CN106638318A - Method for positioning anchor point of beam end of cable stayed bridge and installation method of cable guide pipe - Google Patents

Method for positioning anchor point of beam end of cable stayed bridge and installation method of cable guide pipe Download PDF

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Publication number
CN106638318A
CN106638318A CN201611059186.3A CN201611059186A CN106638318A CN 106638318 A CN106638318 A CN 106638318A CN 201611059186 A CN201611059186 A CN 201611059186A CN 106638318 A CN106638318 A CN 106638318A
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China
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cable
alpha
anchor plate
coordinate
suspension cable
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CN201611059186.3A
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CN106638318B (en
Inventor
尹振君
梅文兵
孙国光
付浩
严杰
李洪锐
何树厚
徐毓敏
安东航
陈文�
浦喻春
王俊华
雷楗
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China Railway Major Bridge Engineering Group Co Ltd MBEC
5th Engineering Co Ltd of MBEC
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China Railway Major Bridge Engineering Group Co Ltd MBEC
5th Engineering Co Ltd of MBEC
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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

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention discloses a method for positioning an anchor point of the beam end of a cable stayed bridge and an installation method of a cable guide pipe. The method for positioning the anchor point of the beam end of the cable stayed bridge includes the following steps: constructing a 3D coordinate system, wherein the transverse direction of the cable stayed bridge serves as the X axis, the axial direction of the cable stayed bridge serves as the Y axis, the longitudinal direction of the cable stayed bridge serves as the Z axis, and an original point of the 3D coordinate system serves as a tower central point; according to a known coordinate (X0, Y0 and Z0) of an anchoring central point in the 3D coordinate system and the known included angle alpha between a stayed cable and an XY plane from a design drawing, calculating the space coordinates of four corner points in the installation position of a cable stayed anchor base plate through a reverse-reasoning method. The space coordinates of the four corner points in the installation position of the anchor base plate are firstly calculated, a sample is placed on an anchoring tooth block template, four mounting location points in the marking position are measured, and in the installation process of the anchoring tooth block template, the space locations of the mounting location points and the space locations of the four corner points are adjusted constantly until the space locations of the mounting location points of the anchoring tooth block template coincide with those of the four corner points. The method for positioning the anchor point of the beam end of the cable stayed bridge and the installation method of the cable guide pipe have the advantages of being simple in installation, convenient in construction and the like.

Description

The localization method and cable guide pipe installation method of cable-stayed bridge beam-ends anchor point
Technical field
The present invention relates to CONSTRUCTION OF CABLE-STAYED BRIDGE technical field, and in particular to a kind of localization method of cable-stayed bridge beam-ends anchor point and Cable guide pipe installation method.
Background technology
Suspension cable is the important component part of cable-stayed bridge, and the positioning of cable guide pipe is after precise relation is arrived in stayed Cable Construction The hanging cable of phase suspension cable, tensioning and Suo Li control.In wide cut Construction of Cable-Stayed Bridges, by Hanging Basket deformation, cantilever beam body amount of deflection It is difficult and to there is positioning inaccurate relative to the anchoring point location of king-tower cable guide pipe etc. the impact of factor.But in CONSTRUCTION OF CABLE-STAYED BRIDGE tiltedly Drag-line beam anchor point location accurately can have a strong impact on later stage hanging cable, tensioning and adjust rope.
Typically using Hanging basket on front support construction technology, suspension cable tensioning in three times, the positioning of beam-ends cable guide pipe is first by rope Conduit is fixed on suspension cable, is installed suspension cable and is arranged cable guide pipe exit point and lifts in advance, finally completes little inclined guy cable stretching.Typically In the case of, design only gives the basic parameter of cable guide pipe under bridge completion state, and the cable guide pipe in each sections of construction middle girder is determined Position is but subject to the dynamic impact of construction such as Hanging Basket deformation, cantilever beam body amount of deflection, and positioning difficulty is very big.Traditional handicraft is by cable guide pipe Appropriate pre- lift is processed or rule of thumb done with the direct centering of suspension cable, suspension cable often occurs not in rope after stay cable force adjustment The situation of catheter center.Conventional mounting arrangements precision is low, and poor reliability, efficiency are low, needs that erection instrument is repeated several times, and takes Long, manning is more, installs complicated, and is easily affected by weather.
The content of the invention
For defect present in prior art, it is an object of the invention to provide a kind of and cable-stayed bridge beam-ends anchor point Localization method and cable guide pipe installation method, can accurately calculate suspension cable anchor point so that the spatial attitude of cable guide pipe symbol Design requirement is closed, has the advantages that high precision, convenient installation and reliability are high.
To reach object above, the present invention is adopted the technical scheme that：
A kind of localization method of cable-stayed bridge beam-ends anchor point, comprises the steps：Three-dimensional system of coordinate is built, it is horizontal with cable-stayed bridge Bridge to for X-axis, along bridge to being Y-axis, vertical bridge to for Z axis, and the origin of three-dimensional system of coordinate is tower central point；
The coordinate of the anchoring central point according to known to design drawing in three-dimensional system of coordinate is (X0, Y0, Z0) and suspension cable in Angle ɑ between heart line and X/Y plane,
The coordinate that four angle points of suspension cable anchor plate installed position are calculated by anti-pushing manipulation is respectively (X1, Y1, Z1)、(X2, Y2, Z2)、(X3, Y3, Z3) and (X4, Y4, Z4)。
On the basis of above-mentioned technical proposal, the coordinate computing formula of four angle points of suspension cable anchor plate installed position It is as follows：
Wherein, L is the length of side of anchor plate.
A kind of cable guide pipe installation method based on localization method as claimed in claim 1, comprises the following steps that：
S1, according to presupposed solution cable guide pipe and anchoring tooth block template are made, and cable guide pipe is vertical with suspension cable anchor plate Welding；
S2, installs and adjusts Hanging Basket to Hanging Basket design attitude；
S3, the coordinate of four angle points of suspension cable anchor plate installed position is calculated according to the localization method, is obtained To the locus of four angle points of suspension cable anchor plate installed position, the surveying and locating on the anchoring face of anchoring tooth block template Go out four installation site points, and installation site point is corresponded with the locus of four angle points of suspension cable anchor plate, by anchor Permanent tooth block model sheetinstallat to design attitude, and at design attitude installation site point respectively with four angle point weights of suspension cable anchor plate Close；
S4, four angle points of suspension cable anchor plate is overlapped respectively with four installation site points so that suspension cable anchor plate It is brought into close contact with anchoring face, embedded bar support is arranged according to the angle of inclination of suspension cable, embedded bar support holds fixed rope Conduit.
On the basis of above-mentioned technical proposal, the coordinate computing formula of four angle points of suspension cable anchor plate installed position It is as follows：
Wherein, L is the length of side of anchor plate.
Compared with prior art, it is an advantage of the current invention that：
(1) a kind of localization method of cable-stayed bridge beam-ends anchor point of the invention is by setting up space coordinates, afterwards using The anchoring central point known carries out the space coordinates that Extrapolation goes out four angle points of anchor plate installed position, is disturbed factor It is little, accurate positioning.
(2) cable guide pipe installation method of the invention first calculates anchor plate using the localization method of cable-stayed bridge beam-ends anchor point The space coordinates of four angle points of installed position, by known girder suspension cable anchor block and Anchorage Parameters table in anchoring tooth block Four installation site points of setting out survey mark in template, by constantly tune in the installation process for carrying out anchoring tooth block template The locus of whole installation site point and four angle points, until the space of the installation site point of anchoring tooth block template and four angle points Position overlaps, and can accurately install anchoring tooth block template, and the precise positioning that anchor plate realizes cable guide pipe is then fixed again, has Accuracy is high, good reliability, efficiency high, it is not necessary to repeats to set up instrument, takes less, staffing is less, installs simple, construction Convenient the advantages of.
Description of the drawings
Fig. 1 is that Hanging Basket is installed to the structural representation after design attitude in the embodiment of the present invention；
Fig. 2 is that the structural representation after tooth block model sheetinstallat to design attitude is anchored in the embodiment of the present invention；
Fig. 3 is the structural representation of cable guide pipe location and installation in the embodiment of the present invention.
In figure：1- Hanging Baskets, 2- anchoring tooth block templates, 3- cable guide pipes, 4- Steel bar racks.
Specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Shown in Figure 1, the embodiment of the present invention provides a kind of localization method of cable-stayed bridge beam-ends anchor point, including following step Suddenly：Build three-dimensional system of coordinate, with cable-stayed bridge direction across bridge as X-axis, along bridge to as Y-axis, vertical bridge to as Z axis, and three-dimensional system of coordinate Origin is tower central point；
The coordinate of the anchoring central point according to known to design drawing in three-dimensional system of coordinate is (X0, Y0, Z0) and suspension cable in Angle ɑ between heart line and X/Y plane；
By the coordinate computing formula of four angle points of suspension cable anchor plate installed position, suspension cable anchor plate is calculated The coordinate of four angle points of installed position is respectively (X1, Y1, Z1)、(X2, Y2, Z2)、(X3, Y3, Z3) and (X4, Y4, Z4), formula It is as follows：
Wherein, L is the length of side of anchor plate.
The installation method of a kind of cable guide pipe 3, it is characterised in that comprise the following steps that：
S1, according to the design of cable guide pipe 3 of design drawing cable guide pipe 3 is fabricated, by the management and control of cable guide pipe 3 and anchor pad The anchorage hole of plate is arranged concentrically, and by cable guide pipe 3 and suspension cable anchor plate vertical welding；
According to the design processing and manufacturing anchoring tooth block template 2 of the anchoring tooth block template 2 of design drawing, tooth block mould is anchored The anchoring face of plate 2 is provided with suspension cable reeves and uses reserved through hole；
S2, it is shown in Figure 1, install and adjust Hanging Basket 1 to Hanging Basket design attitude；
S3, first, the coordinate for calculating four angle points of suspension cable anchor plate installed position is respectively (X1, Y1, Z1)、 (X2, Y2, Z2)、(X3, Y3, Z3) and (X4, Y4, Z4), calculating process is as follows：
Build three-dimensional system of coordinate, with cable-stayed bridge direction across bridge as X-axis, along bridge to as Y-axis, vertical bridge to as Z axis, and three-dimensional coordinate The origin of system is tower central point；
The coordinate of the anchoring central point according to known to design drawing in three-dimensional system of coordinate is (X0, Y0, Z0) and suspension cable in Angle ɑ between heart line and X/Y plane；
By the coordinate computing formula of four angle points of suspension cable anchor plate installed position, suspension cable anchor plate is calculated The coordinate of four angle points of installed position is respectively (X1, Y1, Z1)、(X2, Y2, Z2)、(X3, Y3, Z3) and (X4, Y4, Z4), formula It is as follows：
Wherein, L is the length of side of anchor plate, and the specification of suspension cable anchor plate is LXL in the present embodiment；
Suspension cable anchor plate installed position is obtained according to the coordinate of four angle points of suspension cable anchor plate installed position Four angle points locus；
Secondly, it is shown in Figure 2, according to known girder suspension cable anchor block and Anchorage Parameters table in anchoring tooth block template 2 Anchoring face on surveying and locating go out four installation site points, and the space of installation site point and four angle points of suspension cable anchor plate Position corresponds；
Again, in the installation process of anchoring tooth block template 2, the space bit of four mount points and four intersection points is constantly adjusted Put, until will anchoring tooth block template 2 be installed at design attitude, and design attitude installation site point respectively with suspension cable anchor plate Four angle points overlap；
S5, it is shown in Figure 3, four angle points of suspension cable anchor plate are overlapped respectively with four installation site points so that Suspension cable anchor plate is brought into close contact with anchoring face, and according to the angle of inclination of suspension cable embedded bar support 4, embedded bar are arranged Frame 4 holds fixed cable guide pipe 3.
The present invention is not limited to above-mentioned embodiment, for those skilled in the art, without departing from On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as the protection of the present invention Within the scope of.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.

Claims (4)

1. a kind of localization method of cable-stayed bridge beam-ends anchor point, it is characterised in that comprise the steps：Build three-dimensional system of coordinate, With cable-stayed bridge direction across bridge as X-axis, along bridge to as Y-axis, vertical bridge to as Z axis, and the origin of three-dimensional system of coordinate is tower central point；
The coordinate of the anchoring central point according to known to design drawing in three-dimensional system of coordinate is (X0, Y0, Z0) and suspension cable center line Angle ɑ between X/Y plane,
The coordinate that four angle points of suspension cable anchor plate installed position are calculated by anti-pushing manipulation is respectively (X1, Y1, Z1)、(X2, Y2, Z2)、(X3, Y3, Z3) and (X4, Y4, Z4)。
2. a kind of localization method of cable-stayed bridge beam-ends anchor point as claimed in claim 1, it is characterised in that：Suspension cable anchor plate The coordinate computing formula of four angle points of installed position is as follows：
X 1 = X 0 + L 2 , Y 1 = Y 0 + L s i n α 2 , Z 1 = Z 0 + L c o s α 2 ;
X 2 = X 0 - L 2 , Y 2 = Y 0 + L s i n α 2 , Z 2 = Z 0 + L c o s α 2 ;
X 3 = X 0 - L 2 , Y 3 = Y 0 - L s i n α 2 , Z 3 = Z 0 - L c o s α 2 ;
X 4 = X 0 + L 2 , Y 4 = Y 0 - L s i n α 2 , Z 4 = Z 0 - L c o s α 2 ;
Wherein, L is the length of side of anchor plate.
3. a kind of cable guide pipe installation method based on localization method as claimed in claim 1, it is characterised in that concrete steps are such as Under：
S1, according to presupposed solution cable guide pipe and anchoring tooth block template are made, and by cable guide pipe and suspension cable anchor plate vertical welding；
S2, installs and adjusts Hanging Basket to Hanging Basket design attitude；
S3, the coordinate of four angle points of suspension cable anchor plate installed position is calculated according to the localization method, is obtained tiltedly The locus of four angle points of drag-line anchor plate installed position, surveying and locating goes out four on the anchoring face of anchoring tooth block template Individual installation site point, and installation site point and the locus one-to-one corresponding of four angle points of suspension cable anchor plate, will anchor tooth Block model sheetinstallat is to design attitude, and installation site point overlaps respectively with four angle points of suspension cable anchor plate at design attitude；
S4, four angle points of suspension cable anchor plate is overlapped respectively with four installation site points so that suspension cable anchor plate and anchor Gu face is brought into close contact, embedded bar support is arranged according to the angle of inclination of suspension cable, embedded bar support holds fixed cable guide pipe.
4. cable guide pipe installation method as claimed in claim 3, it is characterised in that：
The coordinate computing formula of four angle points of suspension cable anchor plate installed position is as follows：
X 1 = X 0 + L 2 , Y 1 = Y 0 + L s i n α 2 , Z 1 = Z 0 + L c o s α 2 ;
X 2 = X 0 - L 2 , Y 2 = Y 0 + L s i n α 2 , Z 2 = Z 0 + L c o s α 2 ;
X 3 = X 0 - L 2 , Y 3 = Y 0 - L s i n α 2 , Z 3 = Z 0 - L c o s α 2 ;
X 4 = X 0 + L 2 , Y 4 = Y 0 - L s i n α 2 , Z 4 = Z 0 - L c o s α 2 ;
Wherein, L is the length of side of anchor plate.
CN201611059186.3A 2016-11-25 2016-11-25 The localization method and cable guide pipe installation method of cable-stayed bridge beam-ends anchor point Active CN106638318B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108330841A (en) * 2018-03-06 2018-07-27 中铁四局集团第二工程有限公司 Concrete pylon cable guide pipe accurate-location device and its localization method
CN110241735A (en) * 2019-06-14 2019-09-17 中铁大桥局集团第一工程有限公司 The positioning adjustment device and method of adjustment of Cable stayed Bridge Main Tower cable guide pipe
CN110280838A (en) * 2018-08-08 2019-09-27 江苏中铁山桥重工有限公司 A kind of spherical surface steel structure surface positioning cut hole method
CN112064519A (en) * 2020-08-28 2020-12-11 中铁大桥局集团有限公司 Long platform guy cable hanging basket and main beam segment construction method
CN113605231A (en) * 2021-07-07 2021-11-05 河海大学 Method for determining angle of guide pipe of segmental precast concrete cable-stayed bridge cable
CN114855619A (en) * 2022-04-27 2022-08-05 中铁重工有限公司 Manufacturing method of special-shaped single tower and corresponding bridge deck anchoring structure
CN117906466A (en) * 2024-03-15 2024-04-19 中交第一航务工程局有限公司 Center position retest method for anchor backing plate of embedded cable conduit at beam end of concrete cable-stayed bridge

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JP4847789B2 (en) * 2006-05-25 2011-12-28 株式会社エスイー Cable laying method
CN101736698B (en) * 2009-12-15 2011-05-04 中交路桥华北工程有限公司 Accurate positioning method for cable-stayed bridge pylon cable guide pipe
CN102828470B (en) * 2012-09-05 2014-06-11 中建七局第二建筑有限公司 Method for locating main girder cable sleeve of cable-stayed bridge
CN102966041A (en) * 2012-11-08 2013-03-13 山西省第二建筑工程公司 Spatial stay-cable positioning method of multispan continuous S-shaped landscape bridge
CN105113411B (en) * 2015-08-03 2017-08-15 中铁广州工程局集团有限公司 A kind of Cable stayed Bridge Main Tower cable guide pipe is installed and quick accurate positioning method
CN105648923B (en) * 2016-03-31 2017-05-10 中铁四局集团第一工程有限公司 Stay cable saddle positioning method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108330841A (en) * 2018-03-06 2018-07-27 中铁四局集团第二工程有限公司 Concrete pylon cable guide pipe accurate-location device and its localization method
CN108330841B (en) * 2018-03-06 2024-05-07 中铁四局集团有限公司 Accurate positioning device and positioning method for cable guide pipe of concrete cable tower
CN110280838A (en) * 2018-08-08 2019-09-27 江苏中铁山桥重工有限公司 A kind of spherical surface steel structure surface positioning cut hole method
CN110280838B (en) * 2018-08-08 2021-07-30 江苏中铁山桥重工有限公司 Method for positioning and cutting hole on surface of spherical steel structure
CN110241735A (en) * 2019-06-14 2019-09-17 中铁大桥局集团第一工程有限公司 The positioning adjustment device and method of adjustment of Cable stayed Bridge Main Tower cable guide pipe
CN110241735B (en) * 2019-06-14 2024-02-27 中铁大桥局集团第一工程有限公司 Positioning and adjusting device and method for main tower cable guide pipe of cable-stayed bridge
CN112064519A (en) * 2020-08-28 2020-12-11 中铁大桥局集团有限公司 Long platform guy cable hanging basket and main beam segment construction method
CN112064519B (en) * 2020-08-28 2021-09-14 中铁大桥局集团有限公司 Long platform guy cable hanging basket and main beam segment construction method
CN113605231A (en) * 2021-07-07 2021-11-05 河海大学 Method for determining angle of guide pipe of segmental precast concrete cable-stayed bridge cable
CN114855619A (en) * 2022-04-27 2022-08-05 中铁重工有限公司 Manufacturing method of special-shaped single tower and corresponding bridge deck anchoring structure
CN117906466A (en) * 2024-03-15 2024-04-19 中交第一航务工程局有限公司 Center position retest method for anchor backing plate of embedded cable conduit at beam end of concrete cable-stayed bridge
CN117906466B (en) * 2024-03-15 2024-05-24 中交第一航务工程局有限公司 Center position retest method for anchor backing plate of embedded cable conduit at beam end of concrete cable-stayed bridge

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