矩形顶管施工引起的地表沉降研究

发布时间：2018-05-20 00:14

本文选题：矩形顶管 + 随机介质理论　；参考：《公路工程》2017年04期

【摘要】：在总结矩形顶管工程特点的基础上,采用随机介质理论计算了矩形顶管施工引起的地表沉降,并与Peck法进行对比。结果表明:随着顶管埋深增大,Peck法计算结果与均匀收敛模式下随机介质理论计算结果趋于一致,与不均匀收敛模式计算结果始终存在一定差值。在埋深比较大的情况下,圆形和矩形顶管施工引起的地表沉降趋于一致。顶管宽高比和间隙比的增大都会使沉降槽形状趋于宽而浅。与实测值的对比表明,随机介质理论计算结果比Peck法计算结果更接近实际情况。
[Abstract]:On the basis of summarizing the characteristics of rectangular pipe jacking engineering, the surface settlement caused by rectangular pipe jacking construction is calculated by using random medium theory, and compared with Peck method. The results show that the results of Peck method are consistent with the results of random medium theory under uniform convergence mode with the increase of pipe jacking depth, and there is always a certain difference between the results of Peck method and that of non-uniform convergence mode. The surface settlement caused by circular and rectangular pipe jacking tends to be the same when the buried depth is large. The width to height ratio and clearance ratio of the jacking pipe will make the shape of the settlement tank wider and shallower. The comparison with the measured results shows that the calculated results of the stochastic media theory are closer to the actual situation than that of the Peck method.
【作者单位】：中国水利水电第四工程局有限公司;浙江大学滨海和城市岩土工程研究中心;浙江大学软弱土与环境土工教育部重点实验室;
【基金】：中国工程院重点咨询项目(2015—XZ—16) 国家自然科学基金资助项目(51178420) 国家科技支撑计划项目(2012BAJ01B04—3)
【分类号】：P642.26;TU990.3

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