CAJ | 학술논문

为直接识别出基于残余力向量法的连续梁结构损伤，提出先由灵敏度分析求得结构刚度联系矩阵，再由结构刚度联系矩阵将损伤结构的刚度摄动矩阵展开，得到新的结构残余力向量方程，通过求解此方程即可识别出连续梁结构的损伤位置和程度，进一步运用所提出方法对七跨连续梁结构进行损伤识别，结果表明，识别精确度较高，从而验证了该方法的有效性。
위직접식별출기우잔여력향량법적련속량결구손상，제출선유령민도분석구득결구강도련계구진，재유결구강도련계구진장손상결구적강도섭동구진전개，득도신적결구잔여력향량방정，통과구해차방정즉가식별출련속량결구적손상위치화정도，진일보운용소제출방법대칠과련속량결구진행손상식별，결과표명，식별정학도교고，종이험증료해방법적유효성。
In order to identify the damage to a continuous beam based on residual force vector, the stiffness connectivity matrix of the continuous beam is obtained by the sensitivity analysis, the stiff-ness perturbation matrix of the damaged beam can be expanded with the stiffness connectivity ma-trix, and a new residual force vector equation is obtained. The location and extent of damage in the beam can be identified by solving this equation. The proposed method was used to identify the dam-age of a seven-span continuous beam, and the results show that identification accuracy is high, which verifies the validity of this proposed method.