Method for combining cable-stayed bridge deck cable unreeling manner and air cable unreeling manner under condition of limited space

Abstract

The invention discloses a method for combining a cable-stayed bridge deck cable unreeling manner and an air cable unreeling manner under the condition of a limited space. The method comprises the following steps: arranging a cable releasing tray under a cable tower, enabling a stay cable to be hoisted and placed on the cable releasing tray, and ensuring a beam-end anchor cup of the stay cable to be placed in a manner that one surface of the beam-end anchor cup faces upwards; pulling out the beam-end anchor cup and placing the pulled-out beam-end anchor cup on an anchor head cart, pulling the anchor head cart towards the front end of a main beam away from the direction of the cable tower for cable unreeling, and stopping pulling when the anchor head cart is pulled to the front end of the main beam; hoisting the reeled stay cable on the cable releasing tray, turning over the hoisted stay cable in the air, and then placing the turned-over stay cable back to the cable releasing tray, so that the tower-end anchor cup of the stay cable is placed in a manner that one surface of the tower-end anchor cup faces upwards; and performing air cable unreeling construction, wherein during the air cable unreeling, the tower-end anchor cup of the stay cable is pulled to slowly move upwards in conjunction with the rotation of the cable releasing tray simultaneously until the remaining stay cables on the cable releasing tray are completely hoisted, and a stay cable unreeling process is completed. According to the cable unreeling method disclosed by the invention, a bridge deck cable unreeling manner and an air cable unreeling manner are combined, so that the problem that the deck cable unreeling space is not enough is solved, the situation that the cable body is scratched is avoided, and construction safety is guaranteed.

Description

technical field [0001] The invention is used in the technical field of bridge construction, and in particular relates to a cable spreading method combining a cable-stayed bridge deck with the air under the condition of limited space. Background technique [0002] With the large-scale construction of my country's traffic road network, the construction of long-span cable-stayed bridges appears frequently. In the cable-stayed bridge, the structural components that bear the tension and serve as the main support of the main girder, due to the construction of the two ends of the cable-stayed cables at high altitude or near the It is very difficult to construct because it is empty and near water, and requires advanced installation methods and techniques, so it is particularly important to ensure the safety of the construction process. [0003] The installation method of the long stay cable is to spread the cable on the bridge deck first (that is, to fully unfold the cable body on th...

AI Technical Summary

Problems solved by technology

[0015] In order to solve the above problems, the present invention provides a cable spreading method that combines the cable-stayed bridge deck with the air under the condition of limited space, which solves the problem of insufficient space for cable-stayed bridge decks with long and heavy cable-stayed cables, and minimizes the number of construction auxiliary machinery. The number of leases to reduce costs, simplify operating procedures, and ensure construction safety

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