CN203034632U

CN203034632U - Rolling tuned mass damper

Info

Publication number: CN203034632U
Application number: CN 201220727087
Authority: CN
Inventors: 潘鹏; 邓开来; 陈浩文
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2012-12-26
Filing date: 2012-12-26
Publication date: 2013-07-03
Anticipated expiration: 2022-12-26

Abstract

The rolling mass tuned damper belongs to the technical field of energy dissipation and vibration reduction of civil engineering structures. It is a damping energy dissipation device that uses the mass tuned damper on the top of a high-rise building to control the vibration of the building and reduce the structural response under wind load and earthquake load. The gear is fixed to the large-mass disc, and the arc support with rack is fixedly installed on the building structure, and the gear meshes with the rack with the arc support; dissipative damping is installed on the lower part of the arc support with rack Liquid tank or friction plate; when the radius of the large-mass disc is at the lowest point of the arc bearing with rack, part of it extends into the dissipative damping liquid tank to dissipate energy, or dissipate energy through friction with the friction plate. The utility model can significantly increase the equivalent mass of the mass-tuned damper without significantly increasing the gravity load, thereby greatly reducing the dynamic response of the structure under horizontal load; its vibration reduction effect is stable, the structure is simple, and it is safe Reliable, durable, and highly designable, it can effectively improve the comfort of high-rise buildings.

Description

Rolling Mass Tuned Dampers

技术领域 technical field

本实用新型属于土木工程结构消能减振技术领域，具体涉及一种控制建筑物振动、减小风荷载和地震荷载下结构响应的滚动质量调谐阻尼器。The utility model belongs to the technical field of energy dissipation and vibration reduction of civil engineering structures, in particular to a rolling mass tuned damper for controlling building vibration and reducing structural response under wind load and earthquake load.

背景技术 Background technique

近年来质量调谐阻尼器作为一种消能减振装置得到了越来越广泛的应用，其良好的减振效果也得到了大量的工程验证。但是普通的质量调谐阻尼器为了取得较好的减震效果，质量比设定较大，这会显著增加结构重量，正常情况希望达到原结构质量的3%~5%，这些附加质量将显著增加结构的重力荷载。In recent years, the mass-tuned damper has been widely used as an energy dissipation and vibration reduction device, and its good vibration reduction effect has also been verified by a large number of projects. However, in order to achieve a better shock absorption effect for ordinary mass-tuned dampers, the mass ratio is set to be large, which will significantly increase the structural weight. Normally, it is expected to reach 3%~5% of the original structural mass, and these additional masses will increase significantly. Gravity loads of the structure.

现有的质量调谐阻尼器系统常见的有悬挂式和滑轨式两种。悬挂式质量调谐阻尼系统通过在结构顶端设置桁架等结构形式，用悬索将大质量块悬挂起来，并安装阻尼器系统以便耗散能量。由于质量块按单摆运动，其自振频率与悬索长度相关，如要求系统具有较长的自振周期，则要求悬索长度非常大。这一方法对于空间利用率低下，构造复杂，工程造价高，安装不便。另一方面如果悬挂结构一旦失效，跌落的大质量块将对结构产生破坏，造成安全隐患。滑轨式质量调谐阻尼器通过设置滑动轨道和弹簧系统，使质量块在滑动轨道上按照设定的频率运动，并安装阻尼器以耗散能力。该技术对滑动轨道的摩擦系数要求非常严格，如果滑动轨道的摩擦系数太大，将出现质量块无法滑动的情况。The existing mass-tuned damper systems generally have two types: suspension type and sliding rail type. The suspended mass tuned damping system sets a structural form such as a truss at the top of the structure, suspends a large mass with a suspension cable, and installs a damper system to dissipate energy. Since the mass moves as a simple pendulum, its natural frequency is related to the length of the suspension cable. If the system is required to have a longer natural vibration period, the length of the suspension cable is required to be very large. This method has low space utilization rate, complex structure, high engineering cost and inconvenient installation. On the other hand, if the suspension structure fails, the falling large mass will damage the structure and cause potential safety hazards. The sliding track type mass tuned damper sets the sliding track and the spring system to make the mass move on the sliding track according to the set frequency, and installs the damper to dissipate the energy. This technology has very strict requirements on the friction coefficient of the sliding track. If the friction coefficient of the sliding track is too large, the mass block will not be able to slide.

滚动质量调谐阻尼器系统在带纸条圆弧支座上安装大质量圆盘，充分利用大质量圆盘的转动惯量，使其提供高出自身重量数倍的等效质量，这样就能减轻结构所承受的竖向荷载。通过简单的安装方式，允许大质量圆盘在支座上、附加适当的阻尼，并辅以相应的耗能构造措施（例如在下部安装阻尼液箱），可作为质量调谐阻尼器对高层建筑进行有效的振动控制，并且满足供目前大多数质量调谐体系在地震中无法满足的大位移条件。这种方法一方面减轻了附加质量对结构的不利影响，提高高层建筑的抗震性能。该方法具有构造简单、耐久性强的特点。质量调谐阻尼器系统的减振效果依赖于其稳定的自振频率，而滚动质量调谐阻尼系统的基频可调，通过改变大质量圆盘上配重的位置（示意图中留有安装质量块的螺栓孔位置），或者改变支座面圆弧半径与齿轮半径，即可轻易调整该体系的频率。The rolling mass tuned damper system installs a large-mass disc on the circular arc support with paper strips, and makes full use of the moment of inertia of the large-mass disc to provide an equivalent mass several times higher than its own weight, which can reduce the structure vertical load borne. Through a simple installation method, a large-mass disc is allowed to be placed on the support, and appropriate damping is added, supplemented by corresponding energy-dissipating structural measures (such as installing a damping liquid tank in the lower part), it can be used as a mass-tuned damper for high-rise buildings. Effective vibration control, and meet the large displacement conditions that most current mass tuning systems cannot meet in earthquakes. On the one hand, this method reduces the adverse effect of additional mass on the structure and improves the seismic performance of high-rise buildings. The method has the characteristics of simple structure and strong durability. The vibration reduction effect of the mass-tuned damper system depends on its stable natural frequency, while the fundamental frequency of the rolling mass-tuned damping system can be adjusted by changing the position of the counterweight on the large-mass disc (in the schematic diagram, there is a place where the mass block is installed The frequency of the system can be easily adjusted by changing the arc radius of the support surface and the radius of the gear.

目前，质量调谐减震技术在日本、美国等发达国家以及中国等发展中国家均已经得到较多应用，本实用新型提出技术具有高效，可靠，适应性强的特点，具有广阔的市场应用前景。At present, mass-tuned damping technology has been widely used in developed countries such as Japan and the United States, and developing countries such as China. The technology proposed in this utility model has the characteristics of high efficiency, reliability and strong adaptability, and has broad market application prospects.

发明内容 Contents of the invention

本实用新型是为提供一种结构简单、安全可靠、耐久性强、基频可调、具有稳定的消能减振效果的滚动质量调谐阻尼器，能够较好地解决现有质量调谐阻尼系统的缺陷以及存在的问题。The utility model is to provide a rolling mass tuned damper with simple structure, safety and reliability, strong durability, adjustable fundamental frequency and stable energy dissipation and vibration reduction effect, which can better solve the problems of the existing mass tuned damping system. flaws and problems.

本实用新型采用的技术方案为：The technical scheme that the utility model adopts is:

齿轮与大质量圆盘固定，带齿条圆弧支座固定安装于建筑结构上，齿轮与带齿条圆弧支座的齿条啮合，能使齿轮在其上发生无摩擦滚动；大质量圆盘沿半径设置多圈安装孔，用以安装配重；在带齿条圆弧支座的下部安装耗散阻尼液箱或摩擦片；大质量圆盘的半径位于带齿条圆弧支座最低点时，部分伸入耗散阻尼液箱内耗散能量，或通过与摩擦片摩擦耗散能量。The gear is fixed to the large-mass disc, and the arc bearing with the rack is fixedly installed on the building structure, and the gear meshes with the rack with the arc bearing, so that the gear can roll on it without friction; the large-mass circle The disk is provided with multiple rings of mounting holes along the radius to install the counterweight; the dissipative damping fluid tank or friction plate is installed on the lower part of the arc support with rack; the radius of the large mass disc is located at the lowest point of the arc support with rack When the point is reached, the part extends into the dissipative damping fluid tank to dissipate energy, or dissipate energy through friction with the friction plate.

所述大质量圆盘上的配重以中心对称的方式安装，以免圆盘转动时产生较大偏心力；且配重的位置可调。The counterweight on the large-mass disc is installed in a center-symmetrical manner, so as to avoid a large eccentric force when the disc rotates; and the position of the counterweight is adjustable.

所述带齿条圆弧支座的两端安装挡块，避免大质量圆盘脱落。Stoppers are installed at both ends of the arc bearing with rack to prevent the large-mass disc from falling off.

所述大质量圆盘的数量为偶数个，分别安装在齿轮的两侧。The number of the large-mass discs is an even number, and they are respectively installed on both sides of the gear.

所述齿轮的数量为偶数个，分别安装在大质量圆盘的两侧。The number of the gears is an even number, and they are respectively installed on both sides of the large-mass disc.

所述阻尼液箱的宽度可调，方便并排安装的多个大质量圆盘同时穿过。The width of the damping liquid tank is adjustable, so that multiple large-mass discs installed side by side can pass through at the same time.

本实用新型具有如下优点：The utility model has the following advantages:

（1）滚动质量调谐阻尼器实现了系统固有频率可调，且具有稳定的减振效果。本实用新型通过大质量圆盘在带齿条圆弧支座上滚动提供稳定的调谐质量，通过质量块分布调整调谐系统的调谐频率。此特殊机制可保证本实用新型在全寿命周期中稳定的减振性能，克服了普通质量调谐阻尼器频率无法克服的难题。(1) The rolling mass tuned damper realizes the adjustable natural frequency of the system and has a stable vibration reduction effect. The utility model provides stable tuning quality by rolling a large-mass disc on an arc bearing with a rack, and adjusts the tuning frequency of the tuning system through the distribution of mass blocks. This special mechanism can guarantee the stable damping performance of the utility model in the whole life cycle, and overcomes the difficulty that ordinary mass-tuned dampers cannot overcome in frequency.

（2）滚动质量调谐阻尼器不会产生巨大的竖向荷载。其主要是利用了圆盘的转动惯量，使其能提供较大的等效质量，而实际竖向新增荷载远远小于一般的质量调谐阻尼器，这对于建筑物的安全性非常有利。(2) Rolling mass tuned dampers do not generate huge vertical loads. It mainly utilizes the moment of inertia of the disk, so that it can provide a large equivalent mass, and the actual vertical new load is much smaller than that of a general mass-tuned damper, which is very beneficial to the safety of the building.

（3）滚动质量调谐阻尼器的允许行程远远大于一般的质量调谐阻尼器。普通的质量调谐阻尼器在地震作用时往往锁死，因为其整个系统无法满足地震时质量震动需要的位移。而滚动质量调谐阻尼器可以增加带齿条圆弧支座的长度，满足非常大的工作行程。(3) The allowable stroke of the rolling mass tuned damper is much larger than that of the general mass tuned damper. Ordinary mass-tuned dampers often lock up when earthquakes occur, because the entire system cannot meet the displacement required by mass vibration during earthquakes. The rolling mass tuned damper can increase the length of the arc bearing with rack to meet a very large working stroke.

（4）可设计性强。滚动质量调谐阻尼器带齿条圆弧支座表面半径、大圆盘的质量分布以及齿轮的半径都可根据不同结构特性进行有针对的设计。而且与普通质量调谐阻尼器不同，滚动调谐质量阻尼器在安装后还可以根据工程实测方便地调整阻尼器自振频率，保证阻尼系统减振耗能效果的最大化。(4) Strong designability. The surface radius of the rolling mass tuned damper with rack arc support, the mass distribution of the large disc and the radius of the gear can be designed according to different structural characteristics. Moreover, unlike ordinary mass-tuned dampers, rolling-tuned mass dampers can easily adjust the natural vibration frequency of the damper according to engineering measurements after installation to ensure the maximum effect of vibration reduction and energy consumption of the damping system.

综上所述，滚动调谐质量阻尼器在兼顾目前已有质量调谐阻尼器技术优点的同时，有效规避了主要缺点，具有减振效果稳定、构造简单、安全可靠、耐久性和可设计性强等优点，能够有效提高结构的抗风和抗震性能，具有广阔的市场推广和应用前景。In summary, the rolling tuned mass damper effectively avoids the main disadvantages while taking into account the advantages of the existing mass tuned damper technology. It has stable vibration reduction effect, simple structure, safety and reliability, durability and strong designability, etc. Advantages, can effectively improve the wind resistance and seismic performance of the structure, and has broad market promotion and application prospects.

附图说明 Description of drawings

图1为本实用新型的力学计算简图。Fig. 1 is a mechanical calculation diagram of the utility model.

图2为本实用新型实施例的结构示意图。Fig. 2 is a structural schematic diagram of an embodiment of the utility model.

图3为带齿条圆弧支座的结构示意图。Fig. 3 is a structural schematic diagram of an arc bearing with a rack.

图4为大质量圆盘的结构示意图。Fig. 4 is a schematic diagram of the structure of a large-mass disc.

图中标号：Labels in the figure:

1-大质量圆盘；2-带齿条圆弧支座；3-齿轮。1-large mass disc; 2-arc support with rack; 3-gear.

具体实施方式 Detailed ways

本实用新型提供了一种滚动质量调谐阻尼器，下面结合附图和具体实施方式对本实用新型做进一步说明。The utility model provides a rolling mass tuned damper. The utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods.

如图2、图3和图4所示，两个齿轮3与在大质量圆盘1两侧分别与其固定，两个带齿条圆弧支座2并列固定安装于建筑结构上，中间留有容大质量圆盘1通过的间隙；齿轮3与带齿条圆弧支座2的齿条啮合；大质量圆盘1沿半径设置多圈安装孔，用以安装配重，质量块可以固定在圆盘上据圆心不同距离的地方，以便安装完毕以后调整系统的自振频率；在带齿条圆弧支座2的下部安装耗散阻尼液箱；大质量圆盘1的半径位于带齿条圆弧支座2最低点时，部分伸入耗散阻尼液箱内耗散能量。As shown in Fig. 2, Fig. 3 and Fig. 4, two gears 3 are respectively fixed on both sides of the large-mass disc 1, and two arc bearings 2 with racks are fixed and installed side by side on the building structure. The gap for the large-mass disc 1 to pass through; the gear 3 meshes with the rack with the rack-shaped arc support 2; the large-mass disc 1 is provided with multiple rings of mounting holes along the radius to install the counterweight, and the mass block can be fixed on the The places on the disc are located at different distances from the center of the circle so that the natural frequency of the system can be adjusted after installation; a dissipative damping fluid tank is installed under the arc bearing 2 with the rack; the radius of the large-mass disc 1 is located at the When the arc support 2 is at the lowest point, part of it extends into the dissipation damping liquid tank to dissipate energy.

带齿条圆弧支座2的长度根据需要调整，另外可在两端设置挡块，防止齿轮3滚出。The length of the arc bearing 2 with the rack can be adjusted as required, and stoppers can be set at both ends to prevent the gear 3 from rolling out.

该滚动质量调谐阻尼器的力学计算简图如图1所示，等效质量与等效刚度公式推导如下：The mechanical calculation diagram of the rolling mass tuned damper is shown in Fig. 1, and the equivalent mass and equivalent stiffness formulas are derived as follows:

R表示带齿条圆弧支座的弧形支座半径，r表示齿轮的半径，其中大质量圆盘的回旋半径用r₁表示（图中未标出），m表示大质量圆盘的总质量。以下推导该系统的自振频率，等效质量与等效刚度。式（1）表示该系统动能，式（2）表示该系统势能，式（3）表示拉格朗日运动方程。R represents the radius of the arc-shaped support with a rack arc support, r represents the radius of the gear, and the radius of gyration of the large-mass disc is represented by r ₁ (not marked in the figure), and m represents the total mass of the large-mass disc. quality. The natural frequency, equivalent mass and equivalent stiffness of the system are deduced below. Formula (1) represents the kinetic energy of the system, formula (2) represents the potential energy of the system, and formula (3) represents the Lagrangian equation of motion.

$T T = = \frac{m m {\overset{\cdot &Center Dot;}{θ θ}}^{22}}{22} [[{((R R - - r r))}^{22} + + {r r}_{11}^{22} {((R R - - r r))}^{22} / / {r r}^{22}]] - - - - - - ((11))$

V=mg(R-r)(cosθ-1) (2)V=mg(R-r)(cosθ-1) (2)

$\frac{d d}{dx dx} ((\frac{&PartialD; &PartialD; T T}{&PartialD; &PartialD; \overset{\cdot &Center Dot;}{θ θ}})) + + \frac{&PartialD; &PartialD; V V}{&PartialD; &PartialD; θ θ} = = 00 - - - - - - ((33))$

联立方程（1）、（2）、（3）解得该系统的运动平衡方程（4）。Simultaneous equations (1), (2), and (3) are solved to obtain the motion balance equation (4) of the system.

$m m ((R R - - r r)) \overset{\cdot \cdot \cdot \cdot}{θ θ} + + m m {r r}_{11}^{22} \frac{R R - - r r}{{r r}^{22}} \overset{\cdot \cdot \cdot \cdot}{θ θ} + + mg mg sin sin θ θ = = 00 - - - - - - ((44))$

$T T = = 22 π π \sqrt{\frac{g g}{(({r r}_{11}^{22} / / {r r}^{22} + + 11)) ((R R - - r r))}} - - - - - - ((55))$

由式（5）可以看出滚动式TMD自振周期与总质量无关，由R,r,r₁控制。单摆系统的自振周期同样与质量无关，若将其等效为为单摆系统，则等效摆长如式（6）。It can be seen from formula (5) that the natural vibration period of the rolling TMD has nothing to do with the total mass, and is controlled by R, r, r ₁ . The natural vibration period of a simple pendulum system is also independent of mass. If it is equivalent to a simple pendulum system, the equivalent pendulum length is as in formula (6).

l=(r₁ ²/r²+1)(R-r) (5)l=(r ₁ ² /r ² +1)(Rr) (5)

当需要相当长度的摆长时，只需使r₁远大于r，故滚动式TMD可以节省较大的安装空间。When a considerable length of pendulum is required, it is only necessary to make r ₁ much larger than r, so the rolling TMD can save a large installation space.

另一方面，若认为滚动式TMD的运动是在小角度范围内的平动，将其等效为质量弹簧系统，则等效质量与等效刚度分别如式（7）、式（8）所示。On the other hand, if the motion of the rolling TMD is considered to be a translation within a small angle range, and it is equivalent to a mass-spring system, then the equivalent mass and equivalent stiffness are as shown in Equation (7) and Equation (8), respectively Show.

${m m}_{eq eq} = = m m ((11 + + \frac{{r r}_{11}^{22}}{{r r}^{22}})) - - - - - - ((66))$

k_eq=mg/(R-r) (7)k _eq =mg/(Rr) (7)

该质量调谐阻尼器的等效质量主要来源于大质量圆盘的转动惯量，通过齿轮的约束使其发生转动。结构遭遇地震或者风振时，大质量圆盘发生转动，其产生的扭矩通过齿轮作用于支座，支座再将反力传递到结构上，以此达到减震的目的。The equivalent mass of the mass-tuned damper is mainly derived from the moment of inertia of the large-mass disc, which is constrained by the gear to make it rotate. When the structure encounters earthquake or wind vibration, the large-mass disc rotates, and the torque generated by it acts on the support through the gear, and the support transmits the reaction force to the structure, so as to achieve the purpose of shock absorption.

Claims

1. the rolling tuned mass damper is characterized in that, gear is fixed with big quality disk, and band tooth bar circular arc bearing is fixedly installed in the building structure, gear and the tooth bar engagement of being with tooth bar circular arc bearing; Big quality disk arranges multi-turn counterweight installing hole along radius; Dissipative damping liquid case or friction plate are installed in bottom at band tooth bar circular arc bearing.

2. rolling tuned mass damper according to claim 1 is characterized in that, the counterweight on the described big quality disk is installed in centrosymmetric mode; The position of counterweight is adjustable.

3. rolling tuned mass damper according to claim 1 is characterized in that, block is installed at the two ends of described band tooth bar circular arc bearing.

4. rolling tuned mass damper according to claim 1 is characterized in that, the quantity of described big quality disk is even number, is installed in the both sides of gear respectively.

5. rolling tuned mass damper according to claim 1 is characterized in that, the quantity of described gear is even number, is installed in the both sides of big quality disk respectively.