Abstract:
A construction method of fast-setting polymer grouting for rapid control of slope erosion and landslide. This solution includes a landslide control method and a slope erosion control method: sorting out an operation platform; drilling and grouting of polymer high-pressure jet grouting piles on the diseased slope; drilling a row of grouting water interception holes densely on the rear edge of the diseased slope; drilling, on the operation platform, a plurality of anchor holes on the diseased slope; inserting a ground anchor into each anchor hole and performing polymer grouting to form a polymer anchorage body; laying a steel wire gauze on the surface of the diseased slope, and connecting and fixing the steel wire gauze with the tail end of each ground anchor; spraying a two-component expandable polymer grouting material onto the steel wire gauze to form a polymer anti-scour layer; drilling a plurality of planting holes on the diseased slope with a backpack drill through meshes of the steel wire gauze; and filling each planting hole with grass seed mixed nutrient soil. The present invention has the advantages of short construction period, ecological and environmental protection, convenient construction, high strength and strong scour resistance.
Abstract:
A system and process for installing in-ground base and basketball systems allows the systems to be installed without needing to wait for concrete to cure. During installation, concrete is poured and anchor bolts are positioned in the wet concrete, a brace is placed over the upper face of the concrete base and the protruding anchor bolt ends. The brace includes a plurality of outwardly extending lateral legs. The legs extend horizontally beyond the edges of the concrete base and into/over the adjacent ground. A stake is placed through each leg. The basketball goal system is then mounted to the anchor bolts and brace. The brace assists in holding the basketball goal system in the correct position while the concrete cures.
Abstract:
A method for anchoring a device in multilayer soil includes analyzing the soil to determine the depth, hardness and density of at least two layers of soils. The anchoring device is prepared for positioning by attaching a self-drilling bit to a bottom end of a hollow rod, attaching a drilling disc to the rod at a position above the self-drilling bit, attaching at least one helical disc to the rod above the drilling disc, and attaching a positioning plate to the rod at a distance from the drilling disc such that the distance from the bottom of the drilling disc to the bottom of the positioning plate is approximately equal to the depth of a first layer of soil. The anchoring device is drilled into the soil until the drilling disc rests on top of the second layer and the positioning plate rests on top of the first layer.
Abstract:
A system and method provides for repair/reconstruction of bridge and culvert constructions. Geosynthetically confined soils are used in combination with soil nails. The soil nails provide additional tensile strength below the areas reinforced with the geosynthetically confined soils. The soil nails may include both horizontal and vertical soil nails. Various forms of vertical tensioning support can be provided to include soil nails, micro-piles, sheet piling, and the like. The confined soils are installed at locations under and adjacent to the man made constructions, and can be provided in both symmetrical and asymmetrical configurations. For bridge constructions, the confined soils may be installed at a desired depth under the bridge girders, and under other primary support members of the bridge. Horizontal nails may be installed under and adjacent to the confined soils. According to the method, incremental excavation can take place so that the manmade construction being repaired may remain partially open to accommodate public travel or other intended uses, thereby limiting the impact of the repair/reconstruction effort.
Abstract:
A system and method provides for repair/reconstruction of bridge and culvert constructions. Geosynthetically confined soils are used in combination with soil nails. The soil nails provide additional tensile strength below the areas reinforced with the geosynthetically confined soils. The soil nails may include both horizontal and vertical soil nails. Various forms of vertical tensioning support can be provided to include soil nails, micro-piles, sheet piling, and the like. The confined soils are installed at locations under and adjacent to the man made constructions, and can be provided in both symmetrical and asymmetrical configurations. For bridge constructions, the confined soils may be installed at a desired depth under the bridge girders, and under other primary support members of the bridge. Horizontal nails may be installed under and adjacent to the confined soils. According to the method, incremental excavation can take place so that the manmade construction being repaired may remain partially open to accommodate public travel or other intended uses, thereby limiting the impact of the repair/reconstruction effort.
Abstract:
A wind turbine tower arrangement (10), having: a concrete tower (12) including an upper portion(14) and a base portion (16); a footer (22) beneath the base portion; a plurality of tendons (30), each tendon spanning an entire height of the concrete tower, at least a portion of each tendon arranged external to concrete (42) forming the concrete tower, and each tendon is pre-stressed to provide compressive force to the concrete in the concrete tower; and a plurality of pilings (28). The tendons are secured by the plurality of pilings.
Abstract:
A subsurface support comprises a soil nail having an outer member and an inner member placed within the outer member. Features are provided to maintain a uniform spaced relationship between the inner and outer members. The spaced relationship may be achieved by crimping the outer member, or by use of an insert installed between the inner and outer members. In another embodiment, the support is made of composite construction materials, and having a self-drilling capability. The outer member may be fiberglass, and a metallic drill bit may be secured to a distal end of the soil nail. The inner member is preferably steel. A method is also provided to improve pull-out capacity by galvanizing the inner and outer members.
Abstract:
A reinforcing system for a guy anchor used in a guyed or additionally guyed tower includes a concrete structure formed around the guy anchor. The concrete structure has a top surface slightly above grade level. The reinforcing system further includes a supplemental anchor shaft. The supplemental anchor shaft is attached to the existing anchor head and extends down into the concrete structure, where it is retained and encased therein. The concrete structure preferably has a base and at least one wall that extends down from the base and has a surface that faces the tower to resist horizontal forces. The reinforcing system is sufficiently strong to keep the guy anchor in place even if the original anchor shaft completely corrodes. The supplemental anchor shaft does not generally come into contact with soil. It therefore resists corrosion and is expected to provide a long service life.
Abstract:
A reinforcing system for a guy anchor used in a guyed or additionally guyed tower includes a concrete structure formed around the guy anchor. The concrete structure has a top surface slightly above grade level. The reinforcing system further includes a supplemental anchor shaft. The supplemental anchor shaft is attached to the existing anchor head and extends down into the concrete structure, where it is retained and encased therein. The concrete structure preferably has a base and at least one wall that extends down from the base and has a surface that faces the tower to resist horizontal forces. The reinforcing system is sufficiently strong to keep the guy anchor in place even if the original anchor shaft completely corrodes. The supplemental anchor shaft does not generally come into contact with soil. It therefore resists corrosion and is expected to provide a long service life.
Abstract:
A reinforcing system for a guy anchor used in a guyed or additionally guyed tower includes a concrete structure formed around the guy anchor. The concrete structure has a top surface slightly above grade level. The reinforcing system further includes a supplemental anchor shaft. The supplemental anchor shaft is attached to the existing anchor head and extends down into the concrete structure, where it is retained and encased therein. The concrete structure preferably has a base and at least one wall that extends down from the base and has a surface that faces the tower to resist horizontal forces. The reinforcing system is sufficiently strong to keep the guy anchor in place even if the original anchor shaft completely corrodes. The supplemental anchor shaft does not generally come into contact with soil. It therefore resists corrosion and is expected to provide a long service life.