A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pile foundation drilling construction method combining down-the-hole drill with impact drill
The invention belongs to the field of bridge foundation engineering, in particular to a pile foundation drilling construction method combining a down-the-hole drill with an impact drill. Before drilling of the impact drill, the down-hole drill is used for performing drilling, loosen blasting and presplitting at a pile position firstly so as to damage the integrity of a rock layer and increase thefriction and impact surface of rocks, and then the friction and impact between the broken rocks during the subsequent impact drilling of the impact drill so as to speed up the construction progress and shorten the construction period. The construction method has the beneficial effects of effectively solving the problem of difficult drilling of a cast-in-place pile in a hard rock stratum area, shortening the drilling time of the impact drill, shortening the construction period of a pile foundation and reducing the construction cost, along with high operability.
本发明属于桥梁基础工程领域，是一种潜孔钻配合冲击钻桩基成孔施工方法，在冲击钻钻进前，首先采用潜孔钻在桩位处钻孔、松动爆破预裂，破坏岩层的整体性，增加岩石摩擦撞击面，在随后的冲击钻冲击成孔时增加破碎岩石间的摩擦、撞击，进而加快施工进度、缩短施工周期。本发明的有益效果：本法可操作性强，有效地解决了坚硬岩层区域灌注桩钻进困难的问题，缩短冲击钻成孔时间，缩短了桩基施工周期，降低了施工成本。
Pile foundation drilling construction method combining down-the-hole drill with impact drill
The invention belongs to the field of bridge foundation engineering, in particular to a pile foundation drilling construction method combining a down-the-hole drill with an impact drill. Before drilling of the impact drill, the down-hole drill is used for performing drilling, loosen blasting and presplitting at a pile position firstly so as to damage the integrity of a rock layer and increase thefriction and impact surface of rocks, and then the friction and impact between the broken rocks during the subsequent impact drilling of the impact drill so as to speed up the construction progress and shorten the construction period. The construction method has the beneficial effects of effectively solving the problem of difficult drilling of a cast-in-place pile in a hard rock stratum area, shortening the drilling time of the impact drill, shortening the construction period of a pile foundation and reducing the construction cost, along with high operability.
本发明属于桥梁基础工程领域，是一种潜孔钻配合冲击钻桩基成孔施工方法，在冲击钻钻进前，首先采用潜孔钻在桩位处钻孔、松动爆破预裂，破坏岩层的整体性，增加岩石摩擦撞击面，在随后的冲击钻冲击成孔时增加破碎岩石间的摩擦、撞击，进而加快施工进度、缩短施工周期。本发明的有益效果：本法可操作性强，有效地解决了坚硬岩层区域灌注桩钻进困难的问题，缩短冲击钻成孔时间，缩短了桩基施工周期，降低了施工成本。
Pile foundation drilling construction method combining down-the-hole drill with impact drill
一种潜孔钻配合冲击钻桩基成孔施工方法
HUI PENGJIA (author) / LI BINGQIANG (author) / YANG YINGJUN (author) / ZHANG ENJIAN (author) / LIU ZHANGBAO (author) / HU JIULIN (author) / YANG LIJUN (author) / YANG SHUPENG (author)
2020-09-01
Patent
Electronic Resource
Chinese
Drill rod structure for core drilling detection of foundation pile
| European Patent Office | 2021
Rotary drill drilling cast-in-place pile construction method
| European Patent Office | 2015
Sleeve type drill bit and composite pile foundation construction method
| European Patent Office | 2022