劲性复合桩施工工艺
Composite pile construction technology is a kind of pile foundation construction technology, which is widely used in the construction of bridge and building foundation. The composite pile is composed of steel pipe pile and concrete pile. The steel pipe pile is used as the main body of the composite pile, and the concrete pile is used as the auxiliary body. The composite pile has the advantages of high bearing capacity, small deformation, good corrosion resistance and long service life.
一、桩端处理
pouring1. Pile End Treatment
在施工前，首先要对桩端进行处理，防止桩端水泥浆渗入桩内，影响桩的使用寿命。一般采用防尘膜、桩封或桩塞处理。
Before construction, the pile end should be treated first to prevent cement slurry from infiltrating into the pile and affecting the service life of the pile. Generally, dustproof film, pile s
eal or pile plug are used for treatment.
二、桩钻
2. Pile Drilling
桩钻是桩施工的重要环节，通常采用液压钻机进行钻掘，根据地质条件，选择合适的钻头，如土质软，可以采用大口径钻头，土质硬，可以采用小口径钻头。
Pile drilling is an important part of pile construction. Usually, hydraulic drilling machine is used for excavation. According to the geological conditions, suitable drill bit should be selected. If the soil is soft, large diameter drill bit can be used, and if the soil is hard, small diameter drill bit can be used.
三、桩管安装
3. Pile Pipe Installation
桩管的安装是桩施工的重要环节，桩管的安装要求合理，桩管的深度要按照设计要求，严格
控制，以保证桩管的安装质量。
Pile pipe installation is an important part of pile construction. The installation of pile pipe should be reasonable, and the depth of pile pipe should be strictly controlled according to the design requirements to ensure the installation quality of pile pipe.
四、混凝土浇注
4. Concrete Pouring
混凝土浇注时，要求混凝土搅拌均匀，控制水泥种类，混凝土的浇筑要求要稳定，以保证混凝土的浇筑质量。
When pouring concrete, it is required that the concrete be mixed evenly, the type of cement be controlled, and the pouring of concrete be stable to ensure the quality of concrete pouring.
五、桩基处理
5. Pile Foundation Treatment
桩基处理是桩施工的重要环节，必须对桩基进行处理，以保证桩基的质量。一般采用桩基封口处理，用水泥混凝土封口，以保证桩基的质量。
Pile foundation treatment is an important part of pile construction. The pile foundation must be treated to ensure the quality of the pile foundation. Generally, the pile foundation is sealed with cement concrete to ensure the quality of the pile foundation.