Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prestressed PC construction method combined steel pipe pile foundation pit supporting structure and construction method thereof
The invention discloses a prestressed PC construction method combined steel pipe pile foundation pit supporting structure and a construction method thereof, relates to the technical field of geotechnical engineering foundation pit supporting, and aims at the problems that an existing PC construction method combined steel pipe pile supporting structure needs to be combined with a supporting system to be used, the construction cost is increased, and the construction period is prolonged. The structure comprises at least one row of steel pipe piles which are arranged in parallel at intervals; fixed end anchorage devices are arranged at the bottoms of the inner walls of the row of steel pipe piles close to the excavation surface of a foundation pit; every two adjacent steel pipe piles are connected through at least one Larsen steel sheet pile in a buckled mode; capping beams are arranged at the tops of each row of steel pipe piles; and one end of a prestressed steel strand is anchored to the fixed end anchorage device, and the other end is anchored to the coping beam. According to the construction method, the adjacent steel pipe piles are connected through the Larsen steel sheet piles in a buckled mode, the capping beams are constructed at the tops of the steel pipe piles, sleeves are pre-buried, the prestressed steel strands are tensioned, the top ends of the steel pipe piles are anchored to the soil facing side of the capping beam, after construction of the underground structure is completed, the steel pipe piles and the Larsen steel sheet piles are pulled out, and gaps are filled through grouting.
本发明的预应力PC工法组合钢管桩基坑支护结构及其施工方法，涉及岩土工程基坑支护技术领域。针对现有PC工法组合钢管桩支护结构需组合支撑系统使用，不但提高了工程造价，而且延长了工期的问题。它包括：平行且间隔设置的至少一排钢管桩，靠近基坑开挖面的一排钢管桩的内壁底部均设有固定端锚具；相邻两根钢管桩通过至少一根拉森钢板桩锁扣连接；压顶梁设置于每排钢管桩顶部；预应力钢绞线一端锚固于固定端锚具，其另一端锚固于压顶梁。施工方法：相邻钢管桩之间通过拉森钢板桩锁扣连接，在钢管桩顶部施工压顶梁并预埋套管，张拉预应力钢绞线，并将其顶端锚固于压顶梁的迎土侧，地下结构施工完成后，拔出钢管桩和拉森钢板桩，注浆回填空隙。
Prestressed PC construction method combined steel pipe pile foundation pit supporting structure and construction method thereof
The invention discloses a prestressed PC construction method combined steel pipe pile foundation pit supporting structure and a construction method thereof, relates to the technical field of geotechnical engineering foundation pit supporting, and aims at the problems that an existing PC construction method combined steel pipe pile supporting structure needs to be combined with a supporting system to be used, the construction cost is increased, and the construction period is prolonged. The structure comprises at least one row of steel pipe piles which are arranged in parallel at intervals; fixed end anchorage devices are arranged at the bottoms of the inner walls of the row of steel pipe piles close to the excavation surface of a foundation pit; every two adjacent steel pipe piles are connected through at least one Larsen steel sheet pile in a buckled mode; capping beams are arranged at the tops of each row of steel pipe piles; and one end of a prestressed steel strand is anchored to the fixed end anchorage device, and the other end is anchored to the coping beam. According to the construction method, the adjacent steel pipe piles are connected through the Larsen steel sheet piles in a buckled mode, the capping beams are constructed at the tops of the steel pipe piles, sleeves are pre-buried, the prestressed steel strands are tensioned, the top ends of the steel pipe piles are anchored to the soil facing side of the capping beam, after construction of the underground structure is completed, the steel pipe piles and the Larsen steel sheet piles are pulled out, and gaps are filled through grouting.
本发明的预应力PC工法组合钢管桩基坑支护结构及其施工方法，涉及岩土工程基坑支护技术领域。针对现有PC工法组合钢管桩支护结构需组合支撑系统使用，不但提高了工程造价，而且延长了工期的问题。它包括：平行且间隔设置的至少一排钢管桩，靠近基坑开挖面的一排钢管桩的内壁底部均设有固定端锚具；相邻两根钢管桩通过至少一根拉森钢板桩锁扣连接；压顶梁设置于每排钢管桩顶部；预应力钢绞线一端锚固于固定端锚具，其另一端锚固于压顶梁。施工方法：相邻钢管桩之间通过拉森钢板桩锁扣连接，在钢管桩顶部施工压顶梁并预埋套管，张拉预应力钢绞线，并将其顶端锚固于压顶梁的迎土侧，地下结构施工完成后，拔出钢管桩和拉森钢板桩，注浆回填空隙。
Prestressed PC construction method combined steel pipe pile foundation pit supporting structure and construction method thereof
预应力PC工法组合钢管桩基坑支护结构及其施工方法
YAN CHAO (Autor:in) / ZHONG ZHENG (Autor:in) / ZHANG ZHUTING (Autor:in) / LIN JIE (Autor:in) / SHI SUQING (Autor:in)
26.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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