下穿高铁U型槽复合地基载荷试验研究

Load Test Research of U-groove Composite Foundation under High-speed Railway

结合下穿京广高铁U型槽复合地基工程,对U型槽复合地基载荷进行了试验研究,分析了复合地基承载力特征值,并进行了现场测试。发现案例工程复合地基的最大沉降量和P-s曲线数值均正常,沉降速率稳定,满足设计要求。此外,试验研究结果表明,U型槽复合地基的承载力满足设计要求,对下穿京广高铁U型槽复合地基处理设计和施工应用可提供可靠的参考依据。

Combining with the U-groove composite foundation project of Beijing-Guangzhou high-speed railway, the experiment has been done for the load of U-groove composite foundation the chayacteylstic value of bearing capacity has been analyzed,and the field test has been done.The maximum settlement and P-s curve values measured in the field are both normal, and the settlement rate is stable to meet the design requirements. The test results show that the bearing capacity of U-groove composite foundation meets the design requirements, which provides a reliable reference for the design and construction application of U-groove composite foundation under Beijing-Guangzhou high-speed railway.