| 摘要 |
For a bridge displacement measurement apparatus capable of measuring displacement easily and rapidly when measuring displacement of a slab of a bridge such as a river bridge which installed in a place whose bottom is not flat, the present invention provides a bridge displacement measurement apparatus comprising: a middle support part which has a flat upper plane and includes a ferromagnetic material; a bottom support part which is located at a lower part of the middle support part, is combined to the middle support part, and includes a plurality of length-adjustable legs; an upper support part which includes a magnet holder attachable to several points of the upper plane of the middle support part according to the operation of an on-off switch, and an arm connected to the magnet holder; and a displacement measurement sensor which is fastened to the upper support part. |
