CN113818361A - 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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- CN113818361A CN113818361A CN202111155639.3A CN202111155639A CN113818361A CN 113818361 A CN113818361 A CN 113818361A CN 202111155639 A CN202111155639 A CN 202111155639A CN 113818361 A CN113818361 A CN 113818361A
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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 template support at overpass bent cap top is solved, for whole template support provides the set up platform for project construction progress, save 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 is divided into 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 an elevated bridge cover beam, but the elevated bridge cover beam is positioned near a tunnel portal, the site is limited, the terrain is greatly fluctuated, 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 elevated bridge cover beam cannot be directly erected on the existing original ground.
The traditional bridge building method has two types: firstly, the original ground excavation work of construction is suspended, the existing original ground is leveled, a building platform is provided for the steel pipe Bailey support, and the construction period of the foundation expansion of the lower bridge abutment is greatly influenced; and secondly, after the original ground is dug in place, the steel pipe Bailey bracket is erected, so that the construction period of the viaduct bent cap is greatly influenced.
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, the one end of whole template support is equipped with the first support that falls to the ground, the other end of whole template support is equipped with the second support that falls to the ground, and the first support that falls to the ground and second 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, and the stand passes through first connecting block fixed mounting on first existing structure surface, the longeron bottom is equipped with the existing structure of second, and longeron and the existing structure 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 fell to the ground the support is equipped with the heelpiece, first falling to the ground support and the inside equal fixed mounting of second fell to the ground support have the reinforcement support, first falling to the ground support and second are equipped with the second linking bridge between the support, and the second linking bridge is close to the top of pier, and the both ends of second linking bridge respectively with first falling to the ground support, second fell to the ground support fixed connection, first falling to the ground support, second fell to the ground support and connect all to be fixed with first linking bridge between the 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 first floor bracket is installed by the following method:
sp 1: fixedly installing an upright post on the first existing structure through welding between the steel bar and the steel plate;
sp 2: fixing a first cross beam at the top of the upright post;
sp 3: 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;
sp 4: firstly mounting a first group of second cross beams on the top surface of the longitudinal beam, and then mounting a second group of second cross beams, wherein the two groups of second cross beams are fixed with a Bailey sheet steel plate in the longitudinal beam through bolts;
sp 5: 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 bent cap according to the present invention under a special ground condition;
fig. 2 is a side view of one end of a viaduct capping beam according to the present invention in a particular situation;
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 cross-sectional view of one end of a viaduct bent cap according to the present invention under a particular ground condition;
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 stringer; 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 bent cap; 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-4, a template support cantilever support system comprises an integral template support 12, one end of the integral template support 12 is provided with a first floor support 5, the other end of the integral template support 12 is provided with a second floor support 16, the first floor support 5 and the second floor support 16 are both fixedly connected with the integral template support 12, the bottom end of the first floor support 5 is provided with a second cross beam 4, the bottom of the second cross beam 4 is provided with a first cross beam 2, 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, the bottom surface of the first cross beam 2 is provided with an upright post 1, the top end of the upright post 1 is fixedly connected with the first cross beam 2, the second cross beams 4 are provided with two groups, the first cross beams 2 are provided with one group, the two groups of second cross beams 4 are in mirror symmetry with the central axis of the longitudinal beam 3, the integral template support 12 and the longitudinal beam 3 are both assembled by adopting bailey pieces as materials, the integral template support 12 is formed by combining two groups of spliced Bailey sheets, each group is formed by splicing three rows of Bailey sheets, the two groups of spliced Bailey sheets are in mirror symmetry with the central axis of the longitudinal beam 3, the longitudinal beam 3 is formed by combining three groups of spliced Bailey sheets at equal intervals, and each group is formed by splicing three rows of Bailey 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 tilt and lose stability around a fulcrum, under the action of loads F1 and F2, the force arms of the load to the central axis of the first cross beam 2 are a and b respectively, 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 < 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 support 5 and the second support 16 that falls to the ground, 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 case, the first landing supports 5 can be installed at both ends of the viaduct bent cap 11 due to the terrain problem or the ground condition problem, and the installation methods at both ends are the same, by installing the upright post 1 and the first cross beam 2 on the first existing structure 6, the first cross beam 2 is fixedly installed at the top end of the upright post 1 and can provide a fulcrum for the longitudinal beam 3, the second cross beam 4 is provided on the longitudinal beam 3 by the suspended cantilever arm of the longitudinal beam 3, and then the first landing supports 5 are installed on the second cross beam 4, so that the platform for erecting the integral formwork support 12 is finally formed together.
Example three:
a method for installing a cantilever support of a formwork support comprises the following steps:
sp 1: fixedly mounting the upright post 1 on the first existing structure 13 through a first connecting block 6;
sp 2: fixing a first cross beam 2 on the top of the upright post 1;
sp 3: 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;
sp 4: the top surface of the longitudinal beam 3 is firstly provided with a first group of second cross beams 4, and then is provided with a second group of second cross beams 4, and the two groups of second cross beams 4 are fixed with a Bailey sheet steel plate in the longitudinal beam 3 through bolts;
sp 5: 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.
Claims (7)
1. A formwork support cantilever support system, includes whole formwork support (12), its characterized in that: the one end of whole template support (12) is equipped with first support (5) that falls to the ground, the other end of whole template support (12) is equipped with the second and falls to the ground support (16), and first support (5) and the second fall to the ground support (16) equal with whole template support (12) fixed connection, the first bottom that falls to the 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 and first crossbeam (2) fixed connection of stand (1).
2. The formwork support cantilever support system of claim 1, wherein: the bottom of stand (1) is equipped with first existing structure (613), and stand (1) and fixed mounting have first connecting block (6) surface between first existing structure (613), longeron (3) bottom is equipped with and is equipped with second existing structure (19), has second connecting block (7) between longeron (3) and second existing structure (19).
3. The formwork support cantilever support system of claim 1, wherein: 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, there is overpass bent cap (11) pier (18) top, be equipped with between pier (18) and whole template support (12) center and connect fixed subassembly (9), and connect 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.
4. The formwork support cantilever support system of claim 1, wherein: the bottom that the second fell to the ground support (16) is equipped with heelpiece (17), first fall to the ground support (5) and the inside equal fixed mounting of second fell to the ground support (16) has reinforcement support (15), first fall to the ground support (5), the second fell to the ground support (16) and connect fixed subassembly (9) between all be equipped with second linking bridge (10), and second linking bridge (10) are close to the top of pier (18), and the both ends of second linking bridge (10) respectively with first support (5), the second fell to the ground support (16) fixed connection, first support (5) that falls to the ground, second fell to the ground support (16) and connect all to be fixed with first linking bridge (8) between fixed subassembly (9), and form the obtuse angle between two first linking bridge (8).
5. 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 connecting block (19) between unable adjustment base (13) and the existing structure of second (7), first existing structure (13) are equipped with support base (14), and first existing structure (13) and support base (14) all pour and form.
6. 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 two sets of second crossbeam (4) are mirror symmetry with the central axis of longeron (3), 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 the concatenation of three rows of bailey piece, 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 equidistant three groups of concatenations, and each group is formed by the concatenation of three rows of bailey piece.
7. A template support cantilever support mounting method is characterized in that: the mounting method of the first floor stand (5) is as follows:
sp 1: fixedly installing the upright post (1) on the first existing structure (6) by welding between the steel bar and the steel plate;
sp 2: fixing a first cross beam (2) at the top of the upright post (1);
sp 3: leveling measures are taken for the top surface of the second existing structure (19), sand and stones 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;
sp 4: the top surface of the longitudinal beam (3) is firstly provided with a first group of second cross beams (4), and then a second group of second cross beams (4) are arranged, wherein the two groups of second cross beams (4) are fixed with a Bailey sheet steel plate in the longitudinal beam (3) through bolts;
sp 5: and 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 a sand box and an integral formwork bracket (12).
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 |
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| 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 true CN113818361A (en) | 2021-12-21 |
| CN113818361B CN113818361B (en) | 2023-04-18 |
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Cited By (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 |
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| CN113818361B (en) | 2023-04-18 |
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