A method for installation and positioning of main tower cableway pipe of cable-stayed bridge
A technology for installation and positioning and cableway pipes, which is applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as complicated procedures, time-consuming, and influence on cable-stayed installation, and achieve the effect of ensuring and improving positioning accuracy
Active Publication Date: 2016-06-08
CCCC THIRD HIGHWAY ENG
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Problems solved by technology
With this positioning method, not only is the process complicated and time-consuming, but also the processing error of the cableway tube is accumulated into the positioning error, which affects the installation of the stay cable
Method used
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0020] Such as figure 1 As shown, the present invention provides a method for installing and positioning the main tower cableway pipe of a cable-stayed bridge, comprising the following steps:
[0021] Step 1, stake out the spatial position of the cableway pipe on the rigid frame according to the theoretically calculated three-dimensional coordinates, and bury a prism lens at each spatial position of the cableway pipe to measure the spatial position of each cableway pipe;
[0022] Step 2. In the first stage, measure and statistically calculate the first set of three-dimensional coordinates of each cableway tube space position in the state of no sunlight and different set temperatures, and measure and statistically calculate the spatial position of each cableway tube in the sec...
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The invention discloses an installing and positioning method of a main tower ropeway pipe of a cable-stayed bridge. The installing and positioning method comprises the steps of laying off a spatial position of a ropeway pipe on a stiffness framework according to three-dimensional coordinates which are obtained according to theory calculation, using the three-dimensional coordinates which are obtained according the theory calculation and three-dimensional coordinates of the ropeway pipe under different environments as references, calculating deformation of the ropeway pipe under the different environments, correcting the spatial position of the ropeway pipe, installing the ropeway pipe in a corrected spatial position of the ropeway pipe, and primarily positioning and accurately positioning the ropeway pipe. According to the installing and positioning method of the main tower ropeway pipe of the cable-stayed bridge, disclosed by the invention, the positioning accuracy of the ropeway pipe is increased, the spatial position of the ropeway pipe is monitored when the ropeway pipe is installed, the deformation of the spatial position of the ropeway pipe is calculated, the ropeway pipe is adjusted in time, and the positioning accuracy after the ropeway pipe is installed is ensured.
Description
technical field [0001] The invention relates to a method for installing and positioning a main tower cableway pipe of a cable-stayed bridge. Background technique [0002] The positioning of cableway pipes of cable-stayed bridges is a task that requires high measurement accuracy and is extremely difficult in the construction of high tower columns of cable-stayed bridges. Whether the installation position of the cableway pipe anchor point is correct will directly affect the change of the internal force of the statically indeterminate structural nodes of the cable-stayed bridge. In addition, the position of the cableway pipe exit point is also critical. If the position deviation of the tower exit point is too large, it will cause inclination. The anti-vibration ring of the stay cable cannot be installed, thereby affecting the normal use of the stay cable. During construction of existing cable-stayed bridges, the measurement and positioning method of the cableway pipe is, accor...
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IPC IPC(8): E01D21/00
Inventor 周国金段洪岩范亮亮叶冉辉
Owner CCCC THIRD HIGHWAY ENG