CN111691314A - Steel box girder step type multi-point pushing installation method - Google Patents
Steel box girder step type multi-point pushing installation method Download PDFInfo
- Publication number
- CN111691314A CN111691314A CN202010544523.8A CN202010544523A CN111691314A CN 111691314 A CN111691314 A CN 111691314A CN 202010544523 A CN202010544523 A CN 202010544523A CN 111691314 A CN111691314 A CN 111691314A
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- steel box
- box girder
- support
- pushing
- abutment
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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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a step type multipoint pushing installation method for a steel box girder, wherein the steel box girder adopts a scheme of factory integral manufacture and prefabricated site on-site assembly, the hoisting operation intensity is reduced, the construction efficiency, the operation precision and the safety factor are improved, the safety is high, the step type multipoint pushing method is adopted for pushing construction, a pushing system, a temporary support system and a guide beam are used for guiding, the spanning type integral installation of the large-span box girder is realized, the heavy-load mechanical investment is avoided, the high-altitude hoisting safety hazard of an overlong component is reduced, a displacement sensor, a static level gauge and a stress sensor are arranged in the construction process, the data of transverse displacement, longitudinal displacement, stress, sinking and the like of a temporary buttress are monitored in real time, and the construction process is monitored and early warned in an omnibearing manner; the beam falling scheme of alternate falling support and abutment support is adopted, so that the construction cost is reduced, the construction safety is improved, and the construction site can be fully saved.
Description
Technical Field
The invention belongs to the technical field of bridge construction steel box girder construction, and particularly relates to a step-pitch type multipoint pushing installation method for a steel box girder.
Background
When a bridge is erected in an area with large traffic flow, the normal traffic of a road is considered, the erection space is small, the bridge cannot be installed by using a conventional hoisting operation or a support method, the construction difficulty is high, the bridge pushing method has the advantages of small occupied area, uninterrupted construction process, good structural integrity, no influence on the existing traffic condition, no noise, high construction speed and the like in the construction process, so that the bridge is rapidly popularized and applied, and the application range of the pushing method is wider and wider along with the continuous perfection of modern pushing equipment.
Disclosure of Invention
The invention aims to provide a step type multi-point pushing installation method for a steel box girder.
The technical problems to be solved by the invention are as follows:
when bridge frame facilities are carried out on a road section with large traffic flow, due to the fact that the field is limited, large facilities cannot be supported for erection construction, the road section needs to be sealed for a long time in the traditional construction method, and smooth operation of traffic is not facilitated.
The purpose of the invention can be realized by the following technical scheme:
a steel box girder step type multipoint pushing installation method comprises the following steps:
first, the fabrication and assembly of steel box girders
The steel box girder is manufactured in sections in a factory, is disassembled and conveyed to a construction site after being pre-assembled in the factory, and is used for secondary assembly on the site;
second, positioning the steel box girder
S1, arranging pushing concrete platforms, arranging temporary supports on the pushing concrete platforms, and fixedly installing a set of pushing equipment on the top of each temporary support, wherein each pushing equipment comprises a jacking oil cylinder, a longitudinal moving oil cylinder and a transverse moving oil cylinder, the jacking oil cylinder is used for realizing vertical jacking, the longitudinal moving oil cylinder is used for realizing longitudinal driving, and the transverse moving oil cylinder is used for realizing transverse driving;
s2, fixedly connecting a guide beam with a steel box beam, wherein the front end of the first pushing section of the steel box beam is provided with the guide beam, and the bottom of the front end of the guide beam is provided with an inclined plane which inclines upwards and forwards;
s3, arranging a displacement sensor, a static level gauge and a stress sensor on each temporary support, detecting the transverse and longitudinal displacement, stress and settlement data of the temporary buttress after stress, and transmitting the data to a monitoring device end;
s4, after the steel box girder is conveyed to a corresponding position through the pushing equipment, the guide beam is removed;
thirdly, beam falling
SS1, arranging an abutment support at the abutment, arranging a support on the temporary support, fixedly installing lifting rings on the steel box girder and the temporary support, and installing a chain hoist on the steel box girder;
SS2, descending a jacking oil cylinder in jacking equipment on the temporary support to enable the abutment support to bear force, driving a chain hoist to enable the steel box girder to bear upward force, cutting the connecting position of the support root of the support, wherein the cutting length is 10-20 cm;
SS3, driving a chain hoist to move the steel box girder downwards, enabling the bottom of the support to stably fall on the temporary support, enabling a jacking oil cylinder in jacking equipment on the abutment to ascend to enable the abutment support to be separated from the bottom of the steel box girder, then cutting the abutment support, wherein the cutting length is equal to that of the support, and the cutting position of the abutment support is that the cutting starts from the end part of the abutment support;
the SS4 and the jacking oil cylinder on the bridge abutment descend to enable the steel box girder to fall on the bridge abutment support;
and SS5, repeating the steps from SS2 to SS4 until the abutment support is completely cut, and completely dropping the steel box girder on the abutment to finish the girder dropping operation.
As a further scheme of the invention, in step S3, when the monitoring device collects the lateral and longitudinal displacement, stress and settlement data of the temporary buttress in real time and is greater than the preset values, the stress and deformation data of the temporary buttress at each stage are measured in the bridge pushing process, the difference between the deformation of the temporary buttress at each construction stage and the design theoretical calculated value is analyzed at any time, and when the lateral and longitudinal displacement, stress and settlement data of the temporary buttress are abnormal, the pushing system stops working and traffic is closed.
As a further scheme of the present invention, the method for transporting the steel box girder by the pushing device in step S4 comprises:
jacking an oil jacking cylinder of the jacking equipment upwards to jack the steel box girder far away from the temporary support, driving the steel box girder to move longitudinally by a longitudinal moving cylinder to push the steel box girder forward by a stroke, and adjusting the transverse position of the steel box girder by a transverse moving cylinder to avoid the situation that the position of the steel box girder deviates in the transmission process to influence the subsequent installation;
and a jacking oil cylinder of the jacking equipment moves downwards to enable the steel box girder to fall on the temporary support to complete one-time pushing, and the steel box girder is circularly pushed for multiple times until the steel box girder moves to the position above the corresponding abutment.
As a further scheme of the invention, in the first step, the steel outer die of the bridge anti-collision guardrail and the steel box girder are welded into a whole before the pushing construction is carried out.
The invention has the beneficial effects that:
according to the invention, the steel box girder adopts a scheme of integrally manufacturing in a factory and assembling in a prefabricated site on site, the hoisting operation intensity is reduced, the construction efficiency, the operation precision and the safety factor are improved, the safety is high, the step-type multipoint jacking construction is adopted, the jacking system, the temporary support system and the guide beam are used for guiding, the spanning type integral installation of the large-span box girder is realized, the investment of large machinery is avoided, the potential safety hazard of high-altitude hoisting of an overlong heavy-load component is reduced, a displacement sensor, a static level gauge and a stress sensor are arranged in the construction process, the data of transverse displacement, longitudinal displacement, stress, sinking and the like of the temporary buttress are monitored in real time, and the construction process is comprehensively monitored and. The beam falling scheme of alternate falling support and abutment support is adopted, so that the construction cost is reduced, the construction safety is improved, and the construction site can be fully saved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
A steel box girder step type multipoint pushing installation method comprises the following steps:
first, the fabrication and assembly of steel box girders
The steel box girder is manufactured in sections in a factory, is disassembled and conveyed to a construction site after being pre-assembled in the factory, and is used for secondary assembly on the site;
second, positioning the steel box girder
S1, arranging pushing concrete platforms, arranging temporary supports on the pushing concrete platforms, and fixedly installing a set of pushing equipment on the top of each temporary support, wherein each pushing equipment comprises a jacking oil cylinder, a longitudinal moving oil cylinder and a transverse moving oil cylinder, the jacking oil cylinder is used for realizing vertical jacking, the longitudinal moving oil cylinder is used for realizing longitudinal driving, and the transverse moving oil cylinder is used for realizing transverse driving;
s2, fixedly connecting a guide beam with a steel box beam, wherein the front end of the first pushing section of the steel box beam is provided with the guide beam, and the bottom of the front end of the guide beam is provided with an inclined plane which inclines upwards and forwards;
s3, arranging a displacement sensor, a static level gauge and a stress sensor on each temporary support, detecting the transverse and longitudinal displacement, stress and settlement data of the temporary buttress after stress, and transmitting the data to a monitoring device end;
s4, after the steel box girder is conveyed to a corresponding position through the pushing equipment, the guide beam is removed;
thirdly, beam falling
SS1, arranging an abutment support at the abutment, arranging a support on the temporary support, fixedly installing lifting rings on the steel box girder and the temporary support, and installing a chain hoist on the steel box girder;
SS2, descending a jacking oil cylinder in jacking equipment on the temporary support to enable the abutment support to bear force, driving a chain hoist to enable the steel box girder to bear upward force, cutting the connecting position of the support root of the support, wherein the cutting length is 10-20 cm;
SS3, driving a chain hoist to move the steel box girder downwards, enabling the bottom of the support to stably fall on the temporary support, enabling a jacking oil cylinder in jacking equipment on the abutment to ascend to enable the abutment support to be separated from the bottom of the steel box girder, then cutting the abutment support, wherein the cutting length is equal to that of the support, and the cutting position of the abutment support is that the cutting starts from the end part of the abutment support;
the SS4 and the jacking oil cylinder on the bridge abutment descend to enable the steel box girder to fall on the bridge abutment support;
and SS5, repeating the steps from SS2 to SS4 until the abutment support is completely cut, and completely dropping the steel box girder on the abutment to finish the girder dropping operation.
In step S3, when the monitoring device collects the data of lateral and longitudinal displacement, stress and settlement of the temporary buttress in real time and is greater than the preset value, the stress and deformation data of the temporary buttress at each stage are measured in the bridge pushing process, the difference between the deformation of the temporary buttress at each construction stage and the design theoretical calculation value is analyzed at any time, and when the lateral and longitudinal displacement, stress and settlement data of the temporary buttress are abnormal, the pushing system stops working and traffic is closed.
The pushing equipment comprises a jacking oil cylinder, a longitudinal moving oil cylinder and a transverse moving oil cylinder,
the method for conveying the steel box girder by the pushing equipment in the step S4 comprises the following steps:
jacking an oil jacking cylinder of the jacking equipment upwards to jack the steel box girder far away from the temporary support, driving the steel box girder to move longitudinally by a longitudinal moving cylinder to push the steel box girder forward by a stroke, and adjusting the transverse position of the steel box girder by a transverse moving cylinder to avoid the situation that the position of the steel box girder deviates in the transmission process to influence the subsequent installation;
and a jacking oil cylinder of the jacking equipment moves downwards to enable the steel box girder to fall on the temporary support to complete one-time pushing, and the steel box girder is circularly pushed for multiple times until the steel box girder moves to the position above the corresponding abutment.
In the first step, in order to prevent the risk of high-altitude falling objects in the pushing and bridge deck system construction process, the steel outer die of the bridge anti-collision guardrail and the steel box girder are welded into a whole before the pushing construction is carried out.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (4)
1. A steel box girder step type multipoint pushing installation method is characterized by comprising the following steps:
first, the fabrication and assembly of steel box girders
The steel box girder is manufactured in sections in a factory, is disassembled and conveyed to a construction site after being pre-assembled in the factory, and is used for secondary assembly on the site;
second, positioning the steel box girder
S1, arranging pushing concrete platforms, arranging temporary supports on the pushing concrete platforms, and fixedly installing a set of pushing equipment on the top of each temporary support, wherein each pushing equipment comprises a jacking oil cylinder, a longitudinal moving oil cylinder and a transverse moving oil cylinder, the jacking oil cylinder is used for realizing vertical jacking, the longitudinal moving oil cylinder is used for realizing longitudinal driving, and the transverse moving oil cylinder is used for realizing transverse driving;
s2, fixedly connecting a guide beam with a steel box beam, wherein the front end of the first pushing section of the steel box beam is provided with the guide beam, and the bottom of the front end of the guide beam is provided with an inclined plane which inclines upwards and forwards;
s3, arranging a displacement sensor, a static level gauge and a stress sensor on each temporary support, detecting the transverse and longitudinal displacement, stress and settlement data of the temporary buttress after stress, and transmitting the data to a monitoring device end;
s4, after the steel box girder is conveyed to a corresponding position through the pushing equipment, the guide beam is removed;
thirdly, beam falling
SS1, arranging an abutment support at the abutment, arranging a support on the temporary support, fixedly installing lifting rings on the steel box girder and the temporary support, and installing a chain hoist on the steel box girder;
SS2, descending a jacking oil cylinder in jacking equipment on the temporary support to enable the abutment support to bear force, driving a chain hoist to enable the steel box girder to bear upward force, cutting the connecting position of the support root of the support, wherein the cutting length is 10-20 cm;
SS3, driving a chain hoist to move the steel box girder downwards, enabling the bottom of the support to stably fall on the temporary support, enabling a jacking oil cylinder in jacking equipment on the abutment to ascend to enable the abutment support to be separated from the bottom of the steel box girder, then cutting the abutment support, wherein the cutting length is equal to that of the support, and the cutting position of the abutment support is that the cutting starts from the end part of the abutment support;
the SS4 and the jacking oil cylinder on the bridge abutment descend to enable the steel box girder to fall on the bridge abutment support;
and SS5, repeating the steps from SS2 to SS4 until the abutment support is completely cut, and completely dropping the steel box girder on the abutment to finish the girder dropping operation.
2. The steel box girder step-pitch multipoint pushing installation method of claim 1, wherein in step S3, when the monitoring device collects the horizontal and longitudinal displacement, stress and settlement data of the temporary buttress in real time and is larger than a preset value, the stress and deformation data of the temporary buttress at each stage are measured in the bridge pushing process, the difference between the deformation of the temporary buttress at each construction stage and the calculated value of the design theory is analyzed at any time, and when the horizontal and longitudinal displacement, stress and settlement data of the temporary buttress are abnormal, the pushing system stops working and traffic is closed.
3. The steel box girder step-type multipoint pushing installation method as claimed in claim 1, wherein the method for transporting the steel box girder by the pushing equipment in the step S4 is as follows:
jacking an oil jacking cylinder of the jacking equipment upwards to jack the steel box girder far away from the temporary support, driving the steel box girder to move longitudinally by a longitudinal moving cylinder to push the steel box girder forward by a stroke, and adjusting the transverse position of the steel box girder by a transverse moving cylinder to avoid the situation that the position of the steel box girder deviates in the transmission process to influence the subsequent installation;
and a jacking oil cylinder of the jacking equipment moves downwards to enable the steel box girder to fall on the temporary support to complete one-time pushing, and the steel box girder is circularly pushed for multiple times until the steel box girder moves to the position above the corresponding abutment.
4. The step type multipoint pushing installation method for the steel box girder as claimed in claim 1, wherein in the first step, the bridge anti-collision guardrail steel outer die and the steel box girder are welded into a whole before pushing construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010544523.8A CN111691314A (en) | 2020-06-15 | 2020-06-15 | Steel box girder step type multi-point pushing installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010544523.8A CN111691314A (en) | 2020-06-15 | 2020-06-15 | Steel box girder step type multi-point pushing installation method |
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| CN111691314A true CN111691314A (en) | 2020-09-22 |
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| CN202010544523.8A Pending CN111691314A (en) | 2020-06-15 | 2020-06-15 | Steel box girder step type multi-point pushing installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021224A (en) * | 2021-05-26 | 2021-06-25 | 常州市新创智能科技有限公司 | Train body position adjusting and positioning tool and using method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587291A (en) * | 2012-03-27 | 2012-07-18 | 中交四航局第一工程有限公司 | Walking type multipoint pushing construction method and walking type multipoint pushing construction system for steel box girder |
| KR20150047058A (en) * | 2013-10-23 | 2015-05-04 | 브이에스엘코리아 주식회사 | Incremental launching automation system of the bridge upper structure |
| CN105568866A (en) * | 2015-12-31 | 2016-05-11 | 中铁二十局集团第六工程有限公司 | Incremental launching construction method for large-span steel box girder spanning constructed road |
| CN105696469A (en) * | 2015-11-16 | 2016-06-22 | 中铁四局集团有限公司 | Incremental launching installation construction method for large-span bidirectional longitudinal slope steel box girder of super-large bridge |
| CN106638322A (en) * | 2016-12-28 | 2017-05-10 | 海波重型工程科技股份有限公司 | Steel box beam pushing and deviation correcting method for walking type multiple-point continuous pushing technique |
| CN108457188A (en) * | 2018-01-16 | 2018-08-28 | 闫相明 | A kind of walking incremental launching construction by multipoint jacking construction |
| CN109629440A (en) * | 2019-01-15 | 2019-04-16 | 中铁局集团有限公司 | Steel box-girder push construction method based on walking three-dimensional hydraulic incremental launching device |
| CN111188283A (en) * | 2020-03-05 | 2020-05-22 | 陕西路桥集团有限公司 | Method for integrally and synchronously jacking and falling steel bridge |
-
2020
- 2020-06-15 CN CN202010544523.8A patent/CN111691314A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587291A (en) * | 2012-03-27 | 2012-07-18 | 中交四航局第一工程有限公司 | Walking type multipoint pushing construction method and walking type multipoint pushing construction system for steel box girder |
| KR20150047058A (en) * | 2013-10-23 | 2015-05-04 | 브이에스엘코리아 주식회사 | Incremental launching automation system of the bridge upper structure |
| CN105696469A (en) * | 2015-11-16 | 2016-06-22 | 中铁四局集团有限公司 | Incremental launching installation construction method for large-span bidirectional longitudinal slope steel box girder of super-large bridge |
| CN105568866A (en) * | 2015-12-31 | 2016-05-11 | 中铁二十局集团第六工程有限公司 | Incremental launching construction method for large-span steel box girder spanning constructed road |
| CN106638322A (en) * | 2016-12-28 | 2017-05-10 | 海波重型工程科技股份有限公司 | Steel box beam pushing and deviation correcting method for walking type multiple-point continuous pushing technique |
| CN108457188A (en) * | 2018-01-16 | 2018-08-28 | 闫相明 | A kind of walking incremental launching construction by multipoint jacking construction |
| CN109629440A (en) * | 2019-01-15 | 2019-04-16 | 中铁局集团有限公司 | Steel box-girder push construction method based on walking three-dimensional hydraulic incremental launching device |
| CN111188283A (en) * | 2020-03-05 | 2020-05-22 | 陕西路桥集团有限公司 | Method for integrally and synchronously jacking and falling steel bridge |
Non-Patent Citations (1)
| Title |
|---|
| 李航运: "《浅谈桥梁钢箱梁顶推施工技术控制措施》", 《西部交通科技》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021224A (en) * | 2021-05-26 | 2021-06-25 | 常州市新创智能科技有限公司 | Train body position adjusting and positioning tool and using method thereof |
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Application publication date: 20200922 |