Composite foundation for controlling post-construction settlement of road in soft soil area

• Main Authors: XIN JIANZHONG, LU YEXU, ZHANG GUOXIANG, ZHANG XUELEI, YU JINQING, SUN AIBIN, LI JING, SUN ZHAOGANG, LI CHAO, WANG MINGLI, ZHANG WEIKANG, WANG YAKUN, WU HAIGANG, HOU CHUNHUI
• Format: Patent
• Language: Chinese; English
• Published: 13.11.2020
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; OR VIADUCTS; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses a composite foundation for controlling post-construction settlement of a road in a soft soil area. A road-bridge transition section is divided into two stages and composite foundation treatment is adopted. The first-stage transition section is 10 cm in post-construction settlement; and the second-stage transition section is 10-30 cmin post-construction settlement. Accordingto the requirements of bearing capacity and settlement, pile intervals S1, S2 and S3 and pile lengths L1, L2 and L3 are set corresponding to 10 cm, 20 cm and 30 cm of post-construction settlement, and pile interval S1-S2-S3 transition and pile length L1-L2-L3 transition are completed in the second-stage transition section. The pile length of the roadbed in the width range is L1-L3, and the pile length gradually changes from L1-L3 to 5m from the width edge of the roadbed to the slope toe. The road-bridge transition section is divided into two stages, settlement is controlled stage by stage, and variable parameter desi