CN106638318B - The localization method and cable guide pipe installation method of cable-stayed bridge beam-ends anchor point - Google Patents

The localization method and cable guide pipe installation method of cable-stayed bridge beam-ends anchor point Download PDF

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Publication number
CN106638318B
CN106638318B CN201611059186.3A CN201611059186A CN106638318B CN 106638318 B CN106638318 B CN 106638318B CN 201611059186 A CN201611059186 A CN 201611059186A CN 106638318 B CN106638318 B CN 106638318B
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cable
coordinate
suspension cable
anchor plate
guide pipe
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CN106638318A (en
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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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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods 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 kind of cable-stayed bridge beam-ends cable guide pipe installation method, include the following steps: to construct three-dimensional system of coordinate, using cable-stayed bridge direction across bridge as 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;Coordinate according to the anchoring central point known to design drawing in three-dimensional system of coordinate is (X0, Y0, Z0) and suspension cable center line and X/Y plane between angle ɑ, the coordinate of four angle points of suspension cable anchor plate installed position is calculated by anti-pushing manipulation.First calculate the space coordinate of four angle points of anchor plate installed position, four installation site points of setting out survey mark in anchoring tooth block template, pass through the spatial position of constantly adjustment installation site point and four angle points in the installation process for carrying out anchoring tooth block template, until the installation site point of anchoring tooth block template is overlapped with the spatial position of four angle points, have many advantages, such as that simple, convenient construction is installed.

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 fields, and in particular to a kind of localization method of cable-stayed bridge beam-ends anchor point and Cable guide pipe installation method.
Background technique
Suspension cable is the important component of cable-stayed bridge, and the positioning of cable guide pipe is after whether precise relation arrives in stayed Cable Construction Hanging cable, tensioning and the Suo Li control of phase suspension cable.In wide cut Construction of Cable-Stayed Bridges, by Hanging Basket deformation, cantilever beam body amount of deflection Etc. factors influence it is difficult relative to the anchoring point location of king-tower cable guide pipe and there are position inaccurates.But in CONSTRUCTION OF CABLE-STAYED BRIDGE tiltedly Drag-line beam anchor point location can accurately seriously affect later period hanging cable, tensioning and tune rope.
Hanging basket on front support construction technology is generally used, suspension cable tensioning in three times, the positioning of beam-ends cable guide pipe is first by rope Conduit is fixed on suspension cable, installs suspension cable and cable guide pipe exit point is arranged and lift in advance, finally complete small inclined guy cable stretching.Generally In the case of, design only gives the basic parameter of cable guide pipe under bridge completion state, and the cable guide pipe in construction each segment of middle girder is fixed Position is but very big by the dynamic influence of construction such as Hanging Basket deformation, cantilever beam body amount of deflection, positioning difficulty.Traditional handicraft is by cable guide pipe Appropriate pre- lift is handled 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 case where catheter center.Conventional mounting arrangements precision is low, poor reliability, low efficiency, needs to be repeated several times erection instrument, time-consuming Long, manning is more, and installation is complicated, and is easy to be influenced by weather.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide and a kind of 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 meets Design requirement has the advantages that precision is high, facilitates installation and high reliablity.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of cable guide pipe installation method based on such as cable-stayed bridge beam-ends anchor point localization method, the cable-stayed bridge beam-ends anchor point Localization method, include the following steps: to construct three-dimensional system of coordinate, using cable-stayed bridge direction across bridge as X-axis, along bridge to for Y-axis, vertical bridge to For Z axis, and the origin of three-dimensional system of coordinate is tower central point;
Coordinate according to the anchoring central point 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,
It is respectively (X by the coordinate that anti-pushing manipulation calculates four angle points of suspension cable anchor plate installed position1, Y1, Z1)、(X2, Y2, Z2)、(X3, Y3, Z3) and (X4, Y4, Z4),
Specific step is as follows for cable guide pipe installation method:
S1 makes cable guide pipe and anchoring tooth block template according to presupposed solution, and cable guide pipe is vertical with suspension cable anchor plate Welding;
S2, installation and adjustment Hanging Basket to Hanging Basket design position;
S3 calculates the coordinate of four angle points of suspension cable anchor plate installed position according to the localization method, obtains To the spatial position of four angle points of suspension cable anchor plate installed position, the surveying and locating on the anchoring face of anchoring tooth block template Four installation site points out, and the spatial position of four angle points of installation site point and suspension cable anchor plate corresponds, by anchor Permanent tooth block template is installed to design position, and at design position installation site point respectively with four angle point weights of suspension cable anchor plate It closes;
Four angle points of suspension cable anchor plate are overlapped with four installation site points, so that suspension cable anchor plate by S4 respectively It is fitted closely with anchoring face, embedded bar bracket is arranged according to the tilt angle of suspension cable, embedded bar bracket holds fixed rope Conduit.
Based on the above technical solution, the coordinate calculation formula of four angle points of suspension cable anchor plate installed position It is as follows:
Wherein, L is the side length of anchor plate.
Compared with the prior art, the advantages of the present invention are as follows:
(1) a kind of localization method of cable-stayed bridge beam-ends anchor point of the invention is rear using by establishing space coordinates The anchoring central point known carries out the space coordinate that Extrapolation goes out four angle points of anchor plate installed position, is disturbed factor It is small, 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 coordinate 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 adjusting in the installation process for carrying out anchoring tooth block template The spatial position of installation site point and four angle points, until the space bit of the installation site point and four angle points of anchoring tooth block template Coincidence is set, anchoring tooth block template can be accurately installed, the precise positioning that anchor plate realizes cable guide pipe is then fixed again, there is essence Exactness is high, good reliability, high-efficient, does not need to repeat to set up instrument, and time-consuming is few, and staffing is less, installation is simple, construction just The advantages that sharp.
Detailed description of the invention
Fig. 1 is that Hanging Basket is installed to the structural schematic diagram after design position in the embodiment of the present invention;
Fig. 2 is that anchoring tooth block template is installed to the structural schematic diagram after design position in the embodiment of the present invention;
Fig. 3 is the structural schematic diagram of cable guide pipe location and installation in the embodiment of the present invention.
In figure: 1- Hanging Basket, 2- anchor tooth block template, 3- cable guide pipe, 4- Steel bar rack.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
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 walks as follows It is rapid: building three-dimensional system of coordinate, using cable-stayed bridge direction across bridge as X-axis, along bridge to being Y-axis, vertical bridge to for Z axis, and three-dimensional system of coordinate Origin is tower central point;
Coordinate according to the anchoring central point 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 calculation 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 side length of anchor plate.
A kind of 3 installation method of cable guide pipe, which is characterized in that specific step is as follows:
S1 fabricates cable guide pipe 3 according to 3 design scheme of cable guide pipe of design drawing, by the 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 scheme processing and manufacturing anchoring tooth block template 2 of the anchoring tooth block template 2 of design drawing, tooth block mould is anchored It reeves equipped with suspension cable and uses reserved through hole in the anchoring face of plate 2;
S2, shown in Figure 1, installation and adjustment Hanging Basket 1 to Hanging Basket design position;
S3, firstly, 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:
Three-dimensional system of coordinate is constructed, using cable-stayed bridge direction across bridge as X-axis, along bridge to being Y-axis, vertical bridge to for Z axis, and three-dimensional coordinate The origin of system is tower central point;
Coordinate according to the anchoring central point 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 calculation 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 side length 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 spatial position;
Secondly, shown in referring to figs. 2 and 3, according to known girder suspension cable anchor block and Anchorage Parameters table in anchoring tooth block Surveying and locating goes out four installation site points, and four angle points of installation site point and suspension cable anchor plate on the anchoring face of template 2 Spatial position correspond;
Again, in the installation process of anchoring tooth block template 2, the space bit of four installation points and four intersection points is constantly adjusted Set, until tooth block template 2 will be anchored be installed to design position, and at design position installation site point respectively with suspension cable anchor plate Four angle points be overlapped;
S5, it is shown in Figure 3, four angle points of suspension cable anchor plate are overlapped with four installation site points respectively, so that Suspension cable anchor plate is fitted closely with anchoring face, and embedded bar bracket 4, embedded bar branch is arranged according to the tilt angle of suspension cable Frame 4 holds fixed cable guide pipe 3.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.

Claims (2)

1. a kind of cable guide pipe installation method based on cable-stayed bridge beam-ends anchor point localization method, the cable-stayed bridge beam-ends anchor point Localization method the following steps are included:
Three-dimensional system of coordinate is constructed, using cable-stayed bridge direction across bridge as X-axis, along bridge to being Y-axis, vertical bridge to for Z axis, and three-dimensional system of coordinate Origin is tower central point;
Coordinate according to the anchoring central point 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,
It is respectively (X by the coordinate that anti-pushing manipulation calculates four angle points of suspension cable anchor plate installed position1, Y1, Z1)、(X2, Y2, Z2)、(X3, Y3, Z3) and (X4, Y4, Z4), which is characterized in that specific step is as follows for the cable guide pipe installation method:
S1 makes cable guide pipe and anchoring tooth block template according to presupposed solution, and by cable guide pipe and suspension cable anchor plate vertical welding;
S2, installation and adjustment Hanging Basket to Hanging Basket design position;
S3 calculates the coordinate of four angle points of suspension cable anchor plate installed position according to localization method, obtains suspension cable anchor The spatial position of four angle points of backing plate installed position, surveying and locating goes out four installations on the anchoring face of anchoring tooth block template Location point, and the spatial position of four angle points of installation site point and suspension cable anchor plate corresponds, and will anchor tooth block template It is installed to design position, and installation site point is overlapped with four angle points of suspension cable anchor plate respectively at design position;
Four angle points of suspension cable anchor plate are overlapped with four installation site points, so that suspension cable anchor plate and anchor by S4 respectively Gu face fits closely, embedded bar bracket is arranged according to the tilt angle of suspension cable, embedded bar bracket holds fixed cable guide pipe.
2. cable guide pipe installation method as described in claim 1, it is characterised in that:
The coordinate calculation formula of four angle points of suspension cable anchor plate installed position is as follows:
Wherein, L is the side length 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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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
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
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
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
CN114855619B (en) * 2022-04-27 2023-07-04 中铁重工有限公司 Manufacturing method of special-shaped independent tower and corresponding bridge deck anchoring structure
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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