CN100582372C - Multi-arch bridge rib vertical turning technical method - Google Patents
Multi-arch bridge rib vertical turning technical method Download PDFInfo
- Publication number
- CN100582372C CN100582372C CN200710168602A CN200710168602A CN100582372C CN 100582372 C CN100582372 C CN 100582372C CN 200710168602 A CN200710168602 A CN 200710168602A CN 200710168602 A CN200710168602 A CN 200710168602A CN 100582372 C CN100582372 C CN 100582372C
- Authority
- CN
- China
- Prior art keywords
- tower
- arch rib
- knotted rope
- arch
- vertical transfer
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000010276 construction Methods 0.000 claims abstract description 14
- 238000000034 methods Methods 0.000 claims abstract description 8
- 239000002965 ropes Substances 0.000 claims description 142
- CWFOCCVIPCEQCK-UHFFFAOYSA-N Chlorfenapyr Chemical compound data:image/svg+xml;base64,<?xml version='1.0' encoding='iso-8859-1'?>
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Abstract
Description
Technical field
The present invention relates to a kind of job practices of bridge, specifically the vertical transfer technical method of multispan continuous arch bridge arch rib in the bridge engineering.
Background technology
When conventional arch bridge carried out the arch rib vertical transfer, what generally carry out all was the vertical transfer of single span arch rib.Normally each is partly striden and respectively establishes a hitch Sarasota frame and anchor cable, knotted rope system in the vertical transfer of single span arch rib, and the stretch-draw of anchor cable and knotted rope is undertaken by jack continuously, and two and half to stride the vertical transfer of arch rib relatively independent, does not influence each other.For continuous arch bridge,,, will produce continuous jack and the too much problem of knotted rope pylon quantity if according to the construction of single span arch rib vertical transfer method because striding of vertical transfer is several more.For this reason, invented more cost effective multi-arch bridge rib vertical turning new technology.
Summary of the invention
The objective of the invention is characteristics, provide a kind of and be convenient to construct, the job practices of safe and reliable multi-arch bridge rib vertical turning at the multispan continuous arch bridge.
The present invention includes following steps:
Step 1, assembly unit limit tower knotted rope tower and middle tower knotted rope Tata frame, lifting station, mobile gantry crane, arch rib support are installed the back anchor system;
Step 2, establish one and promote the station closing on be provided with steel tube arch lateral opening, the steel tube arch rib sections is transported to promoting stands hangs the position; Lift to the bridge floor transport vehicle by promoting the station, be transported to position to be installed; Arch rib stull loose mail is transported to behind the building site and is promoted by promoting the station, and transport vehicle is transported to behind the relevant position integrally welded again, and arching gantry crane cantilever end rises and winches to the relevant position and install; By the hanging arch rib sections of slinging of moving door on the beam face, adjust angle, transfer arch rib gradually, the arch rib top is placed on the support, and bottom and arch are hinged, and adjust the arch rib absolute altitude by the jack that is arranged on the working platform, lock after reaching the working design installation accuracy, prevent to move, each point all wants pad closely knit firmly simultaneously, and each point is stressed evenly; After locating according to the method described above, the spelling that carries out arch rib and stull;
Step 3, hang the first hole steel tube arch rib button anchor cable, the tensioning equipment of turning is installed;
Step 4, the first hole steel tube arch rib are turned, closure;
Step 5, hang the second hole steel tube arch rib button anchor cable;
Step 6, the second hole steel tube arch rib are turned, and closure repeats above-mentioned operation, finishes n hole steel tube arch rib and turns, joins the two sections of a bridge, etc;
Step 7, adjustment suspension rod are removed construction equipment.
The anchor cable configuration ordinary jack of described limit tower knotted rope tower, other pylon knotted rope all disposes continuous jack.
Above-mentioned steps 4 is specially:
(A), button, the anchor cable system of limit tower knotted rope tower (1) are installed, the synchronous grading tension of button anchor cable is to 40% of builder's tonnage; The classification principle: each stretch-draw 10%, the principle that snap-fastener, anchor cable horizontal power equate is carried out;
(B), the anchor cable of limit tower knotted rope tower (1) disposes ordinary jack (5) and continuous jack (6), continuous jack I (9) in the knotted rope configuration of middle tower knotted rope tower (2) on the tower knotted rope tower (2) and the continuous jack II (10) on the middle tower knotted rope tower (2); Stretch-draw button anchor cable is partly striden arch rib (3) until the limit of limit tower knotted rope tower (1) tower knotted rope tower and is broken away from support, take off the frame height consider drag-line under temperature deformation influence day and night arch rib to breaking away from support 5cm; Through monitoring, measurement, and calculate rib structure and drag-line internal force, judge whether to be in normal condition or propose to adjust suggestion; Keep above-mentioned and took off the frame state parked 24 hours, observation group checks that to each position the vertical transfer group is observed jack and intermediate plate has or not slippage;
(C), limit tower knotted rope tower partly strides after arch rib (3) takes off frame, continues the stretch-draw knotted rope by continuous jack (6), makes limit tower knotted rope tower partly stride arch rib (3) beginning vertical transfer; After main arch takes off frame, no longer the anchor cable force is manually adjusted, allowed its Suo Li change naturally; The rational proportion relation that keeps Suo Li in the vertical transfer process by computer controlled automatic, keep simultaneously limit tower knotted rope tower partly stride arch rib (3) and the first hole arch rib on middle tower knotted rope tower 2 partly stride arch rib (4) relative relief and theoretical absolute altitude is controlled at allowed band; In whole vertical transfer process, carry out the two controls of Suo Li and absolute altitude; Assist based on elevation, Suo Liwei; Want simultaneously opposite side tower knotted rope tower (1) cat head displacement to monitor in the work progress, with the uneven horizontal force of control cat head;
(D), the first hole arch rib of middle tower knotted rope tower (2) divides and successively carries out in arch rib (4) and second hole arch rib arch rib (7) vertical transfer of partly striding on middle tower knotted rope tower 2 of partly striding on the middle tower knotted rope tower 2;
Carry out the vertical transfer first hole arch rib earlier and on middle tower knotted rope tower 2, partly stride arch rib (4), wherein tower knotted rope tower (2) pylon anchor cable is located at the first hole arch rib partly the striding on the arch rib (4) on middle tower knotted rope tower 2 for the treatment of vertical transfer, and its vertical transfer step is identical with the vertical transfer that the limit tower knotted rope tower of limit tower knotted rope tower (1) is partly striden arch rib (3);
(E), partly stride arch rib (4) vertical transfer of the first hole arch rib on middle tower knotted rope tower 2 put in place, it is linear to adjust the first hole arch rib (8) by two groups of buttons of stretch-draw, anchor cable force, the abutted flange dish is installed flower basket bolt; The fine setting flower basket bolt is eliminated slit between flange, welding flange; Rotation holds out against vault gaily decorated basket screw rod, current main arch two semiarch vault absolute altitudes and direction across bridge deviation situation according to the monitoring of monitoring group, at first adjust direction across bridge, adjust short transverse again, until the vault absolute altitude that reaches designing requirement, in constant relatively time, fixedly gaily decorated basket screw rod is finished instantaneous closure in temperature; Welding free bearing, arch axis; Welding vault closure sleeve pipe is finished the closure of the first hole arch rib (8).
Above-mentioned steps 6 is specially:
Etc. the first hole arch rib of first vertical transfer on the middle tower knotted rope tower 2 partly stride arch rib (4) and limit tower partly stride arch rib (3) closure after, carry out the vertical transfer of partly striding arch rib (7) of the second hole arch rib on middle tower knotted rope tower 2 again; At this moment, the second hole arch rib for the treatment of vertical transfer is located on the adjacent first hole arch rib (8) that has joined the two sections of a bridge, etc at the knotted rope pylon anchor cable of partly striding arch rib (7) on the middle tower knotted rope tower 2; Before the vertical transfer, need all knotted ropes of limit tower knotted rope tower (1) and middle tower knotted rope tower (2), the Suo Li of anchor cable are released into zero, when vertical transfer starts, the button anchor cable of synchronous tension limit tower knotted rope tower (1), tower knotted rope tower (2) breaks away from support until the arch rib (7) of partly striding of the second hole arch rib on middle tower knotted rope tower 2; The second hole arch rib continue the knotted rope of synchronous tension limit tower knotted rope tower (1), middle tower knotted rope tower (2), but no longer opposite side tower anchor cable force is adjusted manually, allows its Suo Li change naturally partly striding after arch rib (7) takes off frame on the middle tower knotted rope tower 2.
The present invention's method preferably is to establish the knotted rope pylon in the arch springing vicinity, and is fixed at the bottom of the tower, allows pylon to bear certain uneven horizontal force by the rope generation in the construction, and the capable horizontal force control of step-by-step shift-in.
The present invention has easy construction, safe and reliable, the advantage that construction cost is low.
Description of drawings
Fig. 1 first hole arch rib vertical transfer construction schematic diagram
Fig. 2 second hole arch rib vertical transfer construction schematic diagram
Fig. 3 a limit tower knotted rope pylon elevational cross-sectional view
Fig. 3 b limit tower knotted rope pylon side view cutaway drawing
Tower knotted rope pylon elevational cross-sectional view among Fig. 4 a
Tower knotted rope pylon side view cutaway drawing among Fig. 4 b
Elevational cross-sectional view is arranged in the column overhead stretch-draw of Fig. 5 a limit
Side view cutaway drawing is arranged in the column overhead stretch-draw of Fig. 5 b limit
Elevational cross-sectional view is arranged in column overhead stretch-draw among Fig. 6 a
Side view cutaway drawing is arranged in column overhead stretch-draw among Fig. 6 b
Fig. 7~13 steel truss girder installation block diagram
Among the figure: 1. limit tower knotted rope tower, 2. middle tower knotted rope tower, 3 limit tower knotted rope towers are partly striden arch rib, 4. the first hole arch rib is partly striden arch rib, 5. ordinary jack, the 6. continuous jack on the limit tower knotted rope tower 1 on middle tower knotted rope tower 2,7. the second hole arch rib is partly striden arch rib on middle tower knotted rope tower 2,8. the first hole arch rib, 9. in continuous jack I on the tower knotted rope tower 2,10. in continuous jack II on the tower knotted rope tower 2
The specific embodiment
Now the bridge with three pylons is the job practices of example explanation multi-arch bridge rib vertical turning.
This method key step is:
1, the knotted rope pylon just can utilize tower crane to install behind the certain sections of structure beam cantilever, changes the assembly of loosing into to certain altitude; Three pylon assembly units finish, and install and press Tasso and back guy, and stretch-draw forms stabilising system to builder's tonnage.
2, the spelling of arch rib
Establish a gantry crane and promote the station closing on be provided with steel tube arch lateral opening.The steel tube arch rib sections is transported to by water transport that promoting stands hangs the position in the back well in factory process; Lift to the bridge floor transport vehicle by promoting the station, be transported to position to be installed.Arch rib stull loose mail is transported to behind the building site and is promoted by promoting the station, and transport vehicle is transported to behind the relevant position integrally welded again, and arching gantry crane cantilever end rises and winches to the relevant position and install.By the beam face hanging arch rib sections of slinging to the doorstep, adjust angle, transfer arch rib gradually, the arch rib top is placed on the support, and bottom and arch are hinged, and adjust the arch rib absolute altitude by the jack that is arranged on the working platform, lock after reaching the working design installation accuracy, prevent to move, each point all wants pad closely knit firmly simultaneously, and each point is stressed evenly.After locating according to the method described above, the spelling that carries out arch rib and stull.
3, the limit tower is partly striden the vertical transfer of arch rib
1. the buckleing of limit tower knotted rope pylon 1, anchor cable system are installed, and the synchronous grading tension of button anchor cable is to 40% of builder's tonnage.The classification principle: each stretch-draw 10%, the principle that snap-fastener, anchor cable horizontal power equate is carried out.
2. the anchor cable of limit tower knotted rope tower 1 configuration ordinary jack 5 and jack 6 continuously, the knotted rope of middle tower knotted rope tower 2 dispose continuous jack 9 and continuous jack 10.Stretch-draw button anchor cable is partly striden arch rib 3 until the limit of limit tower knotted rope pylon 1 tower knotted rope tower and is broken away from supports, take off the frame height consider drag-line under temperature deformation influence day and night arch rib to breaking away from support 5cm.Through monitoring, measurement, and calculate rib structure and drag-line internal force, judge whether to be in normal condition or propose to adjust suggestion.Keep above-mentioned and took off the frame state parked 24 hours, observation group checks that to each position the vertical transfer group is observed jack and intermediate plate has or not slippage.
3. limit tower knotted rope tower is partly striden after arch rib 3 takes off frame, continues the stretch-draw knotted ropes by continuous jack 6, makes limit tower knotted rope tower partly stride arch rib 3 beginning vertical transfers.After main arch takes off frame, no longer the anchor cable force is manually adjusted, allowed its Suo Li change naturally.The rational proportion relation that keeps Suo Li in the vertical transfer process by computer controlled automatic, keep simultaneously limit tower knotted rope tower partly stride arch rib 3 and the first hole arch rib the first hole arch rib on the middle tower knotted rope tower 2 on middle tower knotted rope tower 2 partly stride arch rib 4 relative reliefs and theoretical absolute altitude is controlled at allowed band.In whole vertical transfer process, carry out the two controls of Suo Li and absolute altitude.Assist based on elevation, Suo Liwei.
Want simultaneously the 1 cat head displacement of opposite side tower knotted rope tower to monitor in the work progress, with the uneven horizontal force of control cat head.
4, middle tower is partly striden the vertical transfer of arch rib
In the first hole arch rib of tower knotted rope tower 2 divide and successively carry out in arch rib 4 and second hole arch rib arch rib 7 vertical transfers of partly striding on middle tower knotted rope tower 2 of partly striding on the middle tower knotted rope tower 2.
Carry out the vertical transfer first hole arch rib earlier and on middle tower knotted rope tower 2, partly stride arch rib 4, wherein tower knotted rope tower 2 pylon anchor cables are located at the first hole arch rib partly the striding on the arch rib 4 on middle tower knotted rope tower 2 for the treatment of vertical transfer, and its vertical transfer step is identical with the vertical transfer that the limit tower knotted rope tower of limit tower knotted rope tower 1 is partly striden arch rib 3.
5, the closure of the first hole arch rib
Partly stride arch rib 4 vertical transfers of the first hole arch rib on middle tower knotted rope tower 2 put in place, and by two groups of buttons of stretch-draw, that the anchor cable force is adjusted the first hole arch rib 8 is linear, the abutted flange dish is installed flower basket bolt; The fine setting flower basket bolt is eliminated slit between flange, welding flange; Rotation holds out against vault gaily decorated basket screw rod, current main arch two semiarch vault absolute altitudes and direction across bridge deviation (arch axis shape) situation according to the monitoring of monitoring group, at first adjust direction across bridge, adjust short transverse again (mainly by adjusting knotted rope and two semiarch to drawing in row adjustment, other finely tunes gaily decorated basket screw rod and cooperates), until the vault absolute altitude that reaches designing requirement, in temperature in constant relatively time, fixedly gaily decorated basket screw rod is finished instantaneous closure.Welding free bearing, arch axis; Welding vault closure sleeve pipe is finished the closure of the first hole arch rib 8.
6, the installation of the second hole arch rib
Partly striding after arch rib 4 partly strides arch rib 3 closures with limit tower knotted rope tower on the middle tower knotted rope tower 2, carry out the vertical transfer of partly striding arch rib 7 of the second hole arch rib on middle tower knotted rope tower 2 etc. the first hole arch rib of first vertical transfer again.At this moment, the second hole arch rib for the treatment of vertical transfer is located on the adjacent first hole arch rib 8 that has joined the two sections of a bridge, etc at the knotted rope pylon anchor cable of partly striding arch rib 7 on the middle tower knotted rope tower 2.Before the vertical transfer, need all knotted ropes of limit tower knotted rope tower 1 and middle tower knotted rope tower 2, the Suo Li of anchor cable are released into zero, when vertical transfer started, the button anchor cable of synchronous tension limit tower knotted rope tower 1, middle tower knotted rope tower 2 broke away from support until the arch rib 7 of partly striding of the second hole arch rib on middle tower knotted rope tower 2.The second hole arch rib continue the knotted rope of synchronous tension limit tower knotted rope tower 1, middle tower knotted rope tower 2, but no longer opposite side tower anchor cable force is adjusted manually, allows its Suo Li change naturally partly striding after arch rib 7 takes off frame on the middle tower knotted rope tower 2.
Other step is all identical with the vertical transfer of partly striding arch rib 4 of limit tower knotted rope tower 2.
Claims (5)
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CN101623820B (en) * | 2009-08-05 | 2011-08-31 | 中铁宝桥集团有限公司 | Horizontal preassembling method of large-sized bridge steel tower |
CN101864737B (en) * | 2010-06-11 | 2011-10-19 | 中铁大桥局集团有限公司 | Secondary vertical rotating construction method for arch rib of long-span steel arch bridge |
CN101864738B (en) * | 2010-06-11 | 2012-07-04 | 中铁大桥局集团有限公司 | Support system for constructing steel arch bridge by repeated vertical rotating method |
CN101864727B (en) * | 2010-06-11 | 2012-05-30 | 中铁大桥局集团有限公司 | Method for connecting upper arch rib and lower arch rib in multiple-time vertically downward rotating construction of main arch of arch bridge and central hinge |
CN101935987B (en) * | 2010-08-27 | 2012-07-25 | 中交第一公路工程局有限公司 | Construction method for integrally sliding large-span steel pipe arch of curved bridge |
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CN102433843B (en) * | 2011-09-30 | 2013-12-25 | 腾达建设集团股份有限公司 | Self-balancing arch rib vertical rotation and lift construction method |
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CN110104548B (en) * | 2018-12-18 | 2020-06-05 | 南通振华重型装备制造有限公司 | Construction method of gantry crane main beam structure |
CN110205938A (en) * | 2019-05-30 | 2019-09-06 | 中铁四局集团第二工程有限公司 | The tubular arch installation method of base-supporting beam-arch composition bridge |
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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: 20150206 |
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Effective date of registration: 20150206 Address after: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No. Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No. Patentee before: China Zhongtie Major Bridge Engineering Co., Ltd. |