Loading test device and method of asymmetric lateral-force-resisting structure

Abstract

The invention relates to a loading test device and method of an asymmetric lateral-force-resisting structure, and belongs to the technical field of building structure tests. The test device comprises a bearing system, vertical loading systems and horizontal loading systems, wherein the bearing system comprises a pedestal, a reaction wall, a bracket and a reaction beam. The vertical loading system comprises a vertical force jack, a vertical force sensor, a loading distribution beam and a horizontal sliding support. The number of the horizontal loading systems arranged at the same horizontal height is two or more than two, and the loading of the horizontal loading systems can be independently controlled; each horizontal loading system comprises a horizontal-force jack, a horizontal-force sensor, a hinge connecting piece and a horizontal-force transferring device; and the horizontal-force transferring device consists of a loading beam and a screw nut. When in test, after the vertical force is applied on the structure sample to be tested, the horizontal force is applied on the sample by utilizing the characteristic that all the horizontal loading systems can control loading independently and implementing displacement control, so that the torsion is effectively controlled. The testing device and method can be used for horizontal loading tests of various asymmetric lateral-force-resisting structures.

Description

technical field [0001] The invention relates to a loading test device and method for an asymmetric lateral force-resistant structure, belonging to the technical field of building structure tests. Background technique [0002] The development and deepening of research work in the field of engineering structures largely depends on experimental means and methods. At present, the scale of structural tests is getting larger and larger, not only the test research of large-scale structural components is increasing, but also due to the needs of research, there are continuous requirements for large-scale tests on the overall structure or sub-structures, so the test methods are improved according to actual conditions. method becomes an urgent need. [0003] In structural seismic tests, horizontal low-cycle repeated loading is often used to simulate the situation of lateral force-resistant structures subjected to earthquakes. For the symmetrical structural specimen whose structural l...

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Problems solved by technology

For the symmetrical structural specimen whose structural layout is exactly the same with respect to the left and right sides of the horizontal loading point, due to its bilateral symmetry and translational deformation, the method of setting distribution beams at the same horizontal height and single-point loading is Yes, the test method is relatively mature; for asymmetric structures with different structures on both sides, if the above method is used to apply horizontal force, due to the asymmetry of the specimen itself relative to the plane of the left and right sides of the horizontal loading point, it is bound to appear in the test. It is difficult to control the torsional deformation, so the horizontal loading cannot be reasonably controlled, so that the test that simulates the actual force situation cannot be carried out

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