884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 湖北工業(yè)大學(xué)土木工程與建筑學(xué)院，武漢 430068； 2 廊坊市中鐵物探勘察有限公司東南項(xiàng)目部，泉州 362005）
［摘要］結(jié)合某客運(yùn)專(zhuān)線(xiàn)雙線(xiàn)整孔簡(jiǎn)支箱梁的孔道摩阻損失試驗(yàn)，介紹了預(yù)應(yīng)力束摩阻損失的試驗(yàn)方法，利用最小二乘法對(duì)測(cè)試數(shù)據(jù)進(jìn)行處理，得到了摩阻損失系數(shù)μ和κ的計(jì)算公式及其實(shí)測(cè)結(jié)果。結(jié)果表明曲線(xiàn)梁的κ值比直線(xiàn)梁的大，我國(guó)橋涵施工規(guī)范關(guān)于μ值的規(guī)定過(guò)于嚴(yán)格，預(yù)應(yīng)力損失參數(shù)μ，κ值應(yīng)在正式施加預(yù)應(yīng)力之前由現(xiàn)場(chǎng)試驗(yàn)確定，以此作為預(yù)應(yīng)力混凝土結(jié)構(gòu)的設(shè)計(jì)和施工的參考依據(jù)。
［關(guān)鍵詞］摩阻損失；預(yù)應(yīng)力束；最小二乘法；摩阻系數(shù)；曲線(xiàn)梁
Research on attrition loss of prestress wire with space curve
Su Jun1, Dou Jun1, You Xiaoyue2（1 Department of Civil Engineering of Hubei University of Technology, Wuhan 430068, China; 2 Project Department of Dongnan, Zhongtie Geophysical Prospecting Reconnaissance Co.,Ltd., Quanzhou 362005, China）
Abstract:The experimental method to determine the attrition loss of prestress wire is introduced, combining with the tube frictional resistance loss measurement of single room simple box girders in double lines of a special railway. The data are processed by the least square method, and the calculation formula for frictional factors,μandκ, is obtained. The results show the frictional factorκof curved beams is a little larger than that of straight lined beams, the fixed frictionalμin Chinese national standard is extremely strict, the frictional factorsκandμshould be determined according to the spot experiment before exerting prestress. These parameters obtained provide the foundation for the prestress concrete structure design and construction.
Keywords:attrition loss； prestress wire; least square method; attrition parameters; curved bridge
作者簡(jiǎn)介：蘇駿，博士，副教授，Email:sunjun930@163.com。
參考文獻(xiàn)
［1］鄒煥祖,劉自明.預(yù)應(yīng)力混凝土空間長(zhǎng)鋼絞線(xiàn)束孔道摩阻損失的測(cè)試方法［J］.橋梁建設(shè)，1993(4).
［2］JTJ041—2000公路橋涵施工技術(shù)規(guī)范［S］.
［3］TB10203—2002鐵路橋涵施工規(guī)范［S］.
［4］劉永前，張彥兵，王新敏.后張梁管道摩阻損失測(cè)試技術(shù)與數(shù)據(jù)處理［J］.中國(guó)安全科學(xué)學(xué)報(bào),2005,15（1）.
［5］黃棠,王效通.結(jié)構(gòu)設(shè)計(jì)原理［M］.北京:中國(guó)鐵道出版社,1980.
［6］邵容光,夏淦.混凝土彎梁橋［M］.北京:人民交通出版社,1994.
［7］郭宏偉.空間曲線(xiàn)管道摩阻損失的測(cè)試及探討［J］.橋梁,2005(8).
［8］鐘銘,李文會(huì),袁長(zhǎng)卿.曲線(xiàn)梁預(yù)應(yīng)力束摩阻損失計(jì)算［J］.石家莊鐵道學(xué)院學(xué)報(bào),1998,11(4).