《深基坑开挖与挡土支护系统(英文)》简介
《深基坑开挖与挡土支护系统(英文)》这本书是由.仉文岗主编创作的,《深基坑开挖与挡土支护系统(英文)》共有210章节
1
Preface
Excavation is an essential segment of foundation engineering,for example,in the ...
2
目录
目 录 Preface 1 Overview 2 Overall Stability 2.1 Introduction 2.2 Types of Factors...
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1 Overview
With the development of urbanization,the scale of urban construction is expandin...
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2 Overall Stability
...
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2.1 Introduction
Failures or collapses of excavations are disastrous at excavation sites.At worst...
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2.2 Types of Factors of Safety
There are basically three methods to determine the factor of safety for stabilit...
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2.3 Basal Heave Stability
The analyses of the basal heave failure are only applicable to clayey soils(On t...
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2.3.1 Bearing capacity method
As shown in Figure 2.2,the soil weight above the level of the excavation surface...
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2.3.2 Negative bearing capacity method
The negative bearing capacity method assumes that the unloading behavior caused ...
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2.3.3 Slip circle method
Let the trial failure surfaces of the basal heave failure be assumed to be basic...
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2.3.4 Finite⁃element method with strength reductio...
Besides the limit equilibrium methods discussed above,finite element method(FEM)...
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2.3.5 Goh’s method
Considering the influence of clay thickness,wall embedment depth and wall stiffn...
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2.4 Push⁃in Stability
There are two analysis methods for the push⁃in failure:free earth support method...
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2.5 Overall Shear Failure of Cantilever Walls
Theoretically speaking,the overall shear failure analysis of a cantilever wall s...
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3 Earth Pressure and Strut Force
...
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3.1 Introduction
Problems of deep excavation,whether stability analysis,stress analysis or deform...
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3.2 Lateral Earth Pressure in Braced Excavations
...
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3.2.1 In situ lateral stress
Horizontal(lateral)stress in soils is usually described and quantified by means ...
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3.2.2 Conventional earth pressure theory
When soil is removed from the front of an embedded retaining wall,the wall tends...
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3.2.3 Apparent pressure diagrams(APD)
The empirical methods of Terzaghi and Peck(1967)and Peck(1969a)were obtained fro...
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3.3 Parametric Study
A series of parametric study was carried out to look into a refined apparent pre...
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3.3.1 Effect of soil modulus
The strut force exceedance ratio between the strut force is derived from the fin...
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3.3.2 Effect of the cu profile and value
Variations of cu with depth have been shown to affect the performance of braced ...
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3.3.3 Effect of wall stiffness
Diaphragm walls ranging from 0.6 m to 1.5 m thick,which represent an almost 15 t...
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3.3.4 Effect of excavation width(B)
Varying excavation widths appear to have no significant effect on the strut forc...
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3.3.5 Effect of thickness to hard stratum(T)
The thickness of soft clay below the excavation level is seen to impose strong e...
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3.3.6 Effect of preloading
To stiffen the support system,higher preload has been used in an attempt to redu...
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3.3.7 Effect of temperature
Struts will expand or contract according toΔL=αΔtL where L=strut length; Δt=chan...
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3.4 One⁃Strut Failure Analysis
In Singapore,braced retaining wall systems are commonly used to construct cut an...
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3.4.1 Numerical schemes
Figure 3.14 shows a typical cross⁃section and plan view for the cases considered...