Cable-stayed bridge cable beam anchorage zone technical condition monitoring windows and observation method

Abstract

The invention relates to cable-stayed bridge cable beam anchorage zone technical condition monitoring windows. According to the invention, cable sleeve pipes with observation ports are positioned in concrete structures; an enclosure frame is welded outside each cable sleeve pipe; the enclosure frame is fixedly connected to an upper cap through a plurality of studs, pressure strips, and a sealing rubber ring; a transparent monitoring window is adhered to a window on one end of the upper cap; and the other end is provided with a camera and is provided with a data line channel. Therefore, the monitoring windows are formed. The cable sleeve pipe monitoring windows are used for visually directly observing the technical conditions of the cable-stayed bridge steel cables. With the provided rubber sealing parts, exterior humid air and corrosive media are prevented from entering the cable sleeve pipes. The cameras are arranged in the cable sleeve pipes, and are connected to a computer through auxiliary devices, such that steel cable changes can be more clearly observed. With the monitoring window and the observation method, a technical status of the impossibility for observing cable concealed area is overcome. Also, data can be transmitted by using the monitoring device, such that technical detection basis is provided. The monitoring windows are ideal cable-stayed bridge cable beam anchorage zone technical condition monitoring windows.

Description

technical field [0001] The invention relates to a method for observing a cable-stayed bridge by using a monitoring window, in particular to a method for observing the technical condition of the anchorage area of ​​a cable-stayed bridge by using a monitoring window. Background technique [0002] With the development of my country's infrastructure, the number of bridges is increasing. According to statistics, the number of bridges built has exceeded 600,000, and more than 100 cable-stayed bridges of various types have been built, of which more than 50 have a span of more than 200 meters. The service life of the bridge pull / sling of the long-span cable support system is not as long as the life of the main structure of the bridge, generally only about 15-20 years. The sling needs to be replaced at least 4-5 times. For example, the Maracaibo Bridge in Venezuela, built in 1962, was found to be broken after 12 years of operation. In November 1980, the cables were replaced. It took...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem that the cables of cable-stayed bridges cannot be monitored at present, and provide a simple structure, low cost, which can not only manually observe the technical conditions of the hidden areas of the cables, but also provide data or images for transmission by monitoring equipment. The Method of Observing the Technical Status of the Cable-Girder Anchorage Area of ​​a Cable-Stayed Bridge Using the Monitoring Window

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