斜拉橋索塔錨固區(qū)節(jié)段足尺模型試驗與分析
郭凡，楊永清，周厚斌，劉國軍
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郭凡，楊永清，周厚斌，劉國軍（西南交通大學土木工程學院，成都 610031）[摘要] 對某斜拉橋索塔錨固區(qū)節(jié)段建立有限元計算模型進行空間應力分析，并與足尺模型試驗得出的結(jié)果相比較，對該橋塔錨固區(qū)工作性能及安全性進行評價。測試分析U形塑料波紋管孔道摩阻系數(shù)和鋼束伸長值，研究了小半徑環(huán)向U形預應力束與拉索作用下的錨固區(qū)應力與變形情況，提出構(gòu)造及設計上的建議，為設計與施工提供依據(jù)，也可為同類斜拉橋索塔錨固區(qū)的受力分析提供借鑒。[關鍵詞] 斜拉橋；索塔錨固區(qū)；應力；有限元分析；足尺模型試驗中圖分類號：U443-38文獻標識碼：A文章編號：1002-848X(2012)10-0071-04Test and analysis on full scale segmental model of cable tower anchorage zone in cable stayed bridgeGuo Fan, Yang Yongqing, Zhou Houbin, Liu Guojun(School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China)Abstract: A FEM model of the cable tower anchorage zone section in certain cable stayed bridge was built to analyze the spatial stress field, and the values obtained by spatial stress analysis and full scale model test were compared. The evaluation of the operating capability and safety of the bridge tower was brought forward. The frictional coefficient values of the U-shaped plastic corrugated pipes and the extension values of tendons were analyzed. Stress distribution and deformation under U-shaped and small radius ring prestressed tendons and cable force were investigated. Some suggestions about constitution and design were given to similar force analysis of cable tower anchorage zone as references.Keywords: cable stayed bridge; cable tower anchorage zone; stress; FEM analysis; full scale model test作者簡介：郭凡，博士研究生，Email：guofandr@163.com。參考文獻［1］廣東省建筑科學研究院. 深圳東海商務中心二期風致結(jié)構(gòu)荷載分析報告［R］.廣州，2008.［2］GB 50011—2001建筑抗震設計規(guī)范 ［S］. 2008年版. 北京：中國建筑工業(yè)出版社，2008.［3］JGJ 3—2002高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程 ［S］. 北京：中國建筑工業(yè)出版社，2002.［4］ISO 10137 Bases for design of structures -Serviceability of buildings and walkways against vibrations ［S］. 2nd ed. International Standard Organization, 2007.［5］馬暉，杜平，馮向華，等. 深圳東海超高層連體公寓塔樓風振舒適度研究［J］. 建筑結(jié)構(gòu)，2012，42(S1): 424-428.
