Construction method of large-diameter steel pipe reinforced concrete column top-down joint

Abstract

The present application relates to a kind of large diameter steel pipe stiff concrete column reverse construction joint construction method, comprising the following steps: construction pile foundation, installation positioning base, install steel pipe column positioning structure, install steel pipe column, construction coupling beam.The beneficial effects of the present application are: using positioning base to accurately position and fix steel pipe column, using the rotation of connecting rod to control the rotation of ellipsoid, to flexibly adjust the elevation of each point at the bottom end of steel pipe column, to ensure the perpendicularity of steel pipe column, using connecting plate to lock the state of steel pipe column, to realize the reliability and stability of steel pipe column and pile foundation reverse construction connecting joint;Using hoop ring and support block to install coupling beam formwork, using resting groove and resting hole to flexibly adapt to the formwork installation of a variety of size coupling beams, to improve the applicability of formwork fixing and positioning.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of steel pipe concrete column construction, and particularly relates to a construction method of a large-diameter steel pipe concrete column reverse construction joint. BACKGROUND

[0002] In view of the diversification of domestic buildings and the increasing demand for high and large space, the underground and enclosure structure of the building is constructed by using the reverse construction method. The reverse construction method has the following advantages: the influence on the surrounding environment is small during the earth excavation stage; the foundation pit is not exposed, thereby reducing the influence of dust and noise on the surrounding environment; the floor slab constructed in advance can be used as a material storage yard, thereby solving the site problem during the earth excavation stage. In the project with small site in the city and high protection pressure of adjacent buildings, the reverse construction method is more and more favored.

[0003] In the structural design of the reverse construction method, the structure in the form of 'one column and one pile' can save cost, but also leads to complex construction of the basement structure beam-column joint and large difficulty in construction and deepening design. In particular, the installation and positioning adjustment of the steel pipe column consume more construction time, and a large-diameter steel pipe concrete column reverse construction joint and construction method which is simple in steel pipe column installation operation, reliable in installation, and flexible in installation precision adjustment are urgently needed. SUMMARY

[0004] The present application aims to overcome the deficiencies in the prior art and provide a construction method of a large-diameter steel pipe concrete column reverse construction joint.

[0005] The construction method of the large-diameter steel pipe concrete column reverse construction joint comprises the following steps:

[0006] Step one, construction of pile foundation: the pile foundation is constructed at the set position and arranged at intervals, and the pile foundation comprises adjacent first pile foundation and second pile foundation.

[0007] Step two, installation of positioning base: a positioning base is installed at the top end of the pile foundation; a plurality of ellipsoids are arranged in the positioning base in a ring shape, and the plurality of ellipsoids are adjusted in angle by a plurality of connecting rods;

[0008] Step three, installation of steel pipe column positioning structure: a steel pipe outer ring is installed on the outer surface of the bottom of the steel pipe column, and a connecting plate is installed on the steel pipe outer ring;

[0009] Step four, installation of steel pipe column: the steel pipe column is hoisted to the plurality of ellipsoids of the positioning base, the ellipsoids are rotated by rotating the connecting rods to adjust the perpendicularity of the steel pipe column, and concrete is poured into the inner cavity of the steel pipe of the steel pipe column;

[0010] Step five, construction of coupling beam: a formwork support structure is installed on the steel pipe column, a formwork side plate and a formwork bottom plate of the coupling beam are supported, and the coupling beam is poured at the top end of the adjacent steel pipe column.

[0011] As preferred, in step two, the positioning base comprises an annular base on the top of the pile foundation, the annular base is in the shape of a circular ring; the top of the annular base is provided with vertically parallel vertical edge columns arranged at intervals, the annular base is provided with base ribs, the two base ribs intersect with each other, the upper parts of the two base ribs are provided with middle columns, the outer surfaces of the middle columns are provided with a plurality of sleeves; the top ends of the vertical edge columns are provided with lower fixing plates, the lower fixing plates are annular; the upper ends of the lower fixing plates are provided with vertically reinforcing struts arranged at intervals, the vertically reinforcing struts are tangent to the outer ring of the lower fixing plates; the top parts of the vertically reinforcing struts are connected with upper fixing plates; the inner sides of the reinforcing struts are provided with outer ring plates; the inner sides of the outer ring plates are provided with inner ring plates; the inner ring plates and the outer ring plates form base grooves therebetween, a plurality of ellipsoids arranged at intervals are installed in the cavities of the base grooves, connecting rods are penetrated through the ellipsoids, the ellipsoids and the connecting rods are fixedly connected; the inner ends of the connecting rods are penetrated into and movably connected into the sleeves, the inner ends of the connecting rods rotate in the sleeves, the outer ends of the connecting rods penetrate through the outer ring plates and are fixed on the outer surfaces of the outer ring plates by fixing bolts.

[0012] As preferred, in step four, the bottom ends of the steel pipe columns are installed and fall into the base grooves by hoisting the steel pipe columns, the two adjacent pile foundations are a first pile foundation and a second pile foundation, the steel pipe columns comprise first steel pipe columns and second steel pipe columns, the first steel pipe columns are installed on the first pile foundation, and the second steel pipe columns are installed on the second pile foundation.

[0013] As preferred, in step four, the outer ends of the connecting rods are rotated, the inner ends of the connecting rods rotate in the sleeves, and the ellipsoids are rotated at the same time; the bottom ends of the steel pipe columns directly sit on the ellipsoids, the ellipsoids are rotated by the connecting rods, so that the topmost elevations of the ellipsoids at each position all meet the set installation elevations of the bottom parts of the steel pipe columns, and the perpendicularity adjustment of the steel pipe columns is realized.

[0014] As preferred, in step four, after the perpendicularity adjustment of the steel pipe columns is completed, the connecting plates and the upper fixing plates are fixedly connected by the connecting bolts, and the locking of the positioning state of the steel pipe columns is realized.

[0015] As preferred, in step five, the top outer surfaces of the steel pipe columns are provided with hoop rings and anchor plates, the hoop rings comprise first hoop rings and second hoop rings, the first anchor plates and the second anchor plates on the first hoop rings and the second hoop rings are connected by bolts; the side of the connecting beam of the hoop ring is provided with a resting plate, the lower end of the resting plate is provided with a supporting rib; the upper end of the resting plate is provided with a supporting block, the two sides of the supporting block are provided with a plurality of spaced resting grooves, the width of the resting grooves is greater than the width of the formwork side plate of the connecting beam, the resting grooves are used for installing the formwork side plate of the connecting beam, the formwork side plate is installed in different resting grooves to meet the requirements of different width connecting beam sizes; a plurality of upper and lower spaced resting holes are arranged in each resting groove.

[0016] As preferred, in step five, according to the set width of the coupling beam, the formwork side plate is installed into the corresponding resting groove, according to the set height of the coupling beam, the positioning rod is installed in the corresponding height resting hole, and the bottom end of the formwork side plate is located on the positioning rod; then the formwork bottom plate is installed, and the two ends of the formwork bottom plate are located on the supporting blocks of the two steel pipe columns respectively.

[0017] The large-diameter steel pipe concrete column top-down joint obtained by any of the above methods.

[0018] The beneficial effects of the present application are:

[0019] 1) The present application uses the positioning base to accurately position and fix the steel pipe column, uses the rotation of the connecting rod to control the rotation of the ellipsoid, flexibly adjusts the elevation of each point at the bottom end of the steel pipe column, to ensure the perpendicularity of the steel pipe column, uses the connecting plate to lock the state of the steel pipe column, and realizes the reliability and stability of the steel pipe column and pile foundation top-down connection joint.

[0020] 2) The present application uses the hoop ring and the supporting block to install the coupling beam formwork, uses the resting groove and the resting hole to flexibly adapt to the formwork installation of coupling beams of various sizes, and improves the applicability of formwork fixing and positioning. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a large-diameter steel pipe concrete column top-down joint section view of the present application;

[0022] Figure 2 It is Figure 1 It is a node A enlarged view;

[0023] Figure 3 It is a large-diameter steel pipe concrete column top-down joint left view of the present application;

[0024] Figure 4 It is a large-diameter steel pipe concrete column top-down joint front view of the present application;

[0025] Figure 5 It is a large-diameter steel pipe concrete column top-down joint plan view of the present application;

[0026] Figure 6 It is a positioning base structure schematic view;

[0027] Figure 7 It is a positioning base structure schematic view after installing the steel pipe.

[0028] In the drawings, the component list represented by each reference sign is as follows:

[0029] 1. Pile foundation; 2. First pile foundation; 3. Second pile foundation; 4. Steel pipe column; 5. First steel pipe column; 6. Second steel pipe column; 7. Annular base; 9. Base rib; 10. Intermediate column; 11. Side column; 12. Lower fixing plate; 13. Outer ring plate; 14. Reinforcing support; 15. Fixing bolt; 16. Upper fixing plate; 17. Connecting plate; 18. Outer ring of steel pipe; 19. Connecting bolt; 20. Ellipse; 21. Sleeve; 22. Connection 23. Rod; 24. Inner ring plate; 25. Bottom groove; 26. Adjustment rod; 27. Connecting beam casting chamber; 28. Template bottom plate; 29. ​​Template side plate; 30. Steel pipe inner cavity; 31. Clamping ring; 32. First clamping ring; 33. Second clamping ring; 34. Anchor plate; 35. Second anchor plate; 36. Bolt; 37. Support rib; 38. Support plate; 39. Support block; 40. Support groove; 41. Support hole. Detailed Implementation

[0030] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that those skilled in the art can make several modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0031] Example 1

[0032] As one embodiment, this method for constructing a reverse-construction joint of a large-diameter steel-tube reinforced concrete column is characterized by the following steps:

[0033] Step 1: Construction of pile foundation 1. Pile foundation 1 is constructed at intervals at the designated locations. Pile foundation 1 includes adjacent first pile foundation 2 and second pile foundation 3.

[0034] Step 2: Install the positioning base. Install the positioning base for positioning the steel pipe column 4 at the top of pile foundation 1.

[0035] The positioning base comprises a ring-shaped base 7 on the top of the pile foundation 1, which is in the shape of a circular ring. The top of the ring-shaped base 7 is provided with vertically-arranged parallel vertical edge columns 11, and the ring-shaped base 7 is internally provided with two intersecting base ribs 9, the upper portions of the two base ribs 9 being provided with vertical middle columns 10, the outer surfaces of the middle columns 10 being provided with a plurality of sleeves 21. The top ends of the vertical edge columns 11 are provided with lower fixing plates 12, which are also in the shape of a ring. The upper ends of the lower fixing plates 12, which are tangent to the outer ring, are provided with vertically-arranged reinforcing columns 14 at intervals, the top portions of the reinforcing columns 14 being connected with upper fixing plates 16. The inner side of the reinforcing columns 14 is provided with an outer ring plate 13. The inner side of the outer ring plate 13 is provided with an inner ring plate 23. The inner ring plate 23 and the outer ring plate 13 are separated by a bottom groove 24, and a plurality of ellipsoids 20 are arranged at intervals in the cavity of the bottom groove 24. The ellipsoids 20 are each penetrated by a connecting rod 22, and the ellipsoids 20 and the connecting rod 22 are fixedly connected. The inner ends of the connecting rods 22 are each penetrated into the sleeve 21 and are movably connected, the inner ends of the connecting rods 22 being rotatable in the sleeve 21, the outer ends of the connecting rods 22 penetrating through the outer ring plate 13 and being fixed to the outer surface of the outer ring plate 13 by fixing bolts 15. The connecting rods 22 are provided with holes at the positions where they intersect with the structure during the penetration process.

[0036] The above-mentioned ring-shaped structure and the surrounding arrangement are concentric.

[0037] Step three, installing the positioning structure of the steel pipe column 4. A steel pipe outer ring 18 is installed on the outer surface of the bottom of the steel pipe column 4, and a connecting plate 17 is installed on the steel pipe outer ring 18, which can be attached to the upper top plate.

[0038] Step four, installing the steel pipe column 4. The steel pipe column 4 is hoisted to the plurality of ellipsoids 20 of the positioning base, the rotation of the ellipsoids 20 is controlled by rotating the connecting rods 22, the verticality of the steel pipe column 4 is adjusted, and the inner cavity 29 of the steel pipe of the steel pipe column 4 is poured with concrete.

[0039] The bottom end of the steel pipe column 4 is installed in the bottom groove 24 by hoisting the steel pipe column 4, including installing the first steel pipe column 5 on the first pile foundation 2, installing the second steel pipe column 6 on the second pile foundation 3, and sequentially installing in place.

[0040] The outer ends of the connecting rods 22 are rotated, the inner ends of the connecting rods 22 are rotated in the sleeves 21, and the ellipsoids 20 are rotated at the same time. Since the bottom end of the steel pipe column 4 is directly seated on the ellipsoids 20, the topmost elevations of the ellipsoids 20 at each position are adjusted to satisfy the set installation elevation of the bottom of the steel pipe column 4. In this way, the elevations of the bottoms of the steel pipe column 4 at each position are adjusted by controlling the state of the ellipsoids 20, and the verticality of the steel pipe column 4 is controlled by the elevations of the bottoms at each position, so as to realize the adjustment of the verticality of the steel pipe column 4.

[0041] After the verticality adjustment of the steel pipe column 4 is completed, the connecting plate 17 is fixedly connected with the upper fixing plate 16 through the connecting bolt 19, so as to realize the locking of the positioning state of the steel pipe column 4.

[0042] Embodiment two

[0043] As another embodiment, the embodiment two is based on the embodiment one and proposes a method for pouring the coupling beam on the two steel pipe columns 4, which comprises the following step five.

[0044] Step five, construction of the coupling beam: the formwork support structure is installed on the steel pipe column 4, the formwork side plate 28 and the formwork bottom plate 27 of the coupling beam are supported, and the coupling beam is poured on the top ends of the adjacent steel pipe columns 4.

[0045] The hoop ring 30 and the anchoring plate 33 are installed on the outer surface of the top of the steel pipe column 4, the first hoop ring 31 and the second hoop ring 32 are included, the first anchoring plate 34 and the second anchoring plate 35 on the first hoop ring 31 and the second hoop ring 32 are connected through the bolt 36. The coupling beam side of the hoop ring 30 is provided with the resting plate 38, the lower end of the resting plate 38 is provided with the support rib 37. The upper end of the resting plate 38 is provided with the support block 39, the two sides of the support block 39 are provided with a plurality of spaced resting grooves 40, the width of the resting groove 40 is slightly larger than the width of the formwork side plate 28 of the coupling beam, the resting groove 40 is used for installing the formwork side plate 28 of the positioning coupling beam, by installing the formwork side plate 28 of the coupling beam in different resting grooves 40, the requirement of different width of the coupling beam size is met. Each resting groove 40 is provided with a plurality of upper and lower spaced resting holes 41.

[0046] According to the set width of the coupling beam, the formwork side plate 28 is installed into the corresponding resting groove 40, according to the set height of the coupling beam, the positioning rod 25 matched with the hole diameter is installed in the corresponding height resting hole 41, and the bottom end of the formwork side plate 28 is seated on the positioning rod 25. Then the formwork bottom plate 27 is installed, and the two ends of the formwork bottom plate 27 are located on the support blocks 39 on the two sides respectively.

[0047] It should be noted that the same or similar parts in the embodiment and the embodiment one can be referred to each other, and will not be described herein.

[0048] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

Claims

1. A construction method of a large-diameter steel pipe reinforced concrete column top-down joint, characterized by, Comprising the following steps: Step one, construction of pile foundation: construction of pile foundation at the set position, the pile foundation comprises adjacent first pile foundation and second pile foundation; Step two, installation of positioning base: installing positioning base at the top of pile foundation; a plurality of ellipsoids are arranged in the positioning base; the ellipsoids are respectively adjusted in angle by a plurality of connecting rods; the positioning base comprises a ring-shaped base at the top of the pile foundation, and the ring-shaped base is in the shape of a circular ring; a plurality of vertical edge columns are arranged at the top of the ring-shaped base; a plurality of base ribs are arranged in the ring-shaped base; the base ribs intersect with each other; a middle column is arranged at the upper part of the base ribs; a plurality of sleeves are arranged on the outer surface of the middle column; a lower fixing plate is arranged at the top of the vertical edge column; the lower fixing plate is in the shape of a ring; a plurality of vertical reinforcing columns are arranged at the upper end of the lower fixing plate; the vertical reinforcing columns are tangent to the outer ring of the lower fixing plate; an upper fixing plate is connected to the top of the vertical reinforcing column; an outer ring plate is arranged on the inner side of the vertical reinforcing column; an inner ring plate is arranged on the inner side of the outer ring plate; a bottom groove is formed between the inner ring plate and the outer ring plate; a plurality of ellipsoids are arranged in the cavity of the bottom groove; a connecting rod is arranged through the ellipsoids; the connecting rod is fixedly connected to the ellipsoids; the inner end of the connecting rod is arranged in the sleeve and is movably connected to the sleeve; the inner end of the connecting rod rotates in the sleeve; the outer end of the connecting rod passes through the outer ring plate and is fixed to the outer surface of the outer ring plate by a fixing bolt; Step three, installation of steel pipe column positioning structure: a steel pipe outer ring is arranged on the outer surface of the bottom of the steel pipe column; a connecting plate is arranged on the steel pipe outer ring; Step four, installation of steel pipe column: hoisting the steel pipe column to the plurality of ellipsoids of the positioning base; rotating the connecting rod to control the rotation of the ellipsoids; adjusting the perpendicularity of the steel pipe column; pouring concrete into the inner cavity of the steel pipe; rotating the outer end of the connecting rod; the inner end of the connecting rod rotates in the sleeve; the bottom end of the steel pipe column is directly seated on the ellipsoids; rotating the connecting rod to make the top elevation of each ellipsoid meet the set installation elevation of the bottom of the steel pipe column; adjusting the perpendicularity of the steel pipe column; Step five, construction of coupling beam: installing a formwork support structure on the steel pipe column; supporting a formwork side plate and a formwork bottom plate of the coupling beam; pouring the coupling beam at the top of the adjacent steel pipe columns; a hoop ring and an anchoring plate are arranged on the outer surface of the top of the steel pipe column; the hoop ring comprises a first hoop ring and a second hoop ring; the first anchoring plate and the second anchoring plate on the first hoop ring and the second hoop ring are connected by bolts; a resting plate is arranged on the coupling beam side of the hoop ring; a supporting rib is arranged at the lower end of the resting plate; a supporting block is arranged at the upper end of the resting plate; a plurality of resting grooves are arranged at the two sides of the supporting block; the width of the resting grooves is greater than the width of the formwork side plate of the coupling beam; the resting grooves are used for installing the formwork side plate of the coupling beam; the formwork side plate is installed in different resting grooves to meet the requirement of different width of the coupling beam; a plurality of upper and lower resting holes are arranged in each resting groove; according to the set width of the coupling beam, the formwork side plate is installed in the corresponding resting groove; according to the set height of the coupling beam, a positioning rod is installed in the resting hole at the corresponding height; the bottom end of the formwork side plate is seated on the positioning rod; then, the formwork bottom plate is installed; the two ends of the formwork bottom plate are respectively located on the supporting blocks of the two steel pipe columns.

2. The construction method of a top-down joint of a large-diameter steel pipe reinforced concrete column according to claim 1, characterized in that, In step four, the bottom end of the steel pipe column is installed into the bottom groove by hoisting the steel pipe column, the two adjacent pile foundations are a first pile foundation and a second pile foundation, the steel pipe column comprises a first steel pipe column and a second steel pipe column, the first steel pipe column is installed on the first pile foundation, and the second steel pipe column is installed on the second pile foundation.

3. The construction method of a top-down joint of a large-diameter steel tube reinforced concrete column according to claim 1, characterized in that, In step four, after the perpendicularity of the steel pipe column is adjusted, the connecting plate is fixedly connected with the upper fixing plate through the connecting bolt, so that the positioning state of the steel pipe column is locked.

4. A large diameter steel tube reinforced concrete column top-down construction joint, characterized by The method according to any one of claims 1 to 3.

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