CN116044000A - Prefabricated self-resetting concrete frame joints with high energy consumption and high robustness - Google Patents
Prefabricated self-resetting concrete frame joints with high energy consumption and high robustness Download PDFInfo
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- 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
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- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
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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
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- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
- E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations
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- 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
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- 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
- E04H9/025—Structures with concrete columns
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- E—FIXED CONSTRUCTIONS
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- 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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B2001/5875—Connections for building structures in general of bar-shaped building elements using exterior clamping plates or shells
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Abstract
Description
技术领域technical field
本发明涉及土木工程装配式结构领域,具体为兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点。The invention relates to the field of civil engineering assembled structures, in particular to an assembled self-resetting concrete frame node with high energy consumption and high robustness.
背景技术Background technique
近年来,为了避免传统延性抗震的设计理念所带来的结构构件受力屈服及震后建筑物残余变形较大等问题,自复位框架结构被提出并得到了广泛的发展。自复位框架通常采用无粘结预应力筋将预制梁柱构件挤压在一起,在节点转动过程中,梁柱构件相互分离,避免了结构构件屈服,并通过附加阻尼装置耗能;外力移除后,预应力筋再次将梁柱构件压紧,从而实现自复位。因此,自复位框架同时具有控制损伤和自复位能力,是实现震后可恢复功能的一种有效途径。In recent years, self-resetting frame structures have been proposed and widely developed in order to avoid problems such as structural component yielding and large residual deformation of buildings after earthquakes caused by traditional ductile seismic design concepts. Self-resetting frames usually use unbonded prestressed tendons to squeeze the prefabricated beam-column members together. During the joint rotation process, the beam-column members are separated from each other, avoiding the yielding of the structural members and dissipating energy through additional damping devices; the external force is removed Afterwards, the prestressed tendon compresses the beam-column member again, thereby realizing self-resetting. Therefore, the self-resetting frame has both damage control and self-resetting capabilities, which is an effective way to realize the recoverable function after an earthquake.
目前的自复位框架普遍存在两个问题:一方面,当前的自复位结构大多采用整层通长张拉预应力筋的方式,将无粘结预应力筋贯穿所有梁跨,并锚固于边柱的外侧。采用这种连接形式的结构,一旦某一跨在地震中发生破坏,将会影响整层的预应力水平,导致该层所有节点强度的下降,从而降低整层的抗震性能甚至引起垮塌,使得自复位结构的鲁棒性较低。此外,通长预应力筋的高空张拉也给施工作业增加难度。另一方面,当前的附加阻尼装置大多固定在梁柱接触区,通过节点的张开使得阻尼器变形,从而产生滞回耗能。采用这种耗能方式,使得阻尼器在较大的节点转角下才能发挥作用,当结构变形较小时耗能效率较低,为此我们提出了兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点。There are generally two problems in the current self-resetting frame: on the one hand, most of the current self-resetting structures adopt the method of tensioning prestressed tendons throughout the whole layer, and unbonded prestressed tendons run through all beam spans and are anchored to side columns outside. With this type of connection structure, once a certain span is damaged in an earthquake, it will affect the prestress level of the entire floor, resulting in a decrease in the strength of all nodes in the floor, thereby reducing the seismic performance of the entire floor and even causing collapse, making the entire floor The reset structure is less robust. In addition, the high-altitude tensioning of the long prestressed tendons also increases the difficulty of construction work. On the other hand, most of the current additional damping devices are fixed in the beam-column contact area, and the expansion of the nodes causes the damper to deform, resulting in hysteretic energy consumption. With this energy consumption method, the damper can only play a role at a larger node angle, and the energy consumption efficiency is low when the structural deformation is small. Therefore, we propose an assembly type with high energy consumption and high robustness. Self-resetting concrete frame joints.
发明内容Contents of the invention
(一)解决的技术问题(1) Solved technical problems
针对现有技术的不足,本发明提供了兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点,解决了上述的问题。Aiming at the deficiencies of the prior art, the present invention provides an assembled self-resetting concrete frame node with high energy consumption and high robustness, which solves the above-mentioned problems.
(二)技术方案(2) Technical solutions
为实现上述所述目的,本发明提供如下技术方案:兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点,包括预制混凝土柱、预制混凝土梁、钢梁锚固装置、高效耗能装置、耗能装置支座、梁端角钢、耗能装置连接板、固定钢板、高强螺栓以及无粘结预应力筋,预制混凝土柱预留高强螺栓孔道,预制混凝土柱通过高强螺栓连接固定钢板,预制混凝土梁预留无粘结预应力筋孔道,预制混凝土梁的端部锚入角钢,梁端角钢外侧焊接有耗能装置连接板,耗能装置连接板通过锚筋锚入预制混凝土梁中,钢梁锚固装置远柱端与预制混凝土梁通过预应力筋锚固连接,钢梁锚固装置近柱端与预制混凝土柱通过高强螺栓紧固连接,钢梁锚固装置及耗能装置连接板的上表面和下表面分别设置有耗能装置支座,钢梁锚固装置和耗能装置连接板上的装置支座之间连接有高效耗能装置。In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: an assembled self-resetting concrete frame node with high energy consumption and high robustness, including precast concrete columns, precast concrete beams, steel beam anchoring devices, high energy consumption device, energy dissipation device support, beam end angle steel, energy dissipation device connection plate, fixed steel plate, high-strength bolts and unbonded prestressed tendons, high-strength bolt holes are reserved for precast concrete columns, and precast concrete columns are connected by high-strength bolts to fix steel plates. The unbonded prestressed tendon channel is reserved in the precast concrete beam, the end of the precast concrete beam is anchored into the angle steel, and the connection plate of the energy dissipation device is welded on the outside of the angle steel at the end of the beam, and the connection plate of the energy dissipation device is anchored into the precast concrete beam through the anchor bar. The far column end of the steel beam anchorage device is connected to the precast concrete beam by prestressed tendons, and the near column end of the steel beam anchorage device is connected to the precast concrete column by high-strength bolts. The upper surface of the steel beam anchorage device and the energy dissipation device connecting plate and Energy-dissipating device supports are respectively arranged on the lower surface, and high-efficiency energy-dissipating devices are connected between the steel beam anchoring device and the device supports on the connecting plate of the energy-dissipating device.
优选的,所述钢梁锚固装置包括H型钢梁、连接端板、锚固端板、两个加劲肋和两个加强板,H型钢梁上下表面分别焊接一个加强板,加强板的尺寸大小与H型钢梁翼缘板大小一致,加强板的表面焊接耗能装置支座,H型钢梁的远柱端焊接锚固端板,锚固端板上开设与预制混凝土梁对应的预应力筋孔道,预应力筋穿过预制混凝土梁中的孔道及锚固端板上的预留孔,锚固在锚固端板上,H型钢梁近柱端焊接连接端板,连接端板上开设与预制混凝土柱上的高强螺栓孔道对应的预留孔,固定钢板的尺寸与连接端板尺寸一致,固定钢板上开设有与连接端板上螺栓孔道位置对应的螺栓孔道,高强螺栓依次穿过连接端板、预制混凝土柱和固定钢板,两个加劲肋对称布置在H型钢梁腹板两侧,采用三边围焊的方式分别连接端板、H型钢梁和锚固端板,且其位置避开连接端板及锚固端板上的预应力筋孔洞。Preferably, the steel beam anchoring device includes an H-shaped steel beam, a connecting end plate, an anchoring end plate, two stiffeners and two reinforcing plates, and a reinforcing plate is respectively welded on the upper and lower surfaces of the H-shaped steel beam, and the size of the reinforcing plate is The size of the flange plate of the H-shaped steel beam is the same, the surface of the reinforcement plate is welded with the support of the energy dissipation device, and the far-column end of the H-shaped steel beam is welded with the anchor end plate, and the anchor end plate is provided with a prestressed tendon channel corresponding to the prefabricated concrete beam. The stress tendons pass through the channel in the precast concrete beam and the reserved hole on the anchoring end plate, and are anchored on the anchoring end plate. The end plate of the H-shaped steel beam near the column is welded and connected to the end plate, and the high-strength bolts on the connecting end plate are set on the precast concrete column. The reserved hole corresponding to the hole, the size of the fixed steel plate is consistent with the size of the connecting end plate, and the bolt hole corresponding to the position of the bolt hole on the connecting end plate is opened on the fixed steel plate, and the high-strength bolts pass through the connecting end plate, the precast concrete column and the fixed Steel plate, two stiffeners are symmetrically arranged on both sides of the H-shaped steel beam web, and the end plate, H-shaped steel beam and anchor end plate are respectively connected by three-sided welding, and their positions avoid the connecting end plate and anchor end Tendon holes in the slab.
优选的,所述高效耗能装置包括放大位移组件、耗能元件和连接套管,放大位移组件即由四个连杆和四个销轴构成的菱形扁桁架,四个连杆和四个销轴依次连接,布置成“菱形”状,菱形扁桁架两侧长轴方向上的两个销轴由内向外依次穿过连接套管以及两侧的连杆,耗能元件设置在菱形扁桁架两侧短轴方向上连杆铰接处之间。Preferably, the high-efficiency energy-dissipating device includes an amplified displacement assembly, an energy-dissipating element and a connecting sleeve, the amplified displacement assembly is a diamond-shaped flat truss composed of four connecting rods and four pins, four connecting rods and four pins The shafts are connected in turn and arranged in a "rhombic" shape. The two pins in the direction of the long axis on both sides of the rhombus flat truss pass through the connecting sleeve and the connecting rods on both sides sequentially from the inside to the outside. Between the joints of the connecting rods in the direction of the short axis of the side.
优选的,所述耗能元件包括耗能板A、耗能板B和摩擦螺栓,菱形扁桁架两侧短轴方向上的销轴分别由内向外依次连接与其对应的耗能板A、与耗能板A对应的连杆以及耗能板B和与耗能板B对应的连杆,耗能板A的工作区为双板,双板的内侧固定三毫米的铜板,耗能板B的工作区为单板,耗能板A开设六个螺栓孔,耗能板B开设两排与六个螺栓孔对应的摩擦螺栓孔道,摩擦螺栓依次穿过耗能板A上位板、耗能板B以及耗能板A下位板。Preferably, the energy-dissipating elements include energy-dissipating plates A, energy-dissipating plates B and friction bolts, and the pins on both sides of the rhombus-shaped flat truss in the direction of the short axis are connected to the corresponding energy-dissipating plates A and The connecting rod corresponding to energy plate A, energy dissipation plate B and the connecting rod corresponding to energy dissipation plate B, the working area of energy dissipation plate A is a double plate, and a 3mm copper plate is fixed on the inner side of the double plate, and the work of energy dissipation plate B The area is a single plate. The energy dissipation plate A has six bolt holes, and the energy dissipation plate B has two rows of friction bolt holes corresponding to the six bolt holes. The friction bolts pass through the upper plate of energy dissipation plate A, energy dissipation plate B and Energy consumption board A lower board.
优选的,所述耗能装置支座包括U型传力支座及传力轴,U型传力支座焊接在钢梁锚固装置及耗能装置连接板的表面,传力轴穿过U型传力支座及连接套管。Preferably, the energy dissipation device support includes a U-shaped force transmission support and a force transmission shaft, the U-shaped force transmission support is welded on the surface of the steel beam anchorage device and the connecting plate of the energy dissipation device, and the force transmission shaft passes through the U-shaped Force transmission support and connecting sleeve.
优选的,所述耗能板A采用黄铜片、铝片、软钢耗能材料或者粘弹性耗能材料作为摩擦耗能材料。Preferably, the energy dissipation plate A uses brass sheet, aluminum sheet, mild steel energy dissipation material or viscoelastic energy dissipation material as the frictional energy dissipation material.
优选的,所述钢梁锚固装置的截面高度同预制混凝土梁高与两块耗能装置连接板的厚度之和相等。Preferably, the section height of the steel beam anchoring device is equal to the sum of the height of the precast concrete beam and the thickness of the connecting plates of the two energy dissipation devices.
(三)有益效果(3) Beneficial effects
与现有技术相比,本发明提供了兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点,具备以下有益效果:Compared with the prior art, the present invention provides an assembled self-resetting concrete frame node with high efficiency, energy consumption and high robustness, which has the following beneficial effects:
1、该兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点,节点在地震等灾害引起相对转动时,预制混凝土梁与钢梁锚固装置分离,所形成的张开角可以避免梁内纵筋的受拉屈服;此外,钢梁锚固装置通过高强螺栓与预制混凝土柱固定,对预制混凝土柱及节点核心区形成约束和保护,避免了节点核心区的破坏。上述措施可有效消除梁柱节点的结构性破坏,确保了结构构件基本保持弹性状态;同时通过预应力筋提供节点的自复位能力,有效减小节点的残余变形,确保了灾后节点的功能可恢复。1. The assembled self-resetting concrete frame joint with high energy consumption and high robustness, when the joint is caused by disasters such as earthquakes to cause relative rotation, the prefabricated concrete beam and the steel beam anchorage device are separated, and the opening angle formed can avoid Tensile yielding of the longitudinal reinforcement; in addition, the steel beam anchorage device is fixed to the precast concrete column by high-strength bolts, constraining and protecting the precast concrete column and the core area of the joint, and avoiding damage to the core area of the joint. The above measures can effectively eliminate the structural damage of the beam-column joints and ensure that the structural members basically maintain an elastic state; at the same time, the self-resetting ability of the joints is provided by the prestressed tendons, which effectively reduces the residual deformation of the joints and ensures that the functions of the joints can be restored after the disaster. .
2、该兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点,利用位移放大原理可以有效提高阻尼器的耗能效率,在较小的层间位移下也可充分变形,为节点提供可观的耗能能力。2. The assembled self-resetting concrete frame joint with high energy consumption and high robustness can effectively improve the energy consumption efficiency of the damper by using the principle of displacement amplification, and can fully deform under small interstory displacements. Nodes provide considerable power consumption capabilities.
3、该兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点,采用钢梁锚固装置为预制混凝土梁中的预应力筋提供锚固区域,再通过高强螺栓将张拉并锚固好的预应力梁组固定到预制柱上,从而实现了预应力筋的逐跨张拉锚固,避免了同一楼层不同梁跨间预应力的相互影响,有效提高了结构的鲁棒性。3. The prefabricated self-resetting concrete frame joint with high energy consumption and high robustness adopts steel beam anchoring device to provide anchoring area for prestressed tendon in precast concrete beam, and then tensions and anchors well through high-strength bolts The prestressed beam group is fixed to the prefabricated column, thereby realizing the span-by-span tensile anchorage of the prestressed tendon, avoiding the mutual influence of prestressing force between different beam spans on the same floor, and effectively improving the robustness of the structure.
4、该兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点,所采用的张拉方式,可在地面进行预应力筋的张拉锚固,完成预制混凝土梁与钢梁锚固装置的组装,然后将组装好的预应力梁组吊装到对应安装位置,采用高强螺栓完成与预制混凝土柱的干连接,从而避免了高空张拉预应力筋,极大的提升了施工效率,施工环境安全,操作过程便捷。4. The prefabricated self-resetting concrete frame joints with high energy consumption and high robustness can be tensioned and anchored on the ground by tensioning the prestressed tendons to complete the anchoring device of precast concrete beams and steel beams. Then the assembled prestressed beam group is hoisted to the corresponding installation position, and high-strength bolts are used to complete the dry connection with the precast concrete column, thereby avoiding the high-altitude tensioning of the prestressed tendons, which greatly improves the construction efficiency and the construction environment Safe and convenient to operate.
5、该兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点,高效耗能装置的耗能元件磨损老化后,可通过拆卸放大位移组件上的销轴进行更换,从而实现节点损伤的集中及损伤部件的快捷更换。5. The assembled self-resetting concrete frame node with high energy consumption and high robustness, after the energy-consuming components of the high-efficiency energy-dissipating device are worn out and aged, can be replaced by disassembling the pin shaft on the amplified displacement component, so as to realize the node Concentration of damage and quick replacement of damaged parts.
附图说明Description of drawings
图1是本发明框架节点的三维示意图;Fig. 1 is a three-dimensional schematic diagram of a frame node of the present invention;
图2为本发明框架节点的主视图;Fig. 2 is the front view of framework node of the present invention;
图3是本发明框架节点的俯视图;Fig. 3 is the top view of frame node of the present invention;
图4是本发明图3的A-A剖面图;Fig. 4 is the A-A sectional view of Fig. 3 of the present invention;
图5是本发明钢梁锚固装置的主视图;Fig. 5 is the front view of steel beam anchorage device of the present invention;
图6是本发明图5的B-B剖面图;Fig. 6 is the B-B sectional view of Fig. 5 of the present invention;
图7是本发明高效耗能装置的三维示意图;Fig. 7 is a three-dimensional schematic diagram of the high-efficiency energy-consuming device of the present invention;
图8是本发明高效耗能装置的俯视示意图;Fig. 8 is a schematic top view of the high-efficiency energy-consuming device of the present invention;
图9为本发明高效耗能装置的拆分示意图;Fig. 9 is a disassembled schematic view of the high-efficiency energy-consuming device of the present invention;
图10是本发明图8的C-C剖面图;Fig. 10 is the C-C sectional view of Fig. 8 of the present invention;
图11是本发明图8的D-D剖面图;Fig. 11 is the D-D sectional view of Fig. 8 of the present invention;
图12是本发明耗能装置支座与连接套管的整体示意图;Fig. 12 is an overall schematic diagram of the support of the energy dissipation device and the connecting sleeve of the present invention;
图13是本发明高效耗能装置的原理示意图。Fig. 13 is a schematic diagram of the principle of the high-efficiency energy consumption device of the present invention.
图中:1、预制混凝土柱;2、预制混凝土梁;3、钢梁锚固装置;31、H型钢梁;32、连接端板;33、锚固端板;34、加劲肋;35、加强板;4、高效耗能装置;41、放大位移组件;411、连杆;412、销轴;42、耗能元件;421、耗能板A;422、耗能板B;423、摩擦螺栓;43、连接套管;5、耗能装置支座;51、U型传力支座;52、传力轴;6、梁端角钢;7、耗能装置连接板;8、固定钢板;9、高强螺栓;10、预应力筋。In the figure: 1. Precast concrete column; 2. Precast concrete beam; 3. Steel beam anchoring device; 31. H-shaped steel beam; 32. Connecting end plate; 33. Anchoring end plate; 34. Stiffener; 35. Strengthening plate ;4. High efficiency energy dissipation device; 41. Amplified displacement assembly; 411. Connecting rod; 412. Pin shaft; 42. Energy dissipation element; 421. Energy dissipation plate A; 422. Energy dissipation plate B; 423. Friction bolt; 43 , Connecting sleeve; 5. Energy dissipation device support; 51. U-shaped force transmission support; 52. Force transmission shaft; 6. Beam end angle steel; 7. Energy dissipation device connecting plate; 8. Fixed steel plate; Bolts; 10, prestressed tendons.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
请参阅图1-4,兼具高效耗能及高鲁棒性的装配式自复位混凝土框架节点,包括预制混凝土柱1、预制混凝土梁2、钢梁锚固装置3、高效耗能装置4、耗能装置支座5、梁端角钢6、耗能装置连接板7、固定钢板8、高强螺栓9以及无粘结预应力筋10,预制混凝土柱1预留高强螺栓孔道,预制混凝土柱1通过高强螺栓9连接固定钢板8;预制混凝土梁2预留无粘结预应力筋孔道,两个梁端角钢6对称设置在预制混凝土梁2梁端的上下顶点,同时在预制混凝土梁2上下表面预埋耗能装置连接板7,耗能装置连接板7左端与预制混凝土梁2左端面对齐,耗能装置连接板7与梁端角钢6接触部分通过焊接连接,耗能装置连接板7与预制混凝土梁2接触部分通过预埋铆钉连接;钢梁锚固装置3远柱端与预制混凝土梁2通过预应力筋10锚固连接,钢梁锚固装置3近柱端与预制混凝土柱1通过高强螺栓9紧固连接,钢梁锚固装置3及耗能装置连接板7的上表面和下表面分别设置有耗能装置支座5,钢梁锚固装置3和耗能装置连接板7上的装置支座5之间连接有高效耗能装置4。Please refer to Figure 1-4, the assembled self-resetting concrete frame nodes with high energy consumption and high robustness, including precast
请参阅图4-6,钢梁锚固装置3包括H型钢梁31、连接端板32、锚固端板33、两个加劲肋34和两个加强板35,H型钢梁31上下表面分别焊接一个加强板35,加强板35的尺寸大小与H型钢梁31翼缘板大小一致,加强板35的表面焊接耗能装置支座5,H型钢梁31的远柱端焊接锚固端板33,锚固端板33上开设与预制混凝土梁2对应的预应力筋孔道,预应力筋10穿过预制混凝土梁2中的孔道及锚固端板33上的预留孔,锚固在锚固端板33上,H型钢梁31近柱端焊接连接端板32,连接端板32上开设与预制混凝土柱1上的高强螺栓孔道对应的预留孔,固定钢板8的尺寸与连接端板32尺寸一致,固定钢板8上开设有与连接端板32上螺栓孔道位置对应的螺栓孔道,高强螺栓9依次穿过连接端板32、预制混凝土柱1和固定钢板8,两个加劲肋34对称布置在H型钢梁31腹板两侧,采用三边围焊的方式分别连接端板32、H型钢梁31和锚固端板33,且其位置避开连接端板32上的螺栓孔洞和锚固端板33上的预应力筋孔洞。Please refer to Fig. 4-6, the steel beam anchoring device 3 includes H-shaped steel beam 31, connecting end plate 32, anchoring end plate 33, two stiffeners 34 and two reinforcing plates 35, and the upper and lower surfaces of H-shaped steel beam 31 are welded respectively A reinforcement plate 35, the size of the reinforcement plate 35 is consistent with the size of the flange plate of the H-shaped steel beam 31, the surface of the reinforcement plate 35 is welded with the energy dissipation device support 5, and the far-column end of the H-shaped steel beam 31 is welded with the anchor end plate 33 , the anchoring end plate 33 is provided with a prestressed tendon channel corresponding to the precast concrete beam 2, and the prestressed tendon 10 passes through the channel in the precast concrete beam 2 and the reserved hole on the anchoring end plate 33, and is anchored on the anchoring end plate 33 , the H-shaped steel beam 31 is welded to the connection end plate 32 near the column end, the connection end plate 32 is provided with a reserved hole corresponding to the high-strength bolt channel on the precast concrete column 1, and the size of the fixed steel plate 8 is consistent with the connection end plate 32 size, The fixed steel plate 8 is provided with a bolt hole corresponding to the position of the bolt hole on the connecting end plate 32, and the high-strength bolts 9 pass through the connecting end plate 32, the precast concrete column 1 and the fixed steel plate 8 in turn, and two stiffeners 34 are symmetrically arranged in the H-shaped On both sides of the web plate of the steel beam 31, the end plate 32, the H-shaped steel beam 31 and the anchor end plate 33 are respectively connected by three-sided welding, and the positions avoid the bolt holes on the connecting end plate 32 and the anchor end plate 33 Prestressed tendon holes on the top.
请参阅图7-12,高效耗能装置4包括放大位移组件41、耗能元件42和连接套管43,放大位移组件41即由四个连杆411和四个销轴412构成的菱形扁桁架,四个连杆411和四个销轴412依次连接,布置成“菱形”状,菱形扁桁架两侧长轴方向上的两个销轴412由内向外依次穿过连接套管43以及两侧的连杆411,耗能元件42设置在菱形扁桁架两侧短轴方向上连杆411铰接处之间。Please refer to Figures 7-12, the high-efficiency
耗能元件42包括耗能板A421、耗能板B422和摩擦螺栓423,菱形扁桁架两侧短轴方向上的销轴412分别由内向外依次连接与其对应的耗能板A421、与耗能板A421对应的连杆411以及耗能板B422和与耗能板B422对应的连杆411,耗能板A421的工作区为双板,双板的内侧固定三毫米的铜板,耗能板B422的工作区为单板,耗能板A421开设六个螺栓孔,耗能板B422开设两排与六个螺栓孔对应的摩擦螺栓孔道,摩擦螺栓423依次穿过耗能板A421上位板、耗能板B422以及耗能板A421下位板,拧紧摩擦螺栓423使铜板与耗能板之间产生挤压力。The
耗能装置支座5包括U型传力支座51及传力轴52,U型传力支座51焊接在钢梁锚固装置3及耗能装置连接板7的表面,传力轴52穿过U型传力支座51及连接套管43,将连接套管43固定在U型传力支座51上,并保证其可绕传力轴52转动。The energy
耗能装置支座5具有一定的高度,高效耗能装置4与预制混凝土梁2及钢梁锚固装置3表面留有一定距离,保证节点发生转动时,高效耗能装置4与梁不发生接触;The energy-dissipating
所述钢梁锚固装置3的截面高度同预制混凝土梁2高与两块耗能装置连接板7的厚度之和相等;The section height of the steel
所述无粘结预应力筋10可根据实际工程需要沿梁高布置1-4组,钢梁锚固装置3中的加劲肋34根据无粘结预应力筋10的布置情况交错布置,其间距应保证无粘结预应力筋张拉锚固所需空间;The unbonded
耗能板A421上采用黄铜片作为摩擦耗能材料,并且可替换为铝片摩擦材料,软钢耗能材料、粘弹性耗能材料等。Brass sheet is used as the frictional energy-dissipating material on the energy-dissipating plate A421, and it can be replaced with aluminum sheet friction material, mild steel energy-dissipating material, viscoelastic energy-dissipating material, etc.
请参阅图13,高效耗能装置的工作原理如下:在梁柱节点转动时,预制混凝土梁2与钢梁锚固装置3分离,形成张开角,设置于预制混凝土梁2表面的耗能装置支座5与设置在钢梁锚固装置3表面的耗能装置5支座发生相对位移运动,使得高效耗能装置中的放大位移组件沿其长轴方向发生变形,通过菱形扁桁架的变形协调,将耗能装置支座5之间的相对位移传递到耗能板A421与耗能板B422所在的短轴上的相对变形,从而引起耗能板A421与耗能板B422之间的相对摩擦。如图13所示,当放大位移组件411长轴上的杆与梁轴线方向夹角为θ时,其短轴方向的变形(即耗能板A421与耗能板B422之间的相对位移)为长轴方向变形(即耗能装置支座5之间的相对位移)的当θ小于45°时即可实现位移放大效果。Please refer to Figure 13, the working principle of the high-efficiency energy-dissipating device is as follows: when the beam-column joint rotates, the precast
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.
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