CN209760254U - Vertical enclosure wall structure - Google Patents

Abstract

The utility model discloses a vertical enclosure wall structure, indulge the cement soil pile of horizontal mutual interlock including the multirow, stake core steel pipe, guan liang, multirow cement soil pile passes through pile bolck guan liang and forms its stake core steel pipe anchor atress structure, and the cement soil pile of mutual interlock forms and seals the stagnant water curtain. The pile body of the utility model adopts a steel pipe inserted in cement soil with certain strength, and forms a vertical structure with bending resistance and shearing resistance through the combination of a plurality of rows of stiffening piles; the concrete pile and the core inserting steel pipe can be arranged in a horizontal direction to form a supporting structure system with a horizontal support, an anchor rod or a combination thereof according to the depth of a foundation pit and the stratum condition, and the number and the row distance of the cement pile and the core inserting steel pipe can be increased according to the stress requirement so as to improve the bending rigidity of the vertical enclosure wall structure; the cement soil piles and the end parts of the steel pipes enter a stable stratum under the basement, so that the deep sliding resistance strength of the supporting structure can be greatly improved; the multiple rows of cement soil piles are lapped in the transverse and longitudinal directions to form a reliable waterproof curtain, so that the seepage of underground water can be effectively controlled; the vertical enclosure wall structure is a vertical enclosure wall structure which can support and stop water.

Description

Vertical enclosure wall structure

Technical Field

The utility model relates to a civil engineering field especially relates to deep basal pit supporting engineering.

Background

With the rapid growth of national economy and the rapid development of urban construction in China, high-rise and super high-rise buildings are continuously emerging, various large-scale projects such as subway stations, municipal squares, ultra-deep basements, railway passenger stations and the like are increased day by day, the underground space development scale is larger and larger, the development of foundation pit supporting theory and practice technology is greatly promoted, meanwhile, the foundation pit supporting technology also meets unprecedented difficulties, and particularly the development of new processes and new technologies cannot keep up with the requirement of deep foundation pit supporting.

The rapid development of the construction industry directly brings about the shortage of urban land, the deep foundation pit excavation line is close to the surrounding building, the construction space of the vertical supporting structure of the foundation pit is small, under the condition of high ground water level, the traditional bored pile forming process is adopted, because the construction machinery is huge, the construction is difficult or even impossible, and the manual hole digging pile is easy to collapse due to excavation and soil taking, so that the great potential safety hazard exists, and the supporting structure which can meet the condition that the vertical supporting structure of the foundation pit is close to the surrounding building under the condition of high water level is not seen at present.

In order to solve the technical problems, the invention provides a novel vertical enclosure wall structure, and aims to solve the technical problem that the vertical support structure of the urban deep foundation pit cannot be constructed close to the surrounding building by adopting a conventional support structure under the condition of high water level.

Disclosure of Invention

The utility model overcomes not enough among the prior art provides a can satisfy under the high water level condition vertical supporting construction of deep basal pit closely adjacent to peripheral building a vertical enclosure structure of building.

For solving the technical problem, the utility model discloses a realize through following technical scheme.

A vertical enclosure wall structure comprises cement-soil piles 1, pile core steel pipes 2 and reinforced concrete crown beams 3, wherein the cement-soil piles 1 are continuously arranged and mutually occluded and lapped, the pile core steel pipes 2 are arranged in the cement-soil piles 1, and the reinforced concrete crown beams 3 are arranged at the top ends of the pile core steel pipes 2.

The distance between the cement soil piles 1 is 300-500 mm, and each cement soil pile is meshed and lapped 150-250 mm.

The cement soil piles 1 are at least 2 rows, the row spacing is 300-500 mm, and each row is mutually meshed and lapped for 150-250 mm.

The pile core steel pipe 2 is vertically inserted into the center of the cement-soil pile 1 along the axis.

The top beam 3 is arranged at the top end of the pile core steel pipe 2 along the axis direction, the left side and the right side extend by 200 mm-500 mm, and the top end of the pile core steel pipe 2 is anchored into the top beam 3.

The utility model has the advantages that: the utility model is a vertical enclosure structure which can support and stop water, and is suitable for deep foundation pit or side slope with excavation depth not exceeding 10 m; the pile body is formed into a vertical structure with bending resistance and shearing resistance by inserting steel pipes into cement soil with certain strength and combining a plurality of rows of stiffening piles; the concrete pile and the core inserting steel pipe can be arranged in a horizontal direction to form a supporting structure system with a horizontal support, an anchor rod or a combination thereof according to the depth of a foundation pit and the stratum condition, and the number and the row distance of the cement pile and the core inserting steel pipe can be increased according to the stress requirement so as to improve the bending rigidity of the vertical enclosure wall structure; the cement soil piles and the end parts of the steel pipes enter a stable stratum under the basement, so that the deep sliding resistance strength of the supporting structure can be greatly improved; the multiple rows of cement soil piles are lapped in the transverse and longitudinal directions to form a reliable waterproof curtain, so that the seepage of underground water can be effectively controlled; for the condition that the construction operation surface is severely limited, the single-pipe high-pressure jet grouting pile can be adopted, the operation surface required by construction is only 500-750 mm, the single-pipe high-pressure jet grouting pile can be closely attached to the existing building for construction, and the technical problem that the construction is difficult or even impossible by using conventional large-scale equipment is solved.

Drawings

Fig. 1 is a schematic view of the present invention.

Parts, part names and corresponding labels shown in the figures: cement soil pile 1, steel pipe 2, crown beam 3.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the vertical enclosure wall structure of the present embodiment includes soil cement piles 1, pile core steel pipes 2, and crown beams 3 arranged in parallel.

The cement soil piles 1 are two rows of high-pressure jet grouting piles, the diameter of each pile is 500mm, the distance between the piles is 300mm, the row distance is 400mm, and each high-pressure jet grouting pile is mutually occluded and lapped to form a waterproof curtain.

The steel pipe 2 is a welded pipe with the diameter of 89mm and is vertically inserted into the center of the cement soil pile 1 along the axis.

The crown beam 3 is a reinforced concrete structure with the width of 1000mm and the height of 600mm, and the left side and the right side extend by 300mm along each steel pipe 2.

The top end of the pile core steel pipe 2 is anchored into the crown beam 3 and is connected with the crown beam 3 into a whole.

The utility model has the following steps.

Calculating and analyzing the pile diameter, the length and the lap joint length of the cement soil pile 1 according to the groundwater seepage requirement, and simultaneously selecting construction mechanical equipment; according to site geological conditions and the requirements of safety and stability calculation and analysis of a foundation pit, determining the specification and model, horizontal spacing, row number, row spacing and length of the steel pipes 2; and analyzing and calculating the width, the height and the reinforcing bars of the crown beam 3 according to the structural stress requirement.

And measuring and setting out, constructing the cement soil pile 1, and forming a continuous waterproof curtain after adopting a lap joint mode.

And inserting the steel pipe 2 before the cement soil pile is completely solidified after the construction is finished.

And after the construction of the steel pipe 2 is finished and the cement soil maintenance is finished, excavating earthwork to the elevation of the bottom of the crown beam 3, and simultaneously constructing the crown beam 3 and maintaining for 7 days.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a vertical enclosure wall structure which characterized in that: the concrete-filled pile comprises cement-soil piles (1), pile core steel pipes (2) and reinforced concrete crown beams (3), wherein the cement-soil piles (1) are continuously arranged and mutually occluded and lapped, the pile core steel pipes (2) are arranged in the cement-soil piles (1), and the reinforced concrete crown beams (3) are arranged at the top ends of the pile core steel pipes (2).

2. The vertical enclosure structure of claim 1 wherein: the distance between the cement soil piles (1) is 300-500 mm, and each cement soil pile is meshed and lapped 150-250 mm.

3. The vertical enclosure structure of claim 1 wherein: the cement soil piles (1) are at least 2 rows, the row spacing is 300-500 mm, and each row is mutually meshed and lapped for 150-250 mm.

4. The vertical enclosure structure of claim 1 wherein: the pile core steel pipe (2) is vertically inserted into the center of the cement soil pile (1) along the axis.

5. The vertical enclosure structure of claim 1 wherein: the top beam (3) is arranged at the top end of the pile core steel pipe (2) along the axis direction, the extension of the left side and the right side is 200 mm-500 mm, and the top end of the pile core steel pipe (2) is anchored into the top beam (3).