为研究承台对高架桥下桥墩间路面不均匀沉降的影响,运用midas GTS NX软件从承台埋深和路面刚度两方面对高架桥下路面不均匀沉降的影响进行模拟分析。当承台的埋深在1~2.5 m的范围内时,随着承台的埋深增加,路面的沉降差也逐渐减小,并且减小幅度较大。当路面的弹性模量在5~15 GPa的范围内时,道路的沉降差递减变化显著,递减的速率较大,差值减小幅度也较大。随着承台埋深的增加,高架桥下路面的沉降差逐渐减小。随着路面刚度的增加,高架桥下路面的沉降差也逐渐减小。适当的增加承台的埋深,提高路面刚度有利于改善高架桥下桥墩间路面的不均匀沉降。
In order to study the influence of cap on uneven settlement of pavement under viaducts,the midas GTS NX software was used to simulate the effect of uneven settlement on the pavement under the viaduct from the depth of the cap and the stiffness of the pavement.When the depth of the cap is in the range of 1~2.5 m,the settlement difference of the pavement is gradually reduced with the increase of the depth of cap,and the reduction is larger.When the elastic modulus of the pavement is in the range of 5~15 GPa,the settlement difference of the road decreases remarkably,the decreasing rate is larger and the difference decreases more.With the increase of the depth of cap,the settlement difference of pavement under the viaduct decreases gradually.With the increase of the road surface stiffness,the settlement difference of the pavement under the viaduct also gradually decreases.Suitable increase of the depth of the cap and improving the road surface stiffness is conducive to improve the uneven settlement of pavement under the bridge between the viaducts.
Transportation Science & Technology
uneven pavement subsidence
depth of cap