CN101545246B - Method for constructing support grouting material in winter - Google Patents
Method for constructing support grouting material in winter Download PDFInfo
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- CN101545246B CN101545246B CN2009100833832A CN200910083383A CN101545246B CN 101545246 B CN101545246 B CN 101545246B CN 2009100833832 A CN2009100833832 A CN 2009100833832A CN 200910083383 A CN200910083383 A CN 200910083383A CN 101545246 B CN101545246 B CN 101545246B
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Abstract
The invention relates to a method for constructing support grouting material in winter, which comprises the following steps: performing the non-contact uniform heating treatment of the surfaces of parts to be combined with a heat source to raise the temperature of the parts to be combined to 5 to 40 DEG C during grouting construction; when heating the parts to be combined, mixing a liquid grouting material with hot water to ensure the discharge temperature of the grouting material reaches 5 to 30 DEG C; filling the grouting material from the central part of a bottom plate of the support to the periphery of the bottom plate till the parts to be combined are fully filled with the grouting material; and instantly heating the parts to be combined for maintenance for 24 hours, keeping the temperature of the core part of slurry (grouting material) above 5 DEG C constantly within 24 hours, and finally, removing the heating maintenance, and performing the normal maintenance of the parts to be combined. The methods overcomes the drawbacks of the prior art, simplifies operation, greatly improves construction efficiency, and has wide application prospects in high-speed railways under larger-scale construction.
Description
Technical field
The present invention relates to a kind of method for constructing support grouting material in winter, be applicable to the winter construction method of concrete box girder erection support groutings such as railroad bridge, Light Railway Bridge, highway bridge and urban viaduct.
Background technology
Along with The development in society and economy, concrete box girders such as railroad bridge, Light Railway Bridge, highway bridge and urban viaduct set up increasing.As everyone knows, this wherein needs to lift a large amount of prefabricated case beams, and behind the case beam hoisted in position, need the connecting portion of case beam and bridge pad be in the milk, supporting and the fixed case beam, and the stablizing of guard box beam.
Figure 1 shows that high-speed railway bridge case beam scheme of installation of the prior art, Fig. 2 is the structure and grouting generalized section of bridge pad among Fig. 1, and Fig. 3 is the schematic top plan view after the support pinner end face mounting template among Fig. 1.
As shown in the figure, between the support pinner 3 of concrete pier base 4 and concrete-bridge case beam 1, be provided with bearing 2.During construction, at first bearing 2 is fixed on the bottom of concrete-bridge case beam 1, then concrete-bridge case beam 1 is lifted on the support pinner 3 of concrete pier base 4, make described bearing 2 between concrete-bridge case beam 1 and support pinner 3.Support pinner 3 and be reserved with anchor hole 10 on four jiaos of places of end face and concrete pier base 4, the base plate of bearing 2 (lower steel plate) is provided with the anchor bolt 5 that inserts anchor hole, and anchor bolt 5 peripheries are provided with the sleeve (not shown).After bridge was in place, the anchor bolt 5 that is provided with on the base plate of bearing 2 just inserted in the sleeve in the anchor hole 10 that connects described support pinner 3 and concrete pier base 4.By the cast mortar anchor bolt and sleeve and support pinner 3, concrete pier base 4 are consolidated, bridge box and beam 1, bearing 2, concrete pier base 4 just all link together at last.
As shown in Figure 2, need grouting be installed with template 6 in the periphery that supports pinner 3 during cast, by anchor bolt 5 base plate of bearing 2 be fixed on and support pinner 3 end faces.Mortar is injected by mortar hopper 8, pours into base-plate and supports in the space between the pinner by stream guiding tube 7, till observing grouting agent from the template 6 and the base plate peripheral clearance of bearing 2 and all filling.
Just can unclamp the case beam after waiting the perfusion mortar sclerosis owing to suspension bridge is confidential and reaching 20MPa, the lifting of following a slice beam, thereby be the lifting speed of guard box beam, the bearing perfusion mortar need have higher early strength (2h reaches 20MPa) and good placeability energy.But, the construction environment temperature of severe cold area is in low, subzero temperature, the grouting agent of new cast is dissipated heat in a short period of time, the hydration heat of binder paste temperature is difficult to guarantee reach suitable early strength after the slurry sclerosis, the laying efficient of bridge will be reduced, especially severe be, endure cold the in early days harm of later strength loss of slurry also can appear, for engineering is brought hidden danger of quality, in order to address this problem, the method that brooder guarantees construction temperature is taken in general employing for a long time, but construction cost is big, and efficient is low.And adopt in work progress region of interest is carried out the contact heating, not only operation is complicated, and is difficult to region of interest is evenly heated.
For this reason, the inventor invents out a kind of winter construction method that is applicable to concrete box girder erection support groutings such as railroad bridge, Light Railway Bridge, highway bridge and urban viaduct through years of researches, can effectively overcome above-mentioned defective.
Summary of the invention
The purpose of this invention is to provide a kind of method for constructing support grouting material in winter, especially a kind of by non-contact uniform heating treatment, assurance grouting agent out-of-machine temperature and heating curing technology, can simplify the operation, accelerate efficiency of construction, guarantee the method for constructing support grouting material in winter of construction quality.
For this reason, method for constructing support grouting material in winter of the present invention may further comprise the steps: treat the binding site parts surface with thermal source and carry out non-contact uniform heating treatment, the described temperature of binding site for the treatment of reaches 5 ℃～40 ℃ when grouting construction; When binding site is treated in heating,, make the grouting agent out-of-machine temperature reach 5 ℃～30 ℃ with the grouting agent that the hot water system of mixing can flow; To treating that binding site injects grouting agent, until grouting agent all fill treat binding site till; Heating curing 24 hours immediately then continues more than 5 ℃ the grouting agent core temperature that pours in 24 hours; Remove heating curing at last, the described binding site for the treatment of is carried out normal maintenance.
Wherein, described thermal source is iodine-tungsten lamp or unit heater.The described binding site for the treatment of comprises: be arranged on the base-plate lower surface and support pinner upper surface of supporting pinner top, be fixed on anchor bolt and the anchor hole that is arranged on support pinner and the concrete pier base on the bearing, and the template and support pinner that are arranged on described support pinner periphery.
Preferably, described base-plate, anchor hole, anchor bolt, template and the temperature when supporting the pinner grouting construction are 15 ℃～40 ℃.
Aforesaid method for constructing support grouting material in winter, wherein, when treating that binding site injects grouting agent, be that grouting is inserted in the described support pinner with stream guiding tube, and in the centre that extends laterally to described support pinner and bearing, then to around inject grouting agent.
Aforesaid method for constructing support grouting material in winter, wherein, described grouting agent out-of-machine temperature is 10 ℃～20 ℃.
Aforesaid method for constructing support grouting material in winter, wherein, described heating curing comprises, wraps up described template and bearing with electric blanket, wraps up with heat preservation member at the electric blanket skin.
Aforesaid method for constructing support grouting material in winter, wherein, the described grouting agent core temperature that pours into is 5 ℃～35 ℃.
Aforesaid method for constructing support grouting material in winter, wherein, described heat preservation member is a cotton-wadded quilt.
Advantage and characteristics that the present invention compared with prior art possesses are:
The present invention is directed to cold or the severe cold area winter temperature is low, the bridge pad perfusion mortar situation faster of in work progress, dispelling the heat, hot light that employing iodine-tungsten lamp or unit heater produce or hot blast are with the base plate lower surface of contactless mode to bearing, anchor hole, anchor bolt, template and support the pinner upper surface and carry out uniform heating treatment to 5 ℃～40 ℃, avoided adopting the contact mode of heating to be difficult to problem to the region of interest homogeneous heating, can also blow out impurity in the positions such as anchor hole, adopt hot water to mix the qualified grouting agent of system degree of mobilization simultaneously, guarantee 5 ℃～30 ℃ of grouting agent out-of-machine temperatures, heating curing operation in addition, simplify the operation, thereby accelerated efficiency of construction greatly, in the high-speed railway of Large scale construction, have broad application prospects.
Description of drawings
The following drawings only is intended to the present invention done and schematically illustrates and explain, not delimit the scope of the invention.Wherein,
Fig. 1 is the high-speed railway bridge case beam scheme of installation of prior art;
Fig. 2 is the structure and grouting generalized section of bridge pad among Fig. 1;
Fig. 3 is the schematic top plan view that supports among Fig. 1 after the periphery mounting template of pinner;
Fig. 4 is a method for constructing support grouting material in winter schematic flow sheet of the present invention;
Fig. 5 is the heating curing operation schematic diagram of method for constructing support grouting material in winter of the present invention.
Description of reference numerals is as follows:
1---concrete-bridge case beam 2---bearing 3---support pinner
4---concrete pier base 5---anchor bolt 6---templates
7---stream guiding tube 8---mortar hopper
9---materials 10 such as cotton-wadded quilt and guarantor's plate---anchor hole
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast description of drawings the specific embodiment of the present invention.
Fig. 4 is a method for constructing support grouting material in winter schematic flow sheet of the present invention.As shown in Figure 4, and cooperate referring to Fig. 1,2,3, method for constructing support grouting material in winter of the present invention may further comprise the steps:
(1) parts surface for the treatment of binding site with thermal source carries out non-contact uniform heating treatment, and when carrying out grouting construction, these treat that the temperature of binding site reaches 5 ℃～40 ℃;
(2) when binding site is treated in heating, adopt the hot water system of mixing can flow, and degree of mobilization can satisfy the grouting agent of construction requirement, assurance grouting agent out-of-machine temperature reaches 5 ℃～30 ℃;
(3) to treating that binding site injects grouting agent, until grouting agent all fill treat binding site till;
(4) heating curing 24 hours immediately then should guarantee that slurry (grouting agent that pours into) core temperature continues greater than more than 5 ℃ in 24 hours;
(5) remove heating curing at last, described binding site is carried out normal maintenance.
Wherein, thermal source described in the step 1 can be iodine-tungsten lamp or unit heater, treat that for railroad bridge the binding site parts comprise: the base plate lower surface and support pinner 3 upper surfaces that are arranged on the bearing 2 that supports pinner 3 tops, be fixed on anchor bolt 5 and the anchor hole 10 that is arranged on support pinner 3 and the concrete pier base 4 on the bearing 2, and the template 6 and support pinner 3 that are arranged on described support pinner 3 peripheries.When carrying out grouting construction, preferably make the temperature of base plate lower surface, anchor hole 10, anchor bolt 5, template 6 and the support pinner 3 of described bearing 2 reach 15 ℃～40 ℃.
10 ℃～20 ℃ of grouting agent out-of-machine temperatures in the described step 2.
Fig. 5 has represented the heating curing operation schematic diagram of method for constructing support grouting material in winter of the present invention.Promptly in described step 4, with electric blanket parcel template 10 and bearing 2 and energising, again with the heat preservation member parcel, described heat preservation member for example can be cotton-wadded quilt at the electric blanket skin.The power of described electric blanket and the thickness of cotton-wadded quilt are selected according to the practice of construction environment temperature, can remain on 5 ℃～35 ℃ to guarantee the slurry core temperature in 24 hours.
Concrete construction sequence of the present invention is: concrete-bridge case beam 1 is lifted to the top of concrete pier base 4, and supporting the periphery installation grouting template 6 of pinner 3, after the bridge lifting puts in place, treat the parts of binding site by iodine-tungsten lamp or unit heater---the base plate lower surface of bearing 2, anchor hole 10, anchor bolt 5, non-contact uniform heating treatment is carried out on the surface of template 6 and support pinner 3, the surface temperature of these parts when carrying out grouting construction reaches 5 ℃～40 ℃, with the base plate lower surface with described bearing 2, anchor hole 10, anchor bolt 5, the surface temperature heating of template 6 and support pinner 3 reaches 15 ℃～40 ℃ for best.When binding site is treated in heating, adopt hot water to mix the qualified grouting agent of system degree of mobilization, and guarantee that the grouting agent out-of-machine temperature reaches 5 ℃～30 ℃, be the best with 10 ℃～20 ℃.Then, the anchor bolt 5 that is provided with on the base plate of bearing 2 after the heating is inserted in the sleeve in the anchor hole 10 that is provided with on described support pinner 3, the concrete pier base, by anchor bolt 5 base plate of bearing 2 is fixed on and supports pinner 3 end faces.Is that 10 ℃～20 ℃ grouting agent injects by mortar hopper 8 with out-of-machine temperature, when treating that bonded block injects grouting agent, to be in the milk and insert in the described support pinner 3 with stream guiding tube 7, and in the centre that extends laterally to described support pinner 3 and bearing 2, then to around inject grouting agent.Promptly, by stream guiding tube 7 with grouting agent inject the upper surface of the support pinner 3 that is provided with on the base plate lower surface of bearing 2 and the pier 4 the space, be fixed on the anchor bolt 5 on the bearing 2 with the anchor hole 10 that is arranged on support pinner 3 and the concrete pier base 4 between the space, and be arranged on the template 6 of described support pinner 3 peripheries and support in the space between the pinner 3, till observing grouting agent from the template 6 and the base plate peripheral clearance of bearing 2 and all filling.After finishing the grouting operation, immediately the grouting parts are carried out heating curing, available electric blanket parcel template 6 and bearing 2 and energising, wrap up with heat preservation member such as cotton-wadded quilts again at the electric blanket skin, wherein, the power of described electric blanket and the thickness of cotton-wadded quilt are selected according to the practice of construction environment temperature, can remain on 5 ℃～35 ℃ to guarantee the slurry core temperature in 24 hours.After finishing the heating curing operation electric blanket, cotton-wadded quilt are removed, the described binding site for the treatment of is carried out normal maintenance, will treat respectively that bonded block is combined as a whole.Thereby guarantee winter at severe cold area, also can be easy, by the cast mortar anchor bolt and sleeve and support pinner 3 are consolidated apace, bridge box and beam 1, bearing 2, concrete pier base 4 connected as a whole, improved efficiency of construction and construction quality.
The above-mentioned structure of respectively treating binding site and the position is set, and the perfusion position of grouting agent is same as the prior art.
The above only is the schematic specific embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations and the modification done under the prerequisite that does not break away from design of the present invention and principle all should belong to the scope of protection of the invention.
Claims (9)
1. a method for constructing support grouting material in winter is characterized in that, described method for constructing support grouting material in winter comprises:
Treat the binding site parts surface with thermal source and carry out non-contact uniform heating treatment, the described temperature of binding site for the treatment of reaches 5 ℃～40 ℃ when grouting construction;
When binding site is treated in heating,, make the grouting agent out-of-machine temperature reach 5 ℃～30 ℃ with the grouting agent that the hot water system of mixing can flow;
To treating that binding site injects grouting agent, until grouting agent all fill treat binding site till;
Heating curing 24 hours immediately then continues more than 5 ℃ the grouting agent core temperature that pours in 24 hours;
Remove heating curing at last, the described binding site for the treatment of is carried out normal maintenance.
2. method for constructing support grouting material in winter as claimed in claim 1 is characterized in that, described thermal source is iodine-tungsten lamp or unit heater.
3. method for constructing support grouting material in winter as claimed in claim 1, it is characterized in that, the described binding site for the treatment of comprises: be arranged on the base-plate lower surface and support pinner upper surface of supporting pinner top, be fixed on anchor bolt and the anchor hole that is arranged on support pinner and the concrete pier base on the bearing, and the template and support pinner that are arranged on described support pinner periphery.
4. method for constructing support grouting material in winter as claimed in claim 3 is characterized in that, described base-plate, anchor hole, anchor bolt, template and the temperature when supporting the pinner grouting construction are 15 ℃～40 ℃.
5. method for constructing support grouting material in winter as claimed in claim 3, it is characterized in that, when treating that binding site injects grouting agent, be that grouting is inserted in the described support pinner with stream guiding tube, and in the centre that extends laterally to described support pinner and bearing, then to around inject grouting agent.
6. method for constructing support grouting material in winter as claimed in claim 1 is characterized in that, described grouting agent out-of-machine temperature is 10 ℃～20 ℃.
7. method for constructing support grouting material in winter as claimed in claim 3 is characterized in that, described heating curing comprises, wraps up described template and bearing with electric blanket, wraps up with heat preservation member at the electric blanket skin.
8. method for constructing support grouting material in winter as claimed in claim 7 is characterized in that, the described grouting agent core temperature that pours into is 5 ℃～35 ℃.
9. method for constructing support grouting material in winter as claimed in claim 7 is characterized in that, described heat preservation member is a cotton-wadded quilt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100833832A CN101545246B (en) | 2009-05-05 | 2009-05-05 | Method for constructing support grouting material in winter |
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| CN2009100833832A CN101545246B (en) | 2009-05-05 | 2009-05-05 | Method for constructing support grouting material in winter |
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| CN101545246B true CN101545246B (en) | 2010-11-10 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108678B (en) * | 2011-01-18 | 2014-09-17 | 龙建路桥股份有限公司 | High-altitude construction complete set device and method in winter |
| CN104233960B (en) * | 2014-09-30 | 2016-02-17 | 中铁四局集团有限公司 | Workpiece for grouting of bridge continuous beam web and construction method |
| CN106592430B (en) * | 2016-11-14 | 2018-04-13 | 中建三局基础设施建设投资有限公司 | A kind of cast-in-place winter construction method of Hanging Basket cantilever |
| CN108560409A (en) * | 2018-05-31 | 2018-09-21 | 中国水利水电第四工程局有限公司 | A kind of high-speed rail bridge bearing mortar bed pours structure and irrigation method |
| CN111197286A (en) * | 2020-01-16 | 2020-05-26 | 中交一公局第八工程有限公司 | High-speed railway support mortar steam curing means |
| CN114108631B (en) * | 2021-11-26 | 2023-08-29 | 中铁十局集团青岛工程有限公司 | Vibrator for gravity grouting and gravity grouting method |
| CN114808677B (en) * | 2022-05-29 | 2023-07-21 | 临沂市政集团有限公司 | Gravity type grouting bridge support mounting process for municipal construction |
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| US5367854A (en) * | 1991-11-23 | 1994-11-29 | Kim; Sun-Ja | Methods for connection of precast concrete units |
| US5555697A (en) * | 1994-01-12 | 1996-09-17 | Kim; Sun J. | Method for connecting precast concrete units |
| KR20050082024A (en) * | 2004-02-17 | 2005-08-22 | (주)다산컨설턴트 | Heating panel of bridge for winter work |
| CN1944798A (en) * | 2006-11-13 | 2007-04-11 | 北京建工华创工程技术有限公司 | Low temperature construction method for bridge support grouting |
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2009
- 2009-05-05 CN CN2009100833832A patent/CN101545246B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5367854A (en) * | 1991-11-23 | 1994-11-29 | Kim; Sun-Ja | Methods for connection of precast concrete units |
| US5555697A (en) * | 1994-01-12 | 1996-09-17 | Kim; Sun J. | Method for connecting precast concrete units |
| KR20050082024A (en) * | 2004-02-17 | 2005-08-22 | (주)다산컨설턴트 | Heating panel of bridge for winter work |
| CN1944798A (en) * | 2006-11-13 | 2007-04-11 | 北京建工华创工程技术有限公司 | Low temperature construction method for bridge support grouting |
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