CN106638318B - Locating method of anchor point at end of cable-stayed bridge and installation method of cable conduit - Google Patents

Locating method of anchor point at end of cable-stayed bridge and installation method of cable conduit 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
anchor plate
installation
coordinate
bridge
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CN106638318A (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 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)

1.一种基于斜拉桥梁端锚固点定位方法的索导管安装方法，所述斜拉桥梁端锚固点的定位方法包括以下步骤：1. a cable guide pipe installation method based on a method for locating an anchor point at an end of a cable-stayed bridge, the method for locating an anchor point at an end of a cable-stayed bridge comprises the following steps: 构建三维坐标系，以斜拉桥横桥向为X轴、顺桥向为Y轴、纵桥向为Z轴，且三维坐标系的原点为塔中心点；Construct a three-dimensional coordinate system, taking the transverse direction of the cable-stayed bridge as the X-axis, the longitudinal direction of the bridge as the Y-axis, and the longitudinal direction of the bridge as the Z-axis, and the origin of the three-dimensional coordinate system is the center point of the tower; 根据设计图纸已知在三维坐标系中的锚固中心点的坐标为(X0，Y0，Z0)和斜拉索中心线与XY平面之间的夹角ɑ，According to the design drawings, the coordinates of the anchoring center point in the three-dimensional coordinate system are known as (X 0 , Y 0 , Z 0 ) and the angle ɑ between the center line of the stay cable and the XY plane, 通过反推法计算出斜拉索锚垫板安装位置处的四个角点的坐标分别为(X1，Y1，Z1)、(X2，Y2，Z2)、(X3，Y3，Z3)和(X4，Y4，Z4)，其特征在于，所述索导管安装方法具体步骤如下：The coordinates of the four corner points at the installation position of the stay cable anchor plate are calculated by the reverse method as (X 1 , Y 1 , Z 1 ), (X 2 , Y 2 , Z 2 ), (X 3 , Y 3 , Z 3 ) and (X 4 , Y 4 , Z 4 ), characterized in that the specific steps of the cable guide pipe installation method are as follows: S1，根据预设方案制作索导管和锚固齿块模板，并将索导管与斜拉索锚垫板垂直焊接；S1, make the template of the cable guide and the anchoring tooth block according to the preset scheme, and weld the cable guide and the anchor plate of the stay cable vertically; S2，安装调节挂篮至挂篮设计位置；S2, install and adjust the hanging basket to the design position of the hanging basket; S3，根据定位方法计算出斜拉索锚垫板安装位置处的四个角点的坐标，得到斜拉索锚垫板安装位置处的四个角点的空间位置，在锚固齿块模板的锚固面上测量放样出四个安装位置点，且安装位置点与斜拉索锚垫板的四个角点的空间位置一一对应，将锚固齿块模板安装到设计位置，且设计位置处安装位置点分别与斜拉索锚垫板的四个角点重合；S3, according to the positioning method, the coordinates of the four corner points at the installation position of the stay cable anchor plate are calculated, and the spatial positions of the four corner points at the installation position of the stay cable anchor plate are obtained. Four installation positions are measured and staked out on the surface, and the installation positions correspond to the spatial positions of the four corner points of the stay cable anchor plate. The points coincide with the four corner points of the stay cable anchor plate respectively; S4，将斜拉索锚垫板的四个角点分别与四个安装位置点重合，使得斜拉索锚垫板与锚固面紧密贴合，根据斜拉索的倾斜角度设置预埋钢筋支架，预埋钢筋支架托住固定索导管。S4, the four corner points of the stay cable anchor plate are coincident with the four installation positions respectively, so that the stay cable anchor plate and the anchoring surface are closely attached, and the pre-embedded steel reinforcement brackets are set according to the inclination angle of the stay cable. Pre-embedded steel support supports the fixed cable guide. 2.如权利要求1所述的索导管安装方法，其特征在于：2. The cable conduit installation method as claimed in claim 1, characterized in that: 斜拉索锚垫板安装位置处的四个角点的坐标计算公式如下：The coordinate calculation formula of the four corner points at the installation position of the stay cable anchor plate is as follows: 其中，L为锚垫板的边长。Among them, L is the side length of the anchor plate.
CN201611059186.3A 2016-11-25 2016-11-25 Locating method of anchor point at end of cable-stayed bridge and installation method of cable conduit Expired - Fee Related CN106638318B (en)

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CN108330841B (en) * 2018-03-06 2024-05-07 中铁四局集团有限公司 Concrete cable tower cable conduit precise positioning device and positioning method thereof
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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