土工格栅改善软土地基效果极佳

       塑料土工格栅施工技术是处理软土地基的一种新的施工方法,有施工速度快、施工安排灵活的优点,与传统的施工工序相比较,具有施工简单、缩短工期,节约投资等特点。

Plastic geogrid construction technology is a new construction method to deal with soft soil foundation. It has the advantages of fast construction speed and flexible construction arrangement. Compared with the traditional construction process, it has the characteristics of simple construction, short construction period and saving investment.

       利用塑料土工格栅的强度高韧性好的力学性能分散荷载z土体的刚度模量而改善土体当软基可能产生冲切 楔入破坏时铺设的塑料土工格栅将阻止破坏面的出现提高软基承载力当软基可能产 生很大变形时铺设的塑料土工格栅由于其承受拉力和与土摩擦作用而z侧向限制阻止侧向挤出减小侧向变形z地基的稳定性其承受拉力而产生的支承和减小侧向挤出的效果。

Using the strength, high toughness and good mechanical properties of plastic geogrid to increase the stiffness modulus of the soil mass, improving the soil mass, when the soft foundation may produce punching wedge failure, the plastic geogrid laid will prevent the failure surface from appearing and improve the bearing capacity of the soft foundation when the soft foundation may produce The plastic geogrid with large deformation can increase the lateral limit due to its bearing tension and friction with the soil, prevent the lateral extrusion, reduce the lateral deformation, increase the stability of the foundation, and reduce the bearing tension and the effect of lateral extrusion.

       铺设塑料土工格栅后，塑料土工格栅调整及扩散了上部填砂传下的应力减少了因局部应力不均而破坏的可能性，从而使地基沉降较均匀。路基填筑时较为稳定在路基填筑过程中，根据沉降侧位移及孔压的实测变化而控制填筑速率，到达**限状态时就停止加载，待稳定后再填筑使软基的稳定性处于临界状态加快了填筑速率，用塑料土工格栅加固软土地基提高了路基填筑的稳定性，也改善了沉降速率加快了软土地基的固结。为软基处理争取一个相当长的预压期，同时塑料土工格栅施工简单费用较低是处理软土地基的一种有效方法。

After the plastic geogrid is laid, the plastic geogrid adjusts and diffuses the stress transmitted by the upper sand filling to reduce the possibility of damage due to local uneven stress, so as to make the foundation settlement more uniform. During subgrade filling, it is relatively stable in the process of subgrade filling. According to the measured changes of settlement side displacement and pore pressure, the filling rate is controlled. When it reaches the limit state, the loading stops. After it is stable, the filling makes the stability of the soft foundation in the critical state and accelerates the filling rate. The reinforcement of the soft foundation with plastic geogrid improves the stability of subgrade filling and improves the settlement rate Fast consolidation of soft soil foundation. It is an effective method for soft soil foundation treatment to strive for a quite long preloading period, and at the same time, the simple construction cost of plastic geogrid is low.

       塑料土工格栅施工工艺与传统施工工艺比较，有以下特点:**先,该方法替代了部分填筑、碾压等施工方法，简化工序、节省资源、节约投资、加快了填筑施工进度;其次,对各类软土地基进行了加筋处理,均匀地分散了荷载应力,减小不均匀沉降,提高了工程质量,也提高了施工的AQ性;

Compared with the traditional construction technology, the plastic geogrid construction technology has the following characteristics: first, this method replaces some filling, rolling and other construction methods, simplifies the process, saves resources, saves investment, and speeds up the filling construction progress; second, various soft soil foundations are reinforced, evenly distributes the load stress, reduces the uneven settlement, and improves the project quality, It also improves the safety of construction;

       再次,机械设备简易.操作较为简单、施工方便、快速。塑料土工格栅处理软土地基技术可广泛应用于修筑水利工程渠道基础加固铁路、公路、沙漠、沼泽、机场的软土地基处理和边坡防护,也可用于治理山体滑坡、挡土墙修建、公路桥头跳车,还可以用于城市绿化的植被保护。

Thirdly, the mechanical equipment is simple, the operation is simple, the construction is convenient and fast. The technology of plastic geogrid can be widely used in the soft soil foundation treatment and slope protection of railway, highway, desert, swamp, airport, etc. it can also be used in the treatment of landslides, retaining wall construction, highway bridgehead jumping, and vegetation protection of urban greening.

       塑料土工格栅是以聚丙烯、高密度聚乙烯为原料,以特别的挤压双向拉伸而成。普通塑料土工格栅是用HDPE宽带经高频焊接加工制成的一种新型土工合成材料，它利用其三维侧限原理，适用于地基加筋、垫层和表面防护。它为立体结构,通过改变其深度和孔型组合，获得刚性或半弹性的板块,可以大幅度提高软质松散填充材料的承载能力。

Plastic geogrid is made of polypropylene and high-density polyethylene by special extrusion and biaxial stretching. Ordinary plastic geogrid is a new type of geosynthetic material which is made of HDPE wide band by high frequency welding. It is suitable for foundation reinforcement, cushion and surface protection based on its three-dimensional side limit principle. It is a three-dimensional structure. By changing the combination of depth and pore pattern, rigid or semi elastic plates can be obtained, which can greatly improve the bearing capacity of soft loose filling materials.

       增加路堤的稳定性,有效防止滑移、塌方、沉陷等现象的发生。另一方面,使其上部施加的荷载能均匀分布在地层中。也

Increase the stability of embankment, effectively prevent the occurrence of slip, collapse, subsidence and other phenomena. On the other hand, the load applied on its upper part can be evenly distributed in the stratum. also

       就是说,当软土地基在上覆荷载作用下可能产生剪砌破坏时，塑料土工格栅将阻止破坏面的出现,从而提高地基的承载力。当土工格栅受到集中应力作用时,高弹性模量的塑料土工格栅受力后将产生垂直分力,分散和抵消部分荷载,有效提高地基承载力,这一效果能有效提高路基加载速率,缩短工期。

That is to say, when the soft soil foundation may produce shear masonry failure under the action of overlying load, the plastic geogrid will prevent the occurrence of failure surface, so as to improve the bearing capacity of the foundation. When the geogrid is subject to concentrated stress, the plastic geogrid with high elastic modulus will generate vertical component force after bearing, disperse and offset part of the load, effectively improve the bearing capacity of the foundation, which can effectively improve the loading rate of the subgrade and shorten the construction period.

       塑料土工格栅在提高地基承载力和增加地基稳定的同时,对不均匀的沉降有调节作用，能较快的减少路基的沉降差异。土工格栅和砂砾层共同构成比软土刚度大得多的复合势层,对上部施加的荷载起到重新分布的作用,其渗透排水作用又使地基受力趋于均衡,使软基加快排水固结,促成路堤均匀沉降,使路堤平顺。

The plastic geogrid can not only improve the bearing capacity of the foundation and increase the stability of the foundation, but also adjust the uneven settlement, which can reduce the settlement difference of the subgrade quickly. The geogrid and sand gravel layer constitute a composite potential layer with much greater rigidity than the soft soil, which redistributes the load imposed on the upper part, and its seepage drainage function makes the foundation stress tend to be balanced, so that the soft foundation can accelerate drainage consolidation, promote the uniform settlement of the embankment, and make the embankment smooth.

       相信大家看完以上内容以后，应该也对土工格栅改善软土地基效果有了一定的了解了，希望会对大家有所帮助吧。

I believe that after reading the above content, you should also have a certain understanding of the effect of Geogrid on improving soft soil foundation. I hope it will help you.

      本文词标签：塑料土工格栅

      本文链接地址：/xinwenzhongxin/2020/0429/280.html