CN102587286A - Simply supported-continuous construction method for bridge superstructure - Google Patents
Simply supported-continuous construction method for bridge superstructure Download PDFInfo
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- CN102587286A CN102587286A CN2012100866429A CN201210086642A CN102587286A CN 102587286 A CN102587286 A CN 102587286A CN 2012100866429 A CN2012100866429 A CN 2012100866429A CN 201210086642 A CN201210086642 A CN 201210086642A CN 102587286 A CN102587286 A CN 102587286A
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Abstract
The invention relates to a simply supported-continuous construction method for a bridge superstructure, The method comprises the following steps: firstly, prefabricating standard simply supported small box girders in batch; installing temporary steel brackets at two sides of a bracket steel tube column that is erected on each cushion cap, installing a temporary support with adjustable elevation at the tops of the steel brackets, and lifting the prefabricated simply supported small box girders on the temporary supports arranged on the steel brackets; after that, arranging a transverse prestressed reinforcing steel at the cross beam position between the simply supported small box girders, arranging longitudinal hogging moment bundles through reserved holes arranged at the top surfaces of the simply supported small box girders; pouring concrete into cross beams; and stretching and drawing by use of prestress after the concrete reaches the designed strength to form a two-way prestress continuous beam system. The simply supported-continuous construction method provided by the invention has the characteristics that the simply supported box girder has low manufacturing cost and a simple structure and facilitates industrialized production and lifting work, and a continuous bridge is good in integrity and reasonable in stress, so that the disadvantages that inclined section cracks occur at ends of the simply supported box girders, the bridge surface continuation is liable to damage, and the continuous bridge has high requirement on a foundation and supports and has a complex structure and long construction period can be avoided.
Description
Technical field
The present invention relates to a kind of job practices of bridge superstructure, the job practices of especially a kind of bridge top concrete continuous beam.
Technical background
Along with the fast development of China's speedway, particularly more and more general for the speedway of building with overhead form in the city scope, therefore to the also corresponding raising of the bridge construction quality requirement of speedway, bridge Construction Technology more and more receives publicity.And at present; What bridge on highway generally adopted is the form of prefabricated PC concrete plate beam, T beam; This technology has the advantage that the lifting duration is short, cheap, be convenient to batch production production, but simple beam structure is prone to produce crack, sloping section, bridge floor destructible; And adopt balanced cantilever casting method, support cast-in-place method for the bridge of large span; This technology has the advantage of continuous beam good integrity, reasonable stress; But receive ground, ambient influnence big, long in time limit, therefore, in conjunction with above advantage; Explore a kind of not only had the simply supported beam construction period short, but also can combine the method for the advantage of continuous beam good integrity, the permanent of concrete continuous girder construction better guaranteed.
Summary of the invention
The present invention will provide a kind of bridge superstructure freely-supported to become continuous job practices; Main through combining the advantage of simply supported beam duration weak point, beam structure good integrity; Be continuous job practices behind the first freely-supported, guarantee the bridge construction quality, guarantee the permanent of beam structure.
Technical scheme of the present invention is that a kind of bridge superstructure freely-supported becomes continuous job practices, earlier the little case beam of the batch prefabricated freely-supported of standardization; In the carriage steel pipe post both sides of standing on the cushion cap temporary steel carriage is installed then, the temporary support of scalable absolute altitude is installed at steel carriage top, and the little case beam of prefabricated freely-supported is lifted on the temporary support to the steel carriage; Crossbeam location arrangements transverse prestress muscle between the little case beam of freely-supported then; And arrange vertical hogging moment bundle through the little case top surface of the beam of freely-supported preformed hole, and build the crossbeam concrete, treat that concrete reaches design strength after; Carry out prestressed stretch-draw, form two dimension prestressing continuous beam system.
1. the little case beam of prefabricated freely-supported
Adopt the standardization precasting process to come the little case beam of prefabricated freely-supported, comprise the employing set shaped steel formwork; Adopt numerically controlled processing equipment to concentrate the semiproduct reinforcing bar of the little case beam of the prefabricated freely-supported of processing in processing plant; Adopt the auxiliary precast beam cage of reinforcement of making of typing moulding bed;
2. the temporary steel carriage is installed
The carriage steel pipe post on standing on cushion cap, interim portable steel pipe post basis is set in the original ground scope of cushion cap both sides, the temporary steel carriage is installed on portable steel pipe post basis.
3. the steel carriage is made
The steel carriage adopts Φ 580mm steel pipe as the load-bearing steel pipe, arranges laterally and vertically that simultaneously the scissors i iron is as connecting between steel pipe column.
The invention has the beneficial effects as follows:
Job practices of the present invention both had simply supported beam cheap, simple structure, be easy to batch production production, be convenient to the characteristics of lifting operation; The characteristics that have continuous fine strain of millet bridge good integrity, reasonable stress have again overcome the simply supported beam beam-ends and be prone to have produced crack, sloping section, the continuous destructible of bridge floor and continuous girder bridge ground and support requirement height, complex structure, duration such as are grown at shortcoming.
Description of drawings
Fig. 1 is a construction and installation sketch map of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is a steel carrier structure sketch map;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is interim portable steel pipe post basic schematic;
Fig. 6 is that little case beam lifts to temporary steel carriage sketch map;
Fig. 7 is the vertical view of Fig. 6;
Fig. 8 is horizontal longitudinal prestressing strands scheme of installation;
Fig. 9 is a crossbeam concreting sketch map;
Figure 10 be indulge, horizontal prestressed stretch-draw, freely-supported become the continuous structure sketch map.
The specific embodiment
To shown in Figure 10, a kind of bridge superstructure freely-supported becomes continuous job practices like Fig. 1, earlier the little case beam 1 of the prefabricated freely-supported of batch; In carriage steel pipe post 3 both sides of standing on the cushion cap 2 temporary steel carriage 4 is installed then, the temporary support 5 of scalable absolute altitude is installed at temporary steel carriage 4 tops, and the little case beam 1 of prefabricated freely-supported is lifted on the temporary support 5 to the temporary steel carriage 4; Crossbeam location arrangements transverse prestress muscle 8 between the little case beam 1 of freely-supported then; And arrange vertical hogging moment bundle through the little case beam 1 end face preformed hole of freely-supported, and build the crossbeam concrete eight, treat that concrete eight reaches design strength after; Carry out prestressed stretch-draw, form two dimension prestressing continuous beam system.
It is following that bridge superstructure adopts first freely-supported to become the main construction sequence of continuous construction technology:
1. little case beam 1 standardization of freely-supported is prefabricated
On precasting process, require to reach standardization, comprise that little case beam 1 template of freely-supported adopts set shaped steel formwork; Precast beam semiproduct reinforcing bar adopts numerically controlled processing equipment to concentrate processing in processing plant; The precast beam cage of reinforcement adopts the auxiliary making of typing moulding bed; Adopt the special hanger integral hoisting in place after the moulding of the little case beam steel of freely-supported cage to contents such as beam making bench.
2. temporary steel carriage ground 7 (Fig. 5) is handled
The carriage steel pipe post 3 on standing on cushion cap 2, interim portable steel pipe post basis is set in cushion cap 2 both sides original ground scopes, mentality of designing is similar expansion basis, through the bearing capacity of foundation soil test, guarantees that bearing capacity of foundation soil satisfies the load-bearing requirement.
3. temporary steel carriage 4 designs, processing, installation (Fig. 3,4)
Main Φ 580 steel pipes that adopt of temporary steel carriage 4 designs are as the load-bearing steel pipe; Arrange laterally and vertically that simultaneously scissors i iron 6 is as connecting between steel pipe column; 4 processing of temporary steel carriage are carried out in strict accordance with the structure steel fabrication relevant specification, and on-the-spot the installation mainly arranges the 25t mobile crane to carry out.
4. little case beam 1 lifts to temporary steel carriage 4 (Fig. 6,7)
5. crossbeam reinforcing bar, transverse prestress steel bundle, vertically hogging moment bundle 8 installations (Fig. 8), concrete 9 is built (Fig. 9).
6. prestressed stretch-draw, system conversion, the frame that falls (Figure 10).
Bridge superstructure adopt continuous construction technology behind the first freely-supported both had simply supported beam cheap, simple structure, be easy to batch production production, be convenient to the characteristics of lifting operation; The characteristics that have continuous fine strain of millet bridge good integrity, reasonable stress have again overcome the simply supported beam beam-ends and be prone to have produced crack, sloping section, the continuous destructible of bridge floor and continuous girder bridge ground and support requirement height, complex structure, duration such as are grown at shortcoming.
Claims (4)
1. a bridge superstructure freely-supported becomes continuous job practices; It is characterized in that: elder generation is the standardization little case beam of prefabricated freely-supported (1) in batches; In carriage steel pipe post (3) both sides of standing on the cushion cap (2) temporary steel carriage (4) is installed then, the temporary support (5) of scalable absolute altitude is installed at steel carriage (4) top, and the little case beam of prefabricated freely-supported (1) is lifted on the temporary support (5) to the steel carriage; Crossbeam location arrangements transverse prestress muscle (7) between the little case beam of freely-supported (1) then; And arrange vertical hogging moment bundle through the little case top surface of the beam of freely-supported preformed hole, and build crossbeam concrete (8), treat that concrete (8) reaches design strength after; Carry out prestressed stretch-draw, form two dimension prestressing continuous beam system.
2. bridge superstructure freely-supported according to claim 1 becomes continuous job practices, it is characterized in that: the little case beam of said prefabricated freely-supported, and adopt the standardization precasting process to come the little case beam of prefabricated freely-supported, comprise the employing set shaped steel formwork; Adopt numerically controlled processing equipment to concentrate the semiproduct reinforcing bar of the little case beam of the prefabricated freely-supported of processing in processing plant; Adopt the auxiliary precast beam cage of reinforcement of making of typing moulding bed.
3. bridge superstructure freely-supported according to claim 1 becomes continuous job practices; It is characterized in that: said installation temporary steel carriage (4); The carriage steel pipe post (3) on standing on cushion cap (2); Interim portable steel pipe post basis (7) is set in the original ground scope of cushion cap (2) both sides, goes up on portable steel pipe post basis (7) temporary steel carriage (4) is installed.
4. bridge superstructure freely-supported according to claim 1 becomes continuous job practices; It is characterized in that: said steel carriage (4) is made: steel carriage (4) adopts Φ 580mm steel pipe as the load-bearing steel pipe, arranges laterally and vertically that simultaneously scissors i iron (6) is as connecting between steel pipe column.
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| CN2012100866429A CN102587286A (en) | 2012-03-28 | 2012-03-28 | Simply supported-continuous construction method for bridge superstructure |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808371A (en) * | 2012-08-20 | 2012-12-05 | 杨众 | Simply-supported-to-continuous prefabricated integrally-cast superposed continuous bridge and construction method |
| CN102817325A (en) * | 2012-09-13 | 2012-12-12 | 永升建设集团有限公司 | Construction method of simply supported-continuous switching system of negative moment beam prestressed precast box beam |
| CN103015329A (en) * | 2012-12-31 | 2013-04-03 | 中铁第四勘察设计院集团有限公司 | I-section steel girder reinforcement small box girder structure |
| CN103437561A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Simply-supported to continuously-crossly-connected box girder structure |
| CN103586978A (en) * | 2013-09-24 | 2014-02-19 | 沈阳建筑大学 | Steel tube and concrete composite box girder and processing method thereof |
| CN103882813A (en) * | 2014-04-10 | 2014-06-25 | 中铁二局股份有限公司 | Corbel bracket platform for bridge pier and transverse straining beam synchronous construction and construction method of corbel bracket platform |
| CN103882808A (en) * | 2013-12-26 | 2014-06-25 | 浙江金筑交通建设有限公司 | Ramp bridge and main bridge connecting and erecting prefabricated beam supply system and construction method thereof |
| CN104612050A (en) * | 2015-02-09 | 2015-05-13 | 福州大学 | Simply supported girder bridge floor continuous new construction and construction method |
| CN104631301A (en) * | 2015-02-12 | 2015-05-20 | 北京地圣科创建设工程有限公司 | PSC U-type beam bridge and construction method of PSC U-type beam bridge |
| CN105780665A (en) * | 2016-05-06 | 2016-07-20 | 中铁大桥局集团第八工程有限公司 | Two-way adjustable connecting device and construction method thereof |
| CN106012847A (en) * | 2016-05-27 | 2016-10-12 | 中交四公局第二工程有限公司 | Bailey frame support precast hollow slab process |
| CN109911756A (en) * | 2019-04-19 | 2019-06-21 | 福州大学 | The experimental rig and method for transporting and lifting convenient for bridge floor continuous structure test component |
| CN110373970A (en) * | 2019-07-29 | 2019-10-25 | 湖北工业大学 | A kind of overhead road surface underground heat ice-melting structure and its construction method |
| CN111041989A (en) * | 2019-12-12 | 2020-04-21 | 上海市基础工程集团有限公司 | Rapid installation method of prefabricated assembled bridge |
| CN111593675A (en) * | 2020-06-12 | 2020-08-28 | 重庆渝高科技产业(集团)股份有限公司 | Supporting assembly of box girder and construction method of box girder |
| CN112813836A (en) * | 2020-12-31 | 2021-05-18 | 中铁二十局集团第六工程有限公司 | Cast-in-place box girder construction method |
| CN114016423A (en) * | 2021-11-25 | 2022-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Construction method for simply supporting hidden cover beam and then continuously constructing small box beam |
| CN114214955A (en) * | 2021-12-28 | 2022-03-22 | 武船重型工程股份有限公司 | Method for erecting bridge-spanning steel plate girder |
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Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102808371B (en) * | 2012-08-20 | 2016-10-05 | 杨众 | The integral precast overlapping Continuous Bridge of a kind of simple-supported thencontinuous and construction method |
| CN102808371A (en) * | 2012-08-20 | 2012-12-05 | 杨众 | Simply-supported-to-continuous prefabricated integrally-cast superposed continuous bridge and construction method |
| CN102817325A (en) * | 2012-09-13 | 2012-12-12 | 永升建设集团有限公司 | Construction method of simply supported-continuous switching system of negative moment beam prestressed precast box beam |
| CN102817325B (en) * | 2012-09-13 | 2015-05-13 | 永升建设集团有限公司 | Construction method of simply supported-continuous switching system of negative moment beam prestressed precast box beam |
| CN103015329A (en) * | 2012-12-31 | 2013-04-03 | 中铁第四勘察设计院集团有限公司 | I-section steel girder reinforcement small box girder structure |
| CN103437561A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Simply-supported to continuously-crossly-connected box girder structure |
| CN103437561B (en) * | 2013-07-18 | 2015-10-14 | 浙江中隧桥波形钢腹板有限公司 | Freely-supported turns continuous interconnection box-beam structure |
| CN103586978B (en) * | 2013-09-24 | 2015-11-25 | 沈阳建筑大学 | Steel pipe and concrete folding case beam and processing method thereof |
| CN103586978A (en) * | 2013-09-24 | 2014-02-19 | 沈阳建筑大学 | Steel tube and concrete composite box girder and processing method thereof |
| CN103882808A (en) * | 2013-12-26 | 2014-06-25 | 浙江金筑交通建设有限公司 | Ramp bridge and main bridge connecting and erecting prefabricated beam supply system and construction method thereof |
| CN103882808B (en) * | 2013-12-26 | 2016-03-09 | 浙江金筑交通建设有限公司 | Ramp bridge and main line bridge join the construction method across erecting beam support system |
| CN103882813B (en) * | 2014-04-10 | 2016-02-03 | 中铁二局工程有限公司 | For calf support platform and the building method thereof of bridge pier and straining beam synchronous construction |
| CN103882813A (en) * | 2014-04-10 | 2014-06-25 | 中铁二局股份有限公司 | Corbel bracket platform for bridge pier and transverse straining beam synchronous construction and construction method of corbel bracket platform |
| CN104612050A (en) * | 2015-02-09 | 2015-05-13 | 福州大学 | Simply supported girder bridge floor continuous new construction and construction method |
| CN104631301A (en) * | 2015-02-12 | 2015-05-20 | 北京地圣科创建设工程有限公司 | PSC U-type beam bridge and construction method of PSC U-type beam bridge |
| CN105780665B (en) * | 2016-05-06 | 2017-10-27 | 中铁大桥局集团第八工程有限公司 | Two-way adjustable connector and its construction method |
| CN105780665A (en) * | 2016-05-06 | 2016-07-20 | 中铁大桥局集团第八工程有限公司 | Two-way adjustable connecting device and construction method thereof |
| CN106012847B (en) * | 2016-05-27 | 2018-01-02 | 中交四公局第二工程有限公司 | Bailey bracket supports precast hollow slab technique |
| CN106012847A (en) * | 2016-05-27 | 2016-10-12 | 中交四公局第二工程有限公司 | Bailey frame support precast hollow slab process |
| CN109911756A (en) * | 2019-04-19 | 2019-06-21 | 福州大学 | The experimental rig and method for transporting and lifting convenient for bridge floor continuous structure test component |
| CN110373970A (en) * | 2019-07-29 | 2019-10-25 | 湖北工业大学 | A kind of overhead road surface underground heat ice-melting structure and its construction method |
| CN111041989A (en) * | 2019-12-12 | 2020-04-21 | 上海市基础工程集团有限公司 | Rapid installation method of prefabricated assembled bridge |
| CN111593675A (en) * | 2020-06-12 | 2020-08-28 | 重庆渝高科技产业(集团)股份有限公司 | Supporting assembly of box girder and construction method of box girder |
| CN112813836A (en) * | 2020-12-31 | 2021-05-18 | 中铁二十局集团第六工程有限公司 | Cast-in-place box girder construction method |
| CN114016423A (en) * | 2021-11-25 | 2022-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Construction method for simply supporting hidden cover beam and then continuously constructing small box beam |
| CN114214955A (en) * | 2021-12-28 | 2022-03-22 | 武船重型工程股份有限公司 | Method for erecting bridge-spanning steel plate girder |
| CN114214955B (en) * | 2021-12-28 | 2024-03-22 | 武船重型工程股份有限公司 | Method for erecting bridge-crossing steel plate girder |
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Application publication date: 20120718 |