WO2016169124A1 - 一种阻尼钢筋连接器 - Google Patents
一种阻尼钢筋连接器 Download PDFInfo
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- WO2016169124A1 WO2016169124A1 PCT/CN2015/082962 CN2015082962W WO2016169124A1 WO 2016169124 A1 WO2016169124 A1 WO 2016169124A1 CN 2015082962 W CN2015082962 W CN 2015082962W WO 2016169124 A1 WO2016169124 A1 WO 2016169124A1
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- damping
- cylinder
- steel bar
- connector
- bar connector
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
Definitions
- the invention relates to the field of assembled structure and structural vibration control in the civil engineering profession, in particular to a steel bar connector with damping characteristics.
- Rebar connectors including sleeve-type connectors and mechanical connectors, have been widely used in the connection of pre-assembled members between steel bars, with the advantages of stable axial load transfer, convenient construction, green construction, etc. Vibration is a relatively mature vibration control method. Dampers designed and installed with damping damping theory are widely used in various buildings around the world. The damping materials used in the dampers are various and have metal. Damping materials, high molecular polymers and their composite materials and viscous fluids.
- a damper bar connector can be constructed by combining a rebar connector with a damping material.
- the damper bar connector has less stiffness than the conventional rebar connector, but has excellent damping energy consumption characteristics, which can transform the rebar connector in the fabricated structure into numerous small dampers, which can significantly increase the overall
- the damping coefficient of the structure under normal use, the vertically connected damper bar connectors embedded in the component are mainly subjected to pressure, and the damper bar connector can be subjected to tensile force under the seismic load, and the damping material precedes the damping material.
- the invention provides a damping steel connector for connecting steel bars between assembled components and improving the seismic performance of the assembled building structure.
- the utility model relates to a damping steel bar connector, which comprises at least: an outer cylinder, a damping material and an inner cylinder;
- the outer cylinder is a cylindrical hollow cylinder body, and the cylinder body has a partition inside, and the cylinder body is evenly divided into two small cylinders which are not mutually connected Both ends of the outer cylinder are open;
- the inner cylinder is two cylindrical hollow cylinders, one end is closed and the other end is open; the damping material is disposed between the inner cylinder and the outer cylinder.
- At least one middle cylinder may be disposed, the middle cylinder is a cylindrical hollow cylinder, one end is closed, the other end is open, and a damping material is further disposed between the middle cylinder and the outer cylinder.
- the damper rebar connector is characterized in that the inner cylinder is connected to the steel bar.
- the utility model provides a damping steel bar connector, wherein a damping material is arranged between the cylinder and the cylinder, and the inner cylinder adopts the existing steel bar connection technology to connect the steel bars between the assembled components, and the component is subjected to the dynamic load.
- a damping material is arranged between the cylinder and the cylinder, and the inner cylinder adopts the existing steel bar connection technology to connect the steel bars between the assembled components, and the component is subjected to the dynamic load.
- the steel rod drives the inner cylinder and the connector to be relatively displaced, the shearing deformation of the damping material dissipates the energy.
- a fabricated component with a damper bar connector is installed.
- the energy of the damper bar connector is input to the vibration energy of the component, which is prior to the component yielding, which can reduce the building component under the seismic load.
- the stiffness and / or damping of the damper bar connector can be customized according to the material characteristics, geometric characteristics and the number of damping layers of the damping material according to the vibration characteristics of the building structure; the damping material of the damping bar connector will be prior to the connector under the load
- the other components of the present invention yield, so that the damper rebar connector of the present invention can adopt a cheaper and more convenient solution than the material and rebar connection technology of the conventional rebar connector;
- Reinforced connectors can be industrially produced in the factory, and in use, the existing mature steel connection technology (straight thread, grouting, etc.) can be used to connect the steel bars; the damping material can be made of materials with superelastic properties.
- the damper bar connector has a self-resetting function.
- Figure 1 is a schematic view showing the structure of the present invention
- Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
- Figure 3 is a cross-sectional view taken along line B-B of Figure 1;
- Figure 4 is a schematic view showing another structure of the present invention.
- outer cylinder 1 middle cylinder 2; damping material 3; inner cylinder 4; steel bar 5; straight thread 6 and grouting pipe 7; grouting 8.
- the reinforced steel connector according to the present invention may be used to connect the assembled members, that is, the reinforcing bars for the connecting members. Inserting the inner cylinder separately, followed by grouting or mechanical connection, when the member is subjected to dynamic load, the relative movement between the inner cylinder and the middle cylinder, the middle cylinder and the outer cylinder may cause the damping material sandwiched between the cylinders Dissipate energy.
- the invention provides a damping reinforcing bar connector which can be used for the connection between new fabricated building components, and can also be used for seismic strengthening of some existing fabricated buildings, as shown in Fig. 1, the damping reinforcing bar connector includes , outer cylinder 1, middle cylinder 2, damping material 3, inner cylinder 4. among them,
- the outer cylinder 1 is made of a metal material, and has a hollow cylinder as a whole, and has a partition in the middle of the cylinder, and divides the outer cylinder 1 into two parts which are bilaterally symmetrical.
- the inner cylinder 4 is a regular hollow metal cylinder which is sealed at one end and open at one end, and can be inserted into the outer cylinder 1 along both ends of the outer cylinder 1.
- the damping material 3 is a high-performance damping material having a certain damping and rigidity. As shown in FIG. 1 and FIG. 2, the damping material 3 is closely arranged in the gap between the inner cylinder and the outer cylinder, and simultaneously with the inner cylinder and the outer cylinder. Bonding.
- the damping material 3 can be made of a polymer material based on a composite material, a nano material material, a piezoelectric material and a high performance alloy material to provide sufficient damping and rigidity for the sleeve; Temperature-insensitive materials to avoid climatic changes cause the mechanical properties of the damping material 3 to fluctuate.
- the invention has various application modes, and can be combined with a plurality of steel bar connection modes.
- the inner cylinder can be threaded and processed into a form similar to a straight threaded sleeve, and the same part of the steel bar 5 needs to be connected.
- the thread is cut to make the inner cylinder and the steel bar have a straight thread connection;
- the inner cylinder can also be designed in the form of a grouting sleeve, and the grouting hole 7 is poured into the inner cylinder to realize the connection of the steel bars.
- the damper rebar connector of the present invention provides a damper connector for the fabricated structure, aiming at solving the seismic problem of the fabricated structure.
- the damper steel connector of the present invention is not a rigid joint of the reinforcing member, but adopts a flexible damping design idea to improve the seismic performance of the assembled structure.
- the suitable damping material can also make the assembled structure self-reset. The function can meet the needs of the assembled building structure to continue to use after the earthquake.
- the damping steel bar connector of the invention has a simple structure, the technology adopted is mature, can be industrialized production and construction, and has broad application prospects.
- damper bar connector of the present invention can be used in combination with other energy absorbing technologies to further enhance the seismic performance of the fabricated building structure.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Dampers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
一种阻尼钢筋连接器,至少包括:外筒(1)、阻尼材料(3)、内筒(4)。外筒(1)为圆柱中空筒体,筒体内部具有隔断,把筒体均匀地分为不互相通的两个小筒体,外筒(1)的两端均开放。内筒(4)为两个圆柱中空筒体,一端封闭,另一端开放。阻尼材料(3),设置在内筒(4)和外筒(1)之间。阻尼钢筋连接器可用于具有振动控制需求的装配式建筑构件之间的连接,当构件受动力荷载作用并发生相对位移时,阻尼钢筋连接器内的阻尼材料(3)会发生剪切变形而耗散能量。
Description
本发明涉及土木工程专业中的装配式结构及结构振动控制领域,尤其涉及一种具有阻尼特性的钢筋连接器。
钢筋连接器,包括套筒类连接器和机械连接器等,已被广泛应用于预装配式构件之间钢筋的连接,具有能稳定传递轴向荷载、施工便捷、绿色施工等优点;阻尼减振是目前比较成熟的一种振动控制方法,以阻尼减振理论设计并安装的阻尼器被广泛应用到世界各地的各类建筑物中,其中阻尼器中所采用的阻尼材料种类繁多,有金属类阻尼材料、高分子聚合物及其复合材料和粘滞流体等。
将钢筋连接器与阻尼材料相结合便可以构成阻尼钢筋连接器。阻尼钢筋连接器与传统的钢筋连接器相比,具有较小的刚度,但是具备优良的阻尼耗能特性,可将装配式结构中的钢筋连接器转化成无数个小型阻尼器,能显著增加整体结构的阻尼系数;在正常使用状态下,预埋在构件中的竖向连接的阻尼钢筋连接器主要受压力作用,而在地震荷载作用下阻尼钢筋连接器则可受拉力作用,阻尼材料先于套筒周围的建筑材料(如钢筋、混凝土)屈服并耗能,因此安装阻尼钢筋连接器能显著降低建筑构件损伤的概率;若阻尼材料选用具有超弹性特性的材料,还可使装配式结构变为柔性阻尼体系,具有自复位功能。
目前,传统的钢筋连接器在仅传递轴向荷载的情况下具有可靠的力学性能,而某些钢筋连接器,如灌浆套筒等,在复杂动力荷载作用下的力学性能的研究还处于起步阶段;某些构件中的钢筋连接器与周围材料的动力相互作用机理也尚不明确;国内采用传统钢筋连接器进行钢筋连接的装配式结构因受到地震荷载而破坏的案例较少,因此采用传统钢筋连接器的装配式结构的抗震性能尚存争议。
可见,现有的装配式构件连接技术尚不完善,还不能使装配式结构具有很好的抗震性能,制约了装配式结构的推广和广泛应用。因此,亟需一种能满足正常使用功能且振动控制效果优良、施工便捷、经济可靠的装配式构件连接器。
发明内容:
本发明提供了一种阻尼钢筋连接器,用以装配式构件之间钢筋的连接,提高装配式建筑结构的抗震性能。
一种阻尼钢筋连接器,至少包括:外筒、阻尼材料、内筒;所述外筒为圆柱中空筒体,筒体内部具有隔断,把筒体均匀地分为不互相通的两个小筒体,外筒的两端均开放;所述内筒为两个圆柱中空筒体,一端封闭,另一端开放;所述阻尼材料,设置在内筒和外筒之间。
进一步,还可以设置至少一个中筒,所述中筒为圆柱中空筒体,一端封闭,另一端开放,在中筒和外筒之间还设有阻尼材料。
所述一种阻尼钢筋连接器,其特征在于:内筒与钢筋连接。
本发明的有益效果如下:
本发明所提供的一种阻尼钢筋连接器,在筒与筒之间布置有阻尼材料,内筒采用现有的钢筋连接技术对装配式构件之间的钢筋进行连接,当构件受动力荷载的作用时,钢筋带动内筒与连接器发生相对位移,从而使阻尼材料发生剪切变形耗散能量。安装有阻尼钢筋连接器的装配式构件,当受到地震等动力荷载的作用时,阻尼钢筋连接器能耗散输入到构件的振动能量,先于构件屈服,可减小建筑构件在地震荷载作用下的损伤;阻尼钢筋连接器的刚度和/或阻尼可根据建筑结构的振动特性由阻尼材料的材料特性、几何特性和阻尼层的数量定制;荷载作用下阻尼钢筋连接器阻尼材料会先于连接器的其他部件屈服,因此本发明所述一种阻尼钢筋连接器相对于传统钢筋连接器所采用的材料及钢筋连接技术,可采用更加廉价和便捷的方案;阻尼
钢筋连接器可在工厂中产业化生产,而在使用时可以直接采用现有较为成熟的钢筋连接技术(直螺纹、灌浆等)对钢筋进行连接;阻尼材料可使用具有超弹性特性的材料,使阻尼钢筋连接器具有自复位功能。
图1是本发明的一种结构示意图;
图2是图1的A-A剖面图;
图3是图1的B-B剖面图;
图4是本发明的另一种结构示意图;
图中:外筒1;中筒2;阻尼材料3;内筒4;钢筋5;直螺纹6和灌浆导管7;灌浆料8。
当装配式建筑结构具有振动控制需求时,尤其是在需要竖向连接的构件处,可采用本发明所述一种阻尼钢筋连接器对装配式构件之间进行连接,即将用于连接构件的钢筋分别***所述内筒,之后进行灌浆或机械连接,当构件受到动力荷载作用时,内筒与中筒、中筒和外筒之间可发生相对运动使夹在各筒体之间的阻尼材料耗散能量。本发明提供的一种阻尼钢筋连接器,可用于新建装配式建筑构件之间的连接,也可用于某些既有装配式建筑的抗震加固,如图1所示,该阻尼钢筋连接器中包括,外筒1、中筒2、阻尼材料3、内筒4。其中,
外筒1为金属材质,整体为中空圆柱体,柱体中间有隔断,将外筒1分为左右对称的两部分。
内筒4为一端密闭、一端开放的规则中空金属圆柱体,可沿外筒1的两端全部***外筒1。
阻尼材料3为具有一定阻尼和刚度的高性能阻尼材料,如图1和图2所示,阻尼材料3紧密布置于内筒和外筒之间的缝隙中,并同时与内筒和外筒之间粘合。
较佳的,阻尼材料3可采用以高分子聚合物为基体的复合材料、纳米材料以、压电材料和高性能合金材料等,为套筒提供足够的阻尼与刚度;阻尼材料3宜采用对温度不敏感的材料,以避免气候变化使阻尼材料3的力学性能发生波动。
本发明有多种应用方式,可与多种钢筋连接方式相结合,如图1所示,可将内筒开凿螺纹,加工成类似于直螺纹套筒的形式,将钢筋5需要连接的部分同样开凿螺纹,使内筒与钢筋进行直螺纹连接;也可将内筒设计成灌浆套筒的形式,开凿灌浆孔7将灌浆料8灌入内筒中来实现钢筋的连接。
本发明所述一种阻尼钢筋连接器,为装配式结构提供了一种阻尼连接器,旨在解决装配式结构的抗震问题。本发明所述阻尼钢筋连接器不是一味的加强构件连接处的刚度,而是采用了柔性阻尼的设计思路来提高装配式结构的抗震性能,采用合适的阻尼材料还可使装配式结构具有自复位功能,可满足装配式建筑结构震后继续使用的需求。本发明所述一种阻尼钢筋连接器结构形式简单,所采用的技术成熟,可以产业化生产与施工,具有广阔的应用前景。
当然,本发明所述一种阻尼钢筋连接器可与其他消能减振技术联合使用,以进一步增强装配式建筑结构的抗震性能。
显然,本领域内的研究人员可在本发明精神范围内对本发明所述一种阻尼钢筋连接器进行改动或变形,但若这些改动或变形在本发明的权利要求内,则本发明自动包含这些改动或变形。
Claims (3)
- 一种阻尼钢筋连接器,其特征在于,至少包括:外筒、阻尼材料、内筒;所述外筒为圆柱中空筒体,筒体内部具有隔断,把筒体均匀地分为不互相通的两个小筒体,外筒的两端均开放;所述内筒为两个圆柱中空筒体,一端封闭,另一端开放;所述阻尼材料,设置在内筒和外筒之间。
- 如权利要求1所述一种阻尼钢筋连接器,其特征在于:至少设置一个中筒,所述中筒为圆柱中空筒体,一端封闭,另一端开放,在中筒和外筒之间还设有阻尼材料。
- 如权利要求1所述一种阻尼钢筋连接器,其特征在于:内筒与钢筋连接。
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US15/095,371 US9410322B1 (en) | 2015-04-20 | 2016-04-11 | Damping splice sleeve |
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Cited By (2)
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CN111614049A (zh) * | 2020-06-10 | 2020-09-01 | 大连理工大学 | 一种多维位移放大剪切型阻尼间隔棒 |
CN115341654A (zh) * | 2022-08-23 | 2022-11-15 | 安徽省建筑科学研究设计院 | 一种带摩擦阻尼器的自复位耗能腋撑 |
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CN107012957A (zh) * | 2017-04-27 | 2017-08-04 | 四川农业大学 | 一种新型填充墙与框架主体的半刚性连接工艺及装置 |
CN107842106A (zh) * | 2017-06-30 | 2018-03-27 | 宁波普利凯建筑科技有限公司 | 装配式梁、墙板组件 |
CN108412054A (zh) * | 2018-05-03 | 2018-08-17 | 南京林业大学 | 一种适用于木结构梁柱连接的新型阻尼连接节点 |
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CN101845856B (zh) * | 2010-05-14 | 2012-05-23 | 北京工业大学 | 一种置于钢筋混凝土构件中的阻尼减震装置 |
CN204081276U (zh) * | 2014-10-20 | 2015-01-07 | 吴旦英 | 一种建筑用钢筋快速连接接头 |
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CN111614049A (zh) * | 2020-06-10 | 2020-09-01 | 大连理工大学 | 一种多维位移放大剪切型阻尼间隔棒 |
CN115341654A (zh) * | 2022-08-23 | 2022-11-15 | 安徽省建筑科学研究设计院 | 一种带摩擦阻尼器的自复位耗能腋撑 |
CN115341654B (zh) * | 2022-08-23 | 2023-08-15 | 安徽省建筑科学研究设计院 | 一种带摩擦阻尼器的自复位耗能腋撑 |
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