Multi-node fatigue failure test device for steel beam columns and concrete beam columns

Abstract

The invention discloses a multi-node fatigue failure test device for steel beam columns and concrete beam columns. The device comprises a steel frame system, an electro-hydraulic servo actuator, a test beam column and a test furnace, wherein the test beam column is arranged in the test furnace; the steel frame system is arranged on the periphery of the test furnace; a horizontal fatigue load device, a vertical fatigue load device and a torsional fatigue load device are sequentially arranged between the steel frame system and the test beam column, the horizontal fatigue load device is arrangedin the horizontal direction of the test beam column, the vertical fatigue load device is arranged in the vertical direction of the test beam column, and the torsional fatigue load device is arranged above the test beam column. The eccentric tensile fatigue load to the steel beam columns and the concrete beam columns can be met, the eccentric size can be set according to experimental requirements,and all that is required is to change the relative position of a column head and the test beam column; the fatigue failure test device can also meet requirements of nodes such as cross type, T type, Ltype and the like of the steel beam columns and the concrete beam columns.

Description

technical field [0001] The invention relates to the field of fire resistance of building structures, in particular to a multi-node fatigue damage test device for steel beam columns and concrete beam columns. Background technique [0002] In recent years, with the rapid development of my country's national economy, my country has built large-scale and large-scale infrastructure such as subways, bridges, and production plants. In subway stations, because locomotives pass on rails, and because most of the structures in subway stations are underground and The structure is complex, and there is also the interaction between the upper and lower rails, so a large fatigue load is generated. Similarly, the driving of cars on the bridge also imposes fatigue loads of irregular side cycles on the bridge structure. The production plant is due to large machinery. The use of the same also produces fatigue loads on the plant structure. In addition, most subway stations adopt long-span structu...

AI Technical Summary

Problems solved by technology

Moreover, most subway stations adopt long-span structures, and the structural form is also very complex in order to meet the needs. The traffic flow in the subway station is particularly large. Once a fire occurs, the consequences of node failure are unimaginable. Therefore, it is very important to study the fatigue load of subway stations.

Images