Fatigue test system for bridge and pavement with roller load

Abstract

The invention discloses a fatigue test system for a bridge and a pavement with roller load. The fatigue test system comprises a counterforce foundation, a combined bearing frame, a tested sample and a loading trolley, wherein the tested sample is fixed on the counterforce foundation; the counterforce foundation and the combined bearing frame are fixed mutually; the loading trolley is arranged on the tested sample; a horizontal cross beam is arranged on the combined bearing frame; the top of the loading trolley is connected onto the horizontal cross beam and the loading trolley can move leftwards and rightwards relative to the horizontal cross beam; a servo motor is further arranged on the horizontal cross beam and drives the loading trolley to move leftwards and rightwards through a slider-crank mechanism; an electro-hydraulic servo actuator on the loading trolley can control rollers of the loading trolley to move vertically. The fatigue test system for the bridge and the pavement with the roller load can perform full-size bridge and pavement fatigue tests and guarantees safety of the bridge and the pavement.

Description

technical field [0001] The invention relates to a test device, in particular to a fatigue performance test system for a full-scale steel structure bridge sample or a road surface sample. Background technique [0002] In the period of extensive development of the national economy, the design of road and bridge structures is mainly based on the analogy method, and neither the accuracy nor the rationality of the design is the focus of consideration. Such a design method is mainly used in the design of conventional materials and conventional structures. Although the empirical analogy method will have large design errors, the final result can still be achieved because of previous experience and relatively developed computer simulation calculation technology. accepted. [0003] Since entering the 21st century, the country's modernization has developed rapidly, various new structures and new materials have emerged one after another, the development direction of large-scale, integr...

AI Technical Summary

Problems solved by technology

For the structure composed of composite materials, it is difficult to estimate even with multi-parameter analysis by computer. In order to ensure safety, it is necessary to conduct close to the actual structure or full-scale test.

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