Large diameter bulbpile 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。
2
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。
3
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.