老路拓宽路面开裂原因浅析

Initial analysis on pavement crack cause of old road widening

为减少老路拓宽路面拼接段的差异沉降,采用有限元理论,研究了老路拓宽后产生的不均匀沉降及由此对路面引起的附加应力,通过对路面附加应力的计算,分析了拓宽路面在使用期内不同阶段附加应力的力学特点与破坏方式。

In order to decrease the difference settlement on the pavement connection section of the old road widening, the author adopts the finite element theory, studies the uneven settlement and the additional stress resulted from this after the old road widening, according to the calculation of the pavement additional stress, analyzes the stress characteristics and destroy way of the widened pavement in different stages of the operation period.