T-section steel pipe recycled concrete pier body

Abstract

The invention discloses a T-sectional recycled concrete filled tubular pier. A main steel tube is arranged at a corner of a T-shaped pier body. Each auxiliary steel tube is composed of double steel plates, which are welded to the main steel tube to form three limbs for the T-shaped pier body; the auxiliary steel tubes are arranged at the ends of the limbs; shear-resistant studs are welded in the steel tubes and cells enclosed by the steel tubes and the steel plates, and steel fiber micro-expanded recycled concrete is poured into the steel tubes and the cells; mechanical behavior of the T-shaped pier body is improved, torsion resistance thereof is improved, the recycled concrete restrained by the steel tubes is higher in bearing capacity and shock resistance, fewer doubts are thrown upon the performance of the recycled concrete, the popularization and application of the recycled concrete in bridge engineering and recycling of building wastes are favored, and waste is turned into wealth. The T-sectional recycled concrete filled tubular pier is applicable to bridge engineering, especially to ramp bridges, to areas experiencing intensive quakes and to demolition and rebuilding or rebuilding of old bridges; the applicable range of the recycled concrete is widened.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a recycled concrete pier body of a T-shaped cross-section steel pipe. Background technique [0002] Recycled concrete refers to the waste concrete blocks that are crushed, cleaned, and graded, mixed with gradation in a certain proportion, partially or completely replaced by natural aggregates such as sand and gravel (mainly coarse aggregates), and then added with cement, water, etc. new concrete. Recycled concrete can have the following situations according to the combination of aggregates: all aggregates are recycled aggregates; coarse aggregates are recycled aggregates, fine aggregates are natural sand; coarse aggregates are natural gravel or pebbles, fine aggregates The raw materials are recycled aggregates; recycled aggregates replace part of the coarse or fine aggregates. However, due to the influence of the old mortar attached to the recycled aggreg...

AI Technical Summary

Problems solved by technology

However, most of the construction waste is transported to the suburbs or around the city for simple landfill or open storage without any treatment, which not only wastes land and resources, but also pollutes the environment; on the other hand, with the growing population, construction The industry's demand for sand and gravel aggregates continues to increase

For a long time, because sand and gravel aggregates are widely available and cheap, they are considered inexhaustible raw materials and have been exploited at will, resulting in resource depletion, landslides, riverbed diversions, and serious damage to nature. surroundings

Images