CN102493348B - Transverse limitation and correction device for incremental launching of bridge - Google Patents
Transverse limitation and correction device for incremental launching of bridge Download PDFInfo
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- CN102493348B CN102493348B CN201110420959.7A CN201110420959A CN102493348B CN 102493348 B CN102493348 B CN 102493348B CN 201110420959 A CN201110420959 A CN 201110420959A CN 102493348 B CN102493348 B CN 102493348B
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Abstract
The invention relates to the technical field of incremental launching of bridges, in particular to a transverse limitation and correction device for incremental launching of a bridge, which comprises a counter-force pedestal (5). The upper portion of the counter-force pedestal (5) is provided with a recess, the front and the top of the recess are open, a horizontal jack (4) and a moving pressure bar (3) are horizontally disposed in the recess, the horizontal jack (4) is disposed between the counter-force pedestal (5) and the moving pressure bar (3), and a rolling friction type horizontal limiter (1) is hinged to the moving pressure bar (3) through a pin (2). By means of the transverse limitation and correction device, passive transverse limitation of a steel truss in incremental launching is improved, passive correction is changed into active correction, and accordingly, difficulty in controlling transverse offset of the steel truss in incremental launching is reduced greatly.
Description
Technical field
The present invention relates to bridge incremental launching construction technical field, is a kind of cross spacing for bridge incremental launching construction and deviation correcting device specifically.Be applicable to cross spacing and the correction of large-tonnage steel trusses incremental launching construction.
Background technology
In existing steel truss girder incremental launching construction process, by horizontal limit devices is set, steel truss girder or slide block are carried out spacing, at steel truss girder incremental launching construction, complete after certain stage, then adopt the steel truss girder that transverse horizontal jack pair is static to rectify a deviation.Although the method can meet cross spacing and correction in part steel truss girder incremental launching construction, has following defect:
1, horizontal limit devices can not adapt to steel truss girder corner off normal, and steel truss girder or slide block easily produce stuck phenomenon, and cross spacing frictional resistance is large;
2,, in steel truss girder incremental launching construction process, horizontal limit devices only can carry out passive cross spacing to steel truss girder;
3, after the steel truss girder stage, incremental launching construction completed, adopt large-tonnage level jack laterally to rectify a deviation to static steel truss girder, correction difficulty and risk are larger.
Due to above-mentioned shortcoming, make in large-tonnage steel trusses incremental launching construction the horizontal off normal of steel truss girder control difficulty very big, plant equipment drops into larger, and construction risk is larger, the problem that in the time of even cannot solving large span large-tonnage steel trusses pushing tow, horizontal off normal is controlled.
Summary of the invention
For the defect existing in prior art, the object of the present invention is to provide a kind of cross spacing for bridge incremental launching construction and deviation correcting device, improve the passive cross spacing in steel truss girder incremental launching construction, and passive correction is become to initiatively correction, thereby greatly reduce the difficulty of in steel truss girder pushing tow process, steel truss girder being carried out to horizontal off normal control.
For reaching above object, the technical scheme that the present invention takes is:
Cross spacing and a deviation correcting device for bridge incremental launching construction, is characterized in that, comprising:
Counter-force seat 5, counter-force seat 5 tops are provided with groove, and front side and the top of groove are provided with opening, and level jack 4 and movable depression bar 3 are placed horizontally in this groove, and level jack 4 is arranged between counter-force seat 5 and movable depression bar 3,
Rolling friction type horizontal limiting stopper 1 is hinged by bearing pin 2 with movable depression bar 3.
On the basis of technique scheme, between counter-force seat 5 and level jack 4, according to actual pitch, carry out pad.
On the basis of technique scheme, between the side of rolling friction type horizontal limiting stopper 1 and counter-force seat 5, leave gap A.
On the basis of technique scheme, described movable depression bar 3, for welding box structure, comprises the upper plate, the lower plate that be arranged in parallel up and down,
Upper plate, the lower plate of movable depression bar 3 is equipped with the otic placode arranging along direction across bridge, and described otic placode and upper plate, otic placode and lower plate are made into integration by a block plate, and otic placode is provided with pin shaft hole,
Rolling friction type horizontal limiting stopper 1 is inserted in the otic placode of movable depression bar 3, and hinged by bearing pin 2.
On the basis of technique scheme, rolling friction type horizontal limiting stopper 1 comprises: along vertical bridge to the roller box 1-2 arranging, formed by Plate Welding, in roller box 1-2, by wheel shaft 1-3, be equipped with two roller 1-1.
On the basis of technique scheme, counter-force seat 5 is formed by Plate Welding, and counter-force seat top board 5-2 is welded in the end face of counter-force seat 5, and is positioned at movable depression bar 3 tops, and by counter-force seat top board, 5-2 is fixed on movable depression bar 3 in groove 5-1.
On the basis of technique scheme, the groove 5-1 cross section of placing level jack 4 places is " U " shape section.
Cross spacing for bridge incremental launching construction of the present invention and deviation correcting device, improve the passive cross spacing in steel truss girder incremental launching construction, and passive correction is become to initiatively correction, thereby greatly reduce the difficulty of in steel truss girder pushing tow process, steel truss girder being carried out to horizontal off normal control.
Cross spacing for bridge incremental launching construction of the present invention and deviation correcting device, laterally correction and spacing uniting two into one, simplified construction technology; Laterally correction is carried out in steel truss girder incremental launching construction process, laterally correction only need provide a less active force, give the acceleration of the transverse movement of steel truss girder in slippage, thereby realize the object that steel truss girder progressively reduces off normal and reaches correction in slipping.Its horizontal correction counter-force of needing because overcoming stiction much smaller than prior art of correction counter-force, thus greatly reduce the difficulty of horizontal correction.
Cross spacing for bridge incremental launching construction of the present invention and deviation correcting device, have the following advantages:
1, steel truss girder incremental launching construction cross spacing and correction behavior unite two into one, and have reduced working procedure;
2, this device possesses the off normal that adapts to and limit steel truss girder, is conducive to reduce the frictional resistance in steel truss girder pushing tow process, has improved the service efficiency of continuous jack; Because the counter-force of laterally rectifying a deviation compared with prior art greatly reduces, greatly reduce the counter-force of horizontal correction, reduced the risk of difficulty of construction and steel truss girder correction;
3, simple in structure, constructability.
Accompanying drawing explanation
The present invention has following accompanying drawing:
Fig. 1 is apparatus of the present invention and steel truss girder, slipway beam relative position relation schematic diagram.
Fig. 2 is the facade arrangement diagram of apparatus of the present invention.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is rolling friction type horizontal limiting stopper and the facade structures figure of movable depression bar after bearing pin is hinged.
Fig. 5 is the top view of Fig. 4.
Fig. 6 is the facade structures figure of counter-force seat.
Fig. 7 is the top view of Fig. 6.
Fig. 8 is the 1-1 sectional drawing of Fig. 6.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 2,3, 4, the cross spacing for bridge incremental launching construction of the present invention and deviation correcting device, comprising:
Counter-force seat 5, counter-force seat 5 tops are provided with groove (being the 5-1 of groove shown in Fig. 6), and front side and the top of groove are provided with opening, and level jack 4 and movable depression bar 3 are placed horizontally in this groove, and level jack 4 is arranged between counter-force seat 5 and movable depression bar 3,
Rolling friction type horizontal limiting stopper 1 is hinged by bearing pin 2 with movable depression bar 3, for example: one end of movable depression bar 3 (front end) stretches out outside counter-force seat 5 from the opening part of groove front side, then hinged by bearing pin 2 and rolling friction type horizontal limiting stopper 1.
By the hinged object of bearing pin 2, be in slipping, to occur corner off normal for applicable steel truss girder.
On the basis of technique scheme, between counter-force seat 5 and level jack 4, according to actual pitch, carry out pad.
On the basis of technique scheme, as shown in Figure 3, between the side of rolling friction type horizontal limiting stopper 1 and counter-force seat 5, leave gap A.The setting of this gap A is in order to guarantee that rolling friction type horizontal limiting stopper 1 can rotate; The appearance and size of rolling friction type horizontal limiting stopper 1 is larger than counter-force seat 5, leaves gap A and can guarantee that rolling friction type horizontal limiting stopper 1 can not enter in the groove of counter-force seat 5, and can to steel truss girder, have the function of cross spacing together with counter-force seat 5.
On the basis of technique scheme, as shown in Figure 4,5, described movable depression bar 3, for welding box structure, comprises the upper plate, the lower plate that be arranged in parallel up and down,
Upper plate, the lower plate of movable depression bar 3 is equipped with the otic placode arranging along direction across bridge, described otic placode and upper plate, otic placode and lower plate are made into integration by a block plate, otic placode is provided with pin shaft hole, that is: otic placode is in fact a privileged site in upper plate, lower plate, rather than the parts that arrange separately, upper plate, lower plate are referred to as otic placode for assembling the part of rolling friction type horizontal limiting stopper 1, can be understood as: upper plate and lower plate arrange pin shaft hole by rolling friction type horizontal limiting stopper end, this position that pin shaft hole is set is referred to as otic placode
Rolling friction type horizontal limiting stopper 1 is inserted in the otic placode of movable depression bar 3, and hinged by bearing pin 2.
On the basis of technique scheme, as shown in Figure 5, rolling friction type horizontal limiting stopper 1 comprises: along vertical bridge to arrange, by Plate Welding, form roller box 1-2, in roller box 1-2, by wheel shaft 1-3, be equipped with two roller 1-1.This device lateral spacing with when correction, rolling friction type horizontal limiting stopper 1 is provided with two pressure-bearing rollers (roller 1-1) near steel truss girder one side, the friction between itself and steel truss girder is rolling friction; Between rolling friction type horizontal limiting stopper 1 and movable depression bar 3, adopt bearing pin 2 hinged to adapt to the corner off normal of steel truss girder, thereby improve the performance of cross spacing.
On the basis of technique scheme, as shown in Fig. 6,7,8, counter-force seat 5 is formed by Plate Welding, counter-force seat top board 5-2 is welded in the end face of counter-force seat 5, and be positioned at movable depression bar 3 tops, by counter-force seat top board, 5-2 is fixed on movable depression bar 3 in groove 5-1, that is: counter-force seat top board 5-2 coordinates with groove 5-1, movable depression bar 3 is fixed in groove 5-1, and movable depression bar 3 and rolling friction type horizontal limiting stopper 1 only can move by direction across bridge.
On the basis of technique scheme, as shown in Figure 8, the groove 5-1 cross section of placing level jack 4 places is " U " shape section, and the oil pressure pipe etc. of being convenient to level jack 4 can involve and arrange pad, convenient operation.Level jack 4 is positioned in the middle of the cross section of counter-force seat groove 5-1, counter-force seat 5 and slipway beam welding.
Bridge embodiment as shown in Figure 1, the bridge shown in this embodiment, is a double tower steel truss girder cable-stayed bridge (90m+240m+630m+240m+90m), and its end bay 240m+90m three-joist trussed steel beam adopts incremental launching method, and its maximum pushing tow weight is 22668t.
Fig. 1 is a facade arrangement diagram of the cross spacing for bridge incremental launching construction of the present invention and deviation correcting device and steel truss girder, slipway beam relative position relation.Lower chord outside, purlin, steel truss girder both sides respectively arranges a set of cross spacing for bridge incremental launching construction of the present invention and deviation correcting device (being designated hereinafter simply as cross spacing and deviation correcting device).
Cross spacing and the deviation correcting device course of work are as follows: the reserved certain spacing a of base plate outer edge line of cross spacing and deviation correcting device and purlin, limit box-shaped lower chord; Its objective is: if steel truss girder is by designing linear slippage, cross spacing does not contact with steel truss girder with deviation correcting device; When steel truss girder is when in slipping, the amount of offseting to one side is greater than a, cross spacing and deviation correcting device laterally indentation A(referring to Fig. 3); When the horizontal off normal of steel truss girder reaches a+A, need rectify a deviation to steel truss girder, now level jack 4 is top lifting by people, by movable depression bar 3 and rolling friction type horizontal limiting stopper 1 by steel truss girder to opposite direction pushing tow until design attitude; When this device is laterally rectified a deviation to steel truss girder, the effect counter-force of level jack 4 passes to slipway beam by counter-force seat 5 by correction counter-force.
The principle that cross spacing and deviation correcting device adopt is as follows:
Cross spacing and deviation correcting device are when cross spacing, rolling friction type horizontal limiting stopper 1 can adapt to the corner off normal occurring in steel truss girder pushing tow process, reduced the frictional resistance of cross spacing to steel truss girder, by rolling friction type horizontal limiting stopper 1, sliding friction is become to rolling friction (cross spacing counter-force becomes force of rolling friction from maximum static friction force or force of sliding friction), the frictional resistance while reducing the vertical bridge of steel truss girder to slippage;
From the textural size by rolling friction type horizontal limiting stopper 1, manufacture the size that is greater than counter-force seat 5 grooves, thereby realize the function that this device has cross spacing;
Cross spacing and deviation correcting device are when cross spacing, only need provide a less direction across bridge active force, give vertical bridge acceleration to direction across bridge motion of steel truss girder to slippage, steel truss girder just moves to bridge center line in slipping gradually at vertical bridge, thereby reach the object of correction, its correction counter-force is much smaller than the required maximum static friction force overcoming of the horizontal correction of prior art.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.
The content not being described in detail in this manual belongs to the known prior art of professional and technical personnel in the field.
Claims (6)
1. for cross spacing and the deviation correcting device of bridge incremental launching construction, it is characterized in that, comprising:
Counter-force seat (5), counter-force seat (5) top is provided with groove, front side and the top of groove are provided with opening, level jack (4) and movable depression bar (3) are placed horizontally in this groove, and level jack (4) is arranged between counter-force seat (5) and movable depression bar (3)
Rolling friction type horizontal limiting stopper (1) is hinged by bearing pin (2) with movable depression bar (3), between the side of rolling friction type horizontal limiting stopper (1) and counter-force seat (5), leaves gap A.
2. the cross spacing for bridge incremental launching construction as claimed in claim 1 and deviation correcting device, is characterized in that: between counter-force seat (5) and level jack (4), according to actual pitch, carry out pad.
3. the cross spacing for bridge incremental launching construction as claimed in claim 1 and deviation correcting device, is characterized in that: described movable depression bar (3), for welding box structure, comprises the upper plate, the lower plate that be arranged in parallel up and down,
Upper plate, the lower plate of movable depression bar (3) is equipped with the otic placode arranging along direction across bridge, and described otic placode and upper plate, otic placode and lower plate are made into integration by a block plate, and otic placode is provided with pin shaft hole,
Rolling friction type horizontal limiting stopper (1) is inserted in the otic placode of movable depression bar (3), and hinged by bearing pin (2).
4. the cross spacing for bridge incremental launching construction as claimed in claim 1 and deviation correcting device, it is characterized in that: rolling friction type horizontal limiting stopper (1) comprising: along vertical bridge to arrange, by Plate Welding, form roller box (1-2), in roller box (1-2), by wheel shaft (1-3), be equipped with two rollers (1-1).
5. the cross spacing for bridge incremental launching construction as claimed in claim 1 and deviation correcting device, it is characterized in that: counter-force seat (5) is formed by Plate Welding, counter-force seat top board (5-2) is welded in the end face of counter-force seat (5), and be positioned at movable depression bar (3) top, by counter-force seat top board (5-2), movable depression bar (3) be fixed in groove (5-1).
6. the cross spacing for bridge incremental launching construction as claimed in claim 5 and deviation correcting device, is characterized in that: groove (5-1) cross section that placement level jack (4) is located is " U " shape section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110420959.7A CN102493348B (en) | 2011-12-14 | 2011-12-14 | Transverse limitation and correction device for incremental launching of bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110420959.7A CN102493348B (en) | 2011-12-14 | 2011-12-14 | Transverse limitation and correction device for incremental launching of bridge |
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| CN102493348A CN102493348A (en) | 2012-06-13 |
| CN102493348B true CN102493348B (en) | 2014-12-10 |
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| CN103046759A (en) * | 2013-01-18 | 2013-04-17 | 上海建工一建集团有限公司 | Shielding steel plate correction construction technology |
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Owner name: GROUP CO., LTD., ZHONGTIE DAQIAO BUREAU Free format text: FORMER OWNER: CHINA ZHONGTIE MAJOR BRIDGE ENGINEERING CO., LTD. Effective date: 20150113 Free format text: FORMER OWNER: GROUP CO., LTD., ZHONGTIE DAQIAO BUREAU Effective date: 20150113 |
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Effective date of registration: 20150113 Address after: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No. Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 430074 Hubei province Wuhan Dongxin East Lake New Technology Development Zone Road SBI Venture Street No. 6 Building 12 layer Patentee before: China Zhongtie Major Bridge Engineering Co., Ltd. Patentee before: Group Co., Ltd., Zhongtie Daqiao Bureau |