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| 基于ANSYS的带切口沥青混合料试件半圆弯曲试验参数分析 | |
| 引用本文： | 付欣,刘秋,陈拴发.基于ANSYS的带切口沥青混合料试件半圆弯曲试验参数分析[J].公路,2012(1):23-27. |
| 作者姓名： | 付欣 刘秋 陈拴发 |
| 作者单位： | 1. 广东华路交通科技有限公司 广州市510545 2. 山东省路桥集团有限公司 济南市250400 3. 长安大学材料科学与工程学院 西安市710061 |
| 摘 要： | 采用带切口的试件进行半圆弯曲试验(SCB),可以更好地评价存在反射裂缝的沥青混凝土路面的抗裂性能。为了明确试件厚度、切口宽度、切口深度、支座间距等试验参数对带切口SCB试件力学响应的影响,采用ANSYS建立三维有限元模型对SCB试验进行数值模拟。计算结果表明:试件厚度选择50mm,切口宽度选择1.5mm较为合适;切口深度需要选择15mm、20mm、25mm等3个切口深度值再进行试验验证;支座间距为试件直径的0.8倍时,切口底部拉应力最敏感。 |
| 关 键 词： | 道路工程 沥青混凝土路面 半圆弯曲试验 ANSYS 数值模拟 |
Parameters Analysis of Semi-Circular Bending Test with Notched Asphalt Mixture Specimen Based on ANSYS |
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| FU Xin , LIU Qiu , CHEN Shuan-fa.Parameters Analysis of Semi-Circular Bending Test with Notched Asphalt Mixture Specimen Based on ANSYS[J].Highway,2012(1):23-27. | |
| Authors: | FU Xin LIU Qiu CHEN Shuan-fa |
| Institution: | 1.Guangdong Hualu Limited Company of Traffic Science and Technology;Guangzhou 510545,China; 2.Shandong LuQiao Group Co.,Ltd.,Jinan 250400,China; 3.School of Materials Science and Engineering,Chang’an University,Xi’an 710061,China) |
| Abstract: | It is preferable to carry out Semi-Circular Bending Test(SCB) with notched specimen to evaluate anti-cracking performance of asphalt concrete pavement with reflecting crack.In order to specify the mechanical response influence of test parameters such as specimen thickness,width and depth of notch,distance of supporting points,three-dimensional models are set up in ANSYS to simulate SCB test.The analysis results show that 50 mm in specimen thickness and 1.5 mm in width of notch is much more appropriate.It is required that 15 mm,20 mm and 25 mm in depth of notch should be verified by next experiment.It is most sensitive to the tensile stress on the bottom of the notch when the distance of supporting points reached the 0.8 times of specimen diameter. |
| Keywords: | road engineering asphalt concrete pavement semi-circular bending test ANSYS numerical simulation |
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