低應變檢測樁身完整性

做好各項準(zhun)(zhun)備工(gong)作(zuo)，開始檢測(ce)；接上(shang)電(dian)源(yuan)，啟動(dong)采(cai)集(ji)器(qi)和微機(ji)，稍等片(pian)刻(ke)，微機(ji)自檢完(wan)(wan)畢(bi)，使(shi)(shi)之進(jin)入(ru)低應(ying)變測(ce)試狀(zhuang)態，屏幕上(shang)出(chu)現(xian)參數(shu)設(she)(she)置(zhi)(zhi)(zhi)表；通(tong)過微機(ji)鍵盤設(she)(she)置(zhi)(zhi)(zhi)合適的(de)(de)儀(yi)器(qi)工(gong)作(zuo)參數(shu)。然后使(shi)(shi)之進(jin)入(ru)采(cai)集(ji)信(xin)號狀(zhuang)態；通(tong)過微機(ji)鍵盤設(she)(she)置(zhi)(zhi)(zhi)合適的(de)(de)儀(yi)器(qi)工(gong)作(zuo)參數(shu)。然后使(shi)(shi)之進(jin)入(ru)采(cai)集(ji)信(xin)號狀(zhuang)態；使(shi)(shi)樁(zhuang)頂的(de)(de)傳感(gan)器(qi)和連線(xian)等安裝無(wu)誤，使(shi)(shi)儀(yi)器(qi)進(jin)入(ru)等待采(cai)集(ji)信(xin)號狀(zhuang)態；用擊錘垂直激(ji)振樁(zhuang)頂，使(shi)(shi)儀(yi)器(qi)觸發，屏幕上(shang)出(chu)現(xian)樁(zhuang)體振動(dong)的(de)(de)時(shi)域波(bo)(bo)形(xing)(xing)(xing)曲(qu)線(xian)；可(ke)以(yi)通(tong)過鍵盤操作(zuo)，對波(bo)(bo)形(xing)(xing)(xing)幅度進(jin)行調整；通(tong)過對時(shi)域波(bo)(bo)形(xing)(xing)(xing)的(de)(de)形(xing)(xing)(xing)態及(ji)頻域分析(xi)，初步分析(xi)被(bei)測(ce)樁(zhuang)的(de)(de)完(wan)(wan)整性，并(bing)決(jue)定時(shi)域波(bo)(bo)形(xing)(xing)(xing)曲(qu)線(xian)是(shi)(shi)存盤還是(shi)(shi)清除重測(ce)。必要時(shi)，可(ke)對時(shi)域波(bo)(bo)形(xing)(xing)(xing)進(jin)行較詳細(xi)的(de)(de)分析(xi)、處(chu)理和判斷(duan)。當出(chu)現(xian)異常波(bo)(bo)形(xing)(xing)(xing)時(shi)，應(ying)改變傳感(gan)器(qi)和錘擊點位(wei)置(zhi)(zhi)(zhi)，取得更(geng)多的(de)(de)波(bo)(bo)形(xing)(xing)(xing)圖，以(yi)便更(geng)準(zhun)(zhun)確的(de)(de)分析(xi)。通(tong)過資料分析(xi)，判別有無(wu)斷(duan)裂、離(li)析(xi)、夾泥或(huo)縮(suo)徑等缺陷(xian)、并(bing)確定其部位(wei)，判別樁(zhuang)長(chang)及(ji)混凝土質量(liang)是(shi)(shi)否滿足設(she)(she)計要求，對單樁(zhuang)完(wan)(wan)整性做出(chu)評(ping)價(jia)。