Stone arch bridge main arch ring rib type cover arch reinforcing method

By locally increasing the cross-section of the main arch ring, reinforcing the inter-arch with the inner arch and the carbon fiber mesh, and combining this with the bridge deck renovation, the problems of high construction cost, high difficulty and insufficient durability in existing stone arch bridge reinforcement methods have been solved, achieving a low-cost and high-efficiency bridge reinforcement effect.

CN121654045APending Publication Date: 2026-03-13FUJIAN LUHAI ENG SURVEY & DESIGN CO LTD +1
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Patent Information

Application Number
CN202610124076.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-29
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Existing methods for reinforcing stone arch bridges result in increased self-weight, long construction periods, high costs, and significant implementation difficulties, failing to effectively improve the bridge's load-bearing capacity and durability.

Method used

A comprehensive reinforcement system is adopted, which combines local enlargement of the main arch foot section for reinforcement, reinforcement of the inter-arch and the inner arch, reinforcement of the carbon fiber mesh, and reconstruction of the bridge deck system. Through steps such as local enlargement of the main arch section for reinforcement, rebar connection, concrete pouring, carbon fiber mesh laying, and bridge deck reconstruction, an active reinforcement system is formed.

Benefits of technology

To reduce construction costs and implementation difficulties, improve the load-bearing capacity and durability of bridges, enhance structural safety and durability, and strengthen the bending stiffness and crack control capabilities of bridges.

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Abstract

The invention discloses a stone arch bridge main arch ring rib type cover arch reinforcing method, relates to the related field of stone arch bridge reinforcing and reconstruction, and aims at improving the bearing capacity of a bridge and enhancing the safety and durability of the bridge through a comprehensive reinforcing system combining main arch ring arch foot local increased section reinforcing, web arch cover arch reinforcing, carbon fiber grid reinforcing and bridge floor system reconstruction. The durability of the structure is improved. The reinforcing method comprises the following steps that S1, section increasing reinforcing treatment is conducted on the arch feet of the main arch ring locally; s2, a web arch close to the pier is reinforced by adopting a cover arch method; s3, other web arch rings are reinforced by adopting a carbon fiber grid hanging treatment method; s4, reinforcing the web arch ring of the bridge abutment by adopting a carbon fiber grid hanging treatment method; s5, the bridge deck pavement above the plane where the bottom face of the original guardrail outrigger is located is chiseled away; and S6, bridge deck pavement and rebuilding, bridge deck guardrail replacement and expansion joint addition.
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