CN217053444U - Construction structure for assembling steel tower crane pile foundation - Google Patents

Abstract

The utility model discloses an assembly steel tower crane pile foundation construction structure, which uses four steel pipe piles driven below a basement bottom plate for bearing, adopts steel pipe column supports with the same specification and coaxial line as the steel bar piles, the steel pipe column is provided with a plurality of horizontal supports and vertical inclined supports from the top to the top surface of the basement bottom plate, and the axis of the steel pipe pile (column) corresponds to the position of a tower crane footing; the steel pipe pile and the steel pipe column are connected and fixed by adopting a connecting pipe, a pin shaft and a clamping ring; a plugging steel plate is arranged on the inner side of the upper part of the steel pipe column, and a plurality of ground anchors are welded on the side wall; the tower crane footing is inserted into the steel pipe column, and is formed by pouring expanded concrete to be jointly loaded with the steel pipe column (pillar); after the tower crane is used and completed, after the support on the steel pipe column is removed, the steel pipe column and the steel pipe pile are pulled out, and the steel pipe pile and the steel pipe column are detached for waiting for next use by detaching the clamping ring and the pin shaft. The structure has low construction cost and does not influence the layout of the underground structure.

Description

Construction structure for assembling steel tower crane pile foundation

Technical Field

The utility model relates to an assembled component especially relates to assembly steel tower crane pile foundation construction structures.

Background

With the increasing shortage of building land, the development of building space to high altitude and underground becomes a necessary trend. The periphery of each newly-built high-rise building and the underground space among the buildings are gradually occupied by the underground engineering such as large-area underground garages, underground civil air guards, equipment rooms and the like which are connected into a whole, the pressure of the ground space is obviously relieved due to the appearance of the building form, and the building function and the living environment of people are improved, so that the building form has obvious effects.

In the traditional building engineering design, the main construction process of the tower crane foundation comprises the steps of firstly constructing a pile foundation according to the field condition, then excavating a foundation pit, excavating a foundation cushion layer after the foundation pit is excavated to the designed foundation bottom elevation, cutting a pile, constructing a waterproof and waterproof protective layer, finally installing a template and a steel bar of a bearing platform, and pouring concrete in time, wherein the construction progress is slow, and the required labor cost, the material cost and the use cost of construction machinery are relatively high.

The chinese patent with application number 201420151415.4 discloses "a no-bearing-platform lattice type tower crane foundation device that can pass through basement", the utility model discloses a steel lattice column, the upper ends of four steel lattice columns are respectively connected with four corner posts of tower crane tower body standard section, the lower ends of four steel lattice columns pass through the basement and are anchored in four reinforced concrete bored concrete piles below the basement bottom plate; lacing bars are arranged between the adjacent steel lattice columns, and a horizontal cross brace is arranged between the two diagonally arranged steel lattice columns. This utility model discloses on the nonstandard festival that four steel lattice columns formed directly transmits reinforced concrete pile foundation, must construct earlier pile foundation, be not suitable for the nervous tower crane erection construction of time limit for a project, also do not benefit to the form of current assembly ization construction, tower crane stake and steel lattice column homogeneous inferior input, resources are wasted, there is adverse effect to the underground environment in the reinforced concrete bored concrete pile that buries underground, is unfavorable for environmental protection and resource reuse.

Disclosure of Invention

An object of the utility model is to overcome prior art not enough, provide a construction cost low, do not influence underground structure overall arrangement, convenient and fast, safe and reliable, the environmental protection can have enough to meet the need, the high assembly steel tower crane pile foundation construction structure of work efficiency of construction.

The utility model discloses an assembly steel tower crane pile foundation construction structure, including prefabricated support, multisection steel-pipe pile and four steel-pipe columns, the support include the steel pipe circle of arranging respectively in four angular points of rectangular structure, adjacent two the steel pipe circle between through the horizontal brace that sets up along the horizontal direction fixed the linking, be connected with cross diagonal brace between the steel pipe circle of the diagonal position department of rectangular structure that four steel pipe circles enclose; the support is placed on the ground according to a set position, a plurality of sections of steel pipe piles are driven into soil below each steel pipe ring, the top of the uppermost section of steel pipe pile is 90-100 cm higher than the top surface of the steel pipe ring, a reinforcing pipe is annularly sleeved and welded on the outer wall of the top of the uppermost section of steel pipe pile, and first preformed holes are formed in the radial direction of the reinforcing pipe and the uppermost section of steel pipe pile; the lower part inner wall of each steel-pipe column and the upper portion outer wall of connecting the steel pipe all around the welding link to each other connecting the steel pipe stretch out the lower part of steel-pipe column and radially open along the steel-pipe column and have the second preformed hole: each steel-pipe column is connected with the topmost steel-pipe pile located at a steel-pipe ring position, and the connected structure is as follows: the first preformed hole and the axis of the second preformed hole coincide, the steel pin shaft penetrates through the first preformed hole and the second preformed hole, a steel pin clamping ring is installed in a fixed groove formed in the steel pin shaft, the steel pin shaft is fixed, and the fixed groove is arranged along the annular shaft direction of the steel pin shaft penetrating through the first preformed hole and the second preformed hole.

This structure is applicable to the engineering place and is limited, and the basis is the operating mode of deep basal pit, can accelerate the construction progress, under the prerequisite of guaranteeing safe and reliable, according to site operation condition comprehensive consideration analysis, and convenient principle is torn open in the ann of make full use of tower crane, adopts the tower crane basis can cyclic utilization assembly steel tower crane pile basis.

Drawings

FIG. 1 is a schematic plan view of the construction in the process of pressing a steel pipe pile (column) after the support adopted by the construction structure for assembling the steel tower crane pile foundation of the utility model is positioned;

FIG. 2 is a schematic elevation view of a steel pipe column, a horizontal support and an inclined support adopted in the construction structure for assembling the steel tower crane pile foundation of the utility model;

FIG. 3 is a sectional elevation view of the steel pipe column and the steel pipe pile adopted in the construction structure for assembling the steel tower crane pile foundation of the utility model, which are fixedly connected by the connecting steel pipe and the steel pin shaft;

fig. 4 is a schematic diagram of a steel pin shaft in the construction structure for assembling the steel tower crane pile foundation of the utility model;

FIG. 5 is a plan view of a steel pin clamp ring fixed on a steel pin shaft adopted in the construction structure for assembling the steel tower crane pile foundation of the utility model;

fig. 6 is a cross-sectional view of a steel pin snap ring secured to a steel pin shaft in the configuration shown in fig. 5.

Detailed Description

The invention will be described in detail with reference to the following drawings and specific embodiments:

the utility model discloses an assembly steel tower crane pile foundation construction structure, including prefabricated support, multisection steel-pipe pile and four steel-pipe columns 7, the support include respectively arrange the steel pipe circle 1 at four angular points of rectangular structure, adjacent two the steel pipe circle 1 between through the horizontal brace 3 that sets up along the horizontal direction fixedly connected, be connected with cross diagonal brace 5 between the steel pipe circle 1 of diagonal position department of the rectangular structure that four steel pipe circles 1 enclose; the support is placed on the ground according to a set position, a plurality of sections of steel pipe piles are driven into soil below each steel pipe ring 1, the top of the uppermost section of steel pipe pile is 90cm-100cm higher than the top surface of the steel pipe ring 1, a reinforcing pipe 11 is welded on the outer wall of the top of the uppermost section of steel pipe pile in a ring sleeving mode, and first reserved holes are formed in the radial direction of the reinforcing pipe 11 and the uppermost section of steel pipe pile.

Preferably, a conical pile tip is arranged at the root of the lowest section of the steel pipe pile. The inner diameter of each steel pipe ring 1 can be 2cm larger than the outer diameter of the steel pipe pile.

The lower part inner wall of each steel-pipe column 7 and the upper portion outer wall of connecting steel pipe 8 are connected with each other by circumferential welding, connecting steel pipe 8 stretch out the lower part of steel-pipe column 7 and along the radial of steel-pipe column 7 open and have the second preformed hole: each steel-pipe column 7 is connected with the uppermost steel-pipe pile at the position of one steel-pipe ring 1, and the connected structure is as follows: the first preformed hole and the second preformed hole coincide in axis, and steel round pin axle 9 passes first preformed hole and second preformed hole to install steel round pin snap ring 14 in the fixed recess 13 that sets up on steel round pin axle 9, will steel round pin axle 9 fixed. The fixing groove 13 is arranged along the ring axis direction of the steel pin shaft 9 which penetrates through the first preformed hole and the second preformed hole.

Preferably, a tapered enlarged end 12 with a diameter larger than that of the steel pin body is arranged on one side of the steel pin, and the shape of the first preformed hole in the reinforcing pipe 11 is matched with the shape of the contact part of the tapered enlarged end 12. The fixing groove 13 is formed in the outer wall of the other side of the steel pin shaft, the bottom wall of the fixing groove 13 is arc-shaped, the side wall close to the outer end of the steel pin snap ring is a plane which is radially arranged along the steel pin snap ring, the steel pin snap ring 14 is annular with an opening and is sleeved on the fixing groove 13 in a sleeved mode, and the shape of the contact surface of the steel pin snap ring 14 and the fixing groove 13 is matched with that of the fixing groove 13, so that the upper steel pipe column and the lower steel pipe column cannot slip due to pile pressing, pile pulling and tower crane normal use;

preferably, the two ends of the steel pin shaft are exposed outside the reinforcing pipe 11 after the fixing is finished, and the length of the reinforcing pipe is not more than 5mm, so that the steel pin shaft 9 can be installed and fixed, and the resistance of the steel pipe pile when the steel pipe pile is pressed into or pulled out of the ground is reduced.

The construction method adopting the structure comprises the following steps:

placing a support on the ground according to a set position, then sequentially driving multiple sections of steel pipe piles into the ground along a steel pipe ring 1 until the top of the uppermost section of steel pipe pile is 90-100 cm higher than the top surface of the steel pipe ring 1, annularly sleeving and welding a reinforcing pipe 11 on the outer wall of the top of the uppermost section of steel pipe pile, and forming first preformed holes along the radial directions of the reinforcing pipe 11 and the uppermost section of steel pipe pile;

step two, lowering the steel pipe column 7:

and step three, adjusting the steel pipe column 7 to enable the axes of the first preformed hole and the second preformed hole to coincide, enabling the steel pin shaft 9 to penetrate through the first preformed hole and the second preformed hole, installing a steel pin snap ring 14 in a fixing groove 13 formed in the steel pin shaft 9, and fixing the steel pin shaft 9. The fixing groove 13 is arranged along the ring axis direction of the steel pin shaft 9 which penetrates through the first preformed hole and the second preformed hole.

Driving the steel pipe column 7 downwards into the ground along the steel pipe ring 1 to enable the distance between the top of the steel pipe column 7 and the top of the steel pipe ring 1 to be 20-25 cm;

fifthly, repeating the first step and the fourth step, and driving the steel pipe pile 10 and the steel pipe column 7 along each steel pipe ring 1; meanwhile, the top of each steel pipe column 7 is ensured to be at the same horizontal position;

sixthly, excavating a foundation around the support until the position of a designed elevation below the ground, and then arranging a plurality of connecting horizontal supports 4 and inclined supports 6 between every two adjacent steel pipe columns 7; welding a closed steel plate on the inner upper part of each steel pipe column respectively, and welding ground bolts on the inner wall of the steel pipe column above the closed steel plate;

and seventhly, inserting a plurality of steel bars into the upper part of each steel pipe column 7 respectively and connecting the bottom of each steel bar with the closed steel plate in a welding manner.

And step eight, inserting four ground feet of the tower crane section into the steel pipe column respectively, and welding and fixing the four ground feet with the top of the steel pipe column and the steel bars by adopting angle steels.

And step nine, pouring C40 micro-expansion fiber concrete in the steel pipe column, and installing a tower crane when the strength of the concrete reaches 80%. After the tower crane is installed and used up, the tower crane main structure above four ground feet of the tower crane section is firstly dismantled, then the support on the steel pipe column is dismantled, the four steel pipe columns and the steel pipe column are sequentially pulled out by adopting a pile pulling machine, and the tower crane waits for next use after being cleaned and maintained.

Claims (4)

1. Assembly steel tower crane pile foundation construction structures, its characterized in that: the steel pipe column support comprises a prefabricated support, a plurality of sections of steel pipe piles and four steel pipe columns, wherein the support comprises steel pipe rings which are respectively arranged at four corners of a rectangular structure, two adjacent steel pipe rings are fixedly connected through a horizontal support arranged along the horizontal direction, and a cross diagonal support is connected between the steel pipe rings at the diagonal positions of the rectangular structure formed by the four steel pipe rings; the support is placed on the ground according to a set position, a plurality of sections of steel pipe piles are driven into soil below each steel pipe ring, the top of the uppermost section of steel pipe pile is 90-100 cm higher than the top surface of the steel pipe ring, a reinforcing pipe is annularly sleeved and welded on the outer wall of the top of the uppermost section of steel pipe pile, and first preformed holes are formed in the radial direction of the reinforcing pipe and the uppermost section of steel pipe pile; the lower part inner wall of each steel-pipe column and the upper portion outer wall of connecting steel pipe all around weld link to each other connecting steel pipe stretch out the lower part of steel-pipe column and open along the radial of steel-pipe column and have the second preformed hole: each steel-pipe column is connected with the topmost steel-pipe pile located at a steel-pipe ring position, and the connected structure is as follows: the first preformed hole and the axis of the second preformed hole coincide, the steel pin shaft penetrates through the first preformed hole and the second preformed hole, a steel pin clamping ring is installed in a fixed groove formed in the steel pin shaft, the steel pin shaft is fixed, and the fixed groove is arranged along the annular shaft direction of the steel pin shaft penetrating through the first preformed hole and the second preformed hole.

2. The assembly steel tower crane pile foundation construction structure of claim 1, characterized in that: steel round pin axle one side be provided with the toper enlarged end that the diameter is greater than steel round pin axle main part, the shape of the first preformed hole on the reinforced pipe coincide with toper enlarged end contact site shape, fixed recess open steel round pin axle opposite side outer wall on, the diapire of fixed recess for the arc and be close to the plane of lateral wall for following steel round pin snap ring radial setting of steel round pin snap ring outer end, steel round pin snap ring for having open-ended annular and ring cover on fixed recess, the shape of steel round pin snap ring and fixed recess contact surface coincide with fixed recess shape.

3. The construction structure of the assembly steel tower crane pile foundation according to claim 1 or 2, characterized in that: and after the steel pin shaft is fixed, the two ends of the steel pin shaft are exposed out of the outer side of the reinforcing pipe and are not more than 5 mm.

4. The assembly steel tower crane pile foundation construction structure of claim 3, characterized in that: the root of the lowest section of the steel pipe pile is provided with a conical pile tip, and the inner diameter of each steel pipe ring is 2cm larger than the outer diameter of the steel pipe pile.

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