Title:
PILE EVALUATION METHOD
Document Type and Number:
Japanese Patent JP2021009071
Kind Code:
A
Abstract:
To provide a pile evaluation method capable of evaluating support performance of a pile simply and accurately.SOLUTION: A pile evaluation method comprises: acquiring an elastic wave propagation velocity based on the rise time difference of an actual impact elastic wave test from when hitting the head of a pile to generate a striking wave until the striking wave propagates as an elastic wave through the pile and a reflected wave reflected at the lower end of the pile propagates as an elastic wave to the head; determining whether or not the pile is longer than a predetermined reference value; when it is determined that the pile is longer than the reference value, reducing a measured value of the elastic wave propagation velocity of the pile to calculate a pile length; and when it is determined that the value is shorter than the reference value, calculating the pile length using the measured value of the elastic wave propagation velocity of the pile.SELECTED DRAWING: Figure 7
Inventors:
HOTTA HIROYUKI
KIRIYAMA TAKATOSHI
YAMATO YUKA
KIRIYAMA TAKATOSHI
YAMATO YUKA
Application Number:
JP2019122935A
Publication Date:
January 28, 2021
Filing Date:
July 01, 2019
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD
International Classes:
G01N29/07; E02D27/12; G01B17/00
Domestic Patent References:
| JP2017155479A | 2017-09-07 | |||
| JP2019032303A | 2019-02-28 |
Other References:
山本 辰徳、外２名: "衝撃載荷試験に用いる杭の縦波伝搬速度に関する検討", 地盤工学研究発表会発表講演集, vol. 第４３巻２号, JPN6023009732, 12 June 2008 (2008-06-12), JP, pages 1261 - 1262, ISSN: 0005013787
今田 和夫、外２名: "模型杭を用いたインテグリティ試験における地盤拘束の影響に関する研究", 土木学会論文集, vol. 第２０００巻第６５２号, JPN6023009733, 21 June 2000 (2000-06-21), JP, pages 91 - 102, ISSN: 0005013788
今田 和夫、外２名: "模型杭を用いたインテグリティ試験における地盤拘束の影響に関する研究", 土木学会論文集, vol. 第２０００巻第６５２号, JPN6023009733, 21 June 2000 (2000-06-21), JP, pages 91 - 102, ISSN: 0005013788
Attorney, Agent or Firm:
Takashi Koyama
Teiji Tanaka
Masataka Aiba
Teiji Tanaka
Masataka Aiba