本文選題：葫蘆形　切入點：錨碇基坑　出處：《公路工程》2017年01期

【摘要】：針對岳陽洞庭湖大橋錨碇葫蘆形基坑的幾何特點,合理布置監(jiān)測點,并確定各監(jiān)測項目的監(jiān)測頻率與預警值。結合現(xiàn)場監(jiān)測數據,探討了圍護結構深層水平位移、墻體鋼筋應力和墻頂變形等實測值的變化規(guī)律。分析表明:葫蘆形地下連續(xù)墻單圓直徑比圓形地連墻小,可較好發(fā)揮圓拱效應;中部的中隔墻提高了地連墻的局部剛度,減小了中部的位移量;葫蘆形地下連續(xù)墻的側向位移呈明顯的"S"形變化。由實測結果分析可知,葫蘆形地連墻整體設計方案合理,效果良好,內力與變形均可滿足規(guī)范要求。
[Abstract]:According to the geometric characteristics of the hoist shaped foundation pit of the Dongting Lake Bridge in Yueyang, the monitoring points are reasonably arranged, and the monitoring frequency and early warning value of each monitoring project are determined.Based on the field monitoring data, the variation rules of measured values such as deep horizontal displacement, stress of wall reinforcement and deformation of roof of wall are discussed.The analysis shows that the single circle diameter of the hoist diaphragm wall is smaller than that of the circular ground connecting wall, and the circular arch effect can be better brought into play, and the local stiffness of the ground connecting wall is improved and the displacement of the middle part of the wall is reduced by the middle partition wall.The lateral displacement of the hyacinth diaphragm wall shows obvious "S" shape change.From the analysis of the measured results, it can be seen that the overall design scheme of the hoist earth connecting wall is reasonable, the effect is good, and the internal force and deformation can meet the requirements of the code.
【作者單位】： 長沙理工大學土木與建筑學院;珠海市規(guī)劃設計研究院;湖南省交通規(guī)劃勘察設計院;
【基金】：交通運輸部建設科技項目資助(2013318798320)
【分類號】：U445.55
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本文編號：1712211