Reinforcing method for additionally arranging new arch ring under main arch ring of old stone arch bridge

Abstract

The invention provides a reinforcing method for additionally arranging a new arch ring under the main arch ring of an old stone arch bridge. The arch ring is newly arranged under the bridge, the bearing capacity of the bridge is improved, and the use safety of the structure is ensured. The construction process is simple, construction is convenient, and the reinforcing effect is good. The influenceon clearance under the bridge is reduced; a riverway under the bridge is trimmed; the riverbed is paved, the arch ring is newly arranged below the old stone arch bridge; compared with demolition andreconstruction, the reinforcing method has the advantages that the engineering scale is effectively reduced, the construction speed is high, the construction work amount and difficulty are reduced andthe cost is saved, constructors are reduced, the influence on the old structure is reduced, the special appearance of the stone arch bridge is retained; little impact is generated on the bridge traffic; trepanning device can meet trepanning work of old arch rings or foundation side walls with different heights and radians, the stability of the whole trepanning device during trepanning is improvedthrough cooperation and adsorption of negative pressure suction cups, trepanning work is completed twice at the same time, and meanwhile adjustment of the trepanning distance is facilitated.

Description

technical field [0001] The invention relates to the technical field of stone arch bridge construction, in particular to a reinforcement method for adding a new arch ring under the main arch ring of an old stone arch bridge. Background technique [0002] Stone arch bridges have the advantages of beautiful shape, convenient materials, low cost and maintenance costs, and simple construction. In the 1960s and 1970s, a large number of stone arch bridges were built in my country. With the increase of the service life and the increase of transportation demand, the number of overloaded and oversized vehicles increases, and the stone arch bridge diseases continue to increase, which makes the bearing capacity of the stone arch bridge insufficient and cannot continue to meet the traffic requirements. [0003] In response to the above situation, there are currently two main solutions, one is demolition and reconstruction, and the other is reinforcement and reconstruction. If it is demo...

AI Technical Summary

Problems solved by technology

If it is demolished and rebuilt, the amount of work will be large, and the traffic will be affected. The cost of the project will be high, and it will also destroy the historical and cultural witnesses.

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