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Bearing platform cofferdam applied to deep and thick sludge interlayer condition and construction technology of bearing platform cofferdam
The invention discloses a bearing platform cofferdam applied to a deep and thick sludge interlayer condition, which comprises a steel sheet pile cofferdam consisting of steel sheet piles, and bearing platform piles, a supporting system and high-pressure jet grouting piles which are arranged in the steel sheet pile cofferdam, and further comprises a concrete sealing bottom, the high-pressure jet grouting piles are arranged at the bottom in the steel sheet pile cofferdam to form a full-section reinforcing layer, and the concrete sealing bottom is arranged in the steel sheet pile cofferdam. The bottoms of the high-pressure jet grouting piles and the bottoms of the steel sheet piles are inserted into a middle interlayer with sludge, the tops of the high-pressure jet grouting piles are higher than the top of the middle interlayer, and the full-section concrete sealing bottom is arranged on the reinforcing layer. And the concrete sealing bottom has a certain thickness, so that the anti-floating performance after the reinforcing layer is combined with the concrete sealing bottom meets the requirement. According to the method, even if the high-pressure jet grouting piles have leakage points, it can be guaranteed that the problems of bottom gushing and the like are difficult to occur, and meanwhile the requirements for improving the anti-floating performance, reliability and construction safety of the cofferdam are met.
本发明公开了一种应用于深厚淤泥夹层条件下的承台围堰，包括钢板桩组成的钢板桩围堰以及设于钢板桩围堰内的承台桩、支撑系统和高压旋喷桩，还包括混凝土封底，所述钢板桩围堰内底部设置高压旋喷桩形成全断面的所述加固层，所述高压旋喷桩和所述钢板桩二者的底部均插入具有淤泥的中间夹层中，所述高压旋喷桩的顶部高于所述中间夹层的顶部，所述加固层上面设置全断面的所述混凝土封底，所述混凝土封底具有一定厚度令所述加固层与所述混凝土封底结合后的抗浮性能满足要求。本发明即使高压旋喷桩有漏点，也能保证难以出现底部突涌等问题，并同时兼顾提升围堰抗浮性能、可靠性和施工安全性的要求。
Bearing platform cofferdam applied to deep and thick sludge interlayer condition and construction technology of bearing platform cofferdam
The invention discloses a bearing platform cofferdam applied to a deep and thick sludge interlayer condition, which comprises a steel sheet pile cofferdam consisting of steel sheet piles, and bearing platform piles, a supporting system and high-pressure jet grouting piles which are arranged in the steel sheet pile cofferdam, and further comprises a concrete sealing bottom, the high-pressure jet grouting piles are arranged at the bottom in the steel sheet pile cofferdam to form a full-section reinforcing layer, and the concrete sealing bottom is arranged in the steel sheet pile cofferdam. The bottoms of the high-pressure jet grouting piles and the bottoms of the steel sheet piles are inserted into a middle interlayer with sludge, the tops of the high-pressure jet grouting piles are higher than the top of the middle interlayer, and the full-section concrete sealing bottom is arranged on the reinforcing layer. And the concrete sealing bottom has a certain thickness, so that the anti-floating performance after the reinforcing layer is combined with the concrete sealing bottom meets the requirement. According to the method, even if the high-pressure jet grouting piles have leakage points, it can be guaranteed that the problems of bottom gushing and the like are difficult to occur, and meanwhile the requirements for improving the anti-floating performance, reliability and construction safety of the cofferdam are met.
本发明公开了一种应用于深厚淤泥夹层条件下的承台围堰，包括钢板桩组成的钢板桩围堰以及设于钢板桩围堰内的承台桩、支撑系统和高压旋喷桩，还包括混凝土封底，所述钢板桩围堰内底部设置高压旋喷桩形成全断面的所述加固层，所述高压旋喷桩和所述钢板桩二者的底部均插入具有淤泥的中间夹层中，所述高压旋喷桩的顶部高于所述中间夹层的顶部，所述加固层上面设置全断面的所述混凝土封底，所述混凝土封底具有一定厚度令所述加固层与所述混凝土封底结合后的抗浮性能满足要求。本发明即使高压旋喷桩有漏点，也能保证难以出现底部突涌等问题，并同时兼顾提升围堰抗浮性能、可靠性和施工安全性的要求。
Bearing platform cofferdam applied to deep and thick sludge interlayer condition and construction technology of bearing platform cofferdam
一种应用于深厚淤泥夹层条件下的承台围堰及其施工工艺
ZHANG WENBIN (author) / XIE DEKUAN (author) / YANG KANG (author) / ZENG JIAN (author) / JIANG XIAOYANG (author) / LIU GE (author) / HE XIYING (author) / LI CHUANYOU (author) / SUN FAMING (author) / MA YUNDONG (author)
2022-09-16
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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