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A platform for research: civil engineering, architecture and urbanism
Foundation construction technology based on karst cave area
The invention provides a foundation construction process based on a karst cave area, and belongs to the technical field of foundation construction, and the foundation construction process comprises the following steps: S1, carrying out advanced drilling operation on a construction foundation range, determining a karst cave structure in the construction foundation range, and determining positions of a soil cave and a shallow karst cave; s2, modeling a construction foundation by combining a karst cave structure, a soil cave and a shallow karst cave structure, and calculating to obtain structural data of a raft and a pipe pile in the used pile valve foundation; s3, grouting construction is conducted on the soil cave and the shallow karst cave; s4, a pipe pile is constructed at the construction foundation, and a static load test is conducted; and S5, a raft is constructed, and the raft is connected with the pipe piles. According to the method, the influence of the karst cave on foundation construction is reduced in the mode of combining the raft and the pipe pile, the vertical bearing capacity of the pipe pile is guaranteed to be met through modeling calculation, and the mode of combining the raft and the pipe pile has the advantages of being small in grouting amount, low in cost and short in construction time.
本发明提供的一种基于溶洞地区的地基施工工艺，属于地基施工技术领域，包括：S1：对施工地基范围进行超前钻作业，确定施工地基范围内的溶洞结构，并确定土洞和浅层溶洞位置；S2：结合溶洞结构、土洞和浅层溶洞结构对施工地基进行建模，计算得出所使用的桩阀基础中筏板和管桩的结构数据；S3：对土洞和浅层溶洞进行注浆施工；S4：在施工地基处施工管桩，并进行静载试验；S5：施工筏板，并使筏板与管桩相连接。本发明通过筏板和管桩结合的方式减少溶洞对地基施工的影响，通过建模计算保证管桩的竖向承载力满足，筏板和管桩结合的方式具有注浆量少，成本低，施工时间较短的优点。
Foundation construction technology based on karst cave area
The invention provides a foundation construction process based on a karst cave area, and belongs to the technical field of foundation construction, and the foundation construction process comprises the following steps: S1, carrying out advanced drilling operation on a construction foundation range, determining a karst cave structure in the construction foundation range, and determining positions of a soil cave and a shallow karst cave; s2, modeling a construction foundation by combining a karst cave structure, a soil cave and a shallow karst cave structure, and calculating to obtain structural data of a raft and a pipe pile in the used pile valve foundation; s3, grouting construction is conducted on the soil cave and the shallow karst cave; s4, a pipe pile is constructed at the construction foundation, and a static load test is conducted; and S5, a raft is constructed, and the raft is connected with the pipe piles. According to the method, the influence of the karst cave on foundation construction is reduced in the mode of combining the raft and the pipe pile, the vertical bearing capacity of the pipe pile is guaranteed to be met through modeling calculation, and the mode of combining the raft and the pipe pile has the advantages of being small in grouting amount, low in cost and short in construction time.
本发明提供的一种基于溶洞地区的地基施工工艺，属于地基施工技术领域，包括：S1：对施工地基范围进行超前钻作业，确定施工地基范围内的溶洞结构，并确定土洞和浅层溶洞位置；S2：结合溶洞结构、土洞和浅层溶洞结构对施工地基进行建模，计算得出所使用的桩阀基础中筏板和管桩的结构数据；S3：对土洞和浅层溶洞进行注浆施工；S4：在施工地基处施工管桩，并进行静载试验；S5：施工筏板，并使筏板与管桩相连接。本发明通过筏板和管桩结合的方式减少溶洞对地基施工的影响，通过建模计算保证管桩的竖向承载力满足，筏板和管桩结合的方式具有注浆量少，成本低，施工时间较短的优点。
Foundation construction technology based on karst cave area
一种基于溶洞地区的地基施工工艺
ZHANG XINXIN (author) / FU AO (author) / LIU GUOHUI (author) / WEI HOUBO (author) / ZHANG HAO (author) / LI JUN (author) / LU SHANSHAN (author) / LIAO YONG (author)
2023-08-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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