外墙围袋装砂土地基室内模型试验研究
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摘要
为了进一步研究袋装砂土地基承载特性,通过开展外墙围袋装砂土地基室内模型试验,对砂袋数量、摆放形式以及墙式加固体进行试验研究。试验通过对不同摆放形式的砂袋地基进行对比分析,总结各组试验的荷载与沉降变化规律,并与原摩擦性袋装砂土地基试验的最优组进行比较,验证了混凝土墙式加固体的加固效果。试验结果表明,在加固体约束的条件下,其荷载与沉降曲线、地基的不均匀沉降曲线及破坏后沉降分布曲线均满足实际要求,是一种较为可靠的地基加固技术。
In order to further study the load characteristics of sandbags foundation,the laboratory model tests of sandbags foundation within the outside walls were carried out to investigate the number of sandbags,the storage of packed and the reinforcement of external walls. The tests focused on the analysis of the different storage of sandbags,and measured the change of load and settlement of each test. Then compared with the optimal group of the original friction type sandbags reinforcement foundation tests,it verifies the reinforcement effect of the concrete solid walls. The results show that under the constraint of solid walls,the load and settlement curves,the uneven settlement curves of the foundation,and the post-failure settlement distribution curves are suitable for the actual requirements,therefore it is a reliable technique of foundation reinforcement.
In order to further study the load characteristics of sandbags foundation,the laboratory model tests of sandbags foundation within the outside walls were carried out to investigate the number of sandbags,the storage of packed and the reinforcement of external walls. The tests focused on the analysis of the different storage of sandbags,and measured the change of load and settlement of each test. Then compared with the optimal group of the original friction type sandbags reinforcement foundation tests,it verifies the reinforcement effect of the concrete solid walls. The results show that under the constraint of solid walls,the load and settlement curves,the uneven settlement curves of the foundation,and the post-failure settlement distribution curves are suitable for the actual requirements,therefore it is a reliable technique of foundation reinforcement.
引文
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14 Shin EC,Oh YI. Consolidation process geotextile tube filled with fine-grained materials[J]. Internation Journal of Offshore and Polar Engineerin,2003,14(1):1-9
15 Cantre S. Geotexitile tubes-analytical design aspects[J]. Geotexitiles and Geomembrances,2002,20:305-319
16 李伟,边宏亮,王成元.袋装砂土堆放形式对地基承载性能影响模型试验研究[J].施工技术,2016,45(15):104-108Li Wei,Bian Hongliang,Wang Chengyuan. Model testing for influence of packed sand storage form on foundation bearing capacity[J]. Construction Technlogy,2016,45(15):104-108
17 白福青,刘斯宏,王艳巧,等.土工袋加固原理与极限强度的分析研究[J].岩土力学,2010,31(1):172-176Bai Fuqing,Liu Sihong,Wang Yanqiao,et al. Research on reinforcement mechanism and failure strength of soildbags[J]. Rock and Soil Mechanics,2010,31(1):172-176
18 章伟,王法精,张瑞仁.“土袋”在日本软土地基加固中的应用于分析[J].青岛建筑工程学院学报,2005,26(2):10-13Zhang Wei,Wang Fajing,Zhang Ruiren. Application and analysis of a new earth Reinforcement Method by Soilbags[J]. Journal of Qingdao Insitue of Architecture and Engineering,2005,26(2):10-13
19 Shin EC,Oh YI. Analysis of geotextile tube behavior by large scale field model tests[J]. Geosynthetics International,2003,10(1):134-141
20 Ieshchinsky D,Leshchisky O,Ling I H,et al. Geosynthetic tubes for confining pressurized slurry-some design aspects[J]. Journal of Geotechnical Engineering,1996,122(2):682-690
2 刘斯宏,薛向华,樊科伟,等.工袋柔性挡墙位移模式及土压力研究[J].岩土工程学报,2014,12(36):2267-2273Liu Sihong,Xue Xianghua,Fan Kewei,et al. Study on the earth pressure and deformationmode of a retaining wall constructed with soilbags[J]. Chinese Journal of Geotechnical Engineering,2014,12(36):2267-2273
3 刘斯宏,王艳巧,金远征.土工袋基础减隔震试验[J].水利水电科技进展,2012,32(1):87-90Liu Sihong,Wang Yanqiao,Jin Yuanzheng. Experimental study on vibration reduction and isolation of bases with soilbag[J]. Advances in Science and Technology of Water Resources,2012,32(1):87-90
4 刘斯宏,高军军,王艳巧.土工袋减振隔振机制分析及试验研究[J].岩土力学,2015,36(2):325-332Liu Sihong,Gao Junjun,Wang Yanqiao. Mechanism analysis and experimental study of vibration reduction and isolationb effect geotextile bag[J]. Rock and Soil Mechanics,2015,36(2):325-332
5 高军军,刘斯宏,白福清.袋装淤泥土土工袋的强度变形研究[J].三峡大学学报(自然科学版),2014,36(1):33-36Gao Junjun,Liu Sihong,Bai Fuqing. Experimental study of strength and deformation properties of soilbags filled with mud soil[J]. Journal of China Three Gorges University(Natural Sciences),2014,36(1):33-36
6 张仪萍,王淼,刘伟超.摩擦填料作用下土工充砂袋充填特性[J].江南大学学报,2012,11(2):194-198Zhang Yiping,Wang Miao,Liu Weichao. Study on the characteristics of geotextile tube and fillings with friction[J]. Journal of Jiangnan University,2012,11(2):194-198
7 张仪萍,王洋.非瞬时加载下土工袋装砂石桩复合地基固结解析解[J].岩土力学与工程学报,2011,30(1):3096-3112Zhang Yiping,Wang Yang. Analytical solution for composite ground with geosynthetic encased column under time-dependent loading[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(1):3096-3112
8 刘玲君,刘斯宏,徐小东,等.袋内材料对土工袋动力特性参数影响的试验研究[J].岩土力学,2015,36(1):131-137Liu Lingjun,Liu Sihong,Xu Xiaodong,et al. Experimental study of effects soil fills on dynamic characteristics paramenters of soilbags[J]. Rock and Soil Mechanics,2015,36(1):131-137
9 刘玲君,刘斯宏,徐小东,等.土工袋挡土墙动力特性影响因素试验[J].水利水电科技进展,2015,35(6):41-46Liu Lingjun,Liu Sihong,Xu Xiaodong,et al. Tests on factors of dynamic characteristics of retaining walls constructed with soilbags[J].Advances in Science and Technology of Water Resources,2015,35(6):41-46
10 王艳巧,刘斯宏,杨俊杰,等.土工袋加固砂性土质边坡模型试验与上限解[J].岩土力学与工程学报,2009,28(2):4006-4013Wang Yanqiao,Liu Sihong,Yang Junjie,et al. Model test of sandy soil slope reinforced by soilbags and upper-bound solution[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28(2):4006-4013
11 王艳巧,刘斯宏,林圣德,等.土工袋减振效果振动台试验研究[J].水电能源科学,2011,29(9):100-102Wang Yanqiao,Liu Sihong,Lin Shengde,et al. Vibrating platform test study of vibration reduction effect of soilbag[J]Water Resources and Power,2011,29(9):100-102
12 王艳巧,王丽娟.土工袋减振与耗能的数值模拟[J].岩土力学,2014,35(2):601-606Wang Yanqiao,Wang Lijuan. Numerical simulation of vibration reduction and energy dissipation of geotextile bag[J]. Rock and Soil Mechanics,2014,35(2):601-606
13 Moo-Young H K,Gaffney D A,Mo X,et al. Testing procedures to assess the viability of dewatering with geotextile tubes[J]. Geotextiles and Geomembranes,2002,20(5):289-303
14 Shin EC,Oh YI. Consolidation process geotextile tube filled with fine-grained materials[J]. Internation Journal of Offshore and Polar Engineerin,2003,14(1):1-9
15 Cantre S. Geotexitile tubes-analytical design aspects[J]. Geotexitiles and Geomembrances,2002,20:305-319
16 李伟,边宏亮,王成元.袋装砂土堆放形式对地基承载性能影响模型试验研究[J].施工技术,2016,45(15):104-108Li Wei,Bian Hongliang,Wang Chengyuan. Model testing for influence of packed sand storage form on foundation bearing capacity[J]. Construction Technlogy,2016,45(15):104-108
17 白福青,刘斯宏,王艳巧,等.土工袋加固原理与极限强度的分析研究[J].岩土力学,2010,31(1):172-176Bai Fuqing,Liu Sihong,Wang Yanqiao,et al. Research on reinforcement mechanism and failure strength of soildbags[J]. Rock and Soil Mechanics,2010,31(1):172-176
18 章伟,王法精,张瑞仁.“土袋”在日本软土地基加固中的应用于分析[J].青岛建筑工程学院学报,2005,26(2):10-13Zhang Wei,Wang Fajing,Zhang Ruiren. Application and analysis of a new earth Reinforcement Method by Soilbags[J]. Journal of Qingdao Insitue of Architecture and Engineering,2005,26(2):10-13
19 Shin EC,Oh YI. Analysis of geotextile tube behavior by large scale field model tests[J]. Geosynthetics International,2003,10(1):134-141
20 Ieshchinsky D,Leshchisky O,Ling I H,et al. Geosynthetic tubes for confining pressurized slurry-some design aspects[J]. Journal of Geotechnical Engineering,1996,122(2):682-690