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1.
介绍了道路结构用土工布的特点及特性,并重点阐述了其在各种路面工程中的应用情况。分析了土工布的优点,指出土工布在交通建设工程中具有广阔的前景。  相似文献   

2.
介绍了土工布的发展过程,研究了土工布在沥青路面养护罩面工程中的作用机理及施工注意要点,通过土工布在沥青路面养护罩面工程中的应用实例分析,证实了土工布防治裂缝技术在路面养护工程中的可行性与实用性。  相似文献   

3.
本文介绍耐纶土工布的技术性能、各工程使用土工布种类以及国内外应用情况,供开发应用土工布参考。  相似文献   

4.
王强林 《山西建筑》2011,37(26):164-165
结合土工布在桂柳高速公路路面加铺沥青层工程的应用,详细阐述了土工布在水泥混凝土路面加铺沥青混凝土面层中的应用,着重介绍了土工布的材料特性和施工工艺,为今后同类工程施工积累了宝贵经验。  相似文献   

5.
浅谈土工布在南平防护工程中的应用及其效果   总被引:1,自引:0,他引:1  
本文首先简要介绍了土工合成材料的性能、特点以及它的发展和应用,然后简要叙述土工布在南平防护工程中的应用情况及其使用效果。这在当时土工织物的应用日渐增多,南平防护工程适时采用新材料、新工艺、新技术用土工布代替反滤层,而且经受多次洪水考验,南平防护工程应用土工布防渗、排水、加固等经验是成功的。  相似文献   

6.
介绍了由无机防水粉料与土工布材料经针刺复合而成的防水毯的性能特点,并结合工程实例介绍了其在屋面防水翻修工程中的应用和施工方法。  相似文献   

7.
土工布加筋是当前新型的一项土工技术,其主要的应用形式便是加筋挡土结构,这种技术在国外已经得到了广泛使用。但目前我国部分工程人员并不清楚土工合成材料的加筋机理,其计算方法也并不成熟,没有形成完善的体系,理论研究明显弱于实际的工程实践,这也限制了土工布合成材料的使用,为此,应迫切需要深入研究加筋土挡墙的应用。本文通过介绍加筋挡土墙的结构及特点,指出了加筋土挡墙应用中存在的几个问题。  相似文献   

8.
本文介绍了土工布在市政道路工程中应用机理及应用情况。  相似文献   

9.
江苏加紧土工布生产企业结构调整和技术改造 ,目前已形成5000/年的生产能力 ,预计1999年全省年产量可达到8000万 ,约1 6万吨。据江苏省纺织总会副会长邢伯有介绍 ,目前江苏已成为我国最大的土工布生产基地 ,其生产能力、规模和品种都居全国之最 ,土工布是继钢材、水泥、木材之后的第4种新型建筑材料 ,在工程中能起到加强防护、排水、反滤、隔离、防渗等的作用。据介绍 ,土工布在发达国家已得到了广泛的应用。目前 ,世界上以丙纶和涤纶为主要原料的土工布年耗用量近40万吨。我国土工布在80年代才开始应用 ,但发展速度极…  相似文献   

10.
江苏省加紧土工布生产企业结构调整和技术改造,目前已形成5000万m2/a的生产能力,到1999年全省年产量可达到8000万m2,约1.6万t。目前江苏已成为我国最大的土工布生产基地,其生产能力、规模和品种都居全国之最。土工布在工程中能起到加强防护、排水、反滤、隔离、防渗等的作用,土工布在发达国家已得到了广泛的应用。目前,世界上以丙纶和涤纶为主要原料的土工布年耗用量近40万t。我国80年代才开始应用土工布,但发展速度极快,目前国内需求量已达到3~4万t/a。国内土工布主要产品技术性能已基本可满足工程建设和…  相似文献   

11.
During the use of geotextiles in coastal engineering for over 25 years many construction methods have been improved or have been made more economical. Sometimes completely new solutions for coastal engineering problems can be recommended. This paper gives information about the long-term behaviour of geotextiles in coastal engineering and the minimum requirements for their application. Some case studies show the necessity of careful geotextile selection, considering the special requirements of the application, the harsh coastal engineering environment and the rough building practice found in all fields of hydraulic engineering.  相似文献   

12.
Over the last decade there has been much interest shown in the use of textiles in civil engineering construction, particularly in geotechnical engineering where geotextiles are associated with soil. Is this a fad, or something more profound and durable? In attempting to rationalize this dramatic development it is concluded that geotextiles do offer many technical and economic advantages. However, at present geotextiles are commonly used as a replacement for traditional building materials using traditional construction methods rather than more innovative techniques that could only be employed using geotextiles. It is concluded that the development of these techniques is the real future of geotextiles and that this future can only be secured by the close cooperation of both textile and civil engineers.  相似文献   

13.
This paper describes developments in the use of geotextiles in Japan, not only in the recent past but in the period from the ancient era of China down to the middle and pre-Meiji ages of Japan when natural materials were used in a similar manner to present-day geotextiles. The 1960s witnessed development of the petrochemical industry and several applications of geotextiles independent of overseas technology. These related mainly to the treatment of soft ground and its reclamation. During the 1970s there was wider application of geotextiles to project involving embankments, retaining walls and other earth structures, leading to the use of polymer grids which commenced in Japan in 1983.  相似文献   

14.
Applications of geotextiles in civil engineering have been successfully developed and offer benefits in terms of economics, durability and p performance. Geotextiles play an important role in geotechnical engineering works, especially highways and railroads, reinforced soil, stabilisation of soil or rock slopes, drainage control, embankments and dams, tunnel constructions, reservoirs, coastal engineering and canals. This paper mainly gives information about the development and use of geotextiles in India.  相似文献   

15.
This article deals with needle-punched nonwoven geotextiles prepared from nettle and poly(lactic acid) fibers in different weight proportions for potential slope stabilization application using bioengineering approach. The geotextiles were tested for tensile strength, biodegradability, and enhancement of soil fertility. The tensile strength of the geotextiles was found to decrease with addition of stronger nettle fibers. This apparently surprising behavior was explained in the light of theoretical tensile mechanics of nonwovens. Further, the nettle fibers displayed higher biodegradability than the poly(lactic acid) fibers, and when buried under soil, all the geotextiles exhibited a loss in tensile strength. Interestingly, the fertility of the soil was remarkably improved after biodegradation of poly(lactic acid) fibers. Overall, the nonwoven geotextiles prepared in this work were found to be promising for slope stabilization application.  相似文献   

16.
随着土工合成材料技术在我国的应用和发展,土工合成材料加筋垫层已经在土木工程中得到广泛的应用,经济效益显著。但目前加筋垫层的作用机理与承载性能的研究远远落后于工程实践,加筋垫层设计计算还没有一套相对成熟的方法,直接影响了加筋垫层的进一步推广应用。本文在阅读大量国内外文献的基础上,归纳和总结了加筋垫层的承载性能和设计方法研究现状,指出目前存在的主要问题,并提出了进一步研究的方向。  相似文献   

17.
Geotextiles have been widely used in soil structures for separation, filtration, reinforcing, and drainage. They are often used to provide reinforcement and drainage for retaining walls and embankments. It has been reported, however, that geotextiles may not drain water as effectively as was initially expected. In this study, published data on the hydraulic properties of unsaturated geotextiles are compiled and analyzed in order to highlight the hydraulic characteristics of unsaturated geotextiles.

The application of the van Genuchten equations originally developed for the water characteristic curve and the hydraulic conductivity curve of unsaturated soil to unsaturated geotextiles is then examined and discussed. Finally, the drainage from a one-dimensional sand column having a horizontal geotextile layer was analyzed using the finite element method and the van Genuchten equations to assess the utility of this procedure for further study of unsaturated/saturated water flow within the soil–geotextile system.  相似文献   


18.
Some criteria for geotextile selection are considered and the specifications of various geotextiles are related to various case histories cited. Consideration is given to the special filtration capacity of fabrics and the possibility of adapting manufacture to optimise the geotextile to specific circumstances. The possibilities of reinforcement offered by fabrics are also illustrated by examples and it is shown that in extreme cases the application of geotextiles allows safe technical solutions coupled with economy. The manufacture of woven geotextiles is characterised by the various procedures in weaving preparation where technical and economic requirements have to be met. The influence of various factors on economy is explained and their effects shown.  相似文献   

19.
Geotextile filtration principles, practices and problems   总被引:1,自引:0,他引:1  
Geotextile filters are rapidly replacing graded granular filters as the standard of practice in geotechnical design. This paper reviews the current state of the practice in designing with geotextiles including a listing of the most widely recognized design criteria. Problems with the current practice are also recognized that present challenges to the geotextile community in order to increase the acceptance and utilization of geotextiles in this valuable application.  相似文献   

20.
The influence of uniaxial tensile strain on the pore size distribution and filtration characteristics of geotextiles is studied. An experimental apparatus was designed and used to conduct tests for pore size distribution, flow rate through the geotextiles and the gradient ratio. Four geotextiles made of polypropylene (two heat-bonded nonwoven and two slit film woven) were studied. Throughout the test series, the geotextiles were stretched to maintain 5%, 10% and 20% in-plane uniaxial strains. The strained specimen test results were compared with those from unstrained specimen. The experimental results illustrate the pore size and the mean flow rate through the plain geotextiles increase with the increase in tensile strain. The differences in changed percentages for apparent opening size and flow rate between the two nonwoven geotextiles are much higher than those between the two woven geotextiles. The increase in tensile strain results in reduction in the gradient ratio for the soil–geotextile system. This effect is more pronounced for nonwoven geotextiles. More testing is recommended to gain a deeper understanding into tensile strain effect on various geotextiles.  相似文献   

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