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陳灣大橋空心板預(yù)應(yīng)力張拉計(jì)算書(shū)-全文預(yù)覽

  

【正文】 04105) =cd段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =773106(1 )/ =769909cd段L=PpL/APEP =(7699095528.5)247。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。②.施加預(yù)應(yīng)力應(yīng)采用張拉力與伸長(zhǎng)量雙控。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。并采用兩端同時(shí)張拉。④.孔道壓漿采用C50水泥漿。(1404105) =bc段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =780685(1 )/ =773106bc段L=PpL/APEP =(7731061396)247。(1403105) =cd段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =573111(1 )/ =571186cd段L=PpL/APEP =(5711864487.5)247。(1404105) =39mmL=(++39)2=N2孔道:4 σk =1395Mpaab段 PP=P(1e(κχ+μθ))/(κχ + μθ) =781200(1 )/ =780164ab段L=PpL/APEP=(7801641770)247。(1405105) =bc段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =975857(1 )/ =966383bc段L=PpL/APEP =(9663831396)247。(1404105) =11mmcd段PP=P(1e(κχ+μθ))/(κχ + μθ)=192063 =763635(1 )/ =760417cd段L=PpL/APEP =(7604175603.5)247。(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。1千斤頂 =+2千斤頂 =五、預(yù)制空心板張拉匯總表16m空心板伸長(zhǎng)量、油表讀數(shù)匯總表(含回
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