Advance support pipe shed structure under silty-fine sand geological conditions and construction method thereof

• Main Authors: YIN FEIXIANG, WANG CAN, LI XIAOMENG, JIANG AICI, ZHENG WEIWEI, SHEN JINGJING
• Format: Patent
• Language: Chinese; English
• Published: 22.05.2020
• Subjects: ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention discloses an advance support pipe shed structure under silty-fine sand geological conditions and a construction method thereof. The advance support pipe shed structure comprises an n-shaped pipe shed arranged along the outer contour line of a designed box culvert. A plurality of horizontal jet grouting piles are arranged on the periphery of each of steel pipes surrounding the n-shaped pipe shed. The adjacent horizontal jet grouting piles are in bonded lap joint, and the horizontal jet grouting piles and the adjacent steel pipes are in bonded lap joint to form a steel pipe and horizontal jet grouting pile consolidation body. The advance support pipe shed structure has the advantages that grout in the horizontal jet grouting piles are limited within the soil reinforcement rangeof the n-shaped pipe shed; the filling part and range of the grout can be controlled through a jet grouting pile machine; high-pressure cement grout cuts and destroys a silty-fine sand layer, and a frame is formed by mixture