CN204174518U - A kind of bridge floor truss-like instrument boom system - Google Patents
A kind of bridge floor truss-like instrument boom system Download PDFInfo
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- CN204174518U CN204174518U CN201420503115.8U CN201420503115U CN204174518U CN 204174518 U CN204174518 U CN 204174518U CN 201420503115 U CN201420503115 U CN 201420503115U CN 204174518 U CN204174518 U CN 204174518U
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- suspension rod
- replaced
- bridge floor
- rod
- tensioning system
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Abstract
The utility model relates to field of bridge construction, refers to a kind of bridge floor truss-like instrument boom system particularly.Braced structures, tensioning system and tension rod on the bridge floor comprise girder truss, being arranged in below the adjacent suspension rod of suspension rod to be replaced; Described girder truss is fixing on the support structure; Described tensioning system is arranged on the girder truss below suspension rod to be replaced, and tensioning system is arranged in the both sides of suspension rod to be replaced in mode symmetrical between two, and the lower end of tensioning system is connected with tension rod; The lower end of described tension rod is provided with pocket device for hoisting; Described pocket device for hoisting is fixed on the work beam of suspension rod vertical lower to be replaced by tension rod.The utility model has better, the good working space of operating environment, avoids construction to advantages such as the damage of former main arch ring, good versatilities.
Description
Technical field
The utility model relates to field of bridge construction, refers to a kind of bridge floor truss-like instrument boom system particularly.
Background technology
Along with the development of economic society, the construction of arch bridge gets more and more, and is the material particular that bridge operation pipe is supported to the maintenance of arch bridge suspender.In general, the design service life of existing highway bridge code requirement bridge is no less than 100 years, and the application life of suspension rod is usual less than 20 years, needs to change repeatedly at normal working service process middle hanger.China has thousands of arch bridge (particularly in west area arch bridge quantity up to more than 70%), and the suspender replacement quantity for wherein arched bridge pre-stressed boom is many, and task is very arduous.
At present, China has implemented the case history that many arch bridge suspenders are changed, define multiple suspender replacement implementation method, wherein the most commonly arch rib arranges leveling unit, and under bridge deck crossbeam, be symmetrical in suspension rod pocket device for hoisting is set, by punching jack tension fining twisted steel or steel strand at the bottom of vault or crossbeam, suspension rod power is transformed on interim instrument derrick rig.When this kind of instrument suspension rod uses: the 1. work high above the ground of most of operations below arch ring top and bridge deck, operating risk is relatively high; 2. support by arch ring and instrument suspension rod is set, need to arrange levelling piece or hole on arch ring, have certain damage to former main arch ring; 3. support by arch ring and arrange the arch ring of instrument suspension rod for different structure form, applicability is inadequate, does not have versatility.
Summary of the invention
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, provides a kind of bridge floor truss-like instrument boom system.
The technical solution of the utility model is: a kind of bridge floor truss-like instrument boom system, is characterized in that: braced structures, tensioning system and tension rod on the bridge floor comprise girder truss, being arranged in below the adjacent suspension rod of suspension rod to be replaced; Described girder truss is fixing on the support structure; Described tensioning system is arranged on the girder truss below suspension rod to be replaced, and tensioning system is arranged in the both sides of suspension rod to be replaced in mode symmetrical between two, and the lower end of tensioning system is connected with tension rod; The lower end of described tension rod is provided with pocket device for hoisting; Described pocket device for hoisting is fixed on the work beam of suspension rod vertical lower to be replaced by tension rod.
Further described braced structures is provided with multispan, centered by suspension rod to be replaced between two on the symmetrical bridge floor be arranged in below suspension rod.
Further described braced structures comprises and is fixed on two flange on bridge floor, the column be fixed on flange, is arranged on the joint steel pipe between column and is fixed on the i iron distribution beam of column upper end.
Advantage of the present utility model has: directly can realize suspender replacement operation on bridge floor, operating environment is better; Arrange that bridge floor supports by Multispans continuous, the load that when can reduce to remove suspension rod to be replaced, operated adjacent suspension rod increases; There is good working space, less on bridge deck traffic impact; Avoid the damage of construction to former main arch ring; Support by arch ring and the arch ring that instrument suspension rod is adapted to different structure form is set, there is good versatility.
Accompanying drawing explanation
Fig. 1: structural representation of the present utility model;
Fig. 2: the utility model A-A schematic diagram;
Fig. 3: the utility model B-B schematic diagram;
Wherein: 1-girder truss; 2-braced structures; 3-tensioning system; 4-tension rod; 5-pocket device for hoisting; 6-suspension rod to be replaced; 7-suspension rod; 8-bridge floor; 9-work beam; 10-flange; 11-joint steel pipe; 12-column; 13-i iron distribution beam.
Detailed description of the invention
A bridge floor truss-like instrument boom system as shown in Figures 1 to 3, braced structures 2, tensioning system 3 and tension rod 4 on the bridge floor comprise girder truss 1, being arranged in below the adjacent suspension rod 7 of suspension rod 6 to be replaced; Described girder truss 1 is fixing on the support structure 2; Described tensioning system 3 is arranged on the girder truss 1 below suspension rod 6 to be replaced, and tensioning system 3 is arranged in the both sides of suspension rod 6 to be replaced in mode symmetrical between two, and the lower end of tensioning system 3 is connected with tension rod 4; The lower end of described tension rod 4 is provided with pocket device for hoisting 5; Described pocket device for hoisting 5 is fixed on the work beam 9 of suspension rod 6 vertical lower to be replaced by tension rod 4.
Tensioning system 3 comprises jack, hydraulic power unit, cable tensios control equipment and detecting sensor composition, jack is arranged in girder truss 1 top, controlled by cable tensios control equipment, hydraulic power unit drives, detecting sensor tension data feeds back, be used for stretch-draw tension rod 4, same suspension rod to be replaced 6 position, according to the set-up mode of bridge deck beam in length and breadth, symmetrically can adopt 2 tension rods 4 or 4 tension rods 4, during stretch-draw, the synchronous classification of each tension rod is implemented, to try one's best the equivalency transform of realizable force with work suspension rod 6 to be removed, power after equivalency transform is passed on adjacent work suspension rod 7, thus after the dismounting of the work of guarantee suspension rod 7, bridge system structure not change structure state substantially, and realize directly just completing main suspender replacement Suo Li replacement operation in the above position of bridge floor.
Braced structures 2 is provided with multispan, on bridge floor below the work that is arranged in suspension rod 7 symmetrical between two centered by suspension rod 6 to be replaced respectively, such braced structures 2 is arranged on the both sides of bridge, only takies very little working space, and such mode can not affect the traveling of vehicle while changing suspension rod.
Braced structures 2 comprises two flange 10 be fixed on bridge floor 8, the column 12 be fixed on flange 10, is arranged on the joint steel pipe 11 between column 12 and is fixed on the i iron distribution beam 13 of column 12 upper end.Braced structures 2 uses conventional material installation assembled, has good versatility, can assembled use at any time, is used to complete rear dismounting for next bridge floor.
Arrange multispan continuously, when can reduce replacing suspension rod, the pressure of supported on both sides structure 2, ensures to have good stability while construction, ensures the safety of construction.
Pocket device for hoisting 5 generally uses the shoulder pole girder of rigidity, and shoulder pole girder two ends, by the connection of tension rod 4, are fixed on the lower surface of work beam 9, can effectively the weight of work beam 9 and upper end bridge floor be transferred on tension rod 4 like this.
During use, first bridge floor braced structures 2 be arranged on the bridge floor below operated adjacent suspension rod 7, then arrange on the support structure 2 by girder truss 1, tensioning system 3 is arranged in girder truss 1 and tension rod 4 and intersects position, installs tension rod 4, shoulder pole girder 5.4 synchronous classifications of tension rod are implemented, with the equivalency transform of suspension rod 6 realizable force to be replaced, power after equivalency transform is passed on adjacent work suspension rod 7, thus after ensureing suspension rod 6 to be replaced, bridge system structure not change structure state substantially, and realize directly just completing main suspender replacement Suo Li replacement operation in the above position of bridge floor, then remove suspension rod 6 to be replaced, and the suspension rod more renewed.After suspender replacement completes, put a tensioning system 3, first remove tension rod 4, pocket device for hoisting 5, then remove tensioning system 3, girder truss 2, bridge floor support 1 successively, carry out protection work, reuse after being convenient to.
Advantage of the present utility model has: directly can realize suspender replacement operation on bridge floor, operating environment is better; Arrange that bridge floor supports by Multispans continuous, the load that when can reduce to remove suspension rod to be replaced, operated adjacent suspension rod increases; There is good working space, less on bridge deck traffic impact; Avoid the damage of construction to former main arch ring; Support by arch ring and the arch ring that instrument suspension rod is adapted to different structure form is set, there is good versatility.
Claims (3)
1. a bridge floor truss-like instrument boom system, is characterized in that: comprise girder truss (1), be arranged in suspension rod to be replaced (6) adjacent work suspension rod (7) below bridge floor on braced structures (2), tensioning system (3) and tension rod (4); Described girder truss (1) is fixed in braced structures (2); Described tensioning system (3) is arranged on the girder truss (1) of suspension rod to be replaced (6) below, tensioning system (3) is arranged in the both sides of suspension rod to be replaced (6) in mode symmetrical between two, and the lower end of tensioning system (3) is connected with tension rod (4); The lower end of described tension rod (4) is provided with pocket device for hoisting (5); Described pocket device for hoisting (5) is fixed on the work beam (9) of suspension rod to be replaced (6) vertical lower by tension rod (4).
2. a kind of bridge floor truss-like instrument boom system as claimed in claim 1, it is characterized in that: described braced structures (2) is provided with multispan, on the bridge floor of the work that is arranged in suspension rod (7) below symmetrical between two centered by suspension rod to be replaced (6).
3. a kind of bridge floor truss-like instrument boom system as claimed in claim 2, is characterized in that: described braced structures (2) comprises two flange (10) be fixed on bridge floor (8), the column (12) be fixed on flange (10), is arranged on the joint steel pipe (11) between column (12) and is fixed on the i iron distribution beam (13) of column (12) upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420503115.8U CN204174518U (en) | 2014-09-02 | 2014-09-02 | A kind of bridge floor truss-like instrument boom system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420503115.8U CN204174518U (en) | 2014-09-02 | 2014-09-02 | A kind of bridge floor truss-like instrument boom system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204174518U true CN204174518U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420503115.8U Active CN204174518U (en) | 2014-09-02 | 2014-09-02 | A kind of bridge floor truss-like instrument boom system |
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| CN (1) | CN204174518U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460833A (en) * | 2017-08-25 | 2017-12-12 | 中铁大桥勘测设计院集团有限公司 | For improving the system of continuous beam bridge bearing capacity and bridge containing the system |
-
2014
- 2014-09-02 CN CN201420503115.8U patent/CN204174518U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460833A (en) * | 2017-08-25 | 2017-12-12 | 中铁大桥勘测设计院集团有限公司 | For improving the system of continuous beam bridge bearing capacity and bridge containing the system |
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| GR01 | Patent grant |