CN101899887A - Composite anti-explosion post of reinforced concrete with encased steel plate and construction method thereof - Google Patents
Composite anti-explosion post of reinforced concrete with encased steel plate and construction method thereof Download PDFInfo
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- CN101899887A CN101899887A CN 201010223522 CN201010223522A CN101899887A CN 101899887 A CN101899887 A CN 101899887A CN 201010223522 CN201010223522 CN 201010223522 CN 201010223522 A CN201010223522 A CN 201010223522A CN 101899887 A CN101899887 A CN 101899887A
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Abstract
The invention provides a composite anti-explosion post of a reinforced concrete with encased steel plate and a construction method thereof. The outer surface of the anti-explosion post is successively welded and coated with a long steel sleeve, an additional steel plate and a protective steel plate from inside to outside, wherein the periphery of the bottom end of the additional steel plate is welded with an annular steel plate and a junction plate with a radiation anchor plate, and the outer surface of the top end of the long steel sleeve is successively welded with the annular junction plate and the annular steel plate from top to bottom. The invention utilizes the steel plate to protect the outer surface of the reinforced concrete post and improves impact load resistance ability. The joint of the post and the reinforced concrete beam plate is connected by a metal junction plate to reduce the possibility of breaking a node when receiving impact load; and the metal junction plate with a radiation anchor plate on the bottom of the post is welded with the upper layer of reinforcing steel bar of a raft foundation, thus further improving the impact resistance of the reinforced concrete post.
Description
Technical field
The present invention relates to a kind of composite anti-explosion post of reinforced concrete with encased steel plate and job practices.
Background technology
In recent years, important building is because the explosion accident of meeting accident property, and the reinforced concrete column in the building is damaged, and makes that the beam slab around the pillar happens occasionally owing to losing the case that vertical support caves in.Therefore need further reinforced steel concrete post, to improve the seismic bearing capacity of reinforced concrete post.Post encased steel method is a kind of post reinforcing method commonly used, and it has easily and fast, column section is influenced little advantage.Usually adopt at present in the mode of existing pillar outside cornerite steel and reinforce, this method is difficult to guarantee steel plate and the acting in conjunction of former concrete Transfer of Shear.The reinforced concrete column of building is carried out steel plate strengthen protection, can well avoid important building to cave under the blast impulse load suffering.
Summary of the invention
The object of the present invention is to provide a kind of intensity height, speed of application is fast, interfacial area is less composite anti-explosion post of reinforced concrete with encased steel plate.
Another object of the present invention is to provide a kind of job practices of composite anti-explosion post of reinforced concrete with encased steel plate.
For achieving the above object, the present invention is by the following technical solutions:
A kind of composite anti-explosion post of reinforced concrete with encased steel plate, this anti-explosion post external surface overlaps successively from inside to outside and is welded with elongated steel sleeve, additional steel plate and protection steel plate, the top external surface of this elongated steel sleeve is welded with metallic interconnect and doughnut-shaped steel plate from top to bottom successively, the reinforcing bar that is implanted with on this metallic interconnect and beam slab welding; Should be welded with metallic interconnect and the doughnut-shaped steel plate of being with the radiation anchor slab around the bottom of additional steel plate; reinforcing bar welding in the bottom of this metallic interconnect and the mat foundation of anti-explosion post; the upper surface of this metallic interconnect and the welding of this doughnut-shaped steel plate, weld with the bottom of protection steel plate the upper end of this doughnut-shaped steel plate.
In composite anti-explosion post of reinforced concrete with encased steel plate of the present invention, be connected the destruction of a node in the time of to reduce impact load with metallic interconnect with the concrete beam plate connecting portion at elongated steel sleeve.
Described elongated steel sleeve is circle or square bar sleeve pipe, and its thickness is 5～25mm, is preferably 15mm.
Described additional steel plate and protection steel plate are positioned at the latter half of described elongated steel sleeve, and the height of described additional steel plate and protection steel plate is 1.1～2.5m, and thickness is 10mm.
Leave the space of 65～100mm between described protection steel plate and the additional steel plate.Leave this space and be in order strenuous vibration to take place or when blasting, this space can absorb energy, to reduce the impact of steel plate deformed to pillar when extraneous.
The thickness of described metallic interconnect is 15mm, and the thickness of described doughnut-shaped steel plate is 15mm.
A kind of job practices of composite anti-explosion post of reinforced concrete with encased steel plate may further comprise the steps:
(1) preliminary treatment is carried out on the reinforced concrete post surface, polishing reinforced concrete post surface removal defective;
(2) remove the concrete pavement of reinforced concrete post bottom periphery, expose the reinforcing bar of mat foundation, the metallic interconnect that will have the radiation anchor slab welds with reinforcing bar; Doughnut-shaped steel plate is installed then, with metallic interconnect and doughnut-shaped steel plate welding;
(3) reinforcing bar is implanted in the zone that is connected with beam slab in the steel concrete column top, and metallic interconnect is installed, and doughnut-shaped steel plate is installed in this metallic interconnect and reinforcing bar welding then, with metallic interconnect and doughnut-shaped steel plate welding;
(4) at the concrete external surface elongated steel sleeve is installed, this elongated steel sleeve is spliced by a plurality of sleeve components, at first will use spot welding to fix between each sleeve component, using pipeline all-position auto-welding machine that each sleeve component horizontal vertical is connected seam then welds, become elongated steel sleeve, and with elongated steel sleeve and doughnut-shaped steel plate welding;
(5) at elongated steel sleeve lower end external surface additional steel plate is installed, and will be added steel plate and doughnut-shaped steel plate welding;
(6) at additional steel plate external surface the protection steel plate is installed,, and will be protected the upper end of steel plate, additional steel plate to be connected seam welding with the level of elongated steel sleeve with the bottom of this protection steel plate and the upper surface welding of doughnut-shaped steel plate;
(7) with epoxy resin grouting treatment is carried out in the slit that the metallic interconnect of steel concrete column top and bottom and mat foundation, beam slab coupling part form;
(8) handle unnecessary weld seam and welding slag, apply weld seam with containing yellow zinc chromate primer paint.
Above-mentioned metallic interconnect need carry out surfacing before using, through derusting by sandblasting, zinc-plated processing, zinc-plated thickness is greater than 60 μ m.
In above-mentioned steps, when the right angle weld seam that forms between each member was welded, for guaranteeing weldquality, the leg of all fillet welds was of a size of 0.8～1.2 times of the thin member thickness in fillet weld place.Leg is undersized, and then weldering is not firm, easily cracks; If leg is oversize, weldment easily burn penetrates, and when welt welds, easily produces the undercut phenomenon in addition.After welding is finished, smear weld seam, anti-oxidation, corrosion with containing yellow zinc chromate primer paint.
The invention has the advantages that:
Anti-explosion post of the present invention adopts combining structure to strengthen the ability that pillar is resisted destruction, the intensity height; The cross section of this explosion-proof pillar is less, does not influence the design and the function of use of architectural appearance.Easy construction, progress is fast, the duration is short, and the construction area occupied is few, increases economic efficiency.
Description of drawings
Fig. 1 is the vertical cross-section figure of composite anti-explosion post of reinforced concrete with encased steel plate of the present invention.
Fig. 2 is the enlarged drawing of composite anti-explosion post of reinforced concrete with encased steel plate bottom node A of the present invention.
Fig. 3 is the enlarged drawing of composite anti-explosion post of reinforced concrete with encased steel plate top node C of the present invention.
Fig. 4 is the schematic diagram of composite anti-explosion post of reinforced concrete with encased steel plate mat foundation of the present invention.
Fig. 5 is the a-a sectional drawing of composite anti-explosion post of reinforced concrete with encased steel plate mat foundation of the present invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Reinforced concrete post of the present invention adopts spiral stirrup to reduce the elastic deformation of self being impacted, and in addition, strengthens the rigidity of pillar by the reinforcement ratio that increases pillar.Be illustrated in figure 1 as the vertical cross-section figure of composite anti-explosion post of reinforced concrete with encased steel plate of the present invention, Fig. 2 and Fig. 3 are the enlarged drawing of node A and node C among Fig. 1.The external surface of composite anti-explosion post of reinforced concrete with encased steel plate of the present invention overlaps successively from inside to outside and is welded with elongated steel sleeve 1, additional steel plate 2 and protection steel plate 3; additional steel plate 2 and protection steel plate 3 are positioned at the latter half of described elongated steel sleeve 1; the top external surface of this elongated steel sleeve 1 is welded with metallic interconnect 4 ' and doughnut-shaped steel plate 5 ' from top to bottom successively; the zone that this anti-explosion post is connected with beam slab is implanted with reinforcing bar 8, this reinforcing bar 8 and metallic interconnect 4 ' welding.Should be welded with metallic interconnect 4 and the doughnut-shaped steel plate 5 of being with the radiation anchor slab around the bottom of additional steel plate; reinforcing bar 7 welding in the bottom of this metallic interconnect 4 and the mat foundation of anti-explosion post 6; the structure of mat foundation such as Fig. 4, shown in Figure 5; the upper surface of this metallic interconnect 4 and 5 welding of this doughnut-shaped steel plate, weld with the bottom of protection steel plate 3 upper end of this doughnut-shaped steel plate 5.
Wherein, the thickness of elongated steel sleeve can adopt the steel plate of 5～25mm according to designing requirement, the thickness of additional steel plate and protection steel plate is 10mm, the height of additional steel plate and protection steel plate can be chosen as 1.1～2.5mm as required, leaves the space of 65～100mm between protection steel plate and the additional steel plate; The thickness of metallic interconnect and doughnut-shaped steel plate is 15mm, and above-mentioned steel plate can adopt the steel of Q345 grade.
The concrete job practices of above-mentioned composite anti-explosion post of reinforced concrete with encased steel plate may further comprise the steps:
1) pillar surfacing in early stage and metal sheet processing.
The verticality of a, test reinforced concrete post with sanding machine polishing surface, makes it vertically straight; Remove the rusty stain of concrete surface, grease, oxide, dust, moisture, hazardous substancess such as salt make metal sheet surface not have rusty stain and cut.
B, derusting by sandblasting is carried out on stand-by metallic interconnect surface handled, make attachments such as its no visible grease in surface, dirt, oxide skin, iron rust and skin of paint, derusting grade reaches the SA2.5 level, and is zinc-plated then, and thickness is 60 microns.
2) metallic interconnect and the doughnut-shaped steel plate of installation steel concrete column top and bottom.
A, raw material are transported to the scene, around reinforced concrete post, scaffold erecting and movable working platform.
B, utilize pneumatic concrete pulverizing machine cutter to remove the concrete pavement of reinforced concrete post bottom periphery, the reinforcing bar of mat foundation is come out, remove the unnecessary concrete of rebar surface, the semi-circular metallic interconnect of mounting strap radiation anchor slab, itself and exposed reinforcing bar are welded, and the mode with continuous welding connects two semi-circular metallic interconnects then; The two halves doughnut-shaped steel plate is installed, and with two halves doughnut-shaped steel plate and metallic interconnect welding, the mode with continuous welding is stitched together the two halves doughnut-shaped steel plate again.
The T13-150 reinforcing bar is implanted in the zone of c, the 200mm that is connected with beam slab in the steel concrete column top, also can reserve the T13 reinforcing bar in advance, two halves endless metal junction plate is welded with the reinforcing bar of implanting respectively, and the mode with continuous welding is stitched together two halves endless metal junction plate then; Two semi-circular steel plates are installed, the two halves doughnut-shaped steel plate is welded with metallic interconnect respectively, the two halves doughnut-shaped steel plate connects with the mode of continuous welding.
3) the elongated steel sleeve of steel concrete outer surface of column is installed
A, begin to install the thick elongated steel sleeve of 15mm from bottom to top from the steel concrete column bottom, for easy for installation, this elongated steel sleeve is spliced by a plurality of shroud members, use the mode of spot welding to fix between each shroud member, use enough bearing diagonals and suitable welding sequence to avoid welding the torsional deformation that causes, check the verticality of steel plate while installing, use the pipeline all-position automatic welding machine that each sleeve pipe horizontal vertical is connected seam then and weld, make its one-tenth as a whole.
B, trimming and grind off unnecessary weld seam welding slag are handled the surface that exposes with containing yellow zinc chromate primer paint.
4) the additional steel plate of steel concrete outer surface of column is installed
A, in distance steel concrete column bottom is the scope of 2.5m height, be that the semicircular steel plate of 10mm adopts the mode of spot welding to be fixed on the metallic interconnect of bottom of reinforced concrete post with thickness.
B, employing pipeline all-position auto-welding machine will weld between half and half circular steel plate and steel plate and the metallic interconnect.During this time, use enough bearing diagonal and suitable welding sequences to avoid welding the steel plate deformed that causes.
C, trimming and grind off unnecessary weld seam, welding slag is handled the surface that exposes with containing yellow zinc chromate primer paint.
5) the peripheral protection of steel concrete outer surface of column steel plate is installed
A, be that the semicircle steel plate of 10mm adopts the mode of spot welding to be fixed on the external surface of additional steel plate with thickness, the steel plate bottom is also fixed in the mode of spot welding with the metallic interconnect of steel concrete column bottom.
B, employing pipeline all-position auto-welding machine will weld between half and half circular steel plate and steel plate and the metallic interconnect.Use enough bearing diagonals and rational welding sequence to avoid welding the steel plate deformed that causes in the work progress.
C, trimming and grind off unnecessary weld seam, welding slag is handled the surface that exposes with containing yellow zinc chromate primer paint.
6) with epoxy resin grouting treatment is carried out in the slit that the metallic interconnect of steel concrete column top and bottom and mat foundation, beam slab coupling part form;
7) final mass of anti-explosion post is checked and accepted, and removes scaffold and site clearing.
The present invention utilizes steel plate protection steel concrete outer surface of column, increases the shock resistance weight bearing power.Pillar is connected with metallic interconnect with the concrete beam plate connecting portion, reduces the destruction of a node when by the impact load; The metallic interconnect and the mat foundation top reinforcement of pillar bottom band radiation anchor slab weld, and have further strengthened the impact resistance of reinforced concrete post.
Claims (9)
1. composite anti-explosion post of reinforced concrete with encased steel plate, it is characterized in that, this anti-explosion post external surface overlaps successively from inside to outside and is welded with elongated steel sleeve, additional steel plate and protection steel plate, the top external surface of this elongated steel sleeve is welded with metallic interconnect and doughnut-shaped steel plate from top to bottom successively, the reinforcing bar that is implanted with on this metallic interconnect and beam slab welding; Should be welded with metallic interconnect and the doughnut-shaped steel plate of being with the radiation anchor slab around the bottom of additional steel plate; reinforcing bar welding in the bottom of this metallic interconnect and the mat foundation of anti-explosion post; the upper surface of this metallic interconnect and the welding of this doughnut-shaped steel plate, weld with the bottom of protection steel plate the upper end of this doughnut-shaped steel plate.
2. composite anti-explosion post of reinforced concrete with encased steel plate according to claim 1 is characterized in that, described elongated steel sleeve is circle or square bar sleeve pipe.
3. composite anti-explosion post of reinforced concrete with encased steel plate according to claim 1 is characterized in that, the thickness of described elongated steel sleeve is 5～25mm.
4. composite anti-explosion post of reinforced concrete with encased steel plate according to claim 1; it is characterized in that; described additional steel plate and protection steel plate are positioned at the latter half of described elongated steel sleeve, and the height of described additional steel plate and protection steel plate is 1.1～2.5m, and thickness is 10mm.
5. composite anti-explosion post of reinforced concrete with encased steel plate according to claim 1 is characterized in that, leaves the space of 65～100mm between described protection steel plate and the additional steel plate.
6. composite anti-explosion post of reinforced concrete with encased steel plate according to claim 1 is characterized in that the thickness of described metallic interconnect is 15mm, and the thickness of described doughnut-shaped steel plate is 15mm.
7. the job practices of the described composite anti-explosion post of reinforced concrete with encased steel plate of claim 1 is characterized in that, may further comprise the steps:
(1) preliminary treatment is carried out on the reinforced concrete post surface, polishing reinforced concrete post surface removal defective;
(2) remove the concrete pavement of reinforced concrete post bottom periphery, expose the reinforcing bar of mat foundation, the metallic interconnect that will have the radiation anchor slab welds with reinforcing bar; Doughnut-shaped steel plate is installed then, with metallic interconnect and doughnut-shaped steel plate welding;
(3) reinforcing bar is implanted in the zone that is connected with beam slab in the steel concrete column top, and metallic interconnect is installed, and doughnut-shaped steel plate is installed in this metallic interconnect and reinforcing bar welding then, with metallic interconnect and doughnut-shaped steel plate welding;
(4) at the concrete external surface elongated steel sleeve is installed, this elongated steel sleeve is spliced by a plurality of sleeve components, at first will use spot welding to fix between each sleeve component, using pipeline all-position auto-welding machine that each sleeve component horizontal vertical is connected seam then welds, become elongated steel sleeve, and with elongated steel sleeve and doughnut-shaped steel plate welding;
(5) at elongated steel sleeve lower end external surface additional steel plate is installed, and will be added steel plate and doughnut-shaped steel plate welding;
(6) at additional steel plate external surface the protection steel plate is installed,, and will be protected the upper end of steel plate, additional steel plate to be connected seam welding with the level of elongated steel sleeve with the bottom of this protection steel plate and the upper surface welding of doughnut-shaped steel plate;
(7) with epoxy resin grouting treatment is carried out in the slit that the metallic interconnect of steel concrete column top and bottom and mat foundation, beam slab coupling part form;
(8) handle unnecessary weld seam and welding slag, apply weld seam with containing yellow zinc chromate primer paint.
8. the job practices of composite anti-explosion post of reinforced concrete with encased steel plate according to claim 7 is characterized in that, described metallic interconnect carried out derusting by sandblasting, zinc-plated processing before using, and zinc-plated thickness is greater than 60 μ m.
9. the job practices of composite anti-explosion post of reinforced concrete with encased steel plate according to claim 7, it is characterized in that, in described step, when the right angle weld seam that forms between each member was welded, the leg of fillet weld was of a size of 0.8～1.2 times of the thin member thickness in fillet weld place.
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| CN201010223522XA CN101899887B (en) | 2010-06-30 | 2010-06-30 | Composite anti-explosion post of reinforced concrete with encased steel plate and construction method thereof |
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| CN201010223522XA CN101899887B (en) | 2010-06-30 | 2010-06-30 | Composite anti-explosion post of reinforced concrete with encased steel plate and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328021A (en) * | 2011-07-12 | 2012-01-25 | 中核苏阀横店机械有限公司 | Anti-loss die template |
| CN102704698A (en) * | 2012-05-04 | 2012-10-03 | 南京盛圆土木工程高科技有限公司 | Fully prestressed and compositely integrally reinforced concrete structure |
| CN104060848A (en) * | 2014-07-02 | 2014-09-24 | 常州市规划设计院 | Reinforced concrete cylinder reinforcing device and reinforcing method |
| CN106958320A (en) * | 2017-04-24 | 2017-07-18 | 华南理工大学 | A kind of reinforced column tie hoop ruggedized construction and its construction method |
| CN109736444A (en) * | 2019-01-29 | 2019-05-10 | 哈尔滨工业大学（深圳） | Modularization assembling frame |
| CN109807547A (en) * | 2017-11-22 | 2019-05-28 | 苏州市艾西依钣金制造有限公司 | The welding of stainless steel wire drawing plate, polishing, drawing process |
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| JPH05321399A (en) * | 1992-05-19 | 1993-12-07 | Kajima Corp | Steel-pipe concrete pole |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328021A (en) * | 2011-07-12 | 2012-01-25 | 中核苏阀横店机械有限公司 | Anti-loss die template |
| CN102704698A (en) * | 2012-05-04 | 2012-10-03 | 南京盛圆土木工程高科技有限公司 | Fully prestressed and compositely integrally reinforced concrete structure |
| CN102704698B (en) * | 2012-05-04 | 2015-10-28 | 南京盛圆土木工程高科技有限公司 | A kind of full prestressing composite integrated reinforced steel concrete structure |
| CN104060848A (en) * | 2014-07-02 | 2014-09-24 | 常州市规划设计院 | Reinforced concrete cylinder reinforcing device and reinforcing method |
| CN106958320A (en) * | 2017-04-24 | 2017-07-18 | 华南理工大学 | A kind of reinforced column tie hoop ruggedized construction and its construction method |
| CN109807547A (en) * | 2017-11-22 | 2019-05-28 | 苏州市艾西依钣金制造有限公司 | The welding of stainless steel wire drawing plate, polishing, drawing process |
| CN109736444A (en) * | 2019-01-29 | 2019-05-10 | 哈尔滨工业大学（深圳） | Modularization assembling frame |
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| CN101899887B (en) | 2011-11-30 |
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Effective date of registration: 20181025 Address after: 518000 the 23 floor, Kim Chi Chi Valley, 1 Tong Ling Road, Lau sin Avenue, Nanshan District, Shenzhen, Guangdong. Co-patentee after: MCC TIANGONG GROUP Corp.,Ltd. Patentee after: CENTRAL RESEARCH INSTITUTE OF BUILDING AND CONSTRUCTION Co.,Ltd. Address before: 100088 West Tucheng Road, Haidian District, Beijing, No. 33 Co-patentee before: MCC TIANGONG GROUP Corp.,Ltd. Patentee before: CHINA JINGYE ENGINEERING Co.,Ltd. Co-patentee before: CENTRAL RESEARCH INSTITUTE OF BUILDING AND CONSTRUCTION CO., LTD. MCC Group |
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