Calculation method of bridge pile steel sleeve construction additional force

A steel casing and additional force technology, applied in excavation, sheet pile wall, foundation structure engineering, etc., can solve the problems of access, neglect of section construction, etc., to achieve a wide range of applications, fast and convenient calculation, and simple and clear calculation methods Effect

Active Publication Date: 2021-07-27
ZHEJIANG UNIV CITY COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to propose a calculation method for the additional force of bridge pile steel casing construction, to solve the problem of ignoring the actual situation when calculating the additional force of steel casing construction in th

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  • Calculation method of bridge pile steel sleeve construction additional force
  • Calculation method of bridge pile steel sleeve construction additional force
  • Calculation method of bridge pile steel sleeve construction additional force

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Example Embodiment

[0065] The present invention will be further described below in connection with the examples and drawings. The following examples are implemented in terms of the technical solutions of the present invention, and the description of the embodiment is for help understanding the invention, and not to limit the invention. For those skilled in the art, there may be several improvements and modifications for the present invention without departing from the principles of the invention. These improvements and modifications have also fallen within the scope of the claims of the invention.

[0066] figure 1 It is a flow chart of a method for calculating a bridge steel casing construction, according to an exemplary embodiment. figure 1 The method can include the following steps:

[0067] Step S11, establish a calculation model for steel casing construction;

[0068] Step S12, according to the calculation model, calculate the pile end pressure P;

[0069] Step S13, calculate the side radial p...

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Abstract

The invention discloses a calculation method of bridge pile steel sleeve construction additional force, and relates to the technical field of underground engineering. The method comprises the following steps of building a calculation model of steel sleeve construction; calculating the pile end pressure p according to the calculation model; calculating the pile side radial pressure q according to the calculation model; calculating the pile side vertical frictional resistance f according to the calculation model; according to the pile end pressure p, introducing a soil plug height reduction coefficient zeta, and calculating corrected pile end pressure p'; and according to the pile side radial pressure q and the pile side vertical frictional resistance f, introducing four-section correction, and calculating the corrected pile side radial pressure q' and the corrected pile side vertical frictional resistance f'. According to the method, the problem that in the prior art, when the additional force of steel sleeve construction is calculated, the characteristics of steel sleeve sectional construction in actual engineering are neglected, and the influence of the strength of the soil squeezing effect within the steel sleeve construction depth range is ignored, so that the final result and the actual engineering have access to each other is solved.

Description

technical field [0001] The invention relates to the technical field of underground engineering, in particular to a calculation method for the additional force of bridge pile steel casing construction. Background technique [0002] Bored piles have the characteristics of fast construction speed, high bearing capacity, and wide application range, so they are widely used in large-diameter bridge pile projects. However, due to the diversity and complexity of its construction technology, quality control is prone to deviations, and construction and quality accidents of bored piles occur frequently. In particular, the construction of large-diameter bridge piles adjacent to the operating subway tunnel is likely to cause a large disturbance to the surrounding soil, which in turn causes excessive deformation of the tunnel. If effective engineering measures are not taken, the operation safety of the subway will be seriously threatened. The full-casing cast-in-situ pile is constructed ...

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Application Information

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IPC IPC(8): E02D33/00E02D31/10E02D17/08E02D5/38G06F30/20G06F119/14
CPCE02D33/00E02D31/10E02D17/08E02D5/38G06F30/20E02D2300/0029G06F2119/14Y02T90/00
Inventor 张霄丁智张默爆冯丛烈董毓庆
Owner ZHEJIANG UNIV CITY COLLEGE
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