Basic Geotechnical Earthquake Phần 7 docx

... –16.366 + 1. 178 M – 0.927logR – 0.013R + 0.657logW + 0.348logT + 4.527log(100-F) – 0.922D 50 (9.5) For lateral spreading of gently sloping ground: log D H = –15 .78 7 + 1. 178 M – 0.927logR - 0.013R ... s u L 86 Basic Geotechnical Earthquake Engineering middle one-third of footing. q′= 89.988 kN/m 2 from Eq. (7. 9). q ult in Eq. (7. 11) is determined using Eq. (7. 6) which makes use...

Ngày tải lên: 07/08/2014, 04:21

... 4, 1 975 , magnitude = 7. 3) on the basis of micro seismic activity, ground tilting and unusual animal behaviour (Nandi, 1999). They also foretold 4 out of 5 events of magnitude 7 during 1 976 -77 . ... the 28 Basic Geotechnical Earthquake Engineering Fig. 2.19 Acceleration, velocity and displacement versus time recorded during San Fernando earthquake (Courtesy: Day, 2002) The geo...

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... (Relationship between maximum acceleration, 48 Basic Geotechnical Earthquake Engineering have been developed by various researchers. Donovan and Bornstein, 1 978 , developed the following equation for ... Very sensitive clays may lose so 38 Basic Geotechnical Earthquake Engineering 38 DYNAMIC SOIL PROPERTIES 4 CHAPTER 4.1 INTRODUCTION This book is concerned with geotechnical pro...

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... 479 . 375 lb/ft From 5ft to 50ft, P 2A =k A γ t (5)(45) + (0.5)(k A )(γ b )(45) 2 = (0.295)(130)(5)(45) + (0.5)(0.295)(64)(45) 2 = 8628 .75 + 19116 = 277 44 .75 lb/ft. P A =P 1A + P 2A = 479 . 375 ... (0.65)(0.294)(125)(20) = 477 .75 lb/ft 2 resultant force = σ h H = ( 477 .75 )(20) = 9555 lb/ft Earthquake case: P E = 1 2 12 2 k a g H A max t / () F H G I K J γ = (0.5)(0.294) 0.5 (0.2...

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... killed 1 976 Tangshan, China 7. 5 655,000 19 27 Qinghai, China 7. 7 200,000 1923 Tokyo, Japan 7. 9 143,000 1908 Messina, Italy 6.9 110,000 1920 Northern China 8.3 100,000 1932 Gansu, China 7. 6 70 ,000 1 970 ... 57 6.2 Factors Governing Liquefaction in the Field 64 6.3 Liquefaction Analysis 67 6.4 Antiliquefaction Measures 72 7. EARTHQUAKE RESISTANT DESIGN FOR SHALLOW FOUNDATION...

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... deformation within them. Introduction to Geotechnical Earthquake Engineering 7 The sequence concluding with a large earthquake in Kashmir in 1555. The central Himalayan earthquake may have been based on ... earthquake as well. In 171 3 a severe earthquake damaged Bhutan and parts of Assam (Ambraseys and Jackson, 2003). Thirteen years later, in September 173 7, a catastrophic ea...

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... environments. 54 Basic Geotechnical Earthquake Engineering Selection of Design Earthquake The selection of a design earthquake may be based on: (a) Known design-level and maximum credible earthquake ... For earthquake magnitudes other than 7. 5, the CRR obtained from Fig. 6.10 is multiplied by magnitude scaling factor. Magnitude scaling factor has been given in Table 6.1. 58 B...

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... friction angle φ′ as per Fig. 7. 3. Factor of safety FS is determined as follows: FS = q q ult all (7. 15) q ult in Eq. (7. 15) is determined using Eq. (7. 13) or (7. 14). q all in Eq. (7. 15) is allowable bearing ... of safety FS is determined as follows: FS = q q ult all (7. 18) q ult in Eq. (7. 18) is determined using Eq. (7. 16) or (7. 17) . q all in Eq. (7. 18) is allowable bearin...

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... the types of earthquake resistant structural systems? Briefly explain about them. 5. Comment on earthquake engineering design techniques. 126 Basic Geotechnical Earthquake Engineering Earthquake ... of important structures. 124 Basic Geotechnical Earthquake Engineering Fig. 11.8 Schematic of the earthquake design procedure (Courtesy: http://www.branz.co.nz) Earthquake Re...

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... 43 Attenuation 47, 48, 51 Attenuation equations 47 Awarness compaign 36 B Bearing capacity 76 , 77 , 78 , 79 , 80, 81, 82, 83, 84, 86 INDEX Blasting 73 Braced frames 1 27 Brittle behavior 10 C Catastrophic earthquakes ... 21 Friction piles 87 G General shear failure 76 , 79 Geology 1, 7 Geotechnical earthquake engineering 1 GPS 5 Ground motion parameters 52 Ground stabilizat...

Ngày tải lên: 07/08/2014, 04:21