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Foundation pit excavation supporting method suitable for watercourse with shallow water and sludge
Provided is a foundation pit excavation supporting method suitable for a watercourse with shallow water and sludge. A construction platform is constructed in the shallow water of the watercourse twice in a filling mode, a supporting structure for foundation pit excavation is established on the construction platform, foundation pit excavation and bearing platform construction are carried out for the second time under the protection of the supporting structure, the foundation pit supporting structure is dismantled after bearing platform construction is finished, and a supporting process can be completed. In combination with specific geological and hydrological characteristics of the watercourse with the shallow water and the sludge, a steel cofferdam and the whole bearing platform and foundation pit excavation supporting structure are constructed by means of common profile steel and a common excavation mechanism and matched with an earth cofferdam in the watercourse, so that under the premise that a bearing platform and foundation pit supporting effect is brought into play, and investment of project capital is reduced substantially. Through tests, compared with a steel sheet pile cofferdam constructed by means of 9m long Larsen steel sheet piles and a creeper truck with a vibration hammer and a mechanical arm, 84.1% of cost can be saved. Because the construction method is simplified, the construction period of a project is greatly shortened.
Foundation pit excavation supporting method suitable for watercourse with shallow water and sludge
Provided is a foundation pit excavation supporting method suitable for a watercourse with shallow water and sludge. A construction platform is constructed in the shallow water of the watercourse twice in a filling mode, a supporting structure for foundation pit excavation is established on the construction platform, foundation pit excavation and bearing platform construction are carried out for the second time under the protection of the supporting structure, the foundation pit supporting structure is dismantled after bearing platform construction is finished, and a supporting process can be completed. In combination with specific geological and hydrological characteristics of the watercourse with the shallow water and the sludge, a steel cofferdam and the whole bearing platform and foundation pit excavation supporting structure are constructed by means of common profile steel and a common excavation mechanism and matched with an earth cofferdam in the watercourse, so that under the premise that a bearing platform and foundation pit supporting effect is brought into play, and investment of project capital is reduced substantially. Through tests, compared with a steel sheet pile cofferdam constructed by means of 9m long Larsen steel sheet piles and a creeper truck with a vibration hammer and a mechanical arm, 84.1% of cost can be saved. Because the construction method is simplified, the construction period of a project is greatly shortened.
Foundation pit excavation supporting method suitable for watercourse with shallow water and sludge
GAO XIAOJUAN (author) / ZHAO RUI (author) / JIAO YUFENG (author) / LIANG BIN (author) / XU HONGYU (author) / ZHANG DUYUAN (author) / NIE NINGBO (author)
2015-07-22
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
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