A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Composite foundation treatment method for open caisson engineering
The invention provides a composite foundation treatment method for open caisson engineering. The composite foundation treatment method comprises the following steps that 1, a riprap soil filling layer of a construction area is turned and dug, stones are removed, and backfilling and replacing are carried out by adopting plain soil; 2, the inner side and the outer side of the well wall of an open caisson are reinforced through first sand piles correspondingly; 3, a high-pressure jet grouting pile waterproof curtain is arranged at the position, with the preset distance, of the periphery of the open caisson; 4, a second sand pile is arranged on the inner side of the first sand pile in the open caisson, and a powder spraying pile is arranged between the first sand pile and the powder spraying pile; and 5, a sand cushion layer is arranged on the second sand pile and the powder spraying pile in the construction area. The composite foundation treatment method is suitable for geological conditions with a silt layer and the riprap soil filling layer, the foundation is reinforced through construction, and therefore construction can be carried out through an open caisson method. The cost of the open caisson method and the foundation reinforcement is lower than that of open caisson in other schemes. The sinking stability of the open caisson under the soft geological condition is effectively improved, and the risk of sudden sinking and the like is reduced.
本申请提供一种用于沉井工程的复合地基处理方法，包括：步骤一、对施工区域的抛石填土层进行翻挖，将石块清除并采用素土回填置换；步骤二、沉井的井壁的内外两侧分别采用第一砂桩加固；步骤三、在沉井外围预设距离处设置高压旋喷桩止水帷幕；步骤四、在沉井中的第一砂桩内侧设置第二砂桩，在第一砂桩和粉喷桩之间设置粉喷桩，步骤五、在施工区域的第二砂桩和粉喷桩上设置砂垫层。该方法适用于具有淤泥层和抛石填土层的地质条件，通过施工对地基进行了加固，从而能够使用沉井法进行施工。沉井法和地基加固的成本费用低于其他的方案沉井费用。并且有效提高了沉井在软弱地质条件下的下沉稳定性，降低了突沉等风险。
Composite foundation treatment method for open caisson engineering
The invention provides a composite foundation treatment method for open caisson engineering. The composite foundation treatment method comprises the following steps that 1, a riprap soil filling layer of a construction area is turned and dug, stones are removed, and backfilling and replacing are carried out by adopting plain soil; 2, the inner side and the outer side of the well wall of an open caisson are reinforced through first sand piles correspondingly; 3, a high-pressure jet grouting pile waterproof curtain is arranged at the position, with the preset distance, of the periphery of the open caisson; 4, a second sand pile is arranged on the inner side of the first sand pile in the open caisson, and a powder spraying pile is arranged between the first sand pile and the powder spraying pile; and 5, a sand cushion layer is arranged on the second sand pile and the powder spraying pile in the construction area. The composite foundation treatment method is suitable for geological conditions with a silt layer and the riprap soil filling layer, the foundation is reinforced through construction, and therefore construction can be carried out through an open caisson method. The cost of the open caisson method and the foundation reinforcement is lower than that of open caisson in other schemes. The sinking stability of the open caisson under the soft geological condition is effectively improved, and the risk of sudden sinking and the like is reduced.
本申请提供一种用于沉井工程的复合地基处理方法，包括：步骤一、对施工区域的抛石填土层进行翻挖，将石块清除并采用素土回填置换；步骤二、沉井的井壁的内外两侧分别采用第一砂桩加固；步骤三、在沉井外围预设距离处设置高压旋喷桩止水帷幕；步骤四、在沉井中的第一砂桩内侧设置第二砂桩，在第一砂桩和粉喷桩之间设置粉喷桩，步骤五、在施工区域的第二砂桩和粉喷桩上设置砂垫层。该方法适用于具有淤泥层和抛石填土层的地质条件，通过施工对地基进行了加固，从而能够使用沉井法进行施工。沉井法和地基加固的成本费用低于其他的方案沉井费用。并且有效提高了沉井在软弱地质条件下的下沉稳定性，降低了突沉等风险。
Composite foundation treatment method for open caisson engineering
用于沉井工程的复合地基处理方法
CHEN HAILIANG (author) / DU XIAOFENG (author) / YANG FAN (author) / LIU ZHUANG (author) / WEI SHANGQI (author)
2021-12-10
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2023
Method for Constructing Foundation Using Open Caisson and Open Caisson Used Therein
| European Patent Office | 2019