The pile strain of AM bulb cast-in-place pile is tested by high precision sliding micrometer, which can have high precision and reliable testing results.
采用高精度滑动测微计测试AM扩底桩在各级荷载下的桩身应变，测试精度高，测试结果可靠。
The technique of rammed bulb and solid inorganic material with high strength is an important way for the improvement of pile bearing and composite foundation reinforcement effect.
采用夯扩施工工艺和高强度的固体无机料是提高桩体承载力和复合地基承载力加固效果的重要环节。
Large diameter bulb pile constructed by manual excavation has many advantages, such as high bearing capacity, direct load transfer, and little settlement on proper geological conditions.
人工挖孔大直径扩底桩具有承载能力高，结构传力简明，地质条件合适时沉降小等优点。
Large diameter bulb pile constructed by manual excavation has many advantages, such as high bearing capacity, direct load transfer, and little settlement on proper geological conditions.
人工挖孔大直径扩底桩具有承载能力高，结构传力简明，地质条件合适时沉降小等优点。
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