A rapid repair method for reinforced concrete bridge piers after earthquakes
A reinforced concrete and repair method technology, applied in bridge maintenance, bridge, bridge construction and other directions, can solve the problems of not meeting the requirements of rapid traffic lifeline after earthquakes, reinforced concrete piers being easily damaged, and affecting the development of emergency rescue work, etc. Achieve good self-reset ability, increase durability and reduce residual deformation
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[0033] As shown in the figure, a rapid repair method for reinforced concrete bridge piers after earthquakes mainly consists of cap 1, bridge piers 2, high-fluidity early-strength cement mortar 3, stainless steel casing 4, energy-dissipating angle steel 5, SMA combined ring spring 6, The horizontal screw rod 7-1, the vertical screw rod 7-2, the high-strength bolt 8, the longitudinal reinforcement 9, and the polytetrafluoroethylene film 10 are composed.
[0034] The SMA combined ring spring 6 is composed of an SMA outer ring 12 and an inner ring which are engaged with each other. The SMA outer ring 12 is made of nickel-titanium alloy, and the inner ring is made of high-strength steel with a yield strength of 500-1000 MPa. Both the SMA outer ring 12 and the inner ring are annular, and are used alternately from top to bottom. The inner ring surface of the SMA outer ring 12 is in contact with the outer ring surface of the inner ring and fastened with each other, and the inner ring...
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