WO2020181794A1 - 一种装配式自复位节点 - Google Patents

一种装配式自复位节点 Download PDF

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Publication number
WO2020181794A1
WO2020181794A1 PCT/CN2019/115339 CN2019115339W WO2020181794A1 WO 2020181794 A1 WO2020181794 A1 WO 2020181794A1 CN 2019115339 W CN2019115339 W CN 2019115339W WO 2020181794 A1 WO2020181794 A1 WO 2020181794A1
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Prior art keywords
vertical shaft
support column
plane
steel
universal wheels
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PCT/CN2019/115339
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English (en)
French (fr)
Inventor
杨伟松
王长理
许卫晓
于德湖
张纪刚
宁宁
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青岛理工大学
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Publication of WO2020181794A1 publication Critical patent/WO2020181794A1/zh

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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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21—Connections specially adapted therefor
    • 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
    • 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

Definitions

  • the invention belongs to the field of architecture, and in particular relates to an assembled self-resetting node.
  • the nodes currently used are improved compared to the traditional rigid connection nodes, but they also have many problems.
  • problems are the following:
  • the dry connection node is characterized by high efficiency and avoids wet work; but the integrity is poor, and the deformation and damage of the structure are mainly concentrated in the connection part of the prefabricated component. Therefore, the seismic performance is poor during use, and the high intensity area limited use.
  • Prestressed beam-column joints representative forms are Japanese pre-compressed assembled joints and prestressed combined joints.
  • Pre-stress mainly plays two roles, providing pre-compression to make beam-column reliable connection; providing restoring force, making nodes have a strong ability to recover from deformation.
  • this simple pre-stressed connection is too rigid and often has poor seismic resistance, so other energy-consuming devices or measures need to be added, but it also causes complicated structure, inconvenient construction, and poor economy.
  • Wet connection node (assembly of integral beam-column node), mainly refers to the prefabricated beam components in the node area are connected by steel bars and concrete is poured on the construction site to form a complete structure; but wet work is required, and the performance is limited by the quality of the site construction, and the assembly is not fully utilized The advantages.
  • the present invention provides a fabricated self-resetting node, which can effectively solve the problem of the prior art that the seismic performance of the beam-column node and the convenience of its construction are not well balanced.
  • an assembled self-resetting node including support columns, beams, prestressed steel bars, universal wheels, corbels, rubber gaskets and angle steel; the middle end of the support column A corbel is provided, the top of the corbel is provided with two steel grooves, a beam is provided above the corbel, and two universal wheels are provided at the bottom of the beam, the universal wheel includes a roller , A first vertical shaft, a connecting shaft and a second vertical shaft, the center of the roller is horizontally penetrated with a central shaft, the top of the central shaft of the roller is fixedly connected to the bottom of the first vertical shaft, the first vertical shaft The top end is connected to the bottom end of the second vertical shaft through a connecting shaft, and both ends of the connecting shaft are hingedly connected to the top end of the first vertical shaft and the bottom end of the second vertical shaft, and the top end of the second vertical shaft is vertically fixed Connected to the bottom of the beam, the bottom of the beam is also provided with an assembled self-resetting node, including support columns, beams, prest
  • the channel A and the channel B is connected and there is a prestressed steel bar penetrating between the two; the side end of the beam and the side wall of the support column are filled with magnesium phosphate cement mortar mixed with carbon fiber, and the top of the beam and the support column They are fixedly connected by angle steel; the angle steel and the prestressed steel bars are made of shape memory alloy.
  • the universal wheel is used to control the displacement of the beam end under the action of the earthquake, so as to avoid the damage of the support column caused by the displacement of the beam;
  • the angle steel made of shape memory alloy makes the connection between the beam and the support column restore to the original after the earthquake is destroyed
  • Use shape memory alloy as the prestressed steel bar to ensure that after the earthquake is over, the beams and support columns will return to their pre-earthquake shape on the basis of a certain strength;
  • the end side of the beam and the side wall of the support column are mixed with
  • the carbon fiber magnesium phosphate cement mortar is connected to make it have sufficient toughness to ensure that the beam can produce a certain displacement after earthquake damage to consume energy, and at the same time, it can be convenient for later repair.
  • the present invention adopts dry construction.
  • the beams and support columns are poured separately and then assembled, which can accelerate the construction speed without being affected by the environment of the construction site.
  • the specific steps are as follows:
  • the prefabricated self-resetting system has the advantages of short construction period, low energy consumption, and low environmental pollution.
  • magnesium phosphate cement mortar is arranged between the beam and the supporting column, which increases the integrity and seismic performance of the node, which is compared with the existing Compared with the technical dry connection node, although the structural damage will still occur at the connection part, the overall structural damage is reduced by energy consumption, and it is also more convenient to repair;
  • the magnesium phosphate cement mortar mixed with carbon fiber connects the beam and column It can avoid the excessive rigidity of the simple pre-stressed beam-column nodes in the prior art; the present invention only needs a little magnesium phosphate cement mortar at the connection, and is not affected by the construction site environment.
  • the node uses a self-resetting shape
  • the angle steel and prestressed steel bars of memory alloy, rubber gaskets and universal wheels realize the controllable damage and can be repaired in time and conveniently under the premise of saving costs.
  • the assembled self-resetting node provided by the present invention can achieve basically no damage to the beam and support column after the earthquake. Because the prestressed steel bars always maintain elasticity, the node can return to the original position after the earthquake, and has a good seismic effect, effectively solving the prior art It has a good market prospect because it cannot take into account the convenience of construction and superior seismic performance at the same time.
  • the angle steel has a first end plane, a middle plane and a second end plane, the extension line of the first end plane and the extension line of the second end plane are perpendicular to each other, and the middle plane is set at Between the first and second end planes.
  • intermediate plane and the first end plane form an angle of 30°-60°.
  • both the first end plane and the second end plane are provided with bolt holes for socketing bolts
  • the side walls of the support column and the top of the beam are both provided with holes for connecting with the bolts, so The first end plane and the side wall of the support column, and the second end plane and the top of the beam are all fixedly connected by bolts penetrating through the bolt holes and holes.
  • the center of the bottom of the steel groove is a flat surface, and the side wall is an arc surface.
  • the horizontal plane of the steel groove is used to carry the universal wheel, and the universal wheel rotates in the steel groove.
  • the present invention has the following beneficial effects: (1) All parts of the assembled self-resetting node of the present invention can be completed by assembly, and it has the advantages of short construction period, low energy consumption and low environmental pollution of the assembled self-resetting system, and no Will be constrained by the environment; (2) In the present invention, the displacement of the beam end under the action of the earthquake can be controlled by the universal wheel, and the damage caused by the displacement to the support column is reduced. The angle steel and the precast made of shape memory alloy are used. The stress steel bars enable the joints to recover their original shape after being displaced by the earthquake. Magnesium phosphate cement mortar mixed with carbon fiber is set between the beams and columns.
  • the magnesium phosphate cement mortar mixed with carbon fiber can avoid the excessive rigidity of the simple prestressed beam-column joints in the prior art.
  • the present invention only needs a little magnesium phosphate cement mortar at the joint, and is not affected by the environment of the construction site; (3)
  • the present invention also takes into account the advantages of the assembly-type self-resetting system such as the convenience of construction and good seismic performance, It has broad market application prospects.
  • Figure 1 is a schematic front view of an embodiment provided by the present invention.
  • Fig. 2 is a schematic sectional view of a part of the universal wheel and beam assembly in Fig. 1;
  • Fig. 3 is a schematic diagram of a right side partial sectional view of a beam, a support column, and a corbel combined part in the embodiment provided by the present invention
  • Figure 4 is a schematic bottom view of the arc-shaped chute at the end of the beam
  • Figure 5 is a schematic cross-sectional view of the top part of the corbel and the column
  • Supporting column 11 Channel B 2, Beam 21, Arc chute 22, Channel A 3, Prestressed steel bar 4.
  • Universal wheel 41 Roller 42, First vertical axis 43, Connecting axis 44, No. Two vertical axes 5.
  • the assembled self-resetting node of the present invention includes a supporting column 1, a beam 2, a prestressed steel bar 3, a universal wheel 4, a corbel 5, a rubber gasket 6 and an angle steel 7;
  • the middle end of the support column 1 is provided with a corbel 5, the top of the corbel 5 is provided with two steel grooves 51, the corbel 5 is provided with a beam 2, the beam 2
  • Two universal wheels 4 are provided at the bottom.
  • the universal wheels 4 include a roller 41, a first vertical shaft 42, a connecting shaft 43 and a second vertical shaft 44.
  • the center of the roller 41 is horizontally penetrated with a central rotating shaft, so The top of the central shaft of the roller 41 is fixedly connected to the bottom of the first vertical shaft 42.
  • the top of the first vertical shaft 42 is connected to the bottom of the second vertical shaft 44 through a connecting shaft 43. Both ends of the connecting shaft 43 They are respectively hingedly connected to the top end of the first vertical shaft 42 and the bottom end of the second vertical shaft 44.
  • the top end of the second vertical shaft 44 is vertically and fixedly connected to the bottom of the beam 2, and the bottom of the beam 2 is also provided with an arc shape.
  • the chute 21, the arc chute 21 is a circle with the center axis of the second vertical shaft 44 as the center, and the horizontal distance from the center axis of the first vertical shaft 42 to the center axis of the second vertical shaft 44 as the radius ,
  • the top of the first vertical shaft 42 is slidably arranged in the arc chute 21, the roller 41 is rotatably arranged in the steel groove 51, and a rubber gasket 6 is fixedly arranged between the beam 2 and the corbel 5
  • the rubber gasket 6 is arranged on the periphery of the universal wheel 4, the center of the beam 2 is provided with a channel A22 along the length of the beam 2, and the center of the support column 1 is provided with a channel B11, the channel A22 and The channel B11 is connected and there is a prestressed steel bar 3 passing through the two; the side end of the beam 2 and the side wall of the support column 1 are filled with magnesium phosphate cement mortar 8 mixed with carbon fiber, and the beam 2
  • the universal wheel 4 is used to control the displacement of the end of the beam 2 under the action of the earthquake, so as to prevent the displacement of the beam 2 from destroying the support column 1;
  • the angle steel 7 made of shape memory alloy makes the beam 2 and the support column 1 connect in Restore to the original position after earthquake damage;
  • shape memory alloy as prestressed steel bar 3 to ensure that after the earthquake ends, beam 2 and support column 1 return to their pre-earthquake shape on a certain strength basis;
  • the end side of beam 2 The side walls of the support column 1 are connected by magnesium phosphate cement mortar 8 mixed with carbon fiber, so that it has sufficient toughness to ensure that the beam 2 can produce a certain displacement after earthquake damage to consume energy, and at the same time, it can facilitate later repair.
  • the present invention adopts dry construction.
  • the beam 2 and the support column 1 are respectively poured first, and then assembled, which can speed up the construction speed without being affected by the construction site environment.
  • the specific steps are as follows:
  • the magnesium phosphate cement mortar 8 mixed with carbon fiber is first poured between the ends of the support column 1 and the beam 2, and then the prestressed steel bar 3 is used to penetrate the channel A22 and the channel B11 Finally, the angle steel 7 is fixedly connected between the beam 2 and the support column 1 by bolts, and the rubber gasket 6 is filled around the universal wheel 4 for maintenance and damping.
  • the prefabricated self-resetting system has the advantages of short construction period, low energy consumption, and low environmental pollution.
  • magnesium phosphate cement mortar 8 is arranged between the beam 2 and the support column 1, which increases the integrity and seismic performance of the node.
  • the structural damage still occurs at the connection part, the overall structure damage is reduced by energy consumption, and maintenance is more convenient; in addition, magnesium phosphate cement mortar mixed with carbon fiber Connecting beams and columns can avoid the excessive rigidity of simple prestressed beam-column nodes in the prior art; the present invention only requires a little magnesium phosphate cement mortar 8 at the connection point, and is not affected by the environment of the construction site.
  • the node uses a The self-resetting shape memory alloy angle steel 7 and prestressed steel bar 3, rubber gasket 6 and universal wheel 4 realize the controllable damage and can be repaired in time and conveniently under the premise of saving costs.
  • the assembled self-resetting node provided by the present invention can achieve basically no damage to the beam 2 and the support column 1 after the earthquake. Because the prestressed steel bar 3 always maintains elasticity, the node can return to the original position after the earthquake, and has a good seismic effect, which effectively solves the problem In the prior art, the convenience of construction and the superior seismic performance cannot be taken into consideration at the same time, and it has a good market prospect.
  • the angle steel 7 has a first end plane 71, a middle plane 72 and a second end plane 73, and the extension line of the first end plane 71 and the extension line of the second end plane 73 are perpendicular to each other,
  • the intermediate plane 72 is arranged between the first and second end planes.
  • middle plane 72 and the first end plane 71 form an included angle of 30°-60°.
  • first end plane 71 and the second end plane 73 are both provided with bolt holes for socketing bolts, and the side walls of the support column 1 and the top of the beam 2 are both provided with bolt holes for connecting with bolts.
  • the bolt 9 penetrates the bolt hole and the hole to achieve a fixed connection.
  • the center of the bottom of the steel groove 51 is a flat surface, and the side wall is an arc surface.
  • the horizontal plane of the steel groove 51 is used to carry the universal wheel 4, and the universal wheel 4 rotates in the steel groove 51.

Abstract

本发明属于建筑领域，尤其涉及一种装配式自复位节点，包括支撑柱、梁、预应力钢筋、万向轮、牛腿、橡胶垫片和角钢；支撑柱的中端设置有牛腿，牛腿的顶部开设有两个钢制凹槽，梁的底部活动连接有两个万向轮，两个万向轮的底部分别活动设置于两个钢制凹槽内，橡胶垫片固定连接于梁的底部和牛腿的顶部之间的万向轮外围；梁的中央和支撑柱的中央贯通连接一预应力钢筋；梁的侧边端部与支撑柱的侧壁之间填充有掺有碳纤维的磷酸镁水泥砂浆，梁的顶部与支撑柱之间通过角钢固定连接；角钢和预应力钢筋均为形状记忆合金材质制作。本发明能有效解决现有技术中梁柱节点的抗震性能和其施工的便捷性不被良好兼顾的问题。

Description

一种装配式自复位节点 技术领域
本发明属于建筑领域，尤其涉及一种装配式自复位节点。
背景技术
随着城乡建设的快速发展，对建筑安全性的要求也日益提高。传统的现浇钢筋混凝土结构构件之间一般采用刚性连接节点，在地震作用下通过结构自身的开裂、变形来耗散地震力，在罕遇地震即使实现“大震不倒”，也将遭受严重损伤和难以恢复的变形，一般很难在震后快速恢复。
目前采用的节点有较传统的刚性连接节点有所改善，但却一样具有很多问题，现列举如下：
1、干式连接节点，特点是高效，避免了湿作业；但整体性较差，结构的变形和损伤主要集中在预制构件的连接部位，因此，在使用过程中抗震性能较差，高烈度区限制使用。
2、预应力梁柱节点，代表形式为日本预压装配式节点，预应力组合式节点。预应力主要发挥两个作用，提供预压力，使得梁柱可靠连接；提供恢复力，使得节点具有很强的变形恢复能力。然而这种单纯预应力连接因为过于刚性，往往抗震性较差，因而需要附加其他耗能装置或措施，但是又造成构造复杂，施工不便，经济性不好。
3、湿式连接节点(装配整体式梁柱节点)，主要指节点区域预制梁构件通过钢筋连接、施工现场浇筑混凝土形成完整结构；但需要湿作业，性能受到现场施工质量的限制，没有充分发挥装配的优势。
可见，现有技术中节点的抗震性能和其施工的便捷性不能得到良好的兼顾，所以兼顾梁柱节点处施工的便捷性以及其良好的抗震性能的研究方向将会有重大的实际工程价值。
发明内容
根据以上现有技术的不足，本发明提供了一种装配式自复位节点，其能有效解决现有技术中梁柱节点的抗震性能和其施工的便捷性不被良好兼顾的问题。
本发明解决的技术问题采用的技术方案为：一种装配式自复位节点，包括支撑柱、梁、预应力钢筋、万向轮、牛腿、橡胶垫片和角钢；所述支撑柱的中端设置有牛腿，所述牛腿的顶部开设有两个钢制凹槽，所述牛腿的上方设置有梁，所述梁的底部设置有两个万向轮，所述万向轮包括滚轮、第一竖轴、连接轴和第二竖轴，所述滚轮的中心水平贯穿设置有中心转轴，所述滚轮的中心转轴顶部固定连接于第一竖轴的底部，所述第一竖轴的顶端通过连接轴与第二竖轴的底端相连，所述连接轴的两端分别与第一竖轴的顶端、第二竖轴的底端铰链连接，所述第二竖轴的顶端垂直固定连接于梁的底部，所述梁的底部还设置有弧形滑槽，所述弧形滑槽是以第二竖轴的中心轴线为中心，以第一竖轴的中心轴线到第二竖轴的中心轴线的水平距离为半径的圆形，所述第一竖轴的顶部滑动设置于弧形滑槽内，所述滚轮转动设置于钢制凹槽内，所述梁和牛腿之间固定设置有橡胶垫片，所述橡胶垫片设置在万向轮的外围，所述梁的中央沿梁的长度方向开设有通道A，所述支撑柱的中央开设有通道B，所述通道A与通道B相连通且两者内贯穿设置有一预应力钢筋；所述梁的侧边端部与支撑柱的侧壁之间填充有掺有碳纤维的磷酸镁水泥砂浆，所述梁的顶部与支撑柱之间通过角钢固定连接；所述角钢和预应力钢筋均为形状记忆合金材质制作。
采用万向轮来控制梁端在地震作用下发生的位移，从而避免梁的位移作用对支撑柱产生破坏；用形状记忆合金制作的角钢使得梁与支撑柱的连接在地震作用破坏之后恢复到原来的位置；用形状记忆合金作为预应力钢筋能够保证地震结束后，梁和支撑柱在一定强度的基础上恢复到震前的形态；梁的端部侧面与支撑柱的侧壁之间通过掺有碳纤维的磷酸镁水泥砂浆连接，使其具有足够的韧性保证梁在地震破坏后能够产生一定的位移来耗能，同时可以方便后期修复。
本发明采用的是干法施工，先分别浇筑好梁和支撑柱，然后再组装，这样既能加快施工速度，又不受施工现场环境的影响，具体的步骤如下：
(1)与普通混凝土浇筑时相同，预留预应力钢筋所在位置的通道A和通道B，并在梁的顶部预留出角钢7连接所需螺栓的孔道，并在梁的两端底部设置上万向轮；
(2)浇筑支撑柱时，需加强牛腿处配筋，同时预埋用于万向轮活动的钢制凹槽；
(3)在支撑柱和梁组装时，首先用掺有碳纤维的磷酸镁水泥砂浆浇筑至支撑柱和梁的端部之间，然后用预应力钢筋贯通通道A和通道B，最后通过用螺栓将角钢固定连接到梁和支撑柱之间，万向轮周围用橡胶垫片填充，起维护和阻尼作用。
装配式自复位体系具有工期短、能源消耗少、环境污染小等优点，本发明中通过在梁和支撑柱之间设置了磷酸镁水泥砂浆，增加了节点的整体性和抗震性能，与现有技术的干式连接节点相比，虽然结构的损伤仍会发生在连接部位，但通过耗能更加减轻整体结构的损伤，同时也更加方便维修；此外，掺有碳纤维的磷酸镁水泥砂浆连接梁柱能够避免现有技术中单纯预应力梁柱节点过于刚性的情况；本发明只需要连接处的一点磷酸镁水泥砂浆，并不受施工现场环境 的影响，此外，节点处使用了可自复位的形状记忆合金的角钢和预应力钢筋以及橡胶垫片和万向轮，实现了损伤可控，在节省成本的前提下能够进行及时方便地修复。
本发明所提供的装配式自复位节点能够实现震后梁和支撑柱基本无破坏，因预应力钢筋始终保持弹性，震后节点能回复到原来位置，具有良好的抗震效果，有效解决了现有技术中不能同时兼顾施工便捷和抗震优越性能的情况，具有良好的市场前景。
进一步地，所述角钢具有第一端部平面、中间平面和第二端部平面，所述第一端部平面的延长线与第二端部平面的延长线相互垂直，所述中间平面设置于第一、二端部平面之间。
进一步地，所述中间平面与第一端部平面呈夹角为30°～60°。
进一步地，所述第一端部平面和第二端部平面上均开设有用于套置螺栓的螺栓孔，所述支撑柱的侧壁和梁的顶部均开设有用于与螺栓连接的孔道，所述第一端部平面与支撑柱的侧壁之间、第二端部平面与梁的顶部之间均通过螺栓贯穿螺栓孔和孔道实现固定连接。
进一步地，所述钢制凹槽的底部中央为平面设置，其侧壁为弧形面。钢制凹槽的水平面用于承载万向轮，万向轮在钢制凹槽内转动。
本发明具有以下有益效果：(1)本发明的装配式自复位节点中的各个部位均可通过组装完成，具有装配式自复位体系的工期短、能源消耗少以及环境污染小的优点，而且不会受到环境的约束；(2)本发明中通过万向轮能够控制梁端在地震作用下发生的位移，减小该位移对支撑柱产生的破坏，通过使用形状记忆合金材质制作的角钢和预应力钢筋，使得节点在受到地震影响产生位移后依然能够恢复原来的形态；在梁柱之间设置了掺有碳纤维的磷酸镁水泥砂浆， 与现有技术的干式连接节点相比，虽然结构的损伤仍会发生在连接部位，但通过耗能更加减轻整体结构的损伤，同时也更加方便维修，此外，掺有碳纤维的磷酸镁水泥砂浆连接梁柱能够避免现有技术中单纯预应力梁柱节点过于刚性的情况，本发明只需要连接处的一点磷酸镁水泥砂浆，并不受施工现场环境的影响；(3)本发明同时兼顾了装配式自复位体系的施工便捷性等优点以及良好的抗震性能，具有广阔的市场应用前景。
附图说明
图1是本发明所提供实施例的正视示意图；
图2是图1中万向轮和梁组合部分剖视示意图；
图3是本发明所提供实施例中梁、支撑柱、牛腿组合部分右视部分剖视示意图；
图4是梁端部的弧形滑槽的仰视示意图；
图5是牛腿和柱的俯视部分剖视示意图；
图中：1、支撑柱 11、通道B 2、梁 21、弧形滑槽 22、通道A 3、预应力钢筋 4、万向轮 41、滚轮 42、第一竖轴 43、连接轴 44、第二竖轴 5、牛腿 51、钢制凹槽 6、橡胶垫片 7、角钢 71、第一端部平面 72、中间平面 73、第二端部平面 8、磷酸镁水泥砂浆 9、螺栓。
具体实施方式
下面结合附图对本发明做进一步描述。
实施例一：
如图1～图5所示，本发明所述的一种装配式自复位节点，包括支撑柱1、梁2、预应力钢筋3、万向轮4、牛腿5、橡胶垫片6和角钢7；所述支撑柱1的 中端设置有牛腿5，所述牛腿5的顶部开设有两个钢制凹槽51，所述牛腿5的上方设置有梁2，所述梁2的底部设置有两个万向轮4，所述万向轮4包括滚轮41、第一竖轴42、连接轴43和第二竖轴44，所述滚轮41的中心水平贯穿设置有中心转轴，所述滚轮41的中心转轴顶部固定连接于第一竖轴42的底部，所述第一竖轴42的顶端通过连接轴43与第二竖轴44的底端相连，所述连接轴43的两端分别与第一竖轴42的顶端、第二竖轴44的底端铰链连接，所述第二竖轴44的顶端垂直固定连接于梁2的底部，所述梁2的底部还设置有弧形滑槽21，所述弧形滑槽21是以第二竖轴44的中心轴线为中心，以第一竖轴42的中心轴线到第二竖轴44的中心轴线的水平距离为半径的圆形，所述第一竖轴42的顶部滑动设置于弧形滑槽21内，所述滚轮41转动设置于钢制凹槽51内，所述梁2和牛腿5之间固定设置有橡胶垫片6，所述橡胶垫片6设置在万向轮4的外围，所述梁2的中央沿梁2的长度方向开设有通道A22，所述支撑柱1的中央开设有通道B11，所述通道A22与通道B11相连通且两者内贯穿设置有一预应力钢筋3；所述梁2的侧边端部与支撑柱1的侧壁之间填充有掺有碳纤维的磷酸镁水泥砂浆8，所述梁2的顶部与支撑柱1之间通过角钢7固定连接；所述角钢7和预应力钢筋3均为形状记忆合金材质制作。
采用万向轮4来控制梁2端在地震作用下发生的位移，从而避免梁2的位移作用对支撑柱1产生破坏；用形状记忆合金制作的角钢7使得梁2与支撑柱1的连接在地震作用破坏之后恢复到原来的位置；用形状记忆合金作为预应力钢筋3能够保证地震结束后，梁2和支撑柱1在一定强度的基础上恢复到震前的形态；梁2的端部侧面与支撑柱1的侧壁之间通过掺有碳纤维的磷酸镁水泥砂浆8连接，使其具有足够的韧性保证梁2在地震破坏后能够产生一定的位移来耗能，同时可以方便后期修复。
本发明采用的是干法施工，先分别浇筑好梁2和支撑柱1，然后再组装，这样既能加快施工速度，又不受施工现场环境的影响，具体的步骤如下：
(1)与普通混凝土浇筑时相同，预留预应力钢筋3所在位置的通道A22和通道B11，并在梁2的顶部预留出角钢7连接所需螺栓9的孔道，并在梁2的两端底部设置上万向轮4；
(2)浇筑支撑柱1时，需加强牛腿5处配筋，同时预埋用于万向轮4活动的钢制凹槽；
(3)在支撑柱1和梁2组装时，首先用掺有碳纤维的磷酸镁水泥砂浆8浇筑至支撑柱1和梁2的端部之间，然后用预应力钢筋3贯通通道A22和通道B11，最后通过用螺栓将角钢7固定连接到梁2和支撑柱1之间，万向轮4周围用橡胶垫片6填充，起维护和阻尼作用。
装配式自复位体系具有工期短、能源消耗少、环境污染小等优点，本发明中通过在梁2和支撑柱1之间设置了磷酸镁水泥砂浆8，增加了节点的整体性和抗震性能，与现有技术的干式连接节点相比，虽然结构的损伤仍会发生在连接部位，但通过耗能更加减轻整体结构的损伤，同时也更加方便维修；此外，掺有碳纤维的磷酸镁水泥砂浆连接梁柱能够避免现有技术中单纯预应力梁柱节点过于刚性的情况；本发明只需要连接处的一点磷酸镁水泥砂浆8，并不受施工现场环境的影响，此外，节点处使用了可自复位的形状记忆合金的角钢7和预应力钢筋3以及橡胶垫片6和万向轮4，实现了损伤可控，在节省成本的前提下能够进行及时方便地修复。
本发明所提供的装配式自复位节点能够实现震后梁2和支撑柱1基本无破坏，因预应力钢筋3始终保持弹性，震后节点能回复到原来位置，具有良好的抗震效果，有效解决了现有技术中不能同时兼顾施工便捷和抗震优越性能的情 况，具有良好的市场前景。
进一步地，所述角钢7具有第一端部平面71、中间平面72和第二端部平面73，所述第一端部平面71的延长线与第二端部平面73的延长线相互垂直，所述中间平面72设置于第一、二端部平面之间。
进一步地，所述中间平面72与第一端部平面71呈夹角为30°～60°。
进一步地，所述第一端部平面71和第二端部平面73上均开设有用于套置螺栓的螺栓孔，所述支撑柱1的侧壁和梁2的顶部均开设有用于与螺栓连接的孔道，所述第一端部平面71与支撑柱1的侧壁之间、第二端部平面73与梁2的顶部之间均通过螺栓9贯穿螺栓孔和孔道实现固定连接。
进一步地，所述钢制凹槽51的底部中央为平面设置，其侧壁为弧形面。钢制凹槽51的水平面用于承载万向轮4，万向轮4在钢制凹槽51内转动。
以上所述为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书以及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (5)

  1. 一种装配式自复位节点，其特征在于：包括支撑柱(1)、梁(2)、预应力钢筋(3)、万向轮(4)、牛腿(5)、橡胶垫片(6)和角钢(7)；所述支撑柱(1)的中端设置有牛腿(5)，所述牛腿(5)的顶部开设有两个钢制凹槽(51)，所述牛腿(5)的上方设置有梁(2)，所述梁(2)的底部设置有两个万向轮(4)，所述万向轮(4)包括滚轮(41)、第一竖轴(42)、连接轴(43)和第二竖轴(44)，所述滚轮(41)的中心水平贯穿设置有中心转轴，所述滚轮(41)的中心转轴顶部固定连接于第一竖轴(42)的底部，所述第一竖轴(42)的顶端通过连接轴(43)与第二竖轴(44)的底端相连，所述连接轴(43)的两端分别与第一竖轴(42)的顶端、第二竖轴(44)的底端铰链连接，所述第二竖轴(44)的顶端垂直固定连接于梁(2)的底部，所述梁(2)的底部还设置有弧形滑槽(21)，所述弧形滑槽(21)是以第二竖轴(44)的中心轴线为中心，以第一竖轴(42)的中心轴线到第二竖轴(44)的中心轴线的水平距离为半径的圆形，所述第一竖轴(42)的顶部滑动设置于弧形滑槽(21)内，所述滚轮(41)转动设置于钢制凹槽(51)内，所述梁(2)和牛腿(5)之间固定设置有橡胶垫片(6)，所述橡胶垫片(6)设置在万向轮(4)的外围，所述梁(2)的中央沿梁(2)的长度方向开设有通道A(22)，所述支撑柱(1)的中央开设有通道B(11)，所述通道A(22)与通道B(11)相连通且两者内贯穿设置有一预应力钢筋(3)；所述梁(2)的侧边端部与支撑柱(1)的侧壁之间填充有掺有碳纤维的磷酸镁水泥砂浆(8)，所述梁(2)的顶部与支撑柱(1)之间通过角钢(7)固定连接；所述角钢(7)和预应力钢筋(3)均为形状记忆合金材质制作。
  2. 根据权利要求1所述的装配式自复位节点，其特征在于：所述角钢(7)具有第一端部平面(71)、中间平面(72)和第二端部平面(73)，所述第一 端部平面(71)的延长面与第二端部平面(73)的延长面相互垂直，所述中间平面(72)设置于第一、二端部平面之间。
  3. 根据权利要求2所述的装配式自复位节点，其特征在于：所述中间平面(72)与第一端部平面(71)呈夹角为30°～60°。
  4. 根据权利要求3所述的装配式自复位节点，其特征在于：所述第一端部平面(71)和第二端部平面(73)上均开设有用于套置螺栓的螺栓孔，所述支撑柱(1)的侧壁和梁(2)的顶部均开设有用于与螺栓连接的孔道，所述第一端部平面(71)与支撑柱(1)的侧壁之间、第二端部平面(73)与梁(2)的顶部之间均通过螺栓(9)贯穿螺栓孔和孔道实现固定连接。
  5. 根据权利要求1所述的装配式自复位节点，其特征在于：所述钢制凹槽(51)的底部中央为平面设置，所述滚轮(41)的底部滑动设置于钢制凹槽(51)内。
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