高速公路加宽高填路基差异沉降控制技术及标准

Differential Settlement Control Technology and Standard for Widened and High Filling Subgrade of Expressway

公路建设工程中,路基沉降处理是一项十分复杂的控制技术,常常出现较大的路基沉降差异,为了避免这一问题,同时为减少坍塌、断裂事故的发生,对加宽高填路基差异沉降标准和控制技术进行研究。首先,进行加宽高填路基差异沉降标准的设定;其次获取加宽高填层级参数,建立IRI双向高填沉降处理结构;最后构建单元网格控制模型,采用加设反压法实现加宽高填路基差异沉降控制,调整对应的控制目标,为后续的工程建设奠定更为坚实的基础。结果表明,与传统的路基沉降控制技术相比,本文提出的路基沉降控制技术更稳定、灵活。在复杂的建筑工程环境中,能够更好实现结构的均衡施工和对路基宽度的控制。

In highway construction engineering,subgrade settlement treatment is a very complex control technology,and large differences in subgrade settlement often occur.In order to avoid this problem,and reduce the occurrence of collapse and fracture accidents,the differential settlement standard and control technology of widened high filled subgrade are studied.First of all,the differential settlement standard of widened high filled subgrade is set,and secondly obtain the widened high fill level parameters,establish the IRI two-way high fill settlement treatment structure,and finally,a cell grid control model is built,adopt the additional backpressure method to realize the differential settlement control of widened high fill subgrade,adjust the corresponding control target,and lay a more solid foundation for the follow-up engineering construction.The results show that,compared with the traditional subgrade settlement control technology,the subgrade settlement control technology proposed in this paper is relatively more stable and flexible.In the complex construction environment,the balanced construction of the structure and the control of the width of the subgrade can be better realized.