CN105603879A - Construction technology for large-diameter pipeline crossing construction catwalk - Google Patents
Construction technology for large-diameter pipeline crossing construction catwalk Download PDFInfo
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- CN105603879A CN105603879A CN201511001759.2A CN201511001759A CN105603879A CN 105603879 A CN105603879 A CN 105603879A CN 201511001759 A CN201511001759 A CN 201511001759A CN 105603879 A CN105603879 A CN 105603879A
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- cat road
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses a construction technology for a large-diameter pipeline crossing construction catwalk, and relates to the technical field of construction of suspension cable type crossing bridges of pipelines. The construction technology for the large-diameter pipeline crossing construction catwalk comprises the steps of pre-making a scheme, prefabricating catwalks, adjusting the catwalk line shape and the tower perpendicularity and lifting the overall catwalks, provides an installation method for a construction passageway (catwalk) for a main cable by adopting aerial prefabricating methods like long-span crossing PPWS, and effectively reduces the overhead installation and overall construction period of catwalks.
Description
Technical field
The present invention relates to the technical field of construction of pipeline suspension crossing bridge, particularly, is the construction technology in a kind of large-scale pipeline crossing construction cat road.
Background technology
Cable-stayed, due to its lower investment and ripe construction technology, is applied more in Oil pipeline. Cable-stayed is made up of substructure and superstructure, and substructure is mainly made up of pile foundation, anchorage, cushion cap etc., and superstructure is mainly made up of hinged steel tower, main rope system, the truss body of a bridge, wind rope system, pipeline etc.
Along with pipeline is installed the trend maximizing, the stronger pylon structure of armored concrete equivalent-load ability also more application in aerial crossing pipeline structure. Simultaneously, along with the trend of pipeline aerial crossing maximization, pipeline body of a bridge load also increases gradually, traditional full factory prefabricating cable is due to the reason of diameter and length increase, the transportation clearance of single main push-towing rope and weight have been not suitable for long-distance whole Transporting, and therefore the bridge main rope erection method such as PPWS (Prefabricated parallel hawser) method is also applied in Oil pipeline gradually in recent years. The construction of PPWS method main rope is because aerial operation is many, and long construction period, need to set up aerial work passage, Ji Mao road. Traditional erection method in cat road conventionally need to wait for after bridge tower has been constructed and making in the air, and overall construction period is longer, and the cat road work high above the ground time is long, material and also inconvenience of personnel's transport. Because the construction period of Oil pipeline is short compared with highway bridge, therefore seek more convenient, cat road mounting process efficiently, be conducive to Optimizing construction cycle and safety management, be also the approach that improves this crucial construction node efficiency of cable erection.
Summary of the invention
Aerial crossing pipeline structure maximizes, cable bridge is main development trend, and therefore main push-towing rope need to carry out aerial prefabricated installation, construction catwalk set up the problem that large-scale pipeline Oil pipeline need to be paid close attention to that also becomes. In order to overcome above-mentioned the deficiencies in the prior art, patent of the present invention provides the construction technology in a kind of large-scale pipeline crossing construction cat road, object is the installation method of a kind of construction passage (Ji Mao road) that is applicable to the aerial method for prefabricating installation main push-towing ropes such as large-scale leap PPWS of design, effectively reduces the high-altitude in cat road and installs and overall construction period.
For achieving the above object, technical scheme of the present invention is as follows:
The construction technology in large-scale pipeline crossing construction cat road, is characterized in that, further comprising the steps of:
A, scheme are prefabricated: for the geomorphic feature that needs pipeline aerial crossing to build, carry out pylon He Mao road force analysis, show that pylon deviant He Mao road is subject to force parameter, determines processing step;
A1, cat road prefabricated: cat road comprises separate Zhong Kuamao road and end bay cat road, and prefabricated Zhong Kuamao road and end bay cat road, be fixed on formulation Zhong Kuamao road between two pylons in the pylon pouring construction stage;
Linear and the pylon perpendicularity of A2, cat road is adjusted: end bay cat road is arranged on pylon, and end bay cat road is carried out to linear adjustment, make it meet force analysis and obtain cat road and be subject to force parameter, and pylon skew arranges, make it meet the pylon deviant that force analysis obtains;
A3, cat road Integral lifting: Ba Zhongkuamao road is promoted to tower top position.
Further, in content A1, the installation in Zhong Kuamao road first by bearing steel wire rope dish, put rope frame and winch to first tower tower at the bottom of, utilizing tower crane to coordinate is connected track cable front end with pull rope, by hoist engine trailer system, track cable is reached to tailing column sill, by rope head be connected to tailing column, then rear end is connected to first tower.
Further, described track cable is after installation, connected with each other by crossbeam, and by bolt, crossbeam and track cable is fixed, and lays cat road surface layer on crossbeam upper strata.
Further, the installation of described cat road surface layer adopts prefabricated traction method to carry out, i.e. one section of prefabricated one section of traction, is fixed on track cable until whole cat road is paved with rear employing U bolt, Zhong Kuamao road is laid from tower top toward span centre direction, and end bay cat road is laid from anchorage toward tower top direction.
Further, after described cat road topping laying completes, carry out the installation in handrail net, walking road, after installing, and regulate by the connected system of tower top, until view picture cat diatom shape meets the requirements.
Further, in described A3 content, promote Zhong Kuamao road and connect fast by anchor, anchor adopts anchor bar and pre-embedded steel slab welding production to form, and anchor bar and entablature main reinforcement are weldingly connected.
Further, described pre-embedded steel slab is in concreting process, and surface is placed in outside concrete, adopts mode and the anchor bar welding of welding after pylon has been constructed.
Further, in described A2 content, the pylon deviant drawing according to force analysis, pylon is carried out partially pre-by balance tensioning equipment, the uneven cross force in the skew balance Liao Mao road Integral lifting process of pylon, pylon being produced, and eliminate the extra-stress while lifting, pylon being produced, guarantee pylon structure safety.
Further, in described A3 content, need to sill is prefabricated complete after, promote again Zhong Kuamao road entirety to tower top, in process, constantly adjust balance tensioning equipment, put in place and anchoring until cat road promotes, and Hou Mao in place road is carried out to integral linear adjustment again, straight each structure stress and position meet design requirement, thereby complete whole technique.
Further, in A1 content, according to mechanics feature, set up cat road Integral lifting analytical model, adopt nonlinear analysis software to carry out simulation analysis, according to the mechanics situation of each key structure in whole process simulation process implementing process, adjust and determine tower top lifting device parameter, the pre-value partially of pylon.
Beneficial effect of the present invention is: compare with traditional suspension bridge Mao road integral installation technique, the most obvious advantage of the present invention is, overcome the difficult problem that traditional suspension bridge construction cat road must could carry out at bridge tower top construction and installation after bridge tower completion, improve Liao Mao road prefabricated and installation level and efficiency, reduce work high above the ground risk. No matter be all better than traditional Mao road mounting process from engineering time, efficiency of construction, construction economy aspect.
By facts have proved of engineering, because prefabricated work instead of the traditional handicraft that can start cat road in the pylon construction stage need could start after pylon completion, the overall duration therefore crossing over can reduce more than 20 days; Because a large amount of prefabricated work in Mao road all starts at tower cross member position, cat road construction material requested is in place and installation is all more convenient, therefore can effectively reduce the work high above the ground time.
Comprehensive above factor, employing large-scale pipeline crossing construction cat road is integral prefabricated has significant economic benefit and social benefit with lifting construction technique.
Brief description of the drawings
Fig. 1 is the construction flow chart in large-scale pipeline crossing construction cat provided by the invention road.
Fig. 2 is A1 step Zhong Mao provided by the invention road Construction State schematic diagram.
Fig. 3 is A2 step Zhong Mao provided by the invention road Construction State schematic diagram.
Fig. 4 is A3 step Zhong Mao provided by the invention road Construction State schematic diagram.
Mark in figure: 1 is that pylon, 2 is that end bay cat road, 3 Wei Zhongkuamao roads, 4 are that balance tensioning equipment, 5 is that hoist engine, 6 is that sill, 7 is that track cable, 8 Wei Mao road faces, 9 are tower crane.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described.
As shown in Figure 1, the construction technology in large-scale pipeline crossing construction cat road, comprises the following steps: A, scheme are prefabricated: for the geomorphic feature that needs pipeline aerial crossing to build, carry out pylon 1 He Mao road force analysis, show that pylon 1 deviant He Mao road is subject to force parameter, determines processing step; A1, cat road prefabricated: cat road comprises separate Zhong Kuamao road 3 and end bay cat road 2, and prefabricated Zhong Kuamao road 3 and end bay cat road 2 were fixed on formulation Zhong Kuamao road 3 between two pylons 1 in the 1 pouring construction stage of pylon; Linear and the pylon 1 perpendicularity adjustment of A2, cat road: end bay cat road 2 is arranged on pylon 1, and end bay cat road 2 is carried out to linear adjustment, make it meet force analysis and obtain cat road and be subject to force parameter, and pylon 1 skew arranges, make it meet pylon 1 deviant that force analysis obtains; A3, cat road Integral lifting: Ba Zhongkuamao road 3 is promoted to tower top position.
According to version and the loading characteristic crossed over, cat road forms by 3 sections, i.e. main span cat road, end bay cat road 2. Zhong Kuamao road 3 is because conventional mounting need to just can be carried out after pylon 1 completion, therefore adopt cat road integral prefabricated with lifting construction technique. Cat road is mainly made up of track cable 7, cat road face 8, railing, handrail, cylinder etc. Cat road face 8, lower than the about 1.2m in main push-towing rope center, is considering main push-towing rope diameter, main push-towing rope spacing, tight cable machine and is twining on the basis of the minimum working space of a machine, and the width of end bay cat road 2 surface layers is about 4.4m, and upstream and downstream main push-towing rope shares Yi Fumao road; Zhong Kuamao road 3 is divided into each two width in upstream and downstream, and the width that Mei Fumao road face is 8 layers is about 2.0m, two width cat track pitch 0.6m.
The installation of cat road track cable 7, in cat road, Kua Meifumao selects in road 4 Ф 32mm steel wire ropes to make track cable 7, track cable 7 use retainer clips are anchored in respectively on the connector on tower end, anchorage surface, in 7 points of track cables across arranging across disconnecting with end bay two.
When Zhong Kuamao road 3 track cables 7 are installed, by bearing steel wire rope dish, put rope frame and winch to first tower tower at the bottom of, utilizing tower crane 9 to coordinate is connected its front end with φ 22 pull ropes, start 10t hoist engine 5 trailer systems, Shi Mao road track cable 7 advances to tailing column sill 6 tops, and utilization is simultaneously put the adjusting of rope frame brake gear and put Suo Sudu; When track cable 7 front ends arrive after tailing column sill 6, rope head is connected with sill 6 jockeys of interim setting, then rear end and first tower sill 6 cat road, top anchor beams are fixed. After whole cats road track cable 7 has set up, measure each Suo Zhongdian absolute altitude, adjust its absolute altitude by hydraulic jack by root, require the span centre absolute altitude deviation between the each track cable 7 in same Fu Mao road to be not more than 30mm.
The installation of crossbeam, track cable 7 is connected by crossbeam each other, and crossbeam adopts 8# channel-section steel to be made, and by 3m pitch arrangement, and crossbeam and track cable 7 is fixed with U bolt.
Crossbeam upper strata adopts two-layer steel wire as 8 layers, cat road face, steel wire is respectively by generous eye welded wire fabric and the Ф 1.0(16mm × 16mm of Ф 3.0 (hole 40mm × 40mm)) little side's eye steel wire, meet respectively the protection of falling of cat road rigidity needs and smallclothes. For safety and the comfortableness of air walk, the non-slip wood that specification is 80 × 4 × 70cm is fixed every 0.5m colligation in this leap cat road on surface layer steel wire simultaneously.
The installation that cat road face is 8 layers, the installation that cat road face is 8 layers adopts prefabricated traction method to carry out, i.e. and one section of prefabricated one section (3m) traction, is fixed on track cable 7 until whole cat road is paved with rear employing U bolt. When prefabricated, cat road crossbeam, steel wire draw installation after all installing. In across from tower top toward span centre direction lay, end bay is laid from anchorage toward tower top direction. After 2 tractions of end bay cat road put in place, carry out immediately the installation of handrail net. After installing, regulate by tower top connected system, until view picture cat road line style meets the requirements. Cat road is anchored in down about 0.8m position of tower top, in the time of Sarasota concrete construction, in advance at this location arrangements built-in fitting.
Promote the installation of adjusting and stabilising arrangement, adjusting device is used for installing cat road stretch-draw adjusting device, meets the positioning and anchoring of cat road installation in position, meets in work progress by regulating linear adjustment the in reinforcing bar Dui Mao road simultaneously.
Anchor adopts anchor bar and pre-embedded steel slab welding production to form, and in pylon 1 entablature reinforcing bar compilation process, dowel and entablature main reinforcement are weldingly connected, and in concreting process, pre-embedded steel slab surface is placed in outside concrete. After having constructed, pylon 1 adopt the mode of welding anchoring adjusting device and pre-embedded steel slab welding.
Pylon 1 construct complete after, check build record, calculating strength cycle, to determine whether pylon 1 possesses next step lifting and stabilising arrangement installation requirements. Meanwhile, after pylon 1 form removable, check that the quantity of built-in fitting and position meet the lower operation requirement walking.
After pylon 1 acceptance(check), at tower top, lifting device is installed, is installed as shaped steel welding frame structure, formed by 6 HW300 shaped steel and 3 HW250 assembly weldings. The high 3m of physical dimension, wide 4m. Structure is to the span centre direction 1m that encorbelments. 20 tons of lifting pulley are installed in structure, and are connected with 5 groups, hoist engine under bridge tower. Meet cat road Integral lifting function.
For the uneven cross force in balance cat road Integral lifting process, pylon 1 being produced, in pylon 1 dorsal funciculus direction, balance tensioning equipment 4 is installed, the pre-value partially of pylon 1 of analyzing according to Founder, pylon 1 is carried out partially pre-, the extra-stress that balance this patent produces pylon 1 while implementing lifting process, guarantees pylon 1 structural safety.
The lifting in Zhong Kuamao road 3 is in place, Zhong Kuamao road 3 sill 6 is prefabricated complete after, adopt lift method Integral lifting to carry out anchoring to tower top connected system. In Zhong Kuamao road 3 lifting process, due to large (approximately 19 tons) of single span cat road overall weight, work progress is larger to the mechanics influence of tower body, therefore needs to carry out force analysis simulation and the field conduct monitoring of overall process.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the construction technology in large-scale pipeline crossing construction cat road, is characterized in that, further comprising the steps of:
A, scheme are prefabricated: for the geomorphic feature that needs pipeline aerial crossing to build, carry out pylon He Mao road force analysis, show that pylon deviant He Mao road is subject to force parameter, determines processing step;
A1, cat road prefabricated: cat road comprises separate Zhong Kuamao road and end bay cat road, and prefabricated Zhong Kuamao road and end bay cat road, be fixed on formulation Zhong Kuamao road between two pylons in the pylon pouring construction stage;
Linear and the pylon perpendicularity of A2, cat road is adjusted: end bay cat road is arranged on pylon, and end bay cat road is carried out to linear adjustment, make it meet force analysis and obtain cat road and be subject to force parameter, and pylon skew arranges, make it meet the pylon deviant that force analysis obtains;
A3, cat road Integral lifting: Ba Zhongkuamao road is promoted to tower top position.
2. the construction technology in large-scale pipeline crossing construction cat according to claim 1 road, it is characterized in that: in content A1, the installation in Zhong Kuamao road first by bearing steel wire rope dish, put rope frame and winch to first tower tower at the bottom of, utilizing tower crane to coordinate is connected track cable front end with pull rope, by hoist engine trailer system, track cable is reached to tailing column sill, by rope head be connected to tailing column, then rear end is connected to first tower.
3. the construction technology in large-scale pipeline crossing construction cat according to claim 2 road, it is characterized in that: described track cable is after installation, connected with each other by crossbeam, and by bolt, crossbeam and track cable are fixed, and lay cat road surface layer on crossbeam upper strata.
4. the construction technology in large-scale pipeline crossing construction cat according to claim 3 road, it is characterized in that: the installation of described cat road surface layer adopts prefabricated traction method to carry out, it is one section of prefabricated one section of traction, until being paved with rear employing U bolt, whole cat road is fixed on track cable, Zhong Kuamao road is laid from tower top toward span centre direction, and end bay cat road is laid from anchorage toward tower top direction.
5. according to claim 3 or 4 construction technology in described large-scale pipeline crossing construction cat road arbitrarily, it is characterized in that: after described cat road topping laying completes, carry out the installation in handrail net, walking road, after installing, and regulate by the connected system of tower top, until view picture cat diatom shape meets the requirements.
6. the construction technology in large-scale pipeline crossing construction cat according to claim 1 road, it is characterized in that: in described A3 content, promoting Zhong Kuamao road connects fast by anchor, anchor adopts anchor bar and pre-embedded steel slab welding production to form, and anchor bar and entablature main reinforcement are weldingly connected.
7. the construction technology in large-scale pipeline crossing construction cat according to claim 6 road, it is characterized in that: described pre-embedded steel slab is in concreting process, surface is placed in outside concrete, adopts mode and the anchor bar welding of welding after pylon has been constructed.
8. the construction technology in large-scale pipeline crossing construction cat according to claim 1 road, it is characterized in that: in described A2 content, the pylon deviant drawing according to force analysis, pylon is carried out partially pre-by balance tensioning equipment, the uneven cross force in the skew balance Liao Mao road Integral lifting process of pylon, pylon being produced, and eliminate the extra-stress while lifting, pylon being produced, guarantee pylon structure safety.
9. the construction technology in large-scale pipeline crossing construction cat according to claim 1 road, it is characterized in that: in described A3 content, need to sill is prefabricated complete after, promote again Zhong Kuamao road entirety to tower top, in process, constantly adjust balance tensioning equipment, put in place and anchoring until cat road promotes, and Hou Mao in place road is carried out to integral linear adjustment again, straight each structure stress and position meet design requirement, thereby complete whole technique.
10. the construction technology in large-scale pipeline crossing construction cat according to claim 1 road, it is characterized in that: in A1 content, according to mechanics feature, set up cat road Integral lifting analytical model, adopt nonlinear analysis software to carry out simulation analysis, according to the mechanics situation of each key structure in whole process simulation process implementing process, adjust and determine tower top lifting device parameter, the pre-value partially of pylon.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110438880A (en) * | 2019-08-21 | 2019-11-12 | 中国水利水电第八工程局有限公司 | The construction method and construction system that large-span suspension bridge cat road rope is set up |
| CN112195784A (en) * | 2020-09-15 | 2021-01-08 | 中交第二公路工程局有限公司 | Catwalk sag adjustment system and adjustment method for erecting main cable by adopting air spinning method |
| CN112464534A (en) * | 2020-11-27 | 2021-03-09 | 四川石油天然气建设工程有限责任公司 | Oil-gas pipe suspension cable crossing simulation analysis model and construction method thereof |
| CN113512946A (en) * | 2021-04-21 | 2021-10-19 | 招商局重庆交通科研设计院有限公司 | Deviation error control method for main tower of suspension bridge |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002038421A (en) * | 2000-07-27 | 2002-02-06 | Shinko Wire Co Ltd | Erection method of structure |
| CN101177931A (en) * | 2007-12-05 | 2008-05-14 | 中铁大桥局股份有限公司 | Erection of gantry type small-cycle traction system on large-span suspension bridge main cable |
| CN101418542A (en) * | 2008-11-21 | 2009-04-29 | 上海市政工程设计研究总院 | Cable system construction method of spatial self-anchored rope-suspension bridge |
| CN201952738U (en) * | 2011-01-30 | 2011-08-31 | 中交三航局第三工程有限公司 | Catwalk suitable for self-anchored double-cable-plane suspension bridge |
| CN104652276A (en) * | 2015-01-12 | 2015-05-27 | 中交第二公路工程局有限公司 | Suspension bridge main cable PPWS construction cable strand in-situ erecting method |
-
2015
- 2015-12-29 CN CN201511001759.2A patent/CN105603879B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002038421A (en) * | 2000-07-27 | 2002-02-06 | Shinko Wire Co Ltd | Erection method of structure |
| CN101177931A (en) * | 2007-12-05 | 2008-05-14 | 中铁大桥局股份有限公司 | Erection of gantry type small-cycle traction system on large-span suspension bridge main cable |
| CN101418542A (en) * | 2008-11-21 | 2009-04-29 | 上海市政工程设计研究总院 | Cable system construction method of spatial self-anchored rope-suspension bridge |
| CN201952738U (en) * | 2011-01-30 | 2011-08-31 | 中交三航局第三工程有限公司 | Catwalk suitable for self-anchored double-cable-plane suspension bridge |
| CN104652276A (en) * | 2015-01-12 | 2015-05-27 | 中交第二公路工程局有限公司 | Suspension bridge main cable PPWS construction cable strand in-situ erecting method |
Non-Patent Citations (1)
| Title |
|---|
| 张其玉等: ""自锚式悬索桥三跨分离式猫道设计与施工"", 《黑龙江交通科技》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110438880A (en) * | 2019-08-21 | 2019-11-12 | 中国水利水电第八工程局有限公司 | The construction method and construction system that large-span suspension bridge cat road rope is set up |
| CN112195784A (en) * | 2020-09-15 | 2021-01-08 | 中交第二公路工程局有限公司 | Catwalk sag adjustment system and adjustment method for erecting main cable by adopting air spinning method |
| CN112195784B (en) * | 2020-09-15 | 2022-06-17 | 中交第二公路工程局有限公司 | Catwalk sag adjustment system and adjustment method for erecting main cable by adopting air spinning method |
| CN112464534A (en) * | 2020-11-27 | 2021-03-09 | 四川石油天然气建设工程有限责任公司 | Oil-gas pipe suspension cable crossing simulation analysis model and construction method thereof |
| CN113512946A (en) * | 2021-04-21 | 2021-10-19 | 招商局重庆交通科研设计院有限公司 | Deviation error control method for main tower of suspension bridge |
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| CN105603879B (en) | 2017-06-23 |
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