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黄金龙

 

（ 福州市规划设计研究院集团有限公司 ，福建 福州 350108)

摘   要 ：设置隔裂夹层能提高“白改黑“复合路面的疲劳寿命，延缓加铺面层反射裂缝的出现。通过扩展 有限元数值模型，对比不同条件下设置微黏结级配碎石隔裂夹层，研究隔裂夹层复合路面的疲劳寿命。结果表明：对旧水泥混凝土路面出现断板、错台等严重路面病害，设置微黏结级配碎石隔裂夹层能显著提高复合路面的疲劳寿命；对旧板打裂压稳后，设置微黏结级配碎石隔裂夹层能提高复合路面的疲劳寿命，建议打裂的板块 尺寸控制在 100 cm 左右为宜；对于旧板碎石化后设置隔裂夹层，复合路面疲劳寿命提高不显著；微黏结级配碎 石隔裂夹层复合路面结构。经过多年工程实践运用，效果良好，具有一定的推广价值。

关键词：道路工程 ；复合式路面 ；微黏结级配碎石隔裂夹层 ；疲劳寿命

中图分类号：U416           

文献标志码：A            

文章编号： 1005- 8249   (2024)  05- 0108- 08 

DOI:10. 19860/j.cnki.issn1005 - 8249.2024.05 .020

 

HUANG Jinlong

(Fuzhou Planning & Design Research Institute Group Co.，Ltd.，Fuzhou 350108 ,  China)

 

Abstract: The installation of a crack-separating interlayer can improve the fatigue life of the "white-to-black" composite pavement and delay the appearance of reflective cracks on the overlay surface.Using the extended finite element numerical model, the impact of setting micro-bonding graded crushed stone interlayer under different conditions is compared and analyzed, and corresponding engineering suggestions are proposed.The results show that the setting of a micro-bonding graded crushed stone interlayer can significantly improve the fatigue life of composite pavements under severe pavement defects such as broken slabs and faulted slabs on old cement concrete pavements;After cracking and stabilizing the old plates, setting up a micro-bonding graded crushed stone interlayer can improve the fatigue life of the composite pavement. It is recommended that the size of the cracked plates be controlled at around 100 cm;For the old plate crushed and then set up a crack-resistant interlayer, the fatigue life of the composite pavement is not significantly improved;The micro-bonding graded crushed stone interlayer composite pavement structure has been applied in engineering practice for many years, with good results and certain promotion value.

Keywords: road engineering; composite pavement; micro-bonded graded gravel interlayer; fatigue life

作者简介：黄金龙  (1989—), 男，硕士，高级工程师，研究方向：道路设计与研究。

收稿日期：2023- 04- 04