首页 | 本学科首页   官方微博 | 高级检索  
     检索      

大粒径沥青混合料防裂机理耦合数值分析
引用本文:资建民,路庆昌,王海军,黄求喜,万伟.大粒径沥青混合料防裂机理耦合数值分析[J].公路交通科技,2009,26(5).
作者姓名:资建民  路庆昌  王海军  黄求喜  万伟
作者单位:1. 华中科技大学,土木工程与力学学院,湖北,武汉,430074
2. 长春市政工程设计研究院宁波分院,浙江,宁波,315040
3. 西华大学建筑与土木工程学院,四川,成都,610039
基金项目:湖北省交通厅科技攻关项目 
摘    要:采用有限元方法分析LSAM-30基层沥青路面结构的最不利荷位在行车荷载、温度荷载以及两者耦合应力作用下的应力状态,同时与设置相同厚度的ATPB-30、AC-30I基层的应力计算结果进行对比分析,结果表明LSAM-30、ATPB-30基层比AC-301基层有较好的缓解反射裂缝的能力。LSAM-30粗骨料多,公称粒径大,因而导热系数大,温缩系数小,回弹模量小,可有效减小结构层层间温度梯度,进而减小层间温度应力,同时其表现出的足够的柔性也可以充分地吸收裂缝处的应变能,因而具有较强的防裂能力。通过工程实例对比分析了LSAM-30、ATPB-30、AC-30I,3种基层的防裂性能。通过长期实际使用情况表明,铺设LSMA基层的路面使用状况良好、未发现裂缝生长迹象,而铺设其他2种基层的路面则出现了不同程度的裂缝,结果表明LSMA基层具有明显的防裂性能。

关 键 词:道路工程  防裂机理  数值分析  大粒径沥青混合料  反射裂缝

Coupled Numerical Analysis of Anti-crack Mechanism of Large Stone Asphalt Mixture
ZI Jianmin,LU Qingchang,WANG Haijun,HUANG Qiuxi,WAN Wei.Coupled Numerical Analysis of Anti-crack Mechanism of Large Stone Asphalt Mixture[J].Journal of Highway and Transportation Research and Development,2009,26(5).
Authors:ZI Jianmin  LU Qingchang  WANG Haijun  HUANG Qiuxi  WAN Wei
Institution:1.School of Civil Engineering & Mechanics;Huazhong University of Science & Technology;Wuhan Hubei 430074;China;2.Ningbo Branch of Changchun Municipal Engineering Design & Research Institute;Ningbo Zhejiang 315040;3.School of Architecture & Civil Engineering;Xihua University;Chengdu Sichuan 610039;China
Abstract:Stresses of pavement with flexible base of LSAM-30,ATPB-30 and AC-30I at the most adverse point under the function of traffic load and temperature load as well as the coupling of them were calculated and compared by finite element method.The result indicates that flexible bases of LSAM-30 and ATPB-30 and more effective in the prevention of reflection crack.Because of the great volume of coarse aggregate and large maximum nominal particle-size,the LSAM-30 thermal conductivity is greater,and the temperature s...
Keywords:
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号