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Jaw Crusher
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JC Series Jaw Crusher
JC Series Jaw Crusher
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HPT Cone Crusher
HPT Cone Crusher
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HST Hydraulic Cone Crusher
HST Hydraulic Cone Crusher
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Secondary Impact Crusher
Secondary Impact Crusher
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CI5X Series Impact Crushers
CI5X Series Impact Crushers
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C6X Series Jaw Crusher
C6X Series Jaw Crusher
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Crawler Mobile Crusher
Crawler Mobile Crusher
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Mobile VSI Crusher
Mobile VSI Crusher
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Mobile Impact Crusher
Mobile Impact Crusher
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Secondary Cone Crusher
Secondary Cone Crusher
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Mobile Primary Jaw Crusher
Mobile Primary Jaw Crusher
Applications: Primary crusher in mining, quarry, mixing and batching plant, road and building construction, highway, railway and subway, and water conservancy.

K Series Mobile Crushing & Screening Plant
K Series Mobile Crushing & Screening Plant
Applications: Primary crusher in mining, quarry, mixing and batching plant, road and building construction, highway, railway and subway, and water conservancy.

Combination Mobile Crusher
Combination Mobile Crusher
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Mobile Vibrating Screen
Mobile Vibrating Screen
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Micro Powder Mill
Micro Powder Mill
Applications:metallurgy, chemical, mining, painting, pigment, and cosmetics industry.etc

VM  Vertical Grinding Mill
VM  Vertical Grinding Mill
Applications: Glass fiber industry, coal industry, chemical industry, and for large scale powder making and non mental mine industry.

MTWSeries European Tech. Grinding Mill
MTWSeries European Tech. Grinding Mill
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Raymond Mill
Raymond Mill
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T130X Superfine Grinding Mill
T130X Superfine Grinding Mill
Applications: Cement, Coal , power plant desulfurization, metallurgy, Chemical Industry, nonmetallic mineral, construction material, ceramics.

VSI Vertical Shaft Impact Crusher
VSI Vertical Shaft Impact Crusher
Applications: Mechanism sand, bituminous concrete, metal mine, aggregates shaping

PCL Vertical Shaft Impact Crusher
PCL Vertical Shaft Impact Crusher
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VSI5X Vertical Shaft Impact Crusher
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VSI6X Series Vertical Shaft Impact Crusher
Applications: metallic and nonmetallic ore, building material, artificial sand making and every kind of metallurgical slag
latest case

80TPH Mobile Crushing Plant in Mogolia
Application: Granite
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80TPH Mobile Crushing Plant in Mogolia
Application: Granite
Fineness: 051020mm
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80TPH Mobile Crushing Plant in Mogolia
Application: Granite
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80TPH Mobile Crushing Plant in Mogolia
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subgrade reaction coefficient
The Coefficient of Subgrade Reaction and Its Accuracy on
2017413 · the coefficient of subgrade reaction, ks (Dutta and Roy, 2002). Evaluation of the numerical values of k s is one of the most complex and sophisticated problems in geotechnical
Coefficient of Subgrade Reaction , Structural Analysis
翻译此页用户评级: 5/5Estimation of horizontal subgrade reaction coefficient
The subgrade reaction value shown in Fig. 4, divided by the pile width B and the square root of the deflection, gives the subgrade reaction coefficient k s shown in Fig. 5. The solid lines in the figure show the relation between the value of the identified parameter and the deflection at each stage.
Lateral SoilPile Stiffness Subjected to Vertical and
· The coefficient of horizontal subgrade reaction, , is influenced by many factors among which are the pile deflection, the effective overburden pressure, the relative density of soil, groundwater
COEFFICIENT OF DYNAMIC HORIZONTAL SUBGRADE
2015422 · In this method, the coefficient of dynamic horizontal subgrade reaction ( K he ) is expressed as the product ( K he = α K h ) of the coefficient of static horizontal subgrade reaction ( K h ) and a correction factor ( α ), when the seismic intensity method or the
Estimation of the Coefficient of Subgrade Reaction using
coefficient of subgrade reaction ks is the ratio between the pressure “q” at any given point and the settlement “s” produced by load application at that point.
Modulus of Subgrade Reaction and Deflection
2016218 · modulus of ‘subgrade’ reaction and the deflection. The governing equation for the deflection in a beam is given by: In this equation, is the elastic modulus of the structural element, its moment of
Interpretation of Subgrade Reaction from Lateral Load
2018725 · Where nh is the coefficient of subgrade reaction and d is pile diameter. This applies to cohesionless soils and normally consolidated clays where these soils indicate increasing strength with depth due to increase in overburden pressure.
EVALUATION OF COEFFICIENTS OF SUBGRADE
The theories of vertical and horizontal subgrade reaction are based on the simplifying assumptions that the subgrade obeys Hooke"s law, and that the subgrade reaction on the base of a rigid centrally loaded plate resting on the horizontal surface of the subgrade has the same value at every point of the base.
Correlation between Soil Bearing Capacity and
201533 · Hence, the modulus of subgrade reaction, which is the function of soil settlement and the external pressure,is used for flexible foundation design. Correlations The most common – and probably the safest – answer to the question of correlation between bearing capacity and the modulus of subgrade reaction is that there is no correlation.
Modulus of Subgrade reaction Which one to use
2017830 · The modulus of subgrade reaction is an often misunderstood and misused concept for the thickness design of slabsonground. Terzaghi in 1955 (Ref. 1, P. 300) attributed this confusion to the initial work by Hayashi in
Numerical and Theoretical Study of Plate Load Test to
· Coefficient of subgrade reaction at every point under the foundation obtains from relation (1): (1) Where q is amount of applied stress in kN/m² and is the obtained settlement in meter. Winkler model was suggested for rigid plates, at first, then it was developed to calculate the stresses
DETERMINING MODULUS OF SUBGRADE REACTION (K
2014923 · subgrade reaction in Section 6.1, which is a modification of ASTM D 1196. 1.3 Data from the triaxial compression test on compacted specimens and the estimated Potential Vertical Rise (PVR) are used in estimating a modulus of subgrade reaction from
Correlation between Subgrade Reaction Modulus and
E, subgrade reaction modulus k (kvalue), and California Bearing Ratio (CBR). The Federal Aviation Administration’s (FAA) FAARFIELD thickness design program embeds a simple mathematical correlation between k value and CBR.
Estimation of vertical subgrade reaction coefficient from
2017825 · The coefficient of subgrade reaction k is a conceptual relationship, which is defined as the soil pressure σ exerted divided by the measured deflection δ: k=σ/δ (1)
Evaluation of the coefficient of subgrade reaction for
Evaluation of the coefficient of subgrade reaction for design of multipropped diaphragm walls from DMT moduli P. Monaco & S. Marchetti University of L"Aquila, Italy
Database approach to estimate subgrade reaction
· Database approach to estimate subgrade reaction coefficient for horizontally loaded piles Yusuke Honjo Department of Civil Engineering, Gifu University, Gifu, Japan
Subgrade Design and Construction iowasudas
2012108 · include soil classification, soil unit weight, coefficient of lateral earth pressure, and estimated CBR or resilient modulus. Table 6E1.01 summarizes the suitability of different soils for subgrade modulus of subgrade reaction (k), and elastic (resilient) modulus. Although there are other Chapter 6 Geotechnical Section 6E1
EVALUATION OF COEFFICIENTS OF SUBGRADE
1994129 · evaluation of coefficients of subgrade reaction. the theories of vertical and horizontal subgrade reaction are developed and reviewed. they are based on the simplifying assumptions that the subgrade obeys hooke"s law, and that the subgrade reaction on the base of a rigid centrally loaded plate resting on the horizontal surface of the subgrade has the same value at every point of the base.
Resilient Modulus & Modulus of Subgrade Reaction
201621 · The modulus of subgrade reaction, which is defined as the ratio between an applied pressure q and the deflection Δ, can be expressed as: v a q M k R (1 ) 2 2 " S (9) It can be found that the modulus of subgrade reaction k is inversely proportional to the diameter of the plate (Huang, 1993)).
California Bearing Ratio (CBR), Plate Load Test (PLT
· 2. Literature Review The modulus of subgrade reaction, s (also referred to as k Coefficient of Elastic Uniform Compression, C u) is a relationship between soil pressure and deflection which is pro
Evaluation of modulus of subgrade reaction (Ks) in
2012221 · The modulus of subgrade reaction is a conceptual relationship between soil pressure and deflection that is widely used in the structural analysis of foundation members. It is used for continuous footing, mats and various types of
Subgrade Modulus of Laterally Loaded Piles in Clays
and maximum moment of laterally loaded piles in clays is pro loaded piles involves the theory of subgrade reaction (1), in which loaddeflection relationships for the supporting soil are where Np is the ultimate lateral soil resistance coefficient.
Subgrade Characterization The University of Memphis
2017810 · Subgrade Characterization. CIVL 3137 28 Pavement Design Factors Changes over Time Subgrade Support Provided Seasonal Changes in Subgrade Support Spring constant = modulus of subgrade reaction (K) CIVL 3137 39 Modulus of Subgrade Reaction 30 in. CIVL 3137 40 Modulus of Subgrade Reaction. CIVL 3137 41 Modulus of Subgrade Reaction K 1
MODULUS OF SUBGRADE REACTION: NEW PERSPECTIVE
The modulus, or coefficient, of subgrade reaction, k, and the Winkler subgrade model in which it appears have been used widely in foun dation engineering and pavement design for many years.
Coefficient of subgrade reaction , Article about
2018102 · The ratio of load per unit area on soil to the corresponding deformation. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, or
Coefficients of Subgrade Reaction Scribd
Coefficients of Subgrade Reaction Download as PDF File (.pdf), Text File (.txt) or read online. How to define value for coefficient of soil subgrade reaction. The Coefficient of Subgrade Reactionmisunderstood Concept. Evaluation of Coefficient of Subgrade Reaction Terzaghi. BROMS Horiz Loading on Piles(Cohesionless)LABKOMPUSAT.
Lateral Loaded Piles Modulus of Horizontal
2006918 · The sand has a coefficient of variation of horizontal subgrade reaction equal to 10 tons/ft^3 (11.5 pci), and the piles are 50 feet long. Both piles are assumed to be free head piles and a 10 kip load is applied at the ground surface.
Coefficient of Subgrade Reaction for the Permeable
2018717 · Based on the relationship between load and settlement that is obtained from the test, coefficient of subgrade reaction (k) was calculated. Through the relationship between loadsettlement and k, structural characteristics were evaluated according to material differences of the pavements.
Méthode réaction France pour :influence variation des
2016420 · subgrade reaction coefficient, soil parameters c and <p and retaining wall stiffness on theoretical displacements and pressures behind anchored and selfstable retaining wall in the ( DENEBOLALPC r software. * La présente communication fait partie de l"ensemble des conférences présentées, le 14 septembre 1994,
NHI05037 Geotech Federal Highway
2015410 · 5.4.6 Modulus of Subgrade Reaction Mechanistic solutions for the stresses and strains in rigid pavements have historically characterized the stiffness of the foundation soil in terms of the modulus of subgrade reaction k (Figure 523).
Modulus of subgrade reaction University of Babylon
201166 · The modulus of subgrade reaction and its probabilistic characteristics can be determined directly by field test. As an alternative to the determination of the modulus of subgrade reaction, regular soil properties may be used (Gagin & Ivanilov, 2008).
Lateral Loaded Piles Modulus of Horizontal
2006918 · The sand has a coefficient of variation of horizontal subgrade reaction equal to 10 tons/ft^3 (11.5 pci), and the piles are 50 feet long. Both piles are assumed to be free head piles and a 10 kip load is applied at the ground surface.
Estimation of horizontal subgrade reaction coefficient
The subgrade reaction value shown in Fig. 4, divided by the pile width B and the square root of the deflection, gives the subgrade reaction coefficient k s shown in Fig. 5. The solid lines in the figure show the relation between the value of the identified parameter and the deflection at each stage.
An Introduction to Engineering Properties of Soil and Rock
Engineering Properties of Soil and Rock GUYER PARTNERS 44240 Clubhouse Drive El Macero, CA 95618 9. MODULUS OF SUBGRADE REACTION . 10. COEFFICIENT OF ATREST EARTH PRESSURE . and between the coefficient of uniformity, Cu, and void ratio, in figure 4.
CORRELATION OF SUBGRADE REACTION WITH CBR,
1984330 · Westergaard"s modulus of subgrade reaction (Kvalue) is used for designing rigid (concrete) pavements. Kvalue is obtained from an expensive and time consuming field Plate Bearing Test. In order to investigate the correlation of Kvalue with laboratory tests, fifteen values of field K ranging from
Subgrade Characterization The University of Memphis
2017810 · Subgrade Characterization. CIVL 3137 28 Pavement Design Factors Changes over Time Subgrade Support Provided Seasonal Changes in Subgrade Support Spring constant = modulus of subgrade reaction (K) CIVL 3137 39 Modulus of Subgrade Reaction 30 in. CIVL 3137 40 Modulus of Subgrade Reaction. CIVL 3137 41 Modulus of Subgrade Reaction K 1
Subgrade Design and Construction iowasudas
2012108 · include soil classification, soil unit weight, coefficient of lateral earth pressure, and estimated CBR or resilient modulus. Table 6E1.01 summarizes the suitability of different soils for subgrade modulus of subgrade reaction (k), and elastic (resilient) modulus. Although there are other Chapter 6 Geotechnical Section 6E1
Estimation of Subgrade Resilient Modulus Using the
· Subgrade is the underlying soil of a pavement structure, and its characterization allows for the design of a proper foundation for the pavement. Based on the available support from the
SURFACE PAVEMENT SOLUTIONS FOR POOR SUBGRADE
2008828 · The use of geosynthetic reinforcements at the base/subgrade interface are not “surface” solutions, as they require removal of the pavement and base. The insitu Coefficient of Consolidation (Cv), and the Compression Index Surface Pavement Solutions for Poor Subgrade Conditions .
Soil SubGrade Modulus StructurePoint
2009223 · Soil SubGrade Modulus SubgradeSubbase Strength Soil bearing capacity, soil compressibility, and soil modulus of subgrade reaction are various measures of strengthdeformation properties of soil. It is important to consider how these parameters apply to the design of floor slabs.
Experimental Study of Estimating the Subgrade
2016123 · The subgrade reaction modulus (k s) is a mathematical constant that represents the foundation’s stiffness; it is defined as the ratio of the pressure (q) against the mat to the settlement (δ) at a
A Study on the Characteristics of Dynamic Horizontal
2004713 · the dynamic coefficient of subgrade reaction, analysis was conducted at the natural frequency of the pile foundation, for which the relative displacement of piles and the ground became most remarkable, and the dynamic and static coefficients of horizontal subgrade reaction were
Modelling of Soil behaviour IITK
2014312 · numerical value of the coefficient of subgrade reaction not only depends on the nature of the subgrade, but also on the dimensions of the loaded area as well. Limitations of Winkler Model Since the subgrade stiffness is the only parameter in the Winkler model to idealize the physical behaviour of the subgrade, care must be taken to
Experimental Evaluation of Subgrade Modulus and Its
· PREFACE This report describes an experimental program developed in the laboratory for the evaluation of the coefficient of subgrade reaction for use in the dis
Foundation size effect on modulus of sub grade reaction
201143 · settlement (y) produced by load application at that point, is named the coefficient of subgrade reaction, Ks: (1) In fact, in this model subsoil is replaced by fictitious springs whose stiffness equals to
An Experimental Study on the Effect of Foundation Depth
· The coefficient of subgrade reaction . s. is the ratio be k tween the pressure “q ” at any given point and the settle ment “
Investigation of Subgrade Reaction Coefficient in
2017831 · Parametric studies on subgrade reaction coefficient of sand soil in Bandar Abbas city are few, so this paper uses geotechnical data of a site in Bandar Abbas city (Iran) to determine subgrade reaction coefficient by using of theoretical, experimental relations and numerical methods.
coefficient of subgrade中文是什么意思,coefficient of
Coefficient of subgrade reaction 浅基础基床系数 Coefficient of subgrade 路基抗力系数 Based on shear stress strain relation of soft soil , an approximate solution to the coefficient of subgrade
Study on Horizontal Subgrade Reaction of Piles in
2018812 · Evaluation of the coefficient of horizontal subgrade reaction of piles Changes of the coefficient of horizontal subgrade reaction response to pile displacement, in which take place in various tests, are evaluated through the method by Tokimatsu proposed
CHAPTER 8
201324 · CHAPTER 8 CALCULATION THEORY Detailed in this chapter: • the theories behind the program • the equations and methods that are use to perform the analyses. p = empirical coefficient depending on soil type and method of construction. It is defined in Table 83 below. B = pile diameter q ult= ultimate end bearing pressure
Coefficient of Subgrade Reaction for the Permeable
2018717 · Based on the relationship between load and settlement that is obtained from the test, coefficient of subgrade reaction (k) was calculated. Through the relationship between loadsettlement and k, structural characteristics were evaluated according to material differences of the pavements.
Determination of subgrade reaction modulus of two
2013830 · The coefficient of subgrade reaction, K s, is the initial slope of the curve (Fig. 1) until the limit pressure, p, is reached. Many researches including Biot (1937), Terzaghi (1955), Vesic (1961) and have investigated the effective factors and determination approaches of
KR: The Resilient Modulus of Subgrade Reaction
1 KR: The Resilient Modulus of Subgrade Reaction J.A. FISCHER, M.R. THOMPSON, A.M. IOANNIDES, and E.J. BARENBERG ABSTRACT The concept of the resilient modulus of sub grade reaction
ANALYSIS OF EMBEDDED RETAINING WALL USING THE
2015319 · Analysis of embedded retaining wall using the Subgrade Reaction Method 61 2 2 M x dx d w x EJ = (4) 3 3 T x dx d w x EJ = (5) where M(x) is the bending moment and T(x) is the shearing force. In order to apply the Winkler model in the context
THIS PAGE LEFT BLANK Caltrans
2013816 · REACTION . by . TEERAWUT JUIRNARONGRIT SCOTT A. ASHFORD . Final Report Submitted to Caltrans under Contract No. 59A0051 . Department of Structural Engineering 6.1 Pile Diameter Effect on Initial Modulus of Subgrade Reaction.. 191 6.1.1 Method of Analysis
Determining Additional Modulus of Subgrade Reaction
· coefficient of vertical subgrade reaction ( kv) is defined by foundation pressure ( q) divided by appropriate settlement ( δ) of soil under foundation, and it is expressed by Equation (1).
Estimation of vertical subgrade reaction coefficient
The vertical subgrade reaction coefficient Kv is extensively used by structural engineers for the design of shallow foundations. The value of the coefficient is usually estimated by the geotechnical engineer by three possible ways: in situ testing, laboratory testing and bibliography.
BEHAVIOUR OF LATERALLY LOADED PILES. NDSU
2001824 · and theoretical behaviour of laterally loaded piles. Model concrete piles were driven into a uniformly prepared sand bed and were loaded to failure while horizontal subgrade reaction coefficient (Subgrade Modulus), kh defined by Terzaghi (1955), by the equation: k h= P / y
RC1531 Pavement Subgrade MR Design Values for
2016225 · Pavement Subgrade MR Design Values for Michigan’s Seasonal Changes Final Report July 22, 2009 Gilbert Baladi, Ph.D., PE Tyler Dawson Colin Sessions