SUPER-LONG PREFABRICATED LARGE-DIAMETER PIPE PILE, MANUFACTURING METHOD THEREFOR AND USE THEREOF

WIPO Patent Application WO/2024/113303

A1

A super-long prefabricated large-diameter pipe pile, a manufacturing method therefor and a use thereof, relating to the technical field of concrete steel pipe piles. The super-long prefabricated large-diameter pipe pile comprises the following raw materials: a pipe segment raw material, comprising C70 concrete of stiff consistency and a steel reinforcement cage, wherein the C70 concrete of stiff consistency comprises water, cement, sand, aggregate, and an admixture; and a grouting material for pipe segment assembly, comprising cement, an admixture, an expanding agent, and water, wherein the grouting material is an M50 grouting material. C60-grade concrete and an M40 grouting material which are originally used are respectively upgraded to the C70-grade concrete and the M50 grouting material, thereby improving the comprehensive performance such as the hammering resistance of the prefabricated large-diameter pipe pile and the bending resistance of the large-diameter pipe pile.

PAN GENQIANG (CN)
LIN DONG (CN)
GAO JIHONG (CN)
ZHANG YINBING (CN)
WANG YU AN (CN)
GAO HONGYAN (CN)
HUANG YANHUI (CN)

PCT/CN2022/135829

June 06, 2024

December 01, 2022

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CCCC THIRD HARBOR ENG CO LTD (CN)
NINGBO BRANCH CCCC THIRD HARBOR ENG CO LTD (CN)

E02D5/24; B28B21/30; C04B14/06

CN112776166A	2021-05-11
CN101348346A	2009-01-21
CN111364352A	2020-07-03
CN104153361A	2014-11-19
JP2005288835A	2005-10-20
US20210040703A1	2021-02-11

SHANGHAI XINCHUANG PATENT AND TRADEMARK OFFICE (GENERAL PARTNERSHIP) (CN)

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