CN104878695A - Viaduct cover beam shaping bottom die support and application method thereof - Google Patents
Viaduct cover beam shaping bottom die support and application method thereof Download PDFInfo
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- CN104878695A CN104878695A CN201510264438.5A CN201510264438A CN104878695A CN 104878695 A CN104878695 A CN 104878695A CN 201510264438 A CN201510264438 A CN 201510264438A CN 104878695 A CN104878695 A CN 104878695A
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Abstract
The invention discloses a viaduct cover beam shaping bottom die support and an application method thereof to solve the problems that in the prior art, a framed bent supporting method is adopted in two side bottom dies of a viaduct cover beam, the framed bent elevation is difficult to set, the aerial working out is large, and the construction efficiency and safety are low. The viaduct cover beam shaping bottom die support and the application method thereof are used for supporting the two side bottom dies of the planned construction cover beam. The support comprises at least two pairs of stand columns arranged below the two sides of the planned construction cover beam in the longitudinal direction at intervals, jacks, two stand column top connecting beam assemblies and two shaping bottom die supporting frames, wherein the number of the stand columns and the number of the jacks are the same, the two shaping bottom die supporting frames are prefabricated below the side bottom dies respectively, the jacks are arranged between the stand columns and the corresponding stand column top connecting beam assemblies, and the shaping bottom die supporting frames are arranged on the corresponding stand column top connecting beam assemblies. A large amount of aerial working out can be avoided, the integrity of the shaping bottom die supporting frames is better, the work period is effectively shortened labor manual cost is effectively saved, and the construction safety of the viaduct cover beam is obviously improved.
Description
Technical field
The present invention relates to city expressway viaduct Coping Construction field, particularly relate to for large cantilever arm bent cap sizing bed die support and using method thereof.
Background technology
In the construction of city expressway elevated bridge, bent cap is large-scale Cantilever Beams of Variable Cross Section, and present bridge appearance is comparatively novel, both sides, bent cap base band fillet.At present, capping beam template is supported by scaffolding steel pipe framed bent.There is following defect:
1) progress monitoring aspect: in viaduct Coping Construction, adopts the template framed bent setting up a Pin bent cap to need 8 days construction periods, sets up the absolute altitude that also constantly will regulate steel pipe framed bent in process.
2) cost control aspect: whole engineering has 53 Pin bent caps, conveniently framed bent system one Pin bent cap bed die is set up needs 10 scaffolders and is set up, and need the labour of at substantial, but the existing market quantity of labour force is in short supply, labour cost unit price is high.
3) security control aspect:
Conventional scaffolding steel pipe framed bent sizing bed die bracing frame system is set up process and is belonged to work high above the ground, and be major hazard source, steel pipe framed bent accident rate is higher.
In a word, for city expressway bridge engineering, the common engineering scale of construction is large, and schedule requirement is high, if adopt conventional scaffolding steel pipe framed bent system, then and can the progress of at substantial and artificial.Not only increase construction cost, and higher to construction safety control overflow.
Summary of the invention
The object of the present invention is to provide a kind of viaduct bent cap sizing bed die support and using method thereof, structure is simple, dependable performance, mounting or dismounting convenience, a large amount of amount of high-altitude operation can be evaded, and the globality of bed die bracing frame of shaping is better, effectively save duration and work cost of labor, significantly improve the working security of viaduct bent cap.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of viaduct bent cap sizing bed die support, for supporting two the sidepiece bed dies planning to build bent cap, comprise: be arranged at longitudinally spaced at least two columns planning to build bent cap down either side, with the jack of column equal number, two column top connection beam assemblies, and the two sizing bed die bracing frames be formed in advance respectively below described sidepiece bed die, shaping in described bent cap bed die and the left and right sides, bed die bracing frame is prefabricated to be formed, described jack is arranged between described column and corresponding described column top connection beam assembly, described sizing bed die bracing frame is arranged on corresponding described column top connection beam assembly.
Preferably, in above-mentioned viaduct bent cap sizing bed die support, described column top connection beam assembly comprises horizontally disposed two root post top contact longerons and some root post tops contact crossbeam, described some root post top contact beam vertical are arranged on described two root post top contact longerons, described two root post top contact longerons are erected on described jack, and described jack is arranged on each column.
Preferably, in above-mentioned viaduct bent cap sizing bed die support, described sizing bed die bracing frame comprises the truss of some vertical settings, some truss contact longeron and some bed dies and connects channel-section steel, the soffit that described bed die connects the shape of the upper surface of channel-section steel, size and described sidepiece bed die matches, described some bed dies connect the top that channel-section steel one_to_one corresponding is arranged at described some truss, described some truss spaced sets are on described some truss contact longerons, and it is perpendicular that described truss and described truss contact longeron.
Preferably, in above-mentioned viaduct bent cap sizing bed die support, described truss contact longeron is arranged on described some root post top contact crossbeams, and to contact crossbeam perpendicular described truss contact longeron and described some root post tops.Described column top contact longeron is Two bors d's oeuveres 36a i iron, and cross section parameter is h=360mmt=15.8mm b=136mm, d=10mm, and per pass column top contact longeron is long is 3m.Described column top contact crossbeam adopts 36a i iron, and cross section parameter is h=360mm t=15.8mm b=136mm, d=10mm, lays spacing 600mm.
Preferably, in above-mentioned viaduct bent cap sizing bed die support, described column is the steel pipe of Φ 609 × 16mm, and spacing is 2m.
Preferably, in above-mentioned viaduct bent cap sizing bed die support, the below of described column is provided with strip foundation, thus is convenient to arrange column, makes column can stable support sidepiece bed die.
The invention also discloses a kind of using method of viaduct bent cap sizing bed die support as above, comprise the steps:
The first step, the strip foundation planning to build viaduct bent cap both sides installs column;
Second step, each column installs jack respectively;
3rd step, the jack planning to build viaduct bent cap both sides arranges described column top connection beam assembly respectively;
4th step, the left and right sides sizing bed die bracing frame with the sidepiece bed die of bent cap is installed on corresponding column top connection beam assembly respectively.
From above disclosed technical scheme, compared with prior art, beneficial effect of the present invention is as follows:
1) progress monitoring aspect: in viaduct Coping Construction, because sizing bed die bracing frame arranges processing according to lid bottom elevation in advance, therefore without the need to carrying out the adjustment of absolute altitude in construction, after steel pipe post and the connection beam assembly installation of column top, settle at one go the installation of sizing bed die bracing frame, thus make the template system just energy installation in 3 days of a Pin bent cap, effectively save the duration.
2) cost control aspect: after sizing bed die bracing frame is set, can make in factory's preprocessing, sidepiece bed die is welded on sizing bed die bracing frame, on-site hoisting is located on the connection beam assembly of column top, therefore effectively can reduce labour, thus save the work cost of labor day by day gone up.
3) security control aspect:
After adopting sizing bed die bracing frame, a large amount of amount of high-altitude operation can be evaded, and the globality of bed die bracing frame of shaping is better, thus significantly improves the working security of viaduct bent cap.
Accompanying drawing explanation
Fig. 1 is the structural representation of the viaduct bent cap sizing bed die support of one embodiment of the invention;
Fig. 2 is the A-A sectional view of Fig. 1;
In figure: 1-strip foundation, 2-column, 3-jack, 4-column top contact longeron, 5-column top contact crossbeam, 6-truss contact longeron, 7-truss, 8-bed die connect bed die, 11-bent cap in the middle part of channel-section steel, 9-sidepiece bed die, 10-.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the viaduct bent cap sizing bed die support that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
Core concept of the present invention: in the construction of city expressway elevated bridge, bent cap is large-scale Cantilever Beams of Variable Cross Section, and present bridge appearance is comparatively novel, and both sides, bent cap base band fillet, therefore the height of framed bent is provided with difficulty.Consider and be convenient to the precise control of bent cap bed die absolute altitude, shorten sizing bed die bracing frame and set up the duration, reduce circulation material cost, for this is optimized former capping beam template framed bent scheme, viaduct bent cap sizing bed die support is set on steel pipe post, replace original scaffolding steel pipe framed bent, guarantee the quick and safety of the accurate location of bent cap and construction.
Refer to Fig. 1 to Fig. 2, present embodiment discloses a kind of viaduct bent cap sizing bed die support, for supporting two the sidepiece bed dies 9 planning to build bent cap 11, the bed die planning to build bent cap 11 comprises two sidepiece bed dies 9 and a middle part bed die 10, described viaduct bent cap sizing bed die support comprises: be arranged at least two columns 2 arranged along viaduct longitudinal separation planning to build bent cap 11 down either side, with the jack 3 of column 2 equal number, two column top connection beam assemblies, and the two sizing bed die bracing frames be formed in advance respectively below described sidepiece bed die 9, described jack 3 is arranged between described column 2 and corresponding described column top connection beam assembly, described sizing bed die bracing frame is arranged on corresponding described column top connection beam assembly.
On the one hand, sidepiece bed die 9 described in two and the left and right sides shape bed die bracing frame can be prefabricated and can be assembled into entirety.Because sizing bed die bracing frame arranges processing according to bent cap 11 end absolute altitude in advance, namely the shape size of the sidepiece bed die 9 of sizing bed die bracing frame and bent cap 11 matches, therefore without the need to carrying out the adjustment of absolute altitude in construction, after column 2 and the connection beam assembly installation of column top, can settle at one go the installation of sizing bed die bracing frame, make the template system just energy installation in 3 days of a Pin bent cap, effectively save the duration.
On the other hand, after sizing bed die bracing frame is set, can make in factory's preprocessing, sidepiece bed die 9 is welded on sizing bed die bracing frame, then on-site hoisting is located on the connection beam assembly of column top, therefore effectively can reduce labour, thus saves the work cost of labor day by day gone up.
Again on the one hand, after adopting sizing bed die bracing frame, a large amount of amount of high-altitude operation can be evaded, and the globality of bed die bracing frame of shaping is better, thus significantly improves the working security of viaduct bent cap 11.
Preferably, in above-mentioned viaduct bent cap sizing bed die support, described column top connection beam assembly comprises horizontally disposed two root post top contact longerons 4 and some root post tops contact crossbeam 5, described some root post top contact crossbeams 5 are vertically installed on described two root post top contact longerons 4, described two root post top contact longerons are erected on described jack 3, and described jack 3 is arranged on each column 2.In the present embodiment, totally 8, column 2, four, every side, namely longitudinally there is front and back two column 2 every side; Column top contact longeron 4 adopts Two bors d's oeuveres I36a i iron, totally four, two, every side, on the jack of two columns 2 corresponding before and after every root post top contact longeron 4 is arranged at; Described column top contact crossbeam 5 adopts the I36a i iron of long 9m, interval 600mm, totally four, two, every side, is arranged on described column top contact longeron 4.By arranging column top contact longeron 4 and column top contact crossbeam 5, the support of jack 3 to sizing bed die bracing frame can be made more stable, improve stability and the safety of the construction of bent cap.
Preferably, in above-mentioned viaduct bent cap sizing bed die support, described sizing bed die bracing frame comprises the truss 7 of some vertical settings, some truss contact longeron 6 and some bed dies and connects channel-section steel 8, the soffit that described bed die connects the shape of the upper surface of channel-section steel 8, size and described sidepiece bed die 9 matches, described some bed dies connect the top that channel-section steel 8 one_to_one corresponding is arranged at described some truss 7, described some truss 7 spaced set is on described some truss contact longerons 6, and it is perpendicular that described truss 7 and described truss contact longeron 6.Described truss 7, truss contact longeron 6, bed die connection channel-section steel 8 and sidepiece bed die 9 entirety can be together prefabricated in advance in factory.For the ease of transport, also can first truss 7, bed die be connected channel-section steel 8 and sidepiece bed die 9 and be prefabricated in the factory together, in below truss being contacted longeron 6 and be assembled into described truss 7 behind building site, to facilitate transport.
Preferably, in above-mentioned viaduct bent cap sizing bed die support, described truss contact longeron 6 is arranged on described some root post top contact crossbeams 5, and to contact crossbeam 5 perpendicular described truss contact longeron 6 and described some root post tops.
Contact longeron 4 and described column top to make described column top to contact crossbeam 5 and column 2 and more to shape described in firm support bed die bracing frame, described column top contact longeron 4 is preferably Two bors d's oeuveres 36a i iron, cross section parameter is h=360mm t=15.8mm b=136mm, d=10mm, per pass column top contact longeron 4 is long is 3m; Described column top contact crossbeam 5 adopts 36a i iron, and cross section parameter is h=360mm t=15.8mmb=136mm, d=10mm, lays spacing 600mm; Described column 2 is the steel pipe of Φ 609mm × 16mm, and spacing is 2m.
Preferably, in above-mentioned viaduct bent cap sizing bed die support, the below of described column 2 is provided with strip foundation 1.In order to make described strip foundation 1 better support described column 2 and on all parts, in the present embodiment, the cross section of described strip foundation 1 is preferably dimensioned to be 3000*600*500, and the dimensional units in cross section is mm.
Please continue to refer to Fig. 1 to Fig. 2, the present embodiment also discloses a kind of using method of viaduct bent cap sizing bed die support as above, adopt in advance existing conventional method set for support middle part bed die 10 midfoot support frame (not shown), the using method of described viaduct bent cap sizing bed die support, comprise the steps
The first step, the strip foundation 1 planning to build viaduct bent cap both sides installs column 2;
Second step, jack 3 installed respectively by each column 2;
3rd step, the jack 3 planning to build viaduct bent cap 11 both sides arranges described column top connection beam assembly respectively;
4th step, the left and right sides sizing bed die bracing frame with the sidepiece bed die 9 of bent cap is installed on corresponding column top connection beam assembly respectively.Thus the erection work of all bed dies of bent cap 11, then the side form (not shown) of bent cap 11 is set, to realize the casting craft of bent cap.The both sides bed die of middle bent cap is by the mode of bent-frame bracing compared to existing technology, the both sides bed die 9 of bent cap 11 of the present invention is by viaduct bent cap sizing bed die stent support, and both sides bed die 9 is formed on described sizing bed die bracing frame in advance, thus the on-the-spot overhead work amount eliminating a large amount of adjustment framed bent absolute altitude, effectively improve the efficiency of construction of bent cap, and improve the safety of Coping Construction.
In sum, the present embodiment has following beneficial effect:
1) progress monitoring aspect: in viaduct Coping Construction, safe construction is extremely important.Originally template framed bent need 8 days construction periods of a Pin bent cap are set up in employing, set up the absolute altitude that also constantly will regulate steel pipe framed bent in process, and after the present invention uses bed die sizing bed die bracing frame instead, the template system of a Pin bent cap 3 days just can installation.Sizing bed die bracing frame arranges processing according to lid bottom elevation in advance, therefore without the need to carrying out the adjustment of absolute altitude in construction, after steel pipe post installation, settles at one go the installation of sizing bed die bracing frame.
2) cost control aspect: after the present invention arranges sizing bed die bracing frame, make in factory's preprocessing and be welded on sizing bed die bracing frame by sidepiece bed die, on-site hoisting is located in ф 609 steel pipe post system.Whole engineering has 53 Pin bent caps, adopts 3 cover bed die sizing bed die bracing frame turnovers to construct.Average often cover bed die sizing bed die bracing frame can have enough to meet the need and turn over 17 times.Conveniently framed bent system one Pin bent cap bed die is set up needs 10 scaffolders and is set up, and adopts sizing bed die bracing frame only to need 2 scaffolders to coordinate electric welder to install.The existing market quantity of labour force is in short supply, and labour cost unit price is high.Sizing bed die bracing frame can reduce labour and save cost of labor.
3) security control aspect: the scaffolding steel pipe framed bent sizing bed die bracing frame system of existing routine is set up process and belonged to work high above the ground, and be major hazard source, steel pipe framed bent accident rate is higher.And after the present invention adopts sizing bed die bracing frame, this kind of dangerous matter sources can be evaded and the globality of bed die bracing frame of shaping is better.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (9)
1. a viaduct bent cap sizing bed die support, for supporting two the sidepiece bed dies planning to build bent cap, it is characterized in that, comprise: be arranged at plan to build bent cap down either side longitudinally spaced at least two columns, with jack, the two column top connection beam assemblies of column equal number and be formed on two below described sidepiece bed die respectively in advance and shape bed die bracing frame, described jack is arranged between described column and corresponding described column top connection beam assembly, and described sizing bed die bracing frame is arranged on corresponding described column top connection beam assembly.
2. viaduct bent cap sizing bed die support as claimed in claim 1, it is characterized in that, described column top connection beam assembly comprises horizontally disposed two root post top contact longerons and some root post tops contact crossbeam, described some root post top contact beam vertical are arranged on described two root post top contact longerons, described two root post top contact longerons are erected on described jack, and described jack is arranged on each column.
3. viaduct bent cap sizing bed die support as claimed in claim 1, it is characterized in that, described sizing bed die bracing frame comprises the truss of some vertical settings, some truss contact longeron and some bed dies and connects channel-section steel, the soffit that described bed die connects the shape of the upper surface of channel-section steel, size and described sidepiece bed die matches, described some bed dies connect the top that channel-section steel one_to_one corresponding is arranged at described some truss, described some truss spaced sets are on described some truss contact longerons, and it is perpendicular that described truss and described truss contact longeron.
4. viaduct bent cap sizing bed die support as claimed in claim 3, is characterized in that, described truss contact longeron is arranged on described some root post top contact crossbeams, and to contact crossbeam perpendicular described truss contact longeron and described some root post tops.
5. viaduct bent cap sizing bed die support as claimed in claim 2, is characterized in that, described column top contact longeron is Two bors d's oeuveres 36a i iron, and cross section parameter is h=360mm, t=15.8mm, b=136mm, d=10mm, and per pass column top contact longeron is long is 3m.
6. viaduct bent cap sizing bed die support as claimed in claim 2, is characterized in that, described column top contact crossbeam adopts 36a i iron, and cross section parameter is h=360mm, t=15.8mm, b=136mm, d=10mm, lays spacing 600mm.
7. viaduct bent cap sizing bed die support as claimed in claim 1, it is characterized in that, described column is the steel pipe of Φ 609 × 16mm, and spacing is 2m.
8. viaduct bent cap sizing bed die support as claimed in claim 1, it is characterized in that, the below of described column is provided with strip foundation.
9., as a using method for the viaduct bent cap sizing bed die support in claim 1-8 as described in any one, it is characterized in that, comprise the steps:
The first step, the strip foundation planning to build viaduct bent cap both sides installs column;
Second step, each column installs jack respectively;
3rd step, the jack planning to build viaduct bent cap both sides arranges described column top connection beam assembly respectively;
4th step, the left and right sides sizing bed die bracing frame with the sidepiece bed die of bent cap is installed on corresponding column top connection beam assembly respectively.
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| CN107916623A (en) * | 2017-12-22 | 2018-04-17 | 宁波二十冶建设有限公司 | A kind of bent cap elevation adjusting device and adjusting method |
| CN109778715A (en) * | 2019-03-25 | 2019-05-21 | 中冶建工集团有限公司 | Assembled support platform and its installation and removal method |
| CN109778714A (en) * | 2019-03-25 | 2019-05-21 | 中冶建工集团有限公司 | Assembled steel structure support platform and its installation and removal method |
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| CN109778715A (en) * | 2019-03-25 | 2019-05-21 | 中冶建工集团有限公司 | Assembled support platform and its installation and removal method |
| CN109778714A (en) * | 2019-03-25 | 2019-05-21 | 中冶建工集团有限公司 | Assembled steel structure support platform and its installation and removal method |
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