Deep foundation pit retaining pile is a kind of foundation pit retaining structure, and piles are interlocked and aligned with each other. In the construction process, it can be divided into hard bite and soft bite. With the development of science and technology, the common pile arrangement method is unreinforced concrete pile (AThe pile)And reinforced concrete piles(BThe pile)Arrange at intervals. Construction, construction firstAThe pile,After the constructionBThe pile,inAThe pile concrete is completed before initial settingBThe construction of piles.APile,BThe pile is constructed by a full casing drill, cutting adjacentAIn this way, the concrete bite of the intersecting part of the pile can be realized. Large diameter occlusionAPiles, often of a square steel structure, are inserted into the concrete to increase structural stiffness.
At present, the vast majority of occlusal piles are constructed by all-casing drilling rig, which has the advantage of wide application range, and the all-casing punching and grasping method is adopted in the excavation process to remove obstacles. The disadvantage is that the falling and rising of the casing are driven by the full rotary jacking cylinder, which is slow. The grab capacity is limited, especially when it comes to clay, which is easy to adhere and affects the effect.
Features:
(1) Environmental protection: in the construction process, dry hole operation, no mud and other pollution sources; Hydraulic vibration hammer without resonance casing, low noise. Suitable for civilized construction of high requirements of the city.
(2Full casing wall protection: In the construction of sand, clay, silt and silt soil, the casing wall will not collapse in the process of hole formation and concrete perfusion, so as to ensure the quality of perfusion.
(3Non-extruded soil method: ensure that the soil around the construction pile is not squeezed during the process of sinking the construction pile, that is, the pile is not enlarged, the concrete is filled evenly, the appearance of the pile body is clean, and the adjacent buildings and the high-voltage cable cap are not affected.
(4) Widely used: due to the good sealing effect of occluding pile, it is widely used in deep foundation pit excavation with high requirement of sealing curtain.
As a new type of enclosure structure, the bored bite pile solves the problem of poor waterproofing effect of the traditional pile, and has the advantages of small impact on the environment, reliable quality and low cost, so it has the value of popularization.
Shanghai Qiangqiang Foundation Engineering Co., LTD. 's business covers foundation pit engineering, pile foundation engineering, land and waterFoundation treatment , slope treatment and other engineering fields. Around" Excellent technology, reliable process ", construction fast "technical requirements, Is to provide customers with land, water foundation engineering technical consultation, construction services and other comprehensive solutions of the entity enterprise. Contact Number:400-1002850
