Slope protection pile pouring and cable bolting construction method for deep foundation pit

Abstract

The invention discloses a slope protection pile pouring and cable bolting construction method for a deep foundation pit. The method comprises the following steps of: 1, making preparations before construction; 2, pouring a slope protection pile, namely measuring, paying off, molding and constructing the poured slope protection pile, punching holes on the poured slope protection pile, binding and hoisting a steel reinforcement cage for molding the slope protection pile, pouring concrete into the poured slope protection pile and constructing a crown beam at the top end of the pile; and 3, excavating a foundation in a layered form and constructing anchor ropes on different rows, namely excavating a first-layer foundation, arranging a first row of anchor ropes, arranging a steel waist rail, arranging anchor heads of the anchor ropes, tensioning the anchor ropes and finishing excavating processes of different layers of foundations and arranging different rows of anchor ropes. The method has a reasonable design, simple construction steps, low investment cost, large support depth and good using effect, and solves the problems of complicated construction steps, high construction cost, inconvenience in control, easy damage to surrounding pipelines, roads, buildings and the like, large construction space and the like existing in the conventional double-row pile supporting method can be solved.

Description

technical field [0001] The invention belongs to the technical field of deep foundation pit support construction, and in particular relates to a deep foundation pit perfusion slope protection pile plus anchor cable support construction method. Background technique [0002] With the rapid development of the construction industry, the construction of high-rise buildings and the utilization of underground space have stimulated the development of excavation and support technology for deep foundation pit engineering. Most of the newly built high-rise buildings have deep foundations and multi-storey basements, and the buried depth of the foundations has reached more than 15m, and there are many pipelines, roads and buildings near the foundation pits. In actual construction, in order to ensure the quality of the project and the safety of personnel and property, and to ensure that adjacent pipelines, roads and buildings are not damaged, higher requirements are put forward for the con...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a deep foundation pit perfusion slope protection pile plus anchor cable support construction method for the above-mentioned deficiencies in the prior art, which has reasonable design, simple construction steps, low investment cost and large support depth , The use effect is good, and it can solve the complex construction steps, high construction cost, inconvenient construction process control, easy to cause damage to the adjacent pipelines, roads and buildings on the surrounding side, and large construction space in the existing double-row pile support method. Practical problems

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