的受力性能和使用寿命。 In recent years, external prestressing technology has been widely used in the reinforcement of old bridges due to its own advantages. Numerous engineering practices have proved that using external prestressing to strengthen old bridges can significantly improve the structural bearing capacity and crack resistance, effectively Improve the stress state of the structure. The length of external prestressed cables can reach tens of hundreds of meters, with low stiffness and small self-damping. Under the excitation of vehicle load and wind load, strong vertical and horizontal vibrations are prone to occur. This vibration becomes more obvious with the increase of cable length. , if it is not suppressed, it will affect the mechanical performance and service life of the external prestressed cable.
实用新型内容 Utility model content
针对背景技术中的问题，本实用新型提出了一种体外预应力索减振装置，其结构为：所述体外预应力索减振装置由两块外套板、两块内套板、多个减振弹簧和拉杆组成；所述外套板和内套板均为半圆形；两块外套板拼接在一起形成圆形外套，两块内套板拼接在一起形成圆形内套，圆形外套的直径大于圆形内套，圆形外套和圆形内套同心设置；多个减振弹簧设置于圆形内套的外周面和圆形外套的内周面之间；拉杆一端与圆形外套的外周面连接。 Aiming at the problems in the background technology, the utility model proposes an external prestressed cable vibration damping device, the structure of which is: the external prestressed cable vibration damping device consists of two outer jacket plates, two inner jacket Composed of vibrating springs and pull rods; the outer outer plate and inner outer plate are semicircular; two outer outer plates are spliced together to form a circular outer shell, two inner inner plates are spliced together to form a circular inner shell, and the circular outer shell The diameter is larger than the circular inner sleeve, and the circular outer sleeve and the circular inner sleeve are arranged concentrically; multiple damping springs are arranged between the outer peripheral surface of the circular inner sleeve and the inner peripheral surface of the circular outer sleeve; one end of the pull rod is connected to the circular outer sleeve. peripheral connection.
本实用新型的原理是：将体外预应力索穿套在圆形内套中，采用锚固手段将拉杆外端固定，由圆形外套、圆形内套和减振弹簧所形成的阻尼装置，可有效增加体外预应力索受到的周向阻尼，抑制体外预应力索的随机振动，保证体外预应力索的加固效果长期有效。另外，圆形外套和圆形内套均采用两块套板拼接而成，能便于将减振装置安装在体外预应力索外；在使用体外预应力索减振装置时，可根据体外预应力索的长度选择减振装置的数量，如果体外预应力索长度较短，可在体外预应力索中部设置一个减振装置，如果体外预应力索长度较长，可在体外预应力索上每间隔一定距离就设置一个减振装置。 The principle of the utility model is: put the external prestressed cable through the circular inner sleeve, use anchor means to fix the outer end of the pull rod, and the damping device formed by the circular outer sleeve, the circular inner sleeve and the damping spring can be Effectively increase the circumferential damping of the external prestressed cable, suppress the random vibration of the external prestressed cable, and ensure the long-term effective reinforcement effect of the external prestressed cable. In addition, the circular outer sleeve and the circular inner sleeve are spliced by two sets of plates, which can facilitate the installation of the vibration damping device outside the external prestressed cable; when using the external prestressed cable vibration damping device, it can The length of the cable selects the number of vibration damping devices. If the length of the external prestressed cable is short, a vibration damping device can be installed in the middle of the external prestressed cable. If the length of the external prestressed cable is long, it can A vibration damping device is set at a certain distance.
用于锚固拉杆的锚固结构可采用如下两种优选实施方案：方案一，所述拉杆的另一端通过一锚固板锚固在结构体上；对于桥梁而言，可将拉杆直接锚固在桥肋上；方案二，所述体外预应力索减振装置的数量为2个，两个体外预应力索减振装置的拉杆互相连接，这种方式利用两个减振装置互相进行锚固，相比于前一方案，方案二对结构体的破坏性更小。 The anchoring structure for anchoring the tie rods can adopt the following two preferred implementations: scheme one, the other end of the tie rods is anchored on the structure through an anchor plate; for bridges, the tie rods can be directly anchored on the bridge ribs; Option two, the number of external prestressed cable vibration damping devices is 2, and the pull rods of the two external prestressed cable vibration damping devices are connected to each other. In this way, the two vibration damping devices are used to anchor each other. Compared with the previous Scheme, scheme two is less destructive to the structure.
为了便于调节拉杆的长度，本实用新型还作了如下改进：所述拉杆由多根连接杆和多个连接套筒组成；所述连接套筒内设置有螺纹孔，所述连接杆端部设置有外螺纹，连接杆与连接套筒螺纹连接，每两根连接杆之间通过连接套筒连接。具体施工时，可根据体外预应力索与减振装置锚固点之间的实际跨度合理确定连接杆的数量，然后用连接套筒将连接杆连接起来。 In order to facilitate the adjustment of the length of the pull rod, the utility model also makes the following improvements: the pull rod is composed of a plurality of connecting rods and a plurality of connecting sleeves; threaded holes are arranged in the connecting sleeves, and the ends of the connecting rods are provided with There are external threads, the connecting rod is threadedly connected with the connecting sleeve, and every two connecting rods are connected through the connecting sleeve. During specific construction, the number of connecting rods can be reasonably determined according to the actual span between the external prestressed cable and the anchor point of the vibration damping device, and then the connecting rods can be connected with connecting sleeves.
本实用新型的有益技术效果是：可显著抑制体外预应力索的随机振动，保证体外预应力索的加固效果长期有效。 The beneficial technical effect of the utility model is: the random vibration of the external prestressed cable can be significantly suppressed, and the long-term effective reinforcement effect of the external prestressed cable can be ensured.
附图说明 Description of drawings
图1、本实用新型的结构示意图； Fig. 1, the structural representation of the utility model;
图2、本实用新型的使用状态图一； Fig. 2, the use state diagram one of the utility model;
图3、本实用新型的使用状态图二； Fig. 3, the use status figure two of the utility model;
图4、拉杆结构示意图； Figure 4. Schematic diagram of the tie rod structure;
图中各个标记所对应的名称分别为：外套板1、内套板2、减振弹簧3、拉杆4、连接杆4-1、连接套筒4-2、锚固板5。 The names corresponding to the marks in the figure are respectively: Outer plate 1, Inner plate 2, Damping spring 3, Pull rod 4, Connecting rod 4-1, Connecting sleeve 4-2, Anchor plate 5.
具体实施方式 Detailed ways
一种体外预应力索减振装置，所述体外预应力索减振装置由两块外套板1、两块内套板2、多个减振弹簧3和拉杆4组成；所述外套板1和内套板2均为半圆形；两块外套板1拼接在一起形成圆形外套，两块内套板2拼接在一起形成圆形内套，圆形外套的直径大于圆形内套，圆形外套和圆形内套同心设置；多个减振弹簧3设置于圆形内套的外周面和圆形外套的内周面之间；拉杆4一端与圆形外套的外周面连接。 An external prestressed cable vibration damping device, the external prestressed cable vibration damping device is composed of two outer casing plates 1, two inner casing plates 2, a plurality of vibration damping springs 3 and pull rods 4; the outer casing plates 1 and The inner cover plates 2 are all semicircular; two outer cover plates 1 are spliced together to form a circular outer cover, and two inner cover plates 2 are spliced together to form a circular inner cover, and the diameter of the circular outer cover is larger than the circular inner cover. The circular outer cover and the circular inner cover are arranged concentrically; a plurality of damping springs 3 are arranged between the outer peripheral surface of the circular inner cover and the inner peripheral surface of the circular outer cover; one end of the pull rod 4 is connected to the outer peripheral surface of the circular outer cover.
进一步地，所述拉杆4的另一端通过一锚固板5锚固在结构体上。 Further, the other end of the tie rod 4 is anchored on the structure through an anchor plate 5 .
进一步地，所述体外预应力索减振装置的数量为2个，两个体外预应力索减振装置的拉杆4互相连接。 Further, the number of external prestressed cable vibration damping devices is two, and the tie rods 4 of the two external prestressed cable vibration damping devices are connected to each other.
进一步地，所述拉杆4由多根连接杆4-1和多个连接套筒4-2组成；所述连接套筒4-2内设置有螺纹孔，所述连接杆4-1端部设置有外螺纹，连接杆4-1与连接套筒4-2螺纹连接，每两根连接杆4-1之间通过连接套筒4-2连接。 Further, the pull rod 4 is composed of a plurality of connecting rods 4-1 and a plurality of connecting sleeves 4-2; the connecting sleeves 4-2 are provided with threaded holes, and the ends of the connecting rods 4-1 are provided with There are external threads, the connecting rod 4-1 is threadedly connected with the connecting sleeve 4-2, and every two connecting rods 4-1 are connected through the connecting sleeve 4-2.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420305334.5U CN203890902U (en) | 2014-06-10 | 2014-06-10 | External prestressed cable vibration reduction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420305334.5U CN203890902U (en) | 2014-06-10 | 2014-06-10 | External prestressed cable vibration reduction device |
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| Publication Number | Publication Date |
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| CN203890902U true CN203890902U (en) | 2014-10-22 |
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| CN201420305334.5U Expired - Fee Related CN203890902U (en) | 2014-06-10 | 2014-06-10 | External prestressed cable vibration reduction device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638311A (en) * | 2016-11-15 | 2017-05-10 | 湖南科技大学 | Multi-cable compounded damping cable |
| CN110485267A (en) * | 2019-09-03 | 2019-11-22 | 哈尔滨工业大学（深圳） | A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid |
| CN111622133A (en) * | 2020-05-20 | 2020-09-04 | 中国国家铁路集团有限公司 | Bridge external pre-tightening force reinforcing system and mounting method thereof |
-
2014
- 2014-06-10 CN CN201420305334.5U patent/CN203890902U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638311A (en) * | 2016-11-15 | 2017-05-10 | 湖南科技大学 | Multi-cable compounded damping cable |
| CN110485267A (en) * | 2019-09-03 | 2019-11-22 | 哈尔滨工业大学（深圳） | A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid |
| CN111622133A (en) * | 2020-05-20 | 2020-09-04 | 中国国家铁路集团有限公司 | Bridge external pre-tightening force reinforcing system and mounting method thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20150610 |
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| EXPY | Termination of patent right or utility model |