Semi-assembled composite bridge pier and construction method thereof

Abstract

The invention belongs to the field of bridge engineering, and particularly relates to a semi-assembled composite bridge pier and a construction method thereof. The semi-assembled composite bridge piercomprises a prefabricated bearing platform and a plurality of prefabricated bridge pier segments, wherein the contact surfaces between the prefabricated bridge pier segments are connected by adoptingultra-high performance mortar; the ultra-high performance mortar has better corrosion resistance than mortar used in a traditional prefabricated assembly bridge pier joint; and the ultra-high-performance concrete inside a hollow steel tube of the bridge pier penetrates the entire bridge pier structure, so that the composite bridge pier has relatively strong deformation ability, good ductility andstrong self-resetting ability, and the residual deformation of the bridge pier under the action of earthquake can be reduced. According to the technical scheme, the semi-assembled composite bridge pier is convenient and fast to construct and has relatively high construction degree of safety.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a semi-assembled composite bridge pier and a construction method thereof. Background technique [0002] With the vigorous development of bridge construction in our country, the construction environment of bridges has attracted more and more attention from all walks of life, especially bridges built in cities. Compared with traditional cast-in-place concrete bridges, segmental assembly piers have the advantages of shorter construction period, prefabricated components in the prefabrication yard, and less interference from the surrounding environment. Among them, the connection mode and connection quality between prefabricated and assembled pier segments directly affect the mechanical performance and seismic performance of the pier as a whole. Therefore, a reliable and simple segment connection method is the key to the application of prefabricated piers. The...

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Problems solved by technology

However, it uses cast-in-place UHPC joints to realize the connection of prefabricated pier segments. Although the connection structure and method of prefabricated assembled pier segments have enhanced the compressive and tensile properties of the joints of prefabricated pier segments, its The structure is complex, the construction period is long, and the stress-strain distribution at the connection is uneven, and the overall mechanical and seismic performance of the bridge piers are poor

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