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A platform for research: civil engineering, architecture and urbanism
Overwater bridge composite foundation and construction method thereof
The invention discloses an overwater bridge composite foundation and a construction method thereof, and relates to the technical field of bridge foundations. The method comprises the steps that S1, a plurality of steel pipe piles are driven into a riverbed at intervals, a prefabricated annular structural part with the small upper section area and the large lower section area is put down, the upper end of the prefabricated annular structural part is higher than the water surface, and the lower end of the prefabricated annular structural part is placed on the riverbed and surrounds all the steel pipe piles; and S2, the prefabricated annular structural part is filled with concrete, and the prefabricated annular structural part and all the steel pipe piles are connected to form an integral structure. The prefabricated annular structural part with the small upper section area and the large lower section area is adopted, the weight of the prefabricated annular structural part is low, the prefabricated annular structural part can be conveniently put down for construction, the area of the bottom end of the structure falling on the riverbed is large enough, the prefabricated annular structural part and the steel pipe piles inserted into the riverbed jointly bear the upper load, and the bearing capacity of the whole composite foundation is good. A water retaining steel cofferdam does not need to be arranged in the construction process, steel cofferdam overwater construction with large difficulty is omitted, the construction difficulty is greatly reduced, the construction speed is increased, and the construction cost is reduced.
本发明公开了一种水上桥梁复合基础及其施工方法，涉及桥梁基础技术领域，该方法包括：步骤S1，在河床上间隔打入多根钢管桩，下放上段截面积小、下段截面积大的预制环形结构件，使预制环形结构件上端高于水面、下端放置于河床上并包围所有钢管桩；步骤S2，在预制环形结构件内填充混凝土，将预制环形结构件与所有钢管桩连接形成整体结构。本发明采用上段截面积小、下段截面积大的预制环形结构件，自身重量较轻，便于下放施工，落在河床上的结构底端面积足够大，与插入河床的多根钢管桩共同承载上部载荷，整个复合基础承载能力好。施工过程不需要设置挡水钢围堰，省去难度较大的钢围堰水上施工，施工难度大幅降低，施工速度加快，施工成本降低。
Overwater bridge composite foundation and construction method thereof
The invention discloses an overwater bridge composite foundation and a construction method thereof, and relates to the technical field of bridge foundations. The method comprises the steps that S1, a plurality of steel pipe piles are driven into a riverbed at intervals, a prefabricated annular structural part with the small upper section area and the large lower section area is put down, the upper end of the prefabricated annular structural part is higher than the water surface, and the lower end of the prefabricated annular structural part is placed on the riverbed and surrounds all the steel pipe piles; and S2, the prefabricated annular structural part is filled with concrete, and the prefabricated annular structural part and all the steel pipe piles are connected to form an integral structure. The prefabricated annular structural part with the small upper section area and the large lower section area is adopted, the weight of the prefabricated annular structural part is low, the prefabricated annular structural part can be conveniently put down for construction, the area of the bottom end of the structure falling on the riverbed is large enough, the prefabricated annular structural part and the steel pipe piles inserted into the riverbed jointly bear the upper load, and the bearing capacity of the whole composite foundation is good. A water retaining steel cofferdam does not need to be arranged in the construction process, steel cofferdam overwater construction with large difficulty is omitted, the construction difficulty is greatly reduced, the construction speed is increased, and the construction cost is reduced.
本发明公开了一种水上桥梁复合基础及其施工方法，涉及桥梁基础技术领域，该方法包括：步骤S1，在河床上间隔打入多根钢管桩，下放上段截面积小、下段截面积大的预制环形结构件，使预制环形结构件上端高于水面、下端放置于河床上并包围所有钢管桩；步骤S2，在预制环形结构件内填充混凝土，将预制环形结构件与所有钢管桩连接形成整体结构。本发明采用上段截面积小、下段截面积大的预制环形结构件，自身重量较轻，便于下放施工，落在河床上的结构底端面积足够大，与插入河床的多根钢管桩共同承载上部载荷，整个复合基础承载能力好。施工过程不需要设置挡水钢围堰，省去难度较大的钢围堰水上施工，施工难度大幅降低，施工速度加快，施工成本降低。
Overwater bridge composite foundation and construction method thereof
一种水上桥梁复合基础及其施工方法
ZHOU YAN (author) / LI HAIHUA (author) / ZHANG GENG (author) / LIAN YIKAI (author) / ZHU CHENBIN (author) / ZHU SHIMENG (author) / SHU HAIHUA (author) / LI JUNTANG (author) / LUO BING (author) / ZHA DAOHONG (author)
2021-06-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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