CN113818361B - Template support cantilever support system and installation method thereof - Google Patents
Template support cantilever support system and installation method thereof Download PDFInfo
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- CN113818361B CN113818361B CN202111155639.3A CN202111155639A CN113818361B CN 113818361 B CN113818361 B CN 113818361B CN 202111155639 A CN202111155639 A CN 202111155639A CN 113818361 B CN113818361 B CN 113818361B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention provides a template support cantilever support system and an installation method thereof, and relates to the technical field of constructional engineering. The difficult problem of original ground excavation and the unable simultaneous construction of whole formwork support at overpass bent cap top has been solved, for whole formwork support provides sets up the platform for project construction progress saves construction period, and can be applicable to different topography, also can be applied to the operating mode when aquatic, geological conditions are poor.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a template support cantilever support system and an installation method thereof.
Background
The floor type formwork support is generally applied to bridge construction, and when the floor type formwork support is erected, a steel pipe upright post of the support needs to be erected on a stable platform; a certain newly-built project comprises an elevated bridge and a lower-layer bridge, the lower-layer bridge is connected with a newly-built tunnel, a steel pipe Bailey template support needs to be erected for a viaduct bent cap, the viaduct bent cap is located near a tunnel opening, the site is limited, the terrain undulation is large, the original ground needs to be excavated, the abutment for constructing the lower-layer bridge is enabled to enlarge the foundation, and the steel pipe Bailey support of the viaduct bent cap cannot be directly erected on the existing original ground.
The traditional bridge building method has two types: firstly, leveling the existing original ground to provide a building platform for a steel pipe bailey bracket, but causing great influence on the construction period of expanding the foundation of a lower bridge abutment; and the second method is to set up a steel pipe Bailey bracket after the original ground is excavated in place, which has great influence on the construction period of the viaduct bent cap.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a template support cantilever support system and an installation method thereof, solves the problem that original ground excavation and viaduct bent cap steel pipe Bailey supports cannot be constructed simultaneously, provides a building platform for the steel pipe Bailey supports, accelerates project construction progress and saves construction period.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a template support cantilever support system, includes whole template support, whole template support's one end is equipped with first floor stand, whole template support's the other end is equipped with the second and falls to the ground the support, and first floor stand and second fall to the ground the support all with whole template support fixed connection, the first bottom that falls to the ground the support is equipped with the second crossbeam, the bottom of second crossbeam is equipped with first crossbeam, be equipped with the longeron between first crossbeam and the second crossbeam, and first crossbeam and second crossbeam pass through the longeron fixed, the bottom surface of first crossbeam is equipped with the stand, and the top and the first crossbeam fixed connection of stand.
Preferably, the bottom of stand is equipped with first existing structure thing, and the stand passes through first connecting block fixed mounting on first existing structure thing surface, the longeron bottom is equipped with the existing structure thing of second, and longeron and the existing structure thing of second are equipped with the second connecting block.
Preferably, the bottom center of whole template support is equipped with the pier, and whole template support fixed mounting is at the pier top, pier top fixed mounting has the viaduct bent cap, be equipped with between pier and the whole template support center and connect fixed subassembly, and connect fixed subassembly's both ends respectively with pier inner wall, whole template support bottom surface fixed connection, and connect fixed subassembly and whole template support bottom surface perpendicular.
Preferably, the bottom that the second falls to the ground the support is equipped with the heelpiece, first landing support and the inside equal fixed mounting of second landing support have the reinforcement support, be equipped with the second linking bridge between first landing support and the second landing support, and the second linking bridge is close to the top of pier, and the both ends of second linking bridge respectively with first landing support, second landing support fixed connection, all be fixed with first linking bridge between first landing support, second landing support and the connection fixed subassembly, and form the obtuse angle between two first linking bridge.
Preferably, the bottom of stand is equipped with first existing structure thing, and the stand passes through first connecting block fixed mounting at first existing structure thing top surface, first existing structure thing is equipped with the support base, and unable adjustment base and support base all pour and form.
Preferably, the second crossbeam sets up two sets ofly, and first crossbeam is a set of, and two sets of second crossbeams are mirror symmetry with the central axis of longeron, whole template support and longeron all adopt the bailey piece to form for the material equipment, whole template support is formed by the bailey piece combination of two sets of concatenations, and each group is formed by three rows of bailey pieces concatenations, and the bailey piece of two sets of concatenations is mirror symmetry with the central axis of longeron, the longeron is formed by the bailey piece combination of three groups of concatenations of equidistant, and each group is formed by three rows of bailey pieces concatenations.
Preferably, the formwork support cantilever support mounting method includes the following steps:
sp1: fixedly installing an upright post on the first existing structure through welding between the steel bar and the steel plate;
sp2: fixing a first cross beam at the top of the upright post;
sp3: leveling measures are taken for the top surface of the second existing structure, sand and stone and an electric steel plate are paved on the surface of the second existing structure, and then a longitudinal beam is installed;
sp4: firstly mounting a first group of second cross beams on the top surfaces of the longitudinal beams, and then mounting a second group of second cross beams, wherein the two groups of second cross beams are fixed with the Bailey sheet steel plate in the longitudinal beams through bolts;
sp5: and hoisting and erecting first floor supports in sequence, arranging and fixing the first floor supports on the second cross beam respectively, and fixing the top ends of the first floor supports through a sand box and an integral template support.
(III) advantageous effects
The invention provides a template support cantilever support system and an installation method thereof. The method has the following beneficial effects:
1. according to the method, the problem that the whole formwork support at the top of the cover beam of the viaduct and the original ground excavation cannot be constructed simultaneously is solved, the erection platform is provided for the whole formwork support, project construction progress is accelerated, and construction period is saved.
2. The integral support frame is arranged on the first existing structure, so that the integral support frame can be suitable for different terrains, can also be applied to working conditions in water and under poor geological conditions, and the installation mode of the first floor support can be adjusted according to different terrains; when special circumstances, the both ends of viaduct bent cap all have topography problem or ground condition problem and can adopt all to install first support that falls to the ground at the both ends of viaduct, adopt different mounting means according to the topography of difference, saving construction period that can be great to the practicality is strong, is equipped with very big help to the bridge is built, has better ground application prospect.
Drawings
Fig. 1 is a plan view of one end of a viaduct capping beam according to the present invention under a special ground condition;
fig. 2 is a side view of one end of a viaduct cap beam in the present invention showing a special ground condition;
FIG. 3 is a partial structural diagram of a special ground condition at one end of a viaduct bent cap according to the present invention;
fig. 4 is a partial sectional view of one end of a viaduct capping beam according to the present invention in a particular situation;
FIG. 5 is a plan view of the ends of the overpass cap of the present invention exposed to a particular terrain;
fig. 6 is a partial sectional view showing the special ground conditions occurring at both ends of the overpass cap beam of the present invention.
Wherein, 1, upright post; 2. a first cross member; 3. a longitudinal beam; 4. a second cross member; 5. a first floor stand; 6. a first connection block; 7. a second connecting block; 8. a first connecting bracket; 9. connecting and fixing the components; 10. a second connecting bracket; 11. a viaduct capping beam; 12. an integral formwork support; 13. a first existing structure; 14. a support base; 15. reinforcing the bracket; 16. a second floor stand; 17. a bottom pad; 18. a bridge pier; 19. a second existing structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-4, a formwork support cantilever support system comprises an integral formwork support 12, a first floor support 5 is arranged at one end of the integral formwork support 12, a second floor support 16 is arranged at the other end of the integral formwork support 12, the first floor support 5 and the second floor support 16 are fixedly connected with the integral formwork support 12, a second cross beam 4 is arranged at the bottom end of the first floor support 5, a first cross beam 2 is arranged at the bottom end of the second cross beam 4, a longitudinal beam 3 is arranged between the first cross beam 2 and the second cross beam 4, the first cross beam 2 and the second cross beam 4 are fixed through the longitudinal beam 3, a stand column 1 is arranged at the bottom surface of the first cross beam 2, the top end of the stand column 1 is fixedly connected with the first cross beam 2, the second cross beams 4 are arranged in two groups, the first cross beam 2 is a group, the two groups of second cross beams 4 are in mirror symmetry with the central axis of the longitudinal beam 3, the integral formwork support 12 and the longitudinal beam 3 are assembled by adopting beret sheets as materials, the integral formwork support 12 is formed by combining two groups of beret sheets, each group is formed by splicing three beret sheets, each group by splicing three beret sheets, and the central axis of the longitudinal beam 3 is formed by splicing the three beret group by splicing the same distance of beret sheets.
Through set up first connecting block 6 on first existing structure 13, stand 1 and first crossbeam 2, first crossbeam 2 fixed mounting can provide the fulcrum for longeron 3 on 1 top of stand, through the unsettled cantilever arm of longeron 3, for setting up second crossbeam 4 on longeron 3 and providing the condition, again through installing first ground support 5 that falls on second crossbeam 4, make it finally form the platform of setting up of whole template support 12 jointly, through this kind of method, the difficult problem that whole template support 12 at former ground excavation and elevated bridge bent cap 11 top can't be under construction simultaneously has been solved, set up the platform for whole template support 12 has been provided, project construction progress has been accelerated, save construction period.
Through installing holistic braced frame on first existing structure 13, can be applicable to different topography, also can be applied to aquatic, the operating mode when geological conditions are poor to first landing support 5's installation also can be according to the topography of difference and adjust the mounting means of first landing support 5, and in general case, the condition that has topography problem or special ground condition appears in the one end of viaduct bent cap 11, just can adopt the one end installation first landing support 5 that has topography problem or special ground condition, and the other end adopts second landing support 16.
The bottom of stand 1 is equipped with first existing structure 13, and stand 1 through first connecting block 6 fixed mounting on first existing structure 13 surface, and longeron 3 bottom is equipped with second existing structure 19, and is equipped with second connecting block 7 between longeron 3 and the second existing structure 19.
One end of the longitudinal beam 3 is supported on the second existing structure 19, the connection relationship between the two is only under compression and no tension, the other end of the longitudinal beam 3 is arranged on the first cross beam 2, under the action of a single load F1, the longitudinal beam 3 may warp and lose stability around a fulcrum, under the action of loads F1 and F2, the force arms from the load to the central axis of the first cross beam 2 are respectively a and b, and the corresponding load moments M1 and M2 are:
M1＝F1*a
M2＝F2*b
in order to ensure the stable structure, the following requirements are met: m1 is less than M2.
The bottom center of whole template support 12 is equipped with pier 18, and whole template support 12 fixed mounting is at pier 18 top, and pier 18 top fixed mounting has overhead bridge bent cap 11, is equipped with between pier 18 and the center of whole template support 12 and connects fixed subassembly 9, and connects the both ends of fixed subassembly 9 respectively with pier 18 inner wall, whole template support 12 bottom surface fixed connection, and connect fixed subassembly 9 and whole template support 12 bottom surface perpendicular.
The bottom of the second floor stand 16 is provided with a bottom pad 17, a reinforcing support 15 is fixedly mounted inside the first floor stand 5 and the second floor stand 16, a second connecting support 10 is arranged between the first floor stand 5 and the second floor stand 16, the second connecting support 10 is close to the top of a pier 18, two ends of the second connecting support 10 are respectively fixedly connected with the first floor stand 5 and the second floor stand 16, a first connecting support 8 is fixedly arranged between the first floor stand 5 and the second floor stand 16 and between the fixed components 9, and an obtuse angle is formed between the two first connecting supports 8.
First linking bridge 8, second linking bridge 10 and reinforcement support 15 are the stability that provides the guarantee to first floor support 5 and second floor support 16, improvement overall support structure's that can be further dynamics.
The bottom of stand 1 is equipped with first existing structure 13, and stand 1 through first connecting block 6 fixed mounting at first existing structure 13 top surface, and first existing structure 13 is equipped with support base 14, and first existing structure 13 and support base 14 all pour and form.
Example two:
referring to fig. 5 and 6, in a special situation, when there is a topographic problem or a ground condition problem at both ends of the viaduct bent cap 11, the first floor brackets 5 may be installed at both ends of the viaduct, and the installation methods at both ends are the same, by installing the upright 1 and the first cross beam 2 on the first existing structure 13, the first cross beam 2 is fixedly installed at the top end of the upright 1 to provide a fulcrum for the longitudinal beam 3, and by suspending the cantilever arm of the longitudinal beam 3, a condition is provided for the second cross beam 4 to be installed on the longitudinal beam 3, and then by installing the first floor bracket 5 on the second cross beam 4, the platform on which the integral formwork bracket 12 is finally and commonly built is finally formed, and by adopting different installation methods according to different topographies, the construction period can be greatly saved, and the practicability is strong, and great help is provided for bridge construction, and the application prospect is good.
Example three:
a formwork support cantilever support mounting method comprises the following steps:
sp1: the upright post 1 is fixedly arranged on the first existing structure 13 through a first connecting block 6;
sp2: fixing a first cross beam 2 on the top of the upright post 1;
sp3: leveling measures are taken for the top surface of the second existing structure 19, gravels are paved on the surface of the second existing structure 19, leveling is carried out through a second connecting block 7, and then the longitudinal beam 3 is installed;
sp4: firstly mounting a first group of second cross beams 4 on the top surface of the longitudinal beam 3, and then mounting a second group of second cross beams 4, wherein the two groups of second cross beams 4 are fixed with a Bailey sheet steel plate in the longitudinal beam 3 through bolts;
sp5: the first floor brackets 5 are hoisted and erected in sequence, the first floor brackets 5 are respectively arranged and fixed on the second cross beam 4, and the top ends of the first floor brackets 5 are fixed through the sand box and the integral formwork bracket 12.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a formwork support cantilever support system, includes whole formwork support (12), the one end of whole formwork support (12) is equipped with first floor support (5), the other end of whole formwork support (12) is equipped with the second and falls to ground support (16), and first floor support (5) and second fall to ground support (16) and all with whole formwork support (12) fixed connection, the first bottom that falls to ground support (5) is equipped with second crossbeam (4), the bottom of second crossbeam (4) is equipped with first crossbeam (2), be equipped with longeron (3) between first crossbeam (2) and second crossbeam (4), and first crossbeam (2) and second crossbeam (4) are fixed through longeron (3), the bottom surface of first crossbeam (2) is equipped with stand (1), and the top of stand (1) and first crossbeam (2) fixed connection, its characterized in that: the bottom center of the integral template bracket (12) is provided with a pier (18), and the integral template bracket (12) is fixedly arranged at the top of the pier (18), the top of the pier (18) is provided with an overhead bridge capping beam (11), a connecting and fixing component (9) is arranged between the pier (18) and the center of the integral template bracket (12), and both ends of the connecting and fixing component (9) are respectively and fixedly connected with the inner wall of the pier (18) and the bottom surface of the integral template bracket (12), and the connecting and fixing component (9) is vertical to the bottom surface of the integral template bracket (12), the bottom of the second floor support (16) is provided with a bottom pad (17), the first floor stand (5) and the second floor stand (16) are both internally and fixedly provided with a reinforcing bracket (15), a second connecting bracket (10) is arranged among the first floor bracket (5), the second floor bracket (16) and the connecting and fixing component (9), and the second connecting bracket (10) is close to the top of the pier (18), and both ends of the second connecting bracket (10) are respectively fixedly connected with the first grounding bracket (5) and the second grounding bracket (16), first connecting supports (8) are fixed among the first floor support (5), the second floor support (16) and the connecting and fixing assembly (9), and an obtuse angle is formed between the two first connecting supports (8).
2. The formwork support cantilever support system of claim 1, wherein: the bottom of stand (1) is equipped with first existing structure (13), and stand (1) and fixed mounting have first connecting block (6) surface between first existing structure (13), longeron (3) bottom is equipped with second existing structure (19), has second connecting block (7) between longeron (3) and the second existing structure (19).
3. The formwork support cantilever support system of claim 1, wherein: the bottom of stand (1) is equipped with first connecting block (6), and stand (1) through first connecting block (6) fixed mounting at first existing structure (13) top surface, fixed mounting has second connecting block (7) between first existing structure (13) and the existing structure of second (19), first existing structure (13) are equipped with support base (14), and first existing structure (13) and support base (14) are all pour and are formed.
4. The formwork support cantilever support system of claim 1, wherein: second crossbeam (4) set up two sets ofly, and first crossbeam (2) are a set of, and the central axis that two sets of second crossbeams (4) used longeron (3) is mirror symmetry, whole template support (12) and longeron (3) all adopt the bailey piece to form for the material equipment, whole template support (12) are formed by the bailey piece combination of two sets of concatenations, and each group is formed by three rows of bailey pieces concatenation, and the bailey piece of two sets of concatenations is mirror symmetry with the central axis of longeron (3), longeron (3) are formed by the bailey piece combination of three sets of concatenations of equidistant, and each group is formed by three rows of bailey pieces concatenation.
5. The method of installing a formwork support cantilever support system according to claim 1, wherein: the mounting method of the first floor stand (5) is as follows:
sp1: fixedly installing the upright post (1) on the first existing structure (13) through welding between the steel bar and the steel plate;
sp2: fixing a first cross beam (2) at the top of the upright post (1);
sp3: leveling measures are taken for the top surface of the second existing structure (19), sand and stone are paved on the surface of the second existing structure (19), the second connecting block (7) of the electric cushion steel plate is leveled, and then the longitudinal beam (3) is installed;
sp4: firstly mounting a first group of second cross beams (4) on the top surface of the longitudinal beam (3), and then mounting a second group of second cross beams (4), wherein the two groups of second cross beams (4) are fixed with a Bailey sheet steel plate in the longitudinal beam (3) through bolts;
sp5: the first floor supports (5) are hoisted and erected in sequence, the first floor supports (5) are respectively arranged and fixed on the second cross beam (4), and the top ends of the first floor supports (5) are fixed with the integral formwork support (12) through the sand box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155639.3A CN113818361B (en) | 2021-09-30 | 2021-09-30 | Template support cantilever support system and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155639.3A CN113818361B (en) | 2021-09-30 | 2021-09-30 | Template support cantilever support system and installation method thereof |
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| Publication Number | Publication Date |
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| CN113818361A CN113818361A (en) | 2021-12-21 |
| CN113818361B true CN113818361B (en) | 2023-04-18 |
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| CN202111155639.3A Active CN113818361B (en) | 2021-09-30 | 2021-09-30 | Template support cantilever support system and installation method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323920A (en) * | 2022-07-12 | 2022-11-11 | 中建八局第二建设有限公司 | Construction supporting device for middle pier stud viaduct capping beam and using method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204690596U (en) * | 2015-05-21 | 2015-10-07 | 上海市政建设有限公司 | Viaduct bent cap sizing bed die support |
| CN105735141B (en) * | 2016-05-05 | 2017-08-11 | 中铁上海工程局集团有限公司 | A kind of box beam side form slide device and its construction method |
| CN209619853U (en) * | 2018-11-26 | 2019-11-12 | 中国建筑土木建设有限公司 | A kind of box beam support system using existing structure column |
| CN210134362U (en) * | 2019-03-28 | 2020-03-10 | 中交路桥建设有限公司 | Bridge overlength cantilever bent cap construction support |
| CN213867405U (en) * | 2020-11-30 | 2021-08-03 | 中国建筑第五工程局有限公司 | Single-column bent cap steel pipe column bailey beam construction support system |
| CN216040719U (en) * | 2021-09-30 | 2022-03-15 | 福建第一公路工程集团有限公司 | Template support cantilever bearing structure |
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