CN110528779A - A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness - Google Patents
A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness Download PDFInfo
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- CN110528779A CN110528779A CN201910732081.7A CN201910732081A CN110528779A CN 110528779 A CN110528779 A CN 110528779A CN 201910732081 A CN201910732081 A CN 201910732081A CN 110528779 A CN110528779 A CN 110528779A
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- steel
- concrete
- stainless steel
- pipe
- steel tube
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube columns of crash-worthiness, including outer layer pipe (1) and inner layer steel pipe (3), have Sandwich filling object (2) between the outer layer pipe (1) and inner layer steel pipe (3).Wherein outside steel pipe uses widely used 304 stainless steel of austenite of field of civil engineering, this kind of material has many advantages, such as corrosion-resistant, high temperature resistant, environmentally protective；Inner layer steel pipe uses ordinary carbon steel.Sandwich filling self-compacting concrete between outer and inner tube.The section form of outer and inner tube is circle, and end face is equal and cross section geometric center is overlapped.Such component had both had good characteristic of solid plain concrete filled steel tubular member, such as bearing capacity height, plasticity and good, the easy for construction, good economy performance of ductility etc., and had the characteristics that hollow sandwich steel tube concrete pole is big from heavy and light and rigidity.
Description
Technical field
The invention belongs to engineering structure technical field, the excellent stainless steel outer packed hollow sandwich circle of specially a kind of crash-worthiness
Steel core concrete column.
Background technique
Concrete-filled Double Skin Steel Tube Columns are a kind of novel compositions structures put forward on solid steel tube concrete column foundation
Part.The inner layer steel pipe that the component is overlapped by cross-section centroid is formed with outside steel pipe, and makes three in steel pipe Sandwich filling concrete
Common stress.Concrete-filled double skin steel tube combined member had not only had the good characteristic of solid plain concrete filled steel tubular member, but also
With from the advantages such as heavy and light, bending stiffness be big, therefore have broad application prospects in civil engineering.Structure is during service
Locating external environment is often complexity, inevitably will receive the effect of the external conditions such as high temperature, deep-etching and collision.
The present invention will be designed for the component crashworthiness, based on test and Finite element analysis results, it is proposed that practical
The optimal hollow rate range of the component used in engineering, provides design recommendation for the practical implementation of such component.
Summary of the invention
It is an object of the present invention to provide a kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube columns of crash-worthiness, have
The advantages that anticollision, good, economic, construction is convenient durability.
The present invention is achieved by the following technical scheme:
A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness, including outer layer pipe, inner layer steel pipe and
Sandwich filling object between steel pipe；Wherein outer layer pipe uses stainless steel tube, and inner layer steel pipe uses carbon steel tubing, Sandwich filling object
Using self-compacting concrete.And the hollow rate of this stainless steel outer packed hollow sandwich concrete-filled circular steel tube column is defined in a certain range
It is interior.
Preferably, the ectonexine steel pipe is seamless steel pipe；The outer layer pipe is equal with inner layer steel pipe end face and cuts
Face geometric center is overlapped；The section of the outer layer pipe and inner layer steel pipe is circle；Such described component hollow rate is no more than
0.73；The outer layer pipe uses ordinary carbon steel using 304 stainless steel of common austenite in civil engineering, inner layer steel pipe.
In view of stainless steel has many advantages, such as that corrosion-resistant, high temperature resistant, ductility are good, can be effectively reduced using this kind of material as Covered with Angles
Adverse effect of the external environment to structural elements.
Stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of the present invention not only has solid plain steel tube concrete
The advantages of native component, also has from the advantages such as heavy and light, corrosion-resistant, anti-oxidant, impact resistance.The component hollow rate is to its impact resistance
It can influence significantly, when carrying out crashworthiness design to component, for hollow rate at 0.09 ~ 0.73, anti-collision performance is preferable；When
When component hollow rate is more than 0.73, impact resistance be can significantly reduce.So guaranteeing test specimen crashworthiness when hollow rate is 0.73
Dead load can be greatly reduced while performance.There is excellent corrosion resistance, resistance to as outside steel pipe using stainless steel
High temperatures and crashworthiness, thus can be used for the stronger area of some corrosivity or be susceptible to the building of shock to work as
In, such as bridge pier, subway station important actor.
The present invention has rational design, such component had both had the good characteristic of solid plain concrete filled steel tubular member, for example held
Carry power high, plasticity and good, the easy for construction, good economy performance of ductility etc., but have hollow sandwich steel tube concrete pole from heavy and light and
The big feature of rigidity has good practical application value.
Detailed description of the invention
Outer and inner tube section Fig. 1 shows stainless steel outer packed hollow sandwich concrete-filled circular steel tube column is that circular structure is shown
It is intended to.
Fig. 2 indicates that stainless steel outer packed hollow sandwich concrete-filled circular steel tube column acts on schematic diagram by Transverse Impact.
Fig. 3 indicates the hollow rate calculation method schematic diagram of stainless steel outer packed hollow sandwich concrete-filled circular steel tube column.
Fig. 4 indicates that stainless steel outer packed hollow sandwich concrete-filled circular steel tube column is rushed by Transverse Impact effect under different hollow rates
Hit power timeamplitude map.
Fig. 5 indicates that stainless steel outer packed hollow sandwich concrete-filled circular steel tube column is rushed by Transverse Impact effect under different hollow rates
Hit power plateau value curve graph.
Fig. 6 indicates that stainless steel outer packed hollow sandwich concrete-filled circular steel tube column is acted on whole by Transverse Impact under different hollow rates
Body deformation and local deformation schematic diagram.
Fig. 6 a indicates the I-I schematic cross-section of Fig. 6.
Fig. 7 indicates that stainless steel outer packed hollow sandwich concrete-filled circular steel tube column is acted on whole by Transverse Impact under different hollow rates
Body deformation values and local deformation value curve graph.
In figure: 1- outer layer pipe, 2- Sandwich filling object, 3- inner layer steel pipe, 4- rammer, 5- axle power；χ-hollow rate,D o-
Outer steel pipe diameter,D iInterior diameter of steel tube,t oOuter steel pipe thickness, I-spaning middle section,δ glOverall deformation,δ loLocal deformation.
Specific embodiment
The present invention provides a kind of crash-worthiness excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column, below by attached
Figure explanation and specific embodiment are described further the present invention.
The excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of a kind of crash-worthiness, as shown in Figure 1, including outer layer steel
Pipe 1 and inner layer steel pipe 3 have Sandwich filling object 2 between outer layer pipe 1 and inner layer steel pipe 3.
When it is implemented, outer layer pipe 1 uses 304 stainless steel tube of austenite, such stainless steel pipe is in engineering structure
It is more commonly used；Inner layer steel pipe 3 uses normal carbon steel pipe, and Sandwich filling object 2 uses self-compacting concrete.
Outer layer pipe 1 is equal with 3 end face of inner layer steel pipe and geometric center is overlapped.
Stainless steel outer packed hollow sandwich concrete-filled circular steel tube column not only has the excellent spy of solid plain steel core concrete column
Property, also there is good corrosion resistance and crashworthiness.Use hollow rate for 0.73 hollow sandwich concrete-filled circular steel tube column not
But dead load and construction cost are significantly reduced, and possesses preferable Impact Resisting Capability, therefore can be applied in some corrosion
Property it is stronger area or be easy in the building structure being collided.
As shown in figure 3, hollow rate χ≤0.73, χ=, whereinD oFor outer steel pipe diameter,D iFor interior diameter of steel tube,t o
For outer steel pipe thickness.Hollow rate is the key factor that such component carries out Impact Resisting Capability design.
Fig. 2 is stainless steel outer packed hollow sandwich concrete-filled circular steel tube column by Transverse Impact effect schematic diagram, according to reality
Situation applies axle power in test specimen two ends, and accidental load Transverse Impact is met under the conditions of two fixed ends.
Fig. 4 is that stainless steel outer packed hollow sandwich concrete-filled circular steel tube column is rushed by Transverse Impact effect under 4 kinds of hollow rates
Power timeamplitude map is hit, is found when hollow rate χ is more than 0.73, impact force peak value is greatly reduced, and obviously increases when percussion is held
Add, impact force plateau value is also declined, and illustrates that the impact resistance of test specimen can significantly reduce；When hollow rate χ is less than 0.73,
All very close to illustrating that the anti-collision performance of test specimen is more stable, thus when the impact force plateau value and percussion of test specimen are held
The optimal hollow rate of the test specimen is 0.73 out.
Fig. 5 is the impact that stainless steel outer packed hollow sandwich concrete-filled circular steel tube column is acted on by Transverse Impact under different hollow rates
Power plateau value curve graph, plateau value can be used as the judgment basis of test specimen anti-collision performance.As seen from the figure when hollow rate χ exists
When between 0.09-0.73, the impact force plateau value fluctuation of test specimen is smaller；When hollow rate χ is between 0.45-0.55, test specimen is rushed
It hits power plateau value and reaches peak value；After hollow rate χ is greater than 0.73, the impact force plateau value of test specimen is remarkably decreased.Show when examination
When the hollow rate χ of part is no more than 0.73, the anti-collision performance of the test specimen is preferable.
Fig. 6 is that stainless steel outer packed hollow sandwich concrete-filled circular steel tube column is become by Transverse Impact effect entirety under different hollow rates
Shape and local deformation schematic diagram, test specimen are being hit mainly by overall deformation and local deformation come the impact kinetic energy to drop hammer that dissipates
Acting on lower test specimen can integrally deform, and vertical displacement value is calculated by a plane of reference after shock and is defined as test specimen
Overall deformation；Recess may be occurred with the contact area of test specimen by, which dropping hammer, even destroys, and the deformation in this region is defined as trying
The local deformation of part.
Fig. 7 is that the overall deformation value of stainless steel outer packed hollow sandwich concrete-filled circular steel tube column and part become under different hollow rates
Shape value curve graph, it can be seen that hollow rate influences overall deformation and the local deformation of test specimen, but the influence to local deformation is more
It is significant.
Concrete-filled double skin steel tube combined member is gradually widely applied in towering pylon at present, ties in building
Structure also has broad application prospects in field.Structure external environment locating during service is often complexity, can not be kept away
That exempts from is acted on by some accidental loads, such as steamer hits bridge pier, high wind and sweeps along object impact structure, if not to such component into
Row anticollision designs its application range and will be subject to certain restrictions.The present invention is a kind of excellent stainless steel outer packed hollow of crash-worthiness
It is significant to show that hollow rate influences its Impact Resisting Capability based on existing test result for interlayer concrete-filled circular steel tube column.For reasonable proposal
Hollow rate range further influences hollow rate using finite element on the basis of experimental study to carry out system parameter analysis.Analysis
The result shows that its anti-collision performance is preferable when the hollow rate χ of test specimen is 0.09 ~ 0.73；When the hollow rate χ of test specimen is more than 0.73
Afterwards, the impact resistance of test specimen can significantly reduce.Present invention test specimen produced is from heavy and light, bending stiffness is big, it is corrosion-resistant, have it is excellent
Good anti-collision performance, all in all invention test specimen superior performance, caused by can promoting on a large scale to reduce impact disaster
Loss, guarantees the safety of the people's lies and property to the maximum extent.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although ginseng
It is described in detail according to the embodiment of the present invention, those skilled in the art should understand that, to technical solution of the present invention
It is modified or replaced equivalently, without departure from the spirit and scope of technical solution of the present invention, the present invention should all be covered by
In the protection scope of claims.
Claims (5)
1. a kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness, it is characterised in that: including outer layer steel
(1) and inner layer steel pipe (3) are managed, there are Sandwich filling object (2) between the outer layer pipe (1) and inner layer steel pipe (3).
2. a kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness according to claim 1,
Be characterized in that: the outer layer pipe (1) uses stainless steel tube, and the inner layer steel pipe (3) uses carbon steel tubing, the Sandwich filling
Object (2) uses self-compacting concrete.
3. a kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness according to claim 2,
Be characterized in that: the outer layer pipe (1) is equal with inner layer steel pipe (3) end face and geometric center is overlapped.
4. a kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness according to claim 3,
It is characterized in that: hollow rate χ≤0.73, χ=, whereinD oFor outer steel pipe diameter,D iFor interior diameter of steel tube,t oFor outer steel pipe
Thickness.
5. a kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness according to claim 4,
It is characterized in that: hollow rate χ=0.73.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732081.7A CN110528779A (en) | 2019-08-09 | 2019-08-09 | A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732081.7A CN110528779A (en) | 2019-08-09 | 2019-08-09 | A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness |
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| CN110528779A true CN110528779A (en) | 2019-12-03 |
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| CN201910732081.7A Pending CN110528779A (en) | 2019-08-09 | 2019-08-09 | A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456241A (en) * | 2020-04-14 | 2020-07-28 | 太原理工大学 | Stainless steel composite pipe-concrete-carbon steel member |
| CN113005888A (en) * | 2021-03-26 | 2021-06-22 | 中交隧道工程局有限公司南京分公司 | Energy-absorbing anti-collision high-performance pier |
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| CN202831403U (en) * | 2012-10-16 | 2013-03-27 | 浙江树人大学 | FRP (fiber reinforce plastic) pipe-concrete-steel pipe combination column |
| CN103572894A (en) * | 2013-10-17 | 2014-02-12 | 清华大学 | Occlusion light combination column |
| CN208056463U (en) * | 2017-09-21 | 2018-11-06 | 湖州职业技术学院 | A kind of stainless steel-concrete-carbon steel hollow sandwich coupled column |
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2019
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Patent Citations (3)
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| CN202831403U (en) * | 2012-10-16 | 2013-03-27 | 浙江树人大学 | FRP (fiber reinforce plastic) pipe-concrete-steel pipe combination column |
| CN103572894A (en) * | 2013-10-17 | 2014-02-12 | 清华大学 | Occlusion light combination column |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456241A (en) * | 2020-04-14 | 2020-07-28 | 太原理工大学 | Stainless steel composite pipe-concrete-carbon steel member |
| CN113005888A (en) * | 2021-03-26 | 2021-06-22 | 中交隧道工程局有限公司南京分公司 | Energy-absorbing anti-collision high-performance pier |
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Application publication date: 20191203 |