CN103015631A - Built-in polyvinyl chloride (PVC) pipe enhanced square steel pipe concrete combined column - Google Patents
Built-in polyvinyl chloride (PVC) pipe enhanced square steel pipe concrete combined column Download PDFInfo
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- CN103015631A CN103015631A CN2012105385834A CN201210538583A CN103015631A CN 103015631 A CN103015631 A CN 103015631A CN 2012105385834 A CN2012105385834 A CN 2012105385834A CN 201210538583 A CN201210538583 A CN 201210538583A CN 103015631 A CN103015631 A CN 103015631A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 239000004800 polyvinyl chloride Substances 0.000 title description 15
- 229920003023 plastic Polymers 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 13
- 238000010276 construction Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
一种内置PVC管增强方钢管混凝土组合柱，包括一根PVC圆形塑料管材、一根方钢管和混凝土，内浇灌有混凝土的PVC圆形塑料管嵌装于方钢管截面的中心，在组合柱截面的剩余空间内浇筑混凝土，形成管中有管的双套管多约束混凝土组合柱。本发明的组合柱具有改善方钢管混凝土柱综合性能的优点：通过增设PVC圆管，多重约束效应可使其内部分混凝土的约束效果得到改善，以此增强柱的轴向压缩能力；其次，在满足承载能力及抗震性能的需求下，通过使用价格低廉的PVC塑料管材，柱截面尺寸可大大减小，从而增加建筑空间的使用率，减少钢材的消耗和降低综合造价。
A built-in PVC pipe reinforced square steel pipe concrete composite column, including a PVC circular plastic pipe, a square steel pipe and concrete, the PVC circular plastic pipe poured with concrete is embedded in the center of the square steel pipe section, and the composite column Concrete is poured in the remaining space of the section to form a double-sleeved multi-constraint concrete composite column with pipes within pipes. The composite column of the present invention has the advantage of improving the comprehensive performance of the square concrete-filled steel tube column: by adding a PVC round tube, the multiple constraint effects can improve the constraint effect of the inner part of the concrete, thereby enhancing the axial compression capacity of the column; secondly, in To meet the requirements of bearing capacity and seismic performance, by using low-cost PVC plastic pipes, the cross-sectional size of the column can be greatly reduced, thereby increasing the utilization rate of building space, reducing the consumption of steel and reducing the overall cost.
Description
Technical field
The invention belongs to Concrete-Filled Square Steel Tube coupled column and pvc pipe concrete and combining structure post thereof, particularly a kind of built-in pvc pipe and strengthen the Concrete-Filled Square Steel Tube coupled column.
Background technology
Along with modern high-rise, stride and the development of heavy structure greatly, " steel-concrete combined structure " that combined by steel work and concrete structure obtained using more and more widely owing to having the two common advantage concurrently.The concrete filled steel tube coupled column is a kind of as combining structure, the concrete that Yin Qinei waters is surrounded by outside steel tube place, it crosswisely develops operative constraint, greatly improved the supporting capacity of pillar itself, and the Gao Peigang in cross section leads so that such coupled column has good anti-seismic performance.Scientific research and engineering practice show: every stress performance of Concrete-Filled Square Steel Tube coupled column is poor than the concrete filled steel tube coupled column, and this not only is embodied in the adhesive property between square steel pipe and the concrete interface, but also relates to the aspects such as capacity under axial.Trace it to its cause and be that round steel pipe and square steel pipe are not quite similar to the confinement mechanism of core concrete: the former is diameter because of its cross section axis of symmetry, round steel pipe is identical along each lateral deformation on the same cross section, so that can evenly be retrained behind the concrete compression lateral expansion, binding effect is good thus; And the constraint in square steel pipe cross section mainly concentrates on four bights, squeezes after the lateral deformation of core concrete pressurized and pushes away square steel pipe, and its middle part, every limit steel plate produces flexural deformation, and restriction ability descends, and holistic resistant behavior is just good not as concrete filled steel tube.
Consider the easy of bean column node construction, concrete-filled steel square tubular column has relatively large advantage than concrete-filled circular steel tube column in node processing, is convenient to the connection of beam column.For supporting capacity, workability and the comprehensive construction cost of taking into account concrete-filled steel square tubular column, improve and improve its confinement mechanism and become the key point that expansion Concrete-Filled Square Steel Tube coupled column is applied.
In order to reduce cost and saving steel, national correlation department has just proposed the policy of " to mould Dai Gang " very early, encourages Construction unit's energetic of plastics pipes material to be used for civil works.Polyvinyl chloride (PVC) tubing is widely used in the facilities such as rain (falling) water pipe and underground sewage pipe.Because it has the characteristics such as light weight, inexpensive, corrosion resistance is good, the range of application of pvc pipe will be more and more extensive.Similar to concrete filled steel tube, concrete and pvc pipe material are combined, thereby consist of the pvc pipe concrete, partly or entirely replace concrete filled steel tube, can reach the purpose of saving steel, reduction comprehensive cost.Given this, be necessary to design a kind of new Component composition method, the pvc pipe concrete is combined effectively with the Concrete-Filled Square Steel Tube coupled column, reach the bearing capacity that improves pillar with this, save the purpose of construction cost.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of built-in pvc pipe to strengthen the Concrete-Filled Square Steel Tube coupled column, adopt the enhancing technology of pipe middle sleeve, by Proper Match pvc pipe caliber, reach part concrete in the strong constraint square steel pipe pipe, improve the whole binding effect of core concrete, strengthen the load-carrying properties of coupled column.
The present invention solves the problems of the technologies described above with following technical scheme:
A kind of built-in pvc pipe strengthens the Concrete-Filled Square Steel Tube coupled column, comprise a PVC round plastic tubing, square steel pipe and concrete, interior pouring has concrete PVC round plastic pipe to be flush-mounted in the center in square steel pipe cross section, concreting in the remaining space in coupled column cross section forms two sleeve pipe multiple constraint concrete combination columns that pipe is arranged in the pipe.
The concrete of building is ordinary concrete, and its compound method is with China's related specifications standard.
The geometric center of PVC round plastic pipe and square steel pipe coincides with a bit.
Technical scheme of the present invention has following advantage with respect to prior art:
1) application of PVC sleeve technology can improve square steel pipe to the concrete binding effect in inside;
2) PVC sleeve technology and square steel pipe are united the inherent concrete of constraint, can form multiple constraint mechanism, further strengthen the axial compression ability of coupled column;
3) under the prerequisite that satisfies the supporting capacity demand, can reduce the use of steel, reduce cost.
Coupled column of the present invention has advantages of and improves the concrete-filled steel square tubular column combination property: the restriction ability of square steel pipe is inferior to round steel pipe, its restriction behavior is embodied in four bights mostly, it is little that middle steel plate participates in the whole contribution degree that retrains, by setting up the PVC pipe, the multiple constraint effect can make its interior concrete binding effect of part improve, and strengthens the axial compression ability of post with this; Secondly, under the demand that satisfies supporting capacity and anti-seismic performance, by using cheap PVC plastic pipe, column cross-section size can reduce greatly, thereby increases the utilization rate of architectural space, reduces the consumption of steel and reduces comprehensive cost.
Description of drawings
Fig. 1 is the cross sectional representation that a kind of built-in pvc pipe strengthens the Concrete-Filled Square Steel Tube coupled column;
Fig. 2 is the space schematic diagram that the built-in pvc pipe of Fig. 1 strengthens each combiner of Concrete-Filled Square Steel Tube coupled column.
Among the figure: 1-PVC round plastic pipe, square steel pipe 2, concrete 3.
The specific embodiment
Pvc pipe is for adopting polyvinyl chloride (Poly Vinyl Chloride) as the circular pipe of material, its material has the superperformances such as good processability, low cost of manufacture, corrosion-resistant, insulation, in addition relatively good geometrical stability and preferably physical and mechanical property, its tensile yield strength 〉=40MPa, modulus of elasticity is about 2749MPa.
Built-in pvc pipe of the present invention strengthens the Concrete-Filled Square Steel Tube coupled column, and profile is the same with original Concrete-Filled Square Steel Tube, and its essence is to increase a PVC round plastic pipe at the middle part, cross section.
When as the bottom column of little high level or highrise building or beneath which floor post, the load (comprising moment of flexure, shearing and axle power) that transmits because of top is larger, particularly axial force is on the impact of column cross-section size, and in order to satisfy the requirement of the required limit value of axial compression ratio of building structure aseismatic, necessarily require column section to have high supporting capacity.The effective means that improves bearing capacity is by enlarging the pvc pipe caliber, increasing the Area Ratio of pvc pipe concrete section and coupled column total cross-section.
When coupled column is the superstructure post of building, because upper load less, consider suitable saving concrete material and reducing construction cost, can suitably reduce column cross-section size along the building height direction, can satisfy requirement for bearing capacity by following means: 1) when more reducing column cross-section size, can increase pvc pipe concrete section ratio; When 2) reducing simultaneously post total cross-section physical dimension, each several part cross section ratio can remain unchanged.Or in order to consider easy construction, under the prerequisite that does not change column cross-section size, can suitably reduce by the way of dwindling the pvc pipe caliber bearing capacity in cross section.
The construction technology that built-in pvc pipe strengthens the Concrete-Filled Square Steel Tube coupled column has dual mode:
ⅰ, elder generation form the pvc pipe concrete at PVC round plastic pipe 1 interior placing of concrete 3, and the making of this pillar can be carried out or specialized enterprises production at the construction field (site).In order to improve construction speed and to accelerate concrete preparation, build and the reliability of maintenance, Carrying out Specialization production can effectively guarantee the intensity of its structure.
Then pvc pipe concrete pillar is flush-mounted in the center in square steel pipe cross section, concreting 3 in the remaining space of coupled column total cross-section, strengthen the Concrete-Filled Square Steel Tube coupled column thereby form built-in pvc pipe..
Or
ⅱ, PVC round plastic pipe 1 is flush-mounted in the center in square steel pipe cross section, concreting 3 in pvc pipe and in whole remaining spaces of coupled column strengthens the Concrete-Filled Square Steel Tube coupled column thereby form built-in pvc pipe again.
Claims (3)
1. a built-in pvc pipe strengthens the Concrete-Filled Square Steel Tube coupled column, it is characterized in that comprising a PVC round plastic pipe, square steel pipe and concrete, interior pouring has concrete PVC round plastic pipe to be flush-mounted in the center in square steel pipe cross section, concreting in the remaining space in coupled column cross section forms two sleeve pipe multiple constraint concrete combination columns that pipe is arranged in the pipe.
2. built-in pvc pipe as claimed in claim 1 strengthens the Concrete-Filled Square Steel Tube coupled column, it is characterized in that the concrete of building is ordinary concrete, and its compound method is with China's related specifications standard.
3. built-in pvc pipe as claimed in claim 1 strengthens the Concrete-Filled Square Steel Tube coupled column, it is characterized in that the geometric center of PVC round plastic pipe and square steel pipe coincides with a bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105385834A CN103015631A (en) | 2012-12-13 | 2012-12-13 | Built-in polyvinyl chloride (PVC) pipe enhanced square steel pipe concrete combined column |
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| CN2012105385834A CN103015631A (en) | 2012-12-13 | 2012-12-13 | Built-in polyvinyl chloride (PVC) pipe enhanced square steel pipe concrete combined column |
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| CN103015631A true CN103015631A (en) | 2013-04-03 |
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| CN2012105385834A Pending CN103015631A (en) | 2012-12-13 | 2012-12-13 | Built-in polyvinyl chloride (PVC) pipe enhanced square steel pipe concrete combined column |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083822A (en) * | 2017-03-10 | 2017-08-22 | 哈尔滨工业大学深圳研究生院 | The concrete filled steel tube new type of component and its processing method of a kind of steel tube confinement |
| CN108189221A (en) * | 2018-01-25 | 2018-06-22 | 华北水利水电大学 | Enhancement Method and the mold of the test block is made in regenerative pervious concrete test block |
| CN112417548A (en) * | 2020-11-03 | 2021-02-26 | 杭州铁木辛柯建筑结构设计事务所有限公司 | Method for improving one-way bending limit bearing capacity of circular steel tube concrete column cross section |
| CN113374175A (en) * | 2021-06-28 | 2021-09-10 | 广西大学 | Corrosion-resistant CFRP-high-strength steel composite pipe sea aggregate seawater concrete combined column |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4019301A (en) * | 1974-07-15 | 1977-04-26 | Fox Douglas L | Corrosion-resistant encasement for structural members |
| GB2331114A (en) * | 1997-06-20 | 1999-05-12 | Kieran Houston | Building systems and building components |
| CN201071566Y (en) * | 2007-07-06 | 2008-06-11 | 沈阳建筑大学 | Fiber-reinforced plastic-steel pipe-concrete column |
| CN201195911Y (en) * | 2007-11-28 | 2009-02-18 | 广东工业大学 | PVC pipe concrete column wrapped by fiberglass cloth |
| CN101748861A (en) * | 2010-01-05 | 2010-06-23 | 沈阳建筑大学 | Polyvinyl chloride (PVC) pipe reinforced concrete and steel pipe concrete laminated member |
-
2012
- 2012-12-13 CN CN2012105385834A patent/CN103015631A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4019301A (en) * | 1974-07-15 | 1977-04-26 | Fox Douglas L | Corrosion-resistant encasement for structural members |
| GB2331114A (en) * | 1997-06-20 | 1999-05-12 | Kieran Houston | Building systems and building components |
| CN201071566Y (en) * | 2007-07-06 | 2008-06-11 | 沈阳建筑大学 | Fiber-reinforced plastic-steel pipe-concrete column |
| CN201195911Y (en) * | 2007-11-28 | 2009-02-18 | 广东工业大学 | PVC pipe concrete column wrapped by fiberglass cloth |
| CN101748861A (en) * | 2010-01-05 | 2010-06-23 | 沈阳建筑大学 | Polyvinyl chloride (PVC) pipe reinforced concrete and steel pipe concrete laminated member |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083822A (en) * | 2017-03-10 | 2017-08-22 | 哈尔滨工业大学深圳研究生院 | The concrete filled steel tube new type of component and its processing method of a kind of steel tube confinement |
| CN108189221A (en) * | 2018-01-25 | 2018-06-22 | 华北水利水电大学 | Enhancement Method and the mold of the test block is made in regenerative pervious concrete test block |
| CN112417548A (en) * | 2020-11-03 | 2021-02-26 | 杭州铁木辛柯建筑结构设计事务所有限公司 | Method for improving one-way bending limit bearing capacity of circular steel tube concrete column cross section |
| CN112417548B (en) * | 2020-11-03 | 2024-02-20 | 杭州铁木辛柯建筑结构设计事务所有限公司 | Method for improving unidirectional bending limit bearing of cross section of round steel tube concrete column |
| CN113374175A (en) * | 2021-06-28 | 2021-09-10 | 广西大学 | Corrosion-resistant CFRP-high-strength steel composite pipe sea aggregate seawater concrete combined column |
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Application publication date: 20130403 |