CN108867851A - Angle steel consuming type concrete-filled circular steel tube column-steel beam connecting joint with runback bit function - Google Patents
Angle steel consuming type concrete-filled circular steel tube column-steel beam connecting joint with runback bit function Download PDFInfo
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- CN108867851A CN108867851A CN201810620957.4A CN201810620957A CN108867851A CN 108867851 A CN108867851 A CN 108867851A CN 201810620957 A CN201810620957 A CN 201810620957A CN 108867851 A CN108867851 A CN 108867851A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 202
- 239000010959 steel Substances 0.000 title claims abstract description 202
- 239000004567 concrete Substances 0.000 title claims abstract description 56
- 239000003351 stiffener Substances 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 230000002787 reinforcement Effects 0.000 claims description 15
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 10
- 230000008901 benefit Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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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
- 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
- E04H9/025—Structures with concrete columns
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Abstract
本发明公开了一种具有自复位功能的角钢耗能式圆钢管混凝土柱‑钢梁连接节点，包括圆钢管混凝土柱、找平构件、第一耗能角钢、H型钢梁、第二耗能角钢及无粘结预应力钢绞线；找平构件扣合固定于圆钢管混凝土柱的侧面，第一耗能角钢的一侧与H型钢梁上翼缘的上表面相连接，第一耗能角钢的另一侧固定于找平构件上；第二耗能角钢的一侧固定于H型钢梁下翼缘的下表面上，第二耗能角钢的另一侧固定于找平构件上，H型钢梁的腹板上设置有横向加劲肋，无粘结预应力钢绞线依次穿过横向加劲肋、找平构件及圆钢管混凝土柱，通过无粘结预应力钢绞线将H型钢梁与圆钢管混凝土柱压紧。该节点具有良好的抗震性能和自复位能力。
The invention discloses an angle steel energy-dissipating circular concrete-filled steel tube column-steel beam connection node with self-resetting function, which includes a circular steel-filled concrete column, a leveling member, a first energy-dissipating angle steel, an H-shaped steel beam, and a second energy-dissipating angle steel and unbonded prestressed steel strands; the leveling member is buckled and fixed on the side of the circular steel tube concrete column, one side of the first energy-dissipating angle steel is connected with the upper surface of the upper flange of the H-shaped steel beam, and the other side of the first energy-dissipating angle steel One side is fixed on the leveling member; one side of the second energy-dissipating angle steel is fixed on the lower surface of the lower flange of the H-shaped steel beam, and the other side of the second energy-dissipating angle steel is fixed on the leveling member. There are transverse stiffeners on the web, and the unbonded prestressed steel strands pass through the transverse stiffeners, leveling members and circular steel tube concrete columns in sequence, and the H-shaped steel beams and the circular steel tube concrete columns are connected by unbonded prestressed steel strands. The column is compacted. The node has good seismic performance and self-resetting ability.
Description
技术领域technical field
本发明属于建筑结构技术领域，涉及一种具有自复位功能的角钢耗能式圆钢管混凝土柱-钢梁连接节点。The invention belongs to the technical field of building structures, and relates to an angle steel energy-consuming circular steel pipe concrete column-steel beam connection node with a self-resetting function.
背景技术Background technique
钢管混凝土结构是在钢管柱内填充素混凝土，且钢管和核心混凝土共同承受外荷载作用的竖向承重构件，一方面由于钢管约束了混凝土，提高了混凝土的强度和变形能力，另一方面有防治了钢管的屈曲，因此具有承载力高、延性好的优点。而且由于混凝土的成本较低，所以具有经济性好的优点。在现代建筑中，以钢管混凝土柱与钢梁形成的混合结构被越来越多的应用于高层办公楼和商业建筑中，并取得了良好的经济效益和社会效益。The concrete-filled steel tube structure is a vertical load-bearing member in which plain concrete is filled in the steel tube column, and the steel tube and core concrete bear the external load together. On the one hand, the steel tube constrains the concrete, which improves the strength and deformation capacity of the concrete. The buckling of the steel pipe is avoided, so it has the advantages of high bearing capacity and good ductility. And because the cost of concrete is low, it has the advantage of good economy. In modern buildings, the hybrid structure formed by steel pipe concrete columns and steel beams is more and more used in high-rise office buildings and commercial buildings, and has achieved good economic and social benefits.
毫无疑问，节点的构造对形成可靠的结构体系来说非常的重要，尤其是大震灾害袭击时，因此提高节点的抗震性能具有重要的意义。目前在实际工程中，钢管混凝土柱—钢梁连接节点主要包括铰接节点、半刚性节点、刚性连接节点三类，节点形式主要有柱贯通式节点、加强环式节点及端板螺栓连接的节点形式。这些传统的节点形式在地震中主要通过塑性变形而不使结构发生倒塌，在地震过后这些传统的节点即使不发生断裂，也会产生较大的残余变形。过大的残余变形会导致结构在震后无法恢复到正常使用状态，不能满足继续使用的要求。There is no doubt that the structure of nodes is very important to form a reliable structural system, especially when a large earthquake disaster strikes, so it is of great significance to improve the seismic performance of nodes. At present, in actual engineering, the joints of CFST columns and steel beams mainly include hinged joints, semi-rigid joints, and rigid joints. . These traditional joint forms mainly prevent the structure from collapsing through plastic deformation during earthquakes. Even if these traditional joints do not break after the earthquake, large residual deformation will occur. Excessive residual deformation will lead to the failure of the structure to return to the normal use state after the earthquake, and cannot meet the requirements of continuous use.
发明内容Contents of the invention
本发明的目的在于克服上述现有技术的缺点，提供了一种具有自复位功能的角钢耗能式圆钢管混凝土柱-钢梁连接节点，解决了圆钢管混凝土柱表面预应力钢绞线难于锚固的问题。The purpose of the present invention is to overcome the above-mentioned shortcoming of the prior art, provide a kind of energy-dissipating round concrete-filled steel tube column-steel beam connection node with self-resetting function, and solve the difficulty of anchoring the prestressed steel strands on the surface of the round concrete-filled steel tube column The problem.
为达到上述目的，本发明所述的具有自复位功能的角钢耗能式圆钢管混凝土柱-钢梁连接节点包括圆钢管混凝土柱、找平构件、第一耗能角钢、H型钢梁、第二耗能角钢及无粘结预应力钢绞线；In order to achieve the above-mentioned purpose, the angle steel energy-dissipating circular concrete-filled steel pipe column-steel beam connection node with self-resetting function of the present invention includes a circular steel-filled concrete column, a leveling member, a first energy-dissipating angle steel, an H-shaped steel beam, a second Energy dissipation angle steel and unbonded prestressed steel strand;
找平构件扣合固定于圆钢管混凝土柱的侧面，第一耗能角钢的一侧与H型钢梁上翼缘的上表面相连接，第一耗能角钢的另一侧固定于找平构件上；第二耗能角钢的一侧固定于H型钢梁下翼缘的下表面上，第二耗能角钢的另一侧固定于找平构件上，H型钢梁的腹板上设置有横向加劲肋，无粘结预应力钢绞线依次穿过横向加劲肋、找平构件及圆钢管混凝土柱，通过无粘结预应力钢绞线，并将H型钢梁与圆钢管混凝土柱压紧。The leveling member is buckled and fixed on the side of the circular steel pipe concrete column, one side of the first energy-dissipating angle steel is connected to the upper surface of the upper flange of the H-shaped steel beam, and the other side of the first energy-dissipating angle steel is fixed on the leveling member; the second One side of the energy-dissipating angle steel is fixed on the lower surface of the lower flange of the H-shaped steel beam, and the other side of the second energy-dissipating angle steel is fixed on the leveling member. The web of the H-shaped steel beam is provided with transverse stiffeners, without The bonded prestressed steel strand passes through the transverse stiffener, the leveling member and the circular steel tube concrete column in sequence, passes through the unbonded prestressed steel strand, and compresses the H-shaped steel beam and the circular steel tube concrete column.
找平构件上固定有垫板，其中，第一耗能角钢及第二耗能角钢固定于垫板上。A backing plate is fixed on the leveling member, wherein the first energy dissipation angle steel and the second energy dissipation angle steel are fixed on the backing plate.
H型钢梁上翼缘的上表面上设置有第一加强板，H型钢梁下翼缘的下表面上设置有第二加强板，其中，第一耗能角钢固定于所述第一加强板上，第二耗能角钢固定于第二加强板上。A first reinforcing plate is provided on the upper surface of the upper flange of the H-shaped steel beam, and a second reinforcing plate is provided on the lower surface of the lower flange of the H-shaped steel beam, wherein the first energy-dissipating angle steel is fixed on the first reinforcing plate , the second energy dissipation angle steel is fixed on the second reinforcing plate.
第一耗能角钢、圆钢管混凝土柱、找平构件及垫板之间以及第二耗能角钢、圆钢管混凝土柱、找平构件及垫板之间均通过高强螺栓相连接。The first energy-dissipating angle steel, the round concrete-filled steel tube column, the leveling member and the backing plate, and the second energy-dissipating angle steel, the circular steel-filled concrete column, the leveling member and the backing plate are all connected by high-strength bolts.
H型钢梁的上翼缘、第一加强板及第一耗能角钢之间以及H型钢梁的下翼缘、第二加强板及第二耗能角钢之间均通过高强螺栓相连接。The upper flange of the H-shaped steel beam, the first reinforcing plate and the first energy-dissipating angle steel, and the lower flange of the H-shaped steel beam, the second reinforcing plate and the second energy-dissipating angle steel are all connected by high-strength bolts.
第一加强板与H型钢梁的上翼缘之间相焊接，第二加强板与H型钢梁的下翼缘之间相焊接。The first reinforcing plate is welded to the upper flange of the H-shaped steel beam, and the second reinforced plate is welded to the lower flange of the H-shaped steel beam.
第一加强板及第二加强板均为梯形加强板。Both the first reinforcement board and the second reinforcement board are trapezoidal reinforcement boards.
找平构件的一侧面为与圆钢管混凝土柱表面相配合的凹面，找平构件的另一侧面为平面。One side of the leveling member is a concave surface matched with the surface of the circular steel pipe concrete column, and the other side of the leveling member is a plane.
本发明具有以下有益效果：The present invention has the following beneficial effects:
本发明所述的具有自复位功能的角钢耗能式圆钢管混凝土柱-钢梁连接节点采用无粘结预应力技术，通过无粘结预应力钢绞线将H型钢梁与圆钢管混凝土柱压紧，使得节点具备足够的抗弯刚度，以满足正常使用情况下的功能。在受到较大的地震作用时，H型钢梁与圆钢管混凝土柱之间脱开并形成一定的间隙，通过第一耗能角钢及第二耗能角钢弹塑性变形消耗地震能量，避免梁柱结构的破坏。地震过后通过无粘结预应力钢绞线提供恢复力，使得H型钢梁与圆钢管混凝土柱恢复到初始位置，残余变形较小，震后结构可以继续工作使用，抗震性能较为优良。该自复位节点形式解决了圆钢管混凝土柱表面预应力钢绞线难于锚固的问题。The angle steel energy-dissipating circular concrete-filled steel pipe column-steel beam connection node with self-resetting function of the present invention adopts the unbonded prestressing technology, and the H-shaped steel beam and the circular steel pipe concrete column are connected by unbonded prestressed steel strands. Compression so that the joint has sufficient bending stiffness to meet the function under normal use. When subjected to a large earthquake, the H-shaped steel beam and the circular steel pipe concrete column are disengaged and a certain gap is formed, and the seismic energy is consumed through the elastic-plastic deformation of the first energy-dissipating angle steel and the second energy-dissipating angle steel, avoiding the beam-column damage to the structure. After the earthquake, the restoring force is provided by the unbonded prestressed steel strand, so that the H-shaped steel beam and the circular steel pipe concrete column return to their original positions, the residual deformation is small, the structure can continue to work after the earthquake, and the seismic performance is relatively good. The self-resetting joint form solves the problem that the prestressed steel strands on the surface of the circular steel pipe concrete column are difficult to anchor.
附图说明Description of drawings
图1为本发明用于组成框架结构体系的示意图；Fig. 1 is the schematic diagram that the present invention is used for forming frame structure system;
图2为本发明的结构示意图；Fig. 2 is a structural representation of the present invention;
图3为图2的俯视图；Fig. 3 is the top view of Fig. 2;
图4为图2中1-1位置的剖视图；Fig. 4 is a sectional view of position 1-1 in Fig. 2;
图5为本发明在地震过程中的结构示意图；Fig. 5 is a schematic structural view of the present invention during an earthquake;
图6为本发明中找平构件3的结构示意图。Fig. 6 is a schematic structural view of the leveling member 3 in the present invention.
其中，1为圆钢管混凝土柱、2为H型钢梁、3为找平构件、4为垫板、5为第一耗能角钢、6为高强螺栓、7为无粘结预应力钢绞线、8为横向加劲肋、9为第一加强板、10为锚具。Among them, 1 is a circular steel tube concrete column, 2 is an H-shaped steel beam, 3 is a leveling member, 4 is a backing plate, 5 is the first energy-dissipating angle steel, 6 is a high-strength bolt, 7 is an unbonded prestressed steel strand, 8 is a transverse stiffener, 9 is a first reinforcing plate, and 10 is an anchor.
具体实施方式Detailed ways
下面结合附图对本发明做进一步详细描述：The present invention is described in further detail below in conjunction with accompanying drawing:
参考图1至图6，本发明所述的具有自复位功能的角钢耗能式圆钢管混凝土柱-钢梁连接节点包括圆钢管混凝土柱1、H型钢梁2、找平构件3、第一耗能角钢5、第二耗能角钢及无粘结预应力钢绞线7；找平构件3扣合固定于圆钢管混凝土柱1的侧面，第一耗能角钢5的一侧与H型钢梁2上翼缘的上表面相连接，第一耗能角钢5的另一侧固定于找平构件3上；第二耗能角钢的一侧固定于H型钢梁2下翼缘的下表面上，第二耗能角钢的另一侧固定于找平构件3上，H型钢梁2的腹板上设置有横向加劲肋8，无粘结预应力钢绞线7依次穿过横向加劲肋8、找平构件3及圆钢管混凝土柱1，通过无粘结预应力钢绞线7将H型钢梁2与圆钢管混凝土柱1压紧，其中，无粘结预应力钢绞线7的两端均设置有锚具10。Referring to Fig. 1 to Fig. 6, the angle steel energy-dissipating round concrete-filled steel pipe column-steel beam connection node with self-resetting function according to the present invention includes a round concrete-filled steel pipe column 1, an H-shaped steel beam 2, a leveling member 3, a first power consumption Energy angle steel 5, second energy dissipation angle steel and unbonded prestressed steel strand 7; The upper surface of the upper flange is connected, the other side of the first energy dissipation angle steel 5 is fixed on the leveling member 3; one side of the second energy dissipation angle steel is fixed on the lower surface of the lower flange of the H-shaped steel beam 2, and the second The other side of the second energy-dissipating angle steel is fixed on the leveling member 3, and the web plate of the H-shaped steel beam 2 is provided with a transverse stiffener 8, and the unbonded prestressed steel strand 7 passes through the transverse stiffener 8 and the leveling member in sequence 3 and the round concrete-filled steel pipe column 1, the H-shaped steel beam 2 and the round concrete-filled steel pipe column 1 are compressed by the unbonded prestressed steel strand 7, wherein both ends of the unbonded prestressed steel strand 7 are provided with Anchorage 10.
找平构件3上固定有垫板4，其中，第一耗能角钢5及第二耗能角钢固定于垫板4上；H型钢梁2上翼缘的上表面上设置有第一加强板9，H型钢梁2下翼缘的下表面上设置有第二加强板，其中，第一耗能角钢5固定于所述第一加强板9上，第二耗能角钢固定于第二加强板上；所述垫板4为8mm厚矩形钢板，垫板4焊接在找平构件3上。A backing plate 4 is fixed on the leveling member 3, wherein the first energy-dissipating angle steel 5 and the second energy-dissipating angle steel are fixed on the backing plate 4; the upper surface of the upper flange of the H-shaped steel beam 2 is provided with a first reinforcing plate 9 , the lower surface of the lower flange of the H-shaped steel beam 2 is provided with a second reinforcement plate, wherein the first energy dissipation angle steel 5 is fixed on the first reinforcement plate 9, and the second energy dissipation angle steel is fixed on the second reinforcement plate Above; the backing plate 4 is a rectangular steel plate with a thickness of 8 mm, and the backing plate 4 is welded on the leveling member 3 .
第一耗能角钢5、圆钢管混凝土柱1、找平构件3及垫板4之间以及第二耗能角钢、圆钢管混凝土柱1、找平构件3及垫板4之间均通过高强螺栓6相连接；H型钢梁2的上翼缘、第一加强板9及第一耗能角钢5之间以及H型钢梁2的下翼缘、第二加强板及第二耗能角钢之间均通过高强螺栓6相连接。Between the first energy-dissipating angle steel 5, the round concrete-filled steel tube column 1, the leveling member 3 and the backing plate 4, and between the second energy-dissipating angle steel, the round concrete-filled steel tube column 1, the leveling member 3 and the backing plate 4, 6 high-strength bolts are connected to each other. connection; between the upper flange of the H-shaped steel beam 2, the first reinforcing plate 9 and the first energy-dissipating angle steel 5, and between the lower flange of the H-shaped steel beam 2, the second reinforcing plate and the second energy-dissipating angle steel Connected by 6 high-strength bolts.
第一加强板9与H型钢梁2的上翼缘之间相焊接，第二加强板与H型钢梁2的下翼缘之间相焊接；第一加强板9及第二加强板均为梯形加强板。The first reinforcement plate 9 is welded with the upper flange of the H-shaped steel beam 2, and the second reinforcement plate is welded with the lower flange of the H-shaped steel beam 2; the first reinforcement plate 9 and the second reinforcement plate are both It is a trapezoidal reinforced plate.
找平构件3的一侧面为与圆钢管混凝土柱1表面相配合的凹面，找平构件3的另一侧面为平面。One side of the leveling member 3 is a concave surface matched with the surface of the circular steel pipe concrete column 1, and the other side of the leveling member 3 is a plane.
圆钢管混凝土柱1的横截面为圆形，钢管材料为普通强度等级钢材，采用热轧无缝钢管；混凝土可为普通混凝土或高性能混凝土；找平构件3焊接在圆钢管混凝土柱1上。The cross-section of the circular concrete-filled steel tube column 1 is circular, and the material of the steel tube is ordinary strength grade steel, using hot-rolled seamless steel tubes; the concrete can be ordinary concrete or high-performance concrete;
在地震作用下，H型钢梁2产生一定的转动，H型钢梁2与圆钢管混凝土柱1之间产生一定的间隙，通过第一耗能角钢5及第二耗能角钢的弹塑性变形消耗地震能量。地震作用后，在无粘结预应力钢绞线7的作用下，H型钢梁2与圆钢管混凝土柱1之间张开的间隙逐渐闭合，节点恢复到初始状态，不产生残余变形，结构可继续使用。Under the action of the earthquake, the H-shaped steel beam 2 rotates to a certain extent, and a certain gap is formed between the H-shaped steel beam 2 and the circular steel pipe concrete column 1, through the elastic-plastic deformation of the first energy-dissipating angle steel 5 and the second energy-dissipating angle steel Consumes seismic energy. After the earthquake, under the action of the unbonded prestressed steel strand 7, the gap opened between the H-shaped steel beam 2 and the circular CFST column 1 gradually closed, and the joints returned to their original state without residual deformation. Can continue to use.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810620957.4A CN108867851A (en) | 2018-06-15 | 2018-06-15 | Angle steel consuming type concrete-filled circular steel tube column-steel beam connecting joint with runback bit function |
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| CN110318568A (en) * | 2019-05-21 | 2019-10-11 | 宁波工程学院 | A kind of Self-resetting assembling truss structure |
| CN114319592A (en) * | 2022-02-22 | 2022-04-12 | 安徽工业大学 | Self-resetting steel pipe steel slag concrete column-steel beam joint connecting device |
| CN116575784A (en) * | 2023-05-08 | 2023-08-11 | 重庆大学 | A self-resetting energy-dissipating node for wind power hybrid tower structure |
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| CN116575784A (en) * | 2023-05-08 | 2023-08-11 | 重庆大学 | A self-resetting energy-dissipating node for wind power hybrid tower structure |
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