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Method for evaluating horizontal thrust of widening roadbed acting on existing gentle slope embankment

A technology of horizontal thrust and embankment, which is applied in the field of geotechnical engineering, can solve problems such as the evaluation method of horizontal thrust without mentioning the width of the embankment, and achieve the effects of significant environmental benefits, easy determination of parameters, and clear evaluation process

Pending Publication Date: 2022-07-26
雷洋
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, none of the existing patents, papers and specifications mentions the evaluation method of the horizontal thrust of the widened roadbed acting on the existing embankment

Method used

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  • Method for evaluating horizontal thrust of widening roadbed acting on existing gentle slope embankment
  • Method for evaluating horizontal thrust of widening roadbed acting on existing gentle slope embankment
  • Method for evaluating horizontal thrust of widening roadbed acting on existing gentle slope embankment

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Embodiment Construction

[0017] The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

[0018] refer to figure 1 , the present invention helps a wide roadbed to act on the horizontal thrust evaluation method of the existing gentle slope embankment, comprising the following steps:

[0019] ① Through the indoor geotechnical test, determine the friction angle δ between the existing embankment J side slope 1 and the width of the subgrade B, in rad; determine the internal friction angle of the filler of the subgrade B in the width of the embankment Unit rad; determine the width of the subgrade B filler weight γ, unit kN / m 3 ;

[0020] ② Determine the height H of the existing embankment J side slope 1 through on-site surveying and mapping, in m; determine the angle α between the existing embankment J side slope 1 and the horizontal plane, in rad;

[0021] ③ Determine the horizontal thrust E acting on the existing gentle slop...

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Abstract

The invention discloses a method for evaluating horizontal thrust of a widening roadbed acting on an existing gentle slope embankment, which provides key parameters for engineering design of the widening roadbed of the existing gentle slope embankment, and scientifically and reasonably evaluates train operation comfort and safety related to widening construction of the existing embankment. Comprising the following steps: (1) determining a friction angle between an existing embankment slope and a widening roadbed, an internal friction angle phi of widening roadbed filler and a weight gamma of the widening roadbed filler through an indoor soil test; (2) determining the height H of the existing embankment slope and the included angle alpha between the existing embankment slope and the horizontal plane through field surveying and mapping; (3) determining the horizontal thrust E of the widening roadbed acting on the existing gentle slope embankment according to the following formula;

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a horizontal thrust evaluation method for widening a roadbed to act on an existing gentle slope embankment. [0002] technical background [0003] In recent years, with the rapid development of rail transit, new (structure) buildings and existing buildings (structures) are inevitably affected by crossover, and the relationship between the two includes close proximity, upper span, and lower penetration. Under the additional load of new (structure) buildings, existing buildings (structures) may suffer from uneven settlement, tilt instability, crushing and fracturing and other diseases, and even lead to major safety accidents. With the gradual formation of high-speed railways, the new railways are bound to be connected to the national trunk lines of eight vertical and eight horizontal lines. [0004] However, when a new railway is introduced into a main line ballast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/20E01C3/00E02D1/00E01B1/00
CPCG06F30/13G06F30/20E01C3/00E02D1/00E01B1/002
Inventor 雷洋张力言叶丹
Owner 雷洋
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