碎石土强夯加固效果荷载试验分析

黄达; 金华辉; 吴雄伟

doi:10.3969/j.issn.0258-2724.2013.03.007

碎石土强夯加固效果荷载试验分析

doi: 10.3969/j.issn.0258-2724.2013.03.007

黄达^1,2,
金华辉^1,3,
吴雄伟³

基金项目:

教育部创新团队发展计划资助项目(IRT1045)

中央高校基本科研业务费重点项目(CDJZR12 20 55 01)

中国博士后科学基金特别资助项目(201003315)

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出版历程
- 收稿日期: 2012-08-30
- 刊出日期: 2013-06-25

Plate Load Test Investigation of Dynamic Compaction Effect of Gravel Soil

摘要

摘要: 为探讨碎石含量及其分布对强夯地基承载力和差异沉降的影响规律,采用平板荷载试验,对3种不同碎石含量强夯地基的加固效果进行了检测.结果表明:碎石土强夯地基具有较好的承载力,平均承载力均超过250 kPa;随碎石含量增加和分布不均匀性增强,地基承载力的不均匀性增强,差异沉降增大;对于碎石含量较高且分布不均的强夯地基,当荷载接近或达到地基承载力以后,将出现更大的差异沉降;对于重庆市开县某强夯地基,不同碎石含量可导致强夯地基的差异沉降量相差3~4倍.
- 强夯地基 /
- 碎石土 /
- 不均匀性 /
- 载荷试验 /
- 差异沉降
Abstract: In order to deeply probe into influences of gravel content and distribution on bearing capacity and differential settlement, 18 plate loading tests were carried out on 3 dynamic compaction foundations with different gravel contents. The research result shows that the dynamic compaction foundation of gravel soil has a better bearing capacity with a mean of above 250 kPa. The non-uniform bearing capacity and differential settlement of foundation are more obvious with the increase of gravel content and uneven distribution. For dynamic compaction foundation with a high gravel content and uneven distribution, great differential settlement occurs when load is close to or reaches at its bearing capacity. The differential settlement can be as large as 3 to 4 times because of the difference of grave content of a dynamic compaction foundation in Kai County in Chongqing.
- dynamic compaction foundation /
- gravel soil /
- non-uniformity /
- load test /
- differential settlement

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参考文献(15)

丁振洲,陆新,郑颖人. 山区地基强夯加固机理探讨[C]//中国土木工程学会第九届土力学及岩土工程学术会议论文集. 北京:清华大学出版社,2003: 802-806.

甘厚义,周虎鑫,林本銮,等. 关于山区高填工程地基处理问题[J]. 建筑科学,1998,14(6): 16-22.GAN Houyi, ZHOU Huxin, LIN Benxin, et al. Research into the treatment of high filled up ground with large stones in mountain areas[J]. Building Science, 1998, 14(6): 16-22.

周德泉,张可能,刘宏利,等. 强夯加固填土的效果与机理分析[J]. 中南大学学报:自然科学版,2004,35(2): 321-326.ZHOU Dequan, ZHANG Keneng, LIU Hongli, et al. Analyses on the results and mechanism of dynamic compactness to fill foundation[J]. Journal of Central South University of Technology, 2004, 35(2): 321-326.

谢春庆. 山区机场高填方块碎石夯实地基性状及变形研究[D]. 成都:成都理工大学环境与土木工程学院,2001.

谢春庆,刘汉超,甘厚义. 高填方块碎石夯实地基变形的研究[J]. 岩土工程学报,2002,24(1): 38-41.XIE Chunqing, LIU hanchao, GAN Houyi. Study on deformation of ground under high fill of block and detritus[J]. Chinese Journal of Geotechnical Engineering, 2002, 24(1): 38-41.

赵炼恒,李亮,何长明,等. 土石混填路堤强夯加固范围研究[J]. 中国公路学报,2008,21(1): 13-19.ZHAO Lianheng, LI Liang, HE Changming, et al. Study of reinforcement range of dynamic compaction in soil-stone material embankment[J]. China Journal of Highway and Transport, 2008, 21(1): 13-19.

罗恒,邹金锋,李亮,等. 红砂岩碎石土高填方路基强夯加固时的动应力扩散及土体变形试验研究[J]. 岩石力学与工程学报,2007,26(增刊1): 2701-2706.LUO Heng, ZOU Jinfeng, LI Liang, et al. Test study on soil dynamic stress diffusion and deformation during dynamic compaction in roadbed primed with large granule red sandstone[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(Sup.1): 2701-2706.

何兆益,周虎鑫,张弛. 山区机场高填方土石混填强夯参数的现场试验研究[J]. 公路交通科技,2002,19(4): 30-32.HE Zhaoyi, ZHOU Huxin, ZHANG Chi. Soil-stone filling high embankment impact compaction parameter field test study for mountain area airport[J]. Journal of Highway and Transportation Research and Development, 2002, 19(4): 30-32.

水伟厚,王铁宏,王亚凌,等. 碎块石回填地基上10 000 kNm高能级强夯标准贯入试验[J]. 岩土工程学报,2006,28(10): 1309-1312.SHUI Weihou, WANG Tiehong, WANG Yaling, et al. SPT for dynamic compaction with 10 000 kNm high energy on foundation backfilled with crushed stone[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(10): 1309-1312.

王铁宏,水伟厚,王亚凌,等. 10 000 kNm高能级强夯时的地面变形与孔压试验研究[J]. 岩土工程学报,2005,27(7): 1090-1093.WANG Tiehong, SHUI Weihou, WANG Yaling, et al. Experimental research on the ground deformation and porewater pressure during 10 000 kNm high energy level dynamic compaction[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(7): 1090-1093.

高广运,水伟厚,王亚凌,等. 高能级强夯在大型石化工程中的应用[J]. 岩土力学,2004,25(8): 1275-1278.GAO Guangyun, SHUI Weihou, WANG Yaling, et al. Application of high energy level dynamic compaction to high-capacity oil tank foundation[J]. Rock and Soil Mechanics, 2004, 25(8): 1275-1278.

水伟厚,王铁宏,王亚凌. 高能级强夯地基土载荷试验研究[J]. 岩土工程学报,2007,29(7): 1090-1093.SHUI Weihou, WANG Tiehong, WANG Yaling. PLT for high energy dynamic compaction of foundation backfilled with crushed stone[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(7): 1090-1093.

年廷凯,水伟厚,李鸿江,等. 沿海碎块石回填地基上高能级强夯系列试验对比研究[J]. 岩土工程学报,2010,23(7): 1029-1034.NIAN Tingkai, SHUI Weihou, LI Hongjiang, et al. Field tests of high energy dynamic compaction on foundation backfilled by crushed stone in coastal area[J]. Chinese Journal of Geotechnical Engineering, 2010, 23(7): 1029-1034.

黄达,金华辉. 土石比对碎石土强夯地基加固效果影响规律瑞利波检测分析[J]. 岩土力学,2012,33(10): 3067-3072.HUANG Da, JIN Huahui. Influences of soil-rock ratio on foundation with detritus soil under dynamic compaction based on Rayleigh wave detection[J]. Rock and Soil Mechanics, 2012, 33(10): 3067-3072.

中国建筑科学研究院. JGJ792002 建筑地基处理技术规范[S]. 北京:中国建筑工业出版社,2002.

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文章访问数: 1063
HTML全文浏览量: 54
PDF下载量: 398
被引次数: 0

碎石土强夯加固效果荷载试验分析

doi: 10.3969/j.issn.0258-2724.2013.03.007

计量

出版历程

Plate Load Test Investigation of Dynamic Compaction Effect of Gravel Soil

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出版历程

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