A structure enables free and reasonable designing of a cross section of an end of a steel beam in accordance with bending stress and a housed state of a PC steel, thereby providing an economic and reasonable building as a whole. A beam end block includes end plates and an anchor plate. The end plates are fixed at an end surface of an H-section steel in a direction substantially perpendicular to the longitudinal direction of the beam. The anchor plate is fixed to the H-section steel separately from the end plates, on a side opposite to a column, in a direction substantially perpendicular to the longitudinal direction of the beam. An end of the steel beam has an upper part and a lower part. The upper part protrudes toward the column more than the lower part and is mounted on a cogging. The beam end block has a height dimension larger than the height dimension of the H-section steel and has a lower end that is disposed at substantially the same height as a lower end of a side surface of the cogging facing the lower part of the end of the steel beam.

The column-base joint includes a prefabricated-reinforced-concrete column and a reinforced-concrete foundation, and further includes a coating-steel-plate sleeve that is integrally prefabricated with the concrete column and encloses an exterior of a column base. A gap is between a bottom end of the coating-steel-plate sleeve and an upper surface of the foundation. An outside of the gap is provided with a plugging material. The joint further includes an annular rib plate all of whose edges are horizontally and seamlessly connected to an inner wall of the coating-steel-plate sleeve and whose middle portion is provided with a rib-plate opening. The annular rib plate is provided with a sleeve opening that matches with the grouting sleeve device.

The column-base joint includes a prefabricated-reinforced-concrete column and a reinforced-concrete foundation, and further includes a coating-steel-plate sleeve that is integrally prefabricated with the concrete column and encloses an exterior of a column base. A gap is between a bottom end of the coating-steel-plate sleeve and an upper surface of the foundation. An outside of the gap is provided with a plugging material. The joint further includes an annular rib plate all of whose edges are horizontally and seamlessly connected to an inner wall of the coating-steel-plate sleeve and whose middle portion is provided with a rib-plate opening. The annular rib plate is provided with a sleeve opening that matches with the grouting sleeve device.

A structural member section comprised of horizontal top and bottom flange elements interconnected by one or more vertical web member. The top flange of the member is serrated such that a series of serrations protrude horizontally in at least one direction from a top of the one or more vertical web member or are cut-out from the flange of a rolled shape. In one embodiment, the serrated top flange and at least a portion of the web member are intended to be encased by a horizontal concrete slab or slab-on-deck assembly. The slab material is capable of encasing all exposed surfaces of and curing around each serration to transfer horizontal shear forces between the serrated top flange and the slab material such that the member and slab behave compositely.

A structural member section comprised of horizontal top and bottom flange elements interconnected by one or more vertical web member. The top flange of the member is serrated such that a series of serrations protrude horizontally in at least one direction from a top of the one or more vertical web member or are cut-out from the flange of a rolled shape. In one embodiment, the serrated top flange and at least a portion of the web member are intended to be encased by a horizontal concrete slab or slab-on-deck assembly. The slab material is capable of encasing all exposed surfaces of and curing around each serration to transfer horizontal shear forces between the serrated top flange and the slab material such that the member and slab behave compositely.

The invention provides a method of securing external wall insulation (EWI) panels to the outer walls of a high rise building of large panel construction. The method comprises first identifying the location of internal voids (7) in outermost floor/ceiling panels (2) of the building; and then creating continuous passages through the outer load-bearing wall panels (1) of the building into the located internal voids (7), each such passage forming a tie bar anchorage hole extending at least half a metre into the adjacent floor/ceiling panel. Down the length of each tie bar anchorage hole is inserted a tie bar (10) which has at an inner end portion (11) an anchorage (13,14) and which has at an outer end portion (12) an externally screw-threaded portion which projects from the outer load-bearing wall panel. A pattress plate (17) is located at the outer end of each tie bar anchorage hole, with the externally screw-threaded outer end portion of each tie bar extending through an aperture in the associated pattress plate (17). The pattress plates are secured in position in or against the outer load-bearing wall panels (1). A grouting compound (20) is then extruded past each pattress plate (17) or through an eccentric grout injection hole (19) in each pattress plate (17) and into the tie bar anchorage holes around the tie bars (10). Once the grouting compound (20) has set, a metal framework (25,26) for supporting external wall insulation for the building is bolted to the projecting externally screw-threaded end portions (12) of the tie bars (10), and EWI panels are secured to the metal framework (25,26) to clad the building.

The invention provides a method of securing external wall insulation (EWI) panels to the outer walls of a high rise building of large panel construction. The method comprises first identifying the location of internal voids (7) in outermost floor/ceiling panels (2) of the building; and then creating continuous passages through the outer load-bearing wall panels (1) of the building into the located internal voids (7), each such passage forming a tie bar anchorage hole extending at least half a metre into the adjacent floor/ceiling panel. Down the length of each tie bar anchorage hole is inserted a tie bar (10) which has at an inner end portion (11) an anchorage (13,14) and which has at an outer end portion (12) an externally screw-threaded portion which projects from the outer load-bearing wall panel. A pattress plate (17) is located at the outer end of each tie bar anchorage hole, with the externally screw-threaded outer end portion of each tie bar extending through an aperture in the associated pattress plate (17). The pattress plates are secured in position in or against the outer load-bearing wall panels (1). A grouting compound (20) is then extruded past each pattress plate (17) or through an eccentric grout injection hole (19) in each pattress plate (17) and into the tie bar anchorage holes around the tie bars (10). Once the grouting compound (20) has set, a metal framework (25,26) for supporting external wall insulation for the building is bolted to the projecting externally screw-threaded end portions (12) of the tie bars (10), and EWI panels are secured to the metal framework (25,26) to clad the building.

Various implementations include methods and apparatuses for constructing a concrete structure. In one implementation, a structure includes a pre-cast concrete column section and a pre-cast concrete beam section. The column section includes an embedded first assembly with a threaded rod, and the beam section includes an embedded second assembly defining a channel for receiving the threaded rod. Grout is fed through a joint between the column and beam sections into the second assembly to couple the threaded rod with the second assembly. The grout is urged through the joint and the second assembly by gravity and by applying vacuum suction to a grout port defined by the second assembly. The grout port extends between the channel of the second assembly and an external face of the beam section.

Various implementations include methods and apparatuses for constructing a concrete structure. In one implementation, a structure includes a pre-cast concrete column section and a pre-cast concrete beam section. The column section includes an embedded first assembly with a threaded rod, and the beam section includes an embedded second assembly defining a channel for receiving the threaded rod. Grout is fed through a joint between the column and beam sections into the second assembly to couple the threaded rod with the second assembly. The grout is urged through the joint and the second assembly by gravity and by applying vacuum suction to a grout port defined by the second assembly. The grout port extends between the channel of the second assembly and an external face of the beam section.

The present invention relates to a reinforcing structure of unexpired concrete building floors used for reinforcing a concrete column, a concrete beam and a concrete floor slab. The structure has: at least one external column each of the at least one external column wrapping around the concrete column; at least one framework each wrapping around the concrete beam; a plurality of brackets fixedly mounted to the lower surface of the concrete floor slab, and a base plate disposed at the bottom of the concrete column, wherein the bottom of each of the at least one external column is fixed to the base plate, the top of each of the at least one external column is fixed to a corresponding one of the at least one framework, and the corresponding framework is fixed to the plurality of brackets along a length direction of the concrete beam.