CN104060540B - A kind of cable of space cable suspension bridge false stull and construction method for hanging thereof - Google Patents

A kind of cable of space cable suspension bridge false stull and construction method for hanging thereof Download PDF

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Publication number
CN104060540B
CN104060540B CN201410242173.4A CN201410242173A CN104060540B CN 104060540 B CN104060540 B CN 104060540B CN 201410242173 A CN201410242173 A CN 201410242173A CN 104060540 B CN104060540 B CN 104060540B
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China
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main push
cable
towing rope
cord clip
draw
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CN201410242173.4A
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Chinese (zh)
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CN104060540A (en
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王晓明
李红玉
陈�峰
胡明
杨纪鹏
甄宁
胡泽峰
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长安大学
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Publication of CN104060540A publication Critical patent/CN104060540A/en
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Publication of CN104060540B publication Critical patent/CN104060540B/en

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Abstract

Of the present inventionly provide a kind of cable of space cable suspension bridge false stull and construction method for hanging thereof, it comprises the following steps: first install main push-towing rope, secondly by span centre, 1/4 across, 3/4 across place, truss is installed and is formed into bridge Spatial Cable face to supportting empty cable, then cord clip and hoist cable are installed, finally lift steel box-girder.This method adopts first sets up the construction method that main push-towing rope lifts stiff girder again, can ensure the navigation requirement of construction period, overcome the drawback of establishing falsework; By arranging truss stull, main push-towing rope can be realized and be transitioned into into bridge Spatial Cable shape by empty cable horizontal alignment, without the need to cord clip is carried out direction across bridge pre-deflection, only to vertical dip angle, cord clip need be installed with along bridge by hoist cable under bridge completion state, ensure that in steel box-girder hoisting process, cord clip otic placode and hoist cable otic placode place do not produce bending.

Description

A kind of cable of space cable suspension bridge false stull and construction method for hanging thereof
Technical field
The invention belongs to bridge field, relate to cable of space cable suspension bridge, be specifically related to a kind of cable of space cable suspension bridge false stull and construction method for hanging thereof.
Background technology
Traditional suspension bridge is generally plane rope shape earth anchored suspension bridge, comprises main push-towing rope, hoist cable, stiff girder, king-tower and main push-towing rope anchorage element.Main push-towing rope and hoist cable are positioned at same vertical plane and form a cable rope face, and namely main push-towing rope only has vertical sag and do not have horizontal sag, and whole hoist cable vertical hangs and do not have direction across bridge inclination angle.The cable rope face that tradition suspension bridge is often parallel to each other by two forms.Tradition suspension bridge adopts lifting construction, i.e. " First cable later girder " method, and step is as follows: road sets up main push-towing rope to ①Mao, and main cable alignment is now called empty cable shape; 2. hoist cable cord clip is installed on main push-towing rope; 3. install hoist cable, the upper end of hoist cable is connected with cord clip; 4. stiff girder is lifted, in hoist cable lower end lifting stiff girder beam section, until all beam sections have lifted, now temporarily hinged between each beam section; 5. adjust stiff girder linear, be welded as entirety; 6. the second phase mats formation, removes cat road.
Because traditional main rope of suspension bridge and hoist cable are positioned at same vertical plane, so in above-mentioned lifting construction process, the installation of step 2. hoist cable cord clip is without the need to considering direction across bridge inclination angle, and directly in cable rope face, vertical positioning instant can.
Relatively traditional suspension bridge, the maximum feature of cable of space cable suspension bridge is: the face that main push-towing rope and hoist cable are formed is a space curved surface, and main push-towing rope not only has vertical sag to also have horizontal sag, and hoist cable direction across bridge is from top to bottom towards outer incline and inclination angle is different.
Main push-towing rope pulls open to a certain extent by the hoist cable that cable of space cable suspension bridge tilts due to direction across bridge, the hoist cable of cable of space cable suspension bridge and main push-towing rope all have to be protected to power, the hoist cable that direction across bridge tilts and stiff girder form a stable triangle, stiff girder is clamped by the direction across bridge horizontal component in often pair of oblique hoist cable, make girder have the restoring force of similar pendulum, thus improve overall torsional stiffness.Its dynamic performance superiority of cable of space cable suspension bridge, wind loading rating is strong, and its linear grace, moulding is novel, more and more favors by people.
The advantage of cable of space cable suspension bridge lifting construction: according to the difference of anchor type, cable of space cable suspension bridge can be divided into ground anchor type and self-anchoring type.
For cable of space cable earth anchored suspension bridge, can build according to " First cable later girder " construction method of plane rope shape earth anchored suspension bridge.
For cable of space cable self-anchored suspension bridge, traditional construction method is " after first beam cable ", namely---> support sets up girder---> sets up main push-towing rope to set up support, and main push-towing rope two ends are anchored in beam-ends---> stretch-draw hoist cable---the > second phase mats formation---> striking.This method due to must full framing be set up, inevitably interference navigation channel or road traffic, and exist large span set up support costly, many, the safety of unsafe factor and the problem such as duration risk is high.
By adopting relevant temporary measure, cable of space cable self-anchored suspension bridge also can be built by " First cable later girder " construction method, so not only avoids because setting up the economy and safety problem that support brings, while can avoid to traffic such as navigation channels interference.
Cable of space cable suspension bridge lifting construction needs the problem overcome: for cable of space cable suspension bridge, no matter adopt " after first beam cable " method or " First cable later girder " method, there is the following problem needing to solve in capital: the cable finish stage after main cable erection is plane rope shape, namely only have vertical sag there is no horizontal sag, differ greatly in direction across bridge position with the Spatial Cable shape under bridge completion state.Therefore, need the cord clip direction across bridge inclination angle of adjustment comparatively large when hoist cable cord clip is installed, control difficulty high, to such an extent as to hoist cable otic placode cannot insert cord clip otic placode, cause hoist cable to install, even if be inserted in cord clip otic placode and hoist cable otic placode place easily produces larger bending, reduce the application life of hoist cable.
For the cable of space cable suspension bridge of " after the first beam cable " method of employing construction, current solution adopts interim hoist cable laterally outwardly to be opened by empty cable, make empty cable shape at direction across bridge close to becoming bridge linear, and then hoist cable cord clip is installed, the operations such as stretch-draw hoist cable, remove interim hoist cable after waiting the second phase to mat formation.The upper end of interim hoist cable is connected with the interim hoist cable cord clip of main push-towing rope, and lower end is fixed on the girder of having constructed.
Above-mentioned interim hoist cable scheme needs anchoring lower ends to support, but for the cable of space cable suspension bridge that " First cable later girder " method of employing is constructed, because girder is not yet constructed, there is not anchoring lower ends and support, therefore interim hoist cable scheme cannot use.In addition, unobstructed in order to ensure the traffic such as navigation channel, interim anchoring lower ends is set and supports and certainly will block the traffic such as navigation channel, therefore interim hoist cable scheme cannot use equally.
Summary of the invention
For prior art Problems existing, the object of the invention is to for cable of space cable suspension bridge lifting construction provides a kind of stull, make in steel box-girder hoisting process, without the need to by the pre-deflection of hoist cable cord clip, both can ensure that hoist cable otic placode inserted cord clip otic placode smoothly, hoist cable is installed carry out smoothly, can ensure that again cord clip otic placode and hoist cable otic placode do not produce bending, not affect the application life of hoist cable.
Another object of the present invention is to, for cable of space cable suspension bridge provides a kind of construction method for hanging, overcome the defect of existing construction method interference navigation channel traffic.
In order to realize above-mentioned technical assignment, the present invention adopts following technical scheme to be achieved:
A kind of cable of space cable suspension bridge false stull, comprise crossbeam and main push-towing rope to draw and move interim cord clip, described crossbeam comprises three parallel truss, and every sheet truss comprises upper chord, lower chord, montant and brace, is connected for overall between three truss frame by cross bar with skew back bar;
Bottom crossbeam, two ends are provided with operating platform separately, crossbeam 1 bottom symmetrical between two operating platforms is provided with two only to frame and two reaction frames, two are only arranged on bottom crossbeam to frame close crossbeam center symmetry, distance when two to be only less than cable of space cable suspension bridge be empty cable shape to the distance between frame between two main push-towing ropes; Two reaction frames to be arranged on bottom crossbeam 1 away from crossbeam center symmetry and near operating platform, the distance between two reaction frames be greater than cable of space cable suspension bridge be into bridge linear time two main push-towing ropes between distance;
Described main push-towing rope draws and moves interim cord clip and comprise left half cord clip and right half cord clip, left half cord clip and right half cord clip merge the clamping main push-towing rope that is fixed together, the top of left half cord clip and right half cord clip is provided with main push-towing rope and draws and move guide rail groove, main push-towing rope draws and moves guide rail groove and move along the lower chord of crossbeam, left half cord clip or right half cord clip is fixedly installed fining twisted steel anchoring pullover;
The lower chord of crossbeam is held on main push-towing rope and draws the main push-towing rope moved on interim cord clip to draw to move in guide rail groove, and three lower chords of crossbeam draw the main push-towing rope moving interim cord clip to draw as main push-towing rope and move guide rail; One end near operating platform on reaction frame is provided with jack, draw the one end moving fining twisted steel be anchored in main push-towing rope draw the fining twisted steel anchoring moved on interim cord clip pullover in, the other end moving fining twisted steel is drawn to pass the tail end anchoring of reaction frame and jack, drawn by operation jack pair on the operational platform and move fining twisted steel and carry out stretch-draw, main push-towing rope is drawn and moves interim cord clip drive main push-towing rope transverse shifting, two main push-towing ropes are strutted by empty cable shape.
The present invention also has following technical characteristic:
Described stops to the security protection cable be provided with between frame and reaction frame for ensureing only to frame and reaction frame cooperative bearing.
The lower chord of described crossbeam 1 is the cross section that a pair angle steel is welded is the chord member of rectangle, it is the groove that the three pairs of steel plates be vertically welded in respectively on left half cord clip and right half cord clip are formed that corresponding main push-towing rope draw the main push-towing rope moved on interim cord clip to draw to move guide rail groove, cross section is that the lower chord of rectangle is shelved on main push-towing rope and draws and move on guide rail groove, main push-towing rope is drawn move guide rail groove to move along the lower chord of crossbeam.
The lower chord of described crossbeam is the chord member of I-shaped die, it is the groove that the three pairs of angle steel be welded on respectively on left half cord clip and right half cord clip are formed that corresponding main push-towing rope draw the main push-towing rope moved on interim cord clip to draw to move guide rail groove, the lower chord that the groove that the three pairs of angle steel are formed is stuck in I-shaped die makes main push-towing rope draw move guide rail groove to move along the lower chord of crossbeam.
Adopt a cable of space cable suspension bridge construction method for hanging for described false stull, the method is carried out according to following steps:
Step one, main push-towing rope is installed in cat road, forms the empty cable shape of main push-towing rope;
Step 2, at the span centre, 1/4 of main push-towing rope across respectively main push-towing rope being drawn across place a left side half cord clip that moves interim cord clip with 3/4 and right half cord clip is fastening is arranged on main push-towing rope;
Step 3, the crossbeam of the cable of space cable suspension bridge false stull at synchronous lifting 1/4 cross-location place of main push-towing rope and 3/4 cross-location place of main push-towing rope, the lower chord of crossbeam be placed in respectively 1/4 across with 3/4 across main push-towing rope draw the main push-towing rope moved on false stull to draw to move in guide rail groove; Main push-towing rope to draw with temporary locking wire rope by cat road and moves interim cord clip and lower chord is connected as a single entity, ensure that crossbeam 1 is stablized; Cat road move together with fining twisted steel one end and main push-towing rope draw that the fining twisted steel anchoring moving interim cord clip is pullover and be anchored at by drawing, and will draw with temporary locking wire rope and move fining twisted steel and lower chord is connected as a single entity, on the operational platform, will the other end moving fining twisted steel be drawn to be anchored in jack tail end through reaction frame; Progressively loosen and remove temporary locking wire rope, start jack pair on the operational platform to draw and move fining twisted steel and carry out stretch-draw, 1/4 carries out stretch-draw across the main push-towing rope with 3/4 cross-location place simultaneously, drawn by main push-towing rope and move interim cord clip drive main push-towing rope transverse shifting, make main push-towing rope horizontal spacing to equal under the linear state of bridge 1/4 across and 3/4 cross-location place cable between lateral separation, locking is drawn and is moved fining twisted steel;
Step 4, after 1/4 cross-location place of main push-towing rope and 3/4 cross-location place have synchronously lifted, lifting construction is carried out according to the method identical with step 3 in the span centre position of main push-towing rope, lateral separation between the cable making the horizontal spacing of the span centre position of main push-towing rope equal into span centre position under the linear state of bridge, locking is drawn and is moved fining twisted steel;
Step 5, installs hoist cable cord clip, directly according to the hoist cable cord clip angle orientation become under the linear state of bridge;
Step 6, install hoist cable, hoist cable upper end is connected with hoist cable cord clip, and lifting steel box girder segment is also connected with hoist cable lower end, temporarily hinged between each sections of steel box-girder;
Step 7, by monitoring objective, adjustment steel box-girder is linear to corresponding absolute altitude, and steel box girder segment is welded into entirety;
Step 8, remove jack and draw and move fining twisted steel, cable of space cable suspension bridge false stull is taken off in lifting, and dismounting main push-towing rope draws and moves interim cord clip, main push-towing rope anticorrosive construction, and remove cat road, carry out Surfacing Construction, it is linear that main push-towing rope is finally formed into bridge.
Only to hanging security protection cable between frame and reaction frame in step 3, remove jack in step 8 and draw move fining twisted steel after remove security protection cable.
Method of the present invention compared with the existing methods, has following Advantageous Effects:
False stull of the present invention, Stability Analysis of Structures, member stress is clear and definite, and erection is convenient with operating process.
Adopt false stull construction technology, make that direction across bridge is linear to be consistent with the direction across bridge of bridge completion state is linear, ensure that free cable is linear to space by horizontal alignment gentle transition, in steel box-girder hoisting process, without the need to by cord clip pre-deflection, both can ensure that hoist cable otic placode inserted cord clip otic placode smoothly, and hoist cable installed and carries out smoothly, can ensure that again cord clip otic placode and hoist cable otic placode do not produce bending, not affect the application life of hoist cable.
The present invention adopts the First cable later girder construction method of false stull, navigation channel can not be taken in work progress, do not affect navigation channel normal traffic, save the expense setting up support, decrease unsafe factor, reduce construction risk, construction technology is simple and reliable, easy construction, construction speed is fast, cost economic.
Accompanying drawing explanation
Fig. 1 of the present inventionly faces structural representation.
Fig. 2 be Fig. 1 A to B to structural representation, eliminate in figure only to frame.
The cross section structure schematic diagram of Fig. 3 to be lower chord cross section be crossbeam of rectangle.
Fig. 4 is that the main push-towing rope used with the beam engagement of Fig. 3 draws the perspective view of moving interim cord clip.
Fig. 5 is the main TV structure schematic diagram of Fig. 4.
Fig. 6 is the plan structure schematic diagram of Fig. 4.
Fig. 7 is the left TV structure schematic diagram of Fig. 4.
The cross section structure schematic diagram of Fig. 8 to be lower chord cross section be crossbeam of I-shaped die.
Fig. 9 is that the main push-towing rope used with the beam engagement of Fig. 8 draws the perspective view of moving interim cord clip.
Figure 10 is the left TV structure schematic diagram of Fig. 9.
Figure 11 is the main TV structure schematic diagram of cable of space cable suspension bridge.
Figure 12 is the plan structure schematic diagram of cable of space cable suspension bridge.
Figure 13 is the C place structure for amplifying schematic diagram of Figure 11.
Figure 14 is the empty cable shape schematic diagram of cable of space cable suspension bridge.
Figure 15 be cable of space cable suspension bridge strut linear schematic diagram.
Figure 16 is the linear schematic diagram of one-tenth bridge of cable of space cable suspension bridge.
In figure, the implication of each label is: 1-crossbeam, (1-1)-truss, (1-2)-upper chord, (1-3)-lower chord, (1-4)-montant, (1-5)-brace, (1-6)-cross bar, (1-7)-skew back bar, 2-main push-towing rope draws and moves interim cord clip, (2-1)-left half cord clip, (2-2)-right half cord clip, (2-3)-main push-towing rope draws and moves guide rail groove, (2-4)-fining twisted steel anchoring is pullover, 3-operating platform, 4-is only to frame, 5-reaction frame, 6-main push-towing rope, 7-jack, 8-draws and moves fining twisted steel, 9-security protection cable, 10-cat road, 11-hoist cable cord clip, 12-hoist cable, 13-steel box-girder, 14-king-tower.
Below in conjunction with drawings and Examples, particular content of the present invention is described in more detail.
Detailed description of the invention
Defer to technique scheme, below provide specific embodiments of the invention, it should be noted that the present invention is not limited to following specific embodiment, all equivalents done on technical scheme basis all fall into protection scope of the present invention.
Embodiment:
The present embodiment provides a kind of cable of space cable suspension bridge false stull, comprise crossbeam 1 and main push-towing rope to draw and move interim cord clip 2, it is characterized in that: described crossbeam 1 comprises three parallel truss 1-1, every sheet truss 1-1 comprises upper chord 1-2, lower chord 1-3, montant 1-4 and brace 1-5, is connected for overall between three truss frame 1-1 by cross bar 1-6 with skew back bar 1-7;
Bottom crossbeam 1, two ends are provided with operating platform 3 separately, crossbeam 1 bottom symmetrical between two operating platforms 3 is provided with two only to frame 4 and two reaction frames 5, two are only arranged on bottom crossbeam 1 to frame 4 near crossbeam 1 center symmetry, distance when two to be only less than cable of space cable suspension bridge be empty cable shape to the distance between frame 4 between two main push-towing ropes 6; Two reaction frames 5 to be arranged on bottom crossbeam 1 away from crossbeam 1 center symmetry and distance between operating platform 3, two reaction frames 5 be greater than cable of space cable suspension bridge be into bridge linear time two main push-towing ropes 6 between distance;
Described main push-towing rope draws and moves interim cord clip 2 and comprise left half cord clip 2-1 and right half cord clip 2-2, left half cord clip 2-1 and right half cord clip 2-2 merges the clamping main push-towing rope 6 that is fixed together, the top of left half cord clip 2-1 and right half cord clip 2-2 is provided with main push-towing rope and draws and move guide rail groove 2-3, main push-towing rope draws and moves guide rail groove 2-3 and move along the lower chord 1-3 of crossbeam 1, and left half cord clip 2-1 or right half cord clip 2-2 is fixedly installed the pullover 2-4 of fining twisted steel anchoring;
The lower chord 1-3 of crossbeam 1 is held on main push-towing rope and draws the main push-towing rope moved on interim cord clip 2 to draw to move in guide rail groove 2-3, and three lower chord 1-3 of crossbeam 1 draw the main push-towing rope moving interim cord clip 2 to draw as main push-towing rope and move guide rail; One end near operating platform 3 on reaction frame 5 is provided with jack 7, drawing the one end moving fining twisted steel 8 to be anchored in main push-towing rope draws in the pullover 2-4 of fining twisted steel anchoring that moves on interim cord clip 2, draw the other end moving fining twisted steel 8 through the tail end anchoring of reaction frame 5 with jack 7, operating platform 3 is moved fining twisted steel 8 by operation jack 7 carry out stretch-draw to drawing, main push-towing rope is drawn move interim cord clip 2 to drive main push-towing rope 6 transverse shifting, two main push-towing ropes 6 are strutted into bridge by empty cable shape linear.
Only to the security protection cable 9 be provided with between frame 4 and reaction frame 5 for ensureing only to frame 4 and reaction frame 5 cooperative bearing.
A kind of selection, the lower chord 1-3 of crossbeam 1 is the cross section that a pair angle steel is welded is the chord member of rectangle, it is the groove that the three pairs of steel plates be vertically welded in respectively on left half cord clip 2-1 and right half cord clip 2-2 are formed that corresponding main push-towing rope draw the main push-towing rope moved on interim cord clip 2 to draw to move guide rail groove 2-3, cross section is that the lower chord 1-3 of rectangle is shelved on main push-towing rope and draws and move on guide rail groove 2-3, main push-towing rope is drawn move guide rail groove 2-3 to move along the lower chord 1-3 of crossbeam 1.
Another kind of selection, the lower chord 1-3 of crossbeam 1 is the chord member of I-shaped die, it is the groove that the three pairs of angle steel be welded on respectively on left half cord clip 2-1 and right half cord clip 2-2 are formed that corresponding main push-towing rope draw the main push-towing rope moved on interim cord clip 2 to draw to move guide rail groove 2-3, the lower chord 1-3 that the groove that the three pairs of angle steel are formed is stuck in I-shaped die makes main push-towing rope draw move guide rail groove 2-3 to move along the lower chord 1-3 of crossbeam 1.
The crossbeam of the cable of space cable suspension bridge false stull of the present embodiment is the Bailey beam structure of 1500 × 900mm, long 34.12m.Cable of space cable suspension bridge false stull be provided with 2 cover 60t punching jack 7 with draw move that fining twisted steel 8 forms draw the system of moving.
The present embodiment provides a kind of cable of space cable suspension bridge construction method for hanging adopting described false stull, for cable of space cable suspension bridge adopt cable of space cable suspension bridge as is illustrated by figs. 11 and 12, main spanning footpath is arranged as (75+240+75) m, main span 240m is suspended-cable structure system, the height of king-tower 14 is 50m, the overall with of steel box-girder 13 is 41.6m, in across the spacing 6m of hoist cable 12.
The method is carried out according to following steps:
Step one, cat road 10 is installed main push-towing rope 6, and form the empty cable shape of main push-towing rope 6, now two main push-towing ropes are parallel to each other, and as shown in figure 14, horizontal spacing is 18.65m.
Step 2, draws a left side half cord clip 2-1 that moves interim cord clip 2 and right half cord clip 2-4 to be fastened by bolts across place to be arranged on main push-towing rope 6 across with 3/4 at the span centre, 1/4 of main push-towing rope 6 respectively by main push-towing rope.
Step 3, the crossbeam 1 of the cable of space cable suspension bridge false stull at 1/4 cross-location place of synchronous lifting main push-towing rope 6 and 3/4 cross-location place of main push-towing rope 6, the lower chord 1-3 of crossbeam 1 be placed in respectively 1/4 across with 3/4 across main push-towing rope draw the main push-towing rope moved on false stull to draw to move in guide rail groove 2-3; Main push-towing rope to draw with temporary locking wire rope by cat road 10 and moves interim cord clip 2 and be connected as a single entity with lower chord 1-3, ensure that crossbeam 1 is stablized, only hanging security protection cable 9 between frame 4 and reaction frame 5; Cat road 10 moves fining twisted steel 8 one end and main push-towing rope draw together with the pullover 2-4 of fining twisted steel anchoring moving interim cord clip 2 is anchored at by drawing, and will draw with temporary locking wire rope and move fining twisted steel 8 and be connected as a single entity with lower chord 1-3, on operating platform 3, be anchored in jack 7 tail end by drawing the other end moving fining twisted steel 8 through reaction frame 5; Progressively loosen and remove temporary locking wire rope, operating platform 3 starts jack 7 move fining twisted steel 8 carry out stretch-draw to drawing, 1/4 carries out stretch-draw across the main push-towing rope 6 with 3/4 cross-location place simultaneously, drawn by main push-towing rope and move interim cord clip 2 and drive main push-towing rope 6 transverse shifting, make main push-towing rope 6 horizontal spacing to equal under the linear state of bridge 1/4 across and 3/4 cross-location place cable between lateral separation distance 28.05m, drawn by nut locking and move fining twisted steel 8.
Step 4, after 1/4 cross-location place of main push-towing rope 6 and 3/4 cross-location place have synchronously lifted, lifting construction is carried out according to the method identical with step 3 in the span centre position of main push-towing rope 6, lateral separation 31.35m between the cable making the horizontal spacing of the span centre position of main push-towing rope 6 equal into span centre position under the linear state of bridge, drawn by nut locking and move fining twisted steel 8, obtain as shown in figure 15 strut linear.
Step 5, installs hoist cable cord clip 11, directly according to hoist cable cord clip 11 angle orientation become under the linear state of bridge.
Step 6, install hoist cable 12, hoist cable 12 upper end is connected with hoist cable cord clip 11, and lifting steel box-girder 13 sections is also connected with hoist cable 12 lower end, temporarily hinged between each sections of steel box-girder 13.
Step 7, by monitoring objective, adjustment steel box-girder 13 is linear, and to corresponding absolute altitude, steel box-girder 13 sections is welded into entirety, and now, the wire shaped of main push-towing rope 6 is closely close to becoming bridge wire shaped.
Step 8, remove jack 7 and draw and move fining twisted steel 8, remove security protection cable 9, cable of space cable suspension bridge false stull is taken off in lifting, and dismounting main push-towing rope draws and moves interim cord clip 2, main push-towing rope 6 anticorrosive construction, remove cat road 10, carry out Surfacing Construction, comprise installation guardrail, lampposts etc., the one-tenth bridge that main push-towing rope 6 is finally formed as shown in figure 16 is linear.

Claims (6)

1. a cable of space cable suspension bridge false stull, comprise crossbeam (1) and main push-towing rope to draw and move interim cord clip (2), it is characterized in that: described crossbeam (1) comprises three parallel truss (1-1), every sheet truss (1-1) comprises upper chord (1-2), lower chord (1-3), montant (1-4) and brace (1-5), is connected for overall between three truss frame (1-1) by cross bar (1-6) with skew back bar (1-7);
Two ends, crossbeam (1) bottom are provided with operating platform (3) separately, crossbeam (1) bottom symmetrical between two operating platforms (3) is provided with two only to frame (4) and two reaction frames (5), two are only arranged on crossbeam (1) bottom to frame (4) near crossbeam (1) center symmetry, distance when two to be only less than cable of space cable suspension bridge be empty cable shape to the distance between frame (4) between two main push-towing ropes (6); Two reaction frames (5) are arranged on crossbeam (1) bottom away from crossbeam (1) center symmetry and near operating platform (3), the distance between two reaction frames (5) be greater than cable of space cable suspension bridge be into bridge linear time two main push-towing ropes (6) between distance;
Described main push-towing rope draws and moves interim cord clip (2) and comprise left half cord clip (2-1) and right half cord clip (2-2), left half cord clip (2-1) and right half cord clip (2-2) merge clamping main push-towing rope (6) that is fixed together, the top of left half cord clip (2-1) and right half cord clip (2-2) is provided with main push-towing rope and draws and move guide rail groove (2-3), main push-towing rope draws and moves guide rail groove (2-3) and move along the lower chord (1-3) of crossbeam (1), left half cord clip (2-1) or right half cord clip (2-2) are fixedly installed fining twisted steel anchoring pullover (2-4),
The lower chord (1-3) of crossbeam (1) is held on main push-towing rope and draws the main push-towing rope moved on interim cord clip (2) to draw to move in guide rail groove (2-3), and three lower chords (1-3) of crossbeam (1) are drawn the main push-towing rope moving interim cord clip (2) to draw as main push-towing rope and moved guide rail, the upper one end near operating platform (3) of reaction frame (5) is provided with jack (7), drawing the one end moving fining twisted steel (8) to be anchored in main push-towing rope draws in the fining twisted steel anchoring pullover (2-4) that moves on interim cord clip (2), draw the other end moving fining twisted steel (8) through the tail end anchoring of reaction frame (5) with jack (7), operating platform (3) is moved fining twisted steel (8) by operation jack (7) carry out stretch-draw to drawing, main push-towing rope is drawn and moves interim cord clip (2) drive main push-towing rope (6) transverse shifting, two main push-towing ropes (6) are strutted by empty cable shape.
2. cable of space cable suspension bridge false stull as claimed in claim 1, is characterized in that: the described security protection cable (9) stopped to being provided with between frame (4) and reaction frame (5) for ensureing only to frame (4) and reaction frame (5) cooperative bearing.
3. cable of space cable suspension bridge false stull as claimed in claim 1, it is characterized in that: the lower chord (1-3) of described crossbeam (1) is the cross section that a pair angle steel is welded is the chord member of rectangle, it is the groove that the three pairs of steel plates be vertically welded in respectively on left half cord clip (2-1) and right half cord clip (2-2) are formed that corresponding main push-towing rope draw the main push-towing rope moved on interim cord clip (2) to draw to move guide rail groove (2-3), cross section is that the lower chord (1-3) of rectangle is shelved on main push-towing rope and draws and move on guide rail groove (2-3), main push-towing rope is drawn move guide rail groove (2-3) to move along the lower chord (1-3) of crossbeam (1).
4. cable of space cable suspension bridge false stull as claimed in claim 1, it is characterized in that: the chord member that the lower chord (1-3) of described crossbeam (1) is I-shaped die, it is the groove that the three pairs of angle steel be welded on respectively on left half cord clip (2-1) and right half cord clip (2-2) are formed that corresponding main push-towing rope draw the main push-towing rope moved on interim cord clip (2) to draw to move guide rail groove (2-3), the lower chord (1-3) that the groove that the three pairs of angle steel are formed is stuck in I-shaped die make main push-towing rope draw move guide rail groove (2-3) to move along the lower chord (1-3) of crossbeam (1).
5. adopt a cable of space cable suspension bridge construction method for hanging for the false stull as described in claim as arbitrary in Claims 1-4, it is characterized in that: the method is carried out according to following steps:
Step one, Mao Dao (10) installs main push-towing rope (6), forms the empty cable shape of main push-towing rope (6);
Step 2, the span centre in main push-towing rope (6), 1/4 is across respectively main push-towing rope being drawn across place a left side half cord clip (2-1) of moving interim cord clip (2) with 3/4 and right half cord clip (2-4) is fastening is arranged on main push-towing rope (6);
Step 3, the crossbeam (1) of the cable of space cable suspension bridge false stull at 1/4 cross-location place of synchronous lifting main push-towing rope (6) and 3/4 cross-location place of main push-towing rope (6), the lower chord (1-3) of crossbeam (1) be placed in respectively 1/4 across with 3/4 across main push-towing rope draw the main push-towing rope moved on false stull to draw to move in guide rail groove (2-3); Move interim cord clip (2) be connected as a single entity with lower chord (1-3) upper main push-towing rope to be drawn with temporary locking wire rope of Mao Dao (10), ensure that crossbeam (1) is stable; Move fining twisted steel (8) one end and main push-towing rope draw together with the fining twisted steel anchoring moving interim cord clip (2) pullover (2-4) is anchored at by drawing Mao Dao (10) is upper, and will draw with temporary locking wire rope and move fining twisted steel (8) and lower chord (1-3) and be connected as a single entity, on operating platform (3), be anchored in jack (7) tail end by drawing the other end moving fining twisted steel (8) through reaction frame (5); Progressively loosen and remove temporary locking wire rope, operating platform (3) starts jack (7) move fining twisted steel (8) carry out stretch-draw to drawing, 1/4 carries out stretch-draw across the main push-towing rope (6) with 3/4 cross-location place simultaneously, drawn by main push-towing rope and move interim cord clip (2) drive main push-towing rope (6) transverse shifting, make main push-towing rope (6) horizontal spacing to equal under the linear state of bridge 1/4 across and 3/4 cross-location place cable between lateral separation, locking is drawn and is moved fining twisted steel (8);
Step 4, after 1/4 cross-location place of main push-towing rope (6) and 3/4 cross-location place have synchronously lifted, lifting construction is carried out according to the method identical with step 3 in the span centre position of main push-towing rope (6), lateral separation between the cable making the horizontal spacing of the span centre position of main push-towing rope (6) equal into span centre position under the linear state of bridge, locking is drawn and is moved fining twisted steel (8);
Step 5, installs hoist cable cord clip (11), directly according to hoist cable cord clip (11) angle orientation become under the linear state of bridge;
Step 6, hoist cable (12) is installed, hoist cable (12) upper end is connected with hoist cable cord clip (11), and lifting steel box-girder (13) sections is also connected with hoist cable (12) lower end, temporarily hinged between steel box-girder (13) each sections;
Step 7, by monitoring objective, adjustment steel box-girder (13) is linear to corresponding absolute altitude, and steel box-girder (13) sections is welded into entirety;
Step 8, remove jack (7) and draw and move fining twisted steel (8), cable of space cable suspension bridge false stull is taken off in lifting, dismounting main push-towing rope draws and moves interim cord clip (2), main push-towing rope (6) anticorrosive construction, remove cat road (10), carry out Surfacing Construction, it is linear that main push-towing rope (6) is finally formed into bridge.
6. construction method for hanging as claimed in claim 5, it is characterized in that: in step 3, only hanging security protection cable (9) between frame (4) and reaction frame (5), remove jack (7) in step 8 and draw and move fining twisted steel (8) and remove security protection cable (9) afterwards.
CN201410242173.4A 2014-06-03 2014-06-03 A kind of cable of space cable suspension bridge false stull and construction method for hanging thereof CN104060540B (en)

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CN105780658B (en) * 2016-03-11 2017-11-14 中国建筑第六工程局有限公司 A kind of Spatial Cable face structural cables system is laterally to pulling method
CN106149569B (en) * 2016-08-24 2018-02-02 长安大学 The transforming methods of structural system of self-anchored suspension bridge First cable later girder construction
CN107059650B (en) * 2017-06-28 2019-06-28 四川公路桥梁建设集团有限公司 A kind of main rope of suspension bridge thrustor
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CN110468724B (en) * 2019-08-30 2020-12-01 西安市政设计研究院有限公司 Auxiliary device for main cable construction of space cable suspension bridge and main cable construction method
CN110565535B (en) * 2019-09-29 2021-01-26 中铁大桥局集团有限公司 Suspension bridge space main cable linear adjusting device and adjusting method

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