【摘要】 桩式复合管棚套拱结构是一种新型结构,分析表明该结构既能发挥桩体的支护功能,降低边坡的刷方高度,又能提高套拱结构的承载力,防止管棚套拱的下沉和滑移。为地形偏压和围岩破碎软弱的隧道洞口安全进洞提供了一种好方法。更多还原

【Abstract】 Pile type composite pipe-shed arch structure is a new type of structure,the analysis shows that the structure can play a pile supporting function,reduces the slope side of the brush height,but also can improve the bearing capacity of arch structure,to prevent the pipe shed arch of subsidence and slippage.This structure is a good choice for the tunnel entrance construction,in particular for the shallow bias terrain and weak surrounding rock section.更多还原