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A platform for research: civil engineering, architecture and urbanism
Deep and thick silt geological cofferdam bottom sealing construction method
The invention discloses a bottom sealing construction method for a cofferdam in the deep and thick silt geology, and solves the problem that the bottom sealing bearing capacity of a deep and thick silt layer is insufficient through successful application of the bottom sealing construction method for the cofferdam in the deep and thick silt geology. According to a previous method, an original foundation surface serves as a bottom elevation reference surface of bottom sealing concrete, the anti-floating and anti-sinking requirements of the concrete are met by increasing the binding power of the concrete, a steel sheet pile cofferdam and a steel pile casing, and the problems that if large-area concrete is adopted, the concrete is increased, and the safety performance of subsequent construction is low are solved. On the original basis, it is ensured that no sludge is deposited on the base face of the bottom sealing base through further sludge suction and dredging, and strength reduction caused by mixing of bottom sealing concrete and deposited sludge is avoided; in addition, a new base structure is formed through replacement filling, the bearing capacity of the base face of the bottom sealing base is improved, the bearing safety of follow-up bearing platform construction is improved, material losses are reduced on the whole, and the economic cost is greatly saved.
本发明公开一种深厚淤泥地质围堰封底施工方法，深厚淤泥地质围堰封底施工方法的成功运用，解决了深厚淤泥层封底承载力不足；根据过往方法均以原地基面作为封底混凝土底标高基准面，通过增加混凝土与钢板桩围堰、钢护筒粘结力达到混凝土抗浮、抗沉要求，若大面积采用则导致混凝土增加，后续施工安全性能较低的问题，本发明以在原基础上通过进一步吸泥清淤确保封底基底面无淤泥沉积，避免封底混凝土与沉积淤泥混合降低强度；此外还通过换填形成新的基底结构，增加封底基底面承载力且增加后续承台施工承载安全，总体减少了材料损耗，大幅度节约经济成本。
Deep and thick silt geological cofferdam bottom sealing construction method
The invention discloses a bottom sealing construction method for a cofferdam in the deep and thick silt geology, and solves the problem that the bottom sealing bearing capacity of a deep and thick silt layer is insufficient through successful application of the bottom sealing construction method for the cofferdam in the deep and thick silt geology. According to a previous method, an original foundation surface serves as a bottom elevation reference surface of bottom sealing concrete, the anti-floating and anti-sinking requirements of the concrete are met by increasing the binding power of the concrete, a steel sheet pile cofferdam and a steel pile casing, and the problems that if large-area concrete is adopted, the concrete is increased, and the safety performance of subsequent construction is low are solved. On the original basis, it is ensured that no sludge is deposited on the base face of the bottom sealing base through further sludge suction and dredging, and strength reduction caused by mixing of bottom sealing concrete and deposited sludge is avoided; in addition, a new base structure is formed through replacement filling, the bearing capacity of the base face of the bottom sealing base is improved, the bearing safety of follow-up bearing platform construction is improved, material losses are reduced on the whole, and the economic cost is greatly saved.
本发明公开一种深厚淤泥地质围堰封底施工方法，深厚淤泥地质围堰封底施工方法的成功运用，解决了深厚淤泥层封底承载力不足；根据过往方法均以原地基面作为封底混凝土底标高基准面，通过增加混凝土与钢板桩围堰、钢护筒粘结力达到混凝土抗浮、抗沉要求，若大面积采用则导致混凝土增加，后续施工安全性能较低的问题，本发明以在原基础上通过进一步吸泥清淤确保封底基底面无淤泥沉积，避免封底混凝土与沉积淤泥混合降低强度；此外还通过换填形成新的基底结构，增加封底基底面承载力且增加后续承台施工承载安全，总体减少了材料损耗，大幅度节约经济成本。
Deep and thick silt geological cofferdam bottom sealing construction method
一种深厚淤泥地质围堰封底施工方法
YANG HAITAO (author) / CHEN DELIANG (author) / LIN YANG (author) / XIONG PENGBO (author) / ZHANG KUN (author) / FAN BIN (author) / CHEN XIN (author) / SEO GA-RAM (author) / YU WUBO (author) / GUI FENGYANG (author)
2023-11-10
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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