Composite foundation for controlling post-construction settlement of highway 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: 26.01.2021
• 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 utility model discloses a composite foundation for controlling post-construction settlement of a highway in a soft soil area, which is characterized in that a road and bridge transition section isdivided into two stages which are both treated by adopting the composite foundation. In the first-stage transition section, settlement after construction is carried out for 10 cm; and in the second-stage transition section, settlement after construction is carried out for 10 cm and 30 cm. According to the requirements of bearing capacity and settlement, the pile spacing S1, S2 and S3 and the pilelength L1, L2 and L3 are set corresponding to the post-construction settlement of 10 cm, 20 cm and 30 cm, and pile spacing S1S2S3 transition and pile length L1L2L3 transition are completed in the second-stage transition section. The pile length in the width range of the roadbed is L1L3, and the pile length is gradually changed from L1L3 to 5m from the width edge of the roadbed to the slope toe. The road and bridge transit