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A platform for research: civil engineering, architecture and urbanism
Environment-friendly low-liquid-limit-silt roadbed improvement method
The invention discloses an environment-friendly low-liquid-limit-silt roadbed improvement method. According to the method, natural gravel and low-liquid-limit silt are blended, and the engineering performance of the low-liquid-limit silt filled embankment is improved by utilizing the skeleton performance of the natural gravel. After gravel blending, the stress transmission among the powder clay particles is changed by the gravels with large particles. Moreover, the proportion of the borne load is increased, the internal friction angle in the composite soil body is changed; the friction resistance of the contact parts between large particles is much larger, a certain framework is also formed between part of the large particles in contact, the stress proportion is also increased along with the increase of the proportion of gravel, and the effect is gradually formed and enhanced. The defects that a low-liquid-limit silt improved roadbed material is insufficient in bearing capacity, poor in stability, high in improvement cost, prone to damaging the environment and the like are overcome; and the method is simple, reliable and beneficial to wide application of the low-liquid-limit silt in road construction.
本发明公开了一种环境友好型低液限粉土路基改良方法。该方法采用天然砂砾与低液限粉土掺配，利用天然砂砾的骨架性能，提高了低液限粉土填筑路堤的工程性能。掺入砂砾后，大颗粒的砾石使粉粘土颗粒之间的受力传递发生变化，而且本身承受荷载比例增加，改变了复合土体中的内摩擦角，同时大颗粒之间接触的地方，其摩阻力要大的多，部分接触的大颗粒之间也形成一定的骨架，随着砂砾所占比例的增加，其受力比例也在增加，这种作用逐渐形成、加强。克服了低液限粉土改良路基材料承载能力不足、稳定性较差、改良成本高、容易破坏环境等缺陷，该方法简单、可靠，有利于低液限粉土在道路建设中的广泛应用。
Environment-friendly low-liquid-limit-silt roadbed improvement method
The invention discloses an environment-friendly low-liquid-limit-silt roadbed improvement method. According to the method, natural gravel and low-liquid-limit silt are blended, and the engineering performance of the low-liquid-limit silt filled embankment is improved by utilizing the skeleton performance of the natural gravel. After gravel blending, the stress transmission among the powder clay particles is changed by the gravels with large particles. Moreover, the proportion of the borne load is increased, the internal friction angle in the composite soil body is changed; the friction resistance of the contact parts between large particles is much larger, a certain framework is also formed between part of the large particles in contact, the stress proportion is also increased along with the increase of the proportion of gravel, and the effect is gradually formed and enhanced. The defects that a low-liquid-limit silt improved roadbed material is insufficient in bearing capacity, poor in stability, high in improvement cost, prone to damaging the environment and the like are overcome; and the method is simple, reliable and beneficial to wide application of the low-liquid-limit silt in road construction.
本发明公开了一种环境友好型低液限粉土路基改良方法。该方法采用天然砂砾与低液限粉土掺配，利用天然砂砾的骨架性能，提高了低液限粉土填筑路堤的工程性能。掺入砂砾后，大颗粒的砾石使粉粘土颗粒之间的受力传递发生变化，而且本身承受荷载比例增加，改变了复合土体中的内摩擦角，同时大颗粒之间接触的地方，其摩阻力要大的多，部分接触的大颗粒之间也形成一定的骨架，随着砂砾所占比例的增加，其受力比例也在增加，这种作用逐渐形成、加强。克服了低液限粉土改良路基材料承载能力不足、稳定性较差、改良成本高、容易破坏环境等缺陷，该方法简单、可靠，有利于低液限粉土在道路建设中的广泛应用。
Environment-friendly low-liquid-limit-silt roadbed improvement method
一种环境友好型低液限粉土路基改良方法
BAO WEIXING (author) / MA ZHIWEI (author) / WANG HAIBO (author)
2020-07-10
Patent
Electronic Resource
Chinese
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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