CN108708281A - A kind of porous freely-supported approximation arch steel truss beam erection method - Google Patents
A kind of porous freely-supported approximation arch steel truss beam erection method Download PDFInfo
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- CN108708281A CN108708281A CN201810311135.8A CN201810311135A CN108708281A CN 108708281 A CN108708281 A CN 108708281A CN 201810311135 A CN201810311135 A CN 201810311135A CN 108708281 A CN108708281 A CN 108708281A
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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
- E01D6/00—Truss-type bridges
- E01D6/02—Truss-type bridges of bowstring type
-
- 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
- E01D2101/30—Metal
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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 kind of porous freely-supported approximation arch steel truss beam erection methods, include the following steps：Step 1 installs girder steel assembly slippage bracket at access bridge；Step 2, assembled nose girder and the first hole girder steel on holder；Step 3, anchor point forms first set traction system after steel strand wires connect continuous jack and girder steel tail portion on main pier slipway beam；Step 4 pulls girder steel to slide a distance, the second hole girder steel is installed on the holder vacated, and the first hole girder steel, the second hole girder steel are connected by interim connecting rod, and second set of traction system is arranged；Step 5 repeats above-mentioned assembled, pulling step, girder steel is drawn to opposite bank.The present invention, porous approximate arch Simply-supported Steel Beams are connected temporarily by interim connecting rod integral, girder steel is drawn by traction system again and is built between two sides, this method process is simple and convenient to operate, speed of application is fast, and input large scale equipment, falsework quantity are few, assembly girder steel is safe efficient, environmentally friendly at access bridge.
Description
Technical field
The present invention relates to technical field of bridge construction, and in particular to a kind of porous freely-supported approximation arch steel truss erection side
Method.
Background technology
There are many erection methods of currently used steel truss girder, is set up using thrusting slip as continuous steel girder
Method, launching method etc., both methods is assembled girder steel on end of the bridge, then makes girder steel in each pier by horizontal continuity jack
Piecewise forward slip on slideway, or upper setting roller bearing or slide plate are slided into each pier, then steel is drawn by hoist engine or jack
Beam completes construction, such method is time saving and energy saving without establishing temporary rest pier in water, and can reduce the pollution to water body.
And for porous approximate arch freely-supported steel truss girder due to being unconnected between each arch trusses, and think setting connection
It is again relatively difficult, or bearing capacity is insufficient after setting connection, therefore generally using falsework method, crane barge erection method etc., but this
A little method needs additionally build building, carry out coordinative construction, lead to the problem of long in time limit and increase construction cost occur；It applies simultaneously
Work needs to carry out on the water, and danger coefficient is big, and polluted water resources are easy in the operations such as welding, oil paint coating.
It can be seen that in the prior art the erection method of porous freely-supported approximation arch steel truss girder there are it is long in time limit, be constructed into
The problem of this height, danger coefficient are big and are easy to pollute water resource.
Invention content
The technical problem to be solved by the present invention is to the presence of the erection method of current porous freely-supported approximation arch steel truss girder
It is long in time limit, construction cost is high, danger coefficient is big and is easy the problem of being polluted to water resource.
In order to solve the above-mentioned technical problem, there is provided a kind of porous freely-supported approximations to encircle for the technical solution adopted in the present invention
Shape steel truss beam erection method, includes the following steps：
Step 1 installs girder steel assembling support and slippage bracket at access bridge；
Step 2, assembled nose girder and the first hole girder steel, are arranged vertical jack and cushion block to steel on girder steel assembling support
Beam is supported conversion；
Step 3 installs horizontal continuity jack on main pier slipway beam, after the tail end installation girder steel of the first hole girder steel
Anchor point, the both ends of steel strand wires are separately fixed at after horizontal continuity jack, girder steel on anchor point, form first set traction system；
Nose girder and the first hole girder steel are drawn the length of the first hole girder steel by first set traction system by step 4 to opposite bank
Degree removes anchor point after the girder steel of the first hole girder steel tail end, and the second hole girder steel is installed on girder steel assembling support, and the second hole girder steel is logical
It crosses interim connecting rod to connect with the first hole girder steel, interim connecting rod includes more for connecting the first hole girder steel, the second hole
The interim connection montant and Duo Gen of the lower boom of girder steel are used to connect the first hole girder steel, the interim of top boom of the second hole girder steel connects
Chord member is connected, connects the lower section that montant is fixed at interim connection top boom temporarily, temporarily by more between connection top boom
A interim connection lateral rod piece connection, anchor point after girder steel is installed to the rear end of the second hole girder steel, first set traction system is restored,
Horizontal continuity jack is set on the main pier in nose girder front end, counter-force seat is set on nose girder, connects to form second set by steel strand wires
Traction system, using first set traction system, second set of traction system by nose girder and the first hole girder steel, the second hole girder steel to opposite bank
The length of dilatory first hole girder steel；
Step 5 repeats step 1~step 4, girder steel is drawn to opposite bank, removes interim connecting rod, and designing
Pad, vertical jack top lifting are installed in position, and girder steel falls beam, removes girder steel assembling support and slippage bracket.
In the above scheme, nose girder and the first hole girder steel are carried out by crawler crane and gantry crane in the step 2
It is assembled.
In the above scheme, the bottom of horizontal continuity jack is equipped with jack counter-force seat in the step 3, horizontal
It is equipped with preformed hole on continuous jack and jack counter-force seat, one end of steel strand wires is fixed on anchor after girder steel by cone-shaped clip
On point, the other end sequentially passes through jack counter-force seat and preformed hole on horizontal continuity jack and solid eventually by cone-shaped clip
It is scheduled on horizontal continuity jack.
In the above scheme, horizontal continuity jack is set in the step 4 on the main pier slipway beam in nose girder front end,
Pushing reaction seat is installed, pushing reaction seat is equipped with preformed hole, and steel strand wires connect horizontal continuity jack between the node of nose girder
It with girder steel counter-force seat, is fixed on pushing reaction seat and horizontal continuity jack by cone-shaped clip, forms second set of dilatory system
System, first set traction system, second set of traction system are mutual indepedent.
In the above scheme, the bottom for connecting montant temporarily in the step 4 is fixed with interim connection jigsaw, leads to
It crosses bolt the lower boom of the first hole girder steel, the second hole girder steel is connect jigsaw and linked together with interim, in the first hole girder steel, the
Setting connection otic placode is stretched out in the free end of two hole girder steels, and the interim both ends for connecting top boom connect with connection otic placode, face respectively
When connection top boom middle part and both sides be equipped with connecting plate, the interim other end for connecting montant is fixed on connecting plate, temporarily
Connection lateral rod piece connect top boom connection by connecting plate with interim.
In the above scheme, when removing interim connecting rod, connection otic placode is cut by equipment, while will connect temporarily
Disassembling bolts on jigsaw complete dismounting.
In the above scheme, the position that design position eventually arrives at for girder steel in the step 5, and the height of pad
The setting of beam absolute altitude is fallen according to girder steel.
In the above scheme, it is respectively provided with lateral deviation-correcting device on each bridge pier.
The present invention, porous approximate arch Simply-supported Steel Beams are connected temporarily by interim connecting rod it is integral, then by dragging
Girder steel is drawn and is built between two sides by pull system, and this method process is simple and convenient to operate, speed of application is fast, and puts into large-scale
Equipment, falsework quantity are few, and assembly girder steel is safe efficient, environmentally friendly at access bridge.
Description of the drawings
Fig. 1 is the structural schematic diagram of the heave of the first hole girder steel of the present invention；
Fig. 2 be the present invention the first hole girder steel, the second hole girder steel heave structural schematic diagram；
Fig. 3 is the structural schematic diagram of the work progress of the present invention；
Fig. 4 is the structural schematic diagram that nose girder is dragged to designated position by the present invention；
Fig. 5 is the structural schematic diagram of the interim connecting rod of the present invention；
Fig. 6 is the cross-section diagram at the 1-1 in Fig. 5；
Fig. 7 is the cross-section diagram at the 2-2 in Fig. 5；
Fig. 8 is the partial enlarged view at A in Fig. 2；
Fig. 9 is the partial enlarged view at B in Fig. 3；
Figure 10 is the partial enlarged view at C in Fig. 5.
Specific implementation mode
The present invention is described in detail with reference to specific embodiment and Figure of description.
As shown in Fig. 1~Figure 10, the present invention provides a kind of porous freely-supported approximation arch steel truss beam erection methods, specifically
Work progress is as follows：
As shown in Fig. 1 and Fig. 9, girder steel assembling support 200 and slippage bracket 210 be installed first at access bridge, and by crawler belt
The mechanical equipments such as loop wheel machine and gantry crane are parked at access bridge.By equipment such as crawler crane and gantry cranes in girder steel when construction
Assembled 100 and first hole girder steel 110 of nose girder on assembling support 200, and be arranged vertical jack 300 and cushion block 310 to girder steel into
Row support conversion.
As shown in Figures 2 and 8, horizontal continuity jack 400 is installed on main pier slipway beam, in horizontal continuity jack 400
Bottom be equipped with jack counter-force seat 410, be equipped with preformed hole on horizontal continuity jack 400 and jack counter-force seat 410,
Anchor point after the tail end installation girder steel of first hole girder steel 110, one end of steel strand wires 500 are fixed on anchor point after girder steel by cone-shaped clip
On, the other end sequentially passes through jack counter-force seat 410 and the preformed hole on horizontal continuity jack 400 and eventually by tapered clamp
Piece is fixed on horizontal continuity jack 400, and then forms first set traction system, by first set traction system by nose girder
100 and first hole girder steel 110 length of the first hole girder steel 110 is drawn to opposite bank.
The girder steel of 110 tail end of the first hole girder steel is removed after nose girder 100 and the first hole girder steel 110 reach specified position
Anchor point afterwards installs the second hole girder steel 120, between the second hole girder steel 120 and the first hole girder steel 110 on girder steel assembling support 200
It is connected by interim connecting rod 600, and anchor point after girder steel is installed to the tail end of the second hole girder steel 120, restored first set and drag
Pull system.Second set of traction system is added simultaneously, horizontal continuity jack 400 is installed on the main pier in nose girder front end, in nose girder 100
Node between pushing reaction seat is installed, pushing reaction seat is equipped with preformed hole, and steel strand wires 500, one end of steel strand wires 500 is arranged
It is fixed on pushing reaction seat by cone-shaped clip, the other end sequentially passes through jack counter-force seat 410 and horizontal continuity jack
Preformed hole on 400 is simultaneously fixed on eventually by cone-shaped clip on horizontal continuity jack 400, forms second set of traction system,
And first set traction system, second set of traction system are mutual indepedent.It will be led using first set traction system, second set of traction system
Beam 100 and the first hole girder steel 110, the first hole girder steel 110 draw the length of the first hole girder steel 110 to opposite bank.
As shown in Figure 3 and Figure 4, it finally repeating above operation up to drawing girder steel to opposite bank, removing interim connecting rod
Part 600, and pad is installed in design position, design position is the position that girder steel eventually arrives at, and the height of pad is according to steel
Beam falls the setting of beam absolute altitude, and girder steel falls the height that depth of beam is pad every time.300 top lifting of vertical jack, girder steel fall beam, tear open
Except girder steel assembling support 200 and slippage bracket 210, construction is completed.
Pushing reaction seat increases the area of having an effect of horizontal continuity jack 400, and then adds the efficiency of pushing tow, similarly for
Overcome the problems, such as that main pier bears that horizontal force is limited, can also install girder steel pushing reaction seat, simultaneously between the node of girder steel
The preformed hole passed through for steel strand wires 500 is set on girder steel pushing reaction seat.
As shown in Fig. 5, Fig. 6 and Fig. 7, interim connecting rod 600 includes more for connecting the first hole girder steel 110, second
The interim downlink connection montant 610 and Duo Gen of the lower boom of hole girder steel 120 are for connecting the first hole girder steel 110, the second hole girder steel 120
Top boom interim connection top boom 620, the bottom of interim downlink connection montant 610 is fixed with interim connection jigsaw 611, leads to
It crosses bolt the lower boom of the first hole girder steel 110, the second hole girder steel 120 connect jigsaw 611 and linked together with interim, convenient for pacifying
Dress, convenient disassembly, and stability is good.
As shown in Figure 10, the first hole girder steel 110, the second hole girder steel 120 free end stretch out setting connection otic placode 700,
The both ends of interim connection top boom 620 are connect with connection otic placode 700 respectively, and the interim middle part for connecting top boom 620 and both sides are equal
Equipped with connecting plate 621, the interim other end for connecting montant 610 is fixed on the connecting plate 621 at middle part, connects top boom temporarily
Multiple interim connection lateral rod pieces 630 are equipped between 620, the interim both ends for connecting lateral rod piece 630 are separately fixed at both sides
It is connected on connecting plate 621 and then with the interim top boom 620 that connect, ensure that the stability of interim connection top boom 620.
When removing interim connecting rod 600, connection otic placode 700 is cut by equipment, while jigsaw will be connected temporarily
Disassembling bolts on 611, and then the dismounting of interim connecting rod 600 is completed, it is easy to operate, accelerate working efficiency.
It is respectively provided with lateral deviation-correcting device on each bridge pier, lateral deviation-correcting device is that the transverse direction that is arranged on bridge pier is very heavy
Top is influenced, girder steel may will produce lateral position by wind load and other external factors when girder steel is when carrying out pushing tow
It moves, is at this moment adjusted by lateral jack, ensure the straightness of girder steel.
The present invention, porous approximate arch Simply-supported Steel Beams are connected temporarily by interim connecting rod it is integral, then by dragging
Girder steel is drawn and is built between two sides by pull system, and this method process is simple and convenient to operate, speed of application is fast, and puts into large-scale
Equipment, falsework quantity are few, and assembly girder steel is safe efficient, environmentally friendly at access bridge.
The present invention is not only limited to above-mentioned preferred forms, and anyone should learn that is obtained under the inspiration of the present invention
Structure change, the technical schemes that are same or similar to the present invention are each fallen within protection scope of the present invention.
Claims (8)
1. a kind of porous freely-supported approximation arch steel truss beam erection method, which is characterized in that include the following steps：
Step 1 installs girder steel assembling support and slippage bracket at access bridge；
Step 2, assembled nose girder and the first hole girder steel on girder steel assembling support, be arranged vertical jack and cushion block to girder steel into
Row support conversion；
Step 3 installs horizontal continuity jack on main pier slipway beam, the anchor point after the tail end installation girder steel of the first hole girder steel,
The both ends of steel strand wires are separately fixed at after horizontal continuity jack, girder steel on anchor point, form first set traction system；
Nose girder and the first hole girder steel are drawn the length of the first hole girder steel to opposite bank by first set traction system, torn open by step 4
Except anchor point after the girder steel of the first hole girder steel tail end, the second hole girder steel is installed on girder steel assembling support, the second hole girder steel is by facing
When connecting rod connect with the first hole girder steel, interim connecting rod include more for connect the first hole girder steel, the second hole girder steel
Lower boom interim connection montant and Duo Gen be used to connect the first hole girder steel, the second hole girder steel top boom interim connection
Chord member connects the lower section that montant is fixed at interim connection top boom, is faced by multiple between interim connection top boom temporarily
When connection lateral rod piece connection, anchor point after girder steel is installed to the rear end of the second hole girder steel, restores first set traction system, is leading
Horizontal continuity jack is set on the main pier in beam front end, counter-force seat is set on nose girder, connected by steel strand wires to be formed second set it is dilatory
System is drawn nose girder and the first hole girder steel, the second hole girder steel to opposite bank using first set traction system, second set of traction system
The length of first hole girder steel；
Step 5 repeats step 1~step 4, girder steel is drawn to opposite bank, removes interim connecting rod, and in design position
Pad, vertical jack top lifting are installed, girder steel falls beam, removes girder steel assembling support and slippage bracket.
2. a kind of porous freely-supported approximation arch steel truss beam erection method according to claim 1, which is characterized in that described
Nose girder and the first hole girder steel are carried out assembled by crawler crane and gantry crane in step 2.
3. a kind of porous freely-supported approximation arch steel truss beam erection method according to claim 1, which is characterized in that described
The bottom of horizontal continuity jack is equipped with jack counter-force seat in step 3, equal on horizontal continuity jack and jack counter-force seat
Equipped with preformed hole, one end of steel strand wires is fixed on by cone-shaped clip after girder steel on anchor point, and it is anti-that the other end sequentially passes through jack
Power seat and preformed hole on horizontal continuity jack are simultaneously fixed on eventually by cone-shaped clip on horizontal continuity jack.
4. a kind of porous freely-supported approximation arch steel truss beam erection method according to claim 1, which is characterized in that described
Horizontal continuity jack is set in step 4 on the main pier slipway beam in nose girder front end, pushing reaction is installed between the node of nose girder
Seat, pushing reaction seat are equipped with preformed hole, and steel strand wires connect horizontal continuity jack and girder steel counter-force seat, solid by cone-shaped clip
Be scheduled on pushing reaction seat and horizontal continuity jack, formed second set of traction system, and first set traction system, second set drag
Pull system is mutual indepedent.
5. a kind of porous freely-supported approximation arch steel truss beam erection method according to claim 1, which is characterized in that described
The bottom for connecting montant in step 4 temporarily is fixed with interim connection jigsaw, by bolt by the first hole girder steel, the second hole steel
The lower boom of beam connect jigsaw and links together with interim, stretches out setting in the free end of the first hole girder steel, the second hole girder steel
Connection otic placode, the interim both ends for connecting top boom are connect with connection otic placode respectively, and the interim middle part for connecting top boom and both sides are equal
Equipped with connecting plate, the interim other end for connecting montant is fixed on connecting plate, it is interim connect lateral rod piece by connecting plate with face
When connection top boom connection.
6. a kind of porous freely-supported approximation arch steel truss beam erection method according to claim 5, which is characterized in that dismounting is faced
When connecting rod when, connection otic placode is cut by equipment, while by the disassembling bolts on interim connection jigsaw, completing dismounting.
7. a kind of porous freely-supported approximation arch steel truss beam erection method according to claim 1, which is characterized in that described
Design position is the position that girder steel eventually arrives in step 5, and the height of pad is set according to the beam absolute altitude that falls of girder steel.
8. a kind of porous freely-supported approximation arch steel truss beam erection method according to claim 1, which is characterized in that each
Lateral deviation-correcting device is respectively provided on bridge pier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311135.8A CN108708281A (en) | 2018-04-09 | 2018-04-09 | A kind of porous freely-supported approximation arch steel truss beam erection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311135.8A CN108708281A (en) | 2018-04-09 | 2018-04-09 | A kind of porous freely-supported approximation arch steel truss beam erection method |
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| CN201810311135.8A Pending CN108708281A (en) | 2018-04-09 | 2018-04-09 | A kind of porous freely-supported approximation arch steel truss beam erection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109868750A (en) * | 2019-04-04 | 2019-06-11 | 中铁八局集团有限公司 | A kind of freely-supported steel truss girder four-point supporting pushing tow system and pushing method |
| CN111733703A (en) * | 2020-07-02 | 2020-10-02 | 中国建筑第八工程局有限公司 | Accumulated dragging and pushing construction mechanism for bridge structure and construction method thereof |
| CN115030060A (en) * | 2022-06-17 | 2022-09-09 | 石家庄铁道大学 | Construction method for assembling porous continuous steel truss girder cantilever |
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| CN109868750A (en) * | 2019-04-04 | 2019-06-11 | 中铁八局集团有限公司 | A kind of freely-supported steel truss girder four-point supporting pushing tow system and pushing method |
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| CN111733703A (en) * | 2020-07-02 | 2020-10-02 | 中国建筑第八工程局有限公司 | Accumulated dragging and pushing construction mechanism for bridge structure and construction method thereof |
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| CN115030060B (en) * | 2022-06-17 | 2024-05-14 | 石家庄铁道大学 | Porous continuous steel truss cantilever assembling construction method |
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