CN103015311B - SCS concrete filled steel tube pier reinforced by stirrup and stiffening rib at end - Google Patents
SCS concrete filled steel tube pier reinforced by stirrup and stiffening rib at end Download PDFInfo
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- CN103015311B CN103015311B CN201210580301.7A CN201210580301A CN103015311B CN 103015311 B CN103015311 B CN 103015311B CN 201210580301 A CN201210580301 A CN 201210580301A CN 103015311 B CN103015311 B CN 103015311B
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Abstract
The invention discloses an SCS concrete filled steel tube pier reinforced by a stirrup and a stiffening rib at an end, which comprises an outer steel tube, an inner steel tube sleeved in the outer sleeve tube, a top reinforcing structure, a bottom reinforcing structure and a concrete structured poured and formed by concrete in a cavity between the outer and inner steel tubes. The inner steel tube is circular. The inner and outer steel tubes are coaxially arranged. The top reinforcing structure comprises a plurality of PBL stiffening ribs I and a stirrup I arranged from top to bottom. The bottom reinforcing structure comprises a plurality of PBL stiffening ribs II and a stirrup II arranged from top to bottom. The transverse width of each PBL stiffening rib I and each PBL stiffening rib II is smaller than the distance between the outer and inner steel tubes arranged at the position. The SCS concrete filled steel tube pier reinforced by the stirrup and the stiffening rib at the end is simple in structure, reasonable in design, convenient to construct, lower in construction cost, excellent in mechanical performance and good in using effect, and various problems of current concrete filled steel tube piers can be effectively solved.
Description
Technical field
The present invention relates to a kind of concrete pier of steel tube, especially relate to a kind of end based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib.
Background technology
Concrete filled steel tube refers to the structure formed after fill concrete in steel pipe.Steel and concrete bi-material make up weakness each other mutually, give full play to strong point each other, make concrete filled steel tube have very high bearing capacity, have excellent mechanical property.Nowadays, encased structures ocean platform with greatly across structures such as, heavy duty, light bridges in an increasingly wide range of applications, and the encased structures adopted mainly contains circle, square and rectangle three kinds of section forms.But the defect that current used encased structures ubiquity dead load is large, thus greatly limit the development and application of encased structures.
Lay perforate stiffening rib (being called for short PBL stiffening rib) in steel pipe after, not only increase the compressive strength of core concrete, enhance the stability of steel pipe tube wall; The stiffening rib of perforate simultaneously act as the effect of shear key, makes steel pipe and concrete be linked to be entirety, improves the compound action of Steel concrete.But during actual use, there is direct relation the morning and evening of steel pipe flexing with the rigidity of PBL stiffening rib, thus wayward, and the deadweight of the concrete pier of steel tube of institute's construction molding is very large.
In addition, owing to standing dynamic loading throughout the year, have the greatest impact suffered by the top of bridge pier and bottom, the cripling of steel pipe very easily occurs, finally cause the destruction of bridge pier structure.And the middle part stability of bridge pier structure is better, not easily there is cripling.
To sum up, corresponding improvement need be carried out to the structure of nowadays adopted concrete pier of steel tube.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, there is provided a kind of end based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, its structure is simple, reasonable in design, easy construction and construction cost is lower, good mechanical performance, result of use are good, effectively can solve that existing concrete pier of steel tube exists poor from great, between outside steel pipe and its inner concrete switching performance, outside steel pipe is little to the concrete Confinement effect in inside, upper and lower end parts easily the problems such as curvature occurs.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of end is based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: comprise outer steel pipe, be set in the interior steel pipe of outer steel duct, be laid in the top reinforcing structure between outer steel pipe top and interior steel pipe top, be laid in bottom reinforcing structure between outer steel pipe bottom and interior steel pipe bottom and after described top reinforcing structure and described bottom reinforcing structure have all been laid by the concrete structure that the concreting be filled between outer steel pipe and interior steel pipe in cavity is shaping, described interior steel pipe is round steel pipe and it is laid in the middle inside of outer steel pipe, described outer steel pipe and interior steel pipe are laid in coaxial, described top reinforcing structure comprises multiple tracks PBL stiffening rib one, and described bottom reinforcing structure comprises multiple tracks PBL stiffening rib two, PBL stiffening rib one described in multiple tracks is all consistent with the central axial direction of described interior steel pipe and outer steel pipe with the cloth set direction of PBL stiffening rib two described in multiple tracks, and PBL stiffening rib two described in PBL stiffening rib one described in multiple tracks and multiple tracks is all fastenedly connected with concrete structure and is integrated, described in PBL stiffening rib one described in multiple tracks and multiple tracks, PBL stiffening rib two is strip steel floor, and described in PBL stiffening rib one described in multiple tracks and multiple tracks, the inside wall of PBL stiffening rib two is all fastened and fixed on the inside wall of steel pipe outside, described in PBL stiffening rib one described in multiple tracks and multiple tracks, PBL stiffening rib two is all laid along the circumferencial direction of interior steel pipe, described outer steel pipe is all identical with the longitudinal length of interior steel pipe, and the top end face of described outer steel pipe is mutually concordant with the top end face of interior steel pipe, and the bottom face of described outer steel pipe is mutually concordant with the bottom face of interior steel pipe, described in multiple tracks, the top end face of PBL stiffening rib one is all mutually concordant with the top end face of interior steel pipe, and the bottom face of PBL stiffening rib two described in multiple tracks is all mutually concordant with the bottom face of interior steel pipe, the transverse width of every described PBL stiffening rib one together, to be outside its installation position place spacing between steel pipe and interior steel pipe
and the transverse width of every described PBL stiffening rib two together, to be outside its installation position place spacing between steel pipe and interior steel pipe
The middle part of every described PBL stiffening rib one together has multiple through hole one all from top to bottom, and multiple described through hole one is laid on the same line; The middle part of every described PBL stiffening rib two together has multiple through hole two all from top to bottom, and multiple described through hole two is laid on the same line; On PBL stiffening rib one described in multiple tracks to offer the quantity of through hole one all identical with the installation position of each through hole one; On PBL stiffening rib two described in multiple tracks to offer the quantity of through hole two all identical with the installation position of each through hole two; Described top reinforcing structure also comprises multiple tracks and is laid in stirrup one on PBL stiffening rib one described in multiple tracks from top to bottom, described in multiple tracks, stirrup one is in parallel laying, the quantity of stirrup one described in multiple tracks is identical with the quantity of multiple described through hole one, and passes in the multiple described through hole one opened on every described PBL stiffening rib one together respectively of stirrup one described in multiple tracks; Described bottom reinforcing structure also comprises multiple tracks and is laid in stirrup two on PBL stiffening rib two described in multiple tracks from top to bottom, described in multiple tracks, stirrup two is in parallel laying, the quantity of stirrup two described in multiple tracks is identical with the quantity of multiple described through hole two, and passes in the multiple described through hole two opened on every described PBL stiffening rib two together respectively of stirrup two described in multiple tracks.
Above-mentioned end, based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, is characterized in that: described in PBL stiffening rib one described in multiple tracks and multiple tracks, PBL stiffening rib two is all evenly laid along the circumferencial direction of interior steel pipe.
Above-mentioned end is based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: the external diameter of described interior steel pipe is Φ 102mm ~ Φ 2000mm, the wall thickness of described outer steel pipe and interior steel pipe is 4mm ~ 66mm, and A1 ︰ A2=1 ︰ (0.6 ~ 0.8), wherein A1=a1+b1, a1 is the cross-sectional area of outer steel pipe and b1 is the cross-sectional area of hollow bulb inside outer steel pipe, A2=π r
2and r is the external diameter of interior steel pipe.
Above-mentioned end is based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: PBL stiffening rib one described in multiple tracks is all identical with the quantity of PBL stiffening rib two described in multiple tracks, and described in multiple tracks, PBL stiffening rib two is laid in immediately below PBL stiffening rib one described in multiple tracks respectively.
Above-mentioned end, based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, is characterized in that: the cross section of described outer steel pipe is circle, rectangle or regular polygon.
Above-mentioned end, based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, is characterized in that: described in PBL stiffening rib one described in multiple tracks and multiple tracks, the thickness of PBL stiffening rib two is d1, and wherein d1≤D, D are the wall thickness of outer steel pipe; The wall thickness of described outer steel pipe is larger, and described in PBL stiffening rib one described in multiple tracks and multiple tracks, the thickness of PBL stiffening rib two is all larger.
Above-mentioned end, based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, is characterized in that: described through hole one is circular port one, and the aperture of described circular port one
the wherein transverse width of d3 PBL stiffening rib one residing for described circular port one; Described through hole two is circular port two, and the aperture of described circular port two
the wherein transverse width of d5 PBL stiffening rib two residing for described circular port two.
Above-mentioned end, based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, is characterized in that: the longitudinal length of PBL stiffening rib one described in multiple tracks is all identical and its longitudinal length is 1m ~ 1.5m; The longitudinal length of PBL stiffening rib two described in multiple tracks is all identical and its longitudinal length is 1m ~ 1.5m.
Above-mentioned end, based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, is characterized in that: described in PBL stiffening rib one described in multiple tracks and multiple tracks, the quantity of PBL stiffening rib two is 4 roads, road ~ 8.
Above-mentioned end, based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, is characterized in that: described concrete structure is carbon fiber reinforced concrete.
The present invention compared with prior art has the following advantages:
1, structure is simple, reasonable in design and construction cost is lower.
2, the slim and graceful and antidetonation of structure and torsional property good.
3, easy construction and result of use is good, the mechanical property of the SCS steel tube concrete column construction part of institute's construction molding is good and structure slim and graceful, passes through poured into a mould concrete and connect into as a whole between inside and outside two-layer steel pipe.During actual use, the present invention can substantially improve encased structures from the defect such as great, it utilizes the larger sectional area of outer steel pipe to provide larger cross section antitorque with bending resistance moment of inertia, in utilizing, steel pipe effectively reduces volume of concrete to alleviate deadweight, and sandwich concrete is in three dimension stress state and outer and inner tube is linked to be entirety.Thus, the present invention can give full play to the form that Concrete-filled tubular connections has simple, be easy to the advantages such as construction, the relative inertness square in cross section is larger, antidetonation, torsional property are good, effectively can overcome that switching performance between steel pipe and its inner concrete is poor, outside steel pipe is to shortcomings such as the concrete Confinement effect in inside are little, the present invention utilizes built-in round steel pipe to strengthen concrete Confinement effect, and in utilizing, the effective volume of concrete of steel pipe alleviates the object of deadweight.
4, the concrete poured into a mould between outer and inner tube both can adopt ordinary concrete, also can adopt carbon fiber reinforced concrete.Further, in the carbon fiber reinforced concrete adopted add carbon fiber content be mass percentage about 0.6%, concrete tensile strength and tension ductility can be improved 30% and 25% respectively.Carbon fiber is formed through the cutting of chopping machine tool by carbon fiber filament, length is generally in units of mm, profile is that the suede of certain length must, there is lightweight, high-strength, Gao Mo, corrosion-resistant, conduction, advantages of good shielding performance, wave absorbtion high, and have and be uniformly dispersed, feeding manner is various, the simple advantage of technique.Add appropriate chopped carbon fiber in concrete, concrete tensile strength, anti-intensity and shock resistance can be improved, reduce drying shrinkage, improve anti-wear performance, and this concrete comparatively ordinary concrete quality is light, there is certain heat-proof quality and damping performance.With all fill up compared with concrete encased structures in interior steel duct and the space that formed between interior steel pipe with outer steel pipe, the present invention can make full use of the intensity of built-in round steel pipe.
5, perforate stiffening rib is utilized to strengthen the lateral stability of outer steel pipe in the upper and lower end parts of bridge pier, and corresponding significantly enhancing structure shear resistance, each ingredient of whole concrete pier of steel tube is closely linked to be entirety simultaneously.Coordinate multiple tracks stirrup again, connect as one organic for multiple tracks perforate stiffening rib, further enhancing the globality of whole concrete pier of steel tube upper and lower end parts.Set perforate stiffening rib not only increases the compressive strength of core concrete, strengthens the stability of tube wall; The stiffening rib of perforate simultaneously act as the effect of shear key, makes steel pipe and concrete be linked to be entirety, improves the compound action of Steel concrete.Further, of the present invention workable, the uppity difficult problem that the curvature time that effectively can solve nowadays steel pipe causes because having relation with perforate stiffening rib rigidity.In actual use procedure, under the dual distortion of PBL stiffening rib and stirrup, not easily there is the curvature of outer steel pipe, increased substantially the application life of bridge pier in upper and lower end parts of the present utility model, and safety and firmness.
In sum, structure of the present invention is simple, reasonable in design, easy construction and construction cost is lower, good mechanical performance, result of use are good, effectively can solve that existing concrete pier of steel tube exists poor from great, between outside steel pipe and its inner concrete switching performance, outside steel pipe is little to the concrete Confinement effect in inside, upper and lower end parts easily the various problems such as curvature occurs.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the internal construction schematic diagram of the embodiment of the present invention 1.
Fig. 3 is the top structure schematic diagram of the embodiment of the present invention 1.
Fig. 4 is the structural representation of the embodiment of the present invention 2.
Fig. 5 is the structural representation of the embodiment of the present invention 3.
Fig. 6 is the structural representation of the embodiment of the present invention 4.
Fig. 7 is the structural representation of the embodiment of the present invention 5.
Fig. 8 is the structural representation of the embodiment of the present invention 6.
Fig. 9 is the structural representation of the embodiment of the present invention 7.
Description of reference numerals:
1-outer steel pipe; 2-interior steel pipe; 3-1-PBL stiffening rib one;
3-2-PBL stiffening rib two; 4-concrete structure; 5-1-through hole one;
5-2-through hole two; 6-1-stirrup one; 6-2-stirrup two.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes outer steel pipe 1, be set in the interior steel pipe 2 of outer steel pipe 1 inside, be laid in top reinforcing structure between outer steel pipe 1 top and interior steel pipe 2 top, be laid in bottom reinforcing structure between outer steel pipe 1 bottom and interior steel pipe 2 bottom and after described top reinforcing structure and described bottom reinforcing structure have all been laid by the concrete structure 4 that the concreting be filled between outer steel pipe 1 and interior steel pipe 2 in cavity is shaping, described interior steel pipe 2 is round steel pipe and it is laid in the middle inside of outer steel pipe 1.Described outer steel pipe 1 and interior steel pipe 2 are laid in coaxial.Described top reinforcing structure comprises multiple tracks PBL stiffening rib one 3-1, and described bottom reinforcing structure comprises multiple tracks PBL stiffening rib two 3-2, PBL stiffening rib one 3-1 described in multiple tracks is all consistent with the central axial direction of described interior steel pipe 2 and outer steel pipe 1 with the cloth set direction of PBL stiffening rib two 3-2 described in multiple tracks, and PBL stiffening rib two 3-2 described in PBL stiffening rib one 3-1 described in multiple tracks and multiple tracks is all fastenedly connected with concrete structure 4 and is integrated.Described in PBL stiffening rib one 3-1 described in multiple tracks and multiple tracks, PBL stiffening rib two 3-2 is strip steel floor, and described in PBL stiffening rib one 3-1 described in multiple tracks and multiple tracks, the inside wall of PBL stiffening rib two 3-2 is all fastened and fixed on the inside wall of steel pipe 1 outside.Described in PBL stiffening rib one 3-1 described in multiple tracks and multiple tracks, PBL stiffening rib two 3-2 all lays along the circumferencial direction of interior steel pipe 2.Described outer steel pipe 1 is all identical with the longitudinal length of interior steel pipe 2, and the top end face of described outer steel pipe 1 is mutually concordant with the top end face of interior steel pipe 2, and the bottom face of described outer steel pipe 1 is mutually concordant with the bottom face of interior steel pipe 2.Described in multiple tracks, the top end face of PBL stiffening rib one 3-1 is all mutually concordant with the top end face of interior steel pipe 2, and the bottom face of PBL stiffening rib two 3-2 described in multiple tracks is all mutually concordant with the bottom face of interior steel pipe 2.The transverse width of every described PBL stiffening rib one 3-1 together, to be outside its installation position place spacing between steel pipe 1 and interior steel pipe 2
and the transverse width of every described PBL stiffening rib two 3-2 together, to be outside its installation position place spacing between steel pipe 1 and interior steel pipe 2
The middle part of every described PBL stiffening rib one 3-1 together has multiple through hole one 5-1 all from top to bottom, and multiple described through hole one 5-1 lays on the same line; The middle part of every described PBL stiffening rib two 3-2 together has multiple through hole two 5-2 all from top to bottom, and multiple described through hole two 5-2 lays on the same line.On PBL stiffening rib one 3-1 described in multiple tracks to offer the quantity of through hole one 5-1 all identical with the installation position of each through hole one 5-1.On PBL stiffening rib two 3-2 described in multiple tracks to offer the quantity of through hole two 5-2 all identical with the installation position of each through hole two 5-2.Described top reinforcing structure also comprises multiple tracks and is laid in stirrup one 6-1 on PBL stiffening rib one 3-1 described in multiple tracks from top to bottom, described in multiple tracks, stirrup one 6-1 is parallel laying, the quantity of stirrup one 6-1 described in multiple tracks is identical with the quantity of multiple described through hole one 5-1, and passes in multiple described through hole one 5-1 that opens on every described PBL stiffening rib one 3-1 together respectively of stirrup one 6-1 described in multiple tracks.Described bottom reinforcing structure also comprises multiple tracks and is laid in stirrup two 6-2 on PBL stiffening rib two 3-2 described in multiple tracks from top to bottom, described in multiple tracks, stirrup two 6-2 is parallel laying, the quantity of stirrup two 6-2 described in multiple tracks is identical with the quantity of multiple described through hole two 5-2, and passes in multiple described through hole two 5-2 that opens on every described PBL stiffening rib two 3-2 together respectively of stirrup two 6-2 described in multiple tracks.
Actually add man-hour, the external diameter of described interior steel pipe 2 is Φ 102mm ~ Φ 2000mm, the wall thickness of described outer steel pipe 1 and interior steel pipe 2 is 4mm ~ 66mm, and A1 ︰ A2=1 ︰ (0.6 ~ 0.8), wherein A1=a1+b1, a1 is the cross-sectional area of outer steel pipe 1 and b1 is the cross-sectional area of hollow bulb inside outer steel pipe 1, A2=π r
2and r is the external diameter of interior steel pipe 2.
In the present embodiment, the external diameter of described interior steel pipe 2 is Φ 200mm and its wall thickness is 15mm.During actual use, according to specific needs, the external diameter of described interior steel pipe 2 can be adjusted accordingly in the scope of Φ 102mm ~ Φ 2000mm, and the wall thickness of interior steel pipe 2 is adjusted accordingly in the scope of 4mm ~ 66mm.
Actually add man-hour, the cross section of described outer steel pipe 1 is circular, rectangle or regular polygon.
In the present embodiment, the cross section of described outer steel pipe 1 is square.
Specifically add man-hour, the cross section of described outer steel pipe 1 also can adopt the shape such as rectangle, circle, other regular polygon.
In the present embodiment, A1 ︰ A2=1 ︰ 0.7.During actual use, can according to specific needs, the ratio value of A1 ︰ A2 be adjusted accordingly in the scope of 1 ︰ (0.6 ~ 0.8).
In the present embodiment, described concrete structure 4 is carbon fiber reinforced concrete.
Actually add man-hour, A1 is preferably 4m
2~ 10m
2, and the wall thickness of described outer steel pipe 1 and interior steel pipe 2 is all preferably 18mm ~ 25mm.
In the present embodiment, A1=D
2=6m
2, wherein D is the lateral wall length of side of described outer steel pipe 1, and the wall thickness of described outer steel pipe 1 is 20mm.Actual when using, can according to specific needs by A1 at 4m
2~ 10m
2scope in adjust accordingly, and the wall thickness of outer steel pipe 1 to be adjusted accordingly in the scope of 4mm ~ 66mm.
During actual processing and fabricating, described in PBL stiffening rib one 3-1 described in multiple tracks and multiple tracks, PBL stiffening rib two 3-2 all evenly lays along the circumferencial direction of interior steel pipe 2.In the present embodiment, PBL stiffening rib one 3-1 described in multiple tracks is all identical with the quantity of PBL stiffening rib two 3-2 described in multiple tracks, and described in multiple tracks, PBL stiffening rib two 3-2 is laid in immediately below PBL stiffening rib one 3-1 described in multiple tracks respectively.
Described in PBL stiffening rib one 3-1 described in multiple tracks and multiple tracks, the quantity of PBL stiffening rib two 3-2 is 4 roads, road ~ 8.
In the present embodiment, described in PBL stiffening rib one 3-1 described in multiple tracks and multiple tracks, the quantity of PBL stiffening rib two 3-2 is 4 roads, and PBL stiffening rib one 3-1 described in 4 roads is separately fixed in the middle part of 4 sidewalls of outer steel pipe 1, PBL stiffening rib two 3-2 described in 4 roads is separately fixed in the middle part of 4 sidewalls of outer steel pipe 1.
During practice of construction, every described PBL stiffening rib one 3-1 together is all fixed on welding manner on the lateral wall of outer steel pipe 1, and every described PBL stiffening rib two 3-2 together is all fixed on welding manner on the lateral wall of outer steel pipe 1.
In the present embodiment, described concrete structure 4 is carbon fiber reinforced concrete.
In the present embodiment, described in PBL stiffening rib one 3-1 described in multiple tracks and multiple tracks, the thickness of PBL stiffening rib two 3-2 is d1, and wherein d1≤D, D are the wall thickness of outer steel pipe 1; The wall thickness of described outer steel pipe 1 is larger, and described in PBL stiffening rib one 3-1 described in multiple tracks and multiple tracks, the thickness of PBL stiffening rib two 3-2 is all larger.
Actually add man-hour, described through hole one 5-1 is circular port one, and the aperture of described circular port one
the wherein transverse width of d3 PBL stiffening rib one 3-1 residing for described circular port one; Described through hole two 5-2 is circular port two, and the aperture of described circular port two
the wherein transverse width of d5 PBL stiffening rib two 3-2 residing for described circular port two.
In the present embodiment, the aperture of described circular port one
and the aperture of described circular port two
During actual processing and fabricating, can according to specific needs, the aperture d2 of described circular port one be existed
scope in adjust accordingly, and the aperture d4 of described circular port two can be existed
scope in adjust accordingly.Meanwhile, can according to specific needs, by the transverse width of every described PBL stiffening rib one 3-1 together spacing between steel pipe 1 and interior steel pipe 2 outside its installation position place
between adjust accordingly; Further, can according to specific needs, by the transverse width of every described PBL stiffening rib two 3-2 together spacing between steel pipe 1 and interior steel pipe 2 outside its installation position place
between adjust accordingly.Meanwhile, can according to specific needs, the quantity of described PBL stiffening rib 3 and described stirrup 6 be adjusted accordingly.
In the present embodiment, the longitudinal length of PBL stiffening rib one 3-1 described in multiple tracks is all identical and its longitudinal length is 1m ~ 1.5m; The longitudinal length of PBL stiffening rib two 3-2 described in multiple tracks is all identical and its longitudinal length is 1m ~ 1.5m.
Actually add man-hour, when the cross section of described outer steel pipe 1 be rectangle or regular polygon time, described in multiple tracks, PBL stiffening rib one 3-1 is laid in the middle part of each sidewall of described outer steel pipe 1 respectively, and described in multiple tracks, PBL stiffening rib two 3-2 is laid in the middle part of each sidewall of described outer steel pipe 1 respectively.
Embodiment 2
As shown in Figure 4, in the present embodiment, as different from Example 1: the cross section of described outer steel pipe 1 is circular, and A1 ︰ A2=1 ︰ 0.6, the wall thickness of described outer steel pipe 1 and interior steel pipe 2 is 25mm, A1=π R
2=10m
2, wherein R is the external diameter of outer steel pipe 1.
In the present embodiment, the structure of remainder is all identical with embodiment 1 with annexation.
Embodiment 3
As shown in Figure 5, in the present embodiment, as different from Example 2: the quantity of described PBL stiffening rib one 3-1 and PBL stiffening rib two 3-2 is 6 roads.
In the present embodiment, the structure of remainder is all identical with embodiment 2 with annexation.
Embodiment 4
As shown in Figure 6, in the present embodiment, as different from Example 2: the cross section of described outer steel pipe 1 is positive ten hexagons, and inside outer steel pipe 1, the cross section of hollow bulb is positive ten hexagonal holes, and the cross-sectional area of the cross-sectional area of outer steel pipe 1 described in A1=+described positive ten hexagonal holes; The quantity of described PBL stiffening rib one 3-1 and described PBL stiffening rib two 3-2 is 8 roads, and described in PBL stiffening rib one 3-1 described in 8 roads and 8 roads, PBL stiffening rib two 3-2 is fixed in the middle part of 8 sidewalls of outer steel pipe 1 respectively.
In the present embodiment, the structure of remainder is all identical with embodiment 2 with annexation.
Embodiment 5
As shown in Figure 7, in the present embodiment, as different from Example 1: the cross section of described outer steel pipe 1 is regular hexagon, A1 ︰ A2=1 ︰ 0.8, the wall thickness of described outer steel pipe 1 and interior steel pipe 2 is 25mm, A1=10m
2, inside outer steel pipe 1, the cross section of hollow bulb is regular hexagon hole, and the cross-sectional area in the cross-sectional area of outer steel pipe 1 described in A1=+described regular hexagon hole; The quantity of described PBL stiffening rib one 3-1 and described PBL stiffening rib two 3-2 is 6 roads, and 6 road PBL stiffening rib one 3-1 and described PBL stiffening rib two 3-2 are fixed in the middle part of 6 sidewalls of outer steel pipe 1 respectively.During actual use, the cross section of described outer steel pipe 1 also can be other regular polygon.
In the present embodiment, the structure of remainder is all identical with embodiment 1 with annexation.
Embodiment 6
As shown in Figure 8, in the present embodiment, as different from Example 1: the cross section of described outer steel pipe 1 is octagon, and inside outer steel pipe 1, the cross section of hollow bulb is octagon hole, and the cross-sectional area in the cross-sectional area of outer steel pipe 1 described in A1=+described octagon hole; ; The quantity of described PBL stiffening rib one 3-1 and described PBL stiffening rib two 3-2 is 8 roads, and described in PBL stiffening rib one 3-1 described in 8 roads and 8 roads, PBL stiffening rib two 3-2 is fixed in the middle part of 8 sidewalls of outer steel pipe 1 respectively.
In the present embodiment, the structure of remainder is all identical with embodiment 1 with annexation.
Embodiment 7
As shown in Figure 9, in the present embodiment, as different from Example 9: the quantity of described PBL stiffening rib one 3-1 and described PBL stiffening rib two 3-2 is 4 roads, and PBL stiffening rib two 3-2 described in 4 road PBL stiffening rib one 3-1 and 4 roads be fixed on respectively in the middle part of 4 sidewalls of outer steel pipe 1.
In the present embodiment, the structure of remainder is all identical with embodiment 9 with annexation.
Embodiment 8
In the present embodiment, as different from Example 1: the transverse width of every described PBL stiffening rib one 3-1 together, spacing between steel pipe 1 and interior steel pipe 2 is outside its installation position place
the aperture d2 of described circular port one is
the transverse width of every described PBL stiffening rib two 3-2 together, to be outside its installation position place spacing between steel pipe 1 and interior steel pipe 2
the aperture d4 of described circular port two is
the external diameter of described interior steel pipe 2 is Φ 102mm, and the wall thickness of described outer steel pipe 1 and interior steel pipe 2 is 4mm, A1=4m
2.
In the present embodiment, the structure of remainder is all identical with embodiment 1 with annexation.
Embodiment 9
In the present embodiment, as different from Example 1: the transverse width of every described PBL stiffening rib one 3-1 together, spacing between steel pipe 1 and interior steel pipe 2 is outside its installation position place
the aperture d2 of described circular port one is
the transverse width of every described PBL stiffening rib two 3-2 together, to be outside its installation position place spacing between steel pipe 1 and interior steel pipe 2
the aperture d4 of described circular port two is
the external diameter of described interior steel pipe 2 is Φ 1000mm, and the wall thickness of described outer steel pipe 1 and interior steel pipe 2 is 40mm, A1=8m
2.
In the present embodiment, the structure of remainder is all identical with embodiment 1 with annexation.
Embodiment 10
In the present embodiment, as different from Example 1: the transverse width of every described PBL stiffening rib one 3-1 together, spacing between steel pipe 1 and interior steel pipe 2 is outside its installation position place
the aperture d2 of described circular port one is
the transverse width of every described PBL stiffening rib two 3-2 together, to be outside its installation position place spacing between steel pipe 1 and interior steel pipe 2
the aperture d4 of described circular port two is
the external diameter of described interior steel pipe 2 is Φ 2000mm, and the wall thickness of described outer steel pipe 1 and interior steel pipe 2 is 66mm, A1=10m
2.
In the present embodiment, the structure of remainder is all identical with embodiment 1 with annexation.
Embodiment 11
In the present embodiment, as different from Example 1: the transverse width of every described PBL stiffening rib one 3-1 together, spacing between steel pipe 1 and interior steel pipe 2 is outside its installation position place
the aperture d2 of described circular port one is
the transverse width of every described PBL stiffening rib two 3-2 together, to be outside its installation position place spacing between steel pipe 1 and interior steel pipe 2
the aperture d2 of described circular port two is
the external diameter of described interior steel pipe 2 is Φ 2000mm, and the wall thickness of described outer steel pipe 1 and interior steel pipe 2 is 100mm, A1=10m
2.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (9)
1. an end is based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: comprise outer steel pipe (1), be set in the interior steel pipe (2) that outer steel pipe (1) is inner, be laid in the top reinforcing structure between outer steel pipe (1) top and interior steel pipe (2) top, be laid in bottom reinforcing structure between outer steel pipe (1) bottom and interior steel pipe (2) bottom and after described top reinforcing structure and described bottom reinforcing structure have all been laid by the concrete structure (4) that the concreting be filled between outer steel pipe (1) and interior steel pipe (2) in cavity is shaping, described interior steel pipe (2) is for round steel pipe and it is laid in the middle inside of outer steel pipe (1), described outer steel pipe (1) and interior steel pipe (2) are laid in coaxial, described top reinforcing structure comprises multiple tracks PBL stiffening rib one (3-1), and described bottom reinforcing structure comprises multiple tracks PBL stiffening rib two (3-2), PBL stiffening rib one (3-1) described in multiple tracks is all consistent with the central axial direction of described interior steel pipe (2) and outer steel pipe (1) with the cloth set direction of PBL stiffening rib described in multiple tracks two (3-2), and PBL stiffening rib two (3-2) described in PBL stiffening rib one (3-1) described in multiple tracks and multiple tracks is all fastenedly connected with concrete structure (4) and is integrated, described in PBL stiffening rib one (3-1) described in multiple tracks and multiple tracks, PBL stiffening rib two (3-2) is strip steel floor, and described in PBL stiffening rib one (3-1) described in multiple tracks and multiple tracks, the inside wall of PBL stiffening rib two (3-2) is all fastened and fixed on the inside wall of steel pipe (1) outside, described in PBL stiffening rib one (3-1) described in multiple tracks and multiple tracks, PBL stiffening rib two (3-2) is all laid along the circumferencial direction of interior steel pipe (2), described outer steel pipe (1) is all identical with the longitudinal length of interior steel pipe (2), the top end face of described outer steel pipe (1) is mutually concordant with the top end face of interior steel pipe (2), and the bottom face of described outer steel pipe (1) is mutually concordant with the bottom face of interior steel pipe (2), described in multiple tracks, the top end face of PBL stiffening rib one (3-1) is all mutually concordant with the top end face of interior steel pipe (2), and the bottom face of PBL stiffening rib two (3-2) described in multiple tracks is all mutually concordant with the bottom face of interior steel pipe (2), the transverse width of every described PBL stiffening rib one (3-1) together, to be outside its installation position place spacing between steel pipe (1) and interior steel pipe (2)
and the transverse width of every described PBL stiffening rib two (3-2) together, to be outside its installation position place spacing between steel pipe (1) and interior steel pipe (2)
The middle part of every described PBL stiffening rib one (3-1) together has multiple through hole one (5-1) all from top to bottom, and multiple described through hole one (5-1) is laid on the same line; The middle part of every described PBL stiffening rib two (3-2) together has multiple through hole two (5-2) all from top to bottom, and multiple described through hole two (5-2) is laid on the same line; On PBL stiffening rib one (3-1) described in multiple tracks to offer the quantity of through hole one (5-1) all identical with the installation position of each through hole one (5-1); On PBL stiffening rib two (3-2) described in multiple tracks to offer the quantity of through hole two (5-2) all identical with the installation position of each through hole two (5-2); Described top reinforcing structure also comprises multiple tracks and is laid in stirrup one (6-1) on PBL stiffening rib one (3-1) described in multiple tracks from top to bottom, described in multiple tracks, stirrup one (6-1) is in parallel laying, the quantity of stirrup one (6-1) described in multiple tracks is identical with the quantity of multiple described through hole one (5-1), and passes in the multiple described through hole one (5-1) opened on every described PBL stiffening rib one (3-1) together respectively of stirrup one (6-1) described in multiple tracks; Described bottom reinforcing structure also comprises multiple tracks and is laid in stirrup two (6-2) on PBL stiffening rib two (3-2) described in multiple tracks from top to bottom, described in multiple tracks, stirrup two (6-2) is in parallel laying, the quantity of stirrup two (6-2) described in multiple tracks is identical with the quantity of multiple described through hole two (5-2), and passes in the multiple described through hole two (5-2) opened on every described PBL stiffening rib two (3-2) together respectively of stirrup two (6-2) described in multiple tracks;
Described in PBL stiffening rib one (3-1) described in multiple tracks and multiple tracks, PBL stiffening rib two (3-2) is all evenly laid along the circumferencial direction of interior steel pipe (2).
2. according to end according to claim 1 based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: the external diameter of described interior steel pipe (2) is Φ 102mm ~ Φ 2000mm, the wall thickness of described outer steel pipe (1) and interior steel pipe (2) is 4mm ~ 66mm, and A1 ︰ A2=1 ︰ (0.6 ~ 0.8), wherein A1=a1+b1, a1 is the cross-sectional area of outer steel pipe (1) and b1 is the cross-sectional area of outer steel pipe (1) inner side hollow bulb, A2=π r
2and r is the external diameter of interior steel pipe (2).
3. according to the end described in claim 1 or 2 based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: PBL stiffening rib one (3-1) described in multiple tracks is all identical with the quantity of PBL stiffening rib described in multiple tracks two (3-2), and described in multiple tracks, PBL stiffening rib two (3-2) is laid in immediately below PBL stiffening rib one (3-1) described in multiple tracks respectively.
4. according to the end described in claim 1 or 2 based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: the cross section of described outer steel pipe (1) is circular, rectangle or regular polygon.
5. according to the end described in claim 1 or 2 based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: described in PBL stiffening rib one (3-1) described in multiple tracks and multiple tracks, the thickness of PBL stiffening rib two (3-2) is d1, wherein d1≤D, D are the wall thickness of outer steel pipe (1); The wall thickness of described outer steel pipe (1) is larger, and described in PBL stiffening rib one (3-1) described in multiple tracks and multiple tracks, the thickness of PBL stiffening rib two (3-2) is all larger.
6. according to the end described in claim 1 or 2 based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, to it is characterized in that: described through hole one (5-1) is circular port one, and the aperture of described circular port one
the wherein transverse width of d3 PBL stiffening rib one (3-1) residing for described circular port one; Described through hole two (5-2) is circular port two, and the aperture of described circular port two
the wherein transverse width of d5 PBL stiffening rib two (3-2) residing for described circular port two.
7. according to the end described in claim 1 or 2 based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: the longitudinal length of PBL stiffening rib one (3-1) described in multiple tracks is all identical and its longitudinal length is 1m ~ 1.5m; The longitudinal length of PBL stiffening rib two (3-2) described in multiple tracks is all identical and its longitudinal length is 1m ~ 1.5m.
8. according to the end described in claim 1 or 2 based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: described in PBL stiffening rib one (3-1) described in multiple tracks and multiple tracks, the quantity of PBL stiffening rib two (3-2) is 4 roads, road ~ 8.
9. according to the end described in claim 1 or 2 based on stirrup and the dual SCS concrete pier of steel tube of putting more energy into of stiffening rib, it is characterized in that: described concrete structure (4) is carbon fiber reinforced concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580301.7A CN103015311B (en) | 2012-12-27 | 2012-12-27 | SCS concrete filled steel tube pier reinforced by stirrup and stiffening rib at end |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580301.7A CN103015311B (en) | 2012-12-27 | 2012-12-27 | SCS concrete filled steel tube pier reinforced by stirrup and stiffening rib at end |
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| CN103015311A CN103015311A (en) | 2013-04-03 |
| CN103015311B true CN103015311B (en) | 2015-06-24 |
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| CN202500078U (en) * | 2012-02-14 | 2012-10-24 | 长安大学 | A hollow steel tube cylindrical structure based on externally-installed stiffeners and externally-wrapped concrete |
| CN203007821U (en) * | 2012-12-27 | 2013-06-19 | 长安大学 | SCS steel tube concrete pier with double stiffening structures added on upper end portion and lower end portion |
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- 2012-12-27 CN CN201210580301.7A patent/CN103015311B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| JPH0351462A (en) * | 1989-07-18 | 1991-03-05 | Ohbayashi Corp | Double steel pipe concrete structure |
| JPH05287846A (en) * | 1992-04-13 | 1993-11-02 | Kajima Corp | Square steel pipe concrete member of stiffening structure |
| JPH07292859A (en) * | 1994-04-25 | 1995-11-07 | Nippon Steel Corp | Steel-shell composite structure |
| JPH09165720A (en) * | 1995-12-19 | 1997-06-24 | Ishikawajima Constr Materials Co Ltd | Reinforcing method of cylindrical column |
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| CN102535750A (en) * | 2012-02-14 | 2012-07-04 | 长安大学 | Cylindrical construction part provided with holed stiffening ribs and filled with steel fiber reinforced concrete |
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| CN203007821U (en) * | 2012-12-27 | 2013-06-19 | 长安大学 | SCS steel tube concrete pier with double stiffening structures added on upper end portion and lower end portion |
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| CN103015311A (en) | 2013-04-03 |
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