Method of deep foundation pit excavation

A technology of deep foundation pit and slicing method, applied in excavation, infrastructure engineering, construction, etc., can solve the problems of collapse and high cost of foundation pit enclosure structure

Inactive Publication Date: 2019-06-04
北京正和恒基滨水生态环境治理股份有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for excavating a deep foundation pit to solve the problem in the prior art that the construction a...

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
  • Method of deep foundation pit excavation
  • Method of deep foundation pit excavation
  • Method of deep foundation pit excavation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0086] Such as Figure 2-3 As shown, in this embodiment, the difference between the deep foundation pit excavation method and the first embodiment is that the first instability sliding curve 12 is set at the position from the highest point to the midpoint of the slope to be excavated, The soil slope is provided with a second instability sliding curve 13; judge whether the minimum safety factor of the first instability sliding curve 12 is greater than the standard safety factor; if the minimum safety factor of the first instability sliding curve 12 is greater than the standard safety factor If the minimum safety factor of the second instability sliding curve 13 is greater than the minimum safety factor, perform the second excavation according to the second instability sliding curve 13 side. If the minimum safety factor of the second instability sliding curve 13 is not greater than the minimum safety factor, reset the second instability sliding curve 13; if the minimum safety fa...

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 provides a method of deep foundation pit excavation. The method comprises the following steps that a standard safety factor of a to-be-dug soil slope is acquired, and an instability sliding curve is preset on the to-be-dug soil slope; the minimum safety factor is calculated according to the instability sliding curve; whether the minimum safety factor of the instability sliding curveis larger than the standard safety factor or not is judged; if so, excavation is conducted according to one side of the instability sliding curve; and if not, the instability sliding curve is preset again. The problems that the cost of a pit support structure needed to be formed is high, and collapsing occurs when excavation is conducted directly are solved. The minimum safety factor is calculatedaccording to the preset instability sliding curve of the dug soil slope due to the fact that stability loss of an average slope, and a sliding surface is a curve surface, the minimum safety factor ofthe instability sliding curve is larger than the standard safety factor, excavation is conducted according to the inner side of the instability sliding curve, the problem of collapsing on the soil slope does not occur, it is guaranteed that deep foundation pit construction excavation is safely and fast conducted, the working efficiency is high, and the economic cost is low.

Description

technical field [0001] The invention relates to the technical field of engineering construction methods, in particular to a deep foundation pit excavation method. Background technique [0002] When excavating deep foundation pit construction, there are mainly the following two methods: [0003] The first type: the foundation pit enclosure structure needs to be formed once before the excavation of the foundation pit. After the enclosure structure reaches the design strength, the foundation pit is excavated. The soil around the foundation pit is not pre-reinforced, so it cannot be excavated Structure, targeted adjustment of the enclosure structure, economy and reliability cannot be taken into account; and the following problems still exist in the traditional enclosure structure: the depth of the enclosure structure is much greater than the excavation depth of the foundation pit; the opening of the enclosure structure, the grooved wall The required mud is likely to cause envir...

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
IPC IPC(8): E02D17/02
Inventor 胡青董彦良吴晶韩立宾冯艳丽邓印田王延良程惠明田地富李志博郑小辉李美睿
Owner 北京正和恒基滨水生态环境治理股份有限公司
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