Calculation Method of Safe Thickness of Bearing Layer of Pile Foundation in Karst Area

A technology of safety thickness and calculation method, applied in calculation, special data processing application, instrument, etc., can solve problems such as not considering the influence of self-weight structure

Active Publication Date: 2017-12-05
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, the above scheme does not consider the influence of self-weight on the structure, and the tensile bending failure mode is simply described according to the theoretical mechanics formula

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Calculation Method of Safe Thickness of Bearing Layer of Pile Foundation in Karst Area
  • Calculation Method of Safe Thickness of Bearing Layer of Pile Foundation in Karst Area
  • Calculation Method of Safe Thickness of Bearing Layer of Pile Foundation in Karst Area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0054] 1. Theoretical basis:

[0055] Assumption: In order to facilitate the analysis of the mechanism of action between the pile foundation and the karst roof, the two can be considered as a system. Considering that the failure of the karst roof is a typical brittle failure, which is safer, the model can be simplified to a rectangular plate subject to a mid-span concentrated load model (see figure 1), the roof strata generally may have three modes of punching failure, shear failure and bending-tension failure. And make the following basic assumptions:

[0056] (1) The rock mass around the cave is a continuous linear elastic body and the time effect is not considered, and the cave is stable in the natural state; (2) The rock mass around the cave is a uniform isotropic material; (3) The analysis does not include the The beneficial effects of fillings ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a calculation method of safety thickness of supporting layers of pile foundations of karst areas. The calculation method comprises the following steps: step 1, establishing an assumed model, and simplifying the model; step 2, performing theoretical analysis on the safety thickness of the supporting layers; step 3, performing preliminary checking calculation on the safety thickness of the supporting layers; step 4, performing accurate checking calculation on the safety thickness of the supporting layers; step 5, judging whether the supporting layers satisfy calculation requirements. The calculation method disclosed by the invention is simple in calculation, facilitates design optimization of pile foundations, and is high in operability; in addition, through the adoption of the calculation method, the improvement of relevant norms is promoted, so that huge economic benefits and social benefits can be brought.

Description

technical field [0001] The invention relates to a method for judging the safe thickness of a bearing layer when a pile foundation is placed above a hollow area, in particular to a method for calculating the safe thickness of a bearing layer of a pile foundation in a karst area. Background technique [0002] my country's karst landforms are widely distributed and large in area. Due to the existence of karst caves, they are mostly in the form of dissolution, karst trenches, karst troughs, small and medium-sized beaded caves, or a single small karst cave fissure, which brings great difficulties to the design and construction of pile foundations in karst areas. Existing design codes and industry standards have few provisions on pile foundation design in karst areas, and the content is too abstract, or the requirements are too conservative, and the overall operability is not strong. In order to ensure the quality of the pile foundation, the design principle of "one column, one p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 柏华军
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap