預應力轉換大梁的設計與施工
梁為祥1 姚裕昌2 陳 剛3 鄒學理3 李建榮2 孫海輝2 羅 輝
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梁為祥1 姚裕昌2 陳 剛3 鄒學理3 李建榮2 孫海輝2 羅 輝1(1 廣東華工大建筑工程有限公司 510600; 2 南昌有色冶金設計研究院深圳分院 518032; 3 深圳市住宅局工程管理站 518000)
[提要] 在一高層住宅轉換梁的設計中,對處于使用和強度階段的轉換梁的節(jié)點狀態(tài)作了不同的考慮,達到經(jīng)濟與安全的統(tǒng)一,對分三批張拉的預應力轉換梁在各種荷載不利組合下的性能進行了計算,繪制了人比例配筋詳圖用于指導施工,在預應力張拉時對轉換梁進行了反拱測試,對同類工程有一定參考價值。
[關鍵詞] 預應力轉換梁 分批張拉 測試
During the pcriod of dcsigning the convcrsion girdcr, diffcrcnt joint situations have bccn considcrcd according to the two stagcs of scrviccability and strcngth so that the cffcct of consolidation bctwccn cconomy and safcty has bccn achicvcd. In ordcr to study the bchavior undcr various loads combination, calculation is conductcd to the prcstrcsscd convcrsion girdcr tcnscd for thrce phascs, and constructional dctails arc also drawn. Finally the invcrtcd arch of the bcam has bccn mcasurcd, and the conclusion prcscntcd will be practical to the similar projccts.
Keywords: prcstrcsscd concrctc; convcrsion girdcr; tcnsion; phascs; mcasuring