本文選題：矩張量　切入點：聲發(fā)射　出處：《防災減災工程學報》2017年05期

【摘要】：為了利用聲發(fā)射技術對鋼筋混凝土構件損傷進行定量檢測,將矩張量在地震工程學中反演震源機制的理論用于結構的聲發(fā)射無損檢測。闡述了基于矩張量理論的聲發(fā)射檢測技術原理,推導了利用矩張量理論反演裂縫機制(裂縫位置、類型和走向)的定量表達式。通過鋼筋混凝土梁的四點彎曲試驗,按照基于矩張量的聲發(fā)射分析方法,明確裂縫機制,并與試驗結果比較,探討矩張量理論用于鋼筋混凝土結構無損檢測的有效性。結果表明:對于鋼筋混凝土受彎構件,基于矩張量的聲發(fā)射無損檢測技術能定量地描述結構的裂縫機制,具有較好的準確性。
[Abstract]:In order to quantitatively detect the damage of reinforced concrete members by acoustic emission technology, The theory of inversion focal mechanism of moment Zhang Liang in seismic engineering is applied to acoustic emission nondestructive testing of structures. The principle of acoustic emission detection technology based on moment Zhang Liang theory is expounded, and the inversion mechanism of crack (crack location) is deduced by using moment Zhang Liang theory. Through the four-point bending test of reinforced concrete beam, according to the method of acoustic emission analysis based on moment Zhang Liang, the crack mechanism is clarified, and the results are compared with the test results. The effectiveness of moment Zhang Liang theory in nondestructive testing of reinforced concrete structures is discussed. The results show that the technique of acoustic emission nondestructive testing based on moment Zhang Liang can quantitatively describe the crack mechanism of reinforced concrete flexural members. Good accuracy.
【作者單位】： 西安建筑科技大學土木工程學院;
【基金】：教育部“創(chuàng)新團隊發(fā)展建設”項目(IRT-17R84) 國家自然科學基金項目(51008244) 陜西省自然科學基礎研究計劃項目(2015JM5173)資助
【分類號】：TU375

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本文編號：1670878