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Bidirection adjustable tuning quality escillating damper

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Publication number
CN1718929A
Authority
CN
Grant status
Application
Patent type
Prior art keywords
transverse
damper
load
structure
tuning
Prior art date
Application number
CN 200510046941
Other languages
Chinese (zh)
Inventor
李宏男
霍林生
国巍
Original Assignee
大连理工大学
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Abstract

The present invention relates to a shock absorption control equipment for large-span pedestrian overhead bridge, harbour landing stage and related structure, it can be used for reducing the resonance reaction of bridge structure under the action of pedestrian load and transverse wind load. It is characterized by that the bottom portion of mass-tuning shock damper is equipped with a transverse moving mechanism formed from box-type beam-slab, guidway and wheels, and also equipped with transverse spring and transverse viscous oil damper.

Description

双向可调式调谐质量减振器 Bidirectional adjustable tuned mass damper

技术领域 FIELD

本发明属于土木工程结构减振技术领域,涉及到大跨度人行天桥、港口栈桥及相关结构使用钢板、导向杆、弹簧和粘滞油阻尼器组成的双向减振器的设计。 The present invention belongs to the technical field of civil engineering structural vibration, the design involves large span pedestrian bridge, bridge port and related structures with steel, the guide rod, a spring and a viscous damper oil consisting of a two-way damper.

背景技术 Background technique

随着城市建设的发展,道路变得越来越宽。 With the development of urban construction, the road becomes wider. 作为保证行人快速、安全通过马路的人行天桥,其跨度也越来越大。 As a pedestrian ensure fast and safe by road pedestrian bridge, its span is also growing. 对于这类大跨度人行天桥,尽管强度和刚度比较容易满足设计要求,但是竖向和横向振动的频率都比较低,通常只有2赫兹左右。 For such large-span pedestrian bridge, although strength and rigidity is easier to meet the design requirements, the vertical and lateral vibration frequencies are relatively low, typically only about 2 Hz. 而统计结果表明,人行走时的频率也是2赫兹左右,因此,在行人通过天桥时容易在竖向产生共振,造成行人恐慌甚至产生桥梁破坏,影响天桥的正常使用。 And statistics show that the frequency used when a person is walking about 2 Hz, therefore, likely to occur when vertical resonance pedestrian overpass, bridge causing damage and even pedestrians panic, affect the normal use of the bridge. 人行天桥横向由于风载作用也会产生不利振动。 Pedestrian bridge lateral loads due to wind will adversely vibration. 同样,港口栈桥及其他类似结构也存在共振问题。 Similarly, ports trestle and other similar structures also exist resonance problems. 由于结构振动控制技术在工程中不断地得到应用,因此针对天桥的共振问题寻找适当的控制方法同样也是非常有意义的。 Due to structural vibration control technology in engineering continue to be applied, so look for appropriate control methods for resonance problems flyover is also very meaningful. 现有的减振装置仅能减小结构一个方向的反应,对于大跨人行天桥这类同时在竖向和横向均可能产生较大振动的结构,目前尚没有合适的减振方法。 The reaction in one direction only the structure of the conventional vibration reducing apparatus for a large span footbridge while larger structures may be generated both in the vertical and lateral vibrations such, there is currently no suitable method of damping.

调频质量阻尼器(Tuned Mass Damper,简称TMD)是一种经典的减振控制装置,它是一个由弹簧、阻尼器和质量块所组成的振动系统。 Tuned mass damper (Tuned Mass Damper, abbreviated TMD) is a classic damping control means, which is a vibration system by the spring, damper and mass thereof. 当它安装在结构上时,其固有频率一般调整到接近结构的自振频率,结构振动引起TMD的共振,而调频质量阻尼器的振动惯性力又反作用于结构本身,达到减小结构反应的目的。 When it is mounted on the structure, the natural frequency is usually set close to the natural frequency of the structure, the structure of the TMD resonance due to vibration, the vibration of the inertial force and the tuned mass damper counteracts the structure itself, to reduce the structural response of the object .

但是,TMD的对结构振动的控制作用与结构及TMD本身的频率有很大的相关性。 However, the control effect of the vibration of the TMD and TMD and frequency structure itself has a great relevance. 当TMD的频率调谐到与结构的自振频率一致时,能达到很好的减振效果;当TMD的频率与结构的自振频率不一致时,减振效果比较差,甚至会加剧原结构的反应。 When TMD tuned to a frequency consistent with the natural frequency of the structure, to achieve good damping effect; when the vibration frequency is inconsistent with the structure of the TMD, the damping effect is poor even exacerbate the original structure of the reaction . 实际工程中,结构振动的频率经常会随环境状况的变化而发生改变,而对于传统的TMD减振装置,其频率在安装完成后很难再进行调谐,因此会导致TMD的频率失调现象。 In practical engineering, the frequency of vibration of the structure occurs often changes with changes in environmental conditions, and for a conventional damper device TMD, very difficult to tune the frequency after installation, thus causing the frequency of the TMD imbalances. 同时考虑双向振动影响时,传统的单向TMD已经不能满足减振的需要了。 When taking into account the two-way influence of vibration, traditional one-way TMD can not meet the needs of the vibration.

发明内容 SUMMARY

本发明的目的是为大跨度人行过街天桥、港口栈桥及相关结构提供一种减振控制装置,解决桥梁结构在人行荷载作用和风荷载作用下的竖向和横向的共振问题。 Object of the present invention is to a large span Skyway, bridge ports and associated structures to provide a vibration control apparatus, to resolve resonance problems of vertical and lateral bridge structure at pedestrian loads and wind loads.

本发明的技术方案是在保证TMD竖向振动的频率与结构的自振频率一致的基础上,在TMD的下部设置横向移动机构,使得TMD能够同时在竖向和横向运动。 Aspect of the present invention is based on the natural vibration frequency be consistent with TMD configuration of the vertical vibration, lateral movement mechanism provided in the lower part of the TMD, TMD possible so that vertical and lateral motion simultaneously. 横向移动机构由箱型梁板2、导轨6和轮子7组成,横向移动机构上设置横向弹簧10和横向粘滞油阻尼器15,以达到同时减小桥梁结构竖向和横向振动的目的。 Lateral movement mechanism comprises a box-shaped slab 2, guide wheels 6 and 7 composed of a spring 10 disposed transversely and laterally viscous oil damper mechanism 15 on the lateral movement, in order to achieve the object of the structure while minimizing vertical and lateral vibration of the bridge.

本发明的效果和益处是双向可调式调谐质量减振器能减小桥梁结构在人行荷载和风荷载作用下竖向和横向的共振问题,保证桥梁结构的安全性。 Effects and benefits of the present invention is a two-way adjustable tuned mass damper can be reduced in the vertical and lateral bridge structure resonance problem pedestrian loads and wind loads, to ensure the safety of the bridge structure. 可适用于大跨度人行过街天桥、港口栈桥及相关结构,能够产生巨大的经济效益和明显的社会效益。 Can be applied to large span Skyway, ports and related trestle structure, it can produce huge economic and social benefits significantly.

附图说明 BRIEF DESCRIPTION

附图1是双向可调式TMD减振器立面结构示意图。 1 is a schematic structural facade bidirectional adjustable damper TMD.

图中:1竖向粘滞油阻尼器,2箱型梁板,3钢板,4螺栓,5导向杆,6导轨,7轮子,8支撑钢板,9轴承,10横向弹簧,11垫板,12箱型梁,13竖向弹簧。 FIG: 1 vertical viscous oil damper, a box-shaped slab 2, the steel sheet 3, a bolt 4, the guide rod 5, the guide rail 6, the wheel 7, the support plate 8, bearing 9, lateral spring 10, backing plate 11, 12 box beams, the vertical springs 13.

附图2是双向可调式TMD减振器钢板平面结构示意图。 Figure 2 is a schematic structural diagram of a plane steel damper TMD bidirectional adjustable.

附图3是双向可调式TMD减振器平面结构示意图。 Figure 3 is a plan schematic view of a two-way adjustable damper TMD.

图中:14螺栓,15横向粘滞油阻尼器,16垫板,17竖向垫板。 FIG: bolt 14, 15 lateral viscous oil damper, the pad 16, the vertical plate 17.

具体实施方式 detailed description

以下结合技术方案和附图详细叙述本发明的最佳实施方式。 In conjunction with the following drawings and detailed description of the technical solutions preferred embodiment of the present invention.

本发明提出的双向可调式TMD减振器如图1,图2和图3所示。 Adjustable two-way damper TMD proposed by the present invention shown in FIG. 1, 2 and 3. 每个减振器由竖向四根弹簧,横向两根弹簧,竖向横向各一个粘滞油阻尼器,竖向两根导向杆,横向导轨和箱型结构,横向移动结构,及若干钢板组成。 Each damper spring by the four vertical, lateral two springs, each of a vertical transverse viscous oil damper, two vertical guide rods, the transverse rail and box structure, the lateral movement of the structure, and a plurality of steel plates . 减振器安装在桥梁结构的箱型梁12底板上部。 A damper mounted in the upper structure of the bridge box girder bottom plate 12. 具体做法是先在钢板3上预先开设螺栓孔和导向杆穿孔。 Specific approach is to advance the steel sheet 3 and the guide rod bolt holes perforated. 将竖向弹簧13和竖向粘滞油阻尼器1的上端焊接在一块钢板3上,然后将竖向弹簧13和竖向粘滞油阻尼器1的下端焊接在垫板11上,再将垫板11焊接到支撑钢板8上。 The upper end of vertical spring 13 and the vertical viscous oil damper 1 is welded to a steel 3, and then the lower end of the vertical springs 13 and vertical viscous oil damper 1 is soldered on the pad 11, then pad plate 11 is welded to the supporting plate 8. 同样将两根导向杆5沿竖向垂直穿过钢板3预留的导向杆孔,下端焊在垫板11上,再将垫板11焊接在支撑钢板8上。 Also the two vertical guide rods 5 along a vertical guide rod hole plate 3 through the reservation, the lower end is welded to the backing plate 11, backing plate 11 and then soldered on the support plate 8. 最后,将其余的钢板3从导向杆5的上端穿进来,用螺栓4将所有的钢板3固定在一起,构成TMD减振系统的质量块。 Finally, the remaining steel from the upper end of the guide rod 3 through 5 come with all the bolts 4 plate 3 are fixed together to form TMD mass damping system. 其中,导向杆5可采用直径30-50毫米的钢管制作。 Wherein the guide rod 5 may employ steel pipe having a diameter 30-50 mm.

竖向弹簧13和钢板3的设计要保证TMD减振器振动的频率与结构竖向振动的频率一致。 Design of vertical spring 13 and the steel plate 3 to ensure consistency with the frequency of the vertical vibration of the vibration damper TMD frequency structure. 当在实际工程中需要调谐TMD减振器振动的频率时,只需改变钢板的厚度(即改变叠加钢片的数量)即可实现。 When the actual engineering need to tune the vibration frequency of the damper TMD, simply by changing the plate thickness (i.e., varying the number of superimposed steel) can be realized. 导向杆5的作用在于限制质量块只在竖向发生位移,避免其侧向摇摆,保证TMD减振器振动的频率与结构竖向振动频率相一致。 The guide rod 5 is to limit the effect of the mass is displaced only in the vertical, to avoid its lateral swinging, to ensure the frequency and vertical vibration frequency of the vibration damper structure consistent with TMD. 整个竖向控制系统放置于支撑钢板8上。 Vertical entire control system 8 is placed on the support plate.

横向移动机构由箱型梁板2、导轨6和轮子7组成,横向移动机构上设置横向弹簧10和横向粘滞油阻尼器15。 Lateral movement mechanism comprises a box-shaped slab 2, guide wheels 6 and 7 composed of a spring 10 disposed transversely and laterally viscous oil damper mechanism 15 on the lateral movement. 横向弹簧10和横向粘滞油阻尼器15的一端分别焊接到垫板11和16上,然后垫板11和16都连接到桥的箱型梁12的侧面,另外一端与竖向垫板17焊接,竖向垫板17与支撑钢板8焊接到一起,轴承9焊接到支撑钢板8的底部,轴承9穿过轮子7的孔洞,通过螺栓14固定。 One end of the spring 10 and the transverse lateral viscous oil damper 15 are welded to the backing plate 11 and 16, pads 11 and 16 are then connected to the side of the bridge box beam 12, and the other end of the vertical plate 17 welded the vertical plate 17 and the support plate 8 is welded together, bearing bottom plate 9 is welded to the support 8, bearing 9 passing through the holes of wheels 7, is fixed by a bolt 14. 导轨6、箱型梁板2与轮子7共同构成横向移动机构,轮子7由箱型梁板2内设置的导轨6限制其运动轨迹。 Rail 6, Beam box 2 constitute the wheel lateral movement mechanism 7, guide wheel 7 is provided by an inner box-shaped slab 26 to limit its trajectory.

Claims (1)

1.一种双向可调式调谐质量减振器,其特征是在调谐质量减振器的底部设置箱型梁板(2)、导轨(6)和轮子(7)组成横向移动机构,并在横向移动机构上设置横向弹簧(10)和横向粘滞油阻尼器(15)。 A bi-directional adjustable tuned mass damper, wherein the tuned mass damper box provided at the bottom slab (2), the guide rail (6) and the wheel (7) consisting of lateral movement mechanism, and a transverse moving means provided on the lateral spring (10) and a transverse viscous oil damper (15).
CN 200510046941 2005-07-24 2005-07-24 Bidirection adjustable tuning quality escillating damper CN1718929A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100582409C (en) 2007-03-22 2010-01-20 武汉理工大学 Continuous vibration control method for structural member and controller thereof
CN102102401A (en) * 2011-03-09 2011-06-22 北京工业大学 Damping control device of composite sealed tuned mass damper
CN102322021A (en) * 2010-12-08 2012-01-18 东南大学 Damping steel box girder for long span bridge
CN101024982B (en) 2007-03-22 2013-06-12 武汉理工大学 3-D vibration control method and controller for structural member
CN103276664A (en) * 2011-04-27 2013-09-04 清华大学 Piezoelectric energy-harvesting tuned mass damper
CN103306395A (en) * 2013-07-12 2013-09-18 山东大学 Multi-dimensional adjustable vibration reduction control device
CN104763070A (en) * 2015-04-14 2015-07-08 山东大学 Suspension type multidimensional impact vibration reduction damper
CN105133741A (en) * 2015-08-19 2015-12-09 四川三树节能科技有限公司 Strain increasing device and damper

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100582409C (en) 2007-03-22 2010-01-20 武汉理工大学 Continuous vibration control method for structural member and controller thereof
CN101024982B (en) 2007-03-22 2013-06-12 武汉理工大学 3-D vibration control method and controller for structural member
CN102322021A (en) * 2010-12-08 2012-01-18 东南大学 Damping steel box girder for long span bridge
CN102102401A (en) * 2011-03-09 2011-06-22 北京工业大学 Damping control device of composite sealed tuned mass damper
CN102102401B (en) 2011-03-09 2013-02-13 北京工业大学 Damping control device of composite sealed tuned mass damper
CN103276664A (en) * 2011-04-27 2013-09-04 清华大学 Piezoelectric energy-harvesting tuned mass damper
CN103306395A (en) * 2013-07-12 2013-09-18 山东大学 Multi-dimensional adjustable vibration reduction control device
CN104763070A (en) * 2015-04-14 2015-07-08 山东大学 Suspension type multidimensional impact vibration reduction damper
CN105133741A (en) * 2015-08-19 2015-12-09 四川三树节能科技有限公司 Strain increasing device and damper
CN105133741B (en) * 2015-08-19 2016-06-22 四川三树银城科技有限公司 And damper means an increase of strain

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