CN112376720A - Combined steel pipe support with replaceable energy consumption sections - Google Patents
Combined steel pipe support with replaceable energy consumption sections Download PDFInfo
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- CN112376720A CN112376720A CN202011338773.2A CN202011338773A CN112376720A CN 112376720 A CN112376720 A CN 112376720A CN 202011338773 A CN202011338773 A CN 202011338773A CN 112376720 A CN112376720 A CN 112376720A
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- steel pipe
- steel
- plate
- plates
- stiffening rib
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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
- 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
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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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses a combined steel pipe support with a replaceable energy dissipation section, which comprises a gusset plate, an end plate, an elastic support section, a buckling energy dissipation section and a stiffening rib plate, wherein the elastic support section comprises an outer steel pipe and concrete filled with fine aggregate. An inner steel pipe is arranged in an inner cavity at one end of the outer steel pipe, and a flange plate is welded at one end of the inner steel pipe to be connected with a flange. The outer steel pipe and the inner steel pipe are welded together through a stiffening rib plate; the buckling energy consumption section comprises a buckling energy consumption steel pipe which is made of mild steel or Q235 steel with good ductility. The other end of each outer steel pipe is connected with an end plate, and the gusset plates are connected with the end plates through welding seams; the support adopts low-yield-point steel with better plasticity as a buckling energy consumption section, so that the support has stable performance, simple processing and low manufacturing cost; the elastic support section and the buckling energy consumption section are connected through the flange, and the buckling energy consumption steel pipe can be replaced at any time after being deformed under the accidental load action of earthquakes and the like, so that the repairing cost can be reduced, the time can be saved, and the efficiency can be improved.
Description
Technical Field
The invention relates to the technical field of earthquake resistance and disaster prevention of building structures, in particular to a combined steel pipe support with replaceable energy consumption sections.
Background
The traditional support is easy to buckle under the accidental load action of earthquakes and the like, the support or the connection is easy to damage or lose efficacy, the hysteretic performance of the support after yielding is poor, and the anti-seismic performance of the structure is reduced. In recent years, buckling restrained brace is used more in countries such as japan, usa and taiwan in China. The buckling-restrained energy-dissipation brace is a brace which does not buckle under a pressed state, and has more stable mechanical property and better hysteretic energy dissipation capability compared with the traditional brace. At present, the buckling-restrained energy-dissipation brace products in China are mainly foreign products, the manufacturing cost is high, and the engineering application is difficult to popularize.
Disclosure of Invention
The invention aims to provide a combined steel pipe support with replaceable energy consumption sections, which aims to solve the problems in the prior art, adopts low-yield-point steel with better plasticity as a buckling energy consumption section, and has the advantages of stable performance, simple processing and low manufacturing cost; can be replaced at any time after being deformed under the accidental load action of earthquakes and the like, can reduce the repair cost, saves the time and improves the efficiency.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a combined steel pipe support with replaceable energy dissipation sections, which comprises a gusset plate, an end plate, an elastic support section, a buckling energy dissipation section, a flange connection and a stiffening rib plate, wherein the elastic support section comprises an outer steel pipe and concrete filled with fine aggregate; the buckling energy dissipation section comprises buckling energy dissipation steel pipes, the flange plates are welded at two ends of each buckling energy dissipation steel pipe, and the flange plates welded at the end parts of the inner steel pipes are connected through high-strength bolts; the other ends of the two outer steel pipes are connected with the end plates, and the node plates are connected with the end plates through welding seams; the buckling energy-consuming steel pipe is made of mild steel or Q235 steel.
Preferably, the outer steel pipe and the inner steel pipe are welded together through 6 stiffening rib plates, the 6 stiffening rib plates are uniformly distributed in the circumferential direction, and the central angle between every two adjacent stiffening rib plates is 60 degrees; the stiffening rib plates are welded on the inner side of the outer steel pipe and the outer side of the inner steel pipe.
Preferably, the diameter of the inner steel pipe is the same as that of the buckling energy dissipation steel pipe, and one end of the inner steel pipe extends out of the outer steel pipe and is welded with the flange.
Preferably, the flange plate is a round steel plate with an outer diameter larger than that of the buckling energy-dissipation steel pipe, and bolt holes are reserved in the flange plate.
Preferably, the gusset plate is the cross gusset plate, and the cross gusset plate is formed by 4 rectangle steel sheets perpendicular welding of each other, and it has 6 bolt holes to open on every rectangle steel sheet, the steel of gusset plate and end plate is unanimous.
Preferably, the diameter of the end plate is larger than that of the outer steel pipe; the outer steel pipe is made of high-strength steel with the yield strength of 420MPa or 460 MPa.
Preferably, the other side of the end plate is fixed with the outer steel pipe of the elastic support section through a cross stiffening rib; the cross stiffening rib is formed by welding 4 ribbed plates with the same size mutually and vertically and is welded on the inner side of the outer steel pipe.
Preferably, the gap part in the outer steel pipe is filled with fine aggregate concrete, and a gap is left between the fine aggregate concrete and the inner steel pipe to prevent the concrete from being pressed.
Compared with the prior art, the invention has the following beneficial technical effects:
1. the energy-consuming steel pipes in the support can be replaced at any time, so that the recovery capability of the components after the earthquake is greatly improved, the high maintenance cost is reduced, and the maintenance efficiency can be improved;
2. the energy dissipation is greatly increased by using soft steel or Q235 steel with good plasticity as an energy consumption section;
3. the concrete in the elastic supporting section is filled, so that the bending rigidity of the member can be effectively increased.
4. The structure is simple, the cost is lower, the structure is economical and practical, and the structure can be produced in batch.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a front view of a combined steel pipe support with replaceable energy consumption sections;
FIG. 2 is a sectional view of the combined steel tube supporting elastic supporting section with replaceable energy consumption sections;
FIG. 3 is a schematic view of flange connection between an inner steel pipe and an energy-consuming steel pipe;
in the figure: 1-gusset plate; 2-outer steel tube; 3-buckling energy-consuming steel pipes; 4, flange connection; 4-1-flange plate; 4-2-high strength bolts; 5-stiffening rib plates; 6-end plate; 7-inner steel tube; 8-cross stiffening ribs; 9-fine aggregate concrete.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a combined steel pipe support with replaceable energy consumption sections, which aims to solve the problems in the prior art, adopts low-yield-point steel with better plasticity as a buckling energy consumption section, and has the advantages of stable performance, simple processing and low manufacturing cost; can be replaced at any time after being deformed under the accidental load action of earthquakes and the like, can reduce the repair cost, saves the time and improves the efficiency.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-3, the present embodiment provides a combined steel pipe support with replaceable energy dissipation sections, which mainly comprises gusset plate connections, elastic support sections at two ends, a middle buckling energy dissipation section, flange connections 4, and stiffening rib plates 5. The gusset plate is connected by cross gusset plate 1 with bolt hole and end plate 6 of elastic support section steel pipe tip through the welding seam, and 6 opposite sides of end plate are formed by cross stiffening rib 8 and steel pipe welding, can prevent effectively that the end plate part from receiving the bending. The elastic support section at both ends comprises outer steel pipe 2 and interior steel pipe 7, and interior steel pipe 7 mainly plays the effect of connecting the elastic support section and consuming energy and supporting the section, and is in the same place through the welding of 6 stiffening rib boards 5 between two steel pipes, and 6 stiffening rib boards 5 are located the concentric circles, and the central angle between the adjacent stiffening rib board 5 is 60, and the welding of stiffening rib board 5 is in the inboard of outer steel pipe 2, the outside of interior steel pipe 7. The outer steel pipe 2 is made of high-strength steel, such as Q460 steel, and is basically in an elastic stage under the action of load, and buckling cannot occur. The inner space part of the elastic support section round steel pipe is filled with fine aggregate concrete 9 so as to improve the bending rigidity of the member. The energy-dissipating buckling steel pipe 3 is a steel pipe with a small diameter and a thick wall, is made of mild steel or Q235 steel with low strength, has good plasticity, can bear large deformation, can show good hysteretic energy-dissipating capacity under the action of earthquake load, and is not easy to buckle. And flanges 4-1 are welded at two ends of the buckling energy dissipation steel pipe 3 to form flange connections 4, and the flange connections 4 are connected with steel pipes 7 in the elastic support section through high-strength bolts 4-2. The purpose of using the flange connection 4 is to enable the buckling energy-dissipation steel pipe 3 to be replaced at any time after being deformed under the accidental load action of earthquakes and the like, so that the structure repairing cost can be reduced, the time can be saved, and the efficiency is improved. The flange plate 4-1 is a round steel plate with an outer diameter larger than that of the buckling energy-dissipation steel pipe 3, and high-strength bolt holes are reserved on the round steel plate.
The mounting dimensions of the components of the invention and other considerations are as follows:
1. the steel pipe in the energy dissipation support section is made of mild steel or Q235 steel, the steel pipe in the elastic support section is made of high-strength steel such as Q460, deformation or buckling damage of the energy dissipation steel pipe under the load action is guaranteed, and the steel pipe in the elastic support section is basically in the elastic stage and cannot be buckled and damaged. After the earthquake and other load actions, the deformed steel pipe of the energy dissipation support section can be replaced in time. The length-diameter ratio of the steel pipe at the energy consumption supporting section is preferably controlled within 6, and the diameter-thickness ratio is preferably controlled within 10.
2. The cross-shaped node plate 1 is connected with the end plate 6 through a welding seam, and the connection between the end plate 6 and the outer steel pipe 2 of the elastic supporting section is reinforced by the cross-shaped stiffening rib 8 on the other side of the end plate 6, so that the local bending of the end plate can be effectively prevented. The cross-shaped gusset plate 1 is formed by vertically welding 4 rectangular steel plates, and each rectangular steel plate is provided with 6 bolt holes. The steel materials of the gusset plate 1 and the end plate 6 are kept consistent, the width of a welding seam is calculated, and the diameter of the circular end plate 6 is slightly larger than that of the outer steel pipe 2.
3. The fine aggregate concrete 9 is filled in the gap part in the steel pipe 7 in the elastic support section, so that the bending rigidity of the elastic support section member can be effectively increased, a gap is reserved between the concrete and the inner steel pipe 7, and the concrete is prevented from being pressed.
4. The welding seam is easy to crack due to tension, so the heat influence of the flange plate 4-1 and the steel pipe during welding is not negligible, and the steel pipe outside the range of 20-40mm affected by the heat at the flange joint is cut, so that the wall thickness of the steel pipe is properly reduced by 2-4 mm.
5. The flange connection 4 consists of a flange plate 4-1 and a high-strength bolt 4-2, and meets the requirements of strength and rigidity of a connection part. The buckling energy-consuming steel pipe 3 is connected with the flange plate 4-1 through a welding seam.
6. The inner steel pipe and the outer steel pipe of the elastic supporting section are welded together through 6 stiffening rib plates 5, and the length of the stiffening rib plates 5 is determined according to the requirement of bearing capacity on welding seams. (the number of the reinforcing ribs 5 should be determined by the strength calculation, and may be increased as appropriate, for example, 8 or 12, but the reinforcing ribs 5 should be uniformly distributed along the circumference and located in concentric circles).
7. The length of the steel pipe 7 in the elastic support section is not required to be longer, and is 10-20cm longer than the length of the stiffening rib plate 5, so that the purpose of connecting the elastic support section and the energy dissipation buckling section is mainly achieved, a small circular end plate is welded at one end of the inner steel pipe 7, a flange plate is welded at the other end of the circular end plate, and a high-strength bolt hole is reserved in the flange plate.
The construction method comprises the following steps:
the first step is as follows: one side of the end plate 6 is connected with a cross-shaped gusset plate 1 with a bolt hole through welding, and the other side of the end plate is fixed with an outer steel pipe of the elastic supporting section through a cross-shaped stiffening rib 8.
The second step is that: the inner steel pipe and the outer steel pipe of the elastic supporting section are welded together through 6 stiffening rib plates 5, and the length of the stiffening rib plates 6 is determined according to the requirement of bearing capacity on welding seams.
The third step: and filling concrete in the gaps of the elastic support sections to improve the bending rigidity of the member. A gap is reserved between the concrete and the inner steel pipe 7, so that the concrete is prevented from being pressed.
The fourth step: the replaceable buckling energy dissipation steel pipe 3 consists of the buckling energy dissipation steel pipe 3 with a smaller diameter and flange connections 4 at two ends, and the flange plate 4-1 is connected with the buckling energy dissipation steel pipe 3 through a welding line. Bolt holes are reserved on the flange plate 4-1, so that the buckling energy-consumption steel pipe 3 and the elastic supporting section are connected into a whole through high-strength bolts 4-2.
The fifth step: and connecting the elastic supporting section and the energy consumption supporting section by using a high-strength bolt 4-2.
Specifically, in the present embodiment, the gusset plate 1 is formed by welding 4 steel plates with bolt holes perpendicularly to each other. The outer steel pipe 2 of the elastic support section can be made of high-strength steel with the yield strength of 420Mpa or 460Mp, and the steel pipe is ensured to be basically in an elastic stage under the action of accidental load and cannot reach the yield strength. The buckling energy-consumption steel pipe 3 is a steel pipe with a smaller diameter and a thicker wall thickness, the steel material is mild steel or Q235 steel with lower strength, the two ends of the steel pipe are made into flange joints 4, the welding seam is easy to crack due to tension, so the heat influence of the flange plate 4-1 and the steel pipe during welding is not negligible, and the steel pipe outside the range of 20-40mm affected by the heat of the flange joints is cut, so the wall thickness of the steel pipe is properly reduced by 2-4 mm. The flange connection 4 is composed of a flange plate 4-1 and high-strength bolts 4-2 and is mainly used for connecting the buckling energy consumption section and the elastic support section, the steel pipe is connected with the flange plate 4-1 through welding seams, and bolt holes are reserved on the flange plate 4-1. The stiffening rib plate 5 is a steel plate, the end plate 6 is a thicker round steel plate, the diameter ratio of the round steel plate is slightly larger than that of the outer steel pipe 2, and the stiffening rib plate is used for connecting the gusset plate 1 and the outer steel pipe 2. The inner steel pipe 7 is a steel pipe with the diameter the same as that of the buckling energy dissipation steel pipe 3, the cross stiffening ribs 8 are composed of 4 rib plates with the same size, the rib plates are welded on the inner side of the outer steel pipe 2 and are used for preventing the local bending of the end plate 6, and the included angle between the cross stiffening ribs 8 is 90 degrees. The concrete is fine aggregate concrete 9 which is mainly used for increasing the bending rigidity of the member, and a gap is reserved between the concrete and the inner steel pipe 7 to avoid the concrete from being pressed under the action of load.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. The utility model provides a removable combination steel pipe of power consumption section supports which characterized in that: the steel tube reinforced concrete composite beam comprises gusset plates, end plates, elastic support sections, buckling energy dissipation sections and stiffening rib plates, wherein each elastic support section comprises an outer steel tube, a gap part in each outer steel tube is filled with fine aggregate concrete, an inner steel tube is arranged in an inner cavity at one end of each outer steel tube, the outer steel tubes and the inner steel tubes are welded together through the stiffening rib plates, and a flange plate is welded at one end of each inner steel tube; the buckling energy dissipation section comprises buckling energy dissipation steel pipes, flange plates are welded at two ends of each buckling energy dissipation steel pipe, and the flange plates are connected with the flange plates welded at the end parts of the inner steel pipes through bolts; the other end of each outer steel pipe is connected with the end plate, and the gusset plate is connected with the end plate through a welding seam; the buckling energy-consuming steel pipe is made of mild steel or Q235 steel.
2. The replaceable energy-dissipating section combined steel pipe support as claimed in claim 1, wherein: the outer steel pipe and the inner steel pipe are welded together through 6 stiffening rib plates, the 6 stiffening rib plates are uniformly distributed in the circumferential direction, and the central angle between every two adjacent stiffening rib plates is 60 degrees; the stiffening rib plates are welded on the inner side of the outer steel pipe and the outer side of the inner steel pipe.
3. The replaceable energy-dissipating section combined steel pipe support as claimed in claim 1, wherein: the diameter of the inner steel pipe is the same as that of the buckling energy dissipation steel pipe, and a flange plate is welded at one end, extending out of the outer steel pipe, of the inner steel pipe.
4. The replaceable energy-dissipating section combined steel pipe support as claimed in claim 1, wherein: and the flange plates welded at the end parts of the inner steel pipe and the buckling energy dissipation steel pipe are all round steel plates with the outer diameter larger than that of the buckling energy dissipation steel pipe, and bolt holes are reserved on the flange plates.
5. The replaceable energy-dissipating section combined steel pipe support as claimed in claim 1, wherein: the gusset plate is the cross gusset plate, and the cross gusset plate is formed by 4 rectangle steel sheets perpendicular welding of each other, and it has 6 bolt holes to open on every rectangle steel sheet, the steel of gusset plate and end plate is unanimous.
6. The replaceable energy-dissipating section combined steel pipe support as claimed in claim 1, wherein: the diameter of the end plate is larger than that of the outer steel pipe; the outer steel pipe is made of steel with the yield strength of 420MPa or 460 MPa.
7. The replaceable energy-dissipating section combined steel pipe support as claimed in claim 1, wherein: the other side of the end plate is fixed with the outer steel pipe of the elastic support section through a cross stiffening rib; the cross stiffening rib is formed by welding 4 ribbed plates with the same size mutually and vertically and is welded on the inner side of the outer steel pipe.
8. The replaceable energy-dissipating section combined steel pipe support as claimed in claim 1, wherein: and a gap is reserved between the fine aggregate concrete and the inner steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011338773.2A CN112376720A (en) | 2020-11-25 | 2020-11-25 | Combined steel pipe support with replaceable energy consumption sections |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011338773.2A CN112376720A (en) | 2020-11-25 | 2020-11-25 | Combined steel pipe support with replaceable energy consumption sections |
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| Publication Number | Publication Date |
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| CN112376720A true CN112376720A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011338773.2A Pending CN112376720A (en) | 2020-11-25 | 2020-11-25 | Combined steel pipe support with replaceable energy consumption sections |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706141A (en) * | 2020-06-05 | 2020-09-25 | 重庆大学 | Full-assembly three-section type buckling-restrained energy-dissipation brace |
-
2020
- 2020-11-25 CN CN202011338773.2A patent/CN112376720A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706141A (en) * | 2020-06-05 | 2020-09-25 | 重庆大学 | Full-assembly three-section type buckling-restrained energy-dissipation brace |
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