CN105839540B - Setting method and composition structure of No. 0 section non-welding bracket of rigid frame bridge - Google Patents
Setting method and composition structure of No. 0 section non-welding bracket of rigid frame bridge Download PDFInfo
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- CN105839540B CN105839540B CN201610275631.3A CN201610275631A CN105839540B CN 105839540 B CN105839540 B CN 105839540B CN 201610275631 A CN201610275631 A CN 201610275631A CN 105839540 B CN105839540 B CN 105839540B
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a setting method of a No. 0 section non-welding bracket of a rigid frame bridge, which comprises the following steps: A. pouring a pier body, and reserving bracket setting spaces at two sides of the top of the pier body; B. leveling a fulcrum at a reserved bracket setting space, placing a sand cylinder, and adjusting elevation; C. placing a first layer of main longitudinal beams on a sand cylinder; D. a transverse distribution beam is arranged on the first layer of main longitudinal beams; E. a second layer of main longitudinal beams are arranged on the transverse distribution beams; F. a transverse overload beam is arranged between the second layer of main longitudinal beams; G. arranging a bottom die system and other bracket systems on the transverse overload beam; H. pouring a No. 0 section of the box girder; J. removing all the bracket systems; K. reinforced concrete at the position of the reserved support setting space of the repairing pier body. The method and the structure are used for constructing the No. 0 section, so that the safety risk is reduced, the bridge quality can be ensured, the construction period is shortened, and the construction cost is reduced.
Description
Technical Field
The invention relates to a setting method and a composition structure of a bridge support, in particular to a setting method and a composition structure of a No. 0 section non-welding support of a rigid frame bridge.
Background
Rigid frame bridges generally consist essentially of a number 0 section, a standard section, a cast-in-place section, and a closure section. The first step is to construct the No. 0 section, then construct the standard section and cast-in-situ section, and finally construct the closure section. The current No. 0 section is constructed basically in the following manner in the construction process: welding brackets on the constructed pier columns, erecting longitudinal and transverse distribution beams on the brackets, erecting templates on the longitudinal and transverse distribution beams to form a bracket system, pouring box beams, and finally dismantling the brackets. The construction method has the following problems: the bracket is welded on the embedded part of the pier column, the bracket is cut off when the bracket is dismantled, the bracket is required to be operated at high altitude, the dead time is long, so that the safety in the construction process is reduced, the quality of the bridge can be reduced due to the cutting effect, the working period in the whole construction process is long, and the cost is relatively high. The traditional support structure is not clear enough in stress, so that partial support points are stressed too much, partial support points are stressed less, potential safety hazards are brought, the traditional support structure is complex, partial materials cannot be recycled, and only waste materials can be treated; the bracket is made of more materials, so that the bracket is made for a longer time.
Disclosure of Invention
The invention aims to provide a setting method and a composition structure of a No. 0 section non-welding bracket of a rigid frame bridge. The construction of the No. 0 section by using the method and the structure reduces the safety risk, ensures the bridge quality, has relatively simple composition structure, definite stress and high controllability; all materials can be recycled, so that the method is energy-saving and environment-friendly, shortens the construction period and reduces the construction cost.
The technical scheme of the invention is as follows: the setting method of the No. 0 section non-welding bracket of the rigid frame bridge can be used for construction when the width of the bottom plate of the No. 0 section on the left side and the right side of the pier column is more than or equal to 80cm, and the construction method comprises the following steps:
A. pouring the pier body, and reserving spaces at two sides of the tops of 2 pier columns of the pier body respectively;
B. leveling a fulcrum at the reserved space, placing a sand cylinder, and adjusting elevation;
C. placing more than 2 first layer main stringers on the sand cylinder;
D. a transverse distribution beam is arranged on the first layer of main longitudinal beams;
E. 1 second-layer main longitudinal beams are arranged on the transverse distribution beams;
F. a transverse overload beam is arranged on the second layer of main longitudinal beam;
G. arranging a bottom die and other bracket systems on the transverse overload beam;
H. pouring a No. 0 section of the box girder;
J. removing all the bracket systems;
K. reinforced concrete at the position of the reserved support setting space of the repairing pier body.
In the method for setting the No. 0 section non-welding bracket of the rigid frame bridge, when the pier body is poured in the step A, the embedded part of the operation platform is reserved at the position 50-100 cm below the reserved space of the pier column.
According to the setting method of the No. 0 section non-welding bracket of the rigid frame bridge, the second layer of main longitudinal beam is subjected to out-of-plane stable reinforcement.
A sand cylinder is arranged at the reserved space of the left side and the right side of the top of each 2 pier columns, more than 2 first-layer main longitudinal beams are arranged on the sand cylinder, transverse distribution beams are arranged on the first-layer main longitudinal beams, second-layer main longitudinal beams are arranged on the transverse distribution beams, transverse overload beams are arranged on the second-layer main longitudinal beams on the two sides of each pier column, and bottom dies and other support systems are arranged on the transverse overload beams.
The non-welding bracket for the No. 0 section of the rigid frame bridge comprises a built-in part of an operation platform reserved at a position 50-100 cm below the bottom of a reserved space of the pier column.
The No. 0 section of the rigid frame bridge has the structure without the welding bracket, and the second layer of main longitudinal beam is positioned at the middle position of the first layer of main longitudinal beam.
The invention has the beneficial effects that: the invention has the beneficial effects that: compared with the prior art, the construction method and structure of the invention have the following advantages:
1. the bracket is not required to be erected by erecting the bracket, so that welding and later cutting work of the bracket are not required in the whole construction process, the dead time of workers is shorter, and the safety is enhanced;
2. the bracket is not required to be erected by erecting the bracket, so that the damage to the pier column during welding and cutting the bracket can be avoided, and the bridge construction quality is improved;
3. the bracket erecting and cutting work is not needed, so that the construction period of the bridge is shortened, and meanwhile, the labor expenditure is saved;
4. the bracket is not required to be erected, so that the bracket is not required to be assembled in the early stage, and materials for assembling the bracket are saved;
5. the whole process uses the formed product, so that the use is convenient and simple; all materials can be recycled; temporary workpieces are not used, so that the bridge quality is more ensured;
6. the supporting points in the whole bracket system are stressed clearly, so that the controllability is high and the safety is better.
In general, the method and the structure are used for constructing the No. 0 section, so that the safety risk is reduced, the safety is high, the bridge quality is ensured, meanwhile, the support has a simple structure, the construction period is shortened, the construction cost is reduced, the construction period can be shortened by 15 days in the construction process of the No. 0 section, and the cost can be saved by up to 14 ten thousand.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 shows the structure of the pier body after casting;
reference numerals: 1-pier body, 2-headspace, 3-sand cylinder, 4-first layer main longitudinal beam, 5-transverse distribution beam, 6-second layer main longitudinal beam, 7-transverse overload beam, 8-bottom die, 9-other bracket system and 10-complement reinforced concrete.
Detailed Description
Embodiments of the invention: the setting method of the No. 0 section non-welding bracket of the rigid frame bridge can be used for construction when the width of the bottom plate of the No. 0 section on the left side and the right side of the pier column is more than or equal to 80cm, and the construction method comprises the following steps:
A. firstly, pouring a pier body, wherein the pier body is composed of 2 pier columns, namely an A column and a B column. 1 reserved space is respectively arranged on two sides of the top of each pier stud and is used for erecting a bracket;
B. then leveling supporting points at the reserved space respectively, placing sand cylinders, and adjusting elevation;
C. then more than 2 first layer main stringers are placed side by side on each sand cylinder;
D. next, arranging a plurality of transverse distribution beams on the first layer of main longitudinal beams;
E. the transverse distribution beams on each side of the pier column are respectively provided with 1 second layer of main longitudinal beams;
F. 2 second layer main longitudinal beams on two sides of the pier column are provided with transverse overload beams;
G. setting a bottom die and other bracket systems on the transverse overload beam, wherein the sand cylinder, the first layer of main longitudinal beam, the transverse distribution beam, the second layer of main longitudinal beam, the transverse overload beam, the bottom die and other bracket systems form the whole bracket system in the whole process;
H. pouring a No. 0 section of the box girder;
J. removing all the bracket systems;
K. and then reinforced concrete at the space where the bracket is arranged is reserved through the hanging basket bottom basket repairing pier body. So far, the construction of the whole No. 0 section is finished.
In the whole support process of the support, gravity is distributed to the second-layer main longitudinal beam through the transverse overload beam, then is transmitted to the transverse distribution beam, is effectively distributed to the first-layer main longitudinal beam through the transverse distribution beam, and finally is transmitted to the pier through the sand cylinder. In the whole process, each supporting point is simple in structure and clear in stress, and the safety performance of the whole bracket system is effectively ensured.
And (C) when the pier body is poured, reserving an embedded part of the operation platform on the pier column at the position 50-100 cm below the bottom of the reserved space, so that reinforced concrete of the pier column can be conveniently completed in the middle and later stages.
And in the construction process, the second layer of main longitudinal beam is subjected to out-of-plane stable reinforcement, so that the stability is enhanced.
As shown in figures 1-3, the pier body is composed of 2 pier columns 1, 1 reserved space 2 is reserved on two sides of each pier column 1, a plurality of sand cylinders 3 are placed on the reserved space 2 on each side of each pier column 1, more than 2 first layer main stringers 4 are placed on the sand cylinders 3 on the same side of each pier column 1, then a plurality of transverse distribution beams 5 are arranged on the first layer main stringers 4, then 1 second layer main stringers 6 are arranged on the transverse distribution beams 5 on each side, then transverse overload beams 7 are paved on the 2 second layer main stringers 6, and bottom dies 8 and other bracket systems 9 are arranged on the transverse overload beams 7. The whole process comprises a sand cylinder 3, a first layer of main longitudinal beams 4, a transverse distribution beam 5, a second layer of main longitudinal beams 6, a transverse overload beam 7, a bottom die system 8 and other bracket systems 9. After the brackets are erected, the No. 0 section of the box girder is poured, all the brackets are removed after the No. 0 section is solidified, reinforced concrete at the position of the reserved space 2 is supplemented by the basket bottom basket, and the supplemented reinforced concrete 10 is clearly marked in fig. 3.
The embedded part is arranged on the pier body 1 at the position 50-100 cm below the sand cylinder 3 and is mainly used for setting an operation plane, so that reinforced concrete at the position of the reserved space 2 of the pier body can be conveniently completed in the later period.
The second-layer main longitudinal beam 6 is located at the middle position of the first-layer main longitudinal beam 4 in the bracket erecting process, and the arrangement can enable the gravity born by the second-layer main longitudinal beam 6 to be distributed to the first-layer main longitudinal beam 4 more uniformly through the transverse distribution beam 5. And uneven stress of the first-layer main longitudinal beam 4 is avoided, and the safety performance is influenced.
Claims (5)
1. A method for setting a No. 0 section non-welding bracket of a rigid frame bridge is characterized by comprising the following steps: when the width of the bottom plate of the No. 0 section on the left side and the right side of the pier stud is more than or equal to 80cm, the method can be used for construction, and the setting method comprises the following steps:
A. pouring the pier body, and reserving spaces at two sides of the tops of 2 pier columns of the pier body respectively;
B. leveling a fulcrum at the reserved space, placing a sand cylinder, and adjusting elevation;
C. placing more than 2 first layer main stringers on the sand cylinder;
D. a transverse distribution beam is arranged on the first layer of main longitudinal beams;
E. 1 second-layer main longitudinal beams are arranged on the transverse distribution beams;
F. a transverse overload beam is arranged on the second layer of main longitudinal beam;
G. arranging a bottom die and other bracket systems on the transverse overload beam;
H. pouring a No. 0 section of the box girder;
J. removing all the bracket systems;
K. reinforcing concrete at the reserved bracket setting space of the alignment pier body;
and (C) reserving an embedded part of the operation platform at a position 50-100 cm below the reserved space of the pier column when the pier body is poured in the step A.
2. The method for setting the non-welded bracket of the No. 0 section of the rigid frame bridge, which is characterized in that: and the second layer of main longitudinal beam is subjected to out-of-plane stable reinforcement.
3. A composition structure of a rigid frame bridge No. 0 section non-welded bracket in the method for setting a rigid frame bridge No. 0 section non-welded bracket according to any one of claims 1 to 2, characterized in that: the sand cylinder (3) is respectively arranged in the reserved spaces (2) on the left side and the right side of the top of each pier column (1), more than 2 first-layer main longitudinal beams (4) are arranged on the sand cylinder (3), transverse distribution beams (5) are arranged on the first-layer main longitudinal beams (4), second-layer main longitudinal beams (6) are arranged on the transverse distribution beams (5), transverse overload beams (7) are arranged on the second-layer main longitudinal beams (6) on the two sides of each pier column, and bottom dies (8) and other support systems (9) are arranged on the transverse overload beams (7).
4. The composition structure of the rigid frame bridge No. 0 section non-welding bracket in the setting method of the rigid frame bridge No. 0 section non-welding bracket according to claim 3, which is characterized in that: and an embedded part of an operation platform is reserved at a position 50-100 cm below the reserved space (2) of the pier column (1).
5. The composition structure of the rigid frame bridge No. 0 section non-welding bracket in the setting method of the rigid frame bridge No. 0 section non-welding bracket according to claim 3, which is characterized in that: the second-layer main longitudinal beam (6) is positioned at the middle position of the first-layer main longitudinal beam (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610275631.3A CN105839540B (en) | 2016-04-29 | 2016-04-29 | Setting method and composition structure of No. 0 section non-welding bracket of rigid frame bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610275631.3A CN105839540B (en) | 2016-04-29 | 2016-04-29 | Setting method and composition structure of No. 0 section non-welding bracket of rigid frame bridge |
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| CN105839540A CN105839540A (en) | 2016-08-10 |
| CN105839540B true CN105839540B (en) | 2023-06-13 |
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| CN111563344B (en) * | 2020-05-28 | 2022-07-15 | 广西交科集团有限公司 | Method for safely judging stress of first-layer beam of layered casting concrete |
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| CN102251481A (en) * | 2011-05-06 | 2011-11-23 | 中铁七局集团第一工程有限公司 | Railway pier layered construction method and construction device |
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| DE3403140C1 (en) * | 1984-01-31 | 1985-07-11 | Dyckerhoff & Widmann AG, 8000 München | Structure, in particular bridge structure |
| JP3621292B2 (en) * | 1999-05-27 | 2005-02-16 | 飛島建設株式会社 | Formwork support |
| JP4363542B2 (en) * | 2003-03-04 | 2009-11-11 | 三井住友建設株式会社 | Bridge construction method |
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Effective date of registration: 20190514 Address after: 550001 Layer 4, 20, No. 1 Yan'an Middle Road, Yunyan District, Guiyang City, Guizhou Province Applicant after: GUIZHOU DATONG ROAD BRIDGE ENGINEERING CONSTRUCTION Co.,Ltd. Applicant after: GUIZHOU BRIDGE CONSTRUCTION GROUP Co.,Ltd. Address before: 550001 Hongxiang Building, No. 1 Yan'an Middle Road, Guiyang City, Guizhou Province Applicant before: GUIZHOU BRIDGE CONSTRUCTION GROUP Co.,Ltd. |
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