吹填固化土路基试验与数值模拟分析

研究了唐山市曹妃甸滨海地区吹填土的特性,通过室内土工试验得出吹填固化土相关数据和岩土专业软件FLAC3D数值模拟分析了固化吹填土和正常路基结构的沉降情况。试验结果说明固化剂G能够有效提高吹填土的压缩模量;数值模拟分析表明应用固化吹填土作为路基结构的一部分相对于传统路基结构,沉降仅增加1.53mm,完全不影响其路用性能,能较真实地模拟路基沉降情况;经济效益对比分析说明固化剂应用于吹填路基中,具有极大的工程推广和利用价值。

Test of Stabilized Hydraulic Fill Roadbed and Numerical Simulation Analysis

This article studied the characteristics of hydraulic fill in Caofeidian coastal regions of Tangshan city, relevant data of stabihzed hydraulic fill were obtained by laboratory soil tests, and using the geotechnical professional software FLAC3D the settlement of stabilized soil and normal roadbed struc- ture were simulated and analyzed. Results of laboratory tests shows that stabilizer G can improve the compression modulus of hydraulic fills effectively; numerical simulation shows that compared with traditional roadbed structure, the settlement of roadbed with stabilized soil as a part of the structure increased by only 1.53 mm which do not affect the pavement performance, and it can simulate the set- tlement of roadbed more truly. The comparative analysis of economic efficiency shows that the use of stabilizer in the hydraulic fill roadbed has significant economic benefits and a high value of promotion and application to engineering.