阅读说明：本技术 一种抗震抗连续倒塌的钢结构波形钢管节点构件 (Shock-resistant and continuous collapse-resistant steel structure corrugated steel pipe joint member ) 是由 王茹 孙菲 臧玉澄 路焕军 邹亚兰 于 2021-04-29 设计创作，主要内容包括：本发明公开了一种抗震抗连续倒塌的钢结构波形钢管节点构件,包括波形钢管、钢柱及钢梁；所述波形钢管包括第一平板、第二平板、SMA形状记忆合金板及波形板,SMA形状记忆合金板的一端及波形板的一端均固定于第一平板上,SMA形状记忆合金板的另一端及波形板的另一端均固定于第二平板上,第一平板固定于钢柱上,第二平板固定于钢梁上,该构件能够有效解决传统钢结构节点抗震抗连续倒塌能力不足导致结构发生破坏的问题。(The invention discloses an earthquake-resistant and continuous collapse-resistant steel structure corrugated steel pipe node member, which comprises a corrugated steel pipe, a steel column and a steel beam, wherein the corrugated steel pipe is connected with the steel column; the corrugated steel pipe comprises a first flat plate, a second flat plate, an SMA shape memory alloy plate and a corrugated plate, one end of the SMA shape memory alloy plate and one end of the corrugated plate are fixed on the first flat plate, the other end of the SMA shape memory alloy plate and the other end of the corrugated plate are fixed on the second flat plate, the first flat plate is fixed on a steel column, and the second flat plate is fixed on a steel beam.)

1. A steel structure corrugated steel pipe node member with earthquake resistance and continuous collapse resistance is characterized by comprising a corrugated steel pipe (4), a steel column (5) and a steel beam (6);

the corrugated steel pipe (4) comprises a first flat plate (21), a second flat plate (22), an SMA shape memory alloy plate (3) and a corrugated plate (1), one end of the SMA shape memory alloy plate (3) and one end of the corrugated plate (1) are fixed on the first flat plate (21), the other end of the SMA shape memory alloy plate (3) and the other end of the corrugated plate (1) are fixed on the second flat plate (22), the first flat plate (21) is fixed on the steel column (5), and the second flat plate (22) is fixed on the steel beam (6).

2. An earthquake-resistant continuous collapse-resistant steel structure corrugated steel pipe joint component according to claim 1, wherein the first flat plate (21) and the steel column (5) are connected through friction type high-strength bolts (7).

3. An earthquake-resistant and continuous collapse-resistant corrugated steel pipe joint component according to claim 1, wherein the second flat plate (22) and the steel beam (6) are connected through high-strength bolts (8).

4. An earthquake-resistant progressive collapse-resistant steel structure corrugated steel pipe joint member according to claim 1, characterized in that the number of corrugated plates (1) is two.

5. An earthquake-resistant progressive collapse-resistant steel structure corrugated steel pipe joint member according to claim 1, characterized in that the SMA shape memory alloy plate (3) is located between two corrugated plates (1).

6. An earthquake-resistant progressive collapse-resistant steel structure corrugated steel pipe node member according to claim 1, characterized in that the horizontal axis of the corrugated steel pipe (4) is collinear with the neutral axis of the steel beam (6).

7. An earthquake-resistant progressive collapse-resistant steel structure corrugated steel pipe node member according to claim 1, wherein the SMA shape memory alloy plates (3) are connected at intermediate positions of the first flat plate (21) and at intermediate positions of the second flat plate (22).

8. An earthquake-resistant and continuous collapse-resistant corrugated steel pipe joint member as claimed in claim 2, wherein the first flat plate (21) is provided with oblong bolt holes for the friction-type high-strength bolts (7) to pass through.

Technical Field

The invention belongs to the field of steel structures, and relates to a shock-resistant and continuous collapse-resistant corrugated steel pipe joint member of a steel structure.

Background

The steel structure engineering is widely applied to the construction industry due to the advantages of light weight, high strength, good plastic toughness, high manufacturing and installation mechanization degree and the like. As building structures have been used for longer periods in recent years, the probability of being subjected to accidental loading (such as earthquakes, fires, explosions, impacts, etc.) has correspondingly increased, the probability of structural member damage or failure has also increased significantly, and if the nodes fail prematurely, the structure will not be able to exert the catenary effect primarily to resist failure by successive collapse. Therefore, the node has enough strength and deformability, which is an important guarantee that the beam-column connection node is not subjected to continuous collapse and damage. Meanwhile, the earthquake-resistant design specification of the building structure requires that the node has enough ductility to meet the requirement of deformation of the structure under the action of earthquake, so that brittle failure does not occur. Whether in an anti-seismic design or a continuous collapse resistant design, the node is a vital component, and therefore, a node component which can resist both the earthquake and the continuous collapse is urgently needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an anti-seismic and anti-continuous-collapse steel structure corrugated steel pipe node member which can effectively solve the problem that the structure is damaged due to insufficient anti-seismic and anti-continuous-collapse capability of the traditional steel structure node.

In order to achieve the aim, the shock-resistant and continuous collapse-resistant steel structure corrugated steel pipe node component comprises a corrugated steel pipe, a steel column and a steel beam;

the corrugated steel pipe comprises a first flat plate, a second flat plate, an SMA shape memory alloy plate and a corrugated plate, one end of the SMA shape memory alloy plate and one end of the corrugated plate are fixed on the first flat plate, the other end of the SMA shape memory alloy plate and the other end of the corrugated plate are fixed on the second flat plate, the first flat plate is fixed on the steel column, and the second flat plate is fixed on the steel beam.

The first flat plate is connected with the steel column through friction type high-strength bolts.

The second flat plate is connected with the steel beam through a high-strength bolt.

The number of the corrugated plates is two, wherein the SMA shape memory alloy plate is positioned between the two corrugated plates.

The horizontal axis of the corrugated steel pipe is on the same straight line with the neutral axis of the steel beam.

The SMA shape memory alloy plate is attached to the first plate at a middle position and to the second plate at a middle position.

The first flat plate is provided with an oblong bolt hole for the friction type high-strength bolt to penetrate through.

The invention has the following beneficial effects:

when the steel structure corrugated steel pipe node member for resisting earthquake and continuous collapse is in specific operation, the corrugated steel pipe is arranged between the end part of the steel beam and the steel column, the corrugated steel pipe does not deform greatly under the normal use load effect, and the corrugated plate stretches or compresses along with the rotation of the steel beam under the earthquake effect, so that the ductility of the node is increased, and the earthquake resistance of the structure is improved; at the initial stage of continuous collapse of the structure, due to a beam mechanism generated in the structure, the failure column node bears negative bending moment, the upper side of a node area is pressed and the lower side is pulled, at the moment, the corrugated plate is stretched or compressed along the horizontal central axis of the corrugated plate, namely, the pressed area is compressed, and the pulled area is stretched, so that the rotation capacity of the node at the initial stage of continuous collapse is improved; when the structure is collapsed to a large deformation period continuously, the catenary effect is generated in the structure, the node area is in a completely pulled state, and the corrugated plate is completely stretched but not damaged under the condition that the ultimate bearing capacity of the structure is not influenced, so that the catenary effect is fully exerted. In addition, when the structure suffered vertical impact load, the instantaneous impact energy of structure is poured into in order to reduce for the friction of vertical obround bolt hole that the friction type high-strength bolt slided to reduce the structure and take place the probability of collapsing in succession and destroy, then effectively solve the problem that traditional steel construction node ductility is not enough when antidetonation and the premature failure of joint connection region when anti collapsing in succession.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is a front view of the corrugated steel pipe 4 connected to a beam column;

fig. 6 is a sectional view taken along line a-a in fig. 5.

Wherein, 1 is a corrugated plate, 21 is a first flat plate, 22 is a second flat plate, 3 is an SMA shape memory alloy plate, 4 is a corrugated steel pipe, 5 is a steel column, 6 is a steel beam, 7 is a friction type high-strength bolt, and 8 is a high-strength bolt.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1 to 6, the earthquake-resistant and continuous collapse-resistant steel structure corrugated steel pipe joint member of the present invention includes a corrugated steel pipe 4, a steel column 5 and a steel beam 6; the corrugated steel pipe 4 comprises a first flat plate 21, a second flat plate 22, an SMA shape memory alloy plate 3 and a corrugated plate 1, one end of the SMA shape memory alloy plate 3 and one end of the corrugated plate 1 are fixed on the first flat plate 21, the other end of the SMA shape memory alloy plate 3 and the other end of the corrugated plate 1 are fixed on the second flat plate 22, the first flat plate 21 is fixed on the steel column 5, and the second flat plate 22 is fixed on the steel beam 6.

The first flat plate 21 is connected with the steel column 5 through a friction type high-strength bolt 7; the second flat plate 22 is connected with the steel beam 6 through a high-strength bolt 8, and the first flat plate 21 is provided with an oblong bolt hole for the friction type high-strength bolt 7 to penetrate through.

The number of the corrugated plates 1 is two, wherein the SMA shape memory alloy plate 3 is positioned between the two corrugated plates 1; the horizontal axis of the corrugated steel pipe 4 and the neutral axis of the steel beam 6 are on the same straight line; the SMA shape memory alloy plate 3 is attached to the first flat plate 21 at an intermediate position and to the second flat plate 22 at an intermediate position.

The first flat plate 21, the second flat plate 22, the corrugated plate 1, the steel column 5 and the steel beam 6 are all made of Q245 steel, Q345 steel, Q390 steel or Q420 steel, and the friction type high-strength bolts 7 and the high-strength bolts 8 are all 8.8 or 10.9-level high-strength bolts so as to ensure the strength of the node.

The construction process of the invention is as follows:

the corrugated steel pipe 4 is manufactured by using a die, bolt holes are formed in the first flat plate 21 and the second flat plate 22, the corrugated steel pipe 4 is fixed on the steel column 5 by using the friction type high-strength bolts 7 during construction, and then the steel beam 6 is connected with the corrugated steel pipe 4 through the high-strength bolts 8.

It should be noted that, according to the seismic design requirements and the continuous collapse resistance requirements of the building structure, the bending radian of the corrugated plate 1 and the length of the corrugated line should be reasonably arranged, so that the corrugated steel pipe 4 can be stretched or compressed during an earthquake, and can be completely stretched but not subjected to plastic damage before the catenary effect is fully exerted during the continuous collapse resistance, thereby ensuring that the steel node fully exerts the catenary effect, and ensuring that the steel node has the seismic resistance and continuous collapse resistance at the same time, so that the structural damage is reduced.