CN109629398A - A kind of external prestressing strengthening device of type-64 military beam - Google Patents
A kind of external prestressing strengthening device of type-64 military beam Download PDFInfo
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- CN109629398A CN109629398A CN201811601756.6A CN201811601756A CN109629398A CN 109629398 A CN109629398 A CN 109629398A CN 201811601756 A CN201811601756 A CN 201811601756A CN 109629398 A CN109629398 A CN 109629398A
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- frame
- monaural
- support bar
- inclined support
- ears
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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
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The present invention relates to a kind of external prestressing strengthening devices of type-64 military beam comprising A-frame, connector and prestressed cable；Stating A-frame includes upstream and downstream A-frame, is connected between the A-frame of upstream and downstream by horizontal rod；Prestressed cable includes ears anchoring end, tensioning end and steel strand wires；Connector includes top plate and bottom plate；Tensioning bolt and monaural A are fixedly mounted on top plate top surface；Tensioning end is fixedly connected with tensioning bolt, and ears anchor end and corresponding upstream and downstream A-frame；The present invention is by installing connector and A-frame in six or four beam top booms, and the prestressed rope between connector and A-frame, make each node of top boom by prestressing force straight up, to offset vertical unfavorable load caused by six or four Liang Zichong and train passage, to reduce the downwarp of six or four beams and improve the force-bearing situation of vertical bar and other rod pieces.
Description
Technical field
The present invention relates to a kind of external prestressing strengthening devices of type-64 military beam, belong to architectural engineering technology neck
Domain.
Background technique
Type-64 military beam is that China's natural calamity or war burst lead to bridge as a kind of railway recovery girder steel
Be used for the main beam type of bridge rush-repair after damage, but its there are the following problems in actual use: 1. 64 beams are assembled
Formula structure is connected between each component using pin, due to the presence in pin hole gap, causes the vertical deflection of six or four beams larger；2.
In the basic rod piece of six or four beams, the vertical bar bearing capacity in standard triangle or end framework is weaker, can under the action of live load of train
Can be pressurized surrender；3. six or four beams are multiple-piece construction, weaker lateral ties will lead to the lateral stiffness of six or four beams between each
Deficiency generally requires to limit the speed that is open to traffic to avoid lateral amplitude of vibration of six or four beams in train passage excessive.Current heavy duty,
Under the trend of Development of High Speed Railway, the problem of bearing capacity existing for six or four beams and insufficient rigidity, is more highlighted.Therefore, to six or four
Beam is reinforced to adapt to the emergency first-aid repair under current trend and have become a urgent problem to be solved.
Summary of the invention
The purpose of the present invention is overcoming the defect of the bearing capacity of current type-64 military beam and insufficient rigidity, provide
A kind of each node in top boom applies prestressing force straight up, is erected caused by six or four Liang Zichong and train passage with offsetting
To unfavorable load, to reduce the downwarp of six or four beams and six or the four formula railways for improving the force-bearing situation of vertical bar and other rod pieces are military
The external prestressing strengthening device of beam.
The present invention adopts the following technical scheme:
The present invention includes A-frame, connector and the prestressed cable being mounted between A-frame and connector；Described three
Angle support includes upstream A-frame and the downstream A-frame connecting with upstream A-frame；Upstream A-frame and downstream three
Angle support structure is identical to be symmetrical set；It is connected between upstream A-frame and downstream A-frame by horizontal rod；Institute
Stating prestressed cable includes that ears anchoring end, tensioning end and the steel being mounted between ears anchoring end and tensioning end twist
Line；The connector includes top plate and the bottom plate mutually fixed with top plate；Tensioning bolt is fixedly mounted on the top plate top surface
With monaural A；The tensioning end is fixedly connected with tensioning bolt, and the ears anchor end and corresponding upstream A-frame
It is connected with downstream A-frame.
Upstream A-frame or downstream A-frame of the present invention include the left bearing diagonal of top hinge and equal length
Bar and right inclined support bar；Longitudinal horizontal rod is fixedly mounted between left inclined support bar and the outside of right inclined support bar；The left tiltedly branch
Strut or right inclined support bar include more than one connecting rod, the monaural side pole being fixedly mounted at the top of connecting rod or the first ears
Side pole and the second ears side pole for being fixedly mounted on connecting rod bottom；More than two connecting rod head and the tail are mutually fixedly connected；It is left
Inclined support bar top be monaural side pole, then right inclined support bar top be the first ears side pole, corresponding monaural side pole with first pair
Ear side pole is hinged；The the second ears side pole and monaural A of connecting rod bottom are hinged；Horizontal rod includes more than one connection
Bar, the first ears side pole being fixedly mounted at the top of connecting rod and the second ears side pole for being fixedly mounted on connecting rod bottom；
Installation connecting element is spaced on the left inclined support bar and right inclined support bar；The connector include be fixed on left inclined support bar and
Hoop on right inclined support bar and the monaural B and monaural C being mounted on hoop side wall；Monaural B and monaural C is in 90 settings；It is horizontal
It is hinged to horizon bar both ends with corresponding monaural B or monaural C；Ears anchor end and are located at left inclined support bar and right inclined support bar
The monaural B or monaural C of inside are hinged.
Top plate and bottom plate U-shaped profile of the present invention, top plate and bottom plate are plugged and fixed.
Jack, the inserted link of other end setting and the cooperation of jack shape is arranged in connecting rod one end of the present invention；Monaural side pole and
The one ears side pole other end is respectively provided with inserted link, and jack is arranged in the second ears side pole other end；After corresponding inserted link and jack inserting
It is bolted.
Tensioning end of the present invention is limited a sleeve, tensioning head top part and steel strand wires are fixed is clamped, tensioning head bottom part with
The connection of tensioning bolt thread.
Good effect of the present invention is as follows: the triangle branch of the external prestressing strengthening device of type-64 military beam of the present invention
Frame and connector are assembled structure, it can be achieved that fast transportation, installation and removal, the operating condition suitable for emergency first-aid repair.Triangle
Each rod piece in bracket composition be sectional type structure, it can be achieved that rod length adjustment, to form different size of branch
Frame, to meet the reinforcing demand of each span, six or four beam of the piece number.It, can be by increasing and decreasing connecting rod for the variation for adapting to six or four beam spans
To adjust the length of left and right inclined support bar and longitudinal horizontal rod and the horizontal sextant angle of left and right inclined support bar；To adapt to six or four beam pieces
Several variations can adjust the length of horizontal rod, in addition, the installation number of longitudinal horizontal rod and position by increase and decrease connecting rod
Setting can be adjusted flexibly according to the force-bearing situation of left and right inclined support bar, and the installation number of horizontal rod and position can be according to triangles
Lateral stiffness needed for bracket is adjusted flexibly.
The present invention is by installing connector and A-frame in six or four beam top booms, and between connector and A-frame
Prestressed rope makes each node of top boom by prestressing force straight up, to offset six or four Liang Zichong and train passage institute
Caused vertical unfavorable load, to reduce the downwarp of six or four beams and improve the force-bearing situation of vertical bar and other rod pieces.Triangle branch
The monaural A of the lower end and connector of left inclined support bar or right inclined support bar is hinged in frame, and A-frame and six or four beams wind up rod
At self equilibrium systems, left inclined support bar and right inclined support bar will be on six or four beams under the vertical uniform load q that prestressed cable is born
Chord member generates pulling force, so as to mitigate the compression situation of six or four beam top booms under self weight and High-speed Train Loads.The present invention three
Angle support have lateral stiffness, connect with six or four beams it is integral bear lateral swaying force of train, to reduce train passage
Amplitude is generated, the speed that is open to traffic is improved.
Steel strand wires as the material of main part of prestressed cable and are applied prestressing force by the present invention, can play the effect actively reinforced
Fruit overcomes the ess-strain braking problems of Materials with High Strength in passive enforcement technology, improves the utilization rate of material.
Detailed description of the invention
Attached drawing 1 is schematic structural view of the invention；
Attached drawing 2 is prestressed cable structures schematic diagram of the present invention；
Attached drawing 3 is connector structural schematic diagram of the present invention；
Attached drawing 4 is connector of the present invention and six or four beam mounting structure schematic diagrams；
Attached drawing 5 is left inclined support bar of the invention or right inclined support bar structural schematic diagram；
Attached drawing 6 is right inclined support bar of the invention or left inclined support bar structural schematic diagram；
Attached drawing 7 is that connecting rod of the present invention is linked and packed with monaural side pole, the first ears side pole or the second ears side pole structure respectively
Schematic diagram；
Attached drawing 8 is connecting-piece structure schematic diagram of the present invention；
Attached drawing 9 is that the present invention reinforces structural schematic diagram of the 32m across double-deck six or four beams of 7 chips；
Attached drawing 10 is that the present invention reinforces structural schematic diagram of the 24m across double-deck six or four beams of 6 chips.
Specific embodiment
As shown in attached drawing 1-4, the present invention includes A-frame 101, connector 301 and is mounted on 101 and of A-frame
Prestressed cable 201 between connector 301；The A-frame includes upstream A-frame and connect with upstream A-frame
Downstream A-frame；Upstream A-frame is identical with downstream A-frame structure to be symmetrical set；Upstream A-frame and downstream
It is connected between A-frame by horizontal rod 103；The prestressed cable 201 includes that ears anchor end 203, tensioning end
204 and be mounted on ears anchoring end 203 and tensioning end 204 between steel strand wires 202；The connector 301 includes top plate
302 and the bottom plate 303 fixed with 302 phase of top plate；303 U-shaped profile of top plate 302 and bottom plate, top plate 302 and bottom plate 303
It is plugged on the top boom of six or four beams, and fixed by fixing bolt 304；Tensioning is fixedly mounted on 302 top surface of top plate
Bolt 305 and monaural A306；The tensioning end 204 is fixedly connected with tensioning bolt 305, ears anchoring end 203 with
Corresponding upstream A-frame is connected with downstream A-frame；Tensioning end 204 is spacing collar, the top of tensioning end 204 with
The fixed clamping of steel strand wires 202,204 bottom of tensioning end is threadedly coupled with tensioning bolt 305；Attached drawing 1 be the present invention reinforce 24m across
The structural schematic diagram of 7 chips, six or four beams of bilayer.
As shown in attached drawing 1,5,6,7,8, upstream A-frame or downstream A-frame of the present invention include top hinge and length
Spend equal left inclined support bar 102 and right inclined support bar 109；The left inclined support bar 102 that is connected and right inclined support bar 109 it is outer
Longitudinal horizontal rod 104 is fixedly mounted between side；The left inclined support bar 102 or right inclined support bar 109 include more than one company
Extension bar 105, the monaural side pole 106 for being fixedly mounted on 105 top of connecting rod or the first ears side pole 107 and the company of being fixedly mounted on
Second ears side pole 108 of 105 bottom of extension bar；More than two 105 head and the tail of connecting rod are mutually fixedly connected；If left inclined support bar
102 tops are monaural side pole 106, then right 109 top of inclined support bar is the first ears side pole 107, monaural side pole 106 and first pair
Ear side pole 107 is hinged；Second ears side pole 108 and monaural A306 of 105 bottom of connecting rod is hinged；Horizontal rod 103 includes
More than one connecting rod 105, the first ears side pole 107 for being fixedly mounted on 105 top of connecting rod and the company of being fixedly mounted on
Second ears side pole 108 of 105 bottom of extension bar；Interval installation connects on the left inclined support bar 102 and right inclined support bar 109
Fitting；The connector includes the hoop 110 being fixed on left inclined support bar 102 and right inclined support bar 109 and is mounted on ring
Bind round the monaural B111 and monaural C112 on 110 side walls；Monaural B111 and monaural C112 is in 90 settings；103 both ends of horizontal rod
It is hinged with corresponding monaural B111 or monaural C112；Ears anchor end 203 and are hinged with corresponding monaural B111 or monaural C112.
As shown in Fig. 7, jack 113 is arranged in 105 one end of connecting rod of the present invention, and other end setting is matched with 113 shape of jack
The inserted link 114 that closes and can insert；Monaural side pole 106 and 107 other end of the first ears side pole are respectively provided with inserted link 114, the second ears
Jack 113 is arranged in 108 other end of side pole；Corresponding inserted link 114 is bolted after inserting with jack 113.
Below by taking 24m is across double-deck six or four beams of 7 chips as an example, in conjunction with attached drawing 1-8, the present invention is further illustrated:
Step 1: according to the span and the piece number of the type-64 military beam that need to be reinforced, the span and cross of A-frame 101 are determined
To width；
Step 2: vertical deflection, each rod piece stress level and the lateral amplitude of vibration for the type-64 military beam that analysis need to reinforce lead to
It crosses vertical deflection and each rod piece stress level determines the prestressing force of every prestressed cable 201, determined according to prestressing force size left oblique
The force-bearing situation of support rod 102 and right inclined support bar 109, so that it is determined that the installation number of longitudinal horizontal rod 104 and position；Pass through
Lateral amplitude of vibration determines installation number and the position of horizontal rod 103；
Step 3: installing connector 301 on the top boom of outermost two panels beam, for installation A-frame 101 and prestressing force
Rope 201 provides basis；
Step 4: according to Step 1: two parameter groups provided fill the left inclined support bar 102 and right bearing diagonal of corresponding length, quantity
Bar 109, horizontal rod 103 and longitudinal horizontal rod 104 are hinged at the top of left inclined support bar 102 and right inclined support bar 109, on a left side
Installation connecting element on inclined support bar 102 and right inclined support bar 109,
103 both ends of horizontal rod are hinged with corresponding monaural B111 or monaural C112, longitudinal horizontal rod 104 and left inclined support bar
102 and the outside of right inclined support bar 109 fixed by connection fastener, the lower end of left inclined support bar 102 and right inclined support bar 109 with
The monaural A306 of connector is hinged；
Step 5: the horizontal position of monaural B111 or monaural C112 and ears anchoring end 203 is corresponding and be hinged；Stretching end
First 204 connect with tensioning bolt 305；
Step 6: the parameter provided according to step 2 adjusts the prestressing force of each prestressed cable 201 by screwing tensioning end 204,
A-frame 101 is set to bear the load acted on type-64 military beam；It completes to pass through the external prestressing strengthening device
Reinforce six or four beams.
It for other six or four beams of span, can be reinforced by different combinations, be added as shown in Fig. 9 for the present invention
Gu 32m is across double-deck six or four beams of 7 chips；24m is reinforced across double-deck six or four beams of 6 chips as shown in Fig. 10 for the present invention.
The A-frame and connector of the external prestressing strengthening device of type-64 military beam of the present invention are assembly
Formula structure is, it can be achieved that fast transportation, installation and removal, the operating condition suitable for emergency first-aid repair.Each bar in A-frame composition
Part be sectional type structure, it can be achieved that rod length adjustment, so that different size of bracket is formed, to meet each span, piece
The reinforcing demand of six or four beam of number.For the variation for adapting to six or four beam spans, can tiltedly be propped up by increase and decrease connecting rod 105 to adjust left or right
The length of strut and longitudinal horizontal rod 104；For the variation for adapting to six or four beam the piece numbers, cross can be adjusted by increase and decrease connecting rod 105
To the length of horizon bar 103, in addition, the installation number of longitudinal horizontal rod 104 and position can according to left or right inclined support bar by
Power situation is adjusted flexibly, the installation number of horizontal rod 103 and position can the lateral stiffness according to needed for A-frame flexibly adjust
It is whole.
The present invention is by installing connector and A-frame in six or four beam top booms, and between connector and A-frame
Prestressed rope makes each node of top boom by prestressing force straight up, to offset six or four Liang Zichong and train passage institute
Caused vertical unfavorable load, to reduce the downwarp of six or four beams and improve the force-bearing situation of vertical bar and other rod pieces.Triangle branch
The monaural A306 of the lower end of left inclined support bar 102 or right inclined support bar 109 and connector 301 is hinged in frame, A-frame and six
Four beam top booms form self equilibrium systems, left inclined support bar and right inclined support bar under the vertical uniform load q that prestressed cable is born
Pulling force will be generated to six or four beam top booms, so as to mitigate the compression shape of six or four beam top booms under self weight and High-speed Train Loads
Condition.A-frame of the present invention have lateral stiffness, connect with six or four beams it is integral bear lateral swaying force of train, to subtract
Small train passage generates amplitude, improves the speed that is open to traffic.
Steel strand wires as the material of main part of prestressed cable and are applied prestressing force by the present invention, can play the effect actively reinforced
Fruit overcomes the ess-strain braking problems of Materials with High Strength in passive enforcement technology, improves the utilization rate of material.
Finally, it is stated that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit the invention, it is all
Any modification, equivalent replacement or improvement etc., should be included in guarantor of the invention made by within the spirit and principles in the present invention
Within the scope of shield.
Claims (5)
1. a kind of external prestressing strengthening device of type-64 military beam, it is characterised in that it include A-frame (101),
Connector (301) and the prestressed cable (201) being mounted between A-frame (101) and connector (301)；
The A-frame includes upstream A-frame and the downstream A-frame connecting with upstream A-frame；Upstream triangle branch
Frame is identical with downstream A-frame structure to be symmetrical set；By transversely and horizontally between upstream A-frame and downstream A-frame
Bar (103) connection；
The prestressed cable (201) includes ears anchoring end (203), tensioning end (204) and is mounted on ears anchoring end
(203) steel strand wires (202) between tensioning end (204)；
The connector (301) include top plate (302) and with top plate (302) mutually fixed bottom plate (303)；In the top plate
(302) tensioning bolt (305) and monaural A(306 are fixedly mounted on top surface)；
The tensioning end (204) is fixedly connected with tensioning bolt (305), ears anchoring end (203) with it is corresponding on
Trip A-frame is connected with downstream A-frame.
2. a kind of external prestressing strengthening device of type-64 military beam according to claim 1, it is characterised in that
The upstream A-frame or downstream A-frame include top hinge and the left inclined support bar (102) of equal length and right tiltedly branch
Strut (109)；Longitudinal horizontal rod (104) are fixedly mounted between left inclined support bar (102) and the outside of right inclined support bar (109)；
The left inclined support bar (102) or right inclined support bar (109) include more than one connecting rod (105), are fixedly mounted on
Monaural side pole (106) or the first ears side pole (107) at the top of connecting rod (105) and it is fixedly mounted on connecting rod (105) bottom
The second ears side pole (108) in portion；More than two connecting rod (105) head and the tail are mutually fixedly connected；
Left inclined support bar (102) top is monaural side pole (106), then right inclined support bar (109) top is the first ears side pole
(107), corresponding monaural side pole (106) and the first ears side pole (107) are hinged；The second ears end of connecting rod (105) bottom
Bar (108) and monaural A(306) it is hinged；
Horizontal rod (103) includes more than one connecting rod (105), be fixedly mounted at the top of connecting rod (105) first
Ears side pole (107) and the second ears side pole (108) for being fixedly mounted on connecting rod (105) bottom；
Installation connecting element is spaced on the left inclined support bar (102) and right inclined support bar (109)；The connector includes fixing
In the hoop (110) on left inclined support bar (102) and right inclined support bar (109) and the list being mounted on hoop (110) side wall
Ear B(111) and monaural C(112)；Monaural B(111) and monaural C(112) in 90 settings；
Horizontal rod (103) both ends are hinged with corresponding monaural B(111) or monaural C(112)；Ears anchor end (203) with
Monaural B(111 on the inside of left inclined support bar (102) and right inclined support bar (109)) or monaural C(112) be hinged.
3. a kind of external prestressing strengthening device of type-64 military beam according to claim 1 or 2, feature exist
In top plate (302) and bottom plate (303) U-shaped profile, top plate (302) and bottom plate (303) are plugged and fixed.
4. a kind of external prestressing strengthening device of type-64 military beam according to claim 2, it is characterised in that
Jack (113) are arranged in connecting rod (105) one end, the inserted link (114) of other end setting and the cooperation of jack (113) shape；
Monaural side pole (106) and first ears side pole (107) other end are respectively provided with inserted link (114)；
Jack (113) are arranged in second ears side pole (108) other end；Corresponding inserted link (114) passes through after inserting with jack (113)
Bolt is fixed.
5. a kind of external prestressing strengthening device of type-64 military beam according to claim 1, it is characterised in that
Tensioning end (204) is spacing collar, fixes and is clamped with steel strand wires (202) at the top of tensioning end (204), tensioning end (204)
Bottom is threadedly coupled with tensioning bolt (305).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811601756.6A CN109629398B (en) | 2018-12-26 | 2018-12-26 | External prestress reinforcing device of six-four type railway military beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811601756.6A CN109629398B (en) | 2018-12-26 | 2018-12-26 | External prestress reinforcing device of six-four type railway military beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109629398A true CN109629398A (en) | 2019-04-16 |
| CN109629398B CN109629398B (en) | 2020-12-29 |
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ID=66077923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811601756.6A Active CN109629398B (en) | 2018-12-26 | 2018-12-26 | External prestress reinforcing device of six-four type railway military beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109629398B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184724A (en) * | 2012-12-19 | 2013-07-03 | 华南理工大学 | Adjustable damping device of external prestressing cable during bridge reinforcement |
| CN206359873U (en) * | 2016-12-28 | 2017-07-28 | 西安科技大学 | A kind of arch bridge and suspension bridge combined type self-balancing bridge |
| CN206625138U (en) * | 2017-03-17 | 2017-11-10 | 邱飞洋 | A kind of Road Bridge Pile Foundation bracing means |
| CN107354857A (en) * | 2017-08-30 | 2017-11-17 | 中铁工程设计咨询集团有限公司 | A kind of high-speed railway repairing combined box beam and its assemble method |
-
2018
- 2018-12-26 CN CN201811601756.6A patent/CN109629398B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184724A (en) * | 2012-12-19 | 2013-07-03 | 华南理工大学 | Adjustable damping device of external prestressing cable during bridge reinforcement |
| CN206359873U (en) * | 2016-12-28 | 2017-07-28 | 西安科技大学 | A kind of arch bridge and suspension bridge combined type self-balancing bridge |
| CN206625138U (en) * | 2017-03-17 | 2017-11-10 | 邱飞洋 | A kind of Road Bridge Pile Foundation bracing means |
| CN107354857A (en) * | 2017-08-30 | 2017-11-17 | 中铁工程设计咨询集团有限公司 | A kind of high-speed railway repairing combined box beam and its assemble method |
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| Publication number | Publication date |
|---|---|
| CN109629398B (en) | 2020-12-29 |
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