CN217810967U - Supporting structure adopting prefabricated section steel concrete square pile as stand column - Google Patents

Abstract

The utility model discloses an adopt bearing structure of prefabricated shaped steel concrete square pile for stand, including upper portion stand and lower part stand, the upper portion stand includes prefabricated shaped steel concrete square pile stand, the lower part stand includes prefabricated concrete square pile stand, prefabricated shaped steel concrete square pile stand with the joint of prefabricated concrete square pile stand adopts welding or mechanical connection, the upper portion stand is provided with first reinforced concrete support, second way reinforced concrete support and bottom plate on the transverse section under from the top. The beneficial effects of the utility model are that, adopt prefabricated component (precast concrete square pile stand stake and prefabricated shaped steel concrete square pile stand) as stand stake and stand, construction speed is fast, need not the maintenance, and the quality is easily controlled, and the environmental protection, the relative tradition bored concrete pile of cost + shaped steel stand are lower.

Description

Supporting structure adopting prefabricated section steel concrete square pile as stand column

Technical Field

The utility model relates to a foundation ditch engineering field, especially an adopt prefabricated shaped steel concrete square pile to make bearing structure of stand.

Background

The foundation pit enclosure structure with the internal support comprises a vertical enclosure pile, a horizontal support and an upright post, and when the horizontal support is a steel support, H-shaped steel can be generally adopted as the upright post and the upright post pile due to smaller self weight; when the horizontal support is a reinforced concrete support, the vertical column generally adopts an angle steel lattice column or a steel pipe column due to large dead weight, and the vertical column pile generally adopts a cast-in-situ bored pile. The cast-in-situ bored pile has the disadvantages of high cost, slow construction speed, difficult quality control, pollution of slurry to the environment and certain maintenance time. Generally, if the engineering pile is a cast-in-place pile, the upright post pile generally considers that part of the engineering pile is used as the upright post pile so as to save cost, and if the engineering pile is a precast pile, the upright post pile cannot be used, and the cast-in-place pile needs to be added as the upright post pile.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, a supporting structure adopting the prefabricated section steel concrete square pile to make the stand is designed.

The technical scheme of the utility model be, an adopt prefabricated shaped steel concrete square pile to make bearing structure of stand, including upper portion stand and lower part stand stake, the upper portion stand includes prefabricated shaped steel concrete square pile stand, the lower part stand stake includes prefabricated concrete square pile stand stake, prefabricated shaped steel concrete square pile stand with the joint of prefabricated concrete square pile stand stake adopts welding or mechanical connection, the upper portion stand is provided with first reinforced concrete support, second way reinforced concrete support and bottom plate on the transverse section under from the top.

As a further explanation of the present invention, the prefabricated section steel concrete square pile top is located 10 to 20cm below the first reinforced concrete supporting top surface, the section steel in the prefabricated section steel concrete square pile column in the first reinforced concrete supporting beam range is fixed by fully welding the short steel bars and anchoring the supporting beam.

As a further explanation of the present invention, the second reinforced concrete support is formed by wrapping four angle steels at four corners of the prefabricated steel reinforced concrete square pile at the position of the reinforced concrete support beam and connecting the angle steels together through steel plates.

As right the utility model discloses a further explanation, prefabricated shaped steel concrete square pile stand is fixed through a short reinforcement and outsourcing angle steel or steel sheet full weld anchor income supporting beam at second way reinforced concrete supporting beam central line and upper and lower position.

As right the utility model discloses a further explanation, the beam reinforcement that the second way reinforced concrete supported takes the beam muscle to walk around the connected mode of prefabricated shaped steel concrete square pile stand, or the beam muscle is bent to rise and is connected with outsourcing angle steel or steel sheet welded connected mode.

As right the utility model discloses a further explanation, four steel sheets of prefabricated shaped steel concrete square pile stand in the latter half package welding of bottom plate position, the steel sheet with the clearance packing of prefabricated shaped steel concrete square pile has water proof coating, and the steel sheet welds square stagnant water steel sheet all around.

As right the utility model discloses a further explanation, prefabricated shaped steel concrete square pile stand is broken at the first half concrete of bottom plate position and is exposed shaped steel to the welding has the stagnant water steel sheet in the shaped steel intermediate position.

The construction method has the advantages that 1, prefabricated parts (the prefabricated concrete square pile and the prefabricated section steel concrete square pile) are adopted as the upright pile and the upright column, construction speed is high, maintenance is not needed, quality is easy to control, environmental protection is achieved, and manufacturing cost is lower than that of a traditional cast-in-place pile and a section steel upright column.

2. In the engineering that the engineering pile is a precast pile, part of the engineering precast pile can be used as the upright pile, and the application range of the engineering pile which is also used as the upright pile is expanded.

3. The characteristic of high compressive strength of the concrete member is fully utilized.

4. The connection between the prefabricated steel reinforced concrete square pile at the upper part and each support is simple and firm.

5. The waterproof structure of the prefabricated steel reinforced concrete square pile upright post and the bottom plate is simple and reliable.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 isbase:Sub>A schematic cross-sectional view taken at the location A-A in FIG. 1;

fig. 3 is a schematic cross-sectional view at the position B-B in fig. 1.

In the figure, 1, prefabricating a steel reinforced concrete square pile upright post; 2. prefabricating a concrete square pile upright column pile; 3. a first reinforced concrete support; 4. a second reinforced concrete support; 5. a base plate; 6. anchoring the steel bar; 7. wrapping angle steel; 8. wrapping a steel plate; 9. a water stop steel plate; 10. section steel; 11. and (3) concrete.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, as shown in fig. 1 to 3, a supporting structure using prefabricated steel reinforced concrete square piles as columns, and the corresponding process will be described in detail with reference to the structure.

The main structure comprises an upper upright column and a lower upright column, the upper upright column comprises a prefabricated steel reinforced concrete square pile upright column, the lower upright column comprises a prefabricated concrete square pile upright column, the prefabricated steel reinforced concrete square pile upright column is connected with a joint of the prefabricated concrete square pile upright column through welding or machinery, and a first reinforced concrete support, a second reinforced concrete support and a bottom plate are arranged on the transverse section of the upper upright column from top to bottom.

Firstly, calculating and determining side length and buried depth of a prefabricated square pile and model size design parameters of section steel 10 in a prefabricated section steel concrete square pile upright column 1 according to the distance between foundation pit upright columns, the self weight of supports, the live loads of the supports and a trestle and the distance between each support;

secondly, if the properties of the soil layer below the pit bottom are better, the top elevation of the lower prefabricated concrete square pile upright post pile 2 is positioned at the position 3m below the elevation of the pit bottom, and if the properties of the soil layer below the pit bottom are poorer, the top elevation of the lower prefabricated concrete square pile upright post pile 2 is positioned in the soil layer with better properties and is not higher than 3m below the elevation of the pit bottom, correspondingly, the height of the upper prefabricated section steel concrete square pile upright post bottom is consistent with the height of the lower prefabricated concrete square pile upright post pile 2, and the height of the upper prefabricated section steel concrete square pile upright post 1 is positioned 10-20 cm below the top surface of the first supporting plate;

thirdly, welding or mechanically connecting joints of the upper prefabricated section steel concrete square pile upright post 1 and the lower prefabricated concrete square pile upright post 2 together;

fourthly, when a first supporting bottom surface is excavated, breaking the pile head of the prefabricated section steel concrete square pile upright post 1, retaining the section steel 10, fully welding the section steel 10 with the supporting center line and the upper and lower parts through short steel bars, anchoring the section steel 10 into a supporting beam, and pouring to form a first support;

fifthly, when each support bottom surface at the lower part of the foundation pit is excavated, four corners of a prefabricated steel reinforced concrete square pile upright post 1 are wrapped with angle steel 7 and are welded firmly through steel plates, the support central line and the upper and lower parts of the prefabricated steel reinforced concrete square pile upright post are fully welded with the steel plates through short steel bars and are anchored into the support beams, and the support beam steel bars at the position of the square pile adopt a connection mode that beam bars bypass the square pile or are directly bent and welded with the steel plates, and each support beam is poured;

sixthly, after the foundation pit is excavated to the bottom of the pit, the periphery of the prefabricated steel reinforced concrete square pile upright post 1 is wrapped and welded by four steel plates at the lower half part of the bottom plate 5, gaps between the steel plates and the prefabricated square pile are filled with epoxy resin, and then the steel plates are wrapped and welded in the horizontal direction outside the four steel plates to seal the steel plates;

seventhly, constructing the bottom plate 5, namely arranging a construction joint at the joint of the prefabricated steel reinforced concrete square pile upright post 1 and the bottom plate 5, adopting secondary pouring, and pouring the lower bottom plate 5 firstly;

eighthly, breaking and cutting the concrete 11 and the steel bars of the prefabricated section steel concrete square pile upright post 1 to the position of the steel-clad top surface of the bottom plate 5 after the support is removed, and reserving the upright post section steel 10 below the top surface of the bottom plate 5;

ninth, welding a square water stop steel plate 9 on the periphery of the upright post section steel 10 of the bottom plate 5;

and step ten, connecting the top steel bars of the bottom plates 5 reserved in the upright post areas, and pouring concrete 11.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical staff probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims (7)

1. The utility model provides an adopt bearing structure of prefabricated shaped steel concrete square pile as stand, includes upper portion stand and lower part stand, its characterized in that, the upper portion stand includes prefabricated shaped steel concrete square pile stand (1), the lower part stand includes prefabricated concrete square pile stand (2), prefabricated shaped steel concrete square pile stand (1) with the joint of prefabricated concrete square pile stand (2) adopts welding or mechanical connection, the horizontal cross-section of upper portion stand from the top down is provided with first reinforced concrete support (3), second reinforced concrete support (4) and bottom plate (5).

2. The supporting structure adopting the prefabricated section steel concrete square pile as the stand column according to claim 1, wherein the top of the prefabricated section steel concrete square pile stand column (1) is 10-20 cm below the top surface of the first reinforced concrete support (3), and the section steel (10) in the prefabricated section steel concrete square pile stand column (1) in the range of the first reinforced concrete support (3) beam is fixed by fully welding short steel bars and anchoring into a supporting beam.

3. The supporting structure using the prefabricated steel reinforced concrete square pile as the stand column as claimed in claim 1, wherein the second reinforced concrete support (4) is formed by wrapping four angle steels at four corners of the prefabricated steel reinforced concrete square pile stand column (1) at the position of the reinforced concrete supporting beam and connecting the four angle steels together through steel plates.

4. The supporting structure using the prefabricated section steel concrete square pile as the upright post according to claim 1, wherein the prefabricated section steel concrete square pile upright post (1) is fixed on the central line and the upper and lower positions of the second reinforced concrete support (4) beam by fully welding short steel bars and outer-coated angle steel (7) or steel plates into a supporting beam.

5. The supporting structure using the prefabricated section steel concrete square pile as the stand column according to claim 1, wherein the beam steel bars of the second reinforced concrete support (4) are connected in a way that the beam steel bars bypass the prefabricated section steel concrete square pile stand column (1) or in a way that the beam steel bars are bent and welded with the outer wrapping angle steel (7) or the steel plate.

6. The supporting structure using the prefabricated section steel concrete square pile as the upright post according to claim 1, wherein the prefabricated section steel concrete square pile upright post (1) is wrapped and welded with four steel plates at the lower half part of the position of the bottom plate (5), a gap between the steel plates and the prefabricated section steel concrete square pile upright post (1) is filled with waterproof paint, and a square water stop steel plate (9) is welded around the steel plates.

7. The supporting structure using the prefabricated section steel concrete square pile as the upright post as claimed in claim 1, wherein the prefabricated section steel concrete square pile upright post (1) is characterized in that the upper half part of the concrete (11) at the position of the bottom plate (5) breaks to expose the section steel (10), and the water stop steel plate (9) is welded at the middle position of the section steel (10).

Images