CN102828470B - Method for locating main girder cable sleeve of cable-stayed bridge - Google Patents
Method for locating main girder cable sleeve of cable-stayed bridge Download PDFInfo
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- CN102828470B CN102828470B CN201210325397.2A CN201210325397A CN102828470B CN 102828470 B CN102828470 B CN 102828470B CN 201210325397 A CN201210325397 A CN 201210325397A CN 102828470 B CN102828470 B CN 102828470B
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- tooth block
- noose
- cable
- cable sleeve
- line
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004873 anchoring Methods 0.000 claims abstract description 28
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims abstract description 5
- 230000004807 localization Effects 0.000 claims description 10
- 238000009415 formwork Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The invention discloses a method for locating a main girder cable sleeve of a cable-stayed bridge. The method comprises the steps of: (1) manufacturing a tooth block model for anchoring according to the physical dimension of a tooth block anchoring model; (2) fixing the tooth block anchoring model on the surface of a main girder bottom template according to the locating coordinate of a cable anchor point; (3) welding the lower end of the cable sleeve on an anchor plate, and fixing the anchor plate on the inclined plane of the tooth block anchoring model; and (4) manufacturing a cable sleeve embedded bracket to support the cable sleeve below the cable sleeve, thus enabling the angle and direction of the cable sleeve and the deviation of the cable sleeve along the bridge direction completely to accord with the design and specification requirement. The angle of the cable sleeve is ensured by adopting the cable sleeve embedded bracket; the construction method is simple; the calculation and the welding do not occupy the time limit for the project; and the installation is simple; time and effort are saved, and a lot of technicists and devices are saved.
Description
Technical field
The present invention relates to CONSTRUCTION OF CABLE-STAYED BRIDGE technical field, relate in particular to a kind of localization method of cable-stayed bridge main-beam cable sleeve.
Background technology
In prior art, in the time building cable stayed bridge, the location, angle of inclination of the noose pipe of girder drag-line is very important construction link.Slightly deviation, can cause drag-line and the friction of noose tube edges, is easy to damage drag-line and forms the hidden danger into major accident.
Traditional method carries out measurement and positioning with string of a musical instrument method to sleeve pipe, and its way is:
First work out corresponding positioning relation tables of data according to design drawing and position control method, these data mainly contain pipe range, noose tube hub line horizontal projection and X, Y-axis angle and noose tube hub line and Z axis angle, push up the three-dimensional coordinate of end mouth, calculate the distance of Ding Dikou center to vertical reference face and the string of a musical instrument according to these data.
The location of noose pipe is first to carry out Primary Location on ground, then accurately locate at the scene, on-the-spot location is mainly to put in the top of center line stiff skeleton, the position of bottom surface corresponding height the mark of measuring axis, then on mark, strain the string of a musical instrument, take the string of a musical instrument as benchmark, carry out the plane positioning of noose pipe with invar tape span; Elevation location directly causes bench level on top rail on certain datum by level method, then measures noose Guan Dingkou He Dikou center elevation by vertical span method.Through repeatedly adjusting, until X, Y, Z all qualified after, just finish this cableway location.But in order to ensure workmanship, after noose pipe is welded and fixed, also should checks and check position dimension accurately.The method need to all want survey crew to coordinate in the X, Y, Z axis direction of bridge, and to repeatedly adjust compound, and be easily subject to high temperature, strong wind, the weather effect such as rain.
Though more accurate in the precision of string of a musical instrument method location, poor reliability, efficiency are low, need to repeatedly repeat to set up instrument, and account for and need a large amount of time and personnel to coordinate, install complicated, and in the impact that is easily subject to weather.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of localization method of cable-stayed bridge main-beam cable sleeve.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of localization method of cable-stayed bridge main-beam cable sleeve, comprises the following steps:
(1) according to given drag-line location coordinate and the positional parameter table of drag-line, calculate the physical dimension of anchoring tooth block models, field lofting, is then assembled into anchoring tooth block models with plank;
(2) complete girder bed die and reinforce, emitting center line and the side form line of girder, according to the elements of a fix of anchor-hold point, the physical location of the anchoring tooth block models marking on girder soffit formwork face, then anchoring tooth block models is fixed in this physical location;
(3) the pre-buried location of form anchor and noose pipe: the lower end welding of form anchor and noose pipe, on anchoring tooth block models, unwrapping wire goes out drag-line fixed end form anchor and the physical location line for the locating hole of fixing form anchor; In order to prevent form anchor downslide displacement, be provided with the through hole for locating in the bottom of form anchor, and form anchor be fixed on anchoring tooth block models with bolt;
(4) calculate according to the angle of inclination of noose pipe the noose pipe embedded bracket of making for controlling pre-buried noose tube angulation, noose pipe embedded bracket is arranged on the below of noose pipe and holds noose pipe, makes noose tube angulation, direction and noose pipe meet design and code requirement completely in deviation along the bridge.
As preferably, noose pipe embedded bracket is made with reinforcing bar welding.
The invention has the beneficial effects as follows:
Adopt noose pipe embedded bracket to guarantee the angle of noose pipe, construction method is simple, calculates and weld not take the duration, installs simply, time saving and energy saving, saves a large amount of technician and equipment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the structural representation of girder after the pre-buried noose pipe of the localization method embodiment of cable-stayed bridge main-beam cable sleeve of the present invention.
Fig. 2 is the template mounting structure schematic diagram of the localization method embodiment of cable-stayed bridge main-beam cable sleeve of the present invention.
Fig. 3 is the structural representation of the localization method embodiment cable sleeve support of cable-stayed bridge main-beam cable sleeve of the present invention.
In figure, 1-girder drag-line, 2-noose pipe, 3-anchored end, 4-profile of tooth space, 5-girder, 6-soffit formwork, 7-anchoring tooth block models, 8-form anchor, 9-bolt, 10-noose pipe holder, S1, S2 ..., S12-girder drag-line numbering.
The specific embodiment
Below, for building the embodiment of certain Safari Park sightseeing bridge, this bridge is cable stayed bridge, king-tower by 12 steel girder drag-line S1, S2 ..., S12 is connected with girder.As shown in Figure 1, the anchored end 3 of every girder drag-line 1 is all through the interior pre-buried noose pipe 2 of girder 5 and is anchored at girder bottom surface in the profile of tooth space 4 of girder indent.The angle of inclination that every girder guy anchor fixed end and girder bottom surface form is different, and it is consistent with the angle of inclination of drag-line 1 to require to be embedded in the noose pipe 2 at 4 edges, profile of tooth space.
Below the localization method of noose pipe:
1,, according to the positional parameter table of the drag-line location coordinate providing on drawing and drag-line, can calculate the physical dimension (table 1) of anchoring tooth block models.When processing and fabricating, carry out scene in strict accordance with the dimension of picture of table 1 and amplify sample, then manufacture anchoring tooth block models with wooden form.
2, complete after girder soffit formwork reinforcing, emit center line and the side form line of beam, according to the elements of a fix of the anchor-hold point on anchoring tooth block models, the physical location of the anchoring tooth block models that unwrapping wire goes out on girder soffit formwork 6 plate faces, according to marked size positions, anchoring tooth block models is fixed on girder soffit formwork again, is so provided with in girder bottom the profile of tooth space that guy anchor fixed end is installed with anchoring tooth block models.
3, the pre-buried location of form anchor and noose pipe
In Fig. 2, form anchor 8 welds with the lower end of noose pipe 2, becomes a single piece.On anchoring tooth block models 7, mark form anchor 8 and the physical location line for the locating hole of fixing form anchor.In order to prevent form anchor 8 and pre-buried noose pipe 2 downslide displacements, be provided with two through holes corresponding with locating hole in the bottom of form anchor 8, then through locating hole and through hole, form anchor 8 be fixed on the inclined-plane of anchoring tooth block models 7 with bolt 9.For the angle of inclination of control cord sleeve pipe better, noose pipe holder 10 is arranged on the soffit formwork 6 of girder, and below noose pipe 2, hold noose pipe 2, make angle of inclination, direction and the noose pipe of noose pipe meet design and code requirement completely in deviation along the bridge.
Table 1 girder anchoring tooth piece setting-out size
As shown in Figure 2, the concrete size of noose pipe holder is in table 2 for the structure of noose pipe holder 10.Wherein a, b determine angle of inclination and the bracket height of bracket oblique support, h be noose pipe go out rope open height.Noose pipe holder adopts Φ 20 reinforcing bar welding to make.
4, prop up after the template (being anchoring tooth block models) in good above-mentioned girder template and profile of tooth space, at girder template laid inside reinforcing bar, last fluid concrete, Deng dismounting girder template and anchoring tooth block models, the profile of tooth space structures that is embedded with noose pipe presenting in girder bottom, for installing the anchored end of girder drag-line.
The blank size of table 2 Steel bar rack
The present embodiment adopts noose pipe holder to guarantee the angle of inclination of noose pipe, compared with the control of traditional strings collimation method, advantage is quick construction, install simple, time saving and energy saving, the calculating of technician that need not be a large amount of and equipment, particularly stent size and welding production can carry out in advance, do not take the duration, for project duration has been saved the time.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (2)
1. a localization method for cable-stayed bridge main-beam cable sleeve, comprises the following steps:
(1) according to given drag-line location coordinate and the positional parameter table of drag-line, calculate the physical dimension of anchoring tooth block models, field lofting, is then assembled into anchoring tooth block models with plank;
(2) complete girder bed die and reinforce, emitting center line and the side form line of girder, according to the elements of a fix of anchor-hold point, the physical location of the anchoring tooth block models marking on girder soffit formwork face, then anchoring tooth block models is fixed in this physical location;
(3) the pre-buried location of form anchor and noose pipe: the lower end welding of form anchor and noose pipe, on anchoring tooth block models, unwrapping wire goes out drag-line fixed end form anchor and the physical location line for the locating hole of fixing form anchor; In order to prevent form anchor downslide displacement, be provided with the through hole for locating in the bottom of form anchor, and form anchor be fixed on anchoring tooth block models with bolt;
(4) calculate according to the angle of inclination of noose pipe the noose pipe embedded bracket of making for controlling pre-buried noose tube angulation, noose pipe embedded bracket is arranged on the below of noose pipe and holds noose pipe, makes noose tube angulation, direction and noose pipe meet design and code requirement completely in deviation along the bridge.
2. girder cable sleeve localization method according to claim 1, is characterized in that: described noose pipe embedded bracket reinforcing bar welding is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210325397.2A CN102828470B (en) | 2012-09-05 | 2012-09-05 | Method for locating main girder cable sleeve of cable-stayed bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210325397.2A CN102828470B (en) | 2012-09-05 | 2012-09-05 | Method for locating main girder cable sleeve of cable-stayed bridge |
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| CN102828470A CN102828470A (en) | 2012-12-19 |
| CN102828470B true CN102828470B (en) | 2014-06-11 |
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| CN201210325397.2A Expired - Fee Related CN102828470B (en) | 2012-09-05 | 2012-09-05 | Method for locating main girder cable sleeve of cable-stayed bridge |
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| CN103114528A (en) * | 2013-02-04 | 2013-05-22 | 中天建设集团有限公司 | Viaduct inclined web positioning and formwork-supporting tool |
| CN103132455B (en) * | 2013-03-12 | 2015-06-10 | 中铁四局集团第二工程有限公司 | Three-dimensional combined type cable-stayed bridge body cable duct accurate positioning device and positioning method |
| CN106638318B (en) * | 2016-11-25 | 2019-03-15 | 中铁大桥局集团第五工程有限公司 | Locating method of anchor point at end of cable-stayed bridge and installation method of cable conduit |
| CN106948272B (en) * | 2017-05-04 | 2018-12-28 | 绍兴市柯桥区鑫博知识产权服务中心 | A cable-stayed bridge main tower cable casing installation measurement lofting locator |
| CN109376391A (en) * | 2018-09-20 | 2019-02-22 | 中国铁路设计集团有限公司 | A kind of tooth block design method based on BIM |
| CN109505260A (en) * | 2018-12-25 | 2019-03-22 | 中铁大桥局第七工程有限公司 | A kind of positioning device and localization method of finished main cable shape of self-anchored suspension anchor tube |
| CN109629395B (en) * | 2019-02-02 | 2024-02-02 | 中铁十五局集团第一工程有限公司 | Limiting V-shaped clamping plate for positioning concrete stay cable guide pipe and use method |
| CN111663428B (en) * | 2020-06-24 | 2022-01-04 | 中铁二院工程集团有限责任公司 | A negative stay suspension bridge |
| CN112069583B (en) * | 2020-09-08 | 2023-10-20 | 中国十七冶集团有限公司 | Safe and intelligent construction system and method for oblique cantilevers based on finite element synchronous analysis |
| CN112609576B (en) * | 2020-11-19 | 2022-05-31 | 中铁二局集团有限公司 | Method and device for positioning and installing spatial attitude of stay cable guide pipe |
| CN112813833B (en) * | 2020-12-31 | 2022-12-27 | 中交路桥华南工程有限公司 | Installation method of cableway pipe |
| CN113481868B (en) * | 2021-07-30 | 2022-07-26 | 中国建筑第八工程局有限公司 | Cableway positioning device and method with anchor point adjusting structure for cable-stayed bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2475598A1 (en) * | 1980-02-08 | 1981-08-14 | Freyssinet Internal | APPLICATION OF AUTODESTRUCTIBLE MIXTURES BASED ON RESINS AND OXIDIZING LOADS TO THE PRODUCTION OF TEMPORARY LINKS OF CONSTRUCTION ELEMENTS |
| CN201228345Y (en) * | 2008-06-11 | 2009-04-29 | 中铁工程设计咨询集团有限公司 | Rotary spherical hinge positioning apparatus on top of bridge pier |
| CN201217781Y (en) * | 2008-06-20 | 2009-04-08 | 龙建路桥股份有限公司 | Positioning apparatus |
| CN101446071B (en) * | 2008-12-30 | 2010-09-15 | 中铁二局股份有限公司 | Method of exactly adjusting and locating curve steel box beam |
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Inventor after: Su He Inventor after: Wang Haiyu Inventor after: Wu Jianying Inventor after: He Kaiwei Inventor after: Zhang Qingbin Inventor before: Wang Haiyu Inventor before: Su He Inventor before: He Kaiwei |
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Free format text: CORRECT: INVENTOR; FROM: WANG HAIYU SU HE HE KAIWEI TO: SU HE WANG HAIYU WU JIANYING HE KAIWEI ZHANG QINGBIN |
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Address after: Yaohai District of Hefei City, the 230011 major channels of Anhui province No. 51 days of International Building building 22-24 Patentee after: China Construction Seventh Engineering Bureau The Second Co.,Ltd. Address before: 230011, 5 floor, business center, Dongfang shopping mall, 48 Mingguang Road, Anhui, Hefei Patentee before: China Construction Seventh Engineering Bureau The Second Co.,Ltd. |
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Granted publication date: 20140611 Termination date: 20210905 |
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