超浅埋超小净距花岗岩隧道中两种开挖工法的受力分析  

Stress Analysis of Two Excavation Methods in Ultra-Shallow Buried and Ultra-Small Clear Distance Granite Tunnel

作　　者：聂佳佳 NIE Jia-jia(CCCC First Highway Huanan Engineering Co.Ltd.,Guangzhou 511300,China)

机构地区：[1]中交一公局华南工程有限公司,广州511300

出　　处：《工程建设与设计》2021年第7期65-67,共3页Construction & Design for Engineering

摘　　要：结合某隧道工程,提出“三台阶法+钢管桩”开挖工法,通过建立力学模型,模拟计算常规CD法开挖与“三台阶法+钢管桩”开挖的受力情况,并对2种工法经济效益进行分析。结果表明:应用“三台阶法+钢管桩”不仅缩短工期,而且经济效益更高。Combined with a tunnel project,this paper puts forward"three steps method+steel pipe pile"excavation method,by establishing a mechanical model,the stress of conventional CD method and"three-step method+steel pipe pile"excavation is simulated and calculated.And the economic benefit of the two construction methods is analyzed.The results show that the application of"three-step method+steel pipe pile"not only shortens the construction period,but also has higher economic benefit.

关 键 词：超浅埋超小净距隧道 CD法 三台阶法+钢管桩 受力分析 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]