초록 ▼

An earth retention system constructed with a top-down process that can be used for permanent below-grade structures, similar to a “soldier beam and lagging wall,” consists of vertical soldier piles, drainage and waterproofing, and a finished, reinforced concrete facing. The concrete facing is placed

An earth retention system constructed with a top-down process that can be used for permanent below-grade structures, similar to a “soldier beam and lagging wall,” consists of vertical soldier piles, drainage and waterproofing, and a finished, reinforced concrete facing. The concrete facing is placed pneumatically (i.e., using so-called shotcrete). The system is well-suited to constructing below-grade portions of buildings where excavation lay back is not practical or cost effective and can incorporate permanent lateral support from tieback anchors. The below-grade structure is constructed by excavating down part way, constructing a waterproof “lift” portion of the ultimate structure, excavating down another part way, constructing another waterproof lift portion in a manner to be tied in with the lift portion immediately above, and repeating these steps until the below-grade structure is constructed to the desired depth.

대표청구항 ▼

1. A method of constructing a waterproof foundation wall system in the ground, the method comprising the steps of: (1) installing a series of spaced-apart vertical structural steel beams in the ground; and(2) beginning at a first level of the structural steel beams and working downwardly, making the

1. A method of constructing a waterproof foundation wall system in the ground, the method comprising the steps of: (1) installing a series of spaced-apart vertical structural steel beams in the ground; and(2) beginning at a first level of the structural steel beams and working downwardly, making the foundation wall in multiple horizontal sections, one horizontal section at a time from top to bottom, each horizontal section made by:(a) excavating soil between 4 and 8 feet to provide a limited excavated space for constructing a portion of a concrete wall;(b) positioning a waterproof cladding in the excavated space; and(c) constructing a concrete wall portion spanning the vertical structural steel beams such that the waterproof cladding is positioned against the concrete wall portion. 2. The method of claim 1 further comprising the step of constructing an outer wall in the excavated space and spanning the vertical structural steel beams, and wherein the step of positioning the waterproof cladding comprising applying the waterproof cladding against the outer wall, such that when the concrete wall portion is constructed, the waterproof cladding is sandwiched between the concrete wall portion and the outer wall. 3. The method of claim 1 wherein the step of excavating soil comprises excavating down between about 5 and 6 feet to provide a limited excavated space for constructing a portion of a concrete wall. 4. The method of claim 1 wherein the step of constructing the concrete wall portion comprises positioning steel reinforcing bars and then surrounding the steel reinforcing bars with liquid concrete. 5. The method of claim 4 wherein the step of surrounding the steel reinforcing bars with liquid concrete comprises spraying liquid shotcrete. 6. The method of claim 4 wherein the step of positioning steel reinforcing bars comprises welding shear studs to the vertical steel beams at regular intervals and supporting a grid of steel reinforcing bars upon the shear studs. 7. A method of constructing a waterproof foundation wall system in the ground, the method comprising the steps of: (1) installing a series of spaced-apart vertical structural steel beams in the ground; and(2) beginning at a first level of the structural steel beams and working downwardly, making the foundation wall in multiple horizontal sections, one horizontal section at a time from top to bottom, each horizontal section made by:(a) excavating soil between 4 and 8 feet to provide a limited excavated space for constructing a portion of a concrete wall;(b) positioning a waterproof cladding in the excavated space; and(c) constructing a concrete wall portion spanning the vertical structural steel beams such that the waterproof cladding is positioned against the concrete wall portionwherein the step of excavating soil comprises excavating a continuous shallow trench about 1 to 2 feet deep at the bottom of the excavation adjacent to where the wall is being constructed to allow vertical overlapping of drainage, waterproofing and reinforcing steel from one horizontal section to another. 8. The method of claim 7 further comprising the step of constructing an outer wall in the excavated space and spanning the vertical structural steel beams and wherein the step of constructing an outer wall comprises installing a concrete lagging wall, and the method further comprises installing a prefabricated drainage composite material behind the concrete lagging wall to prevent the build-up of excess hydrostatic pressure behind the concrete lagging wall, and wherein the prefabricated drainage composite material is placed more or less continuously over the excavated earth face adjacent the concrete lagging wall and extends below the base of the horizontal wall section into the shallow trench to allow it to lap behind the next horizontal wall section. 9. A method of constructing a waterproof foundation wall system in the ground, the method comprising the steps of: (1) installing a series of spaced-apart vertical structural steel beams in the ground; and(2) beginning at a first level of the structural steel beams and working downwardly, making the foundation wall in multiple horizontal sections, one horizontal section at a time from top to bottom, each horizontal section made by:(a) excavating soil between 4 and 8 feet to provide a limited excavated space for constructing a portion of a concrete wall;(b) positioning a waterproof cladding in the excavated space; and(c) constructing a concrete wall portion spanning the vertical structural steel beams such that the waterproof cladding is positioned against the concrete wall portion;the method further comprising the step of constructing an outer wall in the excavated space and spanning the vertical structural steel beams;wherein the step of constructing an outer wall comprises installing a concrete lagging wall, and the method further comprises installing a prefabricated drainage composite material behind the concrete lagging wall to prevent the build-up of excess hydrostatic pressure behind the concrete lagging wall.