000004767 001__ 4767
000004767 005__ 20141119144551.0
000004767 04107 $$aeng
000004767 046__ $$k2002-06-02
000004767 100__ $$aHu, Xiaofeng
000004767 24500 $$aSTRUCTURAL DAMAGE IDENTIFICATION USING STATIC DEAD LOAD STRAIN MEASUREMENTS

000004767 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004767 260__ $$bColumbia University in the City of New York
000004767 506__ $$arestricted
000004767 520__ $$2eng$$aA method has recently been developed for identifying damage in a structure that is based on the redistribution of dead load in the system. The static-based procedure uses only strain measurements at a few degrees of freedom (DOFs) and no additional external force is required. These features make the method ideally suited for long-term monitoring of large civil structures. Damage in the structure is represented by a section of reduced flexural rigidity. The identification problem is formulated as an optimization problem, which is solved using a float-representation genetic algorithm (FGA). The static flexibility-based error function is defined as the difference between the measured strains and the analytically predicted strains obtained from a finite element model. By minimizing the error function, the damage location and damage severity can be successfully identified. The method is demonstrated using two structures, a fixed-fixed beam and a simple frame. Results show that the procedure can correctly identify the damage with good accuracy, even in the presence of measurement noise.

000004767 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004767 653__ $$adamage identification, dead load, finite element, genetic algorithm, static, strain

000004767 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004767 720__ $$aHu, Xiaofeng$$iShenton, Harry W.
000004767 8560_ $$ffischerc@itam.cas.cz
000004767 8564_ $$s80965$$uhttps://invenio.itam.cas.cz/record/4767/files/312.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004767 962__ $$r4594
000004767 980__ $$aPAPER