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Title:
METHOD FOR DETERMINING SAFETY OF MINIATURE CAST-IN-PLACE PILE SUPPORT IN ARTIFICIALLY DUG WELL
Document Type and Number:
WIPO Patent Application WO/2020/253887
Kind Code:
A1
Abstract:
The present invention relates to a method for determining the safety of miniature cast-in-place pile support in an artificially dug well, belonging to the field of bridge and building construction. By means of determining a construction length L of a miniature cast-in-place pile and a construction angle θ between the pile and a vertical line, the construction length and the construction angle, the depth z0 of the bottom of an artificially dug well, the saturated unit weight γ sat of soil to the side of the pile, the cohesive force c and the internal friction angle φ of the soil to the side of the pile, the active earth pressure strength σ a0 at the bottom of the artificially dug well and the active earth pressure strength σ a1 at a position corresponding to half the depth in the downward range of the pile body, the resulting force Ea of active earth pressures on the side of the cast-in-place pile away from the well, the maximum shearing stress τ max at the point of greatest risk on the pile, the maximum bending moment Mmax of the point of greatest risk on the pile, the maximum tensile stress due to the bending moment σ max of the point of greatest risk on the pile, and performing safety determination on the described results, it is determined whether the pile is in a safe state, ensuring that construction may be safely conducted.

Inventors:
GAO YAN (CN)
HE CHANGJIANG (CN)
MENG QINGYI (CN)
SUN LEI (CN)
QIAN KUN (CN)
YIN ZITAO (CN)
JIAO YONGYAN (CN)
LI DEZHU (CN)
SUN TIANZUO (CN)
SUN TIANYOU (CN)
LI MINGZHE (CN)
Application Number:
PCT/CN2020/103620
Publication Date:
December 24, 2020
Filing Date:
July 22, 2020
Export Citation:
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Assignee:
CHINA RAILWAY NO 9 GROUP CO LTD (CN)
International Classes:
E02D17/08; E02D1/08
Foreign References:
CN110924403A2020-03-27
CN101226170A2008-07-23
CN110397040A2019-11-01
JP6590101B12019-10-16
Other References:
QIN, SHILUN ET AL.: "Non-official translation: Mechanics of Materials", NON-OFFICIAL TRANSLATION: SICHUAN UNIVERSITY PRESS, 31 August 2008 (2008-08-31), DOI: 20201014104844X
Attorney, Agent or Firm:
BEIJING WUZHOUYANGHE & PARTNERS (CN)
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