CN111893892B - Bracket mounting method for box girder construction - Google Patents
Bracket mounting method for box girder construction Download PDFInfo
- Publication number
- CN111893892B CN111893892B CN202010733917.8A CN202010733917A CN111893892B CN 111893892 B CN111893892 B CN 111893892B CN 202010733917 A CN202010733917 A CN 202010733917A CN 111893892 B CN111893892 B CN 111893892B
- Authority
- CN
- China
- Prior art keywords
- support
- cast
- bent cap
- box girder
- place box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Abstract
The invention discloses a bracket mounting method for box girder construction, which comprises the following steps of firstly, erecting a bent cap bracket and a construction platform; secondly, adjusting a bent cap support, and removing a bent cap template and a support of a redundant bent cap construction platform except for the projected area of the bent cap after the bent cap is poured and the form removal strength is achieved; two pieces of I14I-shaped steel which are placed upside down are respectively added on the longitudinal beams on the two sides of the cover beam to be used as supports of a support bottom support of the cast-in-place box beam, so that the overall stability of the support is enhanced; and thirdly, building a cast-in-place box girder support, placing I14I-shaped steel as a cross beam of the cast-in-place box girder construction platform on a top support of the cast-in-place box girder support in the transverse bridge direction, laying 10 multiplied by 10cm square timber on the cross beam in the longitudinal bridge direction, and finally laying a bottom die of the cast-in-place box girder. The invention solves the technical problems of low support utilization rate, long construction time and high construction cost caused by independent erection of the established structures of the conventional cover beam and the cast-in-place box beam.
Description
Technical Field
The invention relates to the field of bridge engineering construction, in particular to a bracket mounting method for box girder construction.
Background
The capping beam is an important component for supporting, distributing and transferring the load of the upper structure of the bridge, is a cross beam arranged at the top of the framed bent pier, mainly functions to support the upper structure of the bridge and transfer all the load to the lower structure, and is usually constructed by adopting a hoop method.
The cast-in-situ box girder is a common design structure form in engineering construction, and is particularly suitable for cast-in-situ box girders with small turning radius and variable cross sections. The cast-in-place box girder is constructed by a full framing method commonly, and the load on the upper part is transmitted to a ground foundation through the bearing of the bracket.
In the traditional construction process, the two are usually constructed by adopting a single bearing system, and no connection is generated in the construction process. And the bent cap utilizes the anchor ear arranged at the top of the cylinder as a bearing structure to set up a bent cap construction platform to complete the construction of the bent cap at the top of the cylinder. And the cast-in-place box girder at the upper part of the cover girder is constructed by adopting a method of erecting a full support. The disadvantages of such a process are:
(1) the assembly and disassembly process of the hoop is complicated during the construction of the bent cap, and material equipment such as the hoop and bolts is needed, so that the construction cost and the construction period are consumed;
(2) the conversion of the two stress systems of the hoop and the full support also needs to consume certain construction cost and construction period;
(3) the full framing only provides the support for the construction of cast-in-place box girder alone, and the utilization ratio of support is low.
Disclosure of Invention
The invention mainly aims to provide a support mounting method for box girder construction, which aims to solve the technical problems of low support utilization rate, long construction time and high construction cost caused by the fact that the conventional capping beam and cast-in-place box girder are independently erected.
In order to achieve the purpose, a bracket mounting method for box girder construction is provided.
The bracket mounting method for box girder construction provided by the invention comprises the following steps:
the method comprises the following steps that firstly, a bent cap support and a construction platform are erected, the bent cap support is erected by adopting a disc buckle type full support, the bent cap construction platform sequentially consists of longitudinal beams and cross beams from bottom to top, and a bent cap bottom template is erected on the cross beams;
secondly, adjusting a bent cap support, and removing a bent cap template and a support of a redundant bent cap construction platform except for the projected area of the bent cap after the bent cap is poured and the form removal strength is achieved; two pieces of I14I-shaped steel which are placed upside down are respectively added on the longitudinal beams on the two sides of the cover beam to be used as supports of a support bottom support of the cast-in-place box beam, so that the overall stability of the support is enhanced;
thirdly, erecting a cast-in-place box girder support, erecting double rows of cast-in-place box girder supports around the bent cap by utilizing the bent cap construction platform, and arranging two cross rods together, wherein the cast-in-place box girder supports on two sides of the bent cap are arranged on inverted I14I-shaped steel, the supports at the end parts of the bent cap are arranged in a double-top-support mode, and the top supports at the lower parts are directly arranged on I14I-shaped steel longitudinal beams of the bent cap construction platform; I14I-steel is placed on the top support of the cast-in-place box girder support in the transverse bridge direction to serve as a cross beam of the cast-in-place box girder construction platform, 10 x 10cm square timber is laid on the cross beam in the longitudinal bridge direction, and finally a bottom die of the cast-in-place box girder is laid.
Furthermore, a bent cap support and a construction platform are erected, the longitudinal beams are I14I-shaped steel arranged in the longitudinal bridge direction, and the cross beams are square wood arranged in the transverse bridge direction and 10 multiplied by 10cm in length.
Further, I14I-steel is placed to the crossbeam of putting as cast-in-place box girder construction platform to the horizontal bridge on cast-in-place box girder bracket's top support, specifically is: 4I 14I-beams are placed on the top support of the cast-in-place box girder support in the transverse bridge direction to serve as the cross beam of the cast-in-place box girder construction platform.
In the embodiment of the invention, the mode of fusing the structures of the cover beam and the cast-in-place box beam support is adopted, the cast-in-place box beam support is erected on the existing cover beam support by fully utilizing the existing cover beam support, and the aim of conveniently and quickly constructing the support installation of the cast-in-place box beam on the upper part of the cover beam is achieved, so that the technical effects of convenient installation of the bridge support and cost saving are realized, and the technical problems of low support utilization rate, long construction time and high construction cost caused by the fact that the conventional cover beam and the cast-in-place box beam are erected independently are solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the invention and to make further features, objects, and advantages of the invention apparent. The drawings and their description illustrate exemplary embodiments of the invention and do not limit it inappropriately. In the drawings:
fig. 1 is a conventional hoop-method capping process according to the related art;
fig. 2 is a construction process of a cast-in-place box girder according to a conventional bracket method of the related art;
FIG. 3 is a schematic illustration of a platform for a bent cap support according to an embodiment of the present application;
FIG. 4 is a schematic illustration of an adjusted capping beam construction platform according to an embodiment of the present application;
FIG. 5 is a schematic view of an inverted I-beam and shoe according to an embodiment of the present application;
fig. 6 is a schematic view of a cast-in-place beam support platform according to an embodiment of the present invention.
Detailed Description
In order to make the person skilled in the art better understand the application scheme of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely 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, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, shall fall within the scope of protection of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present application are described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the drawings.
The capping beam is an important component for supporting, distributing and transferring the load of the upper structure of the bridge, is a cross beam arranged at the top of the framed bent pier, mainly functions to support the upper structure of the bridge and transfer all the load to the lower structure, and is usually constructed by adopting a hoop method.
The cast-in-situ box girder is a common design structure form in engineering construction, and is particularly suitable for cast-in-situ box girders with small turning radius and variable cross sections. Cast-in-place box girder is usually constructed by a full framing method, and the upper load is transmitted to the ground foundation through the support bearing, as shown in fig. 1 and 2, the two are often constructed by adopting a single bearing system in the traditional construction process, and no connection is generated in the construction process.
In order to fully utilize the existing bent cap support as a basis and build a cast-in-place box girder support on the bent cap support, the technical scheme of the invention provides a support installation scheme which has the advantages of good safety, convenience in installation, cost saving and convenience in quickly constructing the cast-in-place box girder on the upper part of the bent cap.
The invention relates to a bracket mounting method for box girder construction, which comprises the following construction steps:
1. set up bent cap support and construction platform
As shown in fig. 3, the bent cap support is built by a disk buckle type full-hall support, the bent cap construction platform is sequentially composed of longitudinal beams (I14I-shaped steel is arranged in the longitudinal direction of a longitudinal bridge) and transverse beams (10 multiplied by 10cm square timber is arranged in the transverse direction of a transverse bridge), and finally a bent cap bottom template is arranged above the square timber.
2. Adjusting bent cap support
As shown in fig. 4, after the cover beam is poured and the form removal strength is achieved, the cover beam template and the pedal and the square timber of the excess cover beam construction platform except the projection area of the cover beam are removed. And two I14 inverted I-shaped steels are respectively added on the longitudinal beams on the two sides of the cover beam to be used as supports of the support bottom support of the cast-in-place box beam, so that the overall stability of the support is enhanced.
3. Erecting cast-in-situ box girder support
The construction method is characterized in that double rows of cast-in-place box girder supports are erected on the periphery of a cover girder by utilizing a cover girder construction platform and are provided with two cross rods, the cast-in-place box girder supports on two sides of the cover girder are arranged on inverted I14I-shaped steel in a bottom supporting mode, the supports at the end parts of the cover girder are arranged in a double-top supporting mode, and the lower top supporting mode is directly arranged on an I14I-shaped steel longitudinal beam of the cover girder construction platform, as shown in figure 5. After the elevation of the support is adjusted according to a drawing, I14I-beams (4 in total) are placed on the top support of the cast-in-place box girder support in the transverse bridge direction to serve as cross beams of a cast-in-place box girder construction platform, 10 multiplied by 10cm square timber is laid on the cross beams in the longitudinal bridge direction, and finally a bottom die of the cast-in-place box girder is laid.
When the support is erected, the vertical rods of the cover beam support and the cast-in-place box beam support need to be concentric and coaxial, and the overall stress of the support structure is optimized.
In the preferable technical scheme of the invention, the inverted I14I-steel is used for replacing square wood cross beams on the construction platforms at two sides of the cover beam, the square wood cross beams are matched with I14I-steel longitudinal beams of the cover beam construction platform to serve as a bearing structure of a bottom support of a cast-in-place box beam support, and a cast-in-place box beam support is erected on the basis of the cover beam construction platform to complete the construction of the cover beam and the cast-in-place box beam at the upper part of the cover beam.
Compared with the traditional construction process that the cover beam and the cast-in-place box beam use a single bearing structure, the construction process has the following advantages:
(1) when the bent cap is constructed, no anchor ear is used as a bearing structure, so that the complicated assembly and disassembly steps are avoided, material equipment such as the anchor ear and a bolt is not needed, and the construction cost and the construction period are saved;
(2) the cover beam and the cast-in-place box beam on the upper part of the cover beam are constructed by adopting a full-hall support as a bearing structure, so that the conversion of a stress system does not exist, and certain construction cost and construction period are saved;
(3) cast-in-place case roof beam on bent cap and bent cap upper portion all adopts full hall support to carry out the construction as load structure, has increased substantially full hall support's utilization efficiency.
Compared with the traditional method that the capping beam and the cast-in-place box beam are respectively constructed by using the independent bearing system, the technical scheme of the invention saves a large amount of construction cost and construction period, improves the utilization rate of the full-scale support, is convenient to install and disassemble, is clean and environment-friendly, greatly improves the construction efficiency, and achieves the purposes of improving the construction efficiency, economic benefit and construction safety.
In the embodiment of the invention, the mode of fusing the structures of the cover beam and the cast-in-place box beam support is adopted, the cast-in-place box beam support is erected on the existing cover beam support by fully utilizing the existing cover beam support, and the aim of conveniently and quickly constructing the support installation of the cast-in-place box beam on the upper part of the cover beam is achieved, so that the technical effects of convenient installation of the bridge support and cost saving are realized, and the technical problems of low support utilization rate, long construction time and high construction cost caused by the fact that the conventional cover beam and the cast-in-place box beam are erected independently are solved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (3)
1. A support mounting method for box girder construction is characterized by comprising the following steps:
the method comprises the following steps that firstly, a bent cap support and a construction platform are erected, the bent cap support is erected by adopting a disc buckle type full support, the bent cap construction platform sequentially consists of longitudinal beams and cross beams from bottom to top, and a bent cap bottom template is erected on the cross beams;
secondly, adjusting a bent cap support, and removing a bent cap template and a support of a redundant bent cap construction platform except for the projected area of the bent cap after the bent cap is poured and the form removal strength is achieved; two pieces of I14I-shaped steel which are placed upside down are respectively added on the longitudinal beams on the two sides of the cover beam to be used as supports of a support bottom support of the cast-in-place box beam, so that the overall stability of the support is enhanced;
thirdly, erecting a cast-in-place box girder support, erecting double rows of cast-in-place box girder supports around the bent cap by utilizing the bent cap construction platform, and arranging two cross rods together, wherein the cast-in-place box girder supports on two sides of the bent cap are arranged on inverted I14I-shaped steel, the supports at the end parts of the bent cap are arranged in a double-top-support mode, and the top supports at the lower parts are directly arranged on I14I-shaped steel longitudinal beams of the bent cap construction platform; I14I-steel is placed on the top support of the cast-in-place box girder support in the transverse bridge direction to serve as a cross beam of the cast-in-place box girder construction platform, 10 x 10cm square timber is laid on the cross beam in the longitudinal bridge direction, and finally a bottom die of the cast-in-place box girder is laid.
2. The method for installing the bracket for box girder construction according to claim 1, wherein the bent cap bracket and the construction platform are erected, the longitudinal beams are I14I-shaped steel arranged in the longitudinal direction, and the transverse beams are square timber arranged in the transverse direction by 10 x 10 cm.
3. The method for installing the bracket for box girder construction according to any one of claims 1 to 2, wherein I14I-shaped steel is transversely placed on the top support of the cast-in-place box girder bracket as a cross beam of a cast-in-place box girder construction platform, and the method comprises the following steps:
4I 14I-beams are placed on the top support of the cast-in-place box girder support in the transverse bridge direction to serve as the cross beam of the cast-in-place box girder construction platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010733917.8A CN111893892B (en) | 2020-07-27 | 2020-07-27 | Bracket mounting method for box girder construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010733917.8A CN111893892B (en) | 2020-07-27 | 2020-07-27 | Bracket mounting method for box girder construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111893892A CN111893892A (en) | 2020-11-06 |
| CN111893892B true CN111893892B (en) | 2022-01-18 |
Family
ID=73189266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010733917.8A Active CN111893892B (en) | 2020-07-27 | 2020-07-27 | Bracket mounting method for box girder construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111893892B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8006339B1 (en) * | 2009-03-27 | 2011-08-30 | Jeffery W Bennett | Prefabricated articulating pier cap |
| CN107100083A (en) * | 2017-06-23 | 2017-08-29 | 杭州江润科技有限公司 | A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure and construction method |
| CN108149577B (en) * | 2017-12-05 | 2019-11-12 | 上海建工七建集团有限公司 | A kind of steel bracket system and its installation method |
| CN207998793U (en) * | 2017-12-26 | 2018-10-23 | 中交二公局第四工程有限公司 | A kind of multifunctional box shaped steel bracket structure |
| CN208668279U (en) * | 2018-04-30 | 2019-03-29 | 安徽省公路桥梁工程有限公司 | Pier cap beam anchor ear girder steel template system |
| KR102119228B1 (en) * | 2018-05-16 | 2020-06-04 | (주)비에스씨코리아 | Bridge construction method using manufactured pc slab |
| CN208884363U (en) * | 2018-07-27 | 2019-05-21 | 上海华城工程建设管理有限公司 | Access bridge pier L-type bent cap deformed bar Cast-in-place concrete bowl fastening type expires hall falsework |
-
2020
- 2020-07-27 CN CN202010733917.8A patent/CN111893892B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111893892A (en) | 2020-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108560719B (en) | Supporting and mounting method for super-large-span double-layer bidirectional suspension cable structure | |
| CN103243654B (en) | Mounting method for steel anchor beam of cable-stayed bridge and assembly jig and cable bent tower mounting platform used in method | |
| CN109914244B (en) | Weak bracket system suitable for high-tower reinforced concrete combined beam steel structure installation and bottom and top plate concrete pouring and operation method thereof | |
| CN103132766A (en) | Truss for lifting power transmission line tower connecting leg and erection method | |
| CN211340439U (en) | Temporary supporting system for small box girder type hidden cover beam prefabricated on road and bridge | |
| CN203247868U (en) | Large-span steel structure construction temporary supporting frame | |
| CN111997263B (en) | Small-section concrete column and large-section steel structure column conversion structure and construction method | |
| CN111893892B (en) | Bracket mounting method for box girder construction | |
| CN206233656U (en) | Steel frame mill building structure | |
| CN208845309U (en) | The support platform and wind power generating set of tower | |
| CN202831628U (en) | Combined type bailey frame load-bearing shelving for pouring large span concrete beam | |
| CN210917011U (en) | Cable tower structure and bridge | |
| CN213115617U (en) | Reinforcing apparatus of reinforced concrete roof beam | |
| CN201411926Y (en) | Arc beam hoisting structure | |
| CN111188278A (en) | Jig frame structure, jig frame assembly and construction method | |
| CN107558607B (en) | Tower crane system arranged on existing concrete structure and construction method thereof | |
| CN209906223U (en) | Beam gantry crane | |
| CN210420840U (en) | Cantilever light steel pedestrian truss bridge connecting system based on stay cable structure | |
| CN210002576U (en) | connection structure of oblique steel skeleton column and oblique steel skeleton beam | |
| CN203225074U (en) | Advertising board of net rack structure | |
| CN102444202A (en) | H-type steel structure system capable of reducing basement action | |
| CN212561172U (en) | Jig frame structure, jig frame assembly and assembling structure | |
| CN201785764U (en) | Steel pipe concrete structured tower mast foundation | |
| CN220578785U (en) | Large-scale roofing of existing building transformation engineering hangs | |
| CN214497218U (en) | Steel pipe arch assembled double-door type support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |