Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cofferdam soft consolidation construction method under thin covering layer hard riverbed condition
The invention discloses a cofferdam soft consolidation construction method under the condition of a thin covering layer hard riverbed. The cofferdam soft consolidation construction method specifically comprises the following steps that S1, survey lofting is conducted according to the size of a cofferdam; s2, a positioning box plate is manufactured, and a full-rotation all-casing drilling machine, a rotary drilling rig, a crawler crane and other mechanical equipment are placed on the operation steel platform in place in advance; s3, the box plate is positioned in place, and a full-rotation all-casing drilling machine and a rotary drilling rig are combined to conduct hole guiding construction on the thin covering layer hard riverbed; s4, after hole guiding is completed, medium-coarse sand is backfilled in the steel sleeve; s5, lock catch steel pipe piles are inserted and driven; s6, carrying out gas lift reverse circulation tank cleaning; s7, underwater groove sealing concrete is poured on the outer sides of the lock catch steel pipe piles; and S8, medium-coarse sand is poured into the inner sides of the lock catch steel pipe piles. According to the method, the problems of building-in and water stopping after the lock catch steel pipe pile cofferdam enters the guide hole groove under the condition of the thin covering layer hard riverbed are solved, and the water tightness and the safety of the lock catch steel pipe pile cofferdam under the condition of the thin covering layer hard riverbed can be effectively improved.
本发明公开了一种薄覆盖层硬质河床条件下的围堰软固结施工方法，具体包括以下步骤：S1、根据围堰尺寸进行测量放样；S2、制作定位箱板并提前将全回转全套管钻机、旋挖钻机及履带吊等机械设备放置于作业钢平台就位；S3、定位箱板就位，全回转全套管钻机与旋挖钻机联合在薄覆盖层硬质河床上进行引孔施工；S4、引孔完成后在钢套管内回填中粗沙；S5、插打锁扣钢管桩；S6、气举反循环清槽；S7、锁扣钢管桩外侧浇筑水下封槽混凝土；S8、锁扣钢管桩内侧灌中粗砂。本发明解决了薄覆盖层硬质河床条件下，锁扣钢管桩围堰进入引孔槽后的嵌固及止水问题，能有效提高薄覆盖层硬质河床条件下的锁扣钢管桩围堰的水密性和安全性。
Cofferdam soft consolidation construction method under thin covering layer hard riverbed condition
The invention discloses a cofferdam soft consolidation construction method under the condition of a thin covering layer hard riverbed. The cofferdam soft consolidation construction method specifically comprises the following steps that S1, survey lofting is conducted according to the size of a cofferdam; s2, a positioning box plate is manufactured, and a full-rotation all-casing drilling machine, a rotary drilling rig, a crawler crane and other mechanical equipment are placed on the operation steel platform in place in advance; s3, the box plate is positioned in place, and a full-rotation all-casing drilling machine and a rotary drilling rig are combined to conduct hole guiding construction on the thin covering layer hard riverbed; s4, after hole guiding is completed, medium-coarse sand is backfilled in the steel sleeve; s5, lock catch steel pipe piles are inserted and driven; s6, carrying out gas lift reverse circulation tank cleaning; s7, underwater groove sealing concrete is poured on the outer sides of the lock catch steel pipe piles; and S8, medium-coarse sand is poured into the inner sides of the lock catch steel pipe piles. According to the method, the problems of building-in and water stopping after the lock catch steel pipe pile cofferdam enters the guide hole groove under the condition of the thin covering layer hard riverbed are solved, and the water tightness and the safety of the lock catch steel pipe pile cofferdam under the condition of the thin covering layer hard riverbed can be effectively improved.
本发明公开了一种薄覆盖层硬质河床条件下的围堰软固结施工方法，具体包括以下步骤：S1、根据围堰尺寸进行测量放样；S2、制作定位箱板并提前将全回转全套管钻机、旋挖钻机及履带吊等机械设备放置于作业钢平台就位；S3、定位箱板就位，全回转全套管钻机与旋挖钻机联合在薄覆盖层硬质河床上进行引孔施工；S4、引孔完成后在钢套管内回填中粗沙；S5、插打锁扣钢管桩；S6、气举反循环清槽；S7、锁扣钢管桩外侧浇筑水下封槽混凝土；S8、锁扣钢管桩内侧灌中粗砂。本发明解决了薄覆盖层硬质河床条件下，锁扣钢管桩围堰进入引孔槽后的嵌固及止水问题，能有效提高薄覆盖层硬质河床条件下的锁扣钢管桩围堰的水密性和安全性。
Cofferdam soft consolidation construction method under thin covering layer hard riverbed condition
一种薄覆盖层硬质河床条件下的围堰软固结施工方法
HE HONGXING (Autor:in) / DENG YUNSHENG (Autor:in) / DONG YI (Autor:in) / YUAN DA (Autor:in) / XIE WEI (Autor:in) / ZHANG JINHUA (Autor:in) / TIAN HAO (Autor:in) / GONG ZHENG (Autor:in)
09.09.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Combined cofferdam construction method under hard riverbed
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2023
Complex riverbed steel sheet pile cofferdam and construction method
| Europäisches Patentamt | 2024
Bare rock riverbed bridge foundation hanging box cofferdam construction method
| Europäisches Patentamt | 2024
Cutting cofferdam piles at riverbed level
Engineering Index Backfile | 1938