A rapid consolidation and compaction method for densifying various layers of soils and intermediate geomaterials in a soil deposit, the rapid consolidation and compaction method comprising:
- (i) Installing porous displacement piles in at least one layer of clayey and silty soil for the rapid consolidation and densification of the at least one layer of the clayey and silty soil;
- (ii) wherein installing the porous displacement piles in the at least one layer of sandy soil for instantaneous densification of the sandy soil;
- (iii) wherein first driving a non-displacement pile comprising of a pipe section into ground;
- (iv) wherein when the porous displacement pile is a column of compacted sandy soil, driving a displacement pile comprising the pipe section attached with a removable end plate and filled with compacted layers of the sandy soil into the at least one layer of the soil or intermediate geomaterial through inside the non-displacement pile;
- (v) wherein after driving the displacement pile as described above, placing a weight or a hammer on top of the compacted sandy soil in the pipe section before pulling the pipe section out of the ground;
- (vi) wherein during pulling the pipe section of the displacement pile out of the ground, the removable end plate opens 100 percent of inside area of the pipe section;
- (vii) wherein during pulling the pipe section of the displacement pile, placing the weight or the hammer on top of the compacted sandy soil in the pipe section to continue to push the compacted sandy soil vertically downwards to fill the compacted sandy soil in the space previously occupied by the pipe section;
- (viii) wherein placing the weight or the hammer at the top of compacted soil in the pipe section to prevent necking to form in the column of the compacted sandy soil during pulling the pipe section out of the ground;
- (ix) wherein after pulling out of the pipe section of the displacement pile out of the ground, leaving the column of the compacted sandy soil in the ground;
- (x) wherein an area of cross-section of the column of the compacted soil is at least equal or more than an inside area of the pipe section;
- (xi) wherein the column of the compacted sandy soil left in the ground after pulling out of the pipe section, behaves as a porous displacement pile up to the depth up to which the pipe section of the displacement pile was driven;
- (xii) wherein when porous displacement pile is a porous reinforced concrete pile, with or without prestress, driving the porous reinforced concrete into the at least one layer of the soil or intermediate geomaterial through inside the non-displacement pile;
- (xiii) wherein when the porous displacement pile comprises of a porous pipe section with the attached end plate, driving the porous pipe section into the at least one layer of the soil or intermediate geomaterial through inside the non-displacement pile;
- (xiv) wherein when the porous displacement pile comprises of the pipe section with small holes, attached with the end plate and filled with the compacted sandy soil, driving the pipe section into the at least one layer of the soil or intermediate geomaterial through inside the non-displacement pile;
- (xv) wherein the porous displacement pile displaces and laterally forces the soil or the intermediate geomaterial away from the displacement pile;
- (xvi) wherein the porous displacement pile occupies space previously occupied by the clayey and silty soil and develops excess pore-water pressures in saturated clayey and silty soil and the excess pore-water pressures and the excess pore-water pressures in partially saturated clayey and silty soil, by pressurizing the pore-water and air present in the pores of the saturated clayey and silty soil;
- (xvii) wherein the excess pore-water pressures and pore-air pressures developed in the clayey and silty soil are rapidly dissipated by flow of the pressurized pore-water and pore-air through the porous displacement pile to the ground surface or to the sandy layer located within the ground, thereby densifying the clayey and silty soils;
- (xviii) wherein the porous displacement pile occupies the space previously occupied by the sandy soil reducing volume of voids of the soil matrix and densifying the sandy soil instantaneously;
- (xix) wherein in the sandy soil, the excess pore-water pressures do not develop and if develop, dissipate immediately;
- (xx) wherein the porous reinforced concrete piles, the porous pipe sections with the attached end plate and the pipe sections with small holes and the attached end plate and filled with the compacted sandy soil will not require pulling the porous reinforced concrete pile and the pipe sections out of the ground;
- (xxi) wherein installing a plurality of the porous displacement piles spaced apart in a grid pattern in the entire area requiring densification;
- (xxii) wherein installing the porous displacement piles either vertically or at a batter.