No abstract

This method is a new counter measure system for sand liquefaction. The principal purpose of this method is based on promoting drainage. The slender polyethylene pipes used in this type of drainage are 10 centimeters in diameters with many small holes, in the body of the pipe. These pipes burned into the ground at intervals of 80 to 130 centimeters, surrounding the foundation of structures. When the excess pore water pressure builds up during earthquakes, pore water flows into the pipes. As a reasult, build-up of excess pore water pressure can be reduced .

No abstract

This paper describes an analytical model for predicting the load-displacement relationship of structures with embedded foundations subjected to horizontal loads. The proposed analytical model uses discrete springs to represent soil resistance (passive resistance, side friction, and base friction) and considers nonlinear behavior using a hyperbolic function based on tests conducted by the authors. A method of estimating the initial tangent modulus of the hyperbola is also presented. Numerical analyses are carried out using the proposed model for two horizontal loading tests on actual caissons assumed to represent the basement of a building. The analytical results are in reasonably good agreement with the measured results.

This method is a new counter measure system for sand liquefaction.The principal purpose of this method is based on promoting drainage. The slender polyethylene pipes used in this type of drainage are 10 centimeters in diameters with many small holes, in the body of the pipe . These pipes burned into the ground at intervals of 80 to 130 centimeters, surrounding the foundation of structures. When the excess pore water pressure builds up during earthquakes, pore water flows into the pipes. As a reasult, build-up of excess pore water pressure can be reduced .-59-