Construction method of rock stratum flow state solidified soil rear steel sheet pile: Fid-Bau Portal

Construction method of rock stratum flow state solidified soil rear steel sheet pile

ZHANG LINGSHUAI / ZOU SUBO / ZHANG JINGJIANG / GUO QIUHONG / LIU YU

The invention provides a construction method of a rock stratum flow state solidified soil rear steel sheet pile, and relates to the technical field of steel sheet pile construction. The method comprises the following steps: preparing a rock layer preformed hole; preparing flow-state solidified soil by utilizing muck generated by pre-forming holes in the rock layer, and pouring the flow-state solidified soil into the pre-formed holes; a steel sheet pile is sunk into the preformed hole, so that the space between the steel sheet pile and the inner wall of the preformed hole is filled with the flow-state solidified soil; waiting for solidification and hardening of the flow-state solidified soil. After the fluid-state solidified soil is solidified and hardened, the fluid-state solidified soil and the steel sheet piles are combined to form a composite supporting structure, and a structure similar to reinforced concrete can be formed to jointly resist lateral soil pressure of a foundation pit, so that the combination of the fluid-state solidified soil and the steel sheet piles has higher bending resistance and shear resistance; no matter in a non-rock stratum or a rock stratum, the stability of the foundation pit can be improved.

本发明提供了一种岩石地层流态固化土后置钢板桩的施工方法，涉及钢板桩施工技术领域。该方法包括制备岩石层预成孔；利用岩石层预成孔产生的渣土制备流态固化土，并将所述流态固化土浇灌于所述预成孔内；将钢板桩沉入所述预成孔，以使所述流态固化土填充于所述钢板桩和所述预成孔的内壁之间；等待所述流态固化土凝固硬化。在流态固化土凝固硬化后，流态固化土与钢板桩相结合组成为复合支护结构，可以形成类似于钢筋混凝土的结构以共同抵抗基坑侧向土压力，这样，流态固化土和钢板桩相结合具有较高的抗弯和抗剪能力，无论是在非岩石地层还是岩石地层，都能够提高基坑的稳定性。

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