CN107245933A - A kind of method for cast-in-situ box girder top plate preformed hole construction - Google Patents

A kind of method for cast-in-situ box girder top plate preformed hole construction Download PDF

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Publication number
CN107245933A
CN107245933A CN201710545897.XA CN201710545897A CN107245933A CN 107245933 A CN107245933 A CN 107245933A CN 201710545897 A CN201710545897 A CN 201710545897A CN 107245933 A CN107245933 A CN 107245933A
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CN
China
Prior art keywords
template
cast
box girder
situ box
preformed hole
Prior art date
Application number
CN201710545897.XA
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Chinese (zh)
Inventor
付国刚
袁银书
张振禹
王丽梅
Original Assignee
中建六局土木工程有限公司
中国建筑第六工程局有限公司
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Application filed by 中建六局土木工程有限公司, 中国建筑第六工程局有限公司 filed Critical 中建六局土木工程有限公司
Priority to CN201710545897.XA priority Critical patent/CN107245933A/en
Publication of CN107245933A publication Critical patent/CN107245933A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/04Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The invention discloses a kind of method for cast-in-situ box girder top plate preformed hole construction, comprise the following steps:(1) pendent form is prepared, pendent form includes rectangle template, a lifting hole(eyelet) is had at the corner of template, the axis of each lifting hole(eyelet) and two adjacent sidelines 1~2cm of distance respectively, are stained between lifting hole(eyelet) sideline corresponding to template of the rectangle template per side and respectively the double-sided tape as waterstop parallel to corresponding sideline;(2) the both sides vertical end of two U-shaped hang springs is each passed through to two lifting hole(eyelet)s of each long side of template, pendent form is lifted into the cast-in-situ box girder roof steel bar being fixed at cast-in-situ box girder top plate preformed hole on the net by two U-shaped hang springs, and is adhesively fixed on the template of pendent form on the bottom wall of cast-in-situ box girder top plate by double-sided tape;(3) watering soaks template and concrete roof;(4) concrete pump is sent to preformed hole position with concrete mixer.The integral construction quality of cast-in-situ box girder is improved using this method.

Description

A kind of method for cast-in-situ box girder top plate preformed hole construction
Technical field
It is to be related to a kind of box beam preformed hole specifically the present invention relates to the construction method of the cast-in-situ box girder of science of bridge building Auxiliary construction method in concrete pouring construction.
Background technology
Concreting is one of important procedure of box girder construction, is directly connected to the oeverall quality of box girder construction.With regard to mesh From the point of view of preceding construction, tensioning is very universal in cleaning and case in cast-in-situ box girder case, to meet in case tensioning and removing after construction In case the need for rubbish, cast-in-situ box girder top plate sets preformed hole just into necessary working procedure.But due on cast-in-situ box girder top Plate reserves single or multiple holes, after the completion of chamber bottom plate, web concrete are poured, and the operation of preformed hole closure construction is very numerous It is trivial, easily occur the phenomenons such as concrete spillage, preformed hole bad sealing, have a strong impact on box beam top plate quality.
Application No. CN201220302361.8 Chinese patent discloses a kind of " dress for being used to make box beam hole for hoist Put ", it is included between steel pipe, round plate, the first reinforcing bar and two second reinforcing bars, the upper and lower side of described steel pipe close to lower end Tube wall has a circle staged end face, and the external diameter of the lower half pipeline section of step is less than the external diameter of the first half pipeline section of step, steel pipe Upper end madial wall in be set side by side with two second reinforcing bars perpendicular with the center line of steel pipe, the upper surface of steel pipe and connect It is connected to a round plate, the length direction of one end of the first reinforcing bar along steel pipe is through the inner chamber of steel pipe and with connecting in the middle part of round plate Connect, the other end of the first reinforcing bar is located at the outside of the lower end of steel pipe, this patent is used for the making of box beam hole for hoist.Inapplicable bridge The construction of cast-in-situ box girder preformed hole.
Application No. CN201020597717.6 Chinese patent is disclosed " a kind of single-box multi-room box girder template ", including bottom Mould, side form, end mould and multiple internal models;It is located at the two of outermost end in described bed die, side form, the bottom surface of internal model and multiple internal models Standoff distance is formed with multiple preformed holes, and above-mentioned each preformed hole and is mounted on the side of side form in individual internal model One removable cover.The single-box multi-room box girder template that this patent is provided is to utilize to set reserved in bed die, side form and internal model The method in hole excludes the air in casting process in template, while workmen can observe box beam bottom plate at any time by preformed hole And the compactness of web concrete, and manually vibrated by preformed hole when compactness does not reach design requirement.It is inapplicable In the construction of bridge cast-in-situ box-beam preformed hole.
Application No. CN200720089937.6 Chinese patent discloses " a kind of box girder inner formwork ", its top template two side ends The upper end with an epipleural is hinged respectively, and the upper end of the lower ends of two epipleurals respectively with a lower side panel is hinged, along described Top template longitudinal direction sets a vertical beam and jacking cylinder at interval of certain distance, all jacking cylinder upper ends with the top template Lower surface on longitudinal centre line is hinged, and all jacking cylinder lower ends are installed in respective vertical beam, all vertical beams and support Between be provided with guide rail and roller, top template is longitudinally provided with upper and lower telescopic oil cylinder on some horizontal tangent planes, and upper telescopic oil cylinder is set Put between top template and epipleural, lower telescopic oil cylinder is arranged between epipleural and lower side panel, the longitudinal some transverse directions of top template Upper and lower strut is provided with tangent plane, upper strut is arranged between top template and lower side panel, and lower supporting rod is arranged on epipleural and vertical beam Between.A kind of box girder inner formwork that this patent is provided, is not suitable for the construction of bridge cast-in-situ box-beam preformed hole.
The content of the invention
It is an object of the invention to overcome the shortcoming of prior art there is provided one kind to be used for cast-in-situ box girder top plate preformed hole construction Method, this method is simple, convenient, cost is low, and speed of application is fast, improves the integral construction quality of box beam.
In order to solve the above-mentioned technical problem, the present invention is achieved by following technical scheme:
A kind of method for cast-in-situ box girder top plate preformed hole construction, comprises the following steps:
(1) pendent form is prepared, described pendent form includes rectangle template, and the length and width of template compare cast-in-situ box girder respectively The length of top plate preformed hole and roomy 5~10cm, have a lifting hole(eyelet), the axle of each lifting hole(eyelet) at the corner of described template Line and two adjacent rectangle template sidelines 1~2cm of distance respectively, lifting hole(eyelet) of the rectangle template per side and corresponding template sideline it Between and be stained with the double-sided tape as waterstop respectively parallel to corresponding template sideline, two adjacent double-sided tapes connect each other Connect, the distance between double-sided tape distance template sideline described in per side is 2.5~5cm;
(2) the both sides vertical end of two U-shaped hang springs is each passed through to two lifting hole(eyelet)s of each long side of template, passes through two U-shaped hang spring lifts pendent form the cast-in-situ box girder roof steel bar being fixed at cast-in-situ box girder top plate preformed hole on the net, and passes through The template of pendent form is adhesively fixed on the bottom wall of cast-in-situ box girder top plate by double-sided tape;
(3) watering soaks template and concrete roof;
(4) concrete pump is sent to preformed hole position with concrete mixer, when pouring, pump truck end of conduit sets sebific duct, To reduce concrete height of drop, reduce the impulsive force to template, concrete edge pours side and vibrated, reach after codes and standards, stops Only vibrate, while carrying out covering curing, complete pouring for preformed hole concrete.
The beneficial effects of the invention are as follows:
Using the present invention cast-in-situ box girder preformed hole construction method, can in cast-in-situ box girder chamber room tensioning and rubbish it is clear After having managed, very easily fully sheathed case back plate preformed hole, simple, convenient, and speed of application is fast;And each part material therefor It is cheap, it is easy to process, suitable for the popularization and application in cast-in-situ box girder preformed hole concrete pouring construction.
The present invention solves cast-in-situ box girder concrete pouring construction and completed, after tensioning and rubbish are removed in case, preformed hole envelope The problem of construction is not easy to operate is closed, the integral construction quality of cast-in-situ box girder is improved.
Brief description of the drawings
Fig. 1 is the knot for the pendent form that a kind of method for cast-in-situ box girder top plate preformed hole construction of the invention is used Structure schematic diagram;
Fig. 2 is the use state schematic diagram of the pendent form shown in Fig. 1.
Embodiment
For present disclosure, feature and effect can be further appreciated that, the present invention is subject to specifically below in conjunction with the accompanying drawings It is bright:
As shown in drawings, the invention discloses a kind of method for cast-in-situ box girder top plate preformed hole construction, including it is following Step:
(1) pendent form is prepared, described pendent form includes rectangle template 2, and the length and width of template 2 are respectively than cast-in-place case The length and roomy 5~10cm of back plate preformed hole, can so ensure preformed hole concrete pouring quality, also be double-sided tape 3 There is provided and paste space;The selection of template 2 and cast-in-situ box girder end template identical template, to utilize the end template removed, section About material cost.A lifting hole(eyelet) 5 is had at the corner of described template 2, to avoid hang spring 1 and box beam concrete roof 4 produce conflict, the axis of each lifting hole(eyelet) 5 and two adjacent rectangle template sidelines 1~2cm of distance respectively, can so make mould The all directions stress of plate 2 is more balanced.The diameter of lifting hole(eyelet) 5 is adapted with the diameter of hang spring 1 as far as possible, in lifting hole(eyelet) of the rectangle template per side The double-sided tape 3 as waterstop is stained with respectively between 5 and the sideline of corresponding template 2 and parallel to corresponding template sideline, it is adjacent Two double-sided tapes 3 be connected to each other, be 2.5~5cm per the distance between sideline of 3 distance template of double-sided tape 2 described in side. It can so avoid occurring spillage during preformed hole concreting, it is ensured that concrete pouring quality.
(2) the both sides vertical end of two U-shaped hang springs 1 is each passed through to two lifting hole(eyelet)s 5 of each long side of template 2.Pass through Two U-shaped hang springs 1 lift pendent form on the cast-in-situ box girder roof steel bar net 6 being fixed at cast-in-situ box girder top plate preformed hole, And the template 2 of pendent form is adhesively fixed on the bottom wall of cast-in-situ box girder top plate by double-sided tape 3.
(3) watering soaks template 2 and concrete roof 4, it is to avoid dries to absorb because of template 2 and concrete roof 4 and newly pours Preformed hole concrete moisture content is built, desciccation crack is produced.
(4) concrete pump is sent to preformed hole position with concrete mixer, when pouring, pump truck end of conduit sets sebific duct, To reduce concrete height of drop, reduce the impulsive force to template 2.Concrete edge pours side and vibrated, and reaches after codes and standards, stops Only vibrate, while carrying out covering curing, complete pouring for preformed hole concrete.
Embodiment 1
(1) pendent form is prepared, described pendent form includes rectangle template 2, and the length and width of template 2 are respectively than cast-in-place case The length and roomy 5cm of back plate preformed hole;Template 2 is selected and cast-in-situ box girder end template identical template.In described template 2 A lifting hole(eyelet) 5 is had at corner, the axis of each lifting hole(eyelet) 5 is with two adjacent rectangle template sidelines respectively apart from 1cm.Hang The diameter in hole 5 is tried one's best to be adapted with the diameter of hang spring 1, between lifting hole(eyelet) 5 of the rectangle template per side and the sideline of corresponding template 2 and The double-sided tape 3 as waterstop is stained with respectively parallel to corresponding template sideline, and two adjacent double-sided tapes 3 are connected to each other, The distance between sideline of 3 distance template of double-sided tape 2 described in per side is 2.5cm.
(2) the both sides vertical end of two U-shaped hang springs 1 is each passed through to two lifting hole(eyelet)s 5 of each long side of template 2.Pass through Two U-shaped hang springs 1 lift pendent form on the cast-in-situ box girder roof steel bar net 6 being fixed at cast-in-situ box girder top plate preformed hole, And the template 2 of pendent form is adhesively fixed on the bottom wall of cast-in-situ box girder top plate by double-sided tape 3.
(3) watering soaks template 2 and concrete roof 4, it is to avoid dries to absorb because of template 2 and concrete roof 4 and newly pours Preformed hole concrete moisture content is built, desciccation crack is produced.
(4) concrete pump is sent to preformed hole position with concrete mixer, when pouring, pump truck end of conduit sets sebific duct, To reduce concrete height of drop, reduce the impulsive force to template 2.Concrete edge pours side and vibrated, and reaches after codes and standards, stops Only vibrate, while carrying out covering curing, complete pouring for preformed hole concrete.
Using this method, solve cast-in-situ box girder concrete pouring construction and complete, after tensioning and rubbish are removed in case, size The problem of preformed hole closure construction small, concrete square amount is small is not easy to operate, obtains the integral construction quality of cast-in-situ box girder Improve, work well.
Embodiment 2
(1) pendent form is prepared, described pendent form includes rectangle template 2, and the length and width of template 2 are respectively than cast-in-place case The length and roomy 8cm of back plate preformed hole;Template 2 is selected and cast-in-situ box girder end template identical template.In described template 2 A lifting hole(eyelet) 5 is had at corner, the axis of each lifting hole(eyelet) 5 is with two adjacent rectangle template sidelines respectively apart from 1.5cm. The diameter of lifting hole(eyelet) 5 is adapted with the diameter of hang spring 1 as far as possible, between the lifting hole(eyelet) 5 of the every side of rectangle template and the sideline of corresponding template 2 simultaneously And the double-sided tape 3 as waterstop is stained with respectively parallel to corresponding template sideline, two adjacent double-sided tapes 3 connect each other Connect, the distance between sideline of 3 distance template of double-sided tape 2 described in per side is 4cm.
(2) the both sides vertical end of two U-shaped hang springs 1 is each passed through to two lifting hole(eyelet)s 5 of each long side of template 2.Pass through Two U-shaped hang springs 1 lift pendent form on the cast-in-situ box girder roof steel bar net 6 being fixed at cast-in-situ box girder top plate preformed hole, And the template 2 of pendent form is adhesively fixed on the bottom wall of cast-in-situ box girder top plate by double-sided tape 3.
(3) watering soaks template 2 and concrete roof 4, it is to avoid dries to absorb because of template 2 and concrete roof 4 and newly pours Preformed hole concrete moisture content is built, desciccation crack is produced.
(4) concrete pump is sent to preformed hole position with concrete mixer, when pouring, pump truck end of conduit sets sebific duct, To reduce concrete height of drop, reduce the impulsive force to template 2.Concrete edge pours side and vibrated, and reaches after codes and standards, stops Only vibrate, while carrying out covering curing, complete pouring for preformed hole concrete.
Using this method, the appropriate increase size of template 2, adjustment sealing joint strip 3, the position of lifting hole(eyelet) 5 make template system stress It is more balanced, the problem of size is larger, concrete square amount is larger preformed hole closure construction is not easy to operate is solved well, this Method is simple, convenient, and speed of application is fast, works well.
Embodiment 3
(1) pendent form is prepared, described pendent form includes rectangle template 2, and the length and width of template 2 are respectively than cast-in-place case The length and roomy 10cm of back plate preformed hole;Template 2 is selected and cast-in-situ box girder end template identical template.In described template 2 Corner at have a lifting hole(eyelet) 5, the axis of each lifting hole(eyelet) 5 is with two adjacent rectangle template sidelines respectively apart from 2cm. The diameter of lifting hole(eyelet) 5 is adapted with the diameter of hang spring 1 as far as possible, between the lifting hole(eyelet) 5 of the every side of rectangle template and the sideline of corresponding template 2 simultaneously And the double-sided tape 3 as waterstop is stained with respectively parallel to corresponding template sideline, two adjacent double-sided tapes 3 connect each other Connect, the distance between sideline of 3 distance template of double-sided tape 2 described in per side is 5cm.
(2) the both sides vertical end of two U-shaped hang springs 1 is each passed through to two lifting hole(eyelet)s 5 of each long side of template 2.Pass through Two U-shaped hang springs 1 lift pendent form on the cast-in-situ box girder roof steel bar net 6 being fixed at cast-in-situ box girder top plate preformed hole, And the template 2 of pendent form is adhesively fixed on the bottom wall of cast-in-situ box girder top plate by double-sided tape 3.
(3) watering soaks template 2 and concrete roof 4, it is to avoid dries to absorb because of template 2 and concrete roof 4 and newly pours Preformed hole concrete moisture content is built, desciccation crack is produced.
(4) concrete pump is sent to preformed hole position with concrete mixer, when pouring, pump truck end of conduit sets sebific duct, To reduce concrete height of drop, reduce the impulsive force to template 2.Concrete edge pours side and vibrated, and reaches after codes and standards, stops Only vibrate, while carrying out covering curing, complete pouring for preformed hole concrete.
Using this method, by further increasing the position of the size of template 2, adjustment sealing joint strip 3 and lifting hole(eyelet) 5, increase The contact area of template system and concrete roof 4, adjustment is applied to the power on hang spring 1, makes the formation camber of template 2, more preferably The weight for bearing preformed hole concrete, solve that size is big well, the big preformed hole closure construction of concrete square amount is difficult The problem of operation, this method is simple, convenient, and speed of application is fast, works well.

Claims (2)

1. a kind of method for cast-in-situ box girder top plate preformed hole construction, it is characterised in that comprise the following steps:
(1) pendent form is prepared, described pendent form includes rectangle template, and the length and width of template are respectively than cast-in-situ box girder top plate The length of preformed hole and roomy 5~10cm, have a lifting hole(eyelet) at the corner of described template, the axis of each lifting hole(eyelet) with Two adjacent rectangle template sidelines, 1~2cm of distance respectively, between lifting hole(eyelet) of the rectangle template per side and corresponding template sideline simultaneously And the double-sided tape as waterstop is stained with respectively parallel to corresponding template sideline, two adjacent double-sided tapes are connected to each other, The distance between double-sided tape distance template sideline described in per side is 2.5~5cm;
(2) the both sides vertical end of two U-shaped hang springs is each passed through to two lifting hole(eyelet)s of each long side of template, passes through two U-shapeds Hang spring lifts pendent form the cast-in-situ box girder roof steel bar being fixed at cast-in-situ box girder top plate preformed hole on the net, and by two-sided The template of pendent form is adhesively fixed on the bottom wall of cast-in-situ box girder top plate by adhesive tape;
(3) watering soaks template and concrete roof;
(4) concrete pump is sent to preformed hole position with concrete mixer, when pouring, pump truck end of conduit sets sebific duct, to drop Low concrete height of drop, reduces the impulsive force to template, and concrete edge pours side and vibrated, reach after codes and standards, stops shaking Smash, while carrying out covering curing, complete pouring for preformed hole concrete.
2. the method according to claim 1 for cast-in-situ box girder top plate preformed hole construction, it is characterised in that:Described mould Plate is selected and cast-in-situ box girder end template identical template.
CN201710545897.XA 2017-07-06 2017-07-06 A kind of method for cast-in-situ box girder top plate preformed hole construction CN107245933A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108149924A (en) * 2018-01-17 2018-06-12 上海建工二建集团有限公司 A kind of piece method
CN109629432A (en) * 2018-12-28 2019-04-16 江苏镇江路桥工程有限公司 The construction method of box beam top plate reserving hole sealing off and covering anchorage structure
CN110777665A (en) * 2019-11-08 2020-02-11 广州市第三市政工程有限公司 Construction method of cast-in-situ box girder skylight supporting template

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JP2011208395A (en) * 2010-03-29 2011-10-20 Mitsui Eng & Shipbuild Co Ltd Structure and method for fixing planking for communication bridge between quay wall and floating body
CN202017346U (en) * 2011-04-13 2011-10-26 中建七局第二建筑有限公司 Late poured band hanging formwork structure
CN202081641U (en) * 2011-05-10 2011-12-21 中天建设集团有限公司天津分公司 Hanging mold used for floor prepared hole
CN103510466A (en) * 2013-10-11 2014-01-15 中铁十九局集团有限公司 Wet joint construction method of T-shaped beam bridge floor system
CN104947597A (en) * 2015-07-07 2015-09-30 中建三局第二建设工程有限责任公司 Concrete box girder manhole model sealing system and construction method
CN204875521U (en) * 2015-03-23 2015-12-16 王豪 Hang blue jib preformed hole plugging device
CN105401718A (en) * 2015-12-09 2016-03-16 苏州金螳螂建筑装饰股份有限公司 Floor hole blockage lifting mold structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011208395A (en) * 2010-03-29 2011-10-20 Mitsui Eng & Shipbuild Co Ltd Structure and method for fixing planking for communication bridge between quay wall and floating body
CN202017346U (en) * 2011-04-13 2011-10-26 中建七局第二建筑有限公司 Late poured band hanging formwork structure
CN202081641U (en) * 2011-05-10 2011-12-21 中天建设集团有限公司天津分公司 Hanging mold used for floor prepared hole
CN103510466A (en) * 2013-10-11 2014-01-15 中铁十九局集团有限公司 Wet joint construction method of T-shaped beam bridge floor system
CN204875521U (en) * 2015-03-23 2015-12-16 王豪 Hang blue jib preformed hole plugging device
CN104947597A (en) * 2015-07-07 2015-09-30 中建三局第二建设工程有限责任公司 Concrete box girder manhole model sealing system and construction method
CN105401718A (en) * 2015-12-09 2016-03-16 苏州金螳螂建筑装饰股份有限公司 Floor hole blockage lifting mold structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108149924A (en) * 2018-01-17 2018-06-12 上海建工二建集团有限公司 A kind of piece method
CN109629432A (en) * 2018-12-28 2019-04-16 江苏镇江路桥工程有限公司 The construction method of box beam top plate reserving hole sealing off and covering anchorage structure
CN109629432B (en) * 2018-12-28 2020-09-04 江苏镇江路桥工程有限公司 Construction method of box girder top plate reserved hole anchor sealing structure
CN110777665A (en) * 2019-11-08 2020-02-11 广州市第三市政工程有限公司 Construction method of cast-in-situ box girder skylight supporting template

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Application publication date: 20171013