CN116005844A - Assembled close-packed steel tube steel plate concrete shear wall capable of being constructed in reversible mode - Google Patents
Assembled close-packed steel tube steel plate concrete shear wall capable of being constructed in reversible mode Download PDFInfo
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Abstract
The invention relates to an assembled close-packed steel tube steel plate concrete shear wall capable of being constructed in a reversible mode, and relates to the technical field of assembled buildings. The concrete-filled steel tube comprises a concrete-filled steel tube column, an ear plate, a connecting steel plate, a positioning connecting piece and cast-in-place concrete; the steel pipe concrete columns are uniformly arranged along the length direction of the wall; the lug plate is welded and fixed with the steel tube concrete column; the connecting steel plates are arranged between adjacent steel tube concrete columns along the length direction parallel to the wall, and form a concrete cavity; through holes for positioning connecting pieces are reserved in the connecting steel plates and the lug plates, and the positioning connecting pieces are inserted into the through holes; and the cast-in-place concrete is filled in a concrete cavity between the inside of the steel tube concrete column and the connecting steel plate. The invention fully utilizes the advantages of the steel structure and the concrete structure, is environment-friendly, is convenient to install, has excellent anti-seismic performance and durability, and can greatly improve the construction efficiency and shorten the construction period by the reverse construction method.
Description
Technical Field
The invention relates to the technical field of assembled buildings, in particular to an assembled close-packed steel tube steel plate concrete shear wall for reversible construction.
Background
The reverse construction method of the high-rise building is an important construction method for solving the problem of land resource shortage of high-rise building in dense cities, and the method can be used for performing upper structure construction firstly and then (or synchronously) performing lower basement construction, so that more time is saved for the overall completion time of projects. In the implementation of the reverse construction method high-rise building, pile foundations are firstly constructed on the ground, and steel pipe columns of underground parts are hoisted to serve as vertical supports, so that after the underground soil discharge and the bottom plate are completed, reinforced concrete shear walls of the basement parts are positively constructed. In the traditional reverse working process of the basement, two major problems exist, namely when the number of layers of the upper structure is large, for example, when the number of layers of the upper structure is larger than 15, the reverse working process is poor in lateral resistance because the underground only has steel pipe columns as supports, and before the forward working shear wall of the basement is unfinished, the number of layers of the upper structure is limited, too many floors are not suitable to be built, and the overall finishing progress is slow to a certain extent; and secondly, the basement reinforced concrete wall is positively constructed in the later stage, the connection structure with the steel pipe column is complex, the underground operation is difficult, the implementation construction period is long, and the construction period is often a key node for limiting the whole construction period. Therefore, the shear wall member with better lateral force resistance and adaptability to reverse construction is sought to have great engineering significance.
In super high-rise buildings, as the building height is continuously increased, the cross section size of the reinforced concrete shear wall is gradually increased, so that the effective use area of the building is reduced, the self weight of the structure is increased, and the structural earthquake resistance and foundation are also adversely affected. The shear wall structure with high bearing capacity, ductility and construction efficiency has great significance.
In addition, horizontal effects on a port steel pile wharf, ship collision, sea waves, earthquakes and the like are often solved by applying inclined piles, but the inclined piles are difficult to apply and have long construction period, and meanwhile, the horizontal effects caused by the earthquakes are sometimes not well solved for the inclined piles in a high-intensity area. Therefore, the shear wall with good lateral force resistance, which is constructed in a reversible way, has good engineering significance.
Therefore, aiming at the wide application field, the assembled close-packed steel tube steel plate concrete shear wall capable of reversible construction is very necessary, and has great engineering significance.
Disclosure of Invention
The invention mainly aims to provide an assembled close-packed steel tube steel plate concrete shear wall capable of achieving reversible construction, and the assembled shear wall can solve the problems in the background technology.
In order to achieve the above purpose, the invention provides an assembled close-packed steel tube steel plate concrete shear wall for reversible construction, which comprises: the concrete filled steel tube column, the lug plate, the connecting steel plate, the positioning connecting piece and the cast-in-place concrete; the steel tube concrete columns are uniformly arranged along the length direction of the wall; the lug plate is welded and fixed with the steel tube concrete column; the connecting steel plates are arranged between adjacent steel tube concrete columns along the length direction parallel to the wall, and form a concrete cavity; the connecting steel plate and the lug plate are respectively reserved with a through hole of a positioning connecting piece, and the positioning connecting piece is inserted into the through holes; and the cast-in-place concrete is filled in a concrete cavity between the inside of the steel tube concrete column and the connecting steel plate.
Further, the positioning connecting piece comprises a plurality of unilateral bolts and a plurality of opposite-pulling screws which are perpendicular to the wall body; the unilateral bolt is fixedly connected with the lug plate and the connecting steel plate; the opposite-pull screw is fixedly connected with the connecting steel plate at the parallel position.
Furthermore, the connecting steel plate is a rectangular flat steel plate for building and is provided with three rows of through holes for installing positioning connecting pieces, wherein the middle row is a through hole for a counter-pulling screw rod, and the two sides are through holes for single-side bolts; the vertical distance between the connecting steel plates is larger than the vertical distance of the lug plates and smaller than the diameter of the concrete filled steel tubular column; the shape, size and position of the through holes of all the connecting steel plates are kept consistent.
Further, the tensile strength of the opposite-pulling screw is larger than the maximum lateral pressure of the cast-in-place concrete to the connecting steel plate; the central axis of the opposite-pulling screw rod is collinear with the central axis of the connecting steel plate.
Further, the unilateral bolt comprises a high-strength bolt, a fixed nut and a first diameter-adding gasket; the high-strength bolt sequentially penetrates through the lug plate and the connecting steel plate from the inside of the wall body and is installed in an adaptive mode with the fixing nut, and the diameter-increasing gasket I is installed between the root of the high-strength bolt and the surface of the connecting steel plate.
Further, the opposite-pulling screw comprises a screw rod, a screw cap and a diameter-adding gasket II; the screw rod sequentially penetrates through the one side connecting steel plate, the concrete cavity and the other side connecting steel plate and is installed in an adaptive manner with the screw cap; and the diameter-adding gasket II is arranged between the root of the screw rod and the surface of the connecting steel plate.
Further, the strength grade of the cast-in-situ concrete is not lower than that of ordinary concrete, high-strength concrete and recycled concrete of C30, and the strength of cast-in-situ concrete in the steel tube concrete column is not lower than that of cast-in-situ concrete between connecting steel plates.
Further, the strength grade of the concrete filled steel tube column, the lug plate and the connecting steel plate is not lower than Q235, and the strength of the unilateral bolt and the opposite-pulling screw rod is not lower than 8.8.
Further, the diameter-thickness ratio of the steel tube concrete columns is not lower than 15 and not higher than 70, and the ratio of the clear distance between adjacent steel tube concrete columns to the thickness of the wall body is not lower than 0.125 and not higher than 2.5.
Further, the concrete filled steel tube columns are arranged in a straight shape, a T shape, an L shape, a ten shape or a C shape.
The invention has the beneficial effects that:
1. the assembled close-packed steel tube and steel plate concrete shear wall capable of being constructed in a reversible manner can fully exert the constraint effect of the steel tube concrete column and the connecting steel plate on cast-in-place concrete, effectively enhance the strength and the deformability of cast-in-place concrete, and greatly improve the vertical bearing capacity and the ductility of the wall; under the same bearing capacity, the section of the shear wall is made thinner, the occupied building space is smaller, and the advantage is more obvious in super high-rise buildings.
2. Most of steel material components can be prefabricated and assembled in factories, and only part of connection operation of positioning connectors and cast-in-place concrete pouring operation are needed on site, so that on-site construction procedures are greatly simplified, and construction progress is quickened. The construction process does not need to be used as a template, binding of reinforcing steel bars is not needed, slurry leakage is avoided, and the aims of economy, safety, environment friendliness and cost saving are achieved;
3. the assembled close-packed steel tube and steel plate concrete shear wall has flexible and changeable combined section, can be designed into a straight-shaped, L-shaped, T-shaped, C-shaped and other arrangement forms according to actual needs, can also adjust the spacing of steel tubes according to stress needs, and is intended to meet more functional needs.
4. The invention is applied to the reverse construction of high-rise buildings, can provide larger horizontal resistance for underground structures, resists the problem of overlarge deformation of the whole structure caused by more forward layers of the upper structure, can enable the number of layers of the reverse construction to be more than the prior art, can greatly shorten the total construction period of engineering construction, obviously reduce the technical difficulties of supporting the formwork, positioning the vertical supporting members, underwater operation and the like, and has good social and economic benefits.
Drawings
FIG. 1 is an isometric view of an example embodiment of the invention;
FIG. 2 is a top view of an embodiment of the structure of the present invention;
FIG. 3 is a front view of an embodiment of the present invention;
FIG. 4 is a schematic view of a single-sided bolt of the present invention;
FIG. 5 is a schematic drawing of a split screw connection;
FIG. 6 is a schematic view of an "L" shaped wall formed by a concrete filled steel tubular column in an embodiment of the invention;
FIG. 7 is a schematic view of a "T" shaped wall formed by a concrete filled steel tubular column in an embodiment of the invention;
FIG. 8 is a schematic view of a "ten" wall formed by concrete filled steel tubular columns in an embodiment of the invention;
FIG. 9 is a schematic view of a "C" shaped wall formed by a concrete filled steel tubular column in an embodiment of the invention;
FIG. 10 is a schematic illustration of a construction process for constructing a basement using reverse construction in accordance with an embodiment of the invention;
FIG. 11 is a plan view of an ultra-high rise building constructed using an embodiment of the present invention;
fig. 12 is a schematic cross-sectional view of a high pile pier constructed using an embodiment of the present invention.
The concrete filled steel tube pile comprises a 1-concrete filled steel tube column, a 2-lug plate, a 3-connecting steel plate, a 4-positioning connecting piece, 5-cast-in-place concrete, a 41-unilateral bolt, a 411-high-strength bolt, a 412-fixing nut, a 413-diameter-adding gasket I, a 42-opposite-pulling screw, a 421-screw, a 422-screw cap, a 423-diameter-adding gasket II, a 6-filling pile foundation, a 7-underground continuous wall, an 8-first-layer beam plate structure, a 9-underground soil layer, a 10-negative first-layer floor slab, a 11-basement bottom plate, a 12-upper shear wall, a 13-upper frame column, a 14-high-rise building outer frame column and a 15-high pile wharf platform.
Detailed Description
In order to achieve the above objects and effects, the present invention adopts the technical means and structure, and the features and functions of the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the present invention aims to provide an assembled close-packed steel tube steel plate concrete shear wall for reversible construction, comprising: the concrete filled steel tube column 1, the lug plate 2, the connecting steel plate 3, the positioning connecting piece 4 and the cast-in-place concrete 5; the concrete filled steel tube columns 1 are uniformly arranged along the length direction of the wall; the lug plate 2 is welded and fixed with the concrete filled steel tube column 1; the connecting steel plates 3 are arranged between the adjacent steel tube concrete columns 1 along the length direction parallel to the wall, and form a concrete cavity; the connecting steel plate 3 and the lug plate 2 are respectively reserved with a through hole of a positioning connecting piece 4, and the positioning connecting piece 4 is inserted into the through holes; and the cast-in-place concrete 5 is filled in a concrete cavity between the inside of the steel tube concrete column 1 and the connecting steel plate 3. The steel pipe concrete column 1 adopts round steel pipes, and the number of the round steel pipes is not less than two.
The positioning connecting piece 4 comprises a plurality of unilateral bolts 41 and a plurality of opposite-pulling screws 42 which are perpendicular to the wall body direction; the unilateral bolt 41 is fixedly connected with the lug plate 2 and the connecting steel plate 3; the opposite-pulling screw rod 42 is fixedly connected with the connecting steel plate 3 at the parallel position.
The connecting steel plate 3 is a rectangular flat steel plate for building and is provided with three rows of through holes for installing the positioning connecting piece 4, wherein the middle row is a through hole of a counter-pulling screw rod 42, and the two sides are through holes of single-side bolts 41; the vertical distance between the connecting steel plates 3 is larger than the vertical distance of the lug plates 2 and smaller than the diameter of the concrete filled steel tubular column 1; the shape, size and position of the through holes of all the connection steel plates 3 are kept uniform.
In this embodiment, the tensile strength of the split screw 42 is greater than the maximum lateral pressure of the cast-in-place concrete to the connecting steel plate 3; the central axis of the opposite-pulling screw 42 is collinear with the central axis of the connecting steel plate 3.
The unilateral bolt comprises a high-strength bolt 411, a fixed nut 412 and a first diameter-adding gasket 413; the high-strength bolt 411 sequentially passes through the lug plate 2 and the connecting steel plate 3 from the inside of the wall body and is installed in an adaptive manner with the fixing nut 412, and the diameter-adding gasket I413 is installed between the root of the high-strength bolt 411 and the surface of the connecting steel plate 3.
The opposite-pulling screw 421 comprises a screw 421, a screw cap 422 and a second diameter-adding gasket 423; the screw 421 sequentially passes through the one-side connecting steel plate 3, the concrete cavity and the other-side connecting steel plate 3, and is installed in an adaptive manner with the screw cap 422; the second diameter-adding gasket 423 is installed between the root of the screw 421 and the surface of the connecting steel plate 3. The split screws 421 may also be replaced with pegs, baffles, web members, etc.
The steel tube concrete column 1 is a circular steel tube comprising an end column and a middle column; only one side of the end post is provided with an ear plate 2; the middle column is provided with ear plates 2 on both sides. The lug plate 2 is provided with a through hole, and the position of the through hole is consistent with that of the through hole on one side of the connecting steel plate 3.
In this embodiment, the strength grade of the cast-in-place concrete 5 is not lower than that of the ordinary concrete, the high-strength concrete and the recycled concrete of C30, and the strength of the cast-in-place concrete 5 in the steel tube concrete column 1 is not lower than that of the cast-in-place concrete 5 between the connecting steel plates 3.
In this embodiment, the strength level of the concrete filled steel tube column 1, the lug plate 2 and the connecting steel plate 3 is not lower than Q235, and the strength of the single-sided bolts 41 and the counter screws 42 is not lower than 8.8.
In this embodiment, the diameter-thickness ratio of the steel tube concrete columns 1 is not lower than 15 and not higher than 70, and the ratio of the clear distance between adjacent steel tube concrete columns 1 to the wall thickness (the wall clear thickness ratio) is not less than 0.125 and not more than 2.5.
Referring to fig. 6 to 9, the concrete filled steel tubular columns 1 are arranged in a straight shape, a T shape, an L shape, a ten shape, a C shape or the like. The assembled close-packed steel tube concrete shear wall can change the connection position of the steel tube concrete column 1 according to actual needs, is designed into an arrangement form such as an L-shaped form, a T-shaped form, a ten-shaped form, a C-shaped form and the like, and forms the shear wall with various shapes such as an L-shaped form, a T-shaped form, a ten-shaped form, a C-shaped form and the like.
Fig. 10 (a), 10 (b) and 10 (c) are schematic views of a construction process for constructing a basement by using a reverse construction method according to the present invention, wherein the construction process of the basement is as follows: the intermediate support cast-in-place pile foundation 6 is firstly laid along the position of the building basement support column, the steel tube concrete column 1 is hoisted, and after the pile is formed into strength, the underground diaphragm wall 7 and the first floor slab structure 8 are constructed, as shown in fig. 10 (a). Then the upper structure starts to work upwards, the basement starts to excavate the underground soil layer 9, when the underground soil layer 9 is excavated into the negative two layers, the construction of the negative first layer floor slab 10 is started, after the construction of the negative first layer floor slab 10, the installation of the connecting steel plates 3 between the closely arranged steel pipes is started, at the moment, the upper shear wall 12 of the negative first layer horizontal force closely arranged steel pipes is formed, and the upper shear wall is positioned on one side of the upper frame column 13, and has better side resistance, as shown in fig. 10 (b). The upper structure is continuously constructed upwards, the underground structure is continuously unearthed to the bottom side of the basement bottom plate 11, the basement bottom plate structure and the negative two-layer floor slab are constructed, then the connecting steel plates 3 between the negative two-layer and negative three-layer closely arranged steel pipes are installed, at the moment, the upper shearing wall 12 of the negative two-layer and negative three-layer horizontal force resisting closely arranged steel pipes of the underground layer is formed, the side resisting capability is good, and in fig. 10 (c), the horizontal effect caused by wind or earthquake in the construction stage of the upper structure can be effectively resisted, normally, the upper structure can be completed to 20-30 layers, and the project development time cost is greatly saved.
As shown in fig. 11 (a) and 11 (b), in the plan layout of the super high-rise building constructed by the embodiment of the invention, the shear wall is composed of more closely-arranged steel tube concrete columns 1, and the steel tube concrete columns 1 have better hoop function, so that the vertical bearing capacity is better improved than that of the same square, and the section of the upper shear wall can be smaller under the same stress condition, so that the use space is more. The super high-rise construction process of the super high-rise structure is as follows: the construction process of the closely-arranged steel tube concrete columns 1 in the outer frame column 14 of the high-rise building and the core tube of the upper shear wall is faster than that of a floor slab by 6-7 layers, the connecting steel plates 3 between the closely-arranged steel tube concrete columns 1 can be constructed later by 3-4 layers faster than that of the floor slab, three flow working surfaces of the construction of the steel tube concrete columns 1, the construction of the connecting steel plates 3 and the construction of the floor slab are formed, and the three flow working surfaces are not interfered with each other; when concrete is poured and rammed, the formwork is not needed to be supported, and the formwork system is also greatly saved.
Fig. 12 (a) and 12 (b) are schematic cross-sectional views of a high pile wharf constructed according to an embodiment of the present invention. The construction procedure of the high pile wharf structure is as follows: the construction of the concrete filled steel tube column 1 is firstly carried out, then the connecting steel plate 3 is assembled, the side force resisting wall body can be composed of two concrete filled steel tube columns according to requirements, and also can be composed of a plurality of concrete filled steel tube columns, so that a better side force resisting wall body is formed, and finally, the upper high pile wharf platform 15 is constructed, thus the construction of the inclined concrete filled steel tube column 1 can be avoided, and the construction speed is greatly improved.
The assembled close-packed steel tube and steel plate concrete shear wall capable of being constructed in a reversible manner can fully exert the constraint effect of the steel tube concrete column and the connecting steel plate on cast-in-place concrete, effectively enhance the strength and the deformability of cast-in-place concrete and greatly improve the plasticity and the toughness; and the cast-in-place concrete has an effective supporting effect on the steel pipe concrete column and the connecting steel plate, and the vertical bearing capacity of the structure is also improved to a great extent.
Most of steel material components can be prefabricated and assembled in factories, and only part of connection operation of positioning connectors and cast-in-place concrete pouring operation are needed on site, so that on-site construction procedures are greatly simplified, and construction progress is quickened. The construction process does not need to be used as a template, binding of reinforcing steel bars is not needed, slurry leakage is avoided, and the aims of economy, safety, environment friendliness and cost saving are achieved;
the invention adopts the reverse construction method to construct, can greatly shorten the total construction period of engineering, obviously reduce the technical difficulty of horizontal support formwork, vertical support member positioning and underwater operation, reduce foundation pit deformation and settlement of adjacent buildings, save support of a protection structure and the like, and has good social and economic benefits.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a reversible assembled closely packed steel pipe steel sheet concrete shear force wall of doing construction which characterized in that includes: the concrete filled steel tube column, the lug plate, the connecting steel plate, the positioning connecting piece and the cast-in-place concrete; the steel tube concrete columns are uniformly arranged along the length direction of the wall; the lug plate is welded and fixed with the steel tube concrete column; the connecting steel plates are arranged between adjacent steel tube concrete columns along the length direction parallel to the wall, and form a concrete cavity; the connecting steel plate and the lug plate are respectively reserved with a through hole of a positioning connecting piece, and the positioning connecting piece is inserted into the through holes; and the cast-in-place concrete is filled in a concrete cavity between the inside of the steel tube concrete column and the connecting steel plate.
2. The assembled close-packed steel tube and steel plate concrete shear wall capable of being constructed in a reversible manner according to claim 1, wherein the positioning connecting piece comprises a plurality of unilateral bolts and a plurality of pairs of pull screws which are perpendicular to the wall body; the unilateral bolt is fixedly connected with the lug plate and the connecting steel plate; the opposite-pull screw is fixedly connected with the connecting steel plate at the parallel position.
3. The assembled close-packed steel tube and steel plate concrete shear wall capable of being constructed in a reversible manner, as claimed in claim 2, is characterized in that the connecting steel plates are rectangular flat steel plates for construction and are provided with three rows of through holes for installing positioning connecting pieces, wherein the middle row is a through hole for a counter-pulling screw rod, and the two sides are through holes for unilateral bolts; the vertical distance between the connecting steel plates is larger than the vertical distance of the lug plates and smaller than the diameter of the concrete filled steel tubular column; the shape, size and position of the through holes of all the connecting steel plates are kept consistent.
4. A fabricated close-packed steel tube and steel plate concrete shear wall for reversible construction according to claim 3, wherein the tensile strength of the split screws is greater than the maximum lateral pressure of the cast-in-place concrete to the connecting steel plates; the central axis of the opposite-pulling screw rod is collinear with the central axis of the connecting steel plate.
5. The assembled close-packed steel tube and steel plate concrete shear wall of the reversible construction of claim 3, wherein the unilateral bolt comprises a high-strength bolt, a fixed nut and a radial gasket I; the high-strength bolt sequentially penetrates through the lug plate and the connecting steel plate from the inside of the wall body and is installed in an adaptive mode with the fixing nut, and the diameter-increasing gasket I is installed between the root of the high-strength bolt and the surface of the connecting steel plate.
6. The assembled close-packed steel tube and steel plate concrete shear wall for reversible construction according to claim 3, wherein the opposite-pulling screw comprises a screw, a screw cap and a diameter-adding gasket II; the screw rod sequentially penetrates through the one side connecting steel plate, the concrete cavity and the other side connecting steel plate and is installed in an adaptive manner with the screw cap; and the diameter-adding gasket II is arranged between the root of the screw rod and the surface of the connecting steel plate.
7. The assembled close-packed steel tube and steel plate concrete shear wall for reversible construction according to claim 1, wherein the strength grade of the cast-in-situ concrete is not lower than that of ordinary concrete, high-strength concrete and recycled concrete of C30, and the strength of cast-in-situ concrete in the steel tube concrete column is not lower than that of cast-in-situ concrete between connecting steel plates.
8. The assembled close-packed steel tube and steel plate concrete shear wall for reversible construction according to claim 1, wherein the steel tube concrete column, the lug plate and the connecting steel plate have strength grades not lower than Q235, and the single-side bolts and the opposite-pull screws have strength grades not lower than 8.8.
9. The assembled close-packed steel tube concrete shear wall of claim 1, wherein the steel tube concrete column diameter-thickness ratio is not less than 15 and not more than 70, and the ratio of the clear distance between adjacent steel tube concrete columns to the wall thickness is not less than 0.125 and not more than 2.5.
10. The assembled close-packed steel tube concrete shear wall of claim 1, wherein the steel tube concrete columns are arranged in a straight, T, L, ten or C shape.
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| CN202211709121.4A CN116005844A (en) | 2022-12-29 | 2022-12-29 | Assembled close-packed steel tube steel plate concrete shear wall capable of being constructed in reversible mode |
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| CN202211709121.4A CN116005844A (en) | 2022-12-29 | 2022-12-29 | Assembled close-packed steel tube steel plate concrete shear wall capable of being constructed in reversible mode |
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| CN102127941A (en) * | 2010-12-10 | 2011-07-20 | 清华大学 | Steel tube concrete column-double-layer steel plate combined shear wall and construction method thereof |
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| US20200095762A1 (en) * | 2018-07-24 | 2020-03-26 | Chunwei Zhang | Assembled double steel-concrete composite shear wall embedded with damping interlayer and method for mounting same |
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