Based on the test results in the site conditions and recurred to artificial neural network theory , the reduction factor values of ultraviolet degadation for limit state design were given ; and it provides important reference for the design of civil engineering 并利用人工神经网络理论对试验成果进行了分析与预测，确定了土工合成材料在不同工程状况下的紫外线老化折减系数的取值范围，对工程的设计及施工有一定的指导意义。
In this paper , according to the reaction of deformation and crack of pavement caused by the non - uniform settlement and the whole stability between the new & old embankment after widening the used road on soft ground , based on the study of settlement and stability of soft ground , the author systematically analyzed the mechanism of geosynthetics in the widening pavement structure , and presented a whole settlement computing method of reinforced embankment in widening structure with the theory of soil mechanics 本论文将利用土力学的相关理论，针对软土地基上旧路加宽后，在新旧路基间所出现的不均匀沉降和新旧路基整体结合强度不够而引起的路面变形、开裂等现象，从软土地基沉降和路基稳定性入手，系统分析了土工合成材料在加宽路基结构中的作用机理，并初步提出了加宽道路加筋路堤沉降计算的一整套方法。
In this paper , on the basis of the numerical analysis with the concept of equivalent soil mass with reinforcement and shake table model test , the calculation of high loess embankment with geogrid - reinforcement in highway is carried out under static loading , and the dynamic response of high reinforced sand - gravel embankment with grogrid - reinforcement in highway is tested under earthquake . the behaviors of loess embankment are indicated as the following : ? he stress and deformation varies with reinforcement design conditions and foundation types 本文通过将土工合成材料与土体视为加筋等效土体的数值计算方法和振动台模型试验，以加筋黄土高路堤和竖直挡板加筋砂砾土高路堤为研究对象，计算分析了不同堤基上不同加筋设计条件下黄土高路堤的静应力及变形变化规律，试验研究了不同加筋条件下砂砾土高路堤的动力反应特性。
( 1 ) systematic triaxial compression tests are made for the sand reinforced by various national geosynthetics . comprehensive investigations into the interaction characteristics are also made between sand / lime fly ash and various national geosynthetics by direct shear tests and pull out tests , which can help choosing geosynthetic type and understanding the geosynthetic reinforcement mechanism ; ( 2 ) this paper is also firstly systematically presents the results of a comprehensive investigation into the interaction characteristics between lime fly ash and various national geosynthetics ; ( 3 ) by non - linear fem , the influence of the modulus of geosynthetics , the thickness of the soft ground and the width of the foundation on the effectiveness of geosynthetic reinforcement are also studied ; ( 4 ) the main conclusions are as followed : ( geotextiles are likely to be suited for projects allowing high displacement , polyester warp knitting geogrids and oriented geogrids for projects allowing medium displacement , glass fiber geogrids for projects allowing low displacement and geonets for secondary projects . ( the confining effect of fill material to act on different kinds of geosynthetics varies largely , which must be considered （ 1 ）本文利用三轴压缩试验，比较各种国产土工合成材料对砂土的加筋效果；利用直剪试验和拉拔试验，比较各种国产土工合成材料与砂土或石灰粉煤灰的界面摩擦特性，深入研究土工合成材料的加筋机理，首次明确提出加筋土工合成材料的选型原则； （ 2 ）本文首次系统地研究了石灰粉煤灰与各种国产土工合成材料的界面摩擦特性； （ 3 ）本文采用有限元法，系统研究了加筋模量、软土地基厚度、基础宽度等因素对土工合成材料加固软土地基效果的影响； （ 4 ）本文主要结论如下： (无纺土工织物适合用于允许大变形的加筋土工程；涤纶纤维经编土工格栅和塑料拉伸土工格栅适合用于对变形有较严格要求的加筋土工程；玻璃纤维经编土工格栅适合用于对变形有严格要求的加筋工程；土工网适合用于低等级的加筋土工程。
What ' s more , the paper , based on a project example , suggested a rational widening embankment structure . by using finite element software - ansys , and according to different environment on soft ground ( including different height of embankment , different thickness of soft ground and different layer - number of reinforcements and so on ) , the paper also analyzed the effects of the geosynthetics which reducing the non - uniform settlement of the new & old embankment , the deformation characteristics and settlement rule of the widening embankment structure , then presented rational widening programs of the embankment structure 另外，本文还以工程实例为背景，拟定软土地基上旧路加宽比较合理的路基结构，并运用大型有限元分析软件ansys进行有限元分析，就软土地基上旧路加宽结构在不同的情况(主要指不同的路基高度、不同软土层厚度、不同的加筋层数等)下，对土工合成材料减少新旧路基不均匀沉降的效果进行分析计算，讨论了软土地基上加宽路堤在不同情况下的变形特征和沉降规律，并在上述基础上，提出不同情况下较合理的路基加宽方案。
The joint test results of physical , hydraulic and mechanical characteristics of geosynthetic materials ( such as geomembrane , nonwoven fabric and geogrid ) are analyzed by use of the mathematic statistical method so as to see whether or not there is any system error in the test results among laboratories and to see the reliability of test results is ensured 摘要运用数理统计方法，分析了国内各实验室对土工合成材料（土工膜、针刺土工布和塑料格栅）的物理、水力学和力学特性进行联合检测的结果，从而确定各实验室间的检测结果有无系统误差，以及检测结果的可信度。
Basing on the realities mentioned above , the contents of this paper are as follows : first , the paper is summarized the results of tension test on geosynthetics . then the paper presents the contents and results of tension properties on uniaxial oriented geogrid , warp knitting geogrid , woven geotextile and unwoven geotextile 首先，归纳总结国内外土工合成材料拉伸试验的研究成果，通过室内试验研究常用的加筋材料? ?单向土工格栅、经编土工格栅、有纺土工布和无纺土工布的拉伸特性。
Geosynthetics ( such as geotextile , geogrid and so on ) can be used as a treamment in the process of widening the used road on soft ground . on the one hand , the tensile strength of geosynthetics can reinforce the structural association between the new & old embankment , and make them have enough entirety . on the other hand , geosynthetics can reduce settlement of the subgrad , and greatly reduce non - uniform settlement of the new & old embankment 软土地基上公路的加宽处理，可以采用土工合成材料(如土工布、土工格栅等) ，一方面靠土工合成材料的抗拉强度增加加宽部分和旧路基之间结构联系，使两者具有足够的整体性，另一方面可以减少软基的沉降，并可明显减少新旧路基的不均匀沉降。
The 3 - d finite element method is used to analyze the relationships of asphalt overlay thermal stress and temperature drop range , overlay height and geosynthetics , the results indicate that some necessary measures should he token in some regions with low temperature and great difference in temperature of day and night so as to resist the bad influence of thermal stress 采用三维有限元方法分析了沥青加铺层的温度应力与降温幅度、加铺层厚度、土工合成材料模量之间的关系，结果表明，在温度较低及昼夜温差较大的地区应采取必要的措施以抵抗温度应力带来的不利影响。
Jiangsu yizheng nonwoven factory adheres to the quality target " continuing improvement , taking the lead at every step , the only standard is the customer s satisfaction " . we will keep abreast with the times and offer the first class service to our customers . the experience of our long years has convinced us that yanmei brand geotextiles product series will make greater contributions to irrigation , transportation , ports , courses , railways and city environment protection 江苏省仪征无纺布厂恪守“持续改进、争步步领先；唯一标准、让客户满意”的质量方针，与时俱进，以一流的产品为用户提供一流的服务，多年来的成功经验使我们坚信“雁梅”牌土工合成材料系列产品将为水利、交通、港口、航道、铁路、城市环境保护建设等作出更大的贡献。
