拟建福厦高速铁路全风化花岗岩物理力学性质研究

研究目的:本文以拟建福厦高速铁路(DK210 200～DK 246 595)段全风化花岗岩为研究对象,对全风化花岗岩的物理力学性质进行全面研究,以期能对福厦高速铁路的设计、施工提供帮助。研究结果:该地段的桥梁桩基主要应考虑桩端持力层的变形,进行路基设计和施工时,要重点注意沉降量对工程的影响,认真检算沉降量,控制好加荷速率,提高密实度。

Study on Physical-mechanical Properties of All-weathered Granite for Fuzhou-Xiamen High-speed Railway to Be Built

Research purposes:Taking the all-weathered granites in the section between DK 210 200 and DK 246 595 of Fuzhou-Xiamen High-speed Railway to be built as a study object,the overall studies are done on the physical-mechanical properties of all-weathered granite for the purpose of providing assistances to design and construction of Fuzhou-Xiamen High-speed Railway. Research results:The deformation of force holding layer of pile end should be taken into account to the pile foundation of bridge in this section.When design and construction of subgrade,the attention should be paid to the influence on construction by subsidence volume,so the subsidence volume should be calculated and checked carefully,the loading speed rate should be controlled well and the compactedness should be enhanced.