CN113005928A - Formwork erecting method for concrete pouring of ultra-long small box culvert - Google Patents
Formwork erecting method for concrete pouring of ultra-long small box culvert Download PDFInfo
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- CN113005928A CN113005928A CN202110277865.2A CN202110277865A CN113005928A CN 113005928 A CN113005928 A CN 113005928A CN 202110277865 A CN202110277865 A CN 202110277865A CN 113005928 A CN113005928 A CN 113005928A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
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Abstract
The invention discloses a template supporting method for concrete pouring of an overlong small box culvert, which solves the problems of how to realize the quick assembly and disassembly of a template system in the box culvert and the efficient tissue construction process; the integral box-type supporting frame is assembled by steel pipes on site, and a box-type supporting frame travelling wheel is arranged on a cross beam at the bottom end of the box-type supporting frame, so that the whole box-type supporting frame can move along two parallel channel steel rails like a trolley; the box-type supporting frame is used as a supporting frame for the inner side templates of the two vertical walls of the box culvert and the box culvert top plate pouring template; the method is characterized in that three box type supporting frames with completely the same structure are built on site, and from the middle position of concrete pouring of the ultra-long small box culvert, templates are sequentially erected and poured in a left-right circulation stepping type segmentation mode, so that the concrete pouring speed of the ultra-long small box culvert is greatly improved.
Description
Technical Field
The invention relates to a concrete pouring template for an ultra-long small box culvert, in particular to a template stepping type erecting method capable of accelerating construction progress in concrete pouring of the ultra-long small box culvert.
Background
In the process of pouring the small box culvert concrete, the conventional construction comprises the steps of firstly constructing a box culvert bottom plate, erecting a box culvert formwork system on the box culvert bottom plate, pouring two vertical walls and a top plate of the concrete box culvert on the system, continuously erecting a formwork system of a lower-section box culvert after detaching two vertical walls and a top plate formwork after the poured concrete reaches a formwork detaching condition, and repeating the steps to complete the concrete construction of the whole box culvert; because the internal space of the small box culvert is limited, the problems of time and labor waste during the dismantling of the die carriers and the top plate templates on the inner sides of the two vertical walls and certain potential safety hazards exist, and the problems are more prominent particularly when the ultra-long small box culvert is constructed; how to realize the quick assembly and disassembly of the template system in the box culvert becomes a problem to be solved on site; when the small-size box culvert of concrete of construction overlength, the setting up of template becomes the main factor that restricts the engineering progress, how to realize the high-efficient utilization of template, in the work progress, the work phenomenon of litter does not appear, and smooth and easy tissue construction engineering also is another problem that needs to solve in the work progress.
Disclosure of Invention
The invention provides a formwork erecting method for concrete pouring of an ultra-long small box culvert, and solves the technical problems of how to realize quick assembly and disassembly of a formwork system inside the box culvert and efficient organization construction process.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: the integral box-type supporting frame is assembled by steel pipes on site, and a box-type supporting frame travelling wheel is arranged on a cross beam at the bottom end of the box-type supporting frame, so that the whole box-type supporting frame can move along two parallel channel steel rails like a trolley; the box-type supporting frame is used as a supporting frame for the inner side templates of the two vertical walls of the box culvert and the box culvert top plate pouring template; the method is characterized in that three box type supporting frames with completely the same structure are built on site, and from the middle position of concrete pouring of the ultra-long small box culvert, templates are sequentially erected and poured in a left-right circulation stepping type segmentation mode, so that the concrete pouring speed of the ultra-long small box culvert is greatly improved.
A template supporting method for concrete pouring of an ultra-long small box culvert comprises a hoisting transfer trolley, wherein a left first pouring box culvert section is arranged at the center of box culvert construction, a box culvert pouring middle vacant section is arranged on the right side of the left first pouring box culvert section, a right first pouring box culvert section is arranged on the right side of the box culvert pouring middle vacant section, a right second pouring box culvert section is arranged on the right side of the right first pouring box culvert section, and a left second pouring box culvert section is arranged on the left side of the left first pouring box culvert section; the method is characterized by comprising the following steps:
firstly, splicing an integral box-type supporting frame by using steel pipes on site, arranging a box-type supporting frame walking wheel support on a bottom end beam of the box-type supporting frame, and arranging box-type supporting frame walking wheels on the box-type supporting frame walking wheel support; a top end jackscrew is arranged on the upper top surface of the box-type supporting frame, a left side jackscrew is arranged on the left side surface of the box-type supporting frame, and a right side jackscrew is arranged on the right side surface of the box-type supporting frame; assembling three box-type supporting frames with completely same structures on site, wherein the three box-type supporting frames are respectively defined as a first box-type supporting frame, a second box-type supporting frame and a third box-type supporting frame;
secondly, constructing a box culvert bottom plate for casting the box culvert section for the first time to the left, a box culvert bottom plate for casting the middle vacancy section for casting the box culvert section for the first time to the right, and arranging two parallel channel steel tracks on the constructed box culvert bottom plate;
thirdly, placing a first box-type supporting frame on a channel steel track on a box culvert bottom plate for pouring the box culvert section for the first time leftwards, placing a jack between the box culvert bottom plate and the first box-type supporting frame, jacking the first box-type supporting frame integrally by using the jack, enabling a box-type supporting frame walking wheel to leave the ground, adjusting a box-type supporting frame walking wheel support to the highest position, lowering the jack, enabling the whole box-type supporting frame to stably fall on the box culvert bottom plate, and enabling the box-type supporting frame walking wheel to be suspended; after the top end jackscrew is heightened, the upper end of the top end jackscrew is jacked and connected with a box culvert top plate pouring template, a left side jackscrew is leftwards adjusted and extended, the left end of the left side jackscrew is jacked and connected with a left side vertical wall inner side template, a right side jackscrew is rightwards adjusted and extended, and the right end of the right side jackscrew is jacked and connected with a right side vertical wall inner side template; installing outer side templates of the vertical walls on the left side and the right side, and pouring concrete for pouring the box culvert section for the first time leftwards;
fourthly, placing the second box-type supporting frame on a channel steel track on a box culvert bottom plate of the box culvert section which is poured rightwards for the first time, repeating the step of the third step, and pouring concrete of the box culvert section which is poured rightwards for the first time;
fifthly, placing the third box-type supporting frame on a channel steel track on a box culvert bottom plate of the box culvert section poured for the second time to the left, repeating the step of the third step, and pouring concrete of the box culvert section poured for the second time to the left;
sixthly, constructing a box culvert bottom plate of the box culvert section which is poured rightwards for the second time, and extending a channel steel track on the bottom plate;
seventhly, after the concrete poured into the box culvert section for the first time is solidified, lowering a top end jackscrew on the first box-type supporting frame to separate the box culvert section from a box culvert top plate pouring template, dismantling the box culvert top plate pouring template, respectively adjusting a left side jackscrew and a right side jackscrew to separate the left side jackscrew from a left side vertical wall inner side template, dismantling a left side vertical wall inner side template to separate the right side jackscrew from a right side vertical wall inner side template, and dismantling a right side vertical wall inner side template; placing a jack between a box culvert bottom plate and a first box type supporting frame, jacking the first box type supporting frame integrally by using the jack, adjusting a box type supporting frame walking wheel support to the lowest position, lowering the jack to enable the first box type supporting frame to be supported on a box type supporting frame walking wheel, and pushing the first box type supporting frame to the right to a position of a box culvert pouring middle vacant section;
seventhly, hoisting and transporting the first box-type supporting frame to a channel steel track of a box culvert section poured to the right for the second time through a hoisting transfer trolley, and carrying out template erection and concrete pouring work;
eighthly, constructing a box culvert bottom plate for pouring box culvert sections three times to the left, and extending channel steel tracks on the bottom plate;
ninth, after concrete poured into the box culvert section for the first time is solidified rightwards, and after the seventh step is repeated, the second box type supporting frame is pushed leftwards to the position of the box culvert pouring middle vacant section; hoisting and transporting the second box-type supporting frame to a channel steel track for pouring the box culvert section for three times to the left by using a hoisting transfer trolley, and carrying out template erection and concrete pouring work;
the left and right circulation step-by-step work is carried out, and the concrete construction of the whole box culvert is completed; and finally, completing concrete pouring of the box culvert on the box culvert pouring middle empty section.
The box culvert structure is characterized in that two channel steel tracks which are parallel to each other are arranged on a poured box culvert bottom plate, a box supporting frame walking wheel support is arranged on a bottom cross beam of a box supporting frame, box supporting frame walking wheels are arranged on the box supporting frame walking wheel support, box supporting frame walking wheels are movably arranged in the channel steel tracks, a top end jackscrew is arranged on the upper top surface of the box supporting frame, a box culvert top plate pouring template is connected to the upper end of the top end jackscrew in a butting mode, a left side jackscrew is arranged on the left side surface of the box supporting frame, a left side vertical wall inner side template is connected to the left end of the left side jackscrew in a butting mode, a right side jackscrew is arranged on the right side surface of the box supporting frame, and a right side vertical wall inner side template is.
A row of support penetrating holes for connecting the walking wheel supports with the bottom end cross beam are formed in the walking wheel supports of the box-type supporting frame along the vertical direction, cross beam connecting holes of the walking wheel supports are formed in the bottom end cross beam, and inserting pins are penetrated between the support penetrating holes and the cross beam connecting holes; an X-shaped supporting connecting frame is arranged between two parallel channel steel rails.
The invention solves the defects that the inner side template of the concrete small box culvert needs to be repeatedly assembled and disassembled during pouring, the disassembly is inconvenient, and the potential safety hazard is high during the disassembly; the construction of the inner side template of the integral box culvert can be completed by one-time erection; the scientific and reasonable left and right transfer order of the whole template greatly accelerates the construction speed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the box-type support frame of the present invention during walking movement;
FIG. 3 is a schematic structural view of the box-type supporting frame of the present invention in box culvert concrete casting;
fig. 4 is a schematic structural view of two parallel channel rails 2 according to the present invention;
fig. 5 is a schematic view of the connection structure between the box-type support frame road wheel bracket 12 and the bottom end beam 13.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a template supporting method for concrete pouring of an ultra-long small box culvert comprises a hoisting transfer trolley 23, wherein a left first pouring box culvert section 15 is arranged at the center of box culvert construction, a box culvert pouring middle vacant position section 16 is arranged on the right side of the left first pouring box culvert section 15, a right first pouring box culvert section 17 is arranged on the right side of the box culvert pouring middle vacant position section 16, a right second pouring box culvert section 19 is arranged on the right side of the right first pouring box culvert section 17, and a left second pouring box culvert section 18 is arranged on the left side of the left first pouring box culvert section 15; the method is characterized by comprising the following steps:
firstly, splicing an integral box-type supporting frame by using steel pipes on site, arranging a box-type supporting frame walking wheel support 12 on a bottom end beam 13 of the box-type supporting frame, and arranging box-type supporting frame walking wheels 4 on the box-type supporting frame walking wheel support 12; a top end jackscrew 5 is arranged on the upper top surface of the box-type supporting frame, a left side jackscrew 6 is arranged on the left side surface of the box-type supporting frame, and a right side jackscrew 7 is arranged on the right side surface of the box-type supporting frame; three box-type supporting frames with completely same structures are assembled on site and defined as a first box-type supporting frame 21, a second box-type supporting frame 22 and a third box-type supporting frame 20 respectively;
secondly, constructing a box culvert bottom plate for casting the box culvert section 15 for the first time towards the left, a box culvert bottom plate for casting the middle vacancy section 16 for the box culvert, and a box culvert bottom plate for casting the box culvert section 17 for the first time towards the right, and arranging two parallel channel steel tracks 2 on the constructed box culvert bottom plate;
thirdly, placing a first box-type supporting frame 21 on a channel steel track 2 on a box culvert bottom plate for pouring the box culvert section 15 for the first time leftwards, placing a jack between the box culvert bottom plate and the first box-type supporting frame 21, jacking the first box-type supporting frame 21 integrally by using the jack to enable box-type supporting frame walking wheels 4 to leave the ground, adjusting a box-type supporting frame walking wheel support 12 to the highest position, lowering the jack to enable the whole box-type supporting frame 3 to stably fall on the box culvert bottom plate, and enabling the box-type supporting frame walking wheels 4 to be suspended; after the top end jackscrew 5 is heightened, a box culvert top plate pouring template 10 is jacked and connected to the upper end of the top end jackscrew 5, a left side jackscrew 6 is lengthened leftwards, the left end of the left side jackscrew 6 is jacked and connected to a left side vertical wall inner side template 8, a right side jackscrew 7 is lengthened rightwards, and the right end of the right side jackscrew 7 is jacked and connected to a right side vertical wall inner side template 9; installing outer side templates of the vertical walls on the left side and the right side, and pouring concrete for pouring the box culvert section for the first time leftwards;
fourthly, placing the second box-type supporting frame 22 on the channel steel track 2 on the box culvert bottom plate of the box culvert section 17 which is poured rightwards for the first time, repeating the step of the third step, and pouring concrete of the box culvert section which is poured rightwards for the first time;
fifthly, placing the third box-type supporting frame 20 on the channel steel track 2 on the box culvert bottom plate of the box culvert section 18 poured for the second time to the left, repeating the step of the third step, and pouring concrete poured for the box culvert section for the second time to the left;
sixthly, constructing a box culvert bottom plate of the box culvert section 19 which is poured rightwards for the second time, and extending the channel steel track 2 on the bottom plate;
seventhly, after the concrete poured into the box culvert section 15 for the first time is solidified, lowering the top end jackscrew 5 on the first box-type supporting frame 21 to separate the box culvert from the box culvert top plate pouring template 10, removing the box culvert top plate pouring template 10, adjusting the left side jackscrew 6 and the right side jackscrew 7 respectively to separate the left side jackscrew 6 from the left side vertical wall inner side template 8, removing the left side vertical wall inner side template 8 to separate the right side jackscrew 7 from the right side vertical wall inner side template 9, and removing the right side vertical wall inner side template 9; placing a jack between a box culvert bottom plate and a first box type supporting frame 21, jacking the first box type supporting frame 21 integrally by using the jack, adjusting a box type supporting frame walking wheel bracket 12 to the lowest position, lowering the jack to enable the first box type supporting frame 21 to be supported on a box type supporting frame walking wheel 4, and pushing the first box type supporting frame 21 to the right to the position of a box culvert pouring middle vacant section 16;
seventhly, hoisting and transporting the first box-shaped supporting frame 21 to the channel steel track 2 of the box culvert section 19 which is poured to the right for the second time through a hoisting transfer trolley 23, and carrying out template erection and concrete pouring work;
eighthly, constructing a box culvert bottom plate for pouring box culvert sections three times to the left, and extending the channel steel rails 2 on the bottom plate;
ninth, after concrete for pouring the box culvert section 17 to the right for the first time is solidified, and after the seventh step is repeated, the second box-type supporting frame 22 is pushed to the left to the position of the box culvert pouring middle empty section 16; hoisting and transporting the second box-type supporting frame 22 to the channel steel track 2 of the box culvert section poured for three times to the left by the hoisting transfer trolley 23, and carrying out template erection and concrete pouring work;
the left and right circulation step-by-step work is carried out, and the concrete construction of the whole box culvert is completed; finally, completing concrete pouring of the box culvert on the box culvert pouring middle empty section 16; according to the invention, as the concrete in the pouring section of the poured concrete needs longer time for solidification, the integral box-type supporting frame 3 in the concrete pouring section firstly exits the box culvert along the channel steel track 2 backwards, reaches the box culvert pouring middle empty space section 16, and is conveyed to the next pouring position ahead by the hoisting transfer trolley 23, so that the phenomenon of work nest is avoided, and the construction speed is accelerated.
The box culvert structure is characterized in that two parallel channel steel rails 2 are arranged on a poured box culvert bottom plate 1, a box supporting frame walking wheel support 12 is arranged on a bottom end cross beam 13 of a box supporting frame 3, box supporting frame walking wheels 4 are arranged on the box supporting frame walking wheel support 12, the box supporting frame walking wheels 4 are movably arranged in the channel steel rails 2, a top end jackscrew 5 is arranged on the upper top surface of the box supporting frame 3, a box culvert top plate pouring template 10 is connected to the upper end of the top end jackscrew 5 in a propping mode, a left side jackscrew 6 is arranged on the left side surface of the box supporting frame 3, a left side vertical wall inner side template 8 is connected to the left end of the left side jackscrew 6 in a propping mode, a right side jackscrew 7 is arranged on the right side surface of the box supporting frame 3, and a right side vertical wall inner side template 9 is connected to.
A row of support penetrating holes for connecting the walking wheel supports with the bottom end beam 13 are formed in the walking wheel support 12 of the box type supporting frame along the vertical direction, the walking wheel supports can be adjusted in different heights by penetrating inserting pins in different holes, the bottom end beam 13 is provided with beam connecting holes of the walking wheel supports, and inserting pins 14 are penetrated between the support penetrating holes and the beam connecting holes; an X-shaped support link 11 is arranged between two parallel channel rails 2.
Claims (1)
1. A template supporting method for concrete pouring of an ultra-long small box culvert comprises a hoisting transfer trolley (23), wherein a box culvert section (15) is poured for the first time to the left at the center of the box culvert construction, a box culvert pouring middle empty position section (16) is arranged on the right side of the box culvert section (15) poured for the first time to the left, a box culvert section (17) poured for the first time to the right is arranged on the right side of the box culvert section (16) poured for the first time to the right, a box culvert section (19) poured for the second time to the right is arranged on the right side of the box culvert section (17) poured for the first time to the right, and a box culvert section (18) poured for the second time to the left is arranged on the left side of the box culvert section (15); the method is characterized by comprising the following steps:
firstly, splicing an integral box-type supporting frame by using steel pipes on site, arranging a box-type supporting frame walking wheel support (12) on a bottom end beam (13) of the box-type supporting frame, and arranging box-type supporting frame walking wheels (4) on the box-type supporting frame walking wheel support (12); a top end jackscrew (5) is arranged on the upper top surface of the box-type supporting frame, a left side jackscrew (6) is arranged on the left side surface of the box-type supporting frame, and a right side jackscrew (7) is arranged on the right side surface of the box-type supporting frame; three box-type supporting frames with completely same structures are assembled on site and defined as a first box-type supporting frame (21), a second box-type supporting frame (22) and a third box-type supporting frame (20) respectively;
secondly, constructing a box culvert bottom plate for casting the box culvert section (15) for the first time to the left, a box culvert bottom plate for casting the middle vacant section (16) for the box culvert, and a box culvert bottom plate for casting the box culvert section (17) for the first time to the right, and arranging two parallel channel steel tracks (2) on the constructed box culvert bottom plate;
thirdly, placing a first box-type supporting frame (21) on a channel steel track (2) on a box culvert bottom plate for pouring a box culvert section (15) for the first time leftwards, placing a jack between the box culvert bottom plate and the first box-type supporting frame (21), jacking the first box-type supporting frame (21) integrally by using the jack, enabling box-type supporting frame walking wheels (4) to leave the ground, adjusting a box-type supporting frame walking wheel support (12) to the highest position, descending the jack, enabling the whole box-type supporting frame (3) to stably fall on the box culvert bottom plate, and enabling the box-type supporting frame walking wheels (4) to be suspended; after the top end jackscrew (5) is heightened, a box culvert roof plate pouring template (10) is jacked and connected to the upper end of the top end jackscrew (5), a left side jackscrew (6) is lengthened leftwards, the left end of the left side jackscrew (6) is jacked and connected to a left side vertical wall inner side template (8), a right side jackscrew (7) is lengthened rightwards, and the right end of the right side jackscrew (7) is jacked and connected to a right side vertical wall inner side template (9); installing outer side templates of the vertical walls on the left side and the right side, and pouring concrete for pouring the box culvert section for the first time leftwards;
fourthly, placing the second box-type supporting frame (22) on a channel steel track (2) on a box culvert bottom plate of the box culvert section (17) which is poured rightwards for the first time, repeating the step of the third step, and pouring concrete of the box culvert section which is poured rightwards for the first time;
fifthly, placing a third box-type supporting frame (20) on a channel steel track (2) on a box culvert bottom plate of the box culvert section (18) poured for the second time to the left, repeating the step of the third step, and pouring concrete of the box culvert section poured for the second time to the left;
sixthly, constructing a box culvert bottom plate of the box culvert section (19) which is poured to the right for the second time, and extending the channel steel track (2) on the bottom plate;
seventhly, after the concrete of the box culvert section (15) is poured leftwards for the first time is solidified, adjusting down the top end jackscrews (5) on the first box type supporting frame (21) to separate the box culvert top plate pouring templates (10), removing the box culvert top plate pouring templates (10), adjusting the left side jackscrews (6) and the right side jackscrews (7) respectively to separate the left side jackscrews (6) from the left side vertical wall inner side templates (8), removing the left side vertical wall inner side templates (8), separating the right side jackscrews (7) from the right side vertical wall inner side templates (9), and removing the right side vertical wall inner side templates (9); a jack is placed between a box culvert bottom plate and a first box type supporting frame (21), the first box type supporting frame (21) is jacked up integrally by the jack, a box type supporting frame walking wheel support (12) is adjusted to the lowest position, the jack is lowered, the first box type supporting frame (21) is supported on a box type supporting frame walking wheel (4), and the first box type supporting frame (21) is pushed to the right to a position where a box culvert pouring middle vacancy section (16) is formed;
seventhly, hoisting and transporting the first box-shaped supporting frame (21) to a channel steel track (2) of the box culvert section (19) which is poured to the right for the second time through a hoisting transfer trolley (23) to carry out template erection and concrete pouring work;
eighthly, constructing a box culvert bottom plate for pouring box culvert sections three times to the left, and extending channel steel rails (2) on the bottom plate;
ninth, after concrete poured into the box culvert section (17) for the first time is solidified rightwards, and after the seventh step is repeated, the second box type supporting frame (22) is pushed leftwards to the position where the box culvert is poured into the middle empty section (16); hoisting and transporting a second box-type supporting frame (22) to a channel steel track (2) of a box culvert section poured for three times to the left by a hoisting transfer trolley (23) to carry out template erection and concrete pouring work;
the left and right circulation step-by-step work is carried out, and the concrete construction of the whole box culvert is completed; and finally, completing concrete pouring of the box culvert on the box culvert pouring middle vacancy section (16).
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| CN208717763U (en) * | 2018-08-27 | 2019-04-09 | 中国葛洲坝集团第六工程有限公司 | A kind of cast-in-place box culvert rapid molding device |
| CN111195977A (en) * | 2020-02-18 | 2020-05-26 | 山西三建集团有限公司 | Concrete structure bay window frame plate integral casting inner formwork system and mounting and dismounting method thereof |
| CN111424570A (en) * | 2020-04-30 | 2020-07-17 | 广西路建工程集团有限公司 | Assembly type trolley for box culvert construction and construction method thereof |
| CN112458936A (en) * | 2020-11-30 | 2021-03-09 | 中铁十六局集团地铁工程有限公司 | Construction method for integrally translating box culvert full-hall support |
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