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改性沥青及SMA路面平整度论文

更新时间:2010-5-24:  来源:毕业论文

改性沥青及SMA路面平整度论文
目录
摘要 I
引言 1
1影响改性沥青及SMA路面平整度的因素分析 1
1.1 结构特性 1
1.2 路基不均匀沉降,造成已铺筑路面出现坑凹 2
1.3 桥梁涵洞两端及桥梁伸缩缝的跳车,严重影响着路面整体平整度 2
1.4 基层不平整对路面平整度的影响 3
1.5 路面铺机械及工艺对平整度的影响很大 3
1.6 面层摊铺材料的质量对平整度影响 4
1.7 碾压对平整度的影响 4
1.8接缝处理欠佳 5
2 改性沥青及SMA路面平整度的控制措施 5
2.1 施工工艺和机械配置 5
2.2 路堤填筑前原地面处理 9
2.3 路堤填料 10
2.4 填土路基压实 10
2.5 特殊地基处理 11
2.6 完善排水设施 11
2.7 桥头、涵洞两端及伸缩缝的防治措施 12
2.8 路面基层施工注意 12
2.9 沥青路面机械摊铺工艺及控制 13
2.10 碾压质量控制 14
2.11接缝处理对策 16
3 改性沥青及SMA路面平整度检测结果 17
4 结束语 18
致 谢 19
参考文献 20
摘 要
本文章针对路基和路面平整度、沥青混凝土的拌和质量、摊铺机械及摊铺工艺、压实机械及压实工艺、纵横施工缝、桥头跳车的处理等进行分析,提出了影响沥青混凝土路面平整度的因素及相应的解决办法。
在施工中,基层做的不平,无论怎样使面层摊铺平整,但压实后也因虚铺厚度不同,路面产生不平整;凤眉段位高级路面基层,施工要求严,底基层和基层全部采用ABG摊铺机铺筑,仍由于基层顶面的平整度允许偏差为10mm,当沥青混凝土摊铺机作业时,尽管沥青混合料表面是摊平了,但该处因多出10mm松铺厚度,压实后仍出现低洼,这些说明基层不平整对路面平整度的有着严重的影响。
摊铺机是沥青路面面层施工的主要机具设备,其本身的性能及操作对摊铺平整度影响很大。摊铺机结构参数不稳定、行走装置打滑、摊铺机摊铺的速度快慢不匀、机械猛烈起步和紧急制动以及供料系统速度忽快忽慢都会造成面层的不平整和波浪。相关内容正文更有详细阐述。
关键词:
沥青混凝土路面、平整度、质量、沉降、配合比   
ABSTRACT
This article in view of the roadbed and the pavement smoothness, the asphalt concrete mixes up the quality, spreads paving the machinery and spreads paving processing which the craft, the compacting plant and the compaction craft, vertically and horizontally the construction joint, the bridge head jump off and so on to carry on the analysis, proposed the influence asphalt coagulation earthen road pavement smoothness factor and the corresponding solution.
In the construction, the basic unit does is uneven, regardless of how causes the surface layer to spread paving smoothly, because but the post-compaction empty shop thickness is also different, the road surface produces not smoothly; The phoenix eyebrow grade high-type surface basic unit, the construction requests strictly, the subbase and the basic unit use the 论文网http://www.lwfree.com/  六维毕业论文http://www.lwfree.cn/paver work, although the bituminous mixture surface was the booth has put down, because but this place were many 10mm loose shop thickness, the post-compaction still appears low-lying, these showing basic unit did not level to the pavement smoothness has the serious influence.
The paver is the bituminous pavement surface layer construction main machines and tools equipment, its itself performance and the operation to spreads paving smoothness influence to be very big.The paver design parameter unstable, walks the installment to slip the speed speed which, the paver spreads paving not uniform, the machinery violent start and the emergency brake as well as for the material system speed quickly suddenly slow can create the surface layer suddenly not smooth and the wave.The related content main text has the detailed elaboration.
Key words:
Asphalt Concrete Pavement, formation, Quality, the settlement, Match with a ratio 1254

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