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Design method for composite retaining structure

A technology of retaining structure and design method, which can be used in basic structure engineering, excavation, calculation, etc., and can solve the problems of large area, disturbance of soil slope structure, and high cost.

Inactive Publication Date: 2016-11-09
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to overcome the deficiencies in the prior art and provide a design method for a composite retaining structure, which can effectively solve the problem of soil slope support and solve the complex construction and large footprint of traditional support structures. , The original structure of the soil slope is greatly disturbed, the cost is high, and the efficiency is low. It can effectively reflect the interaction between the structure and the soil, and the mutual influence between the deformation of the structure and the soil, so that the structural parameters can be accurately calculated. To determine and effectively evaluate the effect of composite retaining structures

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Embodiment Construction

[0053] Below in conjunction with accompanying drawing of description, the present invention will be further described.

[0054] The invention provides a design method of a composite soil retaining structure, comprising the following steps:

[0055] 1) Obtain the mechanical parameters of the soil slope to be supported, and determine the composite retaining structure;

[0056] Project overview: A canal has a bottom width of 7.0m, a canal bottom elevation of about 40.7m, a maximum depth of cut of about 12m, a design water depth of 3.5m, a side slope of 1:2.5, and a canal bottom aspect ratio of 1:10000. The length of the soil along the main sliding section is 35m-38m; the maximum thickness of the sliding soil is 5.9m, and the maximum distance of the sliding tongue to the direction of the channel reaches 5m; the perimeter of the landslide is clear, the rear wall is steep, about 40°-50°, The maximum height is 2.5m; the sliding soil extends into the channel, which has affected the w...

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Abstract

The invention discloses a design method for a composite retaining structure. The design method includes the following steps that various mechanical parameters of a to-be-supported earth slope are obtained, and the composite retaining structure is determined; a single pile structure mechanical model of the composite retaining structure is built; based on the ultimate balance theory and the elastic foundation beam theory, an analytical solution of the single pile structure mechanical model is obtained through calculation, and a calculation equation of rock bolt force of the composite retaining structure is determined; landslide thrust acting on a single pile is obtained, counter-force acting on the single pile is obtained, and the rock bolt force of the composite retaining structure is obtained; internal force on the single pile is calculated; and the composite retaining structure is subject to structural reinforcement. The design method for the composite retaining structure is precise, reasonable and efficient, the aim of earth slope supporting can be effectively achieved, the structure and soil body joint action can be effectively reflected, the mutual influence relation between the structure and soil body deformation can be effectively reflected, structure parameters are accurately determined accordingly, and the action effect of the composite retaining structure can be effectively evaluated.

Description

technical field [0001] The invention relates to a composite soil retaining structure, in particular to a design method of the composite soil retaining structure, and belongs to the technical field of soil slope stability reinforcement and support engineering. Background technique [0002] In the field of geotechnical engineering technology, for natural or artificial excavated slopes, foundation pit excavation, cavern excavation and other projects where landslides may occur, certain soil retaining measures need to be taken. This structure is called retaining Soil structure, also known as support structure. For different projects, the support structures adopted are different: for foundation pit excavation, the support structures generally adopted include high-pressure rotary grouting pile support structure, channel steel sheet pile support structure, bored cast-in-situ pile support structure structures, etc.; for cavern excavation, generally used support structures include sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20G06F17/50
CPCE02D17/207G06F30/13G06F30/367
Inventor 张坤勇李威杜伟李广山陈恕
Owner HOHAI UNIV
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