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车辙是城市道路沥青路面主要病害之一,其主要表现是在行车荷载作用下,在行车轨迹部位路面发生下沉,形成车辙.本文介绍了沥青路面车辙类型,进行了成因分析,并提出了相应的防治措施. 相似文献
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《赤峰学院学报(自然科学版)》2016,(1)
车辙是沥青路面特有的主要破坏现象之一.本文选择郑漯高速,观察交通流量和车辆轴载,考虑垂直力和水平力,就交通流荷载对沥青路面剪切和压密变形的影响进行分析,选取几种不同轮胎接地压强下沥青面层内部不同深度处的剪应力和压应力进行计算,分析交通流荷载对沥青路面车辙病害的影响规律,验证车辙形成机理. 相似文献
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高速公路沥青路面大修中应用GTM法的体会 总被引：1，自引：0，他引：1
龚清显 《淮北职业技术学院学报》2010,9(5):103-105
在某高速公路B段沥青路面大修工程中,针对路面重载交通量大、车辙病害严重的特点,采用了GTM法进行沥青路面设计,有效提高了路面的抗车辙能力。在施工控制过程中,适当提高了对路面集料的质量技术要求,并严格施工工艺质量控制,采用大吨位胶轮压路机增加压实功,保证了压实密实度达到设计要求。大修竣工通车二年来．路面平整密实．沥青路面车辙病害得到根治。 相似文献
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许磊 《淮北职业技术学院学报》2007,6(5):74-74
本文从道路交通条件、气候自然环境、路面结构设计、原材料及施工控制等多方面对沥青路面车辙病害进行分析,并提出了预防措施及养护处治方案. 相似文献
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沥青路面的病害常见的有裂缝、车辙、离析、泛油和水损害等病害,其产生的原因有设计和施工两方面的因素.要防治沥青路面病害,必须从原材料、设计、施工、监理等各个环节重视质量;严格按标准、规范、规程办事,把好材料、工艺各个环节. 相似文献
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沥青路面早期破坏的现象有:泛油、波浪、拥包、网裂、裂缝、坑槽、局部沉陷、松散、车辙等主要病害.这些病害极具普遍性和严重性,现就这些病害产生原因作如下探讨:沥青路面的主要类型有沥青表面处治、沥青贯入式、热拌沥青混合料和乳化沥青混合料路面等,因其具有造价相对较低、行车舒适、修复方便,能够利用石化企业副产品等优点而被广泛用于公路和城市道路、机场等基础设施的面层处理.本文从路面设计、路面施工、养护管理及其他环节,结合本人的工程实践,分析了沥青路面早期破坏的原因. 相似文献
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沥青路面早期破坏的现象有:泛油、波浪、壅包、滑溜、裂缝、坑槽、局部沉陷、松散、车辙等九种.这些病害极具普遍性和严重性,为公路工程质量通病之一. 相似文献
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路面裂缝是沥青路面在道路使用期出现的最普遍的病害之一.本文对沥青路面裂缝的分类及产生的原因进行了分析,并提出了减轻沥青路面裂缝的预防及治理措施. 相似文献
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沥青路面是由沥青与各种矿料组成的混合料铺筑而成的路面，由于具有良好的力学性能和较好的耐久性，行车舒适性，已普遍在我国采用。但由于多种原因，沥青路面的破坏现象十分普遍，严重降低了路面的使用寿命，对交通安全和运输构成威胁，因此分析沥青路面病害的成因，提出防治建议和方法，科学处治病害，是一个长期的课题。 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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唐芳 《读与写:教育教学刊》2008,5(6)
During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context. 相似文献