水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
6期
137-140
,共4页
拉索%张力%环境%刚度%垂度%边界条件
拉索%張力%環境%剛度%垂度%邊界條件
랍색%장력%배경%강도%수도%변계조건
cable%tension%environmental considerations%stiffness%sag%boundary condition
南水北调中线工程常选用中、下承式拱桥或斜拉桥作为跨渠大桥。拉索是大跨中、下承式拱桥或斜拉桥中重要构件。拉索的张力对全桥的内力分布有重要影响，并反映了桥梁的健康状况。介绍了拉索张力测试方法特点与拉索张力影响因素。从考虑环境因素、改进刚度识别、考虑垂度和斜度、改进数据处理技术、拉索等效长度、数值分析与曲线拟合、考虑边界条件等方面介绍了提高拉索张力测试精度考虑因素，最后，对拉索张力测试研究可能的热点问题进行了一定的展望。
南水北調中線工程常選用中、下承式拱橋或斜拉橋作為跨渠大橋。拉索是大跨中、下承式拱橋或斜拉橋中重要構件。拉索的張力對全橋的內力分佈有重要影響，併反映瞭橋樑的健康狀況。介紹瞭拉索張力測試方法特點與拉索張力影響因素。從攷慮環境因素、改進剛度識彆、攷慮垂度和斜度、改進數據處理技術、拉索等效長度、數值分析與麯線擬閤、攷慮邊界條件等方麵介紹瞭提高拉索張力測試精度攷慮因素，最後，對拉索張力測試研究可能的熱點問題進行瞭一定的展望。
남수북조중선공정상선용중、하승식공교혹사랍교작위과거대교。랍색시대과중、하승식공교혹사랍교중중요구건。랍색적장력대전교적내력분포유중요영향，병반영료교량적건강상황。개소료랍색장력측시방법특점여랍색장력영향인소。종고필배경인소、개진강도식별、고필수도화사도、개진수거처리기술、랍색등효장도、수치분석여곡선의합、고필변계조건등방면개소료제고랍색장력측시정도고필인소，최후，대랍색장력측시연구가능적열점문제진행료일정적전망。
The cable-stayed bridge or half through and through arch bridge are commonly selected as the cross ditch bridge in the central line of South to North Water Diversion Project .The cables are the most important components of a big span cable-stayed bridge or half through and through arch bridge .The tensions of the cables have great influence on the distribution of the internal forces of the whole bridge which reflects the health of the bridge .The test methods ,char-acteristics and influencing factors of the cable tension were described in the study .Meanwhile ,the measures of improving test precision were introduced from seven respects ,including the environmental considerations ,improvement of stiffness identification ,consideration of sag and slope ,improvement of data processing technology ,equivalent length of the cable , numerical analysis and curve fitting as well as consideration of the boundary conditions .Finally ,the possible hot issues in studies of cable tension test technology were forecasted .
