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Constructing method for crossing canyon or riverway by tensioning cables through utilizing hydrogen balloons

A construction method, hydrogen balloon technology, applied in the erection/assembly of bridges, bridges, buildings, etc., can solve problems such as spanning

Inactive Publication Date: 2012-06-13
THE FIRST ENG CO LTD OF CHINA RAILWAY NO 12 BUREAU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of spanning the main cable of a light suspension bridge or spanning cables in other fields, and provides a construction method for pulling cables across canyons or rivers by hydrogen balloons

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The hydrogen balloon traction cable crosses the canyon or river course construction method, comprises the following steps:

[0013] (1) Preparatory work: After the construction of the main towers on both sides is completed, the main cable on one side will be anchored through the ground anchor, and the hoist will be installed at the rear end of the ground anchor on the other side;

[0014] (2) Secondary traction wire rope crossing: choose a period when the weather is fine and the wind direction is not along the river, and in the relatively wide valley area upstream, fix the φ6 secondary traction wire rope on the first hydrogen balloon (for the convenience of retrieval, the front end is reserved for drooping Length), the buoyancy of the hydrogen balloon drives the steel wire rope up, and when the ascent limit is reached, a second hydrogen balloon is installed, and the steel wire rope continues to rise. In this way, the steel wire rope rises through the hydrogen balloon and...

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PUM

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Abstract

The invention discloses a construction method for crossing a canyon or riverway by tensioning cables through utilizing hydrogen balloons, belonging to the technical field of bridge construction and solving the crossing problem of a main cable of a light suspension bridge. The construction method comprises the following steps of: (1) after completion of a main tower, anchoring a main cable at one side, and installing a winch at the rear end of an earth anchor at the other side; (2) fixing a secondary hauling cable on a hydrogen balloon and rising, installing another hydrogen balloon after the first hydrogen balloon raises to the limit, repeating the steps, synchronously hauling two sides the secondary hauling cable to a bridge position after crossing, and fixing the secondary hauling cable on the main tower; (3) connecting the main hauling cable and the secondary hauling cable, fixing the secondary hauling cable on the winch and hauling the main hauling cable for crossing; (4) connecting the movable end of the main cable and the main hauling cable, and then hauling to the other side of the river; and (5) after the main cable crosses, constructing the earth anchor, and installing the main cable. The invention provides the step-by-step hauling construction method, which is rapid and convenient, economic and reasonable, safe and reliable and solves the problem of cable crossing construction in canyons or wide river reaches with rapider current.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and relates to a construction method for a main cable crossing a canyon or a river in the construction of a light suspension bridge, in particular to a construction method for a hydrogen balloon pulling a cable across a canyon or a river. Background technique [0002] In order to facilitate the construction and passage of people in canyons or wide rivers, it is necessary to set up light suspension bridges with large spans. The construction of suspension bridges must consider the issue of main cable spanning. In the past, the construction method of manual direct traction or ship spanning was commonly used. However, the common main cable crossing method is often not applicable in deep valleys or rivers that cannot pass ships. In view of this situation, it is necessary to study a fast, convenient, economical and reasonable, safe and reliable main cable spanning construction method. Co...

Claims

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Application Information

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IPC IPC(8): E01D21/00
Inventor 张传刚张国红周仲猛王传明
Owner THE FIRST ENG CO LTD OF CHINA RAILWAY NO 12 BUREAU GRP