Construction technology of cantilever piling and supporting structure combined with sloping
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A technology of support structure and construction technology, which can be applied in basic structure engineering, excavation, construction, etc., and can solve problems such as inability to slope
Active Publication Date: 2014-04-30
HUBEI CENT SOUTH EXPLORATION & FOUND ENG
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Limited by site conditions, most basement edges are very close to the red line of the land use, and cannot be graded according to the natural slope rate
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[0023] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0024] Please refer to Figure 1 to Figure 6 , the embodiment of the present invention combines the construction technology of the cantilever row pile support structure of grading, and its technological process is:
[0025] Step a), after measuring and placing the 6 pile positions of the mixing pile, drill down and spray the grout, then lift the spray grout to stir, re-drill and spray the grout to stir, repeat the lifting of the spray grout to mix, and the drilling rig will move after the pile is completed;
[0026] Step b), after measuring and laying the 4 pile positions of the supporting piles, the drilling rig equipment is in place and aligned with the center of the drilling hole to start the hole, hoist the casing into the hole, re-measure the hole position, bury the casing, and use mechanical re-measurement Put the hole posi...
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Abstract
The invention relates to a construction technical of a cantilever piling and supporting structure combined with sloping. Different from others, the construction technology includes: a), subjecting the pile location of mixing piles to surveying and lining, drilling downwards guniting, promoting mixing of the guniting, drilling downwards once again for mixing of the guniting, repeatedly promoting mixing of the guniting, and displacing a drilling machine; b), subjecting the pile location of supporting piles to surveying and lining, opening a hole in the supporting pile, lifting up a pile casing into the hole, retesting the hole location, well burying the pile casing, mechanically surveying and lining the hole location, forming the hole, placing a reinforcement cage into the pile hole, pouring concrete upwards from the hole bottom, and allowing the elevation of the pile top reach designed elevation of the pile top; c), performing slope excavation, paving steel bar meshes on a slope surface, and spraying concrete on the slope top and the slope surface; d), sorting out pile heads of the supporting piles, setting aside supporting pile steel bars to be anchored into top beams, erecting frameworks and pouring the concrete on the supporting piles to manufacture the top beams and contacting beams, performing stratified excavation on earthwork, and constructing support among the piles. The supporting structure high in integrity is formed, construction is facilitated, and construction speed is high.
Description
technical field [0001] The invention relates to a construction technology of a cantilever row pile support structure combined with slope grading. Background technique [0002] With the development of urban underground space, many domestic cities have begun to restrict the use of soil anchors (cables) outside the red line of foundation pits. Limited by the site conditions, most of the basement sidelines are very close to the red line of the land use, and cannot be graded according to the natural slope rate. For foundation pits with a basement, the excavation depth is mostly 4 to 10 meters, and most of the support forms use internal support structures. When this support internal support structure is used, due to the shallow excavation depth, the internal support structure The settings of the earthwork excavation and construction schedule are greatly affected. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the pr...
Claims
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