Multifunctional structure test loading system incorporating loading tonnage and loading accuracy

Abstract

The invention discloses a multifunctional structure test loading system incorporating loading tonnage and loading accuracy in the technical field of civil engineering. The system includes an upright loading component and a main body frame, and further includes a plurality of pre-stressed anchoring assemblies that can lock a test model on a bottom reaction force base; the system further includes atop steel reaction force platform; the upright loading component includes at least four vertical loading climbing actuators; a plurality of X direction slide guides are arranged on the lower surface of the top steel reaction force platform; a plurality of sliders slidably arranged on the X direction slide guides are further distributed on the lower surface of the top steel reaction force platform;a Y direction slide guide arranged vertically in a staggered manner in space with the the X direction slide guides is installed on each slider; and a vertical loading actuator which is capable of performing vertical double-direction loading on the test model and in slidable cooperation with the corresponding Y direction slide guide is installed on each slider. The loading accuracy, application scope and use efficiency of the structure test loading system are significantly improved.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a multifunctional structural test loading system that takes both loading tonnage and loading accuracy into consideration. Background technique [0002] Structural test technology is one of the important foundations to promote the development of civil engineering disciplines. With the rapid development of my country's social economy, a large number of high, large, special and heavy civil engineering structures have been built one after another. These structural systems are novel, complex in force, difficult in design, and have no existing codes for reference. Their mechanical performance urgently needs to be clarified through structural tests, especially large-scale and multi-dimensional model tests. At the same time, with the continuous improvement of the research level of civil engineering in my country, a large number of major scientific problems that have long plagu...

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Problems solved by technology

The above-mentioned multifunctional structural testing machine can realize plane loading on beams, columns, walls, joints and frames, but there are also the following outstanding problems: ①The vertical actuator is designed with a large loading tonnage to meet the requirements of large-scale components , when carrying out more mechanical tests of small-scale structural components, the loading control accuracy of the actuator is often difficult to meet the requirements, thus greatly reducing the utilization efficiency of testing machines on the market; In the rigid frame structure, the columns on both sides need to bear not only the vertical reaction force but also the horizontal reaction force, which leads to the huge size of the columns on both sides, which makes the test space relatively cramped and the size of the test model is greatly limited; The structure generally adopts a portal frame structure, and the horizontal actuator and ground anchor system can only be arranged in one direction, which makes the above-mentioned testing machines generally only capable of plane loading, and cannot carry out tests on space structures and joints

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