UHPC hollow column pier and construction method thereof

Abstract

The invention discloses a UHPC hollow column pier which comprises a first column pier body, a second column pier body and a tie beam piece connected between the first column pier body and the second column pier body; the first column pier body and the second column pier body each comprise a first UHPC layer, a second structure layer and a third UHPC layer which are arranged from inside to outside,and the second structure layer comprises a plurality of stirrups and a plurality of longitudinal bars; the stirrups and the longitudinal bars are fixedly connected with each other to form a second structural layer; a hollow channel is reserved in the center of the first UHPC layer, and the tie beam piece is connected to the middle of the first column pier body and the middle of the second columnpier body to form an I-shaped double-column-pier structure. The invention aims to reduce pier materials in large-scale bridge engineering on the premise of meeting the construction requirements of earthquake resistance, strength, shearing resistance and bending resistance by using a new column pier structure. The invention further discloses a construction method of the UHPC hollow column pier, andthe construction method is used for guiding construction and manufacturing of the UHPC hollow column pier and improving the manufacturing efficiency and the success rate.

Description

technical field [0001] The invention relates to the technical field of column pier design and manufacture, in particular to a UHPC hollow column pier and a construction method thereof. Background technique [0002] With the migration of the economic development center to the central and western regions, the country vigorously builds the transportation infrastructure in the central and western regions. Unlike the northern plains and southern hills, the terrain in the central and western regions is complex, with many mountains and basins. The traditional way of opening mountains and building roads has greatly damaged Due to the local ecological environment, the demand for viaducts and construction technology have developed rapidly. [0003] In large-scale bridge projects, most of the pier sections are hollow sections, because the solid pier needs to use a large amount of concrete and steel bars. The huge section makes it difficult to vibrate and construct the concrete, and the...

AI Technical Summary

Problems solved by technology

[0007] Patent No. CN201921218805.8 discloses a utility model for the connection structure of semi-prefabricated UHPC shell superimposed cover beams and prefabricated pier columns. The design of the post-pouring channel of the pier column integrates the prefabricated pier column and the semi-prefabricated UHPC cap beam shell through concrete pouring to avoid water seepage problems, and uses replaceable energy-dissipating angle steel to improve lateral force resistance, lateral stiffness, and energy dissipation capacity , improve the overall mechanical performance of the utility model, reduce the installation difficulty of the pier column, and improve the overall shape of the column pier; There is no advantage, and there is no solution to the above problems

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