CN102409809A - Concrete-filled steel tube column provided with soft steel bushing and embedded with high-tenacity material and manufacturing method thereof - Google Patents
Concrete-filled steel tube column provided with soft steel bushing and embedded with high-tenacity material and manufacturing method thereof Download PDFInfo
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- CN102409809A CN102409809A CN2011103854819A CN201110385481A CN102409809A CN 102409809 A CN102409809 A CN 102409809A CN 2011103854819 A CN2011103854819 A CN 2011103854819A CN 201110385481 A CN201110385481 A CN 201110385481A CN 102409809 A CN102409809 A CN 102409809A
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Abstract
The invention discloses a concrete-filled steel tube column provided with a soft steel bushing and embedded with a high-tenacity material. The concrete-filled steel tube column comprises an inner pipe (1), core concrete (2), a soft steel bushing (3), bolts (4) and a high-tenacity composite material (6). In the invention, the bottom of an ordinary concrete-filled steel tube is provided with the soft steel bushing (3); and the high-tenacity composite material (6) is embedded into the space between the soft steel bushing (3) and the inner pipe (1). Under the action of conventional earthquake, the bottom soft steel bushing and an concrete-filled steel tube column have high overall working performance, high rigidity and high strength; and under the action of rare earthquake, shearing damage to the bolts is severe, the connection between an inner pipe and an outer pipe is weakened, the co-working performance degenerates, the ductility and energy consumption functions of the inner pipe and the outer pipe are brought into full play respectively, the overall regality is reduced, the structural period is prolonged, and the earthquake action is reduced; and after the soft steel bushing is arranged, an earthquake fortification line is increased, the structural safety is enhanced, and early impairment and damage to a high-strength steel plate are prevented and delayed.
Description
Technical field
The present invention relates to the steel core concrete column and the practice of the embedded high tenacity material of a kind of root bottom part band mild steel sleeve pipe, belong to the energy dissipation and damping control field in the building structure.
Background technology
Society is in progress, and people's living standard is also improving constantly, and various forms of buildings emerge in an endless stream, and satisfy the building of different functions of use and also arise at the historic moment.No matter be highly or profile, very big development is all arranged, this just needs the construction that new theory and new technology support this type building.Under the demand of social development, encased structures also just produces thereupon.
Concrete filled steel tube is made up of steel pipe and two kinds of materials of concrete, because the effect of pipe inner concrete, the stability of steel pipe wallboard improves a lot, and avoids or has delayed the too early generation cripling of steel pipe wallboard; Steel pipe is to the effect of contraction of its core concrete simultaneously; Make concrete be in the stress state of high complexity, thereby concrete intensity is improved, plasticity and toughness properties improve; The combination of two kinds of materials has remedied shortcoming separately, makes its material property obtain giving full play to.
When finding the encased structures premium properties through lot of test, Chinese scholars also finds there is the some shortcomings part.Encased structures destroys the position and generally all occurs in its bottom under severe earthquake action, and it is bent that local drum takes place the steel pipe wallboard easily; Afterwards because the decline of steel pipe wallboard bearing capacity; Inner concrete effect of contraction is weakened, cause steel pipe bight weld seam to be torn, the core concrete of the outside convex camber corresponding site of steel pipe is serious crisp broken; And this moment, its superstructure possibly also not reach surrender; The performance of material is not fully exerted, and has caused the serious waste of material, and a large amount of earthquake phenomenons have also proved this point.
The seismic design that is applied as building of mild-steel energy-consumption cushion technique and high tenacity material and seismic hardening provide a brand-new thinking, realize damping control and anti-seismic performance for high-rise and super highrise building an effective approach is provided.
Summary of the invention
Technical problem to be solved by this invention is: improve the anti-seismic performance of encased structures, delay or avoid because the destruction that encased structures bottom steel pipe drum song causes structure or member, give full play to the potential performance of material.The present invention has proposed the steel core concrete column and the practice of the embedded high tenacity material of a kind of bottom band mild steel sleeve pipe in order to address this problem.
The technical scheme that the present invention adopts is:
The steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe, it is characterized in that: said steel core concrete column comprises interior pipe, core concrete, mild steel sleeve pipe, bolt and high-ductility composite material; Interior pipe inside is perfused with core concrete, and the tube wall inboard, bottom or the outside of interior pipe are socketed with the mild steel sleeve pipe, and interior pipe is connected fixing with the mild steel sleeve pipe through bolt; Be embedded with high-ductility composite material between interior pipe and the mild steel sleeve pipe; The mild steel sleeve pipe put in the bottom ground or basic end face and with its anchoring, anchorage length should meet designing requirement.
Said steel core concrete column concrete filled steel tube is circle or square-section.
Pipe is rectangular steel pipe or round steel pipe in said.
Said mild steel sleeve pipe height above ground level or basic end face is 1.0h, and wherein h is the diameter in long limit size in rectangular steel pipe cross section or round steel pipe cross section.Just strengthen the plastic hinge territory of steel core concrete column, delay or avoid the destruction of concrete filled steel tube column bottom, improve its seismic bearing capacity and energy dissipation capacity.
Said high-ductility composite material comprises polymer modified cement-concrete, rubber fine aggregate cement concrete, general fibre concrete and high tenacity cement based fibrous concrete.
Be provided with bolt hole at mild steel sleeve pipe and the corresponding position of interior pipe, the diameter of mild steel sleeve pipe upper bolt hole is a bit larger tham the diameter of bolt, and the diameter of bolt is not less than the thickness of mild steel sleeve pipe and interior pipe.
The quantity of bolt hole should be according to the actual requirement of engineering setting; And should not be less than two rows; The level of every row's bolt hole is not more than 200mm with vertical spacing; High-ductility composite material to guarantee mild steel sleeve pipe and interior pipe and embedding contact closely, and the Kong Jing of same row's different directions is apart from being not less than 20mm, makes bolt can pass interior the pipe and mild steel sleeve pipe and reduce the weakening to same horizontal section smoothly.
The wall thickness of pipe in the thickness of mild steel sleeve pipe is not less than.
The thickness of high-ductility composite material is not less than the thickness of mild steel sleeve pipe, and is not less than 20mm.
The practice of the steel core concrete column of the embedded high tenacity material of above-mentioned bottom band mild steel sleeve pipe, production order is following:
For the situation of mild steel casing pipe sleeve at interior pipe lateral surface:
1) at the mild steel sleeve pipe corresponding position two-way reservation bolt hole of interior pipe with its bottom;
2) corresponding nut in the lateral surface correspondence position welding at the bolt hole place that interior pipe is reserved places between interior pipe and the mild steel sleeve pipe nut;
3) with the mild steel casing pipe sleeve in the tube wall outside, interior pipe bottom, and internally the mild steel sleeve pipe of pipe and bottom carries out correct positioning, manage in making and the same row of mild steel sleeve pipe on bolt hole on same level height;
4) penetrate bolt at the bolt hole place that reserves, the nut screwing clamping bolt through between interior pipe and the mild steel sleeve pipe pours into core concrete then in interior pipe;
5) also fastening nut on the bolt that exposes in the outside forms certain precompression, between mild steel sleeve pipe and interior pipe, embeds high-ductility composite material, is the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe after the moulding;
For the situation of mild steel casing pipe sleeve at interior pipe medial surface:
1) at the mild steel sleeve pipe corresponding position two-way reservation bolt hole of interior pipe with its bottom;
2) corresponding nut in the medial surface correspondence position welding at the bolt hole place that interior pipe is reserved places between interior pipe and the mild steel sleeve pipe nut;
3) with the mild steel casing pipe sleeve in interior pipe bottom tube wall inboard, and internally the mild steel sleeve pipe of pipe and bottom carries out correct positioning, manage in making and the same row of mild steel sleeve pipe on bolt hole on same level height;
4) penetrate bolt at the bolt hole place that reserves, through the nut screwing clamping bolt between interior pipe and the mild steel sleeve pipe;
5) also fastening nut on the bolt that exposes in the outside; Form certain precompression; Between mild steel sleeve pipe and interior pipe, embed high-ductility composite material, build core concrete afterwards again, be the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe after the moulding.
The steel core concrete column and the practice of the embedded high tenacity material of bottom band mild steel sleeve pipe of the present invention; Because steel core concrete column is after concreting; Tight a bolt and embed high-ductility composite material again after producing precompression; The rigidity of mild steel sleeve pipe and inner steel pipe connecting portion with respect to steel duct concrete rigidity a little less than, formed an iron hand in a velvet glove structure, this structure helps the energy dissipation capacity under geological process; Can give full play to the energy dissipation capacity of outside mild-steel energy-consumption steel pipe and inner steel pipe, make it under geological process, show more excellent performance.
The steel core concrete column and the practice of the embedded high tenacity material of bottom band mild steel sleeve pipe of the present invention, its inner high tensile steel tube can bear bigger load action, practices thrift steel, but bent or rupture failure are roused in large deformation down easily repeatedly.Experimental study under the low cycle repetitive load effect shows, the destruction of steel core concrete column mainly is surrender, flexing and the rupture failure of root steel pipe.
Beneficial effect
Compare with the common steel tube concrete column, the present invention has the following advantages:
Under the frequently occurred earthquake effect, concrete filled steel tube is stressed less, at this moment bottom mild steel sleeve pipe and interior pipe friction energy-dissipating under the effect of bolt pressure; This moment, the existence of bolt not only improved its friction energy-dissipating ability, and mild steel sleeve pipe and interior pipe are connected as a single entity, and its integral working is good, and rigidity is big, and intensity is also big, has good seismic bearing capacity; Under the rarely occurred earthquake effect, it is serious that bolt is cut damage, and the contact of interior pipe and mild steel sleeve pipe weakens; The co-operation performance degradation, interior pipe, mild steel sleeve pipe begin to give full play to separately its ductility and power consumption effect, and structure collectivity rigidity reduces; Natural vibration period is elongated, and geological process reduces, after the concrete filled steel tube column bottom increases mild steel sleeve pipe and high-ductility composite material; Be equivalent to increase anti-vibration defense lines one, improved the safety of structure.
The outside in the scope of plastic hinge territory, concrete filled steel tube column bottom adds the mild steel sleeve pipe; Embed high-ductility composite material again; Rarely occurred earthquake effect outside mild steel sleeve pipe is down at first surrendered; Consume the energy of earthquake input structure, can bring into play its drag and ductility effect, played preventing or delay the too early damage of high-strength steel sheet and the effect of destruction until structure or component damage.
Description of drawings
Fig. 1 is the floor map of the rectangular steel-tube concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe;
Fig. 2 is the floor map of the round steel pipe concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe;
Fig. 3 is the A-A sectional drawing among Fig. 1;
Fig. 4 is the B-B sectional drawing among Fig. 1;
Fig. 5 is the A-A section among Fig. 2;
Fig. 6 is the B-B sectional drawing among Fig. 2;
Fig. 7 is the floor map of mild steel sleeve pipe at the rectangular steel-tube concrete column of column body;
Fig. 8 is the floor map of mild steel sleeve pipe at the round steel pipe concrete column of column body;
Fig. 9 is the A-A sectional drawing among Fig. 7;
Figure 10 is the A-A sectional drawing among Fig. 8;
Wherein: pipe in the 1-, 2-core concrete, 3-mild steel sleeve pipe (outer tube), 4-screw rod, 5-nut, 6-high-ductility composite material, 7-ground or basic end face.
The specific embodiment
Below in conjunction with specific embodiment the present invention is further specified:
As shown in Figure 1, pipe 1, core concrete 2, mild steel sleeve pipe 3, bolt 4 and high-ductility composite material 6 in the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe comprises.The steel core concrete column of the embedded high tenacity material of this bottom band mild steel sleeve pipe and sectional drawing such as Fig. 3 and shown in Figure 4 of the practice.Interior pipe 1 inside is perfused with core concrete 2, and the tube wall inboard, bottom or the outside of interior pipe 1 are socketed with mild steel sleeve pipe 3, and interior pipe 1 is connected fixing with mild steel sleeve pipe 3 through bolt 4; Be embedded with high-ductility composite material 6 between interior pipe 1 and the mild steel sleeve pipe 3; Mild steel sleeve pipe 3 put in the bottom ground or basic end face 7 and with its anchoring.The steel core concrete column concrete filled steel tube is the square-section.Interior pipe 1 is a rectangular steel pipe.The height of mild steel sleeve pipe 3 end faces 7 above ground level or basic is 1.0h, and wherein h is long limit, rectangular steel pipe cross section size.High-ductility composite material 6 comprises polymer modified cement-concrete, rubber fine aggregate cement concrete, general fibre concrete and high tenacity cement based fibrous concrete.Be provided with bolt hole in mild steel sleeve pipe 3 and interior pipe 1 corresponding position, the diameter of mild steel sleeve pipe 3 upper bolt holes is a bit larger tham the diameter of bolt 4, and the diameter of bolt 4 is not less than the thickness of mild steel sleeve pipe 3 and interior pipe 1.The quantity of bolt hole should be according to the actual requirement of engineering setting, and should not be less than two rows, and the level of every row's bolt hole is not more than 200mm with vertical spacing, and the Kong Jing of same row's different directions is apart from being not less than 20mm.The wall thickness of pipe 1 in the thickness of mild steel sleeve pipe 3 is not less than.The thickness of high-ductility composite material 6 is not less than the thickness of mild steel sleeve pipe 3, and is not less than 20mm.Its production order is following:
1) at interior pipe 1 and the mild steel sleeve pipe 3 corresponding position two-way reservation bolt hole bottom it;
2) corresponding nut 5 in the lateral surface correspondence position welding at the bolt hole place that interior pipe 1 is reserved places between interior pipe 1 and the mild steel sleeve pipe 3 nut 5;
3) mild steel sleeve pipe 3 is enclosed within the pipe 1 bottom tube wall outside, and internally manage 1 and carry out correct positioning with the mild steel sleeve pipe 3 of bottom, the bolt hole in making on the same row of pipe 1 and mild steel sleeve pipe 3 is on same level height;
4) penetrate bolt 4 at the bolt hole place that reserves, tight a bolt 4, then perfusion core concrete 2 in interior pipe 1 through the nut 5 between interior pipe 1 and the mild steel sleeve pipe 3;
5) also fastening nut 5 on the bolt 4 that exposes in the outside forms certain precompression, between mild steel sleeve pipe 3 and interior pipe 1, embeds high-ductility composite material 6, is the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe after the moulding.
As shown in Figure 2, the section form of the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe is circular, its sectional drawing such as Fig. 5 and shown in Figure 6.Its basic principle and anti-seismic performance and preparation method and embodiment 1 are basic identical.
As shown in Figure 7, in order to guarantee attractive in appearance on the outer facade of structure, the inside of pipe 1 in the mild steel sleeve pipe 3 of the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe is placed on, its sectional drawing is as shown in Figure 9.So exteriorly, the steel core concrete column and the common steel tube concrete column of the embedded high tenacity material of this bottom band mild steel sleeve pipe are as broad as long, but its anti-seismic performance obviously is superior to the common steel tube concrete column.Present embodiment should be earlier embeds high-ductility composite material in inside, afterwards concreting again; Because high-ductility composite material is inner at concrete filled steel tube, and is higher to construction technical requirement, under the condition that meets design requirement, also can no longer embed high-ductility composite material, direct concreting, its preparation method and embodiment 1 are basic identical.
As shown in Figure 8, in order to guarantee attractive in appearance on the outer facade of structure, the mild steel sleeve pipe of the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe is placed on the inside of cylinder, and its sectional drawing is shown in figure 10.The difference of present embodiment and embodiment 3 is the different of section form, and present embodiment is circular, other and embodiment 3 basically identicals.
More than be exemplary embodiments of the present invention, enforcement of the present invention is not limited thereto.
Claims (10)
1. the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe, it is characterized in that: said steel core concrete column comprises interior pipe (1), core concrete (2), mild steel sleeve pipe (3), bolt (4) and high-ductility composite material (6); Interior pipe (1) inside is perfused with core concrete (2), and the tube wall inboard, bottom or the outside of interior pipe (1) are socketed with mild steel sleeve pipe (3), and interior pipe (1) is connected fixing with mild steel sleeve pipe (3) through bolt (4); Be embedded with high-ductility composite material (6) between interior pipe (1) and the mild steel sleeve pipe (3); Mild steel sleeve pipe (3) put in the bottom ground or basic end face (7) and with its anchoring.
2. the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe as claimed in claim 1, it is characterized in that: said steel core concrete column concrete filled steel tube is circle or square-section.
3. the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe as claimed in claim 1 is characterized in that: pipe (1) is rectangular steel pipe or round steel pipe in said.
4. the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe as claimed in claim 3; It is characterized in that: the height of said mild steel sleeve pipe (3) end face above ground level or basic (7) is 1.0h, and wherein h is the diameter in long limit size in rectangular steel pipe cross section or round steel pipe cross section.
5. the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe as claimed in claim 1, it is characterized in that: said high-ductility composite material (6) comprises polymer modified cement-concrete, rubber fine aggregate cement concrete, general fibre concrete and high tenacity cement based fibrous concrete.
6. the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe as claimed in claim 1; It is characterized in that: be provided with bolt hole at mild steel sleeve pipe (3) and the corresponding position of interior pipe (1); The diameter of mild steel sleeve pipe (3) upper bolt hole is a bit larger tham the diameter of bolt (4), and the diameter of bolt (4) is not less than the thickness of mild steel sleeve pipe (3) and interior pipe (1).
7. the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe as claimed in claim 6; It is characterized in that: the quantity of bolt hole should be according to the actual requirement of engineering setting; And should not be less than two rows; The level of every row's bolt hole is not more than 200mm with vertical spacing, and the Kong Jing of same row's different directions is apart from being not less than 20mm.
8. the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe as claimed in claim 1, it is characterized in that: the thickness of mild steel sleeve pipe (3) is not less than the wall thickness of interior pipe (1).
9. the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe as claimed in claim 1, it is characterized in that: the thickness of high-ductility composite material (6) is not less than the thickness of mild steel sleeve pipe (3), and is not less than 20mm.
10. like the practice of the steel core concrete column of the embedded high tenacity material of the described bottom of one of claim 1-9 band mild steel sleeve pipe, it is characterized in that: production order is following:
Be enclosed within the situation of interior pipe (1) lateral surface for mild steel sleeve pipe (3):
1) at interior pipe (1) and the corresponding position of mild steel sleeve pipe (3) the two-way reservation bolt hole bottom it;
2) go up corresponding nut (5) in the lateral surface correspondence position welding at the bolt hole place that interior pipe (1) is reserved, nut (5) is placed between interior pipe (1) and the mild steel sleeve pipe (3);
3) mild steel sleeve pipe (3) is enclosed within the tube wall outside, interior pipe (1) bottom, and internally the mild steel sleeve pipe (3) of pipe (1) and bottom carries out correct positioning, make bolt hole on the same row of interior pipe (1) and mild steel sleeve pipe (3) on same level height;
4) penetrate bolt (4) at the bolt hole place that reserves, tight a bolt (4), then perfusion core concrete (2) in interior pipe (1) through the nut (5) between interior pipe (1) and the mild steel sleeve pipe (3);
5) also fastening nut (5) on the bolt that exposes in the outside (4) forms certain precompression, between mild steel sleeve pipe (3) and interior pipe (1), embeds high-ductility composite material (6), is the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe after the moulding;
Be enclosed within the situation of interior pipe (1) medial surface for mild steel sleeve pipe (3):
1) at interior pipe (1) and the corresponding position of mild steel sleeve pipe (3) the two-way reservation bolt hole bottom it;
2) go up corresponding nut (5) in the medial surface correspondence position welding at the bolt hole place that interior pipe (1) is reserved, nut (5) is placed between interior pipe (1) and the mild steel sleeve pipe (3);
3) it is inboard mild steel sleeve pipe (3) to be enclosed within interior pipe (1) bottom tube wall, and internally the mild steel sleeve pipe (3) of pipe (1) and bottom carries out correct positioning, makes bolt hole on the same row of interior pipe (1) and mild steel sleeve pipe (3) on same level height;
4) penetrate bolt (4) at the bolt hole place that reserves, through the nut (5) between interior pipe (1) and the mild steel sleeve pipe (3) tight a bolt (4);
5) also fastening nut (5) on the bolt that exposes in the outside (4); Form certain precompression; Between mild steel sleeve pipe (3) and interior pipe (1), embed high-ductility composite material (6); Build core concrete (2) afterwards again, be the steel core concrete column of the embedded high tenacity material of bottom band mild steel sleeve pipe after the moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103854819A CN102409809B (en) | 2011-11-28 | 2011-11-28 | Concrete-filled steel tube column provided with soft steel bushing and embedded with high-tenacity material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103854819A CN102409809B (en) | 2011-11-28 | 2011-11-28 | Concrete-filled steel tube column provided with soft steel bushing and embedded with high-tenacity material and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102409809A true CN102409809A (en) | 2012-04-11 |
| CN102409809B CN102409809B (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103854819A Expired - Fee Related CN102409809B (en) | 2011-11-28 | 2011-11-28 | Concrete-filled steel tube column provided with soft steel bushing and embedded with high-tenacity material and manufacturing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767247A (en) * | 2012-07-06 | 2012-11-07 | 河海大学 | Hole-type steel-pipe externally-restricted buckling-restrained supporting component |
| CN103603464A (en) * | 2013-10-21 | 2014-02-26 | 清华大学 | Energy-dissipating anticollision station building column |
| CN107270111A (en) * | 2017-06-13 | 2017-10-20 | 清华大学 | A kind of concentric double pipe structure |
| CN112609921A (en) * | 2020-11-20 | 2021-04-06 | 石家庄犀利混凝土切割加固技术有限公司 | Elevator shaft frame system and construction method |
| CN114108810A (en) * | 2021-11-29 | 2022-03-01 | 扬州大学 | Composite enhanced steel sleeve joint for assembling FRP pipe truss and installation method |
| CN114458543A (en) * | 2022-01-25 | 2022-05-10 | 青岛华斯壮能源科技有限公司 | Novel rectangular pipe, wind power tower comprising novel rectangular pipe and installation method of wind power tower |
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| CN201762818U (en) * | 2010-09-16 | 2011-03-16 | 南京林业大学 | FRP-rubber-steel compound pipe concrete structure |
| CN102108761A (en) * | 2011-03-02 | 2011-06-29 | 大连理工大学 | Fiber reinforced plastics-steel composite pipe restricted structural steel high-strength concrete column |
| CN202380638U (en) * | 2011-11-28 | 2012-08-15 | 北京工业大学 | Concrete filled steel tube column with bottom provided with soft steel sleeve and inside embedded with high toughness materials |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767247A (en) * | 2012-07-06 | 2012-11-07 | 河海大学 | Hole-type steel-pipe externally-restricted buckling-restrained supporting component |
| CN103603464A (en) * | 2013-10-21 | 2014-02-26 | 清华大学 | Energy-dissipating anticollision station building column |
| CN103603464B (en) * | 2013-10-21 | 2015-10-28 | 清华大学 | Consume energy crashproof station post |
| CN107270111A (en) * | 2017-06-13 | 2017-10-20 | 清华大学 | A kind of concentric double pipe structure |
| CN112609921A (en) * | 2020-11-20 | 2021-04-06 | 石家庄犀利混凝土切割加固技术有限公司 | Elevator shaft frame system and construction method |
| CN114108810A (en) * | 2021-11-29 | 2022-03-01 | 扬州大学 | Composite enhanced steel sleeve joint for assembling FRP pipe truss and installation method |
| CN114458543A (en) * | 2022-01-25 | 2022-05-10 | 青岛华斯壮能源科技有限公司 | Novel rectangular pipe, wind power tower comprising novel rectangular pipe and installation method of wind power tower |
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| Publication number | Publication date |
|---|---|
| CN102409809B (en) | 2013-11-27 |
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