| 嘉绍通道长山河特大桥试桩静载试验研究 |
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| 引用本文： | 赵向阳,刁莹露,戴国亮,龚维明.嘉绍通道长山河特大桥试桩静载试验研究[J].科技通报,2012,28(9):147-150,154. |
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| 作者姓名： | 赵向阳 刁莹露 戴国亮 龚维明 |
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| 作者单位： | 1. 浙江秦山建设股份公司,嘉兴浙江,314300
2. 东南大学土木工程学院,南京,210096 |
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| 基金项目： | 国家自然科学基金资助项目，江苏省自然科学基金 |
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| 摘 要： | 嘉绍通道长山河特大桥位于嘉兴海宁市扬汇桥村,桥长1061 m。桩径1.8 m,桩长92 m,属于超长钻孔灌注桩。为了测定桩身的抗压极限承载力,对试桩采用自平衡测试法进行了静载试验。基于实测数据,对桩总承载力、桩侧摩阻力、桩端承载力、桩身变形、位移以及承载性能进行了分析,并将桩端承载力实测值和公路桥涵地基基础规范计算值进行了对比。研究表明桩侧摩阻力提供了大部分的承载力;施工工艺对超长桩承载力有很大影响;控制沉降同时也要控制桩身压缩变形。成功地确定了超长钻孔灌注桩的单桩极限承载力以及承载力性能,位移特征,可为类似工程参考。
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| 关 键 词： | 超长桩 自平衡测试法 摩阻力 端阻力 |
Study On The Static Load Test On The Piles Of Jiashao Tongdao Changshan River Bridge |
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| ZHAO Xiangyang
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DIAO Yinglu
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DAI Guoliang
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GONG Weiming.Study On The Static Load Test On The Piles Of Jiashao Tongdao Changshan River Bridge[J].Bulletin of Science and Technology,2012,28(9):147-150,154. |
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| Authors: | ZHAO Xiangyang DIAO Yinglu DAI Guoliang GONG Weiming |
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| Institution: | 1.Qinshan Construction Co.,Ltd.,Jiaxing 314300,China 2.School of Civil Engineering,Southeast University,Nanjing 210096,China) |
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| Abstract: | The JiaShao TongDao ChangShan River Bridge is loaded in YangHuiqiao Village HaiNing JiaXing City,which is 1061m long.The piles of the king tower foundation reaches 1.8 m in diameter and 92 m in pile length which belong to the super long bored piles.The program consists of self-balanced load test on a pile in static loading test for getting ultimate bearing capacity.Basing on the test results,the total bearing capacity of the piles,the side friction,the tip resistance,settlement,deformation of pile and the load carrying properties of the pile was analyzed.It presents that pile shaft resistance capacity provide s the most capacity,the construction technologies influence the bearing capacity of the super long piles,controlling settlement is as important as controlling the deformation of pile.This program successfully established single ultimate bearing capacity of super long bored pile and load carrying properties,verified Displacement characteristics,which can be referenced by similar project. |
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| Keywords: | super-long drilled pile self-balanced load test side friction tip resistance |
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