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钢塑土工格栅如何增强公路路基
日期:2020年 04月 29日 共阅:71次 文章来源:山东肥城联谊工程塑料有限公司
       钢塑土工格栅是由一种钢塑复合加筋带(内置高强度碳素弹簧钢丝<受力材料),外面裏覆聚乙烯树脂(保护材料)复合而成),按平面经纬成直角布置,经超声波焊接成型的土工合成材料。它是现有刚性筋材(扁钢带、带肋钢带镀锌钢带,不锈钢钢带.钢筋混泥土带等)和柔性筋材(聚丙烯条带、塑料土工格栅经编格栅等)的综合性产品。
The steel plastic geogrid is a kind of steel plastic composite reinforced belt (built-in high-strength carbon spring steel wire < stress material), which is clad with polyethylene resin (protective material) outside. It is arranged at right angles to the plane longitude and latitude, and formed by ultrasonic welding. It is a comprehensive product of existing rigid steel bars (flat steel strip, ribbed steel strip galvanized steel strip, stainless steel strip, reinforced concrete strip, etc.) and flexible steel bars (polypropylene strip, plastic geogrid warp knitted grid, etc.).
       由于其抗拉强度大。延伸率低(≤3%).蠕变小、及对土体有较强地嵌锁、咬合作用,它能有效地对软土地基进行处理,约束土体的侧向位移,克服土体的不均匀沉降,极大程度地增强地基的承载能力,提高基础的整体性能;它可广泛地应用于道路工程.铁路工程、支挡结构和堤坝工程、水利工程.隧道工程的加固与加强;它对抗车辙、防止路面的开裂等,都具有显著的保障效果及良好的社会经济效益。
Because of its high tensile strength. It can effectively treat the soft soil foundation, restrain the lateral displacement of the soil, overcome the uneven settlement of the soil, greatly enhance the bearing capacity of the foundation, and improve the overall performance of the foundation; It can be widely used in road engineering, railway engineering, retaining structure and dam engineering, water conservancy engineering, tunnel engineering reinforcement and strengthening; it can resist rutting, prevent pavement cracking, etc., which have significant guarantee effect and good social and economic benefits.
       (1)土工格栅在路基填方范围内平整的下承层上全宽铺设。
       (1) Geogrid shall be laid in full width on the flat lower bearing layer within the scope of subgrade filling.
       (2)土工格栅.上下层填料无刺坏土工格栅的杂物,铺设土工格栅时,将强度高的方向垂直于路堤轴线方向布置。
       (2) Geogrid. The upper and lower fillers shall be free of sundries that may damage the geogrid. When laying the geogrid, the direction with high strength shall be arranged perpendicular to the embankment axis.
       (3)钢塑土工格栅纵横强度相等。
       (3) The longitudinal and transverse strength of steel plastic geogrid is equal.
       (4)用竹桩(或木桩)标示出土工格册铺设的范围,然后进行铺设。
       (4) Use bamboo piles (or wooden piles) to mark the scope of the excavation volume, and then lay it.
       (5)杜绝一切施工车辆和施工机械行驶或停放在已铺好的土工格栅上,施工中随时检查土工格栅的质量.发现有折损、刺破、撕裂等损坏时,视程度修补或更换。

       (5) All construction vehicles and construction machinery shall not be driven or parked on the paved geogrid, and the quality of geogrid shall be checked at any time during construction. In case of any damage such as fold, puncture, tear, etc., repair or replace according to the extent.

       土工格栅应充分拉紧、平整、顺直;两侧宽度与路基同宽。土工格栅的连接-般采用绑扎搭接宽度不应小于30cm。为使搭接处满足设计要求,一般每隔10- _15cm 应有一个绑扎点;受力方向至少应有两个绑扎点。多层铺设时,上下层搭接应错缝布置。相邻两幅土工格栅采用铺设时绷紧,拉挺.避免折皱、扭曲或坑洼。土工格栅沿纵向拼接采用搭接法,搭接宽度不小于20cm,并用“U"形地锚予以锚固。格栅铺设好后应及时用土料填盖, -般不应超过两天,如紫外线照射较弱,可适当延长覆盖时间。
The geogrid shall be fully tensioned, flat and straight; the width of both sides shall be the same as that of the subgrade. The connection of geogrid - generally, the binding and overlapping width shall not be less than 30cm. In order to make the lap joint meet the design requirements, generally there should be one binding point every 10 - cm; there should be at least two binding points in the direction of stress. When laying in multiple layers, the upper and lower layers shall be staggered. The two adjacent geogrids shall be tightened and stretched when laying to avoid wrinkles, twists or potholes. The geogrid shall be spliced along the longitudinal direction by the lap method, with the lap width not less than 20cm, and anchored by the "U" shaped ground anchor. After the grating is laid, it shall be covered with earth material in time. Generally, it shall not exceed two days. If the ultraviolet radiation is weak, the covering time can be extended properly.
       为确保钢塑土工格栅不被破坏及锚固效果,,在土工格栅中成孔锚固,锚固长度大于等于1.4m,确保下层土工格栅锚固在原状土样中的长度不小于设计值。地锚孔采用干作业成孔,内注M30水泥砂浆,通过格栅孔插入“U"形钢筋形成地锚,地锚沿路线纵向每50cm设一处。地锚钢筋采用φ25钢筋弯制而成并作防锈处理,两油两布包裹外包塑料软管。
In order to ensure that the steel plastic geogrid will not be damaged and the anchoring effect, the hole is formed in the geogrid for anchoring, and the anchoring length is not less than 1.4m, so as to ensure that the length of the lower geogrid anchored in the undisturbed soil sample is not less than the design value. The anchor hole shall be formed by dry operation, M30 cement mortar shall be injected into the hole, and the "U" shaped reinforcement shall be inserted through the grid hole to form the anchor. One anchor shall be set every 50cm along the longitudinal direction of the route. The ground anchor steel bar is made of φ 25 steel bar by bending and antirust treatment. Two oil and two cloth are wrapped with plastic hose.
      土工格栅铺设完成后,进行路基填筑。人工铺设上层填料,及时完成碾压.避免长期暴晒。然后采用机械运料.整平碾压。机械摊铺、碾压从两边向中间推进,碾压自两边向中间进行,其压实度保持达到规范要求。填料要求:在距土工格栅层8em以内的路堤土石混填路堤料其最大料径不得大于6cm,土工格栅第一层填土石摊铺应沿路堤的轴线方向行驶进行压实,填筑压实厚度大于60cm。为了避免运输车辆碾压或调头时对土工格栅造成一定破坏,可采用滚填的方式进行土石方埴筑,推土机推平,压路机碾压,土石方填筑碾压应符合路基土石方压实的规范要求。
After the geogrid is laid, the subgrade shall be filled. Manually lay the upper filler, timely complete rolling and avoid long-term exposure to the sun. Then the material shall be transported and leveled and rolled by machinery. The mechanical paving and rolling shall be carried out from both sides to the middle, and the rolling shall be carried out from both sides to the middle, and the compactness shall meet the specification requirements. Filling requirements: the maximum material diameter of the embankment earth rock mixed embankment material within 8em from the geogrid layer shall not be greater than 6cm. The first layer of geogrid earth rock shall be compacted along the axis direction of the embankment, and the filling compaction thickness shall be greater than 60cm. In order to avoid certain damage to the geogrid caused by the rolling or turning of transportation vehicles, the rolling and filling method can be used for earth rock construction, bulldozer bulldozing, roller rolling, and earth rock filling and rolling shall meet the specification requirements of subgrade earth rock compaction.
      钢塑土工格栅较一般格栅性能更加优越,具有较高强度高模量,低蠕变、抗腐蚀、抗者化抗脆裂及可预设计等多种特性,是道路工程使用的优良材料。在道路工程中,使用钢塑土工格栅可以有效地控制车辙。控制反射裂缝,减缓路面破坏程度,提高道路的使用寿命,降低道路建设费用。
Steel plastic geogrid is superior to general geogrid in performance, with high strength and high modulus, low creep, anti-corrosion, resistance to chemical embrittlement and can be pre designed and other characteristics. It is an excellent material used in road engineering. In road engineering, the use of steel plastic geogrid can effectively control rutting. Control the reflection crack, slow down the damage degree of the road surface, improve the service life of the road, and reduce the cost of road construction.
相信大家看完以上内容以后,应该也对钢塑土工格栅如何增强公路路基有所了解了,希望会对大家有所帮助吧。
I believe that after reading the above content, you should also have some understanding of how steel plastic geogrid enhances highway subgrade. I hope it will help you.
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