Basic Geotechnical Earthquake Phần 5 pptx

... and Design Earthquake 55 (a) Rock with 250 0 ft/sec < V s < 50 00 ft/sec (760 m/sec < V s < 152 0 m/sec) (b) Very dense soil and soft rock with 1200 ft/sec < V s < 250 0 ft/sec ... 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 maximu...

Ngày tải lên: 07/08/2014, 04:21

... Current Science, 84, 6 95- 701. Ray, 1 953 , Isoseismals for the great Assam Earthquake of Aug. 15 1 950 , 35- 37, in A compilation of papers on the Assam Earthquake of August 15, 1 950 . ed. M. B. Ramachandra ... 84 Rounded 66 Running soil 65 Rupture 17, 18, 23, 24, 25, 28, 29 S S waves 15, 16, 27 Sand Volcanoes 58 SASW 42, 43 Scenario earthquakes 46 Seismic 46, 47, 48, 50 , 53 ,...

Ngày tải lên: 07/08/2014, 04:21

... Chile 8.7 0 1 957 Aleutian Islands 8.6 0 1 950 Himalayan region 8.6 8 ,50 0 1906 Ecuador 8.6 50 0 1963 Kurile Islands 8.6 0 1923 Alaska 8 .5 0 1.2.2 Deadliest Earthquakes The world’s deadliest earthquake ... North Eastern Region 32 3.4 Frequency of Earthquake 34 3 .5 Earthquake Prediction 34 3.6 Earthquake Hazard zonation, Risk Evaluation and Mitigation 35 3.7 Earthquake Resista...

Ngày tải lên: 07/08/2014, 04:21

... 3.3 × 3.3 6.0 10 × 10 6 .5 16 × 16, 25 × 10 7.0 40 × 20, 50 × 15 7 .5 140 × 15, 100 × 20, 72 × 30, 50 × 40, 45 × 45 8.0 300 × 20, 200 × 30, 150 × 40, 1 25 × 50 2.3.1 Fault Structure Although the ... deformation within them. Introduction to Geotechnical Earthquake Engineering 7 The sequence concluding with a large earthquake in Kashmir in 155 5. The central Himalayan earthqua...

Ngày tải lên: 07/08/2014, 04:21

... the 28 Basic Geotechnical Earthquake Engineering Fig. 2.19 Acceleration, velocity and displacement versus time recorded during San Fernando earthquake (Courtesy: Day, 2002) The geotechnical earthquake ... “Mega Earthquake in the northeast by 2010. The prediction has been made on the basis of theory of cyclical earthquakes. Sarmah (1999) calculated an average return period of 55...

Ngày tải lên: 07/08/2014, 04:21

... + 25) d (5. 1a) a = (2, 154 ,000)(r) –2.10 (5. 1b) b = (0.046)+(0.4 45) log(r) (5. 1c) d = (2 .51 5)+(0.486)log(r) (5. 1d) where, Y = peak horizontal acceleration (in gal) (1 gal = 1 cm/sec 2 ) M = earthquake ... ∆ SOIL ROCK ROCK Hypocenter Focal Depth Fault 46 Basic Geotechnical Earthquake Engineering SITE SEISMICITY, SEISMIC SOIL RESPONSE AND DESIGN EARTHQUAKE 5 CHAPTER 5. 1...

Ngày tải lên: 07/08/2014, 04:21

... Liquefaction 75 ′σ v0 = (1 .5) (18.9) + (1 .5) (9.84) = 43 kPa. Using, r d = 1 – 0.012z, with z = 3m, r d = 0.96 Also, σ σ v0 v0 ′ = 58 /43 = 1. 35 and a g max = 0.45g/g = 0. 45 Substituting the ... Magnitude scaling factors (Courtesy: Day, 2002) Anticipated earthquake magnitude Magnitude scaling factor 8 .5 0.89 7 .5 1.00 6. 75 1.13 6 1.32 5. 25 1 .50 Factor of safety against...

Ngày tải lên: 07/08/2014, 04:21

... undrained liquefied shear strength 2.0 1 .5 1.0 0 .5 0 D r = 55 – 70% D r = 45 – 50 % D r = 35% σ′ v0 ≥ 3 tons/ft 2 0 0.1 0.2 0.3 0.4 α K α 98 Basic Geotechnical Earthquake Engineering is termed as ... tan 14 = 0. 25. Also, relative density of soil = 35% . From Fig. 9.3, K α = 0 .5. Hence, factor of safety for sloping ground condition = (1. 25) (0 .5) = 0.6 25. Slope Stabili...

Ngày tải lên: 07/08/2014, 04:21

... tan 2 ( 45 φ/2) = tan 2 ( 45 16 .5) = 0.2 95, kp = 1/k A = 3.39. From 0ft to 5ft, P 1A = 0.5k A γ t (5) 2 = (0 .5) (0.2 95) (130) (5) 2 = 479.3 75 lb/ft From 5ft to 50 ft, P 2A =k A γ t (5) ( 45) + (0 .5) (k A )(γ b )( 45) 2 = ... (0 .5) (k A )(γ b )( 45) 2 = (0.2 95) (130) (5) ( 45) + (0 .5) (0.2 95) (64)( 45) 2 = 8628. 75 + 19116 = 27744. 75 lb/ft. P A =P 1A + P 2A = 479.3 7...

Ngày tải lên: 07/08/2014, 04:21

... 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 R...

Ngày tải lên: 07/08/2014, 04:21