CN103572894A - Occlusion light combination column - Google Patents
Occlusion light combination column Download PDFInfo
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- CN103572894A CN103572894A CN201310488480.6A CN201310488480A CN103572894A CN 103572894 A CN103572894 A CN 103572894A CN 201310488480 A CN201310488480 A CN 201310488480A CN 103572894 A CN103572894 A CN 103572894A
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Abstract
The invention discloses an occlusion light combination column, which belongs to the structural engineering field of civil engineering. The occlusion light combination column is formed by filling concrete in an interlayer of two layers of cold-bending thin wall steel tubes with longitudinal strengthening ribs. The strengthening ribs are of a trapezoid shape, and are embedded into the interlayer concrete, and thus the occlusal force of the steel tubes and the concrete is improved; the steel tubes are made of common steel, high-strength steel, stainless steel or fire-resistant steel, and the concrete can be common concrete, recycled concrete or high performance concrete. The occlusion light combination column can be a square-round occlusion light combination column, a square-square occlusion light combination column or a round-round occlusion light combination column according to the section form. The occlusion light combination column provided by the invention has the advantages that the mechanical property is good, steel is saved, the occlusion light combination column is light, few welding seams are formed, the fire-resistant property is good and the like, and the composite structure system is promoted to be economic, light, safe and reliable.
Description
Technical field
The invention belongs to the Structural Engineering field in civil engineering, particularly the light-duty coupled column of a kind of biting connecions.
Background technology
The advantages such as steel core concrete column has that bearing capacity is high, ductility good, easy construction and good economy performance, this class formation is widely used in subway, high building structure, industrial premises and bridge construction.But in actual use, still find this class A of geometric unitA there are the following problems to need further research and solving: (1), for meeting the requirement of steel plate local stability, the thickness of steel pipe walls is generally thicker, and member steel using amount is large.(2) sectional dimension is larger, and therefore deadweight is larger, and the impact of seismic load is larger.(3) weld seam of side, square-section member is generally positioned at bight area of stress concentration, so first member easily destroys in commissure.(4) all steel are all exposed in air, easily lose bearing capacity under fire effect.
Summary of the invention
The object of this invention is to provide the light-duty coupled column of a kind of biting connecions, it is characterized in that, the light-duty coupled column of described biting connecions comprises that the light-duty coupled column of square set side's biting connecions, outer tube and inner tube that the light-duty coupled column of square set circle biting connecions, outer tube and the inner tube that square-section outer tube and circular cross-section inner tube, consist of are square-section are the light-duty coupled column of circle cover circle biting connecions of circular cross-section, and outer tube and inner tube are the two-layer cold bending thin wall steel pipe with longitudinal reinforced rib, two-layer with the cold bending thin wall steel pipe interlayer of longitudinal reinforced rib in fill concrete.
The cross section of described longitudinal reinforced rib is trapezoidal shape, and ribs is trapped in sandwich concrete, to improve steel pipe and concrete snap-in force.
Described thin-wall steel tube refers to the radius-thickness ratio for circular cross-section steel pipe, or be greater than for the flakiness ratio of square-section steel pipe the situation that corresponding hollow steel tube local stability limits 1.5 times, the concrete existence of filling can slow down or stop the cripling of thin-wall steel tube, and the radius-thickness ratio of steel pipe or flakiness ratio value are as shown in the table.
| Steel type | Circular section | Square-section |
| Q235 | 123.77 | 75.79 |
| Q345 | 102.15 | 62.55 |
| Q390 | 96.08 | 58.83 |
| Q420 | 92.58 | 56.69 |
Described longitudinal reinforced rib arranges along whole pillar altitude range, and the distance between two longitudinal reinforced ribs should not be greater than 400mm.
The geometric centroid of described inner and outer tubes overlaps, and the inner chamber of described inner tube is hollow.
The material of described cold bending thin wall steel pipe is common iron, high-strength steel, stainless steel or fire-resistant steel.
Described common iron is the steel below yield strength 390MPa, selects Q235 or Q345.
Described high-strength steel is steel more than yield strength 390Mpa, selects Q390 or Q420 or the steel of high strength grade more.
Described concrete is that standard compressive strength is less than the ordinary concrete of 60Mpa, the regeneration concrete of regenerated aggregate or compressive strength are greater than the high performance concrete of 60Mpa, has the feature of high-durability, high workability.
The invention has the beneficial effects as follows with conventional steel concrete technology and compare, the present invention has following characteristics: (1) saving steel, can effectively reduce the steel using amount of this coupled column with the use of longitudinal reinforced rib cold bending thin wall steel pipe.(2) hollow section makes the deadweight of structure obtain very large reduction.(3) longitudinal reinforced rib improves the local stability of steel pipe, thereby improves resistance to compression and the shear-carrying capacity of coupled column.(4) after employing cold-bent pipe, weld seam is less.(5) to square-section, position while welding can reasonably have been avoided the area of stress concentration in bight, thereby effectively reduces the possibility that weld seam destroys.(6) good fire resistance: on the one hand, textural, sandwich concrete plays a protective role to longitudinal reinforced rib and interior steel pipe, and two-layer thin-wall steel tube also can effectively stop the explosion of sandwich concrete; On the other hand, on material, the use of fire-resistant steel also can further improve the fire endurance of member.
Accompanying drawing explanation
Fig. 1 to Fig. 3 is plan view of the present invention.
Fig. 4 to Fig. 6 is elevation of the present invention.
In figure: 1-is with the outer steel pipe of the cold bending thin wall of longitudinal stiffener, 2-concrete, 3-is with steel pipe in the cold bending thin wall of longitudinal stiffener.
The specific embodiment
The invention provides the light-duty coupled column of a kind of novel biting connecions, below in conjunction with drawings and Examples, structure of the present invention is further described.
The light-duty coupled column of described biting connecions comprises that the light-duty coupled column of square set side's biting connecions, outer tube 1 and inner tube 3 that the light-duty coupled column of square set circle biting connecions, outer tube 1 and the inner tube 3 that square-section outer tube and circular cross-section inner tube, consist of are square-section are the light-duty coupled column of circle cover circle biting connecions of circular cross-section, and outer tube 1 and inner tube 3 are the two-layer cold bending thin wall steel pipe with longitudinal reinforced rib, two-layer with the cold bending thin wall steel pipe interlayer of longitudinal reinforced rib in fill concrete 2.
Embodiment mono-: Fig. 1 and Fig. 4 are the light-duty coupled columns of square set side's biting connecions that outer tube and inner tube are square-section; Light-duty coupled column sectional dimension must meet the requirement between 0.25-0.75 of cross section hollow rate; Its cross section hollow rate is defined as d/ (D-2t), and d is interior outer diameter of steel pipes, and D is that outer outer diameter of steel pipes and t are inside and outside thickness of steel pipe.
Embodiment bis-: Fig. 2 and Fig. 5 are that outer tube is square tube, the light-duty coupled column of square set circle biting connecions that inner tube is pipe.Light-duty coupled column sectional dimension must meet the requirement between 0.25-0.75 of cross section hollow rate; Its cross section hollow rate is defined as d/ (D-2t), and d is interior outer diameter of steel pipes, and D is that outer outer diameter of steel pipes and t are inside and outside thickness of steel pipe.
Embodiment tri-: Fig. 3 and Fig. 6 are the light-duty coupled columns of circle cover circle biting connecions that outer tube and inner tube are circular cross-section.Light-duty coupled column sectional dimension must meet the requirement between 0.25-0.75 of cross section hollow rate; Its cross section hollow rate is defined as d/ (D-2t), and d is interior outer diameter of steel pipes, and D is that outer outer diameter of steel pipes and t are inside and outside thickness of steel pipe.
In each above-mentioned embodiment, during construction: at two geometric centroids, overlap with the cold bending thin wall steel pipe of longitudinal stiffener in placing of concrete interlayer; The material of described steel pipe can adopt common iron, high-strength steel, stainless steel or fire-resistant steel; Described concrete can adopt ordinary concrete, regeneration concrete or high performance concrete.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. the light-duty coupled column of biting connecions, it is characterized in that, the light-duty coupled column of described biting connecions comprises the light-duty coupled column of square set circle biting connecions being comprised of square-section outer tube and circular cross-section inner tube, outer tube and inner tube are the light-duty coupled column of square set side's biting connecions of square-section, outer tube and inner tube are the light-duty coupled column of circle cover circle biting connecions of circular cross-section, and outer tube and inner tube are the two-layer cold bending thin wall steel pipe with longitudinal reinforced rib, two-layer with the cold bending thin wall steel pipe interlayer of longitudinal reinforced rib in fill concrete, there is good mechanical properties, economize steel, lightweight, weld seam lacks and the good advantage of fire resistance.
2. the light-duty coupled column of biting connecions according to claim 1, is characterized in that, the cross section of described longitudinal reinforced rib is trapezoidal shape, and ribs is trapped in sandwich concrete, to improve steel pipe and concrete snap-in force.
3. the light-duty coupled column of biting connecions according to claim 1, it is characterized in that, described thin-wall steel tube refers to for the radius-thickness ratio of circular cross-section steel pipe or for the flakiness ratio of square-section steel pipe, is greater than the situation of 1.5 times of corresponding cored steel local stability restrictions, the concrete existence of filling can slow down or stop the cripling of thin-wall steel tube, and the radius-thickness ratio of steel pipe or flakiness ratio value are as shown in the table
。
4. the light-duty coupled column of biting connecions according to claim 1, is characterized in that, described longitudinal reinforced rib arranges along whole pillar altitude range, and the distance between two longitudinal reinforced ribs should not be greater than 400mm.
5. the light-duty coupled column of biting connecions according to claim 1, is characterized in that, the geometric centroid of described inner and outer tubes overlaps, and the inner chamber of described inner tube is hollow.
6. the light-duty coupled column of biting connecions according to claim 1, is characterized in that, the material of described cold bending thin wall steel pipe is common iron, high-strength steel, stainless steel or fire-resistant steel.
7. the light-duty coupled column of biting connecions according to claim 1, is characterized in that, described common iron is the steel below yield strength 390MPa, selects Q235 or Q345.
8. the light-duty coupled column of biting connecions according to claim 1, is characterized in that, described high-strength steel is steel more than yield strength 390Mpa, selects Q390 or Q420.
9. the light-duty coupled column of biting connecions according to claim 1, it is characterized in that, described concrete is that standard compressive strength is less than the ordinary concrete of 60Mpa, the regeneration concrete of regenerated aggregate or compressive strength are greater than the high performance concrete of 60Mpa, has the feature of high-durability, high workability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488480.6A CN103572894A (en) | 2013-10-17 | 2013-10-17 | Occlusion light combination column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488480.6A CN103572894A (en) | 2013-10-17 | 2013-10-17 | Occlusion light combination column |
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| Publication Number | Publication Date |
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| CN103572894A true CN103572894A (en) | 2014-02-12 |
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| CN201310488480.6A Pending CN103572894A (en) | 2013-10-17 | 2013-10-17 | Occlusion light combination column |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967205A (en) * | 2014-05-08 | 2014-08-06 | 广东工业大学 | FRP (Fiber Reinforced Polymer) pipe-recycled concrete-steel pipe double-walled hollow combined member |
| CN104746494A (en) * | 2015-04-03 | 2015-07-01 | 山东科技大学 | Hollow interlining FRP-steel tube sea sand recycled concrete member |
| CN106677430A (en) * | 2016-12-06 | 2017-05-17 | 天津大学 | Corrugation cross section aluminum-alloy pipe concrete column |
| CN107514096A (en) * | 2017-09-21 | 2017-12-26 | 华侨大学 | A kind of steel epoxy resin mortar multiple tube concrete combination column |
| CN108894328A (en) * | 2018-07-24 | 2018-11-27 | 沈阳建筑大学 | A kind of novel combined column and assemble method |
| CN109403205A (en) * | 2018-12-26 | 2019-03-01 | 中南大学 | Hollow sandwich multi-cavity steel tube concrete component and preparation method thereof |
| CN110528779A (en) * | 2019-08-09 | 2019-12-03 | 太原理工大学 | A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB427541A (en) * | 1933-09-25 | 1935-04-25 | Martyn Noel Ridley | Improvements in or relating to columns, stanchions and like solid or tubular structures |
| CN1975061A (en) * | 2006-12-25 | 2007-06-06 | 哈尔滨工业大学 | Steel reinforcement square, rectangular or polygonal steel pipe concrete column |
| CN201459914U (en) * | 2009-06-04 | 2010-05-12 | 浙江大学 | Cold bending forming steel pipe concrete with concrete injected into the middle of complex cross section |
| CN203669208U (en) * | 2013-10-17 | 2014-06-25 | 清华大学 | Light-weight meshing type concrete-filled steel tube composite column |
-
2013
- 2013-10-17 CN CN201310488480.6A patent/CN103572894A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB427541A (en) * | 1933-09-25 | 1935-04-25 | Martyn Noel Ridley | Improvements in or relating to columns, stanchions and like solid or tubular structures |
| CN1975061A (en) * | 2006-12-25 | 2007-06-06 | 哈尔滨工业大学 | Steel reinforcement square, rectangular or polygonal steel pipe concrete column |
| CN201459914U (en) * | 2009-06-04 | 2010-05-12 | 浙江大学 | Cold bending forming steel pipe concrete with concrete injected into the middle of complex cross section |
| CN203669208U (en) * | 2013-10-17 | 2014-06-25 | 清华大学 | Light-weight meshing type concrete-filled steel tube composite column |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967205A (en) * | 2014-05-08 | 2014-08-06 | 广东工业大学 | FRP (Fiber Reinforced Polymer) pipe-recycled concrete-steel pipe double-walled hollow combined member |
| CN104746494A (en) * | 2015-04-03 | 2015-07-01 | 山东科技大学 | Hollow interlining FRP-steel tube sea sand recycled concrete member |
| CN106677430A (en) * | 2016-12-06 | 2017-05-17 | 天津大学 | Corrugation cross section aluminum-alloy pipe concrete column |
| CN107514096A (en) * | 2017-09-21 | 2017-12-26 | 华侨大学 | A kind of steel epoxy resin mortar multiple tube concrete combination column |
| CN108894328A (en) * | 2018-07-24 | 2018-11-27 | 沈阳建筑大学 | A kind of novel combined column and assemble method |
| CN109403205A (en) * | 2018-12-26 | 2019-03-01 | 中南大学 | Hollow sandwich multi-cavity steel tube concrete component and preparation method thereof |
| CN110528779A (en) * | 2019-08-09 | 2019-12-03 | 太原理工大学 | A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness |
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Application publication date: 20140212 |