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Construction method of large-diameter ultra-long punched cast-in-place pile in compact pebble bed area
The invention belongs to the technical field of cast-in-place pile construction, discloses a construction method of a large-diameter ultra-long punched cast-in-place pile in a compact pebble bed area,and solves the problem that the large-diameter ultra-long punched cast-in-place pile in the compact pebble bed area easily happens diameter expanding and hole collapse in the construction process. According to the method, the phenomena of diameter expansion, hole collapse and the like caused by complex rock components, different particle sizes, even inclusion of boulder and hard rock layers, large underground water amount and even holes existing in local areas in a geological area formed by a dense pebble bed can be effectively avoided, and the hole forming efficiency and the pile foundationquality are improved.
本发明属于灌注桩施工技术领域，公开了一种密实卵石层地区大直径超长冲孔灌注桩施工方法，解决密实卵石层地区进行大直径超长冲孔灌注桩在施工过程中容易出现扩径和塌孔的问题。本发明能够有效的避免由密实卵石层构成的地质区域，由于岩石成分复杂，且粒径大小不一，甚至还有漂石、坚石层夹杂其中，且地下水量大，甚至局部地区存在空洞而出现扩径和塌孔等现象，提高成孔效率和桩基质量。
Construction method of large-diameter ultra-long punched cast-in-place pile in compact pebble bed area
The invention belongs to the technical field of cast-in-place pile construction, discloses a construction method of a large-diameter ultra-long punched cast-in-place pile in a compact pebble bed area,and solves the problem that the large-diameter ultra-long punched cast-in-place pile in the compact pebble bed area easily happens diameter expanding and hole collapse in the construction process. According to the method, the phenomena of diameter expansion, hole collapse and the like caused by complex rock components, different particle sizes, even inclusion of boulder and hard rock layers, large underground water amount and even holes existing in local areas in a geological area formed by a dense pebble bed can be effectively avoided, and the hole forming efficiency and the pile foundationquality are improved.
本发明属于灌注桩施工技术领域，公开了一种密实卵石层地区大直径超长冲孔灌注桩施工方法，解决密实卵石层地区进行大直径超长冲孔灌注桩在施工过程中容易出现扩径和塌孔的问题。本发明能够有效的避免由密实卵石层构成的地质区域，由于岩石成分复杂，且粒径大小不一，甚至还有漂石、坚石层夹杂其中，且地下水量大，甚至局部地区存在空洞而出现扩径和塌孔等现象，提高成孔效率和桩基质量。
Construction method of large-diameter ultra-long punched cast-in-place pile in compact pebble bed area
密实卵石层地区大直径超长冲孔灌注桩施工方法
WANG ANLIANG (author)
2020-06-16
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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