CN101906753B - Method for controlling concrete compactness at T-shaped beam deformation section of reinforced concrete prestress - Google Patents
Method for controlling concrete compactness at T-shaped beam deformation section of reinforced concrete prestress Download PDFInfo
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- CN101906753B CN101906753B CN2010102541704A CN201010254170A CN101906753B CN 101906753 B CN101906753 B CN 101906753B CN 2010102541704 A CN2010102541704 A CN 2010102541704A CN 201010254170 A CN201010254170 A CN 201010254170A CN 101906753 B CN101906753 B CN 101906753B
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Abstract
The present invention discloses a method for controlling concrete compactness at a T-shaped beam deformation section of reinforced concrete prestress, which comprises the following steps: horizontally and evenly distributing a plurality of plate vibrators on a template corresponding to a T-shaped beam horseshoe section, horizontally and evenly distributing a plurality of overflows on a template corresponding to the lower bar zone of a T-shaped beam deformation section, and arranging an overflow between the adjacent two plate vibrators; injecting the concrete into the lower bar zone of the T-shaped beam deformation section, and observing whether the concrete flows out of the overflows, if not, continuing concrete vibrating until the concrete flows out of the overflows; closing the overflows if the concrete flows out of the overflows; and injecting the concrete into the lower bar zone of the T-shaped beam deformation section, starting the plate vibrators, carrying out concrete vibrating with a vibrating tamper, and judging concrete-vibrating compactness in accordance with the situation whether the concrete flows out of the overflows, if not, proving that the concrete is uncompacted, thus needing to continue concrete-vibrating, and if yes, proving that the concrete is compacted. The method is more scientific and more accurate, and completely eradicates occurrence of cavities in the lower bar zone of the T-shaped beam deformation section, thereby greatly improving pouring quality of the T-shaped beam.
Description
Technical field
The present invention relates to a kind of concrete packing control method, relate in particular to a kind of reinforced concrete Prestressed T type beam deformation section concrete packing control method.
Background technology
The industry personage who is engaged in the road and bridge professional construction knows, one of difficult point of prefabricated reinforced concrete Prestressed T type beam is exactly the concrete packing of how controlling after concrete is poured into a mould, with the integrated poured concrete of a Pin beam is example, mainly occurs on the water chestnut and gusset boundary line segment of T type beam and produce the uncompacted key area of concrete.
In the prior art, the cross section of T type beam as shown in Figure 1, the cross section of T type beam is made up of muscle district 4a and the 5a of back portion on muscle district 2a, T type beam gusset 3a, the T type beam deformation section under T type beam water chestnut section 1a, the T type beam deformation section from bottom to top.The uniform row's plate vibrator of level on the corresponding template in T type beam water chestnut section 1a place, during the concrete cast is to begin from a direction blanking from T type beam water chestnut section 1a, opening plate vibrator carries out packing and does not have rod and vibrate, because of the concrete cross section abundant, be easy to the vibratory compaction of concrete, after finishing, this procedure promptly begins muscle district 2a concrete cast blanking under the T type beam deformation section, muscle district 2a under the T type beam deformation section is owing to be in T type beam gusset 3a and T type beam water chestnut section 1a junctional area, thickness is attenuation gradually, reinforcing bar is intensive, and bellows crosses in a large number, so just cause concrete blanking difficulty, power attached to the vibration of the plate vibrator on the template has been absorbed most of vibration force by the closely knit T type beam water chestnut section of concrete, at this moment beat the vibration compacting degree that rod is controlled 2a concrete in muscle district under the T type beam deformation section by rule of thumb by the vibrating head operating personnel entirely, just very easily cause muscle district 2a concrete leakiness under the T type beam deformation section if human negligence takes place, easily form the cavity, even cause T type beam to scrap.Therefore, this only by rule of thumb the vibration compacting degree of the wayward concrete of method, and science not very.
Summary of the invention
At the prior art above shortcomings, the invention provides muscle district concrete pouring compactness under a kind of T of control type beam deformation section, and control is convenient, improve the concrete pouring compactness in muscle district under the T type beam deformation section greatly, and prevent to produce the reinforced concrete Prestressed T type beam deformation section concrete packing control method in cavity.
Reinforced concrete Prestressed T type beam deformation section concrete packing control method provided by the invention, the uniform a plurality of plate vibrators of level on the template of T type beam water chestnut section corresponding position, the uniform a plurality of spout holes of level on the template of corresponding position, muscle district under the T type beam deformation section, on the template of T type beam water chestnut section corresponding position and also be provided with spout hole between adjacent two plate vibrators, corresponding flooding hole, muscle district and T type beam water chestnut section corresponding flooding hole are and shift to install under the described T type beam deformation section; Behind the muscle district, open plate vibrator, and vibrate with vibrator under the concrete injection T type beam deformation section, whether the observation spout hole has the concrete slurry to flow out, and as if there being the concrete slurry to flow out, then continuing to vibrate and flows out until the concrete slurry; If the concrete slurry flows out, then close spout hole with switch valve.
Further, the level interval between level interval between the corresponding flooding hole, muscle district and the T type beam water chestnut section corresponding flooding hole is 150～250mm under the described T type beam deformation section; Under the described T type beam deformation section between corresponding flooding hole, muscle district and the T type beam water chestnut section corresponding flooding hole at a distance of 250～350mm.
Further, described switch valve is formed by being arranged on the template and near baffle plate and drift ping plate that spout hole is provided with, forms a slot between described baffle plate and the template, and the drift ping plate is sealing spout hole in the time of in the drift ping plate inserts slot.
Further, described switch valve is formed by being arranged on the template and near gripper shoe and taper bolt that spout hole is provided with, and described gripper shoe is provided with corresponding screwed hole with spout hole, and taper bolt screws in the screwed hole, and the front end of taper bolt is corresponding with spout hole.
The present invention adopts the uniform a plurality of spout holes of level on the template of corresponding position, muscle district under the T type beam deformation section, and between adjacent two plate vibrators, also be provided with spout hole, compared with prior art, reinforced concrete Prestressed T type beam deformation section concrete packing control method of the present invention has following advantage:
Whether 1, concrete injects under the T type beam deformation section behind the muscle district, opens plate vibrator, and vibrates with vibrator, have the concrete slurry to flow out the vibration compacting degree of judging concrete according to spout hole, if there is the concrete slurry to flow out the concrete leakiness is not described then, need continue to vibrate; If the concrete slurry flows out, illustrate that then concrete is closely knit.Compare with the vibration compacting degree of only controlling concrete by rule of thumb, the vibration compacting degree that whether has concrete slurry to flow out to judge concrete by the observation spout hole is science more, and more accurate; Stop muscle district generation cavity under T type beam deformation section fully, improved the casting quality of T type beam greatly.
2, the present invention has not only controlled under the T type beam deformation section outside the muscle district concrete packing, has also eliminated the bubble on concrete surface, improves the surface smoothness of T type beam.
3, the present invention also can be derived from the general structure concrete packing control of industry and civil buildings the particularly control of thin-walled shear wall concrete packing by the method that whether has the concrete slurry to flow out the vibration compacting degree of judging concrete according to spout hole.
Description of drawings
Fig. 1 is the structural representation of T type beam cross section;
Fig. 2 is a structural representation of arranging plate vibrator and spout hole on the template;
Fig. 3 is the structural representation of first kind of embodiment of switch valve;
Fig. 4 is the structural representation of second kind of embodiment of switch valve.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in further detail.
Fig. 2 is a structural representation of arranging plate vibrator and spout hole on the template, as shown in the figure.Reinforced concrete Prestressed T type beam deformation section concrete packing control method, 11 plate vibrators only draw among the uniform a plurality of plate vibrator 3(Fig. 2 of level on the template 2 of T type beam water chestnut section 1 corresponding position), the uniform a plurality of spout holes 5 of level on the template 2 of 4 corresponding positions, muscle district under the T type beam deformation section, on the template 2 of T type beam water chestnut section 1 corresponding position and between adjacent two plate vibrators 3, also be provided with spout hole 5,21 spout holes 5 that draw altogether among Fig. 2,4 corresponding flooding holes 5, muscle district are with T type beam water chestnut section 1 corresponding flooding hole 5 and shift to install under the described T type beam deformation section.Whether concrete injects under the T type beam deformation section behind the muscle district 4, opens plate vibrator 3, and vibrates with vibrator, have the concrete slurry to flow out the vibration compacting degree of judging concrete according to spout hole 5, if there is the concrete slurry to flow out the concrete leakiness is not described then, need continue to vibrate; If the concrete slurry flows out, illustrate that then concrete is closely knit, then close spout hole 5 with switch valve.This vibration compacting degree that whether has concrete slurry to flow out to judge concrete by the observation spout hole is science more, and more accurate; Stop muscle district generation cavity under T type beam deformation section fully, improved the casting quality of T type beam greatly.
In the present embodiment, the level interval between level interval under the T type beam deformation section between the 4 corresponding flooding holes 5, muscle district and the T type beam water chestnut section 1 corresponding flooding hole 5 is 150～250mm, and for example level interval is 150,170,190,220 or 250 all can.Under the T type beam deformation section between 4 corresponding flooding holes 5, muscle district and the T type beam water chestnut section 1 corresponding flooding hole 5 at a distance of 250～350mm, for example spacing is 250,270,290,320 or 350 all can.Above-mentioned level interval and vertical spacing can guarantee that all 4 cast of muscle district are closely knit under the T type beam deformation section, do not produce the cavity.Adopt the reliability of the method control pour concrete packing quality to depend on the distributing position and the distribution density of spout hole 5, therefore, select as far as possible easily leakiness to take place and produce on the weak district of the concrete cast in cavity and vibration and the position, blind area and deploy to ensure effective monitoring and control of illegal activities.
Switch valve can adopt structure as shown in Figure 3, and switch valve is formed by being arranged on the template 2 and near the baffle plate 6 and the drift ping plate 7 of spout hole 5, forms a slot 8 between described baffle plate 6 and the template 2, and drift ping plate 7 envelopes spout hole 5 when drift ping plate 7 inserts in the slot 8.Behind the muscle district 4, if the concrete slurry flows out, illustrate that then concrete is closely knit under the concrete injection T type beam deformation section, drift ping plate 7 is inserted in the slots 8 that then drift ping plate 7 spout hole 5 envelopes, spout hole 5 is closed.
Switch valve also can adopt structure as shown in Figure 4, switch valve is formed by being arranged on the template and near the gripper shoe 10 and the taper bolt 9 of spout hole 5, described gripper shoe 10 is provided with and spout hole 5 corresponding screwed holes, taper bolt 9 screws in the screwed hole, and the front end of taper bolt 9 is corresponding with spout hole 5.Behind muscle district 4 under the concrete injection T type beam deformation section, taper bolt 9 can be screwed out in screwed hole, open spout hole 5, in case concrete slurry is emerged from spout hole 5, with taper bolt 9 precession in the screwed hole, the front end of taper bolt 9 heads on spout hole 5 again, spout hole 5 envelopes, and spout hole 5 is closed.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. reinforced concrete Prestressed T type beam deformation section concrete packing control method, template (2) in T type beam water chestnut section (1) corresponding position goes up the uniform a plurality of plate vibrators of level (3), it is characterized in that: the template (2) of corresponding position, muscle district (4) goes up the uniform a plurality of spout holes of level (5) under T type beam deformation section, the template (2) of T type beam water chestnut section (1) corresponding position goes up and also be provided with spout hole (5) between adjacent two plate vibrator (3), and muscle district (4) corresponding flooding hole (5) are with T type beam water chestnut section (1) corresponding flooding hole (5) and shift to install under the described T type beam deformation section;
Behind the muscle district (4), open plate vibrator (3), and vibrate with vibrator under the concrete injection T type beam deformation section, whether observation spout hole (5) has the concrete slurry to flow out, and as if there being the concrete slurry to flow out, then continuing to vibrate and flows out until the concrete slurry; If the concrete slurry flows out, then close spout hole (5) with switch valve.
2. reinforced concrete Prestressed T type beam deformation section concrete packing control method according to claim 1, it is characterized in that: level interval under the described T type beam deformation section between muscle district (4) corresponding flooding hole (5) and the level interval between T type beam water chestnut section (1) the corresponding flooding hole (5) are 150～250mm; Under the described T type beam deformation section between muscle district (4) corresponding flooding hole (5) and T type beam water chestnut section (1) the corresponding flooding hole (5) at a distance of 250～350mm.
3. reinforced concrete Prestressed T type beam deformation section concrete packing control method according to claim 1 and 2, it is characterized in that: template (2) goes up described switch valve and the baffle plate (6) and the drift ping plate (7) of close spout hole (5) are formed by being arranged on, form a slot (8) between described baffle plate (6) and the template (2), drift ping plate (7) is sealing spout hole (5) in the time of in drift ping plate (7) inserts slot (8).
4. reinforced concrete Prestressed T type beam deformation section concrete packing control method according to claim 1 and 2, it is characterized in that: described switch valve is formed by being arranged on the template and near the gripper shoe (10) and the taper bolt (9) of spout hole (5), described gripper shoe (10) is provided with and the corresponding screwed hole of spout hole (5), taper bolt (9) screws in the screwed hole, and the front end of taper bolt (9) is corresponding with spout hole (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102541704A CN101906753B (en) | 2010-08-16 | 2010-08-16 | Method for controlling concrete compactness at T-shaped beam deformation section of reinforced concrete prestress |
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| CN2010102541704A CN101906753B (en) | 2010-08-16 | 2010-08-16 | Method for controlling concrete compactness at T-shaped beam deformation section of reinforced concrete prestress |
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| CN101906753B true CN101906753B (en) | 2011-12-14 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2484320A1 (en) * | 1980-06-11 | 1981-12-18 | Applic Ceramiques Sa Et | Concrete beam moulding machine - has edge smoothing assembly on each side, each with resiliently supported straight and sloping blade |
| CN1100025A (en) * | 1993-09-09 | 1995-03-15 | 任华国 | Method for production of side mould of prefabricated hollow floor |
| JP2005076305A (en) * | 2003-09-01 | 2005-03-24 | Taisei Corp | Segment and method of manufacturing segment |
| CN101219559A (en) * | 2007-12-28 | 2008-07-16 | 中冶建工有限公司 | Method for casting prestressed concrete T beam without shutter vibrator |
| CN101403212A (en) * | 2008-11-13 | 2009-04-08 | 中铁二局股份有限公司 | Construction method for pretensioned prestressing concrete simply supported T-beam |
| CN101570960A (en) * | 2009-05-08 | 2009-11-04 | 北京市市政专业设计院有限责任公司 | Fastening method of T-shaped beam bridge |
| CN101649603A (en) * | 2008-08-15 | 2010-02-17 | 龙建路桥股份有限公司 | 50-meter T-shaped beam prefabricated assembling process |
| CN101748681A (en) * | 2009-12-22 | 2010-06-23 | 浙江省大成建设集团有限公司 | Pretensioning method construction technology of 50m broken line reinforced concrete T-shaped beam |
-
2010
- 2010-08-16 CN CN2010102541704A patent/CN101906753B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2484320A1 (en) * | 1980-06-11 | 1981-12-18 | Applic Ceramiques Sa Et | Concrete beam moulding machine - has edge smoothing assembly on each side, each with resiliently supported straight and sloping blade |
| CN1100025A (en) * | 1993-09-09 | 1995-03-15 | 任华国 | Method for production of side mould of prefabricated hollow floor |
| JP2005076305A (en) * | 2003-09-01 | 2005-03-24 | Taisei Corp | Segment and method of manufacturing segment |
| CN101219559A (en) * | 2007-12-28 | 2008-07-16 | 中冶建工有限公司 | Method for casting prestressed concrete T beam without shutter vibrator |
| CN101649603A (en) * | 2008-08-15 | 2010-02-17 | 龙建路桥股份有限公司 | 50-meter T-shaped beam prefabricated assembling process |
| CN101403212A (en) * | 2008-11-13 | 2009-04-08 | 中铁二局股份有限公司 | Construction method for pretensioned prestressing concrete simply supported T-beam |
| CN101570960A (en) * | 2009-05-08 | 2009-11-04 | 北京市市政专业设计院有限责任公司 | Fastening method of T-shaped beam bridge |
| CN101748681A (en) * | 2009-12-22 | 2010-06-23 | 浙江省大成建设集团有限公司 | Pretensioning method construction technology of 50m broken line reinforced concrete T-shaped beam |
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