What is the octagonal column monument?

Fusiform Column

Wooden column components are divided into fusiform columns and upper-cut shuttle columns according to their different column shapes. Both the upper and lower parts of the fusiform column are cut-off columns. , with a straight column in the middle, forming a "shuttle"-shaped column; the shuttle column is cut in the upper part, and only the upper part is closed, and both the middle and lower parts are straight columns. The Song style is called a fusiform column.

The fusiform column Due to its beautiful architectural shape and good mechanical stability, fusiform columns have been widely used in various spatial structure systems as vertical stress components in recent years.

Chinese name

Fusiform columns.

Interpretation

"Shuttle" shaped pillar

Features

Good stability

Field

Building structure

Measurement method

The quantities of manufacturing, hoisting and dismantling of fusiform columns made of large wooden components are measured in cubic meters according to their construction volume. The maximum diameter shown in the figure shall prevail, and the column height shall be as shown in the figure from the column foundation or the upper skin to the lower skin of the bucket. The production, hoisting, and disassembly quotas for fusiform columns shall be based on the construction specifications (column classification: fusiform column, upper part cut. According to the construction specifications and volume of fusiform columns, the corresponding items for the production, hoisting and disassembly of fusiform columns shall be applied respectively [1]

Applications and Characteristics

As axial compression members, fusiform columns (solid web fusiform columns and lattice fusiform columns) are widely used in airport terminals, stadiums and cable-membrane structures. Application. The architectural shape of the fusiform column is graceful, light and elegant, and it conforms to the mechanical principle of the axial pressure rod. The main forms of the fusiform column include solid web type and lattice type. The solid web type includes the fusiform thin-walled round shape. Steel pipe columns and fusiform thin-walled square steel pipe columns; lattice structures include three-limb, four-limb and multi-limb fusiform lattice columns. In the spatial structure, most of the branches are round steel tubes.

In addition to their graceful appearance, fusiform columns are also used. In addition to its architectural shape, it also has better stability than equal-section columns. As we all know, under the action of axial pressure, equal-section columns will undergo bifurcation instability in the form of sine half waves in order to improve the buckling of axial compression members. In addition to changing the boundary constraint conditions and setting up lateral supports, the load can also increase the moment of inertia at the mid-span of the column, which is consistent with the larger bending moment at the mid-span of the column when the column is unstable. This is what happens to fusiform columns. Mechanical roots[2].

Reference materials

[1] Zhang Cheng, Zhang Jianping, ed., Measurement and Pricing of Ancient Chinese Building Projects, China Planning Press, 1st Edition, September 2007,

< p>[2] Guo Yanlin, Deng Ke, Lin Bing. Research on the stability performance and design methods of fusiform columns [J]. Industrial Architecture, 2007, 37(7):92-95.