Historic building wooden pillar overturning deformation loading measurement device and loading measurement method thereof

Abstract

The invention relates to a historic building wooden pillar overturning deformation loading measurement device. The historic building wooden pillar overturning deformation loading measurement device comprises a concrete bearing platform and a steel sleeve, wherein a plurality of pull rings are uniformly distributed on a peripheral wall of the steel sleeve along the peripheral direction at intervals; an upper steel strand for calibrating is bound on and dragged out from each pull ring; each upper steel strand is connected with a force sensor, a lower steel strand, an extension spring and a calibrating screw rod in sequence; a nut which is anchored into a ground anchor hole sleeves each calibrating screw rod. The device further comprises a loading steel strand, a flat plate, a first dial indicator and a second dial indicator. The invention further comprises a loading measurement method of the historic building wooden pillar overturning deformation loading measurement device. With the adoption of the historic building wooden pillar overturning deformation loading measurement device and the loading measurement method thereof, boundary conditions of a pillar bottom partition of a measured historic building wooden pillar can be really reflected under laboratory conditions and the historic building wooden pillar can realize overturning deformation under the state that the whole body keeps stable; and the loading amplitude precision is high, the manual operation is simple and large-size fields are not needed.

Description

technical field [0001] The invention relates to an ancient building wooden column overturning deformation loading measuring device and a measuring method thereof. Background technique [0002] The overall overturning of the columns has always been an inevitable and common problem in the wooden structures of ancient buildings. It is very important to study the impact of the overturning deformation of real columns on the study of ancient wooden buildings. But in reality, it is unrealistic to pushover and load an ancient building in service, and it is difficult for the traditional oblique loading method in the laboratory to reproduce the overturning deformation of columns in real ancient wooden buildings: on the one hand, due to the fact that the columns of real ancient buildings The bottom and the foundation stone of the column are separated from each other, and an excessively large inclination angle will quickly cause the column to overturn or become unstable, so the inclina...

AI Technical Summary

Problems solved by technology

But in reality, it is unrealistic to pushover and load an ancient building in service, and it is difficult to reproduce the overturning deformation of columns in real ancient wooden buildings by the traditional oblique loading method in the laboratory: on the one hand, due to the fact that the columns of real ancient buildings The bottom and the foundation stone of the column are separated from each other, and an excessively large inclination angle will quickly cause the column to overturn or become unstable, so the inclination angle of each stage of loading is very small

On the other hand, in the traditional loading method, the axial pressure on the upper part of the column top is applied by a jack, so that the upper axial pressure will cause in-plane bending moments and second-order effects on the column during the tilting process of the column, making it unable to maintain stability

Since the bottom of the column is usually hinged or rigidly connected in the traditional loading method, the above problems do not exist, but it does not match the boundary conditions of the column foundation stone and column partition in reality

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