Abstract:
A control system for controlling the operation of a plurality of modular lifting units (12). The control system includes a power source (20) for providing power to each of the modular lifting units (12). A main control box connected between the power source (20) and the modular lifting units (12), comprises a mode switch (28) for switching the system between two control modes: a group mode, in which the plurality of modular lifting units (12) is controlled synchronously as a group; and, an individual mode, in which any one of the modular lifting units (12) is controlled independently of the other units. In group mode, synchronous movement of the modular lifting units is achieved by setting each unit to run at the same speed. The control system may also comprise one or more power extension control boxes (PECBs) (13) connected between an additional power source and a plurality of additional modular lifting units
Abstract:
The invention relates to a method for condensing, filling, or replacing soil and/or for lifting structures. The method comprises providing the soil (2) or the structure (1) with a hole, and arranging into the hole an injection bar (4) having a fillable expansion element (5) in connection therewith. A substance (8) which expands as a consequence of a chemical reaction is injected into the expansion element (5) along the injection bar (4). A force pressing the expansion element (5) against the soil (2) is generated by the chemical reaction, which expands the substance (8) injected into the expansion element (5). After the injected substance (8) has reacted, a re-injection route (9) is opened and more of the substance is injected into the same expansion element (5) and/or the substance is injected by using the same injection bar (4).
Abstract:
A method of raising a building (1) with respect to the ground (2); the method including the steps of : forming a mat (7) having a number of through holes (12); inserting a foundation pile (9) through each hole (12); fitting each foundation pile (9) with a lifting device (11); exerting thrust on the foundation piles (9) by means of the lifting devices (11) to raise the building (1) with respect to the ground (2); and fixing each foundation pile (9) axially to the mat (7) once the building is raised; the lifting devices (11) are divided into three equivalent, symmetrical, independent work groups; and the lifting devices (11) of one work group at a time are activated simultaneously, so that the building (1) is raised isostatically, by simultaneously activating the lifting devices (11) of one work group at a time, while the lifting devices (11) of the other two work groups are left idle.
Abstract:
An apparatus (10) and a method (30, 40) are provided for lifting and leveling an existing building (100). At least a first non-cylindrical support section (12) having a substantially rectangular shape and first and second ends is located within the earth (7) at a position underneath the existing building (100). A cap support section (13) is placed in contact with the second end of the first non-cylindrical support section (12). A jack (73/74) is disposed on the upper side of the cap support section (13) and raised until the foundation (96) of the existing building (100) has been lifted to a desired height. The non-cylindrical support section (12) has low bearing and high friction characteristics. The low bearing characteristics enable the apparatus (10) to be driven further into the earth (7) than cylindrical pilings that are commonly used to lift and level existing buildings (100). The high friction characteristics assist in maintaining the stability of the apparatus (10) once installed.
Abstract:
A system and method of repairing or reinforcing an existing structure using a reaction force of pressurizing means are provided. In a state in which structure supporting means, such as a steel pile, is pressed fit into the ground located under an existing structure to reach a predetermined rigid bearing layer, and the existing structure is lifted by the structure supporting means, a target portion for repair or reinforcement can be repaired or reinforced, irrespective of the construction site or space, without causing any harmful environmental impact.
Abstract:
A device for lifting a framework (65) and any construction supported thereon, particularly a roof, away from subjacent walls. A number of such devices (63) may be distributed around the framework (65) and each device comprises a wall-engaging plate (1) attachable to a wall (3). Means (64) for guiding a bracket (76) engageable with the framework (65) and controlled means (108) for pushing said bracket (76) are connected to said plate by common means (42) that hold said means in identical positions. The device is particularly suitable for lifting two- or four-pitched roofs, floors or exposed frameworks by suitably adapting the brackets (76).
Abstract:
A building system for fabricating a multi-storey building structure, the system comprising at least one first building structure and at least one second building structure and means for elevating the second building structure to allow provision of the first building structure under the elevated building structure. A method for fabricating a multi-storey building structure, the method comprises the steps of providing a second building structure; elevating the second building structure; providing a first building structure under the elevated second building structure; and lowering the second building structure onto the first building structure. There is also provided the elevating means, such as jacks for elevating the building structure.
Abstract:
A lifting and shoring jack assembly includes a main support assembly having a main column (3), a jack screw (4) slidably mounted within the main column, and a jack nut (5) engaged with the jack screw and bearing on the end of the main column. A load plate (6) mounted at the free end of the jack screw (4) facilitates engagement of the jack assembly with a load to be supported. Extensible side braces (7) are pivotally mounted on the main column (3), and also include load engaging plates (6A) for load-bearing attachment to the load to be supported.
Abstract:
In order to increase the vertical distance between the roof truss (1) and the top ceiling (2) of a building so that a habitable attic may be created, the roof truss (1) is detached from the building, lifted up as a single piece in its totality by means of lifting units (6) and guided in the lifting direction by guiding elements (18) which act as supports for the lifted roof truss at least until the outer walls of the building are sufficiently raised to bear the roof truss.
Abstract:
A method of lifting storage tanks by using pressurized bags (12) and support members (22). Lifting the tank allows for visual inspection under the tank for corrosion to prevent leakage of environmentally hazardous chemicals stored in the tank. The lifting bags (12) are placed under the tank (10), inflated, and support timbers (22) placed under the raised tank. The bags are then deflated allowing the tank to rest on the support timbers. The deflated bags raised by placing support timbers under the bags. The bags are again pressurized further raising the tank. The steps are repeated until the tank is lifted to the desired height. Ground suction is broken by raising one side of the tank with the lifting bags, placing supports as far as possible under the tank rim and depressurizing the bags to rock the other side of the tank off the ground. A fulcrum method is also applied to use the partial weight of the tank as a leverage force to alternately raise opposite sides of the tank.