CN215290617U - Steel pipe structure column and ultra-long steel pipe structure column pile - Google Patents

Abstract

The utility model relates to a deep basal pit supporting's technical field discloses a steel tubular construction post and overlength steel tubular construction post stake. Wherein, this steel tubular construction post includes: the bottom of steel-pipe column has the fixed part, the lateral wall fixed ring of fixed part is equipped with a plurality of pegs, the lateral wall of fixed part still fixedly is equipped with many and leads smooth reinforcing bar, lead smooth reinforcing bar and follow the top to the bottom direction of steel-pipe column extend to arrange, many it encloses to locate a plurality of to lead smooth reinforcing bar the pegs, and many it extends to lead smooth reinforcing bar the tip of fixed part is formed with leads smooth portion, follows the top to the direction of bottom of steel-pipe column, the diameter of leading smooth portion reduces gradually. The utility model discloses steel tubular construction post that technical scheme provided, the smooth laying of the in-process of inserting under the steel-pipe column of being convenient for.

Description

Steel pipe structure column and ultra-long steel pipe structure column pile

Technical Field

The patent of the utility model relates to a deep basal pit supporting's technical field particularly, relates to a steel tubular construction post and overlength steel tubular construction post stake.

Background

With the rapid development of urban economy, urban population is growing rapidly, and urban traffic problems also become a hot spot of general attention. In order to relieve traffic pressure, the construction of subways in cities has been rapidly developed in recent years. The construction process of the cover-and-dig reverse construction method is mostly adopted in subway station engineering under the influence of factors such as surrounding environment restriction, geological conditions and the like, a steel pipe structure in the subway station structure is often used as a part of a permanent structure, the construction precision of the steel pipe column is required to be high according to specification and design, and the verticality deviation specification of the steel pipe column is required to be 1/1000 of the length of the steel pipe column and is not more than 15mm at most.

In the prior art, for ultra-deep and ultra-long steel pipe column piles, a construction process that a steel pipe column and a hole bottom reinforcement cage are butted at a hole opening and poured twice is usually adopted, but in the process of inserting an irrigation column downwards, due to the existence of the reinforcement cage in the pile hole, the steel pipe column is inconvenient to place and is extremely easy to clamp, so that the integral verticality requirement of the steel pipe column is not ensured conveniently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steel tubular construction post aims at solving prior art, and the steel-pipe column is inserting the inconvenient problem of laying of in-process under.

The utility model discloses a realize like this, a steel tubular construction post, include:

the bottom of steel-pipe column has the fixed part, the lateral wall fixed ring of fixed part is equipped with a plurality of pegs, the lateral wall of fixed part still fixedly is equipped with many and leads smooth reinforcing bar, lead smooth reinforcing bar and follow the top to the bottom direction of steel-pipe column extend to arrange, many it encloses to locate a plurality of to lead smooth reinforcing bar the pegs, and many it extends to lead smooth reinforcing bar the tip of fixed part is formed with leads smooth portion, follows the top to the direction of bottom of steel-pipe column, the diameter of leading smooth portion reduces gradually.

Optionally, the plurality of the studs form a plurality of stud groups, the plurality of stud groups are annularly arranged on the outer side wall of the fixing portion at intervals, each stud group is provided with a plurality of studs arranged at intervals, and the studs of each group are arranged along the top-to-bottom direction of the steel pipe column.

Optionally, each of the skid bars is welded to the ends of a plurality of the pegs of one of the peg groups.

Optionally, the multiple groups of the stud groups are annularly arranged on the outer side wall of the fixing part at equal intervals, and the number of the stud groups at least comprises three groups.

Optionally, the end of the fixing portion is provided with a lower insertion portion in the shape of a closed cone, the guide sliding portion is arranged around the lower insertion portion, and each guide sliding steel bar extends to and is welded to the periphery of the end of the lower insertion portion.

Optionally, the slide-guiding reinforcing steel bars are smooth round reinforcing steel bars.

Optionally, the top of the steel pipe column is used for connecting a tool column, the tool column is fixedly connected with the steel pipe column through a bolt, and the diameter of the tool column is larger than that of the steel pipe column.

Optionally, a horizontal plate is welded on the inner wall of the tool post, and an inclination angle sensor is fixedly arranged on the horizontal plate.

The utility model also provides an overlength steel tubular construction post stake, including the bored concrete pile with the steel tubular construction post. Wherein, steel tubular construction post includes:

the bottom of steel-pipe column has the fixed part, the lateral wall fixed ring of fixed part is equipped with a plurality of pegs, the lateral wall of fixed part still fixedly is equipped with many and leads smooth reinforcing bar, lead smooth reinforcing bar and follow the top to the bottom direction of steel-pipe column extend to arrange, many it encloses to locate a plurality of to lead smooth reinforcing bar the pegs, and many it extends to lead smooth reinforcing bar the tip of fixed part is formed with leads smooth portion, follows the top to the direction of bottom of steel-pipe column, the diameter of leading smooth portion reduces gradually.

The pile bottom of the cast-in-place pile is provided with a reinforcement cage which is annularly arranged at the bottom of the steel pipe column, the cast-in-place pile is filled with pile body concrete, and the steel pipe column is filled with in-pipe concrete.

Compared with the prior art, the utility model provides a steel tubular construction post leads the gliding portion that slides the reinforcing bar and form through many, can make things convenient for the steel-pipe column to lead and slide to steel reinforcement cage isotructure in, and owing to lead the smooth reinforcing bar and enclose and locate the peg, when the steel-pipe column is inserted downwards, the peg can not take place to cut with steel reinforcement cage isotructure and rub, is difficult for blocking, avoids taking place the card cage accident to the steel-pipe column is inserted downwards, and its peg can be used as reinforcing and bored concrete pile's being connected, compares in the structure of current steel-pipe column, the utility model provides a steel tubular construction post can not influence laying smoothly of steel-pipe column. The problem of among the prior art, the steel-pipe column is inconvenient to lay in the process of inserting down is solved.

Drawings

Fig. 1 is a schematic structural diagram of a steel pipe structural column provided by the present invention;

fig. 2 is the utility model provides an overlength steel tubular construction post structure sketch map.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1 and 2, the preferred embodiment of the present invention is provided.

In the embodiment of the utility model provides an in, this steel tubular construction post, include:

the steel-pipe column 11, the bottom of steel-pipe column 11 has fixed part 111, the lateral wall retaining ring of fixed part 111 is equipped with a plurality of pegs 113, the lateral wall of fixed part 111 still fixedly is equipped with many and leads smooth reinforcing bar 114, it extends to arrange along the top to the bottom direction of steel-pipe column 11 to lead smooth reinforcing bar 114, many lead smooth reinforcing bar 114 and enclose and locate a plurality of pegs 113, and many lead the tip that smooth reinforcing bar 114 extends to fixed part 111 and be formed with and lead smooth portion, along the top to the direction of bottom of steel-pipe column 11, the diameter of leading smooth portion reduces gradually.

The steel pipe column 11 is columnar, the interior of the steel pipe column is hollow, the studs 113 are generally vertically welded on the outer side wall of the steel pipe column 11, in addition, the slide-guiding reinforcing steel bars 114 are surrounded by the plurality of studs 113, that is, the round surfaces surrounded by the plurality of slide-guiding reinforcing steel bars 114 wrap the studs 113, so that the studs 113 cannot be scraped and rubbed with structures such as a reinforcement cage when the steel pipe column 11 is inserted downwards.

In this embodiment, lead the smooth portion of sliding formed through many steel-pipe column 114, can make things convenient for steel-pipe column 11 to lead and slide to in the steel reinforcement cage isotructure, and because lead smooth steel bar 114 and enclose and locate peg 113, when inserting steel-pipe column 11 down, peg 113 can not take place to cut with the structure such as steel reinforcement cage to rub, is difficult for blocking, avoids taking place to block the cage accident, so that steel-pipe column 11 inserts down, its peg 113 can be used as the connection of consolidating and bored concrete pile 12, compare in current steel-pipe column 11's structure, the utility model provides a steel-pipe column can not influence placing smoothly of steel-pipe column 11.

In addition, the guiding and sliding steel bars 114 at the periphery of the fixing part 111 are in arc-surface transition, that is, the fixing part is directly formed by bending one guiding and sliding steel bar 114, so that the rubbing is avoided, and the downward placing is convenient.

Referring to fig. 1, in an embodiment of the present invention, the plurality of studs 113 form a plurality of stud 113 sets, the plurality of stud 113 sets are disposed around the outer sidewall of the fixing portion 111 at intervals, each stud 113 set has a plurality of studs 113 disposed at intervals, and the studs 113 of each set are arranged along the top-to-bottom direction of the steel pipe column 11.

Therefore, when the steel pipe column 11 is embedded in the cast-in-place pile 12, the steel pipe column and the cast-in-place pile are connected firmly, and the formed ultra-long steel pipe structure column pile is higher in structural strength. In a preferred embodiment, a plurality of pegs 113 may be arranged in a quincunx arrangement to further increase structural strength.

Also, each of the plurality of tie bars 114 is welded to the ends of a plurality of tie bars 113 of a set of tie bars 113.

Like this, the slide steel bar 114 is fixed by welding through the stud 113, and its stable in structure is guaranteed, and the realization encloses and locates the stud 113 simultaneously, and in this embodiment, because only need lead the bottom of smooth steel-pipe column 11, consequently, the slide steel bar 114 only locates the stud 113 department of lower part, also is fixed with a plurality of studs 113 welded connections of the 113 lower parts of stud group, of course, according to needs, also can weld whole stud 113, and the description is omitted. Of course, in another embodiment, the skid-guiding bars 114 may also be welded to the outer side wall of the steel pipe column 11 by connecting rods.

In addition, the multiple groups of pegs 113 are uniformly spaced and annularly arranged on the outer side wall of the fixing portion 111, and the number of the groups of pegs 113 at least includes three groups.

Thus, at least three groups of the pegs 113 correspond to at least three slide-guiding bars 114, so that the steel pipe column 11 is stable in structure and convenient to lower. In this embodiment, the number of the stud 113 groups is twenty, the number of the corresponding slide-guiding reinforcing bars 114 is twenty, and the structure formed by the plurality of slide-guiding reinforcing bars 114 tends to be a cylinder, and the end part tends to be a cone, which is more beneficial to the downward placement of the steel pipe column 11.

Referring to fig. 1, in an embodiment of the present invention, the end of the fixing portion 111 is provided with a lower insertion portion 112 in a closed conical shape, the sliding guide portion is disposed around the lower insertion portion 112, and each sliding guide reinforcement 114 extends to be welded to the periphery of the end of the lower insertion portion 112.

The diameter of the lower inserting part 112 is gradually reduced along the direction from the top to the bottom of the steel pipe column 11, the end part of the slide guiding steel bar 114 is welded on the periphery of the end part of the lower inserting part 112, so that the slide guiding part tends to be in a closed conical shape, the closed conical lower inserting part 112 meets the process requirement of a rear inserting method, and two times of concrete pouring are not interfered and influenced by each other and are not limited by the concrete solidification time and strength, so that the steel pipe column has obvious advantages compared with the conventional process; and, the conical configuration can reduce frictional resistance for easy drop-in placement. In addition, the lower insertion portion 112 makes the slide guide portion more stable, but in another embodiment, the slide guide portion may be obtained by an end welding machine between the plurality of slide guide bars 114 without the lower insertion portion 112.

In addition, the skid bars 114 are shown here as plain round bars.

The section of the plain steel bar is a circular section, and the surface of the plain steel bar has no edge, so that the steel pipe column 11 is more beneficial to being placed downwards.

Referring to fig. 1, in an embodiment of the present invention, a top plate is anchored to the top of the steel pipe column 11, and a dowel bar is installed on the top plate.

A steel reinforcement cage can be arranged on the top plate of the steel pipe column to support a subsequent structure, and the top plate can be further anchored through the inserted bars arranged on the top plate of the steel pipe column, so that the steel pipe column 11 is stable in structure.

It should be noted that, when the steel pipe column 11 is lowered, the top of the steel pipe column 11 is used for connecting a tool column, the tool column is fixed with the steel pipe column 11 by bolts, and the diameter of the tool column is larger than that of the steel pipe column 11.

Through this instrument post to steel-pipe column 11 is transferred to vertical stability, and can avoid steel-pipe column 11 to drop in bored concrete pile 12. Specifically, for connecting rod steel-pipe column 11 and instrument post, the roof and the instrument post threaded connection of accessible steel-pipe column 11, or, steel-pipe column 11 stretches into in the instrument post, and the lateral wall of the two passes through threaded connection and realizes fixing, and other current connected modes still can be referred to certainly, like this to put steel-pipe column 11 perpendicularly, and make things convenient for follow-up demolish the instrument post.

In addition, the tool post is hollow, a horizontal plate is welded on the inner wall of the tool post, and an inclination angle sensor is fixedly arranged on the horizontal plate.

The verticality of the tool column and the steel pipe column 11 can be monitored in real time through the inclination angle sensor, and the verticality of the steel pipe column 11 inserted downwards is guaranteed.

Referring to fig. 2, the present invention further provides an ultra-long steel tubular column pile, which includes a cast-in-place pile 12 and a steel tubular column. The structure of the steel pipe structural column can refer to the above embodiments, and is not described herein again.

In addition, a reinforcement cage is arranged at the bottom of the cast-in-place pile 12 and is annularly arranged at the bottom of the steel pipe column 11, pile body concrete is filled in the cast-in-place pile 12, and in-pipe concrete is filled in the steel pipe column 11.

Like this, realized this overlength steel tubular construction column through this bored concrete pile 12 and steel-pipe column 11, and this overlength steel tubular construction column pile vertical deviation is little, and structural strength is high.

Referring to fig. 1 and fig. 2, in order to obtain the column shape of the ultra-long steel pipe structure, in this embodiment, a method for positioning a steel pipe structure pile by a reverse construction method through a rotary drilling and full rotation combined back-inserting method is provided, which includes the following steps:

before S10:

and leveling the construction site, paying off and positioning at the pile position, and then hardening the construction area except the pile hole position.

Because the rotary excavating machine, the full-rotation equipment and the like are large-scale mechanical equipment, the requirement on the site is high, and the site needs to be specially planned before construction; in order to ensure the safety of mechanical operation, firstly, the mechanical walking route and the operation surface need to be hardened; and measuring and paying off by using a total station to determine a coordinate point of a pile position, guiding the coordinate point to the periphery by using a cross method, making a pile protection by using short steel bars, and marking the central point of the pile position by using the short steel bars.

S10, arranging a long protection barrel at the position of the pre-drilled hole;

specifically, the method comprises the following steps:

placing a positioning plate, and hoisting the full-rotation equipment to the positioning plate; when the positioning plate is placed, the positioning plate is positioned by a cross method, the positioning plate is plate-shaped, the center of the positioning plate is provided with a through hole corresponding to a pile position, and four corners of the upper surface of the positioning plate are provided with semi-arc-shaped clamping grooves which can correspond to four supporting legs at the bottom of the full-rotation equipment and are used for assisting in positioning the full-rotation equipment;

after the full-circle slewing equipment is in place, supporting equipment such as a power cabinet and the like needs to be hung and placed, and an oil pipe of the power cabinet is installed to be used as driving.

In the embodiment, the long casing comprises a plurality of sleeves, before the sleeves are used, the verticality of a single section of sleeve needs to be checked and corrected, the verticality deviation is smaller than D/500(D is the pile diameter), then the verticality of the spliced long casing is checked, and each section of sleeve is numbered and marked for splicing in sequence;

after the checking and the correction are finished, the full-rotating equipment is used for placing the sleeves in sections according to the sleeve numbers. In the process of placing the casing, firstly, the perpendicularity of the first section and the second section is ensured, when the casing is pressed in, the perpendicularity is checked by using a horizontal instrument, after the casing is pressed into a certain depth (about 1.5m), the deviation between the center of the casing and the center of the pile is checked by using a retaining pile, and the deviation value is ensured to meet the standard requirement; therefore, the stability of the orifice stratum is ensured, and the auxiliary guide function of the pile casing provides reliable premise guarantee for pile body verticality construction control.

The full-rotating equipment is driven to rotate to press the long pile casing downwards, and the grab bucket is matched to take soil until the long pile casing is placed at a specified position.

And after the long pile casing is placed, the full-rotation equipment and the positioning plate are removed.

S20, drilling a hole at the pre-drilled hole by using a rotary drilling machine to obtain a pile hole;

the utility model relates to an in the embodiment, the precious Emei of preferred adoption BG46 digs the machine soon, adopts positive circulation mud dado technology to carry out the drilling operation, and this digs the machine soon self has the depth of hole and straightness monitoring system that hangs down, can pay close attention to drilling depth and control index such as the straightness that hangs down in real time among the drilling operation process, if in time adjust the deviation. The performance is stable, the efficiency of construction is high, and the stake end is gone into the rock and is adopted hierarchical reaming technology, especially is showing the efficiency of construction promotion of long pile.

After drilling, the hole needs to be cleaned, and the quality of the hole wall needs to be detected, in this embodiment, a DM-604R ultrasonic wall measuring instrument is preferably used to detect the quality of the formed hole, which can measure control indexes such as hole depth, hole diameter and verticality of the pile, and ensure that the construction quality meets the design requirements.

In addition, the dregs generated by the hole forming of the rotary digging machine are placed in a special dreg storage box, and the mud head vehicle is matched with the special dreg storage box to be timely cleaned and transported in the construction process. And moreover, the mud in the construction process is subjected to residue-soil separation through a mud-soil separation system, so that the cyclic utilization rate of the mud is improved, and the mud discharge is reduced. Meanwhile, the silt, dregs and soil separated by the system are packaged and woven into bags, can be comprehensively utilized as sand bags to be stacked around the pile holes, guide and gather the slurry to be convenient for recycling, can also avoid overflowing slurry from flowing out at will, and is green and environment-friendly.

S30, placing a reinforcement cage in the pile hole;

after the clear hole finishes, need lay the steel reinforcement cage, because the pile body is longer, the steel reinforcement cage adopts segmentation hoist and mount, drill way welded mode to lay, one section of steel reinforcement cage is transferred promptly, and adjacent steel reinforcement cage is at the drill way of stake hole welded fastening to even be a whole, and, in order to avoid the steel reinforcement cage of bottom to drop, transfer the in-process, the accessible wears to establish the reinforcing bar and shelve it and be fixed in drill way department.

S40, pouring concrete in the pile hole;

specifically, the method comprises the following steps:

after the steel reinforcement cage is placed in place, the guide pipe is put down; and after checking that the sediment at the bottom of the hole meets the design requirements, pouring concrete in the pile hole.

When sediment at the bottom of the inspection hole is detected, the pumping reverse circulation can be adopted for secondary bottom cleaning. In addition, in the embodiment, in order to timely know whether the concrete pouring reaches the over-pouring position, pouring careless equipment can be arranged on the reinforcement cage to accurately control the elevation of the concrete, when the over-pouring position is reached, an automatic alarm prompt can be given out so as to facilitate pouring, and the defects of insufficient pouring height and waste caused by excessive over-pouring are effectively avoided.

In this embodiment, the concrete poured into the pile hole is super-retarding concrete, which is beneficial to the insertion and positioning of the steel pipe column 11.

Further, before S50:

after the universal platform is in place, adjusting the level of the universal platform and rechecking to keep the center point of the universal platform consistent with the center of the steel pipe column 11;

hoisting the full-rotation equipment to a universal platform, and assisting in positioning the full-rotation equipment through clamping grooves formed in four corners of the universal platform;

after the full-rotation equipment is in place, the full-rotation equipment is adjusted to be horizontal and rechecked to enable the center point of the full-rotation equipment to be consistent with the center of the steel pipe column 11.

Before the universal platform is placed, the site needs to be cleaned again to ensure flatness, and the central point position of the steel pipe column 11 during downward insertion is checked and positioned.

The middle of the universal platform is provided with a through hole, the side wall of the through hole is provided with a plurality of arc-shaped clamping pieces, and the arc-shaped clamping pieces are driven by a hydraulic control system to hold the tool post tightly. And, four angles of this universal platform's upper surface have the draw-in groove for the supporting leg of full slewing equipment bottom is fixed a position, so that place full slewing equipment, and tentatively fix a position the two. In addition, in this embodiment, the universal platform is driven to ascend and descend by a hydraulic control system, a through hole is also formed in the middle of the universal platform, a clamping device is arranged on the side wall of the through hole, the clamping device comprises a plurality of clamping plates which are controlled to stretch and retract by the hydraulic control system so as to hold the tool column tightly, and the steel pipe column 11 can be inserted downwards when the tool column is held tightly.

S50, hoisting the steel pipe column 11;

specifically, the method comprises the following steps:

splicing the steel pipe column 11 with the tool column; in order to ensure the perpendicularity of the steel pipe column 11, the steel pipe column 11 is processed and formed at one time in a steel processing factory according to the designed length, the trial splicing work of the tool columns with the same specification as the site is completed in the factory, and then the whole steel pipe column is transported to the construction site, so that the efficiency of site operation is improved.

Before the steel pipe column 11 is hoisted, a tilt angle sensor is arranged on a horizontal plate at the top of the tool column; the inclination angle sensor is used for monitoring the verticality of the steel pipe column 11, the precision of the inclination angle sensor can reach 0.01 degrees, and the verticality of the steel pipe structural column can be well guaranteed.

And hoisting the steel pipe column 11 by adopting a double-crane hoisting crane, slowly converting the horizontal state of the steel pipe column 11 into a vertical state, and then transferring the steel pipe column to a pile hole position by a main crane.

The double-crane lifting comprises a main crane and an auxiliary crane, the steel pipe column 11 is lifted by the main crane and the auxiliary crane simultaneously, and the lifting speed of the main crane at the top is higher, so that the steel pipe column 11 is lifted to be in a vertical state gradually, and the steel pipe column is convenient to insert into a pile hole.

S60, slowly inserting the steel pipe column 11 into the pile hole, adjusting the posture of the steel pipe column 11 when the tool column at the top of the steel pipe column 11 reaches a certain position of the full-rotation equipment, and then simultaneously tightly holding the tool column by using a clamping device of the full-rotation equipment and a clamping piece of a universal platform, wherein the steel pipe column 11 is in a vertical state; loosening the clamping piece of the universal platform, holding the tool column by a clamping device of the full-rotation equipment, pressing down for a stroke, and inserting the steel pipe column 11 downwards; then the clamping piece of the universal platform tightly holds the tool column, the clamping device of the full-rotation equipment is loosened and ascended for a stroke, then the tool column is tightly held at the same time, and the verticality of the steel pipe column 11 is monitored in real time; the actions are repeated in a circulating mode until the steel pipe column 11 is inserted to the designed elevation;

in the above steps, after the posture of the steel pipe column 11 is adjusted, the clamping device of the full-circle slewing equipment and the clamping piece of the universal platform are used for simultaneously holding the tool column, and the steel pipe column 11 is in a vertical state, the inclination angle sensor and the inclination display instrument are connected, and the reading of the inclination display instrument is calibrated and adjusted to be used as the initial vertical posture of the steel pipe column 11;

in the process of inserting the steel pipe column 11 downwards, the vertical state of the steel pipe structural column is monitored in real time through the inclination display instrument, and accurate fine adjustment is carried out by utilizing full-rotation equipment.

Therefore, the verticality requirement of the downward insertion of the steel pipe column 11 is ensured at any time, and after the downward insertion is completed, the total station is required to be adopted for retesting again so as to ensure the position requirement.

S70, pouring concrete in the steel pipe column 11;

before this, the steel-pipe column 11 is placed with the dowel bars on the top plate. So that the steel pipe column 11 is used as a supporting structure subsequently, and the top plate at the top of the steel pipe column 11 can be further anchored through the dowel bars.

In this embodiment, the concrete in the steel pipe structural column is cast by a conduit casting method, the concrete adopts C50 compensated shrinkage concrete, and a small amount of micro-expansion agent is added, so that the steel pipe column 11 has a stable structure and higher strength.

S80, dismantling the tool column and backfilling broken stones.

Specifically, the method comprises the following steps:

after concrete pouring in the steel pipe column 11 is completed, holding the tool column by a clamping device of the universal platform, and removing the full-rotation equipment;

after the lower pile foundation concrete is initially set and reaches a certain strength, the tool column is dismantled; in this embodiment, one day may be waited.

Removing the universal platform;

filling broken stones into the gap between the steel pipe column 11 and the pile hole; therefore, the steel pipe structure column can be prevented from deflecting due to uneven stress, and gravel backfilling is uniformly performed around the steel pipe structure column in the backfilling process.

And (3) pulling out the long pile casing by using full-rotation equipment, namely, pulling out the long pile casing through a clamping device of the full-rotation equipment, and further finishing obtaining the ultra-long steel pipe structure pile.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. A steel tubular structural column, comprising:

the bottom of steel-pipe column has the fixed part, the lateral wall fixed ring of fixed part is equipped with a plurality of pegs, the lateral wall of fixed part still fixedly is equipped with many and leads smooth reinforcing bar, lead smooth reinforcing bar and follow the top to the bottom direction of steel-pipe column extend to arrange, many it encloses to locate a plurality of to lead smooth reinforcing bar the pegs, and many it extends to lead smooth reinforcing bar the tip of fixed part is formed with leads smooth portion, follows the top to the direction of bottom of steel-pipe column, the diameter of leading smooth portion reduces gradually.

2. A steel tubular structural column according to claim 1, wherein the plurality of studs form a plurality of stud sets, the plurality of stud sets are arranged around the outer side wall of the fixing portion at intervals, each stud set has a plurality of studs arranged at intervals, and the studs of each set are arranged in a top-to-bottom direction of the steel tubular column.

3. A steel tubular structural column as claimed in claim 2, wherein each said skid bar is welded to the ends of a plurality of said pegs of a said set of pegs.

4. A structural steel tubular column as set forth in claim 3 wherein said plurality of bolt sets are disposed around the outer sidewall of said fixing portion at regular intervals, said number of bolt sets including at least three.

5. A steel tubular structural column as claimed in any one of claims 1 to 4, wherein the end of the fixing portion is provided with a lower insertion portion having a closed conical shape, the sliding guide portion is provided around the lower insertion portion, and each of the sliding guide bars extends to be welded to an outer periphery of the end of the lower insertion portion.

6. A structural steel tubular column as claimed in any one of claims 1 to 4 wherein the skid bars are plain round bars.

7. A steel tubular structural column as claimed in any one of claims 1 to 4, wherein the top of the steel tubular column is used for connecting a tool column, the tool column and the steel tubular column are fixed by bolting, and the diameter of the tool column is larger than that of the steel tubular column.

8. A steel tubular structural column according to claim 7, wherein a horizontal plate is welded to the inner wall of the tool column, and a tilt sensor is fixed to the horizontal plate.

9. An ultra-long steel tube structure column pile, which is characterized by comprising a cast-in-place pile and the steel tube structure column as claimed in any one of claims 1 to 8, wherein a reinforcement cage is arranged at the pile bottom of the cast-in-place pile, the reinforcement cage is annularly arranged at the bottom of the steel tube column, pile body concrete is filled in the cast-in-place pile, and in-tube concrete is filled in the steel tube column.

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