Dapeng Town Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province, China
Net frame is divided into flat plate net frame and shaped net frame, flat plate net frame generally includes: positive release quadrangular cone net frame, oblique release quadrangular cone net frame, pumping quadrangular cone net frame, flat plate triangular cone net frame, etc., and shaped net frame generally includes: single-layer spherical shell net frame, double-layer spherical shell net frame, double-layer cylindrical shell net frame, oblique release triangular cone net frame and so on.
According to the support conditions of the net frame, the net frame is divided into the upper string support and lower string support. It is also divided into single-layer net frame and multi-layer net frame, with column point support and surrounding ring beam support.
Net frame is generally divided into bolted ball node net frame, welded ball node net frame, plate node net frame. In the large-span space structure, it is usually used in the case of mixed use of bolted ball node net frame and welded ball node net frame.
The drainage of the roof of the net frame is generally divided into centralised drainage and free falling water, and the slope of drainage is generally divided into structural slope and supporting slope, structural slope according to the needs of the building, using the structure of the net frame itself to design the slope of the drainage, and supporting slope according to the slope of the building, using the ancillary components of the net frame to find out the slope.
The disturbance of the net frame is an important basis for detecting the construction quality of the net frame, the disturbance of the net frame refers to the difference of the design elevation of a node after the installation of the net frame, and the measurement of the deflection of the net frame is divided into two times of empty and full load, and the comparison of the two times of data is used to check and analyse the quality of the construction of the net frame.
The sagittal height of the net frame is the height between the upper and lower strings of the net frame structure.
It is the smallest installation unit in addition to loose parts in the process of net frame installation, generally divided into two parts: plane truss and vertebra.
The installation unit composed of loose parts or small assembling unit in the process of net frame installation is generally divided into two kinds: strip and block.
The nodes of net frame are generally divided into three kinds: bolt ball node, welded ball node and welded plate node.
