Combined lattice steel frame spray anchoring supporting method and combined lattice steel frame spray anchoring supporting structure

A combination and steel frame technology, which is applied in infrastructure engineering, excavation, construction, etc., can solve the problems of small excavation area, complex foundation pit environment, and inability to use foundation pit support structures, so as to achieve great construction flexibility , It is convenient for quality control and occupies a small working area

Inactive Publication Date: 2013-12-25
CHINA FIRST METALLURGICAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a combined lattice steel structure suitable for the construction of deep foundation pits with narrow working surfaces, aiming at the shortco

Method used

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  • Combined lattice steel frame spray anchoring supporting method and combined lattice steel frame spray anchoring supporting structure
  • Combined lattice steel frame spray anchoring supporting method and combined lattice steel frame spray anchoring supporting structure
  • Combined lattice steel frame spray anchoring supporting method and combined lattice steel frame spray anchoring supporting structure

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] refer to Figure 1~Figure 3 As shown, the combined lattice steel frame spray anchor foundation pit support structure of the present invention includes reinforced concrete crown beam 8, L-shaped connecting bars 11, lattice steel frame, connecting bars 6, horizontal inner support 2, bottom cover Shaped steel concealed support 5, advanced small conduit 4 with grouting holes, steel mesh sheet 10 and shotcrete, the reinforced concrete crown beam 8 is arranged on the outer edge of the top of the foundation pit; one end of the L-shaped connecting bar 11 is connected to the The concrete crown beam 8 is consolidated, and the other end of the L-shaped connecting bar 11 faces toward the bottom of the foundation pit along the side wall of the foundation pit; Two adjacent sections of horizontal H-shaped steel 3 are connected as a whole through the connecti...

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Abstract

The invention provides a combined lattice steel frame spray anchoring supporting method and a combined lattice steel frame spray anchoring supporting structure. The structure comprises a reinforced concrete top beam, an L-shaped connecting rib, lattice steel frames, a connecting rib, a horizontal inner supporter, a backing type steel hidden supporter, an advanced small conduit, a steel bar net sheet and sprayed concrete, wherein the advanced small conduit is provided with grouting holes, the lattice steel frames are formed by a plurality of sections of transverse H section steel and a plurality of sections of longitudinal section steel surrounding purlins, the horizontal inner supporter is erected between the lattice steel frames arranged at two sides of a foundation pit, and the backing type steel hidden supporter is arranged at the foundation bottom of the foundation pit. The method and the structure have the beneficial effects that the lattice steel frames are processed section by section on the ground and are combined and mounted in the pit, the operation construction is convenient, and the quality control is convenient; the support structure is excavated and supported one house rack by one house rack from top to bottom, the construction does not need large-scale mechanical equipment and can be completed through manual work, and the construction cost is low; the occupied operation are is very small, and the method and the structure are mainly suitable for the small-foundation-pit-excavation-area foundation pit support which has the square, striped and round plane shape and is convenient for inner supporter arrangement.

Description

technical field [0001] The invention relates to the field of foundation pit support, in particular to a combined lattice steel frame spray-anchor support method and its support structure, which are suitable for complex foundation pit environments and small excavation areas. Background technique [0002] With the continuous construction of urban infrastructure, the surrounding environment of the foundation pit is becoming more and more complex, which puts forward higher requirements for the design and construction of the foundation pit engineering, not only to ensure the safety of the foundation pit support structure, but also to ensure the safety of the foundation pit Safe use of surrounding buildings (structures), underground pipe network and roads. The construction of traditional foundation pit support structures generally requires large-scale machinery and equipment, which cannot be completed manually, and the construction cost is high. For foundation pits with complex su...

Claims

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Application Information

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IPC IPC(8): E02D17/04
Inventor 姜平黎明中何小林张小兵
Owner CHINA FIRST METALLURGICAL GROUP
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