CN102808382A - Method for constructing arch bridge in V-shaped valley without tower - Google Patents
Method for constructing arch bridge in V-shaped valley without tower Download PDFInfo
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- CN102808382A CN102808382A CN2012103097156A CN201210309715A CN102808382A CN 102808382 A CN102808382 A CN 102808382A CN 2012103097156 A CN2012103097156 A CN 2012103097156A CN 201210309715 A CN201210309715 A CN 201210309715A CN 102808382 A CN102808382 A CN 102808382A
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Abstract
The invention discloses a method for constructing an arch bridge in a V-shaped valley without a tower. The method comprises the following steps of: arranging an arch box prefabrication yard along one side of a river channel; arranging a main cable ground anchor on a mountain on one side of the river channel, arranging a main cable ground anchor or a tower on a mountain on the opposite bank, anchoring a main cable between the two ground anchors or between the ground anchor and the tower, and arranging a crane on the main cable; arranging approach subgrade in the river channel of the arch box prefabrication yard leading to the main cable; and using a beam transport flatcar to vertically transport an arch box to a position below the main cable, rotating the arch box for 90 degrees and then lifting the arch box in place through the crane. The method for constructing the arch bridge in the V-shaped valley without the tower has the advantages that since the construction method of arranging the main cable ground anchors on the mountains on two banks (or erecting the tower on one bank) is adopted according to the characteristics that the construction site is in the V-shaped valley and the working place is narrow and long, the short-distance turning and hoisting of the arch box are realized, a large curve is not required to be arranged for turning the arch box, the occupied area is saved, the volume of the excavated ground at the valley belt is reduced, the environmental protection is facilitated, the safety and the operability are high, the manpower and material resources are saved, the working efficiency is improved and the construction period is greatly shortened.
Description
Technical field
The present invention relates to the job practices of bridge, especially relate to the job practices that a kind of V-type valley does not have the support arch bridge.
Background technology
In the V-type valley, set up arch bridge; Traditional method is that two pylons are set on the massif of two sides, valley; Between two pylons, set up cable, the transportation loop wheel machine is set on the main rope of cable, the prefabricated place of arch case is arranged on side massif bottom; Below the main rope of arch case precasting yard and cable, track is set, it is in place that prefabricated arch case moves towards lifting along main rope.Arch case precasting yard just needs the bigger turning radius of setting like this, must cause very big excavated volume during the construction of valley, if meet stone matter massif, then excavation supporting will be difficult more, and economy and operability are all very poor.
Summary of the invention
The object of the present invention is to provide a kind of comparatively economic V-type valley not have the job practices of support arch bridge, this job practices is fit to the construction of narrow and small place very much, has reduced environment damage.
For realizing above-mentioned purpose, the present invention can take following technical proposals:
V-type of the present invention valley does not have the job practices of support arch bridge, and it comprises the steps:
The first step, road one side is provided with arch case precasting yard along the river;
Second step; On the massif of arch case precasting yard one side, the main rope earth anchor is set; On the massif on arch case precasting yard opposite bank, main rope earth anchor or pylon are set, anchoring has the cable main rope between both sides massif earth anchor or a side massif earth anchor and opposite bank massif pylon, and said main rope is provided with the transportation loop wheel machine; In the river course of main rope, the roadbed of leading the way is set at arch case precasting yard;
The 3rd step, after prefabricated arch case intensity reaches requirement, utilize flat car for transport of sills will encircle case and vertically be transported to main rope below along the roadbed of leading the way, go out flat car for transport of sills after will encircle the case half-twist then, transport loop wheel machine and lift and encircle case and make its installation in place;
The 4th step repeated for the 3rd step, until all arch case hoisted in position.
Said main rope is two ropes, but adopts two rope handling large scales, large-tonnage bridge formation member.
Flatcar and the back flatcar that has rotating disk before said flat car for transport of sills comprises, said arch case is placed between the forward and backward flatcar.
The invention has the advantages that the work-yard is long and narrow, is chosen in the job practices that main rope earth anchor (or only setting up pylon at a bank) is set on the massif of two sides because construction ground is in the V-type valley, and according to the condition in actual place; Realize that the short distance of arch case turns, lifts, need not to be provided with big curve and encircle case and turn, can practice thrift occupation of land; Minimizing is beneficial to environmental protection, safety and strong operability to the piece of smooth land excavation in area, valley; Save the man power and material again, improved work efficiency, shortened the construction period greatly.
Description of drawings
Fig. 1 is the construction sketch map of arch bridge of the present invention.
Fig. 2 encircles case hoisting process sketch map.
The specific embodiment
V-type of the present invention valley does not have the job practices of support arch bridge, and it comprises the steps:
The first step, the updrift side of road one side is provided with arch case precasting yard along the river, can reduce the massif excavation;
Second step; Anchoring cable main rope 3 between main rope earth anchor 1, two earth anchor is being set on the massif of two sides, during construction according to actual geological conditions; Also can on the massif of arch case precasting yard one side, main rope earth anchor 1 be set; A pylon 2 is set on the massif on precasting yard opposite bank, and like this, the two ends of main rope 3 just are connected between earth anchor 1 and the pylon 2 respectively; Main rope 3 can be that single rope also can be two ropes, but adopts two rope handling large scales, large-tonnage bridge formation member, and the transportation loop wheel machine is set on main rope 3; Arch case precasting yard is provided with the roadbed of leading the way in the river course of main rope;
The 3rd step; After prefabricated arch case semi-finals degree reaches requirement; Flatcar 5 will encircle case 4 vertical main rope 3 belows that are transported to the flat car for transport of sills that the back flatcar that has rotating disk 6 is formed along the roadbed of leading the way before utilizing, and go out flat car for transport of sills after will encircleing case 4 half-twists then, transport loop wheel machine and lift and encircle case 4 and make its installation in place;
The 4th step repeated for the 3rd step, until all arch case 4 hoisted in position.
Be made as example with the interim crane span structure of Yalongjiang River two river mouth power station 1# below and specify job practices of the present invention:
1, arch case design: main bridge superstructure adopts steel concrete constant section catenary box-shaped plate arch, 110 meters of main aperture clear spans, clean ratio of rise to span 1/5, clean rise 22.0m, arch axis coefficient m=1.347.The wide 10.46m of arch ring, prefabricated sagitta 2.3m, the thick integration in-situ layer of upper berth 0.1m, overall height 2.4m, raising middle flask adopts 1.32m, and the limit case adopts 1.46m.The main arch circle is made up of 7 arch casees, and every arch case is divided into 5 sections prefabrication and liftings, and limit case net weight reaches 73.1t.
2, funicular system and arch box fastener rope design (as shown in Figure 1): according to the actual landform characteristics, definite lifting rope is striden and is 217m+21.8m.Precasting yard and arch case appearance factor are considered in the left bank, do not establish pylon, adopt two group cables.At each 5m place of bridge axis upstream and downstream 2 steel bar concrete anchor holes of allowing the about 1000t of stretching resistance are set and carry out the anchoring of main rope.Left bank one button knotted rope is crossed 5# pier footstock pulley and is anchored in 6# abutment root, and two button knotted ropes directly are anchored on the anchor beam of anchor hole, left bank.The right bank pylon is located on the 0# abutment, and the bridge axis upstream and downstream 5m at 21.8m place is provided with 2 and allows that the steel bar concrete anchor hole of the about 1000t of stretching resistance carries out the anchoring of main rope, knotted rope, working cable and pylon after wind cable behind the right bank tower; Right bank backstay horizontal sextant angle is about 20 °.Right bank one button knotted rope directly is anchored on the abutment foundation, and two button knotted ropes are anchored on the anchor beam of right bank anchor hole through the pylon top.
3, conveying track and flatcar design: conveying track adopts 50 rail, gauge 1.2m.Flatcar 5 and back flatcar 6 before flat car for transport of sills is divided into.Preceding flatcar 5 need not turn to, and the joist platform only is set; Back flatcar 6 removes the joist platform steel ball and rotating shaft also is set on this, and the steel plate with 3cm is covered on the surface.During transportation, flatcar places arch case 4 suspension centres below, and the place mat lumps of wood increases contact surface.
It is as shown in Figure 2 that loop wheel machine lifts the process of encircleing case:
2a: forward and backward flatcar 5,6 will encircle case 4 through conveying track and vertically transport the main rope below to, and preceding flatcar 5 stops when walking downstream main rope 3.1 belows;
2b: utilize the preceding suspension centre 7 of downstream main rope (loop wheel machine transportation system establishes the two suspension centres in front and back) of transportation loop wheel machine to promote arch case 4 front ends, preceding flatcar 5 is not stressed, withdraw from preceding flatcar 5 then;
2c: suspension centre 7 promotes arch casees 4 front ends and slowly moves ahead before the downstream main rope of loop wheel machine transportation system, and back flatcar 6 worms along track simultaneously, and speed is consistent, make arch case 4 planar after flatcar 6 rotating disks be that center of rotation slowly rotates;
2d: flatcar 6 upper reaches main rope 3.1 belows of walking, back, the arch case is accomplished 90 ° of rotations, and then utilizes the back suspension centre 8 of main rope transportation system to promote arch casees 4 rear ends, and back flatcar 6 is not stressed, and withdraws from the back flatcar then, and like this, arch case 4 total weights are transferred on the main rope.
The transportation of turning of the prefabricated component that job practices of the present invention is little to the place, size is big, weight is big, handling dissemination and the value that has very in place.
Claims (3)
1. a V-type valley does not have the job practices of support arch bridge, and it is characterized in that: it comprises the steps:
The first step, road one side is provided with arch case precasting yard along the river;
Second step; On the massif of arch case precasting yard one side, main rope earth anchor (1) is set; On the massif on arch case precasting yard opposite bank, main rope earth anchor or pylon (2) are set; Anchoring has cable main rope (3) between both sides massif earth anchor or a side massif earth anchor and opposite bank massif pylon, and said main rope (3) is provided with the transportation loop wheel machine; In the river course of main rope, the roadbed of leading the way is set at arch case precasting yard;
The 3rd step; After prefabricated arch case (3) intensity reaches requirement; Utilize flat car for transport of sills will encircle case (4) and vertically be transported to main rope (3) below, go out flat car for transport of sills after will encircle case (4) half-twist then, transport loop wheel machine and lift and encircle case (4) and make its installation in place along the roadbed of leading the way;
The 4th step repeated for the 3rd step, until all arch case (4) hoisted in position.
2. V-type according to claim 1 valley does not have the job practices of support arch bridge, it is characterized in that: said main rope (3) is two ropes.
3. V-type according to claim 1 valley does not have the job practices of support arch bridge, it is characterized in that: said flat car for transport of sills comprises preceding flatcar (5) and has the back flatcar (6) of rotating disk that said arch case (4) is placed between the forward and backward flatcar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103097156A CN102808382A (en) | 2012-08-28 | 2012-08-28 | Method for constructing arch bridge in V-shaped valley without tower |
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| CN2012103097156A CN102808382A (en) | 2012-08-28 | 2012-08-28 | Method for constructing arch bridge in V-shaped valley without tower |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019356A (en) * | 2015-04-28 | 2015-11-04 | 中国电建集团贵阳勘测设计研究院有限公司 | Suspending and pulling combined erection construction method and device |
| CN105565176A (en) * | 2016-02-03 | 2016-05-11 | 中铁港航局集团有限公司 | Single-tower asymmetric cable crane |
| CN105821766A (en) * | 2015-01-09 | 2016-08-03 | 任丘市永基建筑安装工程有限公司 | Steel arch bridge river crossing installation technology |
| CN106120533A (en) * | 2016-08-25 | 2016-11-16 | 中铁五局集团路桥工程有限责任公司 | A kind of catenary suspension type continuous vulcanization arch template system structure |
| CN106284083A (en) * | 2016-08-15 | 2017-01-04 | 云南云岭桥隧科技有限公司 | Pushing tow climbs shifting formula cable crane arch bridge hanging method |
| CN107881916A (en) * | 2017-10-17 | 2018-04-06 | 中国水利水电第九工程局有限公司 | Couloirs arched aqueduct arch ring lifts single base rib closure construction method |
| CN108755383A (en) * | 2018-05-09 | 2018-11-06 | 中国葛洲坝集团第五工程有限公司 | Steel construction arch bridge is using short button tower or the segmentation integral hoisting method without button tower |
| CN109487704A (en) * | 2018-10-29 | 2019-03-19 | 中国建筑第六工程局有限公司 | A kind of secondary rotation swivel construction method of horizontal swing bridge |
| CN110924309A (en) * | 2019-12-11 | 2020-03-27 | 广西路桥工程集团有限公司 | Arch rib segment overturning method |
| CN111535160A (en) * | 2020-05-20 | 2020-08-14 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel inverted arch combined type cableway bridge abutment |
| CN111622121A (en) * | 2020-06-03 | 2020-09-04 | 中铁一局集团厦门建设工程有限公司 | Reeving method for hoisting single-tower cable |
| CN111732001A (en) * | 2020-06-10 | 2020-10-02 | 中铁五局集团第四工程有限责任公司 | Suspension cable hoisting structure and method for prefabricated part in steep valley terrain |
| CN113356036A (en) * | 2021-04-23 | 2021-09-07 | 中铁大桥局集团第五工程有限公司 | Cable tower foundation structure combined with bridge abutment and construction method thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105821766A (en) * | 2015-01-09 | 2016-08-03 | 任丘市永基建筑安装工程有限公司 | Steel arch bridge river crossing installation technology |
| CN105019356A (en) * | 2015-04-28 | 2015-11-04 | 中国电建集团贵阳勘测设计研究院有限公司 | Suspending and pulling combined erection construction method and device |
| CN105565176A (en) * | 2016-02-03 | 2016-05-11 | 中铁港航局集团有限公司 | Single-tower asymmetric cable crane |
| CN105565176B (en) * | 2016-02-03 | 2017-06-13 | 中铁港航局集团有限公司 | A kind of asymmetric cable crane of single column |
| CN106284083A (en) * | 2016-08-15 | 2017-01-04 | 云南云岭桥隧科技有限公司 | Pushing tow climbs shifting formula cable crane arch bridge hanging method |
| CN106120533A (en) * | 2016-08-25 | 2016-11-16 | 中铁五局集团路桥工程有限责任公司 | A kind of catenary suspension type continuous vulcanization arch template system structure |
| CN107881916A (en) * | 2017-10-17 | 2018-04-06 | 中国水利水电第九工程局有限公司 | Couloirs arched aqueduct arch ring lifts single base rib closure construction method |
| CN108755383A (en) * | 2018-05-09 | 2018-11-06 | 中国葛洲坝集团第五工程有限公司 | Steel construction arch bridge is using short button tower or the segmentation integral hoisting method without button tower |
| CN108755383B (en) * | 2018-05-09 | 2020-06-02 | 中国葛洲坝集团路桥工程有限公司 | Segmented integral hoisting method for steel structure arch bridge by adopting short buckling tower or buckling-free tower |
| CN109487704A (en) * | 2018-10-29 | 2019-03-19 | 中国建筑第六工程局有限公司 | A kind of secondary rotation swivel construction method of horizontal swing bridge |
| CN110924309A (en) * | 2019-12-11 | 2020-03-27 | 广西路桥工程集团有限公司 | Arch rib segment overturning method |
| CN111535160A (en) * | 2020-05-20 | 2020-08-14 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel inverted arch combined type cableway bridge abutment |
| CN111622121A (en) * | 2020-06-03 | 2020-09-04 | 中铁一局集团厦门建设工程有限公司 | Reeving method for hoisting single-tower cable |
| CN111732001A (en) * | 2020-06-10 | 2020-10-02 | 中铁五局集团第四工程有限责任公司 | Suspension cable hoisting structure and method for prefabricated part in steep valley terrain |
| CN113356036A (en) * | 2021-04-23 | 2021-09-07 | 中铁大桥局集团第五工程有限公司 | Cable tower foundation structure combined with bridge abutment and construction method thereof |
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Application publication date: 20121205 |