Jack support capable of sliding horizontally and earthquake resistance static test system

Abstract

The invention discloses a jack support capable of sliding horizontally and an earthquake resistance static test system. The jack support capable of sliding horizontally comprises a channel steel base, a rolling assembly and restraining clamps. The channel steel base comprises a body part and flange parts oppositely arranged on the two sides of the body part, the body part is provided with bolt holes, and a jack is fixed to the channel steel base through bolts. The rolling assembly comprises a plurality of ball bearings arranged along the center axis of the body part and rolling wheels connected with the ball bearings in a sleeved mode. One side of each restraining clamp is provided with bolt fixing holes, and the sides can be fixed to the two sides of a steel frame beam through bolts; the other sides of the restraining clamps are located on the outer sides of the flange parts and used for limiting the movement range of the channel steel base. The jack support has the advantages of being simple in structure and convenient to disassemble and assemble; in addition, the jack can slide relative to the steel frame beam in the load application process, and therefore deformation of a component is not hindered; the jack and the component are kept fixed without eccentricity, and therefore defects in the prior art are overcome.

Description

technical field [0001] The invention belongs to equipment for measuring material properties, in particular to a jack support which can slide horizontally when load is applied and is used in civil engineering experiment research. Background technique [0002] Structural seismic static test can also be called pseudo-static test or pseudo-static test, which uses static loading to simulate earthquake action. The advantage of the pseudo-static test is that it consumes less, and the test can be suspended during the loading process to observe the deformation of the specimen and the test phenomenon. According to the Regulations on Building Seismic Test Methods, a certain axial load needs to be applied on the top to simulate the self-weight of the upper component when the pseudo-static test is carried out on the component and frame. [0003] Such as figure 1 As shown, the axial load loading method is to fix the hydraulic jack 101 on the rigid frame beam 102 at the upper designated ...

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Problems solved by technology

[0004] However, since the jack is fixed on the rigid frame beam, the pressure exerted by the jack will be eccentric with the axis of the component during the experiment, and a bending moment will be generated on the component, which will affect the test result

Existing solutions are quite complex in structure, ineffective and inconvenient to use

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