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Inclined assembled double-row steel sheet pile foundation pit supporting structure and construction method thereof

A technology for foundation pit support and steel sheet piles, which is used in foundation structure engineering, sheet pile walls, excavation, etc., can solve the problems of low lateral stiffness and large deformation, and achieve high overall horizontal stiffness, high overall stiffness, and low cost. Effect

Inactive Publication Date: 2015-09-16
JIANGSU DONGHENAN GEOTECHNICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively small lateral stiffness of the steel sheet pile, the deformation is large

Method used

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  • Inclined assembled double-row steel sheet pile foundation pit supporting structure and construction method thereof
  • Inclined assembled double-row steel sheet pile foundation pit supporting structure and construction method thereof
  • Inclined assembled double-row steel sheet pile foundation pit supporting structure and construction method thereof

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0038] Specific implementation method one: (the front row of piles is inclined, and the rear row of piles is vertical)

[0039] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0040] as shown in the picture Figure 1-3 and Figure 4-5 As shown, an obliquely assembled double-row steel pile foundation pit support structure includes a front row of steel sheet piles 1, a rear row of steel sheet piles 2 and an intermediate connecting reinforcement member 3.

[0041] The front row of steel sheet piles 1 is composed of ordinary U-shaped steel sheet piles 11 and steel sheet piles 12 , and the rear row of steel sheet piles 2 is composed of ordinary U-shaped steel sheet piles 21 and steel sheet piles 22 . The reinforcing member 3 is an I-shaped steel, and the width of the bottom of the I-shaped steel is smaller than the width of the top in the longitudinal direction.

[0042] The construction method based on the...

specific Embodiment approach 2

[0052] Specific implementation method two: (the front row of piles is vertical, and the rear row of piles is inclined)

[0053] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0054] like Figure 1-3 and Figure 6-7As shown, an obliquely assembled double-row steel pile foundation pit support structure includes a front row of steel sheet piles 1, a rear row of steel sheet piles 2 and an intermediate connecting reinforcement member 3.

[0055] The front row of steel sheet piles 1 is composed of ordinary U-shaped steel sheet piles 11 and steel sheet piles 12 , and the rear row of steel sheet piles 2 is composed of ordinary U-shaped steel sheet piles 21 and steel sheet piles 22 . The reinforcing member 3 is an I-shaped steel, and the width of the top of the I-shaped steel is greater than the width of the bottom in the longitudinal direction.

[0056] The construction method based on the inclined assembly t...

specific Embodiment approach 3

[0066] Specific implementation method three: (the front row of piles is inclined, and the rear row of piles is inclined)

[0067] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0068] like Figure 1-Figure 3 and Figure 8-9 As shown, an obliquely assembled double-row steel pile foundation pit support structure includes a front row of steel sheet piles 1, a rear row of steel sheet piles 2 and an intermediate connecting reinforcement member 3.

[0069] The front row of steel sheet piles 1 is composed of ordinary U-shaped steel sheet piles 11 and steel sheet piles 12 , and the rear row of steel sheet piles 2 is composed of ordinary U-shaped steel sheet piles 21 and steel sheet piles 22 . The reinforcing member 3 is I-shaped steel, and the width of the I-shaped steel in the longitudinal direction is equal.

[0070] The construction method based on the inclined assembly type double-row steel sheet pile fou...

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Abstract

The invention relates to an inclined assembled double-row steel sheet pile foundation pit supporting structure and a construction method thereof. The inclined assembled double-row steel sheet pile foundation pit supporting structure comprises front row steel sheet piles, rear row steel sheet piles and stiffening members connecting the front and rear row steel sheet piles. The construction method comprises the steps of firstly selecting geometric parameters of the front and rear row steel sheet piles, then, constructing the front row steel sheet piles, installing the stiffening members, finally constructing the rear row steel sheet piles and the like. According to the inclined assembled double-row steel sheet pile foundation pit supporting structure, industrial production of the prefabricated steel sheet piles can be achieved, the production speed is high, the pile body quality is reliable, construction is rapid, and the inclined assembled double-row steel sheet pile foundation pit supporting structure can be recycled, and is environmentally friendly and low in manufacturing cost. The supporting structure can retain earth and stop water at the same time, the water deformation resistance is enhanced through the inclined steel sheet piles, the front and rear row steel sheet piles can form the space statically indeterminate structure through the stiffening members, the overall rigidity is large, internal force and deformation are reduced, and the internal force of the supporting structure can be automatically adjusted under the effect of complex and variable external loads, so that the supporting structure adapts to projects for deeper foundation pits and complex load conditions which are difficultly predicted frequently.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to an inclined assembly type double-row steel pile foundation pit support structure and a construction method thereof. Background technique [0002] The double-row pile support structure means that two rows of parallel piles are set in the foundation soil, the pile bodies of the front and rear rows are arranged in a rectangular or plum blossom shape, ring beams are set on the top of the two rows of piles, and connected by connecting beams, along the parallel direction of the pit wall , forming a gate-shaped space structure, which is a space statically indeterminate structure with high overall rigidity, which can effectively limit the deformation of the foundation pit. Under the action of complex and changeable external loads, it can automatically adjust the internal force of the support structure itself to adapt to complex And often unpredictable loading conditions....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/04E02D5/12
Inventor 李仁民王建兰
Owner JIANGSU DONGHENAN GEOTECHNICAL TECH CO LTD
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