CN112525170B - Suspension bridge cable saddle accurate positioning method based on APP system - Google Patents

Suspension bridge cable saddle accurate positioning method based on APP system Download PDF

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CN112525170B
CN112525170B CN202011170346.8A CN202011170346A CN112525170B CN 112525170 B CN112525170 B CN 112525170B CN 202011170346 A CN202011170346 A CN 202011170346A CN 112525170 B CN112525170 B CN 112525170B
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cable saddle
bottom plate
scattered
saddle
app system
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CN112525170A (en
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赵伟
雷楗
柏晶晶
陈健
王佳
朱建阳
郭波
常建增
张露
叶绍其
李华
孙光
沈查
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5th Engineering Co Ltd of MBEC
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
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Abstract

The invention provides an APP system-based scattered cable saddle accurate positioning method, which comprises the following steps: calculating the coordinates of the design cross line of the cable saddle bottom plate by using a coordinate positive calculation method and the spatial position relation of the cable saddle bottom plate; drawing a 1:1 three-dimensional graph of the saddle for scattering cables, and performing coordinate rechecking; an APP system is prepared, the total station and the APP system can be connected through Bluetooth, actual measurement data of the total station are transmitted to the APP system in real time, and adjustment parameters of a base plate and a saddle body of the cable saddle are automatically calculated; calculating the adjustment parameters of the base plate of the cable saddle through the position relation from a space point to a line, and adjusting the base plate of the cable saddle by using the jacks at each part; the angle of the actual measurement saddle body axis is reflected through the dihedral angle between the actual measurement plane of the cable saddle body and the design plane, and the angle of the saddle body axis is adjusted through a lifting appliance on the cable saddle gantry.

Description

Suspension bridge cable saddle accurate positioning method based on APP system
Technical Field
The invention relates to the field of measurement, in particular to an APP-system-based method for accurately positioning a suspension bridge cable saddle, and is particularly suitable for accurately positioning a suspension bridge cable saddle with a complicated space structure design.
Background
Since the 21 st century, the bridge construction business in China is developed rapidly, and the suspension bridge is a main form of a large-span bridge due to the advantages of flexibility, attractiveness, suitability for high wind and earthquake areas and the like. The cable saddle of the suspension bridge plays a role in supporting and fixing the main cable, and the design, the construction quality and the positioning precision control of the cable saddle are very important. In recent years, many people research the cable saddle positioning technology, but the design of the cable saddle structure is mostly spatial linearity, so that the angle control is difficult, the existing positioning technology has certain disadvantages, and the working efficiency is extremely low.
Disclosure of Invention
The invention aims to provide an APP system-based suspension bridge cable saddle accurate positioning method.
The first object of the present invention is achieved by:
an APP system-based suspension bridge cable saddle accurate positioning method is characterized by comprising the following steps: the method comprises the following specific steps:
A. calculating the coordinates of the design cross line of the bottom plate of the cable saddle:
calculating the coordinates of the design cross line of the cable saddle bottom plate according to a coordinate forward calculation formula and the spatial position relation of the cable saddle bottom plate; establishing a scattered cable saddle 1 by using CAD: 1, a model, namely, unfolding the calculated coordinates into a CAD (computer-aided design) drawing in a point unfolding mode, and rechecking the coordinates of the reticle designed by the base plate of the saddle;
B. determining a cable saddle bottom plate positioning method:
the coordinates of a cross line are designed on the scattered cable saddle bottom plate by actual measurement on site, because the intersection point position of the central line of the main cable in the scattered cable saddle and the connecting line of the center of the scattered cable saddle bottom plate are necessarily perpendicular to the plane of the scattered cable saddle bottom plate, a straight line is established by the intersection point position of the central line of the main cable in the scattered cable saddle and the center of the designed scattered cable saddle bottom plate, the distance from the intersection point of the intersection point position of the measured cross line point on the central line of the main cable in the scattered cable saddle and the distance from a foot on the connecting line of the center of the designed scattered cable saddle bottom plate to the intersection point of the central line of the main cable in the scattered cable saddle are calculated through the actual measurement of the cross line point, the distances from the measured cross line point to the corresponding designed longitudinal axis and transverse axis of the scattered cable saddle bottom plate are calculated, and the position of the scattered cable saddle bottom plate is adjusted through the distance from the measured cross line point to the designed longitudinal axis and transverse axis of the corresponding scattered cable saddle bottom plate;
C. determining an adjustment method of the axis angle of the saddle body of the cable rope:
designing an intersection point of central lines of main cables in the scattered cable saddle and coordinates at two ends of a pin shaft by using the scattered cable saddle to establish a design plane, establishing an actually measured plane by using the actually measured intersection point of the central lines of the main cables in the scattered cable saddle and the coordinates at two ends of the pin shaft, respectively calculating normal vectors of the design plane and the actually measured plane, calculating an included angle between the actually measured plane and the design plane, and adjusting a saddle body of the scattered cable saddle through the included angle between the actually measured plane and the design plane;
D. and (3) APP system compilation and debugging:
an APP system which can be connected with the total station through Bluetooth and automatically calculates the adjustment factors of the axial line angle of the cable saddle bottom plate and the cable saddle body is compiled by using the calculation mode determined in the step A, B, C, and the APP system is debugged by using the coordinates of any point in the CAD three-dimensional graph after the APP system is compiled;
E. the cable saddle bottom plate is accurately positioned:
firstly, respectively arranging a jack below four corner points of a scattered cable saddle bottom plate, respectively arranging a jack below the lower part of the scattered cable saddle bottom plate and below cross line points on the left side and the right side, connecting an APP system with a total station through Bluetooth, starting an automatic collimation function of the total station, vertically arranging a Leica small prism at each cross line point of the scattered cable saddle bottom plate, measuring the coordinates of the Leica small prism by using the total station, transmitting the measured coordinates measured by the total station into the APP system in real time through the Bluetooth, automatically calculating an adjustment parameter of an actual measurement point by the APP system, and adjusting the cross line position of the scattered cable saddle bottom plate by a jack arranged below the scattered cable saddle bottom plate by field personnel according to the adjustment parameter;
after the adjustment of the cross line position of the scattered cable saddle bottom plate is completed, coordinates of each angular point of the scattered cable saddle bottom plate are actually measured by using a prism-free function of a total station, the total station is connected with an APP system by using Bluetooth, the APP system automatically calculates the top parameters of each angular point position, and each angular point is adjusted by using a jack arranged below the angular point of the scattered cable saddle bottom plate on site according to the top parameters of each angular point until each angular point is adjusted to be within a design requirement range; checking whether the cross line position meets the design requirements after the adjustment of each angular point is finished, if the cross line position does not meet the repeated step E, reinforcing the cable saddle bottom plate if the cross line position meets the requirements, and taking out the jacks at each point position after the reinforcement is finished;
after the cable saddle bottom plate is positioned, embedding anchor bolts into the cable saddle buttress;
F. installing a cable saddle base:
hoisting the cable saddle base in place by using a hoisting tool arranged on a cable saddle portal frame on site, then installing the cable saddle base according to foundation bolts embedded in a cable saddle buttress and bolt holes on the cable saddle base, and removing the hoisting tool after the cable saddle base is installed;
G. adjusting the axis of the saddle body of the cable saddle;
the method comprises the following steps that a sling installed on a cable saddle portal frame is utilized on site, a cable saddle body is hoisted in place and connected with a cable saddle through a pin shaft, reflection sheets are attached to IP point positions on two sides of the cable saddle body, an APP system is connected with a total station through Bluetooth, the reflection sheet at the IP point position on one side is measured in real time, measured coordinates measured by the total station are transmitted to the APP system in real time through the Bluetooth, the APP system automatically calculates an included angle between an actually measured plane and a design plane, the cable saddle body is adjusted through the sling until the cable saddle body is adjusted to the design position, and then the cable saddle is welded to support temporarily; after the scattered cable saddle supports the welding and accomplishes temporarily, move the total powerstation to the opposite side of scattered cable saddle body, the reflector plate of actual measurement scattered cable saddle body opposite side IP point position carries out recheck to the contained angle between actual measurement plane and the design plane, if the contained angle between actual measurement plane and the design plane satisfies the design requirement, then scattered cable saddle location is accomplished, if unsatisfied, then need readjust.
The total station in the steps E and G has the angle measurement precision not lower than 0.5' and the distance measurement precision not lower than 1mm +1.5 multiplied by 10- 6D。
And E, the jack has the lifting weight of 5t and the lifting height of 130mm, has a light and firm structure, is flexible and reliable, and can be carried and operated by one person.
The coordinates of the base plate cross line of the cable saddle, the adjustment parameters of the base plate cross line and the adjustment parameters of the saddle body axis are automatically calculated by a mobile phone APP system, the fine adjustment process is realized by connecting the mobile phone APP system with a total station in a Bluetooth connection mode and automatically and intelligently finishing the automatic collimation function by the total station.
The beneficial effects of the invention are:
the mobile phone APP system based on the mobile phone is simple to operate, when the cable scattering saddle bottom plate is adjusted, the longitudinal axis and the transverse axis of the cable scattering saddle bottom plate design and a connecting line of an intersection point of a midpoint of the cable scattering saddle bottom plate and a main cable central line in the cable scattering saddle are used as reference lines, and the jacks at all parts are combined, so that the position of the cable scattering saddle bottom plate can be accurately adjusted, and the constraint of design coordinates is eliminated; the cable saddle body axis is through the dihedral angle between cable saddle design central plane and the actual measurement central plane scattered, and the hoist on the cable saddle portal is scattered in the cooperation can easily be adjusted to the design position.
The invention improves the installation precision of the cable saddle, reduces the difficulty of coordinate calculation and measurement positioning in three-dimensional space, greatly reduces the construction and measurement time and improves the measurement efficiency; the on-site positioning measurement work is automatically and intelligently carried out in a mode of connecting the mobile phone Bluetooth with the total station Bluetooth, errors caused by manual input of measured data and manual calculation are avoided, and a large amount of manpower and material resources are saved.
Drawings
FIG. 1 is a flow chart of the precise positioning of a cable saddle based on an APP system in the embodiment of the present invention;
FIG. 2 is a schematic view of the positioning of the base plate of the slack cable saddle according to an embodiment of the present invention;
FIG. 3 is a plan view of the arrangement of the bottom plate jacks of the cable saddle in the embodiment of the invention;
FIG. 4 is a schematic view of the positioning of the base of the slack cable saddle in an embodiment of the present invention;
FIG. 5 is a schematic diagram of the adjustment of the axial angle of the saddle body of the cable saddle in the embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings.
Referring to fig. 1, the method for accurately positioning a cable saddle of a suspension bridge based on an APP system provided by the invention includes the following steps:
A. calculating the coordinates of the design cross line of the bottom plate of the cable saddle:
calculating the coordinates of the design cross line of the cable saddle bottom plate 1 according to a coordinate forward calculation formula and the spatial position relation of the cable saddle bottom plate 1; establishing a scattered cable saddle 1 by using CAD: 1, a model, namely, unfolding the calculated coordinates into a CAD (computer-aided design) drawing in a point unfolding mode, and rechecking the coordinates of a cross line designed on a base plate 1 of the saddle for the scattered cables;
B. determining a cable saddle bottom plate positioning method:
the coordinates of a cross line are designed on the scattered cable saddle bottom plate 1 through field actual measurement, as the intersection point position of the central line of the main cable in the scattered cable saddle and the connecting line of the center of the scattered cable saddle bottom plate 1 are necessarily perpendicular to the plane of the scattered cable saddle bottom plate, a straight line is established by the intersection point position of the central line of the main cable in the scattered cable saddle and the center of the designed scattered cable saddle bottom plate 1, the intersection point position of the measured cross line point on the central line of the main cable in the scattered cable saddle and the distance from a foot on the connecting line of the center of the designed scattered cable saddle bottom plate to the intersection point of the central line of the main cable in the scattered cable saddle are calculated through the actual measurement cross line point, then the distances from the actual measurement cross line point to the corresponding designed longitudinal axis and transverse axis of the scattered cable saddle bottom plate 1 are calculated, and the distance from the actual measurement cross line point to the corresponding designed longitudinal axis and transverse axis of the scattered cable saddle bottom plate 1 is used for adjusting the position of the scattered cable saddle bottom plate;
C. determining the axis angle adjustment method of the saddle of the guyed cable:
designing an intersection point of central lines of main cables in the scattered cable saddle and coordinates at two ends of a pin shaft by using the scattered cable saddle to establish a design plane, establishing an actually measured plane by using the actually measured intersection point of the central lines of the main cables in the scattered cable saddle and the coordinates at two ends of the pin shaft, respectively calculating normal vectors of the design plane and the actually measured plane, calculating an included angle between the actually measured plane and the design plane to obtain an included angle between the actually measured plane and the design plane, and adjusting the scattered cable saddle body 9 by using the included angle between the actually measured plane and the design plane;
D. and (3) APP system compilation and debugging:
an APP system which can be connected with a total station through Bluetooth and automatically calculates the adjustment factors of the axial angles of the cable saddle bottom plate 1 and the cable saddle body 9 is compiled by using the calculation mode determined in the step A, B, C, and the APP system is debugged by using the coordinates of any point in the CAD three-dimensional graph after the APP system is compiled;
E. the cable saddle bottom plate is accurately positioned:
firstly, arranging four jacks 34, 35, 36 and 37 below four corner points of a scattered cable saddle bottom plate 1, respectively arranging jacks 31, 32 and 33 at cross line points on the lower part, the left side and the right side of the scattered cable saddle bottom plate 1, connecting an APP system with a total station 4 through Bluetooth, starting an automatic collimation function of the total station 4, vertically arranging a Ricka small prism 5 at each cross line point of the scattered cable saddle bottom plate 1, measuring the coordinates of the Ricka small prism 5 by using the total station 4, transmitting the measured coordinates measured by the total station 4 into the APP system in real time through the Bluetooth, automatically calculating the adjustment parameters of the measured point by the APP system, and adjusting the cross line position of the scattered cable saddle bottom plate 1 by using the jacks 31, 32 and 33 arranged at the cross line position of the scattered cable saddle bottom plate 1 by field personnel according to the adjustment parameters;
after the adjustment of the cross line position of the cable saddle bottom plate 1 is completed, coordinates of each angular point of the cable saddle bottom plate 1 are actually measured by using a prism-free function of the total station 4, the total station 4 is connected with an APP system by using Bluetooth, the APP system automatically calculates top parameters of each angular point position, and a field worker adjusts each angular point by using jacks 34, 35, 36 and 37 arranged at four angular points of the cable saddle bottom plate 1 according to the top parameters of each angular point until the four angular points are adjusted to be within a design requirement range; checking whether the cross line position meets the design requirement after the adjustment of each angular point is finished, if the cross line position does not meet the repeated step E, reinforcing the cable saddle bottom plate 1 if the cross line position meets the requirement, and taking out the jacks arranged at each part after the reinforcement is finished;
after the cable saddle bottom plate 1 is positioned, embedding the foundation bolts 2 into cable saddle buttress piers 14;
F. installing a scattered cable saddle base:
hoisting the cable saddle base 6 in place by using a hoisting tool 8 arranged on the cable saddle gantry 7 on site, then installing the cable saddle base 6 according to foundation bolts 2 pre-embedded in the cable saddle buttress and bolt holes on the cable saddle base 6, and removing the hoisting tool 8 after the cable saddle base 6 is installed;
G. adjusting the axis of the saddle body of the cable saddle;
the method comprises the steps that a hanger 8 installed on a cable saddle gantry 7 is utilized on site, a cable saddle body 9 is hoisted in place and connected with a cable saddle 6 through a pin shaft, reflection sheets 10 are attached to IP point positions on two sides of the cable saddle body 9, an APP system is connected with a total station 4 through Bluetooth, the reflection sheets 10 at the IP point position on one side of actual measurement transmit actual measurement coordinates measured by the total station 4 to the APP system in real time through Bluetooth, the APP system automatically calculates an included angle between an actual measurement plane 11 and a design plane 12, the cable saddle body 9 is adjusted through the hanger 8 until the cable saddle body 9 is adjusted to the design position, and then a cable saddle temporary support 13 is welded; after the scattered cable saddle temporary support 13 is welded, the total station 4 is moved to the other side of the scattered cable saddle body 9, the reflector plate 10 at the IP point position on the other side of the scattered cable saddle body 9 is actually measured, the included angle between the actually measured plane 11 and the design plane 12 is rechecked, if the included angle between the actually measured plane 11 and the design plane 12 meets the design requirement, the scattered cable saddle is positioned and completed, and if the included angle is not met, the scattered cable saddle needs to be readjusted.
The angle measurement precision of the total station 4 in the steps E and G is not less than 0.5', and the distance measurement precision is not less than 1mm +1.5 × 10-6D。
The lifting capacity of the jacks 31, 32, 33, 34, 35, 36 and 37 in the step E is 5t, the lifting height is 130mm, and the jacks 31, 32, 33, 34, 35, 36 and 37 are light, firm, flexible and reliable in structure and can be carried and operated by one person.

Claims (3)

1. A scattered cable saddle accurate positioning method based on an APP system is characterized by comprising the following steps: the method comprises the following specific steps:
A. calculating the coordinate of the designing cross line of the bottom plate of the scattered cable saddle:
calculating the coordinates of the design cross line of the cable saddle bottom plate according to a coordinate forward calculation formula and the spatial position relation of the cable saddle bottom plate; establishing a scattered cable saddle 1 by using CAD: 1, a model, namely, displaying the calculated coordinates into a CAD (computer-aided design) drawing in a point-spread mode, and rechecking the coordinates of a cross line designed on a base plate of the saddle;
B. determining a cable saddle bottom plate positioning method:
the coordinates of a cross line are designed on the scattered cable saddle bottom plate by actual measurement on site, because the intersection point position of the central line of the main cable in the scattered cable saddle and the connecting line of the center of the scattered cable saddle bottom plate are necessarily perpendicular to the plane of the scattered cable saddle bottom plate, a straight line is established by the intersection point position of the central line of the main cable in the scattered cable saddle and the center of the designed scattered cable saddle bottom plate, the distance from the intersection point of the intersection point position of the measured cross line point on the central line of the main cable in the scattered cable saddle and the distance from a foot on the connecting line of the center of the designed scattered cable saddle bottom plate to the intersection point of the central line of the main cable in the scattered cable saddle are calculated through the actual measurement of the cross line point, the distances from the measured cross line point to the corresponding designed longitudinal axis and transverse axis of the scattered cable saddle bottom plate are calculated, and the position of the scattered cable saddle bottom plate is adjusted through the distance from the measured cross line point to the designed longitudinal axis and transverse axis of the corresponding scattered cable saddle bottom plate;
C. determining an adjustment method of the axis angle of the saddle body of the cable rope:
designing an intersection point of central lines of main cables in the scattered cable saddle and coordinates at two ends of a pin shaft by using the scattered cable saddle to establish a design plane, establishing an actually measured plane by using the actually measured intersection point of the central lines of the main cables in the scattered cable saddle and the coordinates at two ends of the pin shaft, respectively calculating normal vectors of the design plane and the actually measured plane, calculating an included angle between the actually measured plane and the design plane, and adjusting a saddle body of the scattered cable saddle through the included angle between the actually measured plane and the design plane;
D. APP system preparation and debugging:
an APP system which can be connected with the total station through Bluetooth and automatically calculates the adjustment factors of the axial line angle of the cable saddle bottom plate and the cable saddle body is compiled by using the calculation mode determined in the step A, B, C, and the APP system is debugged by using the coordinates of any point in the CAD three-dimensional graph after the APP system is compiled;
E. the cable saddle bottom plate is accurately positioned:
firstly, respectively arranging a jack below four corner points of a scattered cable saddle bottom plate, respectively arranging a jack below the lower part of the scattered cable saddle bottom plate and below cross line points on the left side and the right side, connecting an APP system with a total station through Bluetooth, starting an automatic collimation function of the total station, vertically arranging a Leica small prism at each cross line point of the scattered cable saddle bottom plate, measuring the coordinates of the Leica small prism by using the total station, transmitting the measured coordinates measured by the total station into the APP system in real time through the Bluetooth, automatically calculating an adjustment parameter of an actual measurement point by the APP system, and adjusting the cross line position of the scattered cable saddle bottom plate by a field worker through the jacks arranged below the scattered cable saddle bottom plate according to the adjustment parameter; after the adjustment of the cross line position of the cable saddle bottom plate is completed, the coordinates of each angular point of the cable saddle bottom plate are actually measured by using the prism-free function of a total station, the total station is connected with an APP system by using the Bluetooth, the APP system automatically calculates the top parameters of each angular point position, and the angular points are adjusted by using a jack arranged below four angular points of the cable saddle bottom plate on site according to the top parameters of each angular point until the adjustment of the four angular points is within the design requirement range; checking whether the cross line position meets the design requirements after the adjustment of each angular point is finished, if the cross line position does not meet the repeated step E, reinforcing the cable saddle bottom plate if the cross line position meets the requirements, and taking out the jacks at each point position after the reinforcement is finished;
after the cable saddle bottom plate is positioned, embedding anchor bolts into the cable saddle buttress;
F. installing a cable saddle base:
hoisting the cable saddle base in place by using a hoisting tool arranged on a cable saddle portal frame on site, then installing the cable saddle base according to foundation bolts embedded in a cable saddle buttress and bolt holes on the cable saddle base, and removing the hoisting tool after the cable saddle base is installed;
G. adjusting the axis of the saddle body of the cable saddle;
the method comprises the following steps that a sling installed on a cable saddle portal frame is utilized on site, a cable saddle body is hoisted in place and connected with a cable saddle through a pin shaft, reflection sheets are attached to IP point positions on two sides of the cable saddle body, an APP system is connected with a total station through Bluetooth, the reflection sheet at the IP point position on one side is measured in real time, measured coordinates measured by the total station are transmitted to the APP system in real time through the Bluetooth, the APP system automatically calculates an included angle between an actually measured plane and a design plane, the cable saddle body is adjusted through the sling until the cable saddle body is adjusted to the design position, and then the cable saddle is welded to support temporarily; after the scattered cable saddle supports the welding and accomplishes temporarily, move the total powerstation to the opposite side of scattered cable saddle body, the reflector plate of actual measurement scattered cable saddle body opposite side IP point position carries out recheck to the contained angle between actual measurement plane and the design plane, if the contained angle between actual measurement plane and the design plane satisfies the design requirement, then scattered cable saddle location is accomplished, if unsatisfied, then need readjust.
2. The APP system-based splay saddle accurate positioning method according to claim 1, characterized in that: the total station in the steps E and G has the angle measurement precision not lower than 0.5' and the distance measurement precision not lower than 1mm +1.5 multiplied by 10-6D。
3. The APP system-based splay saddle accurate positioning method according to claim 1, characterized in that: and E, the lifting weight of the jack in the step E is 5t, and the lifting height is 130 mm.
CN202011170346.8A 2020-10-28 2020-10-28 Suspension bridge cable saddle accurate positioning method based on APP system Active CN112525170B (en)

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Publication number Priority date Publication date Assignee Title
CN114812526A (en) * 2022-04-29 2022-07-29 中船广西船舶及海洋工程有限公司 Method for measuring saddle of large-sized liquid tank of inclined slipway

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Publication number Priority date Publication date Assignee Title
US20160177993A1 (en) * 2014-12-19 2016-06-23 Impulse Nc Llc Cantilever assembly
JP2016141177A (en) * 2015-01-30 2016-08-08 日本ケーブル株式会社 Stay saddle of ropeway
CN207244452U (en) * 2017-03-31 2018-04-17 中交二公局第二工程有限公司 A kind of suspension bridge vice saddle adjusting apparatus in place
CN109271733A (en) * 2018-10-09 2019-01-25 东南大学 A kind of suspension bridge sky cable installs linear and cable saddle initial makeup location determination method
CN110345890A (en) * 2019-06-24 2019-10-18 中铁大桥勘测设计院集团有限公司 A kind of bridge completion state dissipate saddle's position and anchor span it is linear combine the method for determination
CN111021253A (en) * 2019-12-16 2020-04-17 中铁大桥局集团第五工程有限公司 Construction method for automatically positioning tunnel anchor anchoring system based on APP system and total station

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160177993A1 (en) * 2014-12-19 2016-06-23 Impulse Nc Llc Cantilever assembly
JP2016141177A (en) * 2015-01-30 2016-08-08 日本ケーブル株式会社 Stay saddle of ropeway
CN207244452U (en) * 2017-03-31 2018-04-17 中交二公局第二工程有限公司 A kind of suspension bridge vice saddle adjusting apparatus in place
CN109271733A (en) * 2018-10-09 2019-01-25 东南大学 A kind of suspension bridge sky cable installs linear and cable saddle initial makeup location determination method
CN110345890A (en) * 2019-06-24 2019-10-18 中铁大桥勘测设计院集团有限公司 A kind of bridge completion state dissipate saddle's position and anchor span it is linear combine the method for determination
CN111021253A (en) * 2019-12-16 2020-04-17 中铁大桥局集团第五工程有限公司 Construction method for automatically positioning tunnel anchor anchoring system based on APP system and total station

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