Steel sheet pile is widely used in subway stations, tunnels, bridges, cofferdam revetment, municipal engineering, civil engineering, deep foundation trench, pipeline, basement retaining, water retaining excavation enclosure, play an important role in the project. So how to change the structure of the steel sheet pile itself, the premise of water pressure, wharf surface load, and so on? Wuxi Heng Yong construction experts tell you, to improve the overall stability of the wall shear stability, summed up the following points.
One, the grid storage materials for filling. The stone part of anti shear ability stronger or replace all need to stop construction, require the removal of a large area grid roof structure and a fixed part of the original lattice backfill sand inside the warehouse, in order to improve the lattice wall shear resistance. The stability of the frame of the construction period is reduced by the application of the construction period.
Two, interior material improvement and reinforcement. In order to improve the shear resistance of the grid wall, the original backfill sand in the grid is directly improved, such as cement rotary jet grouting pile and cement mixing pile.
Three, after the wall part of the filler for filling. The stone shear capacity of more replacement cell rear to stop production construction, to dismantle the rear Bay Coal corridor and other original design of wharf surface backfill within a certain range, in order to reduce the wall active soil pressure. Shi.
Four, after the improvement of part of the filling material. The lattice positions within a certain range of backfill sand into piles scheme without production, construction equipment, operation site is small; mixing pile for improving treatment (such as cement grouting pile and cement mixing pile), to reduce the wall after the main program needs the construction equipment, a high work site to remove the earth pressure is relatively large; segmentation. In addition to coal corridor, to stop the construction section.
Five, after the addition of pressure relief structure. The shear wall (such as cement mixing wall, cast-in-place pile, ground connection, etc.) is set up in order to reduce the direct effect of the active earth pressure on the wall of the chamber.
Six, reduce the original design load standard of wharf surface, that is, the use of limited load. In order to stop the construction, the upper part of the frame and the fixed facilities are needed to be demolished, and the cement mixing pile project requires large construction machinery. Large construction machinery and equipment, the rack is high, the operating site is large; need to stop construction. No concrete structure reinforcement or modification measures to limit the pier load, under extreme conditions, the overall stability of the structure of the overall security risks.