CN103015741A - Method for reinforcing prestressed concrete core slabs by sticking bamboo boards - Google Patents
Method for reinforcing prestressed concrete core slabs by sticking bamboo boards Download PDFInfo
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- CN103015741A CN103015741A CN2012105710525A CN201210571052A CN103015741A CN 103015741 A CN103015741 A CN 103015741A CN 2012105710525 A CN2012105710525 A CN 2012105710525A CN 201210571052 A CN201210571052 A CN 201210571052A CN 103015741 A CN103015741 A CN 103015741A
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- prestressed concrete
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Abstract
The invention relates to the field of building engineering, and discloses a method for reinforcing prestressed concrete core slabs by sticking bamboo boards. The technical scheme of the method is that bamboo boards are stuck to tensioned edges of prestressed concrete core slabs according to the stress mode of freely-supported prestressed concrete core slabs (upper parts are compressed edges, and lower parts are pressed edges), so that the carrying capacity is increased. According to the method, the construction speed is high, the influence range is small, and the carrying capacities and deformation of the prestressed concrete core slabs can meet subsequent use requirements; and the carrying capacities of reinforced prestressed concrete core slabs are increased by over 50 percent than that before reinforcement. In the method, the bamboo boards which are reproducible natural fast growing materials and have very high tensile strength are taken as reinforcing materials. The prestressed concrete core slabs are reinforced by sticking the bamboo boards, so that the consumption of resource energy in the existing building reinforcing and refitting industry can be lowered effectively.
Description
Technical field
The present invention relates to building engineering field, be specifically related to the reinforcing reparation of existing building, is that a kind of the utilization pasted the method that bamboo clappers is reinforced prefabricated concrete hollow slab.
Background technology
Prefabricated concrete hollow slab (claiming again precast hollow slab) has obtained applying on a large scale in China.After using for many years, aging or the damage to a certain degree of prefabricated concrete hollow slab ubiquity, and because the part building uses the function adjustment that its service load is increased, safety stock obviously descends, need to improve its bearing capacity by rational reinforcement means, guarantee safe handling.
Not only speed of application is fast, influence basin is little to take to paste bamboo clappers reinforcing prefabricated concrete hollow slab, and can guarantee that the bearing capacity of prefabricated concrete hollow slab satisfies follow-up instructions for use.Bamboo clappers is renewable natural fast-growing material, and employing bamboo clappers reinforcing existing building can effectively reduce the consumption to energy resource, improves the sustainability of reconstruction of existing building industry.
Summary of the invention
The present invention aims to provide and pastes the method that bamboo clappers is reinforced prefabricated concrete hollow slab.
This stickup bamboo clappers is reinforced the method for prefabricated concrete hollow slab, its technical scheme is, (the plate face is the pressurized edge according to the force mode that is subjected to of freely-supported prefabricated concrete hollow slab, be the tension edge at the bottom of the plate), after the prefabricated concrete hollow slab tension face carried out surfacing, improve its supporting capacity by pasting bamboo clappers at the tension face of prefabricated concrete hollow slab.
Paste bamboo clappers and reinforce the method for prefabricated concrete hollow slab, may further comprise the steps:
(1) the prefabricated concrete hollow slab tension face is carried out surfacing: concrete steps are, remove the bleeding cement of prefabricated concrete hollow slab tension face, until the coarse aggregate stone is exposed, then remove the floating dust at the bottom of the prefabricated concrete hollow slab plate;
(2) stamp one deck primer at the prefabricated concrete hollow slab tension face of drying even, fullly, treat that primer is air-dry, form glue-line;
(3) paste the prefabricated concrete hollow slab tension face at a full coat steel bonding of bamboo clappers glue, and with bamboo clappers; Described bamboo clappers thickness is 3mm～6mm, and is the individual layer stickup; Bamboo clappers length equates with the span of prefabricated concrete hollow slab or than the little 0 ~ 50mm of hollowcore slab span, the bamboo clappers width is 50%～100% of prefabricated concrete hollow slab width, and its center line overlaps with the center line of prefabricated concrete hollow slab tension face;
(4) take measures to make bamboo clappers and prefabricated concrete hollow slab tension face to combine closely and be not less than 24 hours, be generally 24～120 hours.
The present invention pastes the method that bamboo clappers is reinforced prefabricated concrete hollow slab, and not only speed of application is fast, influence basin is little, and can guarantee that the bearing capacity of prefabricated concrete hollow slab satisfies follow-up instructions for use; Prefabricated concrete hollow slab after the reinforcing improves more than 50% before its bearing capacity ratio is reinforced.And the present invention adopts bamboo clappers as reinforcement material, and bamboo clappers is a kind of renewable natural fast-growing material, has good tensile strength.Adopt and paste bamboo clappers reinforcing prefabricated concrete hollow slab, can effectively reduce existing building strengthening reconstruction industry to the consumption of energy resource.
Description of drawings
Fig. 1 reinforces the vertical schematic diagram of prefabricated concrete hollow slab for pasting bamboo clappers.
Fig. 2 reinforces prefabricated concrete hollow slab at the sectional view of A-A direction for pasting bamboo clappers.
1-prefabricated concrete hollow slab among the figure, 2-bamboo clappers, 3-glue-line, 4-prefabricated concrete hollow slab compression face, 5-prefabricated concrete hollow slab tension face, 6-prestressed reinforcement.
The specific embodiment
The structure of prefabricated concrete hollow slab 1 as depicted in figs. 1 and 2, the upper board face of prefabricated concrete hollow slab 1 is the pressurized edge, namely the prefabricated concrete hollow slab compression face 4; Be the tension edge at the bottom of the lower panel, namely the prefabricated concrete hollow slab tension face 5; In the inner position near tension face of prefabricated concrete hollow slab, along prefabricated concrete hollow slab span direction distribution prestressed reinforcement 6.
(1) load that first prefabricated concrete hollow slab 1 is born unloads, then be the bottom surface to the tension face 5(of prefabricated concrete hollow slab) carry out surfacing: adopt abrasive machine to erase rendering layer and the bleeding cement of prefabricated concrete hollow slab tension face 5, until the coarse aggregate stone is exposed, then remove the floating dust of plate basal surface, dry rear stand-by;
(2) stamp one deck primer at the prefabricated concrete hollow slab tension face 5 of drying even, fullly, treat that primer is air-dry;
(3) in the sticking structure glue of 2 one full coats of bamboo clappers, and bamboo clappers pasted prefabricated concrete hollow slab tension face 5, the bamboo clappers width is 50%～100% of prefabricated concrete hollow slab width, and its center line overlaps with the center line of prefabricated concrete hollow slab tension face, structure glue is solidified and is namely formed glue-line 3, as depicted in figs. 1 and 2;
(4) take fixation that bamboo clappers 2 and prefabricated concrete hollow slab tension face 5 are compressed, bamboo clappers 2 and prefabricated concrete hollow slab tension face 5 are combined closely, time is 24～120 hours, make the structure glue-line harden to the specified intensity of current specifications regulation, the prefabricated concrete hollow slab of pasting the bamboo clappers reinforcing can continue carrying.
According to the above specific embodiment, designed and pasted the three branch load test researchs that bamboo clappers is reinforced prefabricated concrete hollow slab.Result of the test shows that the bearing capacity of pasting the prefabricated concrete hollow slab after bamboo clappers is reinforced has all improved more than 50%, and follow-up instructions for use is satisfied in simultaneously distortion.
Claims (5)
1. paste the method that bamboo clappers is reinforced prefabricated concrete hollow slab for one kind, it is characterized in that, may further comprise the steps:
(1) the prefabricated concrete hollow slab tension face is carried out surfacing;
(2) smear primer at the prefabricated concrete hollow slab tension face of drying, treat that primer is air-dry;
(3) paste the prefabricated concrete hollow slab tension face in full coat structure glue of bamboo clappers, and with bamboo clappers;
(4) take measures to make bamboo clappers and prefabricated concrete hollow slab tension face to combine closely and be not less than 24 hours, be generally 24～120 hours.
2. the method for the described stickup bamboo clappers reinforcing of claim 1 prefabricated concrete hollow slab it is characterized in that described bamboo clappers width is 50%～100% of prefabricated concrete hollow slab width, and its center line overlaps with the center line of hollowcore slab tension face.
3. the described stickup bamboo clappers of claim 1 is reinforced the method for prefabricated concrete hollow slab, it is characterized in that, described bamboo clappers is isometric or than the little 0 ~ 50mm of beam span with the span of prefabricated concrete hollow slab.
4. the method for the described stickup bamboo clappers reinforcing of claim 1 prefabricated concrete hollow slab is characterized in that the described bamboo clappers thickness of step (2) is 3mm～6mm, and is that individual layer is pasted.
5. the described stickup bamboo clappers of claim 1 is reinforced the method for prefabricated concrete hollow slab, it is characterized in that, the surfacing of the described prefabricated concrete hollow slab tension face of step (1), step comprises: the bleeding cement of removing the prefabricated concrete hollow slab tension face, until the coarse aggregate stone is exposed, then remove the floating dust at the bottom of the prefabricated concrete hollow slab plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105710525A CN103015741A (en) | 2012-12-15 | 2012-12-15 | Method for reinforcing prestressed concrete core slabs by sticking bamboo boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105710525A CN103015741A (en) | 2012-12-15 | 2012-12-15 | Method for reinforcing prestressed concrete core slabs by sticking bamboo boards |
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| CN103015741A true CN103015741A (en) | 2013-04-03 |
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| CN2012105710525A Pending CN103015741A (en) | 2012-12-15 | 2012-12-15 | Method for reinforcing prestressed concrete core slabs by sticking bamboo boards |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953205A (en) * | 2014-05-15 | 2014-07-30 | 福州大学 | Bamboo earthquake-proof reinforcing structure of existing raw soil wall and method thereof |
| CN105888280A (en) * | 2016-04-20 | 2016-08-24 | 上海市建筑科学研究院 | Method for reinforcing brickwork wall by sticking bamboo mat |
| CN105971302A (en) * | 2016-06-13 | 2016-09-28 | 南京工业大学 | Prestressed concrete hollow floorslab reinforced structure and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5505030A (en) * | 1994-03-14 | 1996-04-09 | Hardcore Composites, Ltd. | Composite reinforced structures |
| CN101956464A (en) * | 2010-09-10 | 2011-01-26 | 上海市建筑科学研究院(集团)有限公司 | Method for strengthening wood beam |
| CN102061812A (en) * | 2010-12-02 | 2011-05-18 | 上海市建筑科学研究院(集团)有限公司 | Method for reinforcing wood beam by adhering steel plate |
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2012
- 2012-12-15 CN CN2012105710525A patent/CN103015741A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505030A (en) * | 1994-03-14 | 1996-04-09 | Hardcore Composites, Ltd. | Composite reinforced structures |
| CN101956464A (en) * | 2010-09-10 | 2011-01-26 | 上海市建筑科学研究院(集团)有限公司 | Method for strengthening wood beam |
| CN102061812A (en) * | 2010-12-02 | 2011-05-18 | 上海市建筑科学研究院(集团)有限公司 | Method for reinforcing wood beam by adhering steel plate |
Non-Patent Citations (1)
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| 朱雷等: "粘贴竹片加固混凝土梁的试验研究", 《结构工程师》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953205A (en) * | 2014-05-15 | 2014-07-30 | 福州大学 | Bamboo earthquake-proof reinforcing structure of existing raw soil wall and method thereof |
| CN103953205B (en) * | 2014-05-15 | 2016-06-01 | 福州大学 | A kind of existing immature soil wall bamboo wood seismic reinforcing structure and method thereof |
| CN105888280A (en) * | 2016-04-20 | 2016-08-24 | 上海市建筑科学研究院 | Method for reinforcing brickwork wall by sticking bamboo mat |
| CN105971302A (en) * | 2016-06-13 | 2016-09-28 | 南京工业大学 | Prestressed concrete hollow floorslab reinforced structure and construction method thereof |
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Address after: 200032 Shanghai city Xuhui District Wanping Road No. 75 Applicant after: Shanghai Research Institute of Building Sciences (Group) Co., Ltd. Applicant after: Science and Technology Development Company of SRIBS Address before: 200032 Shanghai city Xuhui District Wanping Road No. 75 Applicant before: Shanghai Research Institute of Building Sciences (Group) Co., Ltd. Applicant before: Sci-Tech Development Corp., Shanghai City Inst. of Building Science |
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Inventor after: Xu Qingfeng Inventor after: Li Xiangmin Inventor after: Jiang Lixue Inventor after: Tang Yang Inventor after: Gong Chuncheng Inventor before: Xu Qingfeng Inventor before: Li Xiangmin Inventor before: Jiang Lixue Inventor before: Gong Chuncheng |
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Free format text: CORRECT: INVENTOR; FROM: XU QINGFENG LI XIANGMIN JIANG LIXUE GONG CHUNCHENG TO: XU QINGFENG LI XIANGMIN JIANG LIXUE TANG YANG GONG CHUNCHENG |
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Application publication date: 20130403 |