The present invention relates to a concrete structure for constructing a building floor and a building floor construction structure including the same. The present invention provides a concrete structure for constructing a building floor which forms a building floor foundation, including: a concrete main body to store fire-extinguishing water for fire suppression; and a fire-extinguishing water injection unit to inject the fire-extinguishing water stored in the concrete main body, and a building floor construction structure including the same. According to the present invention, the concrete structure for forming a building floor stores fire-extinguishing water, and thus early fire suppression is possible, building floor construction is facilitated, and excellent inter-floor sound insulation properties are provided.

The invention relates to a lightweight concrete building structure using pre-stressed lightweight structural beams 46 with a lightweight floor panel (48) spanning between beams (46). In a particular arrangement, the parking system using building structure (10) may be about less than half the weight than traditional parking building structures. In accordance with one arrangement of the particular embodiment of the invention, the building structure comprises floor structures having one or more structural beams, and one of more lightweight panels for attachment to the structural beam, wherein the floor structure is defined by joining together the one or more lightweight structural beams and the one of more lightweight panels. This particular arrangement is particularly useful because it permits defining a floor structure capable of sustaining relative large loads (such as a multitude of vehicles) using lightweight floor panels.

The invention concerns the construction process and can be employed in the course of construction of buildings and structures of different purposes in order to reduce labor consumption during formation of floor slabs, and to facilitate integrity retention of a slab and hoisting equipment during the rotation operation.

The carcassing method assumes simultaneous construction of bearing solid-cast reinforced-concrete structural vertical elements and hinged to them vertically oriented reinforced-concrete pivot floor slabs. The construction process involves preliminary installation of separating elements between slabs and bearing structures as well as between adjacent slabs. After the concrete has developed its strength, the above slabs shall be flipped to the horizontal position and butt joints between slabs and bearing vertical elements as well as between adjacent floor slabs shall be grouted. The vertical elements and floor slabs are formed in layers, vertical partition elements represent sheet-type or film-type polymer materials, the pivot hinge of floor slabs represent an elongated element located in the middle portion of a floor slab and whose longitudinal axis coincides with the slab rotation axis.

Bearing elements shall be formed as columns.

Tubular round-in-section hinge elements of horizontally adjacent floor slabs shall be located at opposite sides of the longitudinal axis of a column.

Floor slabs shall be reinforced by a prestressed reinforcement cage made of a sheathed steel cable.

Tendons shall be installed inside of floor slabs after their formation. For this, the solidifying grout is fed into cavity of the slip formwork inside a slab, linear voids are formed by means of channel formers.

The longitudinal axis of a hinge runs through the mass center of a floor slab.

Slabs shall be flipped in the ascending and descending order.

Channel formers shall be shifted upon shifting the formwork or upon transition to the next layer.

Channel formers shall comprise the broach for installation of tendons in channels.

Channel formers are equipped with vibrators for compaction of the grout.

After rotation of slabs, the reinforcing cable shall be placed inside transverse channels and shall be tensioned.

The present invention relates to a grid deck with shear-resisting plates and the assembly of the grid decks. The shear-resisting plates are pre-cast in the grid deck and protrude from the side surfaces thereof. When the grid decks with shear-resisting plates are assembled, they are laid on the beams with the shear-resisting plates contacting the beams and without the grid decks contacting the beams.

Formwork for constructing a floor system in a building, the formwork comprising: a plurality of pre-cast concrete joists positioned in a generally parallel arrangement, wherein one or more of the joists comprises: a horizontal base portion; and an upwardly directed portion extending substantially along the length of the joist, the upwardly directed portion having spaced apart surfaces extending upwardly from the base wherein respective shelf portions of the base are located adjacent said upwardly directed portion; a plurality of pre-cast concrete members for extending along a length of the joists for receiving wet concrete; and a supporting arrangement to support opposite ends each of the pre-cast concrete members upon oppositely arranged shelf portions of two adjacent joists.

Formwork for building a wall system, the formwork comprising: a first pre-cast concrete wall panel and a second pre-cast concrete wall panel, the first wall panel being adapted for being positioned in a spaced relationship with the second wall panel; a hollow core defined by oppositely arranged surfaces of the first and second wall panels, the core being adapted for receiving wet concrete; and a connecting arrangement for inter-connecting the first wall panel with the second wall panel in the spaced relationship, the connecting arrangement extending generally in an outwardly direction relative to said oppositely arranged surfaces of the first and second wall panels.

An RC lattice beam is provided that can greatly dampen the transfer of vibrations in particular. As the concrete included in the RC lattice beam is polymer concrete that contains a polymer, fine-scale vibrations that may otherwise affect exposure apparatuses may be effectively dampened, while the depth of the conventional lattice beam may be kept the same. Thus, a high-damping RC lattice beam is provided that is capable of maximizing the performance of a precision exposure apparatus by reducing the defect rate and improving productivity.

A method for forming a plurality of beams connected in series is provided. The method comprises the following steps: providing a plurality of columns; providing a plurality of pre-assembled bar combinations, wherein each of the plurality of pre-assembled bar combinations comprises a plurality of lower main bars and a plurality of lower stirrups, and at least one end of the plurality of the lower main bars has connection sections extending beyond the plurality of lower stirrups; hoisting each of the bar combinations so that the two ends thereof are placed on top of two adjacent columns of the plurality of columns and the connection sections of the plurality of lower main bars of adjacent plurality of bar combinations overlap; and connecting the plurality of connection sections of the plurality of lower main bars of the adjacent plurality of bar combinations.

The present invention relates to a grid deck with shear-resisting plates and the assembly of the grid decks. The shear-resisting plates are pre-cast in the grid deck and protrude from the side surfaces thereof. When the grid decks with shear-resisting plates are assembled, they are laid on the beams with the shear-resisting plates contacting the beams and without the grid decks contacting the beams.

The present invention relates to a concrete structure for constructing a building floor and a building floor construction structure including the same. The present invention provides a concrete structure for constructing a building floor which forms a building floor foundation, including: a concrete main body to store fire-extinguishing water for fire suppression; and a fire-extinguishing water injection unit to inject the fire-extinguishing water stored in the concrete main body, and a building floor construction structure including the same. According to the present invention, the concrete structure for forming a building floor stores fire-extinguishing water, and thus early fire suppression is possible, building floor construction is facilitated, and excellent inter-floor sound insulation properties are provided.