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     王永生
    （西安建筑科技大學(xué) 718855）

[提要]  就H形斷面鋼柱在循環(huán)荷載作用下，對(duì)危險(xiǎn)點(diǎn)處的應(yīng)變累積史及整體承載力進(jìn)行了全過(guò)程試驗(yàn)分析，獲得了幾個(gè)重要狀態(tài)下的應(yīng)變累積值，為鋼結(jié)構(gòu)的塑性設(shè)計(jì)及選擇理論計(jì)算模型提供了有價(jià)值的參考資料。同時(shí)還解決了交變性大應(yīng)變的測(cè)試方法。
[關(guān)鍵詞]  鋼結(jié)構(gòu)  H型柱 循環(huán)荷載 應(yīng)變累積 云紋法 膠性超微粒光柵

The complete process experimental analysis of strain cumulation history and bearing capacity of dangerous point of H-cross-section steel pillar under cyclic load has been completed. The several strain cumulation numbers with differeret key condition were obtained. The results provide the basis reference for optimizing the plastic design of steel structure and choice of mathematical model. At the same time, measurement methods of cycle large strain have been solved.
Keywords: steel  structures; cyclic  loads; strain  cumulation; moire  method; gluey superparticle  grating