CN104963293B - Prefabricated subsection beam lay-by is put more energy into and is supportted bellows slurry anchor Bar Anchorage method - Google Patents
Prefabricated subsection beam lay-by is put more energy into and is supportted bellows slurry anchor Bar Anchorage method Download PDFInfo
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- CN104963293B CN104963293B CN201510433090.8A CN201510433090A CN104963293B CN 104963293 B CN104963293 B CN 104963293B CN 201510433090 A CN201510433090 A CN 201510433090A CN 104963293 B CN104963293 B CN 104963293B
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- bellows
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- anchor bar
- lay
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002002 slurry Substances 0.000 title claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 14
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 235000013336 milk Nutrition 0.000 claims abstract description 3
- 239000008267 milk Substances 0.000 claims abstract description 3
- 210000004080 milk Anatomy 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000009408 flooring Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 2
- 238000009415 formwork Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 abstract description 9
- 238000009417 prefabrication Methods 0.000 abstract description 3
- 239000011440 grout Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a kind of prefabricated subsection beam lay-by support bellows slurry anchor Bar Anchorage method of putting more energy into, pre-buried bellows in the prefabricated process of beam sections, inserts anchor bar in bellows after the beam sections demoulding, the anchoring after-pouring that the is in the milk support of putting more energy into. The present invention is applied to Bar Anchorage method in bridge prefabrication engineering special construction, without changing original production technology and template, in continuous flow procedure, only need pre-buried bellows, when later stage is put more energy into support construction, technique is simple, use nothing to shrink high strength grout anchoring property reliable, under the prerequisite that ensures construction quality, accelerated to greatest extent construction speed.
Description
Technical field
The present invention relates to reinforced concrete prefabricated structure reinforcing bars anchorage technology field, relate in particular to a kind of prefabricated subsection beam lay-by support bellows slurry anchor Bar Anchorage method of putting more energy into.
Background technology
The application of precast concrete segment beam technology in science of bridge building is very extensive, and it is ripe that short-term and long collimation method prefabricated subsection beam process are also tending towards. The arm support structure of putting more energy into is chosen in the setting of beam sections lay-by, makes beam sections in Urban Bridge engineering, have the selection of more planning space and structural design. The support of putting more energy into roughly has 3 kinds of modes with the anchor connection of beam sections: embedded sleeve barrel is connected anchoring; Steel, mixed combination anchor and bar planting anchoring. But these anchorage styles cannot meet the continuous production of beam sections when element precast in the support of putting more energy into, at the bottom of the prefabricated construction feasibility of privileged sites, large to the loss of template, quality control difficulty is very big. Pre-buried oblique sleeve location difficulty and angle can not be adjusted; Steel, mixed combination anchor require high and interface anchoring difficulty to steel, welding and corrosion-resistant; After bar planting anchoring boring difficulty and reinforcing bar insert, the short time cannot adjust to the right place in colligation.
Summary of the invention
Object of the present invention is exactly a kind of method that bellows entoplasm anchor Bar Anchorage is provided for the construction of privileged sites in bridge prefabrication engineering. This technology has in the lay-by prefabricated anchoring of the support application of putting more energy into that constructing operation is simple, anchoring property reliable, can ensure the advantages such as prefabricated continuous production without repacking model.
Object of the present invention can realize by following scheme: a kind of prefabricated subsection beam lay-by is put more energy into and supportted bellows slurry anchor Bar Anchorage method, and its concrete technology step is as follows:
In step 1, beam sections reinforcing bar binding process, at every put more energy into the support pre-buried bellows in anchor bar position and grouting escape pipe. Bellows length should meet design anchorage length of steel bar, and bellows diameter should meet the space requirement of anchor bar slurry anchor, and pre-buried grouting escape pipe need support the use with bellows, and bellows utilizes network for location location, and shutoff is carried out at bellows two ends, prevents into slurry;
Step 2, beam sections bale handle, to putting more energy into after support construction area, cut web outside corrugated pipe orifice concrete, and clear up bellows inwall;
Step 3, the support anchor bar of putting more energy into penetrate in bellows, after arrival design attitude, shown in colligation drawing, put more energy into support stirrup and lay-by floorings reinforcing bar;
Step 4, the support and after the whole colligations of lay-by floorings reinforcing bar fixedly complete of putting more energy into, carry out shutoff by the bellows mouth of pipe that penetrates anchor bar, in shutoff process, pulp-inlet pipe is installed, and pulp-inlet pipe need be installed firmly seamless;
Step 5, press design mixture proportion stir grouting material, grouting material stir carry out in strict accordance with arrangement and method for construction, fluidity need meet design requirement;
Step 6, utilize pneumatic mortar machine to being in the milk in bellows, pneumatic mortar machine pressure is controlled in designing requirement, and slurry fills after pipeline and holds and press 10s, confirms pulp concentration and enters to starch concentration when consistent, seals pressurize;
Step 7, slurry reach put more energy into after design strength support and lay-by floorings formwork erection, build.
The beneficial effect that adopts technique scheme to produce is: the present invention is applied to Bar Anchorage method in bridge prefabrication engineering special construction, without changing original production technology and template, in continuous flow procedure, only need pre-buried bellows, when later stage is put more energy into support construction, technique is simple, use nothing to shrink high strength grout anchoring property reliable, under the prerequisite that ensures construction quality, accelerated to greatest extent construction speed.
Claims (1)
1.A kind ofPrefabricated subsection beam lay-by is put more energy into and is supportted bellows slurry anchor Bar Anchorage method, and its concrete technology step is as follows:
In step 1, beam sections reinforcing bar binding process, at every put more energy into the support pre-buried bellows in anchor bar position and grouting escape pipe, bellows length should meet design anchorage length of steel bar, bellows diameter should meet the space requirement of anchor bar slurry anchor, pre-buried grouting escape pipe need support the use with bellows, bellows utilizes network for location location, and shutoff is carried out at bellows two ends, prevents into slurry;
Step 2, beam sections bale handle, to putting more energy into after support construction area, cut web outside corrugated pipe orifice concrete, and clear up bellows inwall;
Step 3, the support anchor bar of putting more energy into penetrate in bellows, after arrival design attitude, shown in colligation drawing, put more energy into support stirrup and lay-by floorings reinforcing bar;
Step 4, the support and after the whole colligations of lay-by floorings reinforcing bar fixedly complete of putting more energy into, carry out shutoff by the bellows mouth of pipe that penetrates anchor bar, in shutoff process, pulp-inlet pipe is installed, and pulp-inlet pipe need be installed firmly seamless;
Step 5, press design mixture proportion stir grouting material, grouting material stir carry out in strict accordance with arrangement and method for construction, fluidity need meet design requirement;
Step 6, utilize pneumatic mortar machine to being in the milk in bellows, pneumatic mortar machine pressure is controlled in designing requirement, and slurry fills after pipeline and holds and press 10s, confirms pulp concentration and enters to starch concentration when consistent, seals pressurize;
Step 7, slurry reach put more energy into after design strength support and lay-by floorings formwork erection, build.
Priority Applications (1)
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CN201510433090.8A CN104963293B (en) | 2015-07-22 | 2015-07-22 | Prefabricated subsection beam lay-by is put more energy into and is supportted bellows slurry anchor Bar Anchorage method |
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CN201510433090.8A CN104963293B (en) | 2015-07-22 | 2015-07-22 | Prefabricated subsection beam lay-by is put more energy into and is supportted bellows slurry anchor Bar Anchorage method |
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CN104963293A CN104963293A (en) | 2015-10-07 |
CN104963293B true CN104963293B (en) | 2016-05-18 |
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CN108571121B (en) * | 2018-05-16 | 2020-07-17 | 广西大学 | Method for determining design value of anchoring length of deformed reinforcing steel bar in concrete |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006125011A (en) * | 2004-10-28 | 2006-05-18 | Railway Technical Res Inst | Steel pipe column joint element and construction method of viaduct beam using it |
KR100782523B1 (en) * | 2006-09-12 | 2007-12-06 | 현대건설주식회사 | Prestressed Concrete Box Girder Bridge with Struts |
CN201132929Y (en) * | 2007-11-26 | 2008-10-15 | 中铁大桥勘测设计院有限公司 | Prestressed concrete continuous beam of box section of large- cantilever arc flange plate |
CN102787560A (en) * | 2012-08-24 | 2012-11-21 | 杭州市市政工程集团有限公司 | Integrated construction method of support of large cantilevered capping beam and vertical column |
CN103276662A (en) * | 2013-05-13 | 2013-09-04 | 中交第二航务工程局有限公司 | Large-cantilever steel web spinal box beam segment and construction technology |
CN103741582A (en) * | 2013-12-30 | 2014-04-23 | 郑州大学 | Corrugated steel web polycarbonate (PC) combination box beam and construction method thereof |
-
2015
- 2015-07-22 CN CN201510433090.8A patent/CN104963293B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006125011A (en) * | 2004-10-28 | 2006-05-18 | Railway Technical Res Inst | Steel pipe column joint element and construction method of viaduct beam using it |
KR100782523B1 (en) * | 2006-09-12 | 2007-12-06 | 현대건설주식회사 | Prestressed Concrete Box Girder Bridge with Struts |
CN201132929Y (en) * | 2007-11-26 | 2008-10-15 | 中铁大桥勘测设计院有限公司 | Prestressed concrete continuous beam of box section of large- cantilever arc flange plate |
CN102787560A (en) * | 2012-08-24 | 2012-11-21 | 杭州市市政工程集团有限公司 | Integrated construction method of support of large cantilevered capping beam and vertical column |
CN103276662A (en) * | 2013-05-13 | 2013-09-04 | 中交第二航务工程局有限公司 | Large-cantilever steel web spinal box beam segment and construction technology |
CN103741582A (en) * | 2013-12-30 | 2014-04-23 | 郑州大学 | Corrugated steel web polycarbonate (PC) combination box beam and construction method thereof |
Non-Patent Citations (1)
Title |
---|
体外预应力梁在上海长江大桥施工中的应用;许树壮、黄虹;《中国市政工程》;20071130(第S2期);第79-81页 * |
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