寿县合兴浅谈低层轻型钢结构装配式住宅体系发布时间：2015-12-24 10:21:36 浏览次数:799
The basic components of the assembled housing of the cold formed thin-walled steel structure are only U shape (ordinary groove shape) and C (roll edge groove) two cross sections. A U-shaped cross-section is commonly used as a top beam, a bottom beam and side beam, a C-shaped cross section is commonly used as a member of beam and column, thickness of the metal material of the component generally in the range of 0.46 to 2.46mm, but top beam and bottom thickness of the beam, side beam and bearing component should be not less than 0.84 mm. Component has been finalized, U - shaped section of the commonly used models of only 8, C - shaped section of the commonly used models of only 5, visible component is very small, regardless of design or production and installation are very convenient. Also reasonable section shape of the cold-formed thin-walled steel members, high utilization rate of raw materials, use of steel,, in Australia, the system of steel quantity about 100kN/m2.
The fasteners are connected with a screw, an ordinary nail, a nail, a rivet, a bolt and a fastener. By force of commonly used components screw (the self drilling tapping screws and self tapping screw connection, self drilling tapping screws are used to 0.84 mm above the thick steel plate connection, self tapping screw is only used for the connection between gypsum board and other structural board, or 0.84 mm thick steel plate, commonly used self drilling tapping screw self tapping screw specifications are just 3 ~ 5. In the structure of the secondary parts, can be used to nail, pull rivets or fasteners and other fasteners, fastener connection is also used to form a combination of cross section. Light steel floor or wall connected by anchor bolt and masonry or concrete foundation, common nails for connecting components and wooden beams.
Floor from dense beam and floor panel, at the beam end caps with edge beam, floor beam in the wall of the support must have enough bearing length. When the span of the floor beam is beyond 3.5m, the lateral stability of the beam should be strengthened. When the openings in the floor when the floor should be set around the edge beam. The floor must be reliably connected with concrete foundation, wooden beam or load-bearing walls. The floor and the components of strength, stiffness, stability and vibration of the floor should meet the design requirements.
Wall structure is composed of dense column and wall, wall columns sleeved at both ends of the bottom beam or beam, wall panels for wall provide lateral support, if necessary should be set X shaped shear support system. All load-bearing wall top of the door and window openings must set the lintel and lintel can use box, industry and trade or L-shaped cross section, the section size should comply with the design requirements. When the seismic fortification intensity is 8 degree and above or the maximum wind pressure is 1.5kN/m2 (standard value), we should set up the shear wall and take the anti pull and so on. The wall and the foundation floor or wall and its components must be reliable connection, strength, stiffness and stability should meet the design requirements.
The roof also adopts dense beam system on the roof, roof and roof beam by roof beam. Roof truss (beam) and load-bearing walls of the roof, roof panel and roof beam, end of the roof and the gable roof, roof truss beam and truss beam or roof member must be reliable connection and roof beam on the bearing must have enough bearing length, in order to keep the roof in the installation and use of stability and integrity, roof beams and roof beam shall be set level of support, in between the roof beam and the oblique beam should also set the diagonal brace. When on the roof or ceiling openings, the hole should be set around the edge beam. When the seismic fortification intensity is 8 degrees and above, or the maximum pressure for 1.5kN/m2 (standard value) above. The roof eaves through connection piece and the shear wall reliable connection. The strength, stiffness and stability of the roof system and its members should meet the design requirements.
In order to ensure that the house has good live performance, deal with the underlying floor, wall and roof to take heat preservation and insulation measures, such as in the light steel skeleton cavities filled cotton insulation, spray liquid foaming material and paste foam heat insulation board and other; residential wall, floor and roof should also take sound-absorbing, sound insulation and noise reduction measures, building envelope should also take measures to prevent the occurrence of water vapor condensation phenomenon.
For load-bearing structure of the steel, are using Q345 or Q390 steel, when there is a reliable basis, can also be used in other grades of steel. Thermal insulation material made of glass fiber, polyurethane board, rock wool board, plastic board and other lightweight materials. Waterproof material can be used waterproof coiled material, modified asphalt, composite materials, etc.. The structure panel can adopt the material such as the directional board, Jiao Hemu (bamboo) board, gypsum board, cement fiber board, cement sawdust board, etc.. Roofing material can be used as lightweight materials such as asphalt tile, metal tile, color cement tile and so on. Exterior wall facing material can be used for metal plate, veneer, wood veneer, composite material and so on.