摘要
随着城市路网规划调整,部分城市支路道路等级提升至次干路。道路等级提升,对原路面结构强度的要求也相应提高。如何合理利用现有道路资源,节省工程投资,是道路升级改造过程中需要重视的问题。本文通过创建路面结构模型,利用原路面当量回弹模量Et和加铺层抗压模量的累加,计算出修正弯沉值;同时通过预测交通量的累计轴载计算出设计弯沉值。将两弯沉值进行比较,根据比较结果,采用不同的改建方案,并在工程实践中予以应用。
With the adjustment of urban road network planning,the road grades of some urban branch roads have been upgraded to secondary roads. The upgrading of road grades will also increase the strength of the original pavement structure.How to make rational use of existing road resources and save project investment is an issue that needs to be paid attention to in the process of road upgrading. In this paper,by creating a pavement structure model,using the original pavement equivalent modulus of resilience Et and the cumulative compressive modulus of the overlay,the corrected deflection value is calculated;at the same time,the designed deflection value is calculated by predicting the cumulative axial load of the traffic volume. Comparing the two deflection values,according to the comparison results,adopt different reconstruction schemes and apply them in engineering practice.
作者
王斌
WANG Bin(Shanghai Pudong Architectural Design and Research Institute Co.,Ltd.,Shanghai 201204,China)
出处
《交通节能与环保》
2018年第3期64-66,共3页
Transport Energy Conservation & Environmental Protection
关键词
道路工程
等级提升
路面结构
回弹模量
强度验算
road engineering
grade improvement
pavement structure
rebound modulus
strength check
