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陳灣大橋空心板預(yù)應(yīng)力張拉計(jì)算書(shū)-免費(fèi)閱讀

  

【正文】 (1405105) =53mmL=(++53)2=N2孔道:5 σk =1395Mpaab段 PP=P(1e(κχ+μθ))/(κχ + μθ) =976500(1 )/ =974551ab段L=PpL/APEP=(9745512665)247。(1405105) =bc段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =975857(1 )/ =966383bc段L=PpL/APEP =(9663831396)247。(1403105) =cd段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =573111(1 )/ =571186cd段L=PpL/APEP =(5711864487.5)247。④.孔道壓漿采用C50水泥漿。陳灣大橋空心板預(yù)應(yīng)力張拉計(jì)算書(shū)一、概況K0+061陳灣大橋其上部結(jié)構(gòu)16m、20m預(yù)制空心板,設(shè)計(jì)采用后張法施工工藝。由于本工程所使用的鋼絞線為低松弛鋼絞線,故采用張拉程序?yàn)椋ㄓ脩?yīng)力表示): 0→ → → →持荷5min→錨固式中:σk——錨下控制張拉應(yīng)力;σk ==1860=1395Mpa(主梁預(yù)應(yīng)力鋼束)為了防止主梁的側(cè)彎,每一根鋼束分3次張拉,采用對(duì)稱張拉。(1403105) =L=(+11+)2=參與計(jì)算的參數(shù)表3編號(hào)段落xθPN1ab879013951404=781200bc1396cd5528.50N2ab17700bc1571cd4487.50N1孔道:4 σk =1395Mpaab段 PP=P(1e(κχ+μθ))/(κχ + μθ) =781200(1 )/ =780685ab段L=PpL/APEP=(780685879)247。(1405105) =cd段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =966383(1 )/ =960947cd段L=PpL/APEP =(960947)247。(1405105) =19mmbc段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =974551(1 )/ =954544bc段L=PpL/APEP =(9545441571)247。(1405105) =cd段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =966383(1 )/ =960947c
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