搅拌桩、静压桩（Mixing pile and static pile）.docVIP

搅拌桩、静压桩（Mixing pile and static pile） Measures for quality control of cement mixing pile construction As is known to all, during the construction of soft clay foundation, the cement mixing pile construction is one of the common processing method, its main features are: a reasonable time limit, low pressure during the construction of the operation, safe and reliable, less pollution, no vibration, no noise, and buildings with no adverse effects on the surrounding environment. How to increase the bearing capacity of soft soil foundation and reduce the compressive quantity of soft soil foundation, the key is to control the construction quality of cement mixing pile. 1. Quality control of preparation before construction 1.1 construction preparation and site formation 1.1.1 the access road of construction machinery should be repaired; 1.1.2 the power supply facilities shall be complete. In the construction site without external power supply, diesel generator shall be equipped; 1.1.3 identify obstacles within the construction scope. There are large stones and underground pipelines underground, etc. All obstacles should be cleared or established in advance to avoid and ensure safe production; 1.1.4 level is flat. In the area where the construction of the pile is prepared, the surface of the ground is roughing with a bulldozer, then the coarse sand cushion layer in the backfill, then the levelling machine. Where conditions are available, the roller can be used for 1 ~ 2 times. 1.2 construction lofting First using total station (or transit) accurately release starting pile construction paragraph and line position, and design requirements of steel pile spacing with sticks to identify the pile location within the scope of construction (general according to the regular triangle arrangement). 1.3 quality control of raw materials 1.3.1 the quality of cement (curing agent) is the key, and the cement variety and quality shall meet the requirements of design and specification. Before