深厚淤泥地基中高路堤桥台基桩工作性状的现场实测与分析

›› 2011, Vol. 32 ›› Issue (11): 3333-3340.

深厚淤泥地基中高路堤桥台基桩工作性状的现场实测与分析

岳健，冷伍明，聂如松，杨奇

中南大学土木工程学院，长沙 410075

收稿日期:2010-05-30 出版日期:2011-11-01 发布日期:2011-11-09
作者简介:岳健，男，1978年生，博士研究生，主要从事桩基工程方面的研究工作
基金资助:
国家自然科学基金资助项目(No. 50678175)；中央高校科研基本业务费(No. 2011QNZT106)

Field measurement and analysis of working properties of abutment pile in deep silt foundation

YUE Jian，LENG Wu-ming，NIE Ru-song，YANG Qi

School of Civil Engineering, Central South University, Changsha 410075, China

Received:2010-05-30 Online:2011-11-01 Published:2011-11-09

摘要/Abstract

摘要： 针对位于深厚淤泥地基上的高路堤桥台的冲孔灌注桩，进行了1.5 a的现场实测，测试了修筑承台前、修筑桥台期间、邻近过渡段的路基填土期间、过渡段的路基填土期间及跨梁修筑后的桩身应变和桩侧土体孔隙水压力，也测试了基桩的挠曲变形和桥台的倾斜变形，基于实测结果对基桩的受力变形性状进行研究。结果表明，桥台基桩在承受上部结构荷载以前就产生了压缩变形；在上部桥台和台后填土的共同作用下，桩身前后侧的轴向应变虽都表现为压应变，但应变值相差较大；台后路基填土完成后，桩身最大负弯矩出现在淤泥层浅部，最大正弯矩出现在软硬土层交界处，桥台发生较小倾斜；跨梁的修筑使桥台台身又恢复到竖直状态。

关键词: 深厚淤泥地基, 高路堤, 桥台基桩, 工作性状, 现场实测, 填土

Abstract: The field measurement had been performed for one and a half years, which was aiming at the impact-cone concrete piles of the bridge abutments on the deep silt foundation. Before constructing the pile cap, during the period of building the abutment, constructing embankment near the transition section, constructing embankment of the transition section and after building the span beam, the abutment pile strain and the pore water pressure on pile side had been tested; and the pile deflection and the abutment inclination had been observed. Based on the measured data，the stress and deformation properties of the abutment pile are analyzed. The results show that: the abutment pile is compressed before constructing the pile cap; due to the interaction of superstructure and earth filling, the compressive strain of the front side of the pile body is remarkably different from that of the back side; after finishing subgrade filling, the maximum negative bending moment of the pile appears in the shallow position of the silt layer; and the maximum positive bending moment appears in the soft-hard soil juncture; the abutment inclination is rectified after constructing the span beam.

Key words: deep silt foundation, high embankment, abutment pile, working properties, field measurement, earth fill

中图分类号:

TU 473

岳健，冷伍明，聂如松，杨奇. 深厚淤泥地基中高路堤桥台基桩工作性状的现场实测与分析[J]. , 2011, 32(11): 3333-3340.

YUE Jian，LENG Wu-ming，NIE Ru-song，YANG Qi. Field measurement and analysis of working properties of abutment pile in deep silt foundation[J]. , 2011, 32(11): 3333-3340.

参考文献

相关文章 15

[1]	刘洋, 于鹏强. 刚性挡土墙平移模式的土拱形状与主动土压力分析[J]. 岩土力学, 2019, 40(2): 506-516.
[2]	吴昌将, 孙召花, 赖允瑾, 包华, . 软土地区地下连续墙深大基坑的变形性状研究[J]. 岩土力学, 2018, 39(S2): 245-253.
[3]	吴建涛, 叶霄, 李国维, 蒋超, 曹雪山, . 高路堤下PHC桩加固软土地基的承载及变形特性[J]. 岩土力学, 2018, 39(S2): 351-358.
[4]	欧孝夺，潘鑫，侯凯文，江杰，柳子炎，. 广西北部湾人造陆域吹填土电冲击特性研究[J]. , 2018, 39(S1): 348-354.
[5]	杨琪，张友谊，刘华强，秦华，. 一种气泡轻质土路基受载-破坏模型试验[J]. , 2018, 39(9): 3121-3129.
[6]	乐绍林，柏巍，吴名江，林融冰，陈进，赵亚峰,. 泥砂互混吹填土自重沉积及颗粒分布规律[J]. , 2017, 38(S1): 233-239.
[7]	叶飞，宋京，唐勇三，林剑飞，贾涛，. 软弱围岩隧道掌子面及超前核心土挤出位移特征研究[J]. , 2017, 38(S1): 323-330.
[8]	黄朝煊，王正中，方咏来,. 考虑漏气及井阻非线性的真空预压地基固结解析解[J]. , 2017, 38(9): 2574-2582.
[9]	郑帅群，周海祚，郑刚 , . 压实填土地基承载力深度修正系数研究[J]. , 2016, 37(11): 3240-3252.
[10]	雷华阳，李宾，仇王维，卢海滨，任倩，. 吹填场区软黏土地基的次固结特性研究[J]. , 2015, 36(S1): 120-124.
[11]	熊勇，罗强，张良，蒋良潍，朱江江. 基于小型平板载荷试验的粉质黏土变形演化状态特征分析[J]. , 2015, 36(9): 2560-2568.
[12]	欧孝夺，潘鑫，殷宪太，侯凯文 , . 广西北部湾人造陆域吹填土生物固结试验研究[J]. , 2015, 36(1): 28-33.
[13]	姜晓婷，路平，郑刚，崔玉娇，崔涛 , . 天津软土地区盾构掘进对上方建筑物影响分析[J]. , 2014, 35(S2): 535-542.
[14]	康景文，毛坚强，许建，姚文宏，章学良，李可一，. 填土场地桩基负侧摩阻力设计计算方法试验研究[J]. , 2014, 35(S2): 25-29.
[15]	刘涛，赵松壮，孙付峰，. 上软下硬地层浅埋大跨度车站拆撑安全性分析[J]. , 2014, 35(S1): 306-310.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed