Abstract: A method for ecological filling with mixed coal gangue and fly ash includes the following steps: S1: construction of a double-impermeable base layer: leveling a pit or gully, laying a fly ash-based cementitious material, compacting and curing; spraying a layer of polymer waterproof coating on a surface of the fly ash-based cementitious material, and fully curing to obtain a double-impermeable protective structure; S2: three-dimensional layered filling: dumping coal gangue and fly ash in sequence on the double-impermeable protective structure formed in S1, where the coal gangue and the fly ash are three-dimensionally layered and well graded; the coal gangue is coal gangue after coal washing, which is used as an aggregate; the fly ash is used as a filler and cementitious material to achieve a compact filling structure; and S3: rolling: rolling by a roller after the three-dimensional layered filling.

Abstract: An intelligent integrated anti-collision system and method for a pier, including: a radar sensing device disposed at the joint between the pier and a girder, image collection devices disposed around the pier, control system, hydraulic system and execution device, where the radar sensing and image collection devices transmit collected signals to the control system, which uses the hydraulic system to control the action of the execution device; the execution device is disposed at a middle part of the pier and includes a plurality of sections of steel-reinforced rubber concrete girder connected end to end through pulleys, the hydraulic system can drive the pulleys to rotate to enable the sections to be located on the same horizontal line, and an energy dissipation apparatus is disposed at the tail end of the last section to realize energy dissipation of the energy generated by impact when an object impacts the energy dissipation apparatus.

Abstract: A method of installing a header pipe joint 1 at a subsea structure 5 is provided, comprising providing a header pipe joint 1 having at least one valve 2 installed therein and connecting the header pipe joint 1 inline of a spool 15 or pipeline 18 prior to lowering the header pipe joint 1 to the subsea structure 5. The header pipe joint 1 is then lowered to the subsea structure 5, and the valve 2 is connected to the subsea structure (e.g. a subsea production system of the subsea structure such as a xmas tree) with a connection bridge e.g. a choke bridge 14. This provides a fluidic connection between the subsea structure and the header pipe joint. The subsea structure 5 comprises a foundation, e.g. suction anchors 11, which provide support for both a wellhead and the header pipe joint. A subsea assembly comprising a subsea structure 5, header pipe joint 1 and connection bridge 14 is also provided.

Abstract: Embodiments described herein relate to construction of subsurface structural elements that are configured to redirect soil forces. For instance, a form may be used to construct a subsurface structural element such that the subsurface structural element redirects soil forces to vertically displace a foundation rather than have the soil forces crack or otherwise damage the foundation.

Abstract: Disclosed embodiments include a suction pile vent plug having a cylindrically-shaped body having a sealing element, a plurality of coupling features, and a handle connected to the cylindrically-shaped body. The sealing element is configured to form a watertight seal with walls of a suction pile vent into which the vent plug is installed. The plurality of coupling features are configured to engage with corresponding coupling features of the suction pile vent. The movable handle is configured to be moved into one or more locked configurations. Disclosed embodiments further include a suction pile vent having a hollow cylindrically-shaped body having coupling features. The coupling features are configured to engage with corresponding coupling features of a suction pile vent plug to thereby mechanically couple the suction pile vent plug to the suction pile vent. Disclosed embodiments further include a fluidic port that fluidically couples a suction pile to a removable fluidic coupling.

Abstract: A rapid construction device for a prestressed basalt fiber anchor rod, includes a sleeve drill rod and a drill bit; the sleeve drill rod includes an inner and an outer cylinders; a middle of the drill bit is connected to a lower end of the inner cylinder, an edge of the drill is connected to a lower end of the outer cylinder, a constraint hole is defined in the middle of the drill bit for allowing a basalt fiber reinforced plastic (BFRP) penetrating therethrough, a magnetic baffle is arranged at a lower end of the constraint hole to shield the constraint hole, and a plurality of through holes are defined in the drill bit; and the BFRP is pushed to push off the magnetic baffle to lower the BFRP to a set position, and then a space between the inner and outer cylinders is grouted.

Abstract: Provided is a combined suction anchor reinforced by a grouting spiral anchor, including a gravity suction anchor, an L-shaped skirt board and a spiral anchor. The gravity suction anchor includes a suction anchor top plate and a wall of a suction anchor barrel body and uses a concrete press block to reach an estimated set position faster during penetration due to self-weight thereof. Thereafter, the skirt board is lifted to outside of the suction anchor through a lug, and a fixing bolt is used to connect the skirt board to the suction anchor. The spiral anchor rod passes through a skirt board hole performed in the skirt board to penetrate into a deep site of seabed, and concrete is grouted through the skirt board hole to a seabed soil area loosened due to penetration of the spiral anchor rod, thereby forming a concrete reinforced area after the concrete solidifies.

Abstract: The present disclosure relates systems and methods involving movable/adjustable guardrails. An example system includes a frame weldment and a rail assembly attached to the frame weldment. The rail assembly includes a first post and a second post. The base portion of the first post is rotatably coupled to a first pivot point of the frame weldment and the base portion of the second post is rotatably coupled to a second pivot point of the frame weldment. The system also includes a top rail rotatably coupled between a top portion of the first post and a top portion of the second post. The system yet further includes an actuator configured to controllably adjust a configuration of the rail assembly between an extended configuration and a retracted configuration with respect to the frame weldment.

Abstract: A method for forming a foundation wall of a building structure having a building frame seated on the foundation, the method including coupling each of a plurality of elongated vertical members to a floor of the foundation and the building frame so that each of the vertical members extend between the floor and the building frame adjacent to an existing foundation wall, providing at least one elongated horizontal member through apertures of the vertical members such that the horizontal member extends between and passes through respective ones of the vertical members, coupling panels to the horizontal member so as to form, with the vertical members and the horizontal member an integrated self-supporting formwork which, with the existing foundation wall forms a cavity, having disposed therein, the vertical members and the horizontal member, and flowing concrete into the cavity so as to fill the cavity around the vertical members and horizontal member disposed within the cavity.

Abstract: Flexible containment tubes form sections of a dike for fluid containment. For example, multiple vinyl-coated polyester tubes with a 19-inch diameter may be filled with water and stacked on top of each other to create a temporary diversion dike. Multiple sections of dike may be abutted together to form longer sections of dike. A vapor barrier or plastic membrane may wrap over dike sections and/or weaved through the flexible containment tubes as they are placed prior to filling. Configurations of the vapor barrier and associated anchoring mechanisms improve the utility of dike sections by reducing hydrostatic pressure of contained fluid on the dike, harnessing the weight of fluid columns, and mitigating seepage through the dike sections.

Abstract: A hybrid permanent anchor is proposed. The hybrid permanent anchor includes: a fixed body disposed between a compression part and a tension part and coupling the compression part and the tension part to each other; the tension part coupled to a front end of the fixed body and transmitting tension to the permanent anchor when tensile stress is generated; the compression part coupled to a rear end of the fixed body and transmitting compressive force to the permanent anchor when compressive stress is generated; a PC steel strand coupled to a rear end of the compression part and having a protective pipe thereon; and an anchor head part fixing the permanent anchor to a structure.

Abstract: Disclosed is a method of constructing an underwater concrete block structure, including: fabricating a plurality of concrete blocks having a vertical hole extending in the vertical direction; forming a foundation concrete block structure by installing the concrete block on the seafloor; vertically installing at least one guide pole in the foundation concrete block structure; forming a concrete block stack by repeating a process of positioning the concrete block to be installed above the surface of the water; and forming a main concrete column for binding the plurality of concrete blocks.

Abstract: A movable platform adjacent to a stationary platform and operable between a raised position forming a part of a deck surface and a lowered position at least partially submerged in the body of water. A landing section and walkway section included in the movable platform. A lever arm carried by the landing section and extending underneath the walkway section, wherein the lever arm engages a bottom side of the walkway section when the movable platform is in the raised position, and the lever arm disengages from the walkway section when the movable platform is in the lowered position. A floatation unit disposed on the bottom side of the landing section. An air pump unit carried by the stationary platform, wherein the air pump unit channels air into and out of the floatation unit to change the buoyancy of the floatation unit to raise and lower the movable platform.

Abstract: A pile includes a shaft; and a soil displacement head or a helical blade with a leading edge and a trailing edge, operatively connected to a first end of the shaft; the shaft having deformations formed thereon to provide a gripping interface between a supporting medium and the shaft.

Abstract: A method of recovering a used pipeline from the seabed to the surface comprises attaching a recovery cap to the pipeline at the seabed to surround an end of the pipeline, and then upending at least an end portion of the pipeline underwater suspended beneath the recovery cap. While the upended pipeline is being lifted toward the surface, hydrocarbon contaminants rising buoyantly from the interior and walls of the pipeline are captured within the recovery cap, floating on water within and surrounding the pipeline. The captured contaminants are then conveyed from the recovery cap to a reservoir that is external to the recovery cap. The reservoir can be lifted toward the surface with the upended pipeline, for example, on a lifting line attached to the recovery cap. The reservoir can expand as it fills with contaminants and as hydrostatic pressure decreases, with gas from the contaminants being vented off.

Abstract: The present disclosure relates to a vibro-hammer 1 connected to heavy construction equipment, and more particularly, a vibro-hammer 1 having a side grip in which vibrations are prevented from being transmitted to a connected heavy equipment machine to avoid a problem such as a change in a perforation position, the vibro-hammer 1 is firmly connected to a perforated pile to transmit vibrations generated in a gear box to the perforated pile through the side grip and improve workability, arms are gear-coupled to each other to prevent the arms and the side grip from being released from each other due to frequent vibrations, a pair of arms and the side grip can come into close contact with the perforated pile or separated from the performed pile by a single cylinder, the side grip can be easily replaced according a shape of the perforated pile, and applicability and workability is improved.

Abstract: The invention relates to a pile installation system for providing a pile in the ground, comprising; an elongate pile installation tool for forming a bore hole and having a distal end, an end member for coupling to the distal end of the pile installation tool, and an electromagnetic device for releasable magnetically coupling the end member to the pile installation tool.

Abstract: A basalt fiber anchoring system with accurate sectioned grouting includes: a plurality of first base plates arranged in an anchoring borehole, where every two first base plates are arranged at an upper end and a lower end of a section to be grouted respectively; a plurality of basalt fiber reinforced plastics (BFRP) penetrating the plurality of first base plates; and a grouting device including a valve pipe and a grouting core pipe, where the valve pipe penetrates all the first base plates, a plurality of grouting ports are defined in a pipe wall of the valve pipe, each of the plurality of grouting ports is covered with an elastic sheath, the grouting core pipe is sleeved with two grout stop sealing plugs at intervals, a plurality of grout outlets are provided between the two grout stop sealing plugs.

Abstract: An apparatus for removable insertion into an excavated trench to protect a worker against collapse of the trench wall, which is often termed in industry as a trench shield or cage or box, comprises cross members interconnecting opposite sides of a protective peripheral wall that are in the form of rounded annuluses. Additional members are provided to interconnect adjacent pairs of annuli which are spaced one from the other in a height direction of the wall. This forms an interconnected internal frame of the apparatus which primarily provides compressive strength of the apparatus against collapsing of the trench wall instead of the protective wall so that the protective wall may be made to be lighter in terms of mass. Further, the protective peripheral wall forms a tube substantially fully enclosing a working area defined by the wall.

Abstract: Embodiments of the present disclosure relate to a system for reinforcing compressible soil strata. The system comprises at least one helical rigid-inclusion comprising a elongate body, a top member secured to one end of the elongate body, and at least one lower helically-formed member secured to the end of the elongate body opposite to the top member, and a load transfer platform configured to transfer at least a portion of a load from an overlying surface to the helical rigid-inclusion. Embodiments of the present disclosure also relate to methods of installing the system for reinforcing compressible soil.