摘要:
Method of pouring a concrete wall panel directly in the ground, into which two concrete bars (1 and 2) are poured at an interval in such a way that the axis of the future wall will intersect their midpoint at a right angle, characterized by digging a trench extending through the bars, by positioning in the trench a reinforcement (13) with a transverse partition (9) generally along the axis of each bar, and by pouring a concrete panel in the trench between the two transverse partitions.
摘要:
A concrete water retaining wall is formed by driving a plurality of concrete cylinder piles into the earth in closely spaced relationship along a line. Thereafter, elongated tubular flexible bags are inserted down into the spaces between adjacent cylinder piles and a cementitious hardenable material, such as grout, is pumped into the bags to expand them and to form a filler having an hourglass shaped cross section which interlocks with and forms a seal between adjacent piles.
摘要:
Disclosed is an improved fixed offshore platform and method of erecting the same. The platform has an open truss structure with upper and lower deck levels. The upper deck has removable floor sections to allow installation of equipment down through the truss structure. The platform is provided with pads for mounting equipment and housing in modules on the deck. No flotation is provided in the platform and means are provided for supporting the platform on the deck of a simple barge. The platform is generally triangular in shape having three caisson legs with one leg enlarged to allow drilling therethrough. Jacks are provided for gripping the legs and a crane is mounted on the deck to move along tracks provided thereon. In erecting the platform, the platform is first barged to the location of installation on a simple barge with the legs in a vertically-extending position and the platform in its normal operating position with the crane thereon. The barge is moored in position over a well site. At high tide, the legs are dropped and locked in position. As the tide subsides, the barge is floated from under the platform leaving the platform supported by the legs and the jacks. Next, the platform is jacked up to the desired height of use. Pilings are driven through the legs by use of the deck mounted crane. The legs are then grouted in place and welded to the platform. The jacks are removed from the legs and the equipment modules are installed. Drilling can then be accomplished through the enlarged leg.
摘要:
There is disclosed an improved method of constructing an undergound reinforced concrete wall utilizing the slurry trench excavation method. According to the invention, at least a pair of spaced elongated primary excavations each adapted to receive a pair of H-beams rigidly joined together by steel lattice work; and a rebar cage. The channel or space in each H-beam at the outer channel between the flange and webs is filled with a polystyrene foam attached to the cage by steel plates and angles. These elements are lowered into the primary excavations and concrete is poured therein filling the spaces in the excavations and displacing any bentonite slurry from the trench to form primary wall elements. Thereafter, intermediate excavations are performed between the concreted sections and the H-beam portions thereof, the polystyrene foam being easily removed from the outer channel and the H-beam channel with the flanges thereof serving as guide elements for the excavating tool. According to a preferred procedure, the spaces between the first two primary wall panels have a length at least equal to a multiple greater than one of the primary wall panel excavations for secondary wall elements to be formed in the intermediate space. In this way, the same excavating tool can be used for forming equally spaced elements and the excavating tool will not in any way be impeded by engagement with steel H-beams since at least one end of the tool will be free to bite into earth or the space of an adjacent excavation. In order to form a reinforced excavation around and below underground utilities, and other obstructions, the earth between the two previous excavations is excavated, two beams are placed on either side of the utility or obstruction and the intervening excavation panel is cast with concrete without the use of a reinforcing cage or is cast using a steel fiber reinforced concrete in place of the reinforcing, is inserted to thereby form a reinforced wall in combination with the H-beam. There is also disclosed a novel method and apparatus for reducing wall thickness and decorating and improving surface finish of cast-in-situ underground concrete walls.
摘要:
An embankment shoring structure is made up of a number of vertical prefabricated reinforced concrete panels having vertical stiffening ribs on their inside faces and anchored to a concrete foundation cast on site by a bed of cast reinforced concrete, the lower end of each rib terminating in a face inclined to the horizontal through which the reinforcing rods of the panels pass into the bed.
摘要:
A process of constructing a storage facility, such as a tank, and the resultant storage facility product having an integral foundation is disclosed. Piles having conjoining sides are driven into the earth along a storage facility perimeter and pressure grouted to form a watertight perimeter. The piles penetrate into the earth to a depth where either the percolation of any acquifier into the storage facility or the leakage of product from the storage facility can be prevented. After installation of the piles. Soil is thereafter excavated below the existent ground level from the interior of the closed pile perimeter to the storage facility depth. The excavated soil is placed in a preferably compacted embankment immediately exterior of the piles perimeter where it extends above the ambient ground level. This compacted embankment together with the subterranean portion of the pile perimeter is maintained in a closed fluid-tight relation by the soil pressure arching adjacent piles compressively together. During excavation, wales are placed against the storage facility sides. When the excavation reaches the full tank depth, the tank bottom is finished typically by a concrete rat slab. A conventional top is then provided.
摘要:
This disclosure relates to a lining apparatus for the protection of trenches, which lining apparatus includes lining plates which are insertable in pairs in vertical sliding carriers on the side of the trench and are capable of being pressed against the wall of the trench by expanding devices, each lining plate including two component plates connected together loosely and detachably and the component plates being guided together in the sliding carriers with the outer dimension of the component plates being approximately equal to those of a unitary lining plate.
摘要:
This disclosure relates to a sheeting arrangement for the sheeting or shoring of a ditch or trench wherein vertical supports are driven into the ground and thereafter sheeting walls are placed between the vertical supports with the sheeting walls having relative vertical movement with respect to the supports during the positioning and pulling thereof. In order to facilitate the movement of the sheeting walls relative to the supports without undue binding or frictional resistance, it has been proposed to provide the connections between the sheeting wall and the support with bearing like elements.
摘要:
A watertight wall and method of forming a wall in the ground is provided. The wall uses a cement slurry of bentonite which will not exceed a viscosity of 20 centipoises after 48 hours of setting. Prefabricated parts are positioned in the wall after pouring and can be identically shaped.
摘要:
A CONCRETE WALL STRUCTURE AND METHOD CHARACTERIZED BY PORTIONS OF A WALE DISPOSED INTERNALLY OF THE WALL. THE WALE IS FORMED BY PREPARING A SOLDIER BEAM WITH LATERALLY EXTENDING REINFORCING ELEMENTS AND THEN CARRYING THE REINFORCING ELEMENTS INTO A TRENCH DEFINED BETWEEN UPSTANDING SOLDIER BEAMS. TREMIE-POURED CONCRETE IS THEN PLACED IN THE TRENCH.