| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a stress measurement method of a concrete structure which is capable of a stress estimation with high precision acting on the concrete structure with a simple drilling tool. <P>SOLUTION: At a position which forms a drilling hole of the concrete structure beforehand, a plurality of circumference strain gaugesθ1-θ8 along circumference direction of the drilling hole H and the plurality of radial direction strain gauges R1-R8 positioned outside of each circumference direction strain gauge are applied. The drilling hole H is then formed by the drilling tool, and changes of the strain before and after making the drilling hole are measured by the circumference direction strain gauges and/or radial direction strain gauges. Each stress is calculated on the plurality of groups of calculating patterns which are combining the obtained measuring values on the plurality of circumference direction strain gauges and/or radial direction strain gauges. Thereafter, the stress acting on the concrete structure is estimated by using mean values of the plurality of the obtained stress values. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
