J Shanghai Jiaotong Univ Sci ›› 2024, Vol. 29 ›› Issue (5): 919-929.doi: 10.1007/s12204-022-2501-y
聂东清1,翟之阳1,张威1,李志2
收稿日期:
2021-05-19
接受日期:
2021-09-09
出版日期:
2024-09-28
发布日期:
2024-09-28
NIE Dongqing1∗ (聂东清), ZHAI Zhiyang1 (翟之阳), ZHANG Wei1 (张威), LI Zhi2 (李志)
Received:
2021-05-19
Accepted:
2021-09-09
Online:
2024-09-28
Published:
2024-09-28
摘要: 双排桩支护系统在中国深基坑工程中得到了广泛的应用。在软土地基地区,常对前后排桩桩间土进行改良,以减小双排桩的位移,但其改良效果研究较少。以某大深基坑为例,通过有限元分析与监测结果对比,讨论了前后排桩桩间土体改良的效果。在此基础上,采用考虑土体小应变的有限元法进行了双排桩参数化研究,探讨了前后排桩桩间改良土体的效果。结果表明:改良前后排桩桩间土后,桩身挠度和弯矩减小。同时,改善开挖水平周围的前后排桩桩间土是减小桩身挠度和弯矩的最有效途径。在桩顶以下2~4 m处进行前后排桩桩间土改良对减小桩挠度作用不大,在桩位移限制不是很严格的情况下可以消除。
中图分类号:
聂东清1, 翟之阳1, 张威1, 李志2. 双排桩桩间土加固影响的有限元分析[J]. J Shanghai Jiaotong Univ Sci, 2024, 29(5): 919-929.
NIE Dongqing1∗ (聂东清), ZHAI Zhiyang1 (翟之阳), ZHANG Wei1 (张威), LI Zhi2 (李志). Finite Element Analysis of Effects of Improvement of Soil Between Double-Row Piles[J]. J Shanghai Jiaotong Univ Sci, 2024, 29(5): 919-929.
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