CN110670900A - Steel structure reinforcing joint member with multiple anti-seismic continuous collapse prevention lines - Google Patents
Steel structure reinforcing joint member with multiple anti-seismic continuous collapse prevention lines Download PDFInfo
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- CN110670900A CN110670900A CN201911039107.6A CN201911039107A CN110670900A CN 110670900 A CN110670900 A CN 110670900A CN 201911039107 A CN201911039107 A CN 201911039107A CN 110670900 A CN110670900 A CN 110670900A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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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
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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
- E04H9/024—Structures with steel columns and beams
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Abstract
The invention discloses a steel structure reinforced node member with a plurality of anti-seismic continuous collapse-resistant defense lines, which comprises a steel beam, a steel column, a steel groove and a truss chord member, wherein the steel beam is arranged on the steel column; the end of the steel beam is fixed on the steel column, the steel groove is fixed on the lower surface of the lower flange of the steel beam, the side surface of the steel column is provided with a hinged support, a friction sliding block is arranged in the steel groove, a through hole is formed in the bottom surface of the steel groove, one end of the truss chord is penetrated through the through hole and connected with the friction sliding block, the other end of the truss chord is connected with the hinged support, and the component can effectively solve the problem that the structure is fragile and damaged due to the fact that the traditional steel structure node is insufficient in anti-seismic and anti.
Description
Technical Field
The invention belongs to the field of steel structures, and relates to a steel structure reinforced joint member with multiple anti-seismic and anti-continuous collapse defense lines.
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 the probability of a building structure undergoing an accidental loading event (e.g. earthquake, fire, explosion, impact, etc.) increases in use, the probability of damage or failure of a structural member also increases significantly, thereby potentially resulting in localized structural failure or even disproportionate progressive collapse failure. After a certain component of the structure is invalid, internal force redistribution is carried out in the structure, so that the node has enough strength to ensure that the important area of the beam-column connecting node is not damaged, the guarantee that the internal force redistribution is carried out on the structure is ensured, the premise that the structure can enter a catenary stage is provided, and the key that the structure does not collapse continuously is realized. Progressive collapse is a strong nonlinear dynamic failure, and the structural collapse is usually short in time and mostly brittle. 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. Therefore, a reinforcement method for reducing brittle failure of a structure is needed in newly built buildings and already built buildings, and the continuous collapse resistance of the structure is improved on the basis of not reducing or even improving the shock resistance of the structure.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a steel structure reinforced node member with a plurality of anti-seismic and anti-continuous collapse prevention lines, which can effectively solve the problem that the structure is fragile and damaged due to insufficient anti-seismic and anti-continuous collapse capability of the traditional steel structure node. In order to achieve the aim, the steel structure reinforced node member with the multiple anti-seismic continuous collapse-resistant defense lines comprises a steel beam, a steel column, a steel groove and a truss chord member;
the end of the steel beam is fixed on the steel column, the steel groove is fixed on the lower surface of the lower flange of the steel beam, the side surface of the steel column is provided with a hinged support, a friction sliding block is arranged in the steel groove, the bottom surface of the steel groove is provided with a through hole, one end of the truss chord passes through the through hole to be connected with the friction sliding block, and the other end of the truss chord is connected with the hinged support.
The web plate of the steel beam is connected with the side surface of the steel column through bolts and web plate angle steel.
And the side surface of the steel column is fixedly provided with a connecting plate, and the hinged support is fixed on the connecting plate.
The number of the hinged supports, the number of the chord members and the number of the friction sliding blocks are equal, wherein one chord member corresponds to one hinged support and one friction sliding block.
The included angle between the truss chord and the side surface of the steel column is 30-60 degrees.
The steel groove is internally divided into a plurality of cavities by partition plates, the number of the through holes on the bottom surface of the steel groove is the same as that of the cavities, one cavity corresponds to one through hole, one friction sliding block and one truss chord member, each through hole is arranged at the bottom of the corresponding cavity, and each friction sliding block is positioned in the corresponding cavity.
The steel column is H-shaped steel, wherein a column stiffening plate is arranged between the upper flange and the lower flange of the steel column.
The axis of the steel groove and the web plate of the steel beam are in the same plane;
the central axis of the hinged support and the web plate of the steel column are in the same plane.
The truss chord members are connected with the hinged support through pin bolts;
the connecting plate is connected with the steel column through high-strength bolts.
The number of the column stiffening plates is four, wherein two column stiffening plates respectively face the upper flange and the lower flange of the steel beam, and the other two column stiffening plates face the connecting plate.
The invention has the following beneficial effects:
when the steel structure reinforced node member with the multiple anti-seismic continuous collapse-resistant lines is in specific operation, the truss chord members are arranged between the bottoms of the steel beams and the steel columns, the reinforced node member does not participate in work under the action of normal use load, the truss chord members can freely rotate when the angles of the steel beams and the steel columns are changed, the friction sliding blocks arranged in the steel grooves also rotate or slide, the rotational rigidity and the bearing capacity of the nodes in the use stage are not obviously affected, the truss chord members rotate around the hinged supports along with the rotation of the steel beams and the steel column nodes, the friction sliding blocks and the inner side surfaces of the steel grooves perform friction sliding, and the friction force is changed along with the rotation angles of the nodes; under the action of an earthquake, the beam-column joint rotates to drive the friction sliding block to slide in the steel groove friction cavity, and the friction force between the friction sliding block and the inner wall of the steel groove can increase the structural damping and improve the shock resistance of the structure; in the collapse process of the structure, the upper node of the steel column bears positive bending moment (or negative bending moment), the truss chord member is in a pulled (or pressed) state under the constraint of the steel groove and rotates to one side close to (or far away from) the steel column, and the top surface of the steel groove, the partition plate, the friction sliding block, the truss chord member and the connecting plate can share certain bending moment, so that the bending resistance bearing capacity of the node and the seismic resistance and continuous collapse resistance of the structure are improved; under the accidental load effect, all components at beam column node all are in the stress state, and the buckling destruction takes place earlier than the node for the truss chord member, releases the energy of partly external load input in the structure to solve traditional steel construction node antidetonation and anti successive collapse ability not enough and lead to the structure to take place the brittle failure's problem.
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 sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic view of the chord 7;
FIG. 5 is a schematic view of a steel bath 6;
FIG. 6 is a schematic view of the connection of the friction slider 10 to the chord 7;
fig. 7 is a schematic view of the hinge support 8 connected to the connecting plate 9;
fig. 8 is a top view of the hinge support 8 connected to the connecting plate 9;
fig. 9 is a left side view of the hinge support 8 connected to the connecting plate 9;
FIG. 10 is an enlarged detail view of the steel channel 6;
fig. 11 is an enlarged detail view of the hinge support 8;
fig. 12 is a schematic view of the position of the bolt 4;
fig. 13 is an enlarged detail view of the hinge support 8 of fig. 12.
Wherein, 1 is the steel column, 2 is the girder steel, 3 is the column stiffening plate, 4 is the bolt, 5 is the web angle steel, 6 is the steel bath, 7 is the truss chord, 8 is the hinged-support, 9 is the connecting plate, 10 is the friction slider.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, 2, 3, 4, 6, 7, 8, 9 and 10, the steel structure reinforced node member with multiple earthquake-resistant and continuous collapse-resistant lines according to the present invention includes a steel beam 2, a steel column 1, a steel channel 6 and a truss chord 7; the end of the steel beam 2 is fixed on the steel column 1, the steel groove 6 is fixed on the lower surface of the lower flange of the steel beam 2, the hinged support 8 is arranged on the side surface of the steel column 1, the friction sliding block 10 is arranged in the steel groove 6, the bottom surface of the steel groove 6 is provided with a through hole, one end of the truss chord 7 penetrates through the through hole to be connected with the friction sliding block 10, and the other end of the truss chord 7 is connected with the hinged support 8.
Referring to fig. 5, 11, 12 and 13, specifically, the web of the steel beam 2 is connected to the side of the steel column 1 through the bolts 4 and the web angle steel 5; a connecting plate 9 is fixed on the side surface of the steel column 1, and a hinged support 8 is fixed on the connecting plate 9; the truss chord member 7 is connected with the hinged support 8 through a pin bolt; the connecting plate 9 is connected with the steel column 1 through high-strength bolts.
Referring to fig. 5, the number of the hinge supports 8, the number of the chord members 7 and the number of the friction sliders 10 are equal, wherein one chord member 7 corresponds to one hinge support 8 and one friction slider 10; the interior of the steel tank 6 is divided into a plurality of cavities by partition plates, the number of the through holes on the bottom surface of the steel tank 6 is the same as that of the cavities, one cavity corresponds to one through hole, one friction sliding block 10 and one truss chord member 7, each through hole is arranged at the bottom of the corresponding cavity, and each friction sliding block 10 is positioned in the corresponding cavity.
The steel column 1 is H-shaped steel, wherein column stiffening plates 3 are arranged between the upper flange and the lower flange of the steel column 1, the number of the column stiffening plates 3 is four, two column stiffening plates 3 respectively face the upper flange and the lower flange of the steel beam 2, and the other two column stiffening plates 3 face the connecting plate 9.
The included angle theta between the chord member 7 and the flange of the steel column 1 is 30-60 degrees, so that the steel column has good rotation capability, and the chord member 7 is prevented from being bent in the normal use stage.
The central line of steel channel 6 is in the coplanar with the web of girder steel 2, avoids the bottom flange of girder steel 2 to receive the additional force effect from steel channel 6 in the node rotation process.
The central axis of the hinged support 8 and the web plate of the steel column 1 are in the same plane, two column stiffening plates 3 are welded between the flanges of the steel column 1, and the two column stiffening plates 3 are respectively flush with the upper end and the lower end of the connecting plate 9, so that the reinforcing node member is prevented from seriously damaging the flanges of the steel column 1 in the stress process, and the steel column 1 is prevented from buckling.
The connecting plate 9 is provided with bolt holes, the number of the bolt holes is at least 2 for each row at least on the left side and the right side of the hinged support 8, and the number and the arrangement of the bolt holes formed in the steel column 1 correspond to those of the bolt holes in the connecting plate 9.
The steel column 1, the steel beam 2, the column stiffening plate 3, the web plate angle steel 5, the steel groove 6, the truss chord 7, the hinged support 8, the connecting plate 9 and the friction sliding block 10 are all made of Q235 steel, Q345 steel, Q390 steel or Q420 steel, and the bolt 4 is a high-strength bolt with the height of 8.8 or 10.9, so that the strength of the node is ensured.
The construction process of the invention is as follows:
in a factory, firstly, adjusting the length of the chord member 7 to a required length, welding the friction sliding block 10 at the upper end of the chord member 7, then manufacturing the steel slot 6, firstly, taking a steel plate with a required size, forming a through hole on the steel plate, then, penetrating the chord member 7 through the through hole on the bottom surface of the steel slot 6, disposing the friction sliding block 10 on the steel plate, and finally, welding the remaining five surfaces and the partition plates of the steel slot 6, thereby placing the friction sliding block 10 in the steel slot 6; the manufactured hinged support 8 is welded on the connecting plate 9, and finally the bottom end of the truss chord member 7 is connected on the hinged support 8 through a pin bolt.
The reinforcing node member is manufactured in a factory, and for a newly-built building, the connecting plate 9 is connected with the steel column 1 through the bolts 4, and bolt holes need to be reserved on the connecting plate 9 and the flange of the steel column 1.
The field construction operation steps are as follows: the steel column 1 and the steel beam 2 are fixed through bolts 4 and web plate angle steel 5, the steel groove 6 is connected with the flange of the steel beam 2 through a welding mode, and then the connecting plate 9 is connected with the flange of the steel column 1 through a welding mode or a bolt connection mode.
It should be noted that the arrangement angle theta of the truss chords 7 is designed according to the form of the steel beam 2, the steel column 1 and the connecting node, so that three truss chords 7 which are far away from the steel column 1 are subjected to buckling failure before the node is broken, energy is dissipated step by step, the steel structure node has multiple anti-seismic continuous collapse-resistant lines, and therefore brittle failure of the structure is relieved.
Claims (10)
1. A steel structure reinforced node member with a plurality of anti-seismic continuous collapse-resistant defense lines is characterized by comprising a steel beam (2), a steel column (1), a steel groove (6) and a truss chord member (7);
the end of the steel beam (2) is fixed on the steel column (1), the steel groove (6) is fixed on the lower surface of the lower flange of the steel beam (2), a hinged support (8) is arranged on the side surface of the steel column (1), a friction sliding block (10) is arranged in the steel groove (6), a through hole is formed in the bottom surface of the steel groove (6), one end of the truss chord (7) penetrates through the through hole and is connected with the friction sliding block (10), and the other end of the truss chord (7) is connected with the hinged support (8).
2. The structural steel reinforced joint member with multiple anti-seismic and anti-progressive collapse lines according to claim 1, wherein the web of the steel beam (2) is connected with the side of the steel column (1) through bolts (4) and web angle steel (5).
3. The steel structural reinforced joint member with multiple earthquake-resistant and progressive collapse-resistant defense lines according to claim 1, wherein the steel columns (1) are fixed at the sides with connecting plates (9), and the hinged support (8) is fixed on the connecting plates (9).
4. The steel structural reinforcement node member with multiple earthquake-resistant and continuous collapse-resistant defense lines according to claim 1, wherein the number of hinged supports (8), the number of chord members (7) and the number of friction sliders (10) are equal, wherein one chord member (7) corresponds to one hinged support (8) and one friction slider (10).
5. The steel structural reinforcement node member with multiple earthquake-resistant and continuous collapse-resistant defense lines according to claim 1, wherein the included angle between the truss chords (7) and the side surfaces of the steel columns (1) is 30-60 degrees.
6. The steel structure reinforced node component with multiple anti-seismic and anti-progressive collapse lines according to claim 1, wherein the interior of the steel groove (6) is divided into a plurality of cavities by partition plates, the number of through holes on the bottom surface of the steel groove (6) is the same as that of the cavities, one cavity corresponds to one through hole, one friction sliding block (10) and one truss chord (7), each through hole is arranged at the bottom of the corresponding cavity, and each friction sliding block (10) is positioned in the corresponding cavity.
7. The steel structural reinforcement node member with multiple earthquake-resistant and progressive collapse-resistant defense lines according to claim 1, wherein the steel columns (1) are H-shaped steel, and column stiffening plates (3) are arranged between upper flanges and lower flanges of the steel columns (1).
8. The steel structural reinforced node member with multiple earthquake-resistant and progressive collapse-resistant lines according to claim 1, wherein the axis of the steel channel (6) is in the same plane with the web of the steel beam (2);
the central axis of the hinged support (8) and the web plate of the steel column (1) are in the same plane.
9. The steel structure reinforced node member with multiple earthquake-resistant and continuous collapse-resistant defense lines according to claim 3, wherein the truss chords (7) are connected with the hinged supports (8) through pin bolts;
the connecting plate (9) is connected with the steel column (1) through high-strength bolts.
10. The steel structure reinforced node component with multiple earthquake-resistant and progressive collapse-resistant lines according to claim 7, wherein the number of the column stiffening plates (3) is four, wherein two column stiffening plates (3) respectively face the upper flange and the lower flange of the steel beam (2), and the other two column stiffening plates (3) face the connecting plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039107.6A CN110670900A (en) | 2019-10-29 | 2019-10-29 | Steel structure reinforcing joint member with multiple anti-seismic continuous collapse prevention lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039107.6A CN110670900A (en) | 2019-10-29 | 2019-10-29 | Steel structure reinforcing joint member with multiple anti-seismic continuous collapse prevention lines |
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| Publication Number | Publication Date |
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| CN110670900A true CN110670900A (en) | 2020-01-10 |
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| CN201911039107.6A Pending CN110670900A (en) | 2019-10-29 | 2019-10-29 | Steel structure reinforcing joint member with multiple anti-seismic continuous collapse prevention lines |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749489A (en) * | 2020-07-08 | 2020-10-09 | 梁春梅 | Steel structure house and installation method thereof |
| CN112267578A (en) * | 2020-11-23 | 2021-01-26 | 哈尔滨学院 | Steel structure anti-seismic device for assembly type building |
| CN112726957A (en) * | 2020-12-22 | 2021-04-30 | 魏如雪 | Exempt from reinforcing components of square steel column of formula of punching |
| CN113338441A (en) * | 2021-07-15 | 2021-09-03 | 西安建筑科技大学 | Structure for improving anti-collapse capability of beam column node |
| CN114045937A (en) * | 2021-11-26 | 2022-02-15 | 天津大学 | Replaceable shock insulation support suitable for column top shock insulation |
-
2019
- 2019-10-29 CN CN201911039107.6A patent/CN110670900A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749489A (en) * | 2020-07-08 | 2020-10-09 | 梁春梅 | Steel structure house and installation method thereof |
| CN112267578A (en) * | 2020-11-23 | 2021-01-26 | 哈尔滨学院 | Steel structure anti-seismic device for assembly type building |
| CN112267578B (en) * | 2020-11-23 | 2022-01-04 | 上海复旦规划建筑设计研究院有限公司 | Steel structure anti-seismic device for assembly type building |
| CN112726957A (en) * | 2020-12-22 | 2021-04-30 | 魏如雪 | Exempt from reinforcing components of square steel column of formula of punching |
| CN113338441A (en) * | 2021-07-15 | 2021-09-03 | 西安建筑科技大学 | Structure for improving anti-collapse capability of beam column node |
| CN114045937A (en) * | 2021-11-26 | 2022-02-15 | 天津大学 | Replaceable shock insulation support suitable for column top shock insulation |
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