CN114016423A - Construction method for simply supporting hidden cover beam and then continuously constructing small box beam - Google Patents
Construction method for simply supporting hidden cover beam and then continuously constructing small box beam Download PDFInfo
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- CN114016423A CN114016423A CN202111415254.6A CN202111415254A CN114016423A CN 114016423 A CN114016423 A CN 114016423A CN 202111415254 A CN202111415254 A CN 202111415254A CN 114016423 A CN114016423 A CN 114016423A
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- small box
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- box girder
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- 238000010276 construction Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 5
- 238000009417 prefabrication Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
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Classifications
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A construction method for simply supporting a hidden cover beam and then continuously constructing small box beams relates to the field of bridges and comprises the steps of preparing pile foundations, bearing platforms and pier columns; setting up a temporary support on the top of the bearing platform; erecting the small box girder onto the temporary support; hoisting hidden bent cap steel bars in place, lengthening longitudinal steel bars at the end part of the small box girder, installing steel bundles, pouring concrete and tensioning prestressed steel bundles; and (5) dismantling the temporary supports, and constructing a bridge deck system to finish the bridge construction. The construction method for the hidden bent cap after simply supporting and then continuously constructing the small box girder provided by the embodiment can optimize the connection structure of the hidden bent cap, the reinforcing steel bar and the steel beam, improve the construction conditions of the hidden bent cap, improve the factory rate construction and improve the construction quality.
Description
Technical Field
The invention relates to the field of bridges, in particular to a construction method for simply supporting a hidden cover beam and then continuously constructing small box beams.
Background
The hidden type bent cap is a novel bridge structure form with the advantages that the structure height is low, a beam body can be prefabricated in an industrial mode, the structural integrity is good, and a stress system is close to that of a cast-in-place box beam, so that the hidden type bent cap is worthy of popularization in modern urban bridge construction with high landscape requirements. The invention aims to provide a novel structure of a hidden bent cap of a simply-supported and continuous small box girder so as to improve a construction method and improve construction quality.
Disclosure of Invention
The invention aims to provide a construction method for simply supporting and then continuously constructing small box girders by using hidden cover girders, which aims to solve the problems.
The embodiment of the invention is realized by the following steps:
in one aspect of the embodiments of the present invention, a method for constructing a hidden cover beam simply supported and then continuously constructed into a small box beam is provided, which includes the following steps:
preparing a pile foundation, a bearing platform and a pier stud;
setting up a temporary support on the top of the bearing platform;
erecting the small box girder onto the temporary support;
hoisting hidden bent cap steel bars in place, lengthening longitudinal steel bars at the end part of the small box girder, installing steel bundles, pouring concrete and tensioning prestressed steel bundles;
and (5) dismantling the temporary supports, and constructing a bridge deck system to finish the bridge construction.
Optionally, the pile foundation, the bearing platform and the pier stud are all prepared by field construction.
Optionally, the box girders are prepared by a prefabrication plant.
Optionally, the preparation of the small box girder by a prefabrication factory is performed in synchronization with the preparation of the pile foundation, the bearing platform and the pier stud.
Optionally, the box girders are transported to the site while temporary supports are set up on top of the cap.
Optionally, joints for mechanical connection are reserved at the end parts of the precast beams of the small box girders. The construction method for the hidden bent cap after simply supporting and then continuously constructing the small box girder provided by the embodiment can optimize the connection structure of the hidden bent cap, the reinforcing steel bar and the steel beam, improve the construction conditions of the hidden bent cap, improve the factory rate construction and improve the construction quality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the components of the first-connected 3X 30m hidden bent cap of the present invention, which is simply supported and then connected with the main components of the small box girder;
FIG. 2 is a schematic view of a construction process of a hidden bent cap after simply supporting and then continuously forming a small box girder according to an embodiment of the invention;
FIG. 3 is a schematic diagram of erecting a prefabricated small box girder on a temporary buttress according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a reinforcement cage with a hidden bent cap being installed in place on site according to an embodiment of the present invention;
FIG. 5 is a schematic view of the embodiment of the present invention illustrating the installation of hogging moment steel bundles and hidden bent cap steel bundles in the elongated precast beam end reinforcing steel bars;
FIG. 6 is a schematic diagram of the method for pouring hidden cover beam concrete and tensioning longitudinal and transverse steel bundles in batches according to the embodiment of the invention;
fig. 7 is a schematic view of the main structure after the support is removed according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 7, the present embodiment provides a construction method for simply supporting a hidden canopy beam and then continuously constructing small box beams, including the following steps:
preparing a pile foundation, a bearing platform and a pier stud;
setting up a temporary support on the top of the bearing platform;
erecting the small box girder onto the temporary support;
hoisting hidden bent cap steel bars in place, lengthening longitudinal steel bars at the end part of the small box girder, installing steel bundles, pouring concrete and tensioning prestressed steel bundles;
and (5) dismantling the temporary supports, and constructing a bridge deck system to finish the bridge construction. Wherein, the pile foundation, the bearing platform and the pier stud are all prepared by field construction. Wherein the small box girder is prepared by a prefabrication plant. The small box girders are prepared by a prefabricating factory and are synchronously prepared with the pile foundation, the bearing platform and the pier stud. And when a temporary support is erected on the top of the bearing platform, the small box girder is transported to the site. And joints for mechanical connection are reserved at the end parts of the precast beams of the small box girders.
Referring to fig. 3 to fig. 7 in detail, the method for implementing the hidden bent cap of the present invention is further described by taking the middle pier as an example:
and (4) erecting a temporary buttress, installing a beam template, and erecting the prefabricated small box beam on the temporary buttress.
And (4) processing a reinforcement cage of the hidden bent cap, and installing in place on site.
And (3) lengthening the reinforcing steel bars at the end parts of the precast beams through mechanical connection (straight thread sleeves), and installing the hogging moment steel bundles and the hidden bent cap beam steel bundles.
And (4) pouring hidden cover beam concrete, and tensioning longitudinal and transverse steel bundles in batches.
And (5) dismantling the support, and finishing construction of the main body structure.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A construction method for simply supporting a hidden cover beam and then continuously constructing small box beams is characterized by comprising the following steps:
preparing a pile foundation, a bearing platform and a pier stud;
setting up a temporary support on the top of the bearing platform;
erecting the small box girder onto the temporary support;
hoisting hidden bent cap steel bars in place, lengthening longitudinal steel bars at the end part of the small box girder, installing steel bundles, pouring concrete and tensioning prestressed steel bundles;
and (5) dismantling the temporary supports, and constructing a bridge deck system to finish the bridge construction.
2. The construction method of the hidden canopy beam simply supported and then continuously provided with the small box girders according to claim 1, wherein the pile foundation, the bearing platform and the pier stud are all prepared by field construction.
3. The method for constructing a simply supported and then continuous box girder of a hidden canopy according to claim 1, wherein the box girder is prepared by a prefabrication factory.
4. The construction method of the hidden canopy beam of claim 3, wherein the fabrication of the small box beam from a prefabrication plant is performed simultaneously with the fabrication of the pile foundation, the cap and the pier stud.
5. The construction method of the hidden canopy beam of claim 3, wherein the small box beam is transported to the site when the temporary support is built on top of the bearing platform.
6. The construction method of the hidden cover beam simply supported and then continuously connected small box beams as claimed in claim 4 or 5, wherein joints for mechanical connection are reserved at the end parts of the precast beams of the small box beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415254.6A CN114016423A (en) | 2021-11-25 | 2021-11-25 | Construction method for simply supporting hidden cover beam and then continuously constructing small box beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415254.6A CN114016423A (en) | 2021-11-25 | 2021-11-25 | Construction method for simply supporting hidden cover beam and then continuously constructing small box beam |
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| Publication Number | Publication Date |
|---|---|
| CN114016423A true CN114016423A (en) | 2022-02-08 |
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| CN202111415254.6A Pending CN114016423A (en) | 2021-11-25 | 2021-11-25 | Construction method for simply supporting hidden cover beam and then continuously constructing small box beam |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090116606A (en) * | 2008-12-04 | 2009-11-11 | 주식회사 인터컨스텍 | A method of making the simple bridge composed of girders with concrete slab deck continuous |
| CN102086630A (en) * | 2010-10-14 | 2011-06-08 | 东南大学 | Method for constructing continuous U-shaped beams |
| CN102587286A (en) * | 2012-03-28 | 2012-07-18 | 上海市第四建筑有限公司 | Simply supported-continuous construction method for bridge superstructure |
| CN202787046U (en) * | 2012-09-14 | 2013-03-13 | 永升建设集团有限公司 | Negative moment beam pre-stressed precast box girder connecting structure |
| CN103938546A (en) * | 2013-01-23 | 2014-07-23 | 上海市城市建设设计研究总院 | Simple-supported continuous construction method and structure thereof |
| CN208088108U (en) * | 2018-01-23 | 2018-11-13 | 上海市政工程设计研究总院（集团）有限公司 | A kind of Simply supported non-uniform bridge structure construction |
| CN109989330A (en) * | 2017-12-29 | 2019-07-09 | 比亚迪股份有限公司 | Continous way track and its erection method |
| CN110485278A (en) * | 2019-08-29 | 2019-11-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of half stealth of falling T bent cap construction |
| CN110747746A (en) * | 2019-10-21 | 2020-02-04 | 宁波市政工程建设集团股份有限公司 | Temporary supporting system for small box girder type hidden cover beam prefabricated on road and bridge and construction method thereof |
| CN110747761A (en) * | 2019-10-21 | 2020-02-04 | 宁波市政工程建设集团股份有限公司 | Dismantling construction method and tool for temporary supporting system of small box girder type hidden cover beam of road and bridge prefabricated |
| CN110939051A (en) * | 2019-12-12 | 2020-03-31 | 成都轨道建设管理有限公司 | Subway hidden cover beam construction method |
| CN113652966A (en) * | 2021-07-13 | 2021-11-16 | 宁波市政工程建设集团股份有限公司 | Construction method of full-prefabricated assembly type concrete beam type bridge structure system |
-
2021
- 2021-11-25 CN CN202111415254.6A patent/CN114016423A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20090116606A (en) * | 2008-12-04 | 2009-11-11 | 주식회사 인터컨스텍 | A method of making the simple bridge composed of girders with concrete slab deck continuous |
| CN102086630A (en) * | 2010-10-14 | 2011-06-08 | 东南大学 | Method for constructing continuous U-shaped beams |
| CN102587286A (en) * | 2012-03-28 | 2012-07-18 | 上海市第四建筑有限公司 | Simply supported-continuous construction method for bridge superstructure |
| CN202787046U (en) * | 2012-09-14 | 2013-03-13 | 永升建设集团有限公司 | Negative moment beam pre-stressed precast box girder connecting structure |
| CN103938546A (en) * | 2013-01-23 | 2014-07-23 | 上海市城市建设设计研究总院 | Simple-supported continuous construction method and structure thereof |
| CN109989330A (en) * | 2017-12-29 | 2019-07-09 | 比亚迪股份有限公司 | Continous way track and its erection method |
| CN208088108U (en) * | 2018-01-23 | 2018-11-13 | 上海市政工程设计研究总院（集团）有限公司 | A kind of Simply supported non-uniform bridge structure construction |
| CN110485278A (en) * | 2019-08-29 | 2019-11-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of half stealth of falling T bent cap construction |
| CN110747746A (en) * | 2019-10-21 | 2020-02-04 | 宁波市政工程建设集团股份有限公司 | Temporary supporting system for small box girder type hidden cover beam prefabricated on road and bridge and construction method thereof |
| CN110747761A (en) * | 2019-10-21 | 2020-02-04 | 宁波市政工程建设集团股份有限公司 | Dismantling construction method and tool for temporary supporting system of small box girder type hidden cover beam of road and bridge prefabricated |
| CN110939051A (en) * | 2019-12-12 | 2020-03-31 | 成都轨道建设管理有限公司 | Subway hidden cover beam construction method |
| CN113652966A (en) * | 2021-07-13 | 2021-11-16 | 宁波市政工程建设集团股份有限公司 | Construction method of full-prefabricated assembly type concrete beam type bridge structure system |
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