Geotechnical Engineering

DHARM 840 GEOTECHNICAL ENGINEERING (b) Forced Vibration test. A mechanical oscillator is mounted on a concrete block in such a m ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 841 The relevant aspects with regard to the design of machine foundation ...

DHARM 842 GEOTECHNICAL ENGINEERING (a) Block-type (b) Box or caisson type (c) Wall type (d) Framed-type Fig. 20.26 Types of mach ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 843 From the practical point of view, the following additional requireme ...

DHARM 844 GEOTECHNICAL ENGINEERING Soil Ms Boundary of vibrating soil Machine Foundation M Mf Fig. 20.27 Machine foundation-soil ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 845 Quinlan (1953) and Sung (1953) gave independently mathematical solut ...

DHARM 846 GEOTECHNICAL ENGINEERING 20.5 FOUNDATIONS FOR RECIPROCATING MACHINES Reciprocating engines having crank-type mechanism ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 847 Designating the total reciprocating mass which moves with the piston ...

DHARM 848 GEOTECHNICAL ENGINEERING inertial force. Generally speaking, the contribution to the total inertial force from the sec ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 849 It may be noted that the peak values of the inertial forces in this ...

DHARM 850 GEOTECHNICAL ENGINEERING which may be of timber grillage or cork. The foundation may be placed directly on soil or on ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 851 Table 20.4 Thickness of timber pads under anvil (after Major, 1962) ...

DHARM 852 GEOTECHNICAL ENGINEERING Pine : 20,000 to 25,000 kN/m^2 Larch : 15,000 to 20,000 kN/m^2 20.6.4 Velocity of Anvil The v ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 853 where λa = M M a t ...(Eq. 20.95) This analysis is applicable for a ...

DHARM 854 GEOTECHNICAL ENGINEERING and k 2 = spring constant of elastic pad. Also k 1 = Cu′A 1 ...(Eq. 20.99) and k 2 = EA t pp ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 855 The differential equations of motion (Eq. 20.98) may be solved for t ...

DHARM 856 GEOTECHNICAL ENGINEERING In this connection Barken gives the following equation: Cu′ = kcCu ...(Eq. 20.110) where Cu′ ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 857 where nf = ratio of the weight of the foundation (Wf) to that of the ...

DHARM 858 GEOTECHNICAL ENGINEERING Table 20.7 Minimum thickness of foundation (after Major, 1962) Weight of hammer (kN) Minimum ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 859 Passive isolation is also called ‘motion or amplitude isolation’, si ...