Construction method for deep canyon arch aqueduct arch ring hoisting single base rib closure

Abstract

The invention discloses a construction method for deep canyon arch aqueduct arch ring hoisting single base rib closure. An arch box prefabricating yard is arranged along one side of a canyon bottom; double groups of fixed cable cranes are arranged on mountain bodies on two sides; juncture piers and pier tops are provided with steel structures to form combined buckling towers, suspension clasps areseparately arranged, and a bank slope back cable anchoring system is arranged; cross sections of arch boxes are wholly and longitudinally prefabricated in a multi-section way, a gantry crane transports arch box sections to the positions below main cables, double groups of cable cranes performs hoisting and installation after a rotation platform turns for about 900, and single base rib closure isachieved. By utilizing the double groups of fixed cable cranes arranged on the mountain bodies on two sides, the arch boxes rotate in the prefabricating yard in situ, the arch boxes are transversely and wholly not separated during prefabrication an are longitudinally prefabricated and hoisted in the multi-section way. Large-curve arch box rotating body fertility is not needed, and occupied area issaved. Transverse wind cables used in an arch box cantilever state are not needed, and construction interference is reduced. The boxes are not separated in the transverse direction, single base rib closure and aching are achieved, the working efficiency is greatly improved, and a construction period is shortened.

Description

technical field [0001] The invention relates to a construction method for an arch aqueduct arch ring, in particular to a construction method for an extra-large concrete arch aqueduct arch ring in a deep canyon. Background technique [0002] To build an arched aqueduct or an arch bridge in a canyon terrain, the traditional cantilever hoisting method of the arch ring is to set up two towers on the mountains on both sides of the canyon, and use the system of hoisting and buckling in one buckling tower, which is difficult to hoist; the arch box is divided into multiple boxes horizontally ( Separation) multi-base ribs are combined to form an arch, and wind cable stabilization measures must be installed during the hoisting process, resulting in large construction interference, more procedures, and complicated processes; The turning radius of the arch box with a larger curve occupies a larger area and the steering is relatively complicated. [0003] The Longchang aqueduct is a sup...

AI Technical Summary

Problems solved by technology

[0002] To build an arched aqueduct or an arch bridge in a canyon terrain, the traditional cantilever hoisting method of the arch ring is to set up two towers on the mountains on both sides of the canyon, and use the system of hoisting and buckling in one buckling tower, which is difficult to hoist; the arch box is divided into multiple boxes horizontally ( Separation) multi-base ribs are combined to form an arch, and wind cable stabilization measures must be installed during the hoisting process, resulting in large construction interference, more procedures, and complicated processes; The turning radius of the arch box with a large curve occupies a large area and the steering is relatively complicated

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