摘要:
Precast concrete footings, stretchers, road slabs, and curbing in conveniently transportable sizes are used to construct road bridges and supporting abutments with a minimum of heavy equipment at the construction site. Each stretcher module comprises an elongated concrete body having at least two support heads with flat upper and lower surfaces for stacking one on another. All support heads are equally spaced and each contains a vertical hole for receiving a steel tie rod that extends from the footing to the top surface of the abutment for tying together the stacked stretchers. Anchor rods to deadmen and lateral tie rods interconnecting the wing walls of the abutment are connected to the vertical tie rods to form a rigid interlocked retaining structure for supporting the prestressed concrete road slabs.
摘要:
A retaining wall system including a wall portion interconnected with welded wire mat and secured in position is disclosed. The wall may be composed of a plurality of modular blocks, preferably made of concrete, having grooves into which individual wires of the welded wire mat are placed. Examples of modular blocks disclosed are concrete S, T and J-blocks. Alternately, the wall may be a concrete panel. One embodiment of the present invention employs a concrete shaft placed into the soil behind the wall and to which the welded wire mats are secured to hold the wall in place.
摘要:
A reinforced soil embankment having precast concrete face panels with cantilevered sections extending into the embankment to support the panels in an upright condition and provide a surface beneath which a wedge may be inserted to plumb the panels during erection of the embankment. Soil reinforcing elements are secured to the panels intermediate their height to reinforce the embankment and secure the face panels in place. Connectors are provided for securing the reinforcing elements to the panels by means of loops formed on the elements for extension through eyes on the panels. The connectors also serve to orient the reinforcing elements in a horizontal disposition within the embankment.
摘要:
A retaining wall for an earthen formation relies on polymer geogrids for earth reinforcement and wire trays to provide the face of the formation. The wire trays are of L-shaped with intersecting floor and face sections. Hooked extensions formed on the face sections serve to secure the trays in superimposed relationship within the retaining wall and to hold the geogrids in place against the trays. The geogrids extend distally from the trays to provide deep reinforcement of the earthen formation.
摘要:
The invention provides a method and components for producing an improved reinforced soil embankment wall. In particular, the invention provides mechanical soil reinforcements having a substantially straight center portion and a frictional bearing structure on both ends. This structure minimizes the lateral force exerted on the connection between the facing wall and the reinforcement by the downward force of the settling earth on the reinforcement by providing a straight portion for passing substantially through the zone of maximum force. Frictional reinforcement and anchoring is obtained by using a frictional bearing structure on each end of the reinforcement to reinforce the outer zones within a reinforced soil enbankment wall. Pressure on the facing wall can be further relieved either by using a sinusoidal frictional bearing structure or by connecting the reinforcement to the facing wall using a connector which can stretch or otherwise relieve tension.The invention also provides improved facing wall panels and connecting means for attaching mechanical soil reinforcements to facing walls.
摘要:
A retaining wall for an earthen formation comprising a plurality of soil reinforcing mats and a cantilevered face which is anchored in place at the foot of the formation. The mats are embedded in the formation at vertically spaced levels and secured to the face. In the preferred embodiment the face is in situ formed concrete and the mats comprise welded wire trays with end portions cast in place within the face.
摘要:
A seawall is provided by embedding perforate polymer mats within an earthen formation and securing the mats to stacked preformed concrete panels at the face of the formation. The mats are wrapped around rods and secured to the panels by capturing the rods between opposed surfaces on the panels. Seals and filter closures are disposed between the panels to shield the formation from sloughing and the intrusion of water.
摘要:
An earthen formation is reinforced against slippage by embedding welded wire grid work mats within the formation and securing the mats to precast elongate panels disposed at the face of the formation. The mats serve as anchors for the panels, as well as reinforcing means for the formation. Plural connections secure the mats along the length of at least certain of the panels.
摘要:
Precast stretchers in four basic configurations may be used to construct cribbing faces, end walls, and corners for virtually every retaining wall requirement. Each stretcher of the invention comprises an elongated body having two support heads with flat upper and lower surfaces for stacking the stetchers one on another. All the support heads are equally spaced and each head contains a vertical hole for receiving a steel tie rod that extends, in several threaded sections, from the footing to the top of the wall for tying together the stacked support heads and stretchers. Anchor rods for deadmen, bin wall anchorages, or rock bolts are connected to the vertical tie rods to form a rigid interlocked retaining structure.