1. General Provisions
1.0.1 This code is formulated with a view to ensure the safety, application, state-of-art technology, economic feasibility and guarantee quality in the design of high-rising structures.
1.0.2 This Code is applicable to the design of high-rising structures of steel and reinforced concrete, including broadcasting tower, communication tower, navigation tower, transmission tower, petrochemical tower, atmospheric monitoring tower, chimney, exhaust tower, water tower, pithead, wind power generation tower and other structures.
1.0.3 This Code is formulated based on the existing national standard "Unified Standard Reliability Design of Building Structures" GB 50068.
1.0.4 When designing the high-rising structures and selecting structural plans, it is necessary to consider the fabrication, transportation, installation and concreting, environmental impact after construction and completion and maintaining.
1.0.5 When designing the high-rising structures, not only shall this Code be applied, but shall also current relevant standards of the nation.
2. Terms and Symbols
2.1 Terms
2.1.1 High-rising structure
The structure relatively high and thin, including steel tower, steel mast and reinforced concrete tower and so on.
2.1.2 Steel tower
Self-supporting high-rise steel structure
2.1.3 Guyed steel mast
High-rise steel structure composed of column and guy cable
2.1.4 Reinforced concrete cylindrical tower
Self-supporting high-rising structures with cylinder-shaped reinforced concrete as the material
2.2 Symbols
2.2.1 Design value of the action and action effect
——Horizontal mobile displacement amplitude at the tower under the action of the wind pressure frequent value;
——Corresponding limit specified for the deformation and crack when designing;
, ——Horizontal and vertical seismic action;
——The pulling force (design value) on the force, concentrated load, foundation and anchor slab foundation;
——Overall horizontal seismic action of the structure;
——Overall vertical seismic action of the structure;
——Correspond to vertical force transmitting to the foundation from the standard combined superstructure of the loads effect;
——Standard up-pulling force in axial direction on top of the ith pile at limiting state for normal use;
, ——Horizontal seismic action and vertical seismic action of particle i;
——Permanent load, structure gravity, foundation deadweight (including the soil weight on the foundation) and effective gravity of the pile body; while the underwater portion shall be calculated by buoyant weight;
, ——Gravity concentrate on particles i and j;
——The total gravity representative of the structure when making the seismic calculation;
——Soil weight;
——Foundation and anchor slab foundation weight;
——Equivalent total weight load of the structure;
