土工格栅表面与土粒的摩擦作用

       塑料土工格栅是在20世纪70年代研制成功的gq度聚丙烯或聚乙烯的高分子聚合物片材，是在一定的温度下经过挤板压延、冲孔、纵向拉伸和冷却定型的片网状结构物。塑料土工格栅是一种新兴的土工合成材料。常见类型分为单向土工格栅双向土工格栅、多层双向土工格栅。被广泛应用于土木工程中,具有良好的加筋效果和经济性能。土工格栅的基本性能主要体现是力学特性、结构特性和耐久性能三个方面。**先塑料土工格栅具有较大的取向度和结晶度提高了拉伸强度,埋人土中具有较大的抗拔力;其次其网状结构对粗粒土有较强的嵌锁作用,z与填料的剪切阻力;zui后聚乙烯(或聚丙烯)性能对酸、碱、盐等都非常稳定,具有优异的耐久性和长期稳定性。

Plastic geogrid is a high-strength polypropylene or polyethylene polymer sheet developed in the 1970s. It is a sheet network structure that has been extruded, pressed, longitudinally stretched and cooled at a certain temperature. Plastic geogrid is a new geosynthetic material. Common types are divided into one-way geogrid two-way geogrid, multi-layer two-way geogrid. It is widely used in civil engineering with good reinforcement effect and economic performance. The basic performance of geogrid is mainly reflected in three aspects: mechanical characteristics, structural characteristics and durability. First, the plastic geogrid has a large degree of orientation and crystallinity, which improves the tensile strength, and has a large pull-out resistance in the buried soil; secondly, its mesh structure has a strong interlocking effect on the coarse-grained soil, increasing the shear resistance with the filler; finally, the performance of polyethylene (or polypropylene) is very stable for acid, alkali, salt, etc., with excellent durability and long-term stability.

      土工格栅是结点厚度大于肋条厚度并存在着大量网眼,能够将土粒紧紧连在一起,形成嵌锁结构,格栅网眼对周围土体产生机械咬合力,限制土体的变形,同时土工格栅受拉,对嵌锁的土体产生压缩裹伏作用，从而形成稳定的且具有一定模量的承台结构,这种相互作用可归纳为三种情况:

Geogrid is a kind of pile cap structure with node thickness greater than rib thickness and a large number of mesh, which can tightly connect soil particles and form a interlocking structure. The mesh of geogrid can produce mechanical bite force on surrounding soil and limit the deformation of soil. At the same time, the tensile force of geogrid can compress the embedded soil, thus forming a stable and modulus bearing platform structure, This interaction can be summarized into three situations:

      土工格栅表面与土粒的摩擦作用;土体颗粒对土工格栅纵横肋的被动阻抗作用;土工格栅上的孔眼对土的“锁定”作用。这三种作用均能充分约束土颗粒的侧向位移,从而增加了土体的稳定性，同时由于三种作用的存在,使得土工格栅在土中的抗拔能力或格栅对土的加固效果也明显提高。

The friction between the geogrid surface and the soil particles, the passive impedance of the soil particles to the vertical and horizontal ribs of the geogrid, and the "locking" effect of the holes on the geogrid on the soil. These three kinds of actions can fully restrain the lateral displacement of soil particles, thus increasing the stability of the soil. At the same time, due to the existence of three kinds of actions, the uplift resistance of Geogrid in the soil or the reinforcement effect of Geogrid on the soil are also significantly improved.

      土工格栅是结点厚度大于肋条厚度并存在着大量网眼,能够将土粒紧紧连在一起,形成嵌锁结构,格栅网眼对周围土体产生机械咬合力,限制土体的变形,同时土工格栅受拉,对嵌锁的土体产生压缩裹伏作用，从而形成稳定的且具有一定模量的承台结构,这种相互作用可归纳为三种情况:

Geogrid is a kind of pile cap structure with node thickness greater than rib thickness and a large number of mesh, which can tightly connect soil particles to form a interlocking structure. The mesh of geogrid can produce mechanical bite force on surrounding soil and limit the deformation of soil mass. Meanwhile, the tensile force of geogrid can produce compression and entrapment effect on the interlocking soil mass, so as to form a stable and modulus bearing platform structure, This interaction can be summarized into three situations:

       土工格栅表面与土粒的摩擦作用;土体颗粒对土工格栅纵横肋的被动阻抗作用;土工格栅上的孔眼对土的“锁定”作用。这三种作用均能充分约束土颗粒的侧向位移,从而增加了土体的稳定性,同时由于三种作用的存在,使得土工格栅在土中的抗拔能力或格栅对土的加固效果也明显提高。

The friction between the geogrid surface and the soil particles, the passive impedance of the soil particles to the vertical and horizontal ribs of the geogrid, and the "locking" effect of the holes on the geogrid on the soil. These three kinds of actions can fully restrain the lateral displacement of soil particles, thus increasing the stability of the soil. At the same time, due to the existence of three kinds of actions, the uplift resistance of Geogrid in the soil or the reinforcement effect of Geogrid on the soil are also significantly improved.

      相信大家看完以上内容以后，应该也对土工格栅表面与土粒的摩擦作用有所了解了吧，希望会对大家有所帮助吧。

I believe that after reading the above content, you should also understand the friction between the geogrid surface and the soil particles. I hope it will help you.

      本文词标签：塑料土工格栅

      本文链接地址：/xinwenzhongxin/2020/0429/279.html