Reinforcing method for transforming main arch rib of double-curved arch bridge into slab arch

Abstract

The invention discloses a reinforcement method for transforming the main arch rib of a double-curved arch bridge into a slab arch, which comprises the following steps: Step 1, collecting the mechanical properties of the foundation soil layer by means of underwater foundation inspection, on-site excavation and dynamic sounding, Then detect the quality of the soil, evaluate the bearing capacity of the foundation soil, restore and check the parameters of the foundation structure, and summarize the data to review the bearing capacity of the foundation structure of the double-curved arch bridge; step 2, when the bearing capacity of the foundation structure of the double-curved arch bridge meets the requirements after the transformation , under the main arch rib, hang the construction platform of the suspension system through the steel wire rope; step 3, plant bars on the main arch rib and arch wave of the double-curved arch bridge, then bind the steel bars, install the base form, pour concrete, and wait for the health and other strength to reach the design After strengthening the formwork, the main arch rib of the double-curved arch bridge is transformed into a slab arch; the above method can significantly improve the structural bearing capacity and integrity of the double-curved arch bridge, while retaining the characteristic building of the double-curved arch bridge to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of bridge reconstruction and reinforcement, in particular to a reinforcement method for transforming the main arch rib of a double-curved arch bridge into a slab arch. Background technique [0002] As a unique bridge type in our country, the double-curved arch bridge is the crystallization of the wisdom of the working people in our country. It has obvious advantages such as saving material consumption, simple construction process, and low construction cost. It is suitable for the economic conditions and technical level of our country at that time. It has been widely used and spread all over the country in a short period of time. In the mid-1960s, at the beginning of the construction of the double-curved arch bridge, my country’s economy was still relatively backward, and the traffic volume was relatively small. Due to a series of factors such as the poor integrity of the structure itself, insufficient horizo...

AI Technical Summary

Problems solved by technology

[0005] The above reinforcement methods can improve the bearing capacity, stiffness, stability and crack resistance of the main arch ring, and the reinforcement effect is more obvious. The reinforcement method of cast-in-place reinforced concrete at the upper edge of the back needs to interrupt the traffic; the lower edge of the main arch ring is reinforced with a reinforced concrete bottom plate, which can adjust the position of the neutral axis and greatly improve the strength and integrity of the main arch ring, but the construction technology requires high requirements. Construction is more complicated

Images