by The announcement of the Ministry of housing and urban rural development on Issuing the guide for the dimensions of main components of steel structure residence.
In order to implement the guiding opinions of the general office of the State Council on vigorously developing prefabricated buildings (GBF [2016] No.
71), carry out the action of creating green buildings and further promote the development of steel structure residence, we have organized the preparation of the guide for the dimensions of main components of steel structure residence , is hereby issued.
Annex full text: the directory of the guide to the dimensions of main components of steel structure residence is divided into 6 chapters and 3 appendices.
The main contents include: 1 summary; 2.
Dimensions of beam members; 3.
Dimension of column member; 4.
Dimensions of supporting members; 5.
Dimensions of low rise cold-formed thin-walled steel members; 6.
Connection node size.
1 overview 1.1 preparation purpose and scope of application 1.1 1.
In order to implement the national technical and economic policies, run the standardization concept through the whole process of steel structure residential design, production, construction, operation and maintenance, guide the profile steel production enterprises, design units and manufacturing enterprises to coordinate and unify the common section form, size and length of components, promote the standardization of components, improve efficiency and save costs, This guide is formulated to improve the overall construction level of steel structure housing.
1.1.
2 this guide is applicable to the industrialized production, design and selection of hot-rolled section steel members, cold-formed section steel members and their composite members for steel structure residential buildings, including the provisions on the coding rules, common lengths, common section forms and sizes, connection joints, etc.
1.1.
3 this guide is applicable to beams, columns, supports in steel structure houses and members in Low-Rise cold-formed thin-walled steel structures.
1.2 basic provisions 1.
The common section form, size and length of steel structure residential components shall be determined according to the use frequency, economy and applicability principles, and shall comply with the relevant provisions of the current national standard coordinated standard for building modules (GB / t50002).
1.2.
2 the determination of common section form, size and length of steel structure residential components shall not only coordinate with the building functional space, structural system, peripheral protection system, interior decoration system, equipment and pipeline system, but also coordinate with the component production, transportation, construction and installation.
1.2.
3.
The common section form, size and length of members provided in this guide should be selected for the members of steel structure residence.
When selecting the member sections listed in this guide, the designer shall also comply with the provisions of the current relevant national standards.
1.2.
4 the selection of steel in this guide shall comply with the provisions of current national standards carbon structural steel GB / T700, low alloy high strength structural steel GB / t1591, continuous hot dip galvanized and zinc alloy coated steel plates and strips GB / t2518, etc; It shall also comply with the current national standards code for seismic design of buildings GB50011, standard for design of steel structures GB50017, technical standard for fabricated steel structures GB / t51232, technical code for steel structures of high-rise civil buildings jgj99, technical code for low rise cold-formed thin-walled steel buildings jgj227, etc.
1.3 member and node types 1 member type 1 beam can be divided into frame beam and non frame beam.
The section form can be hot rolled H-section steel.
The frame column in 2 columns can be hot-rolled H-section steel Square (rectangular) steel pipe and combined special-shaped column.
3 hot rolled H-section steel and square steel can be used for support (rectangular) steel pipe.
1.3.2 node type 1 beam column connection node is the connection node between frame beam and frame column, usually rigid connection node or hinged connection node.
2 beam beam connection node is the connection node between non frame beam and frame beam, usually rigid connection node or hinged connection node.
3 support connection node is the connection node between support and beam column node and frame beam, usually Rigid connection node or hinged connection node.
4 component splicing joints include column to column splicing joints and beam to beam splicing joints.
1.4.
Member coding rule 1 steel frame beam coding rule: GKL – section form – section size – member length.
Where: GKL – steel frame beam; Section form – H (hot rolled H shape), form code shall be subject to this guide; section size – use “height (H) × Width (b) × Web thickness × Flange thickness “means; Member length – determined according to the length of member axis, in mm.
Example: gkl-h400 × two hundred × eight × 13-6000。 2 coding rules for non frame steel beams: GL – section form – section size – member length.
Where: GL – non frame steel beam, i.e.
steel beam whose beam ends are not connected with steel frame columns; Section form – H (hot rolled H shape), and the form code shall be subject to this guide; Section size – use “height (H) × Width (b) × Web thickness () × Flange thickness () “indicates; component length is determined by axis length, in mm.
Example: gl-h300 × one hundred and fifty × six × 9-3000。 3.
Coding rules for steel frame columns: gkz – section form – section size – member length.
Including: gkz – steel frame column; Section form – H (hot rolled H-shaped) and mouth (square (rectangular) pipe), and the form code shall be subject to this guide; Section size – height (H) for H-shape × Width (b) × Web thickness () × Flange thickness () “; square height (H) × Thickness (T) “indicates; Rectangle height (H) × Width (b) × Thickness (T) “indicates; The length of components shall be determined according to the nominal length.
Example: gkz-h300 × three hundred × ten × 15-9000GKZ-□300 × 10-9000GKZ-□300 × two hundred × 12-9000。 4 coding rules for non frame steel columns: GZ – section form – section size – member length.
Where: GZ – steel column, other steel columns except steel frame column and stair column; Section form – H (hot rolled H-shaped) and □ (square (rectangular) pipe), and the form code shall be subject to this guide; Section size – height (H) for H-shape × Width (b) × Web thickness () × Flange thickness () “; square height (H) × Thickness (T) “indicates; Rectangle height (H) × Width (b) × Thickness (T) “indicates; The length of components shall be determined according to the nominal length.
Example: gz-h200 × two hundred × eight × 12-3000； GZ-□200 × 6-3000； GZ-□300 × one hundred and fifty × 8-3000。 5.
Coding rules for composite special-shaped columns: YXZ – section form – section model – member length.
Including: YXZ – combined special-shaped column; Section forms include L-shape, T-shape and cross shape.
Section size – height (H) × Width (b) × Thickness (T) “indicates; The length of components shall be determined according to the nominal length.
Example: yxz-l400 × four hundred × 200-9000； YXZ-T600 × six hundred × 200-9000； YXZ – ten 600 × six hundred × 200-9000。 6.
Support coding rules: ZC – section form – section size – member length.
Including: ZC – support; Section form – H (hot rolled H-shaped) and □ (square (rectangular) pipe), and the form code shall be subject to this guide; Section size – height (H) for H-shape × Width (b) × Web thickness () × Flange thickness () “; square height (H) × Thickness (T) “indicates; Rectangle height (H) × Width (b) × Thickness (T) “indicates; The length of components shall be determined according to the nominal length.
Example: zc-h200 × two hundred × eight × 12-8100； ZC-□200 × 8-8100； ZC-□300 × one hundred and fifty × 12-8100。.
