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A Calculation Method for Passive Lateral Rock Pressure of Outwardly Dipping Bedding Jointed Rock Mass

A jointed rock mass and pressure technology, applied in calculation, design optimization/simulation, electrical digital data processing, etc.

Active Publication Date: 2019-05-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for passive lateral rock pressure, there is no clear regulation and explanation in "Technical Code for Building Slope Engineering" (GB 2013)

Method used

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  • A Calculation Method for Passive Lateral Rock Pressure of Outwardly Dipping Bedding Jointed Rock Mass
  • A Calculation Method for Passive Lateral Rock Pressure of Outwardly Dipping Bedding Jointed Rock Mass
  • A Calculation Method for Passive Lateral Rock Pressure of Outwardly Dipping Bedding Jointed Rock Mass

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Experimental program
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Embodiment

[0056] Embodiment: one, formulate the calculation parameters of the externally inclined bedding joint rock mass, such as Image 6 As shown, the height of the vertical surface of the jointed rock slope that needs to be supported is 10m, there is a group of bedding joints, the inclination angle of the joints is 40 degrees, the distance between the joint surfaces is 1m, the cohesion of the joint surfaces is 50kPa, and the friction of the joint surfaces The angle is 25°, the cohesion of the complete rock material is 1.5MPa, the friction angle of the complete rock material is 35°, and the bulk density of the complete rock material is 25kN / m 3 , the internal friction angle between the support structure and the rock mass interface is 18°. If the rock mass is passively damaged by the support structure, the passive lateral rock pressure E p The limit value of is a critical design parameter.

[0057] 2. Discrete the outwardly inclined bedding jointed rock mass into rigid rock blocks a...

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Abstract

The invention relates to a method for calculating pressure of passive lateral rocks for jointed rocks on an outwardly-inclined bedding slope, pertaining to the technical field of rock pressure analyses in rock and soil mechanics. The method comprises following steps: dispersing bedding joint rocks based on joint surfaces into rigid rocks in a definite number by taking jointed rocks on the outwardly-inclined bedding slope as an object of study; taking pressure of passive lateral rocks as an objective function and shearing force and normal force of joint surfaces as unknown quantities based on a Pan Jiazheng maximum principle to create an equilibrium equation satisfying damaged rocks, yield conditions of joint surfaces, and yield conditions of contact surfaces for rocks and supporting structures; and solving them to obtain the maximum limit value for passive lateral rocks for jointed rocks the an outwardly-inclined bedding slope. The method for calculating pressure of passive lateral rocks for jointed rocks on the outwardly-inclined bedding slope has following beneficial effects: the method is accurate in concept, high in calculation precision, and easy and convenient in engineering application and can be applied to design of structures for retaining walls on jointed rock slopes, slide-resistant piles and pile-anchor supports.

Description

technical field [0001] The invention relates to a calculation method for passive lateral rock pressure of an outwardly inclined bedding joint rock mass, in particular to an earth pressure calculation method for passive destruction of bedding joint rock mass. The invention belongs to the technical field of rock and soil pressure analysis in rock and soil mechanics. Background technique [0002] In geotechnical engineering projects, a large number of support projects such as slopes and foundation pits will be encountered. In order to ensure the safe operation of slopes and foundation pits, some necessary support measures must be carried out, such as retaining walls, anti-slide piles, underground Diaphragm wall, pile-anchor support and other structural forms; in the design and construction of these support structures, the calculation of rock-soil pressure is a very important content, and the calculation of earth pressure for the interaction between the support structure and roc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 李泽彭普杜时贵周宇薛龙
Owner KUNMING UNIV OF SCI & TECH
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