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    劉軍進(jìn)    呂志濤
    （東南大學(xué)土木工程學(xué)院  南京 210096）

[提要]  在金山大廈預(yù)應(yīng)力鋼骨混凝土轉(zhuǎn)換梁內(nèi)埋設(shè)鋼弦式應(yīng)力計(jì)進(jìn)行施工全過程跟蹤實(shí)測(cè)，實(shí)測(cè)結(jié)果與設(shè)想結(jié)果之間存在顯著差異。理論分析表明，轉(zhuǎn)換層上部結(jié)構(gòu)超過一定高度后，考慮混凝土收縮和徐變引起的轉(zhuǎn)換梁應(yīng)力下降的理論值與實(shí)測(cè)值吻合較好。并對(duì)轉(zhuǎn)換梁的長(zhǎng)期跟蹤實(shí)測(cè)和分析提出了建議。
[關(guān)鍵詞]  預(yù)應(yīng)力  鋼骨混凝土粱  轉(zhuǎn)換梁  實(shí)測(cè)  鋼弦式應(yīng)力計(jì)

The prestressed steel R.C.transfer beam of Jinshan mansion was tested during the whole construction procedure with the steel-chord stress meters held in predetermined positions. Through theoretic analysis, the reason was found to explain the great differences between the test results and predicting results. Some suggestions were put forward about testing and analyzing of transfer beam.
Keywords: prestressed steel reinforced concrete beam; transfer beam; test; steel-chord stress meter