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河南省在公路桥梁基础工程中采用冲孔灌注桩,创造了一种轻便的冲孔工具——火箭锥。这种冲孔工具用之于一般泥土砂石河床中冲造桩孔是有效的。河南省的经验已很快地推广到了全国各地。这种冲孔灌注桩的设备和施工经验,对工业及民用建筑的桩基础施工亦有很大参考价值,如在实践中广为采用,则将会使这一经验得到进一步的充实和发展。冲孔灌注桩关键在于冲造桩孔,冲孔问
Henan Province adopted punched and cast-in-place piles in the foundation engineering of highway bridges to create a light-weight punching tool, the rocket cone. This type of punching tool is effective for punching pile holes in a general earth and gravel river bed. The experience of Henan Province has quickly spread to all parts of the country. This kind of equipment and construction experience for punching and grouting piles is also of great reference value for construction of pile foundations in industrial and civil buildings. If it is widely adopted in practice, this experience will be further enriched and developed. The key to punching cast-in-place piles is to punch pile holes and punch holes.