Larsen sheet piles to undertake projects around Shenzhen

In coastal areas due to the complex geological conditions, application and pay attention to the program features Larsen steel sheet pile in deep foundation, point, difficulty 1) project a larger scale, tight time schedule, difficult, deep excavation is the difficulty of the project and one of the key. Excavation depth according to the thickness build island, cap, bottom cushion design elevation and determination, excavation depths between 6m ~ 9m, are deep pit. According JGJ 120-1999 "Building excavation Technical specification" requirement, no buildings around foundation and structure, supporting structural damage, soil instability or too bad landscaping and construction of underground structures for large deformation around foundation affect the normal, so the security level set for the two, the importance coefficient γ0 = 1.00. 2) steel sheet pile with the overall stiffness, good waterproof performance characteristics, in clayey layer deep water pier foundation construction even need underwater, you can save a lot of on-site processing components, particularly certain advantages. According to the characteristics of the current development of the province's construction industry, Larsen steel sheet pile and installed professional construction companies need to introduce remote construction, construction and progress control are very difficult from the coastal cities. 3) Larsen steel sheet pile in the construction process, buckling occurs when the steel sheet pile - administration, twisting, deformation, support system and multi-spot welding of steel sheet pile sheet pile link cause severe burns, deformed steel sheet pile in supporting the process, squeeze severe, removal and other factors can not be part of the steel sheet pile construction is completed, a large number of steel sheet pile is damaged in for scrap, amortization treatment, the amount of steel sheet pile amortization will reach 50% to 60%. 4) steel sheet pile Larsen support horizontal direction within 2 to 4, the lateral spacing of 4m ~ 5m, according to local sites pier position adjustment. Due to poor geological conditions, centralized support system around the prison severe stress and deformation; lateral support system before the completion of construction of reinforced concrete solid support system can not be removed; support (Φ299 × 10 seamless steel tubes) in the bottom of the pit below the caps Caps pouring concrete cushion is wrapped, causing the support system will be fully amortized, using the one-time investment. It is supported in the recovery rate of less than 20%.