Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hard clay layer steel pipe pile cofferdam construction method
The invention relates to the technical field of bridge construction, and provides a hard clay layer steel pipe pile cofferdam construction method which comprises the following steps: S1, inserting and driving steel pipe piles at a designed position to form a cofferdam; s2, according to the pH value of the hard clay layer, the compressive strength needed by the supporting layer below during construction of the bridge bearing platform and the shortest time for maintaining the compressive strength of the supporting layer, the proportion of the sodium silicate solution and the oxalic acid solution injected into the supporting layer and the baume degree of the sodium silicate solution are measured, the supporting layer is a hard clay layer from the lower part of the bearing platform to the bottom of the steel pipe pile; and S3, an oxalic acid solution and a sodium silicate solution are injected into the supporting layer in sequence at the preset position in the cofferdam according to the proportion. According to the method, the hard clay layer has high bearing potential, then the sodium silicate solution and the oxalic acid solution with the preset concentration and proportion are injected, then the compressive strength of the hard clay layer is improved, and the hard clay layer can have enough bearing capacity within a period of time and can bear the bearing platform construction load.
本发明涉及桥梁施工技术领域，提供了一种硬质黏土层钢管桩围堰施工方法，包括如下步骤：S1、在设计位置处插打钢管桩形成围堰；S2、根据硬质黏土层的pH值、桥梁承台施工时对下方支撑层所需的抗压强度、以及支撑层维持该抗压强度的最短时间，测定向支撑层内注入硅酸钠溶液、草酸溶液的配比和硅酸钠溶液的波美度，其中，支撑层为承台下方至钢管桩桩底范围内的硬质黏土层；S3、在围堰中的预设位置处按照所述配比先后向支撑层中注入草酸溶液、硅酸钠溶液。该方法利用硬质黏土层本身具备较高的承载潜力，再注入预设浓度及配比的硅酸钠溶液和草酸溶液，进而提高其抗压强度，可以使其在一段时间内具备足够的承载力，能够承受承台施工荷载。
Hard clay layer steel pipe pile cofferdam construction method
The invention relates to the technical field of bridge construction, and provides a hard clay layer steel pipe pile cofferdam construction method which comprises the following steps: S1, inserting and driving steel pipe piles at a designed position to form a cofferdam; s2, according to the pH value of the hard clay layer, the compressive strength needed by the supporting layer below during construction of the bridge bearing platform and the shortest time for maintaining the compressive strength of the supporting layer, the proportion of the sodium silicate solution and the oxalic acid solution injected into the supporting layer and the baume degree of the sodium silicate solution are measured, the supporting layer is a hard clay layer from the lower part of the bearing platform to the bottom of the steel pipe pile; and S3, an oxalic acid solution and a sodium silicate solution are injected into the supporting layer in sequence at the preset position in the cofferdam according to the proportion. According to the method, the hard clay layer has high bearing potential, then the sodium silicate solution and the oxalic acid solution with the preset concentration and proportion are injected, then the compressive strength of the hard clay layer is improved, and the hard clay layer can have enough bearing capacity within a period of time and can bear the bearing platform construction load.
本发明涉及桥梁施工技术领域，提供了一种硬质黏土层钢管桩围堰施工方法，包括如下步骤：S1、在设计位置处插打钢管桩形成围堰；S2、根据硬质黏土层的pH值、桥梁承台施工时对下方支撑层所需的抗压强度、以及支撑层维持该抗压强度的最短时间，测定向支撑层内注入硅酸钠溶液、草酸溶液的配比和硅酸钠溶液的波美度，其中，支撑层为承台下方至钢管桩桩底范围内的硬质黏土层；S3、在围堰中的预设位置处按照所述配比先后向支撑层中注入草酸溶液、硅酸钠溶液。该方法利用硬质黏土层本身具备较高的承载潜力，再注入预设浓度及配比的硅酸钠溶液和草酸溶液，进而提高其抗压强度，可以使其在一段时间内具备足够的承载力，能够承受承台施工荷载。
Hard clay layer steel pipe pile cofferdam construction method
硬质黏土层钢管桩围堰施工方法
WU GUOLIANG (Autor:in) / TRAN HAI (Autor:in) / DU MINGQU (Autor:in) / WANG LIYUAN (Autor:in) / LIU WENCONG (Autor:in) / LIN LIZHI (Autor:in) / TANG HONG (Autor:in) / XUE XIAOLONG (Autor:in) / QIN XIANGXING (Autor:in) / HAN YU (Autor:in)
26.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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