Positioning adjustment device and method of main tower cable guiding pipe of cable-stayed bridge

Abstract

The invention discloses a positioning adjustment device and method of a main tower cable guiding pipe of a cable-stayed bridge. The positioning adjustment device comprises a stiff skeleton, a measuring assembly and a standard assembly; the stiff skeleton is internally provided with an anchoring area used for anchoring the cable guiding pipe, and a datum point is preset on the stiff skeleton; the measuring assembly is used for adjusting an inlet and an outlet of the cable guiding pipe into a preset elevation surface according to the relationship between coordinates of the datum point and preset coordinates of the inlet and the outlet of the cable guiding pipe, and the relative position relationship between the datum point and the inlet and the outlet of the cable guiding pipe; the standard assembly comprises two telescopic rods, one ends of the telescopic rods are rotatably connected to the stiff skeleton, and the other ends of the telescopic rods are provided with standard points; and the standard assembly is used for adjusting the two standard points to enable the connecting line of the two standard points to coincide with or to be parallel to the theoretical axis according to the relationship between the coordinates of the datum point and the preset coordinates of the inlet and the outlet of the cable guiding pipe, and the relative position relationship between the datum point and the standard points. The cable guiding pipe can be quickly and precisely adjusted to the theoretical position even under heavy fog and strong wind weather.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a positioning adjustment device and an adjustment method for a main tower cable guide of a cable-stayed bridge. Background technique [0002] With the large-scale construction of highway and railway transportation network in our country, the construction of long-span cable-stayed bridges appears more and more frequently. The cable-stayed cable is the main load-bearing material that directly transfers the weight of the main girder and deck of the cable-stayed bridge to the tower. The precision requirement is very high. [0003] The pre-embedded positioning of the main tower cable guide of the existing cable-stayed bridge is generally adjusted by the total station. The total station is erected on the land, and the three-dimensional coordinates of the cable guide can be quickly realized by measuring the prism placed at the main tower cable guide For measurement, compar...

AI Technical Summary

Problems solved by technology

However, when the visibility is low due to foggy weather, the total station cannot detect the prism, and the total station cannot be leveled for measurement due to strong winds, and the construction of the main tower cable conduit cannot be stopped on site. , it is impossible to quickly and accurately adjust the cable guide to the theoretical position

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