CN202519879U

CN202519879U - High damping concrete laminated column for reinforced core steel tube

Info

Publication number: CN202519879U
Application number: CN2012200152250U
Authority: CN
Inventors: 汪梦甫; 陈文龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-13
Filing date: 2012-01-13
Publication date: 2012-11-07
Anticipated expiration: 2022-01-13

Abstract

The utility model relates to a high damping concrete laminated column for a reinforced core steel tube. The laminated column comprises steel tube concrete which is positioned in the middle of the section and consists of a core steel tube and concrete, and steel bar concrete at the periphery of the steel tube, wherein the core steel tube is the reinforced core steel tube formed by welding four strip-type steel plates on the core steel tube along the outer wall of the core steel tube in a full-length mode; a row of holes through which binding stirrups pass are reserved along the long side direction of each of the four strip-type steel plates; the stirrups pass through the holes reserved on the strip-type steel plates to form longitudinal inner stirrups; longitudinal steel bars and longitudinal outer stirrups are bound at the peripheries of the strip-type steel plates along the axial direction of the core steel tube to form a steel bar mesh; a template is supported outside the steel bar mesh; high damping concrete is poured between the template and the core steel tube; and high strength concrete is poured in the core steel tube. The compression stability of the concrete of the core steel tube is improved, the probability that axial compression strength is reduced due to eccentricity during bias is reduced, and the earthquake resistance of the steel tube concrete laminated column is improved.

Description

Strengthen the high damping concrete superposed column of core steel pipe

Technical field

The utility model belongs to field of civil engineering, particularly strengthens the high damping concrete superposed column of core steel pipe.

Background technology

Along with the high speed development of China's economic construction, numerous high-storey business, office building, hotel and commerce trading center had been built in many big and medium-sized cities in the last few years.Many characteristic high levels, super highrise building also become urban landmark.In these steel concrete highrise buildings, steel core concrete column has obtained more widely using, its form of structure has not only improved inner concrete supporting capacity effectively, and has overcome the shortcoming that cripling takes place steel tubular structure easily.Yet along with the maturation of concrete filled steel tube technology, its shortcoming also manifests day by day.The performance that appears as steel core concrete column of steel tube concrete superposed column has been done to replenish, and has not only effectively reduced the ratio of axial compressive force to axial compressive ultimate capacity of section of steel core concrete column, has increased its deformability, and has improved fireproof performance.

Existing steel tube concrete superposed column is formed by the concrete filled steel tube and the peripheral reinforced concrete sandwich of steel pipe at middle part, cross section; But the peripheral steel concrete of its steel pipe has been born most horizontal force action owing to being in cross-sectional circumference; The axial Ultimate Compressive Strength of steel pipe walls is not strong; The pressurized stability of core concrete filled steel tube is not high yet, and these are all unfavorable to seismic design.

Therefore; When seismic design; Be necessary to take measures to improve the ductility of steel pipe peripheral concrete; Make full use of the anti-pressure ability of core concrete filled steel tube, to reach peripheral steel concrete and core concrete filled steel tube cooperative compensating and to give full play to the effect of drag separately, steel pipe still keeps stronger effect of restraint to core concrete in the later stage in should guaranteeing simultaneously.

Summary of the invention

The purpose of the utility model is to provide a kind of high damping concrete superposed column of strengthening the core steel pipe.To realize to significantly improve the structure energy dissipation capacity and the ductility of steel tube concrete superposed column, the whole pressurized stability that improves the core concrete filled steel tube.

The technical scheme of the utility model is: comprise concrete filled steel tube and the peripheral steel concrete of steel pipe that the middle part, cross section is made up of core steel pipe and concrete; It is characterized in that; Said core steel pipe is to strengthen the core steel pipe, and said reinforcement core steel pipe is the four block length bar steel plates that on the core steel pipe, are welded with along the elongated setting of core outer wall of steel pipe; Long side direction along four block length bar steel plates is reserved with the hole that row's colligation stirrup passes respectively; Stirrup passes the hole of reserving on the strip steel plate and constitutes vertically interior stirrup; Form steel mesh reinforcement in strip steel plate periphery along core steel shaft stirrup outside the colligation longitudinal reinforcement reaches vertically, outside steel mesh reinforcement, propping up has template, and cast high damping concrete is poured into a mould high-strength concrete in the core steel pipe between template and core steel pipe.

Be welded with rivet on described core steel pipe and the strip steel plate.

Described four block length bar steel plates are " ten " font and are symmetrically distributed on the core steel pipe.

Said core steel pipe is circular, and said vertically interior stirrup is circular with vertical outer stirrup.

Said core steel pipe is circular, and said vertically interior stirrup is square or rectangle with vertical outer stirrup.

The utility model is taked the measure at core steel pipe external welding strip steel plate; Steel pipe walls can or not postponed outside flexing takes place; Improve the axial Ultimate Compressive Strength of steel pipe walls; Because the enhancing of tube wall makes it the effect of contraction of pipe inner concrete is strengthened, improved the pressurized stability of core concrete filled steel tube on the whole simultaneously; Reduce during with bias voltage owing to the reduction of eccentric throw axial compressive strength; On the other hand, manage outer steel plate and high damping concrete co-operation, further strengthened energy dissipation capacity and the deformability of steel tube concrete superposed column structure under the earthquake course under cyclic loading, very favourable to the anti-seismic performance that improves the steel tube concrete superposed column structure.

Description of drawings

Fig. 1 is that the utility model shape of cross section is joined steel and arrangement of reinforcement sketch map for circular structure;

Fig. 2 is a B-B section enlarged diagram among Fig. 1;

Fig. 3 is an A-A section enlarged diagram among Fig. 1;

Fig. 4 is that the utility model shape of cross section is that square structure is joined steel and arrangement of reinforcement sketch map;

Fig. 5 is a B-B section enlarged diagram among Fig. 1;

Fig. 6 is an A-A section enlarged diagram among Fig. 1.

The specific embodiment

1～Fig. 6 is described further the utility model below in conjunction with accompanying drawing:

Embodiment 1

Strengthen in the high damping concrete superposed column of core steel pipe shape of cross section and join steel and arrangement of reinforcement sketch map such as Fig. 1～shown in Figure 3 for circular structure.

Present embodiment is combined by core steel pipe 1, strip steel plate 3, and core steel pipe 1 and interior pouring concrete and steel concrete column jacket 8 combine.

Four block length bar steel plates in the present embodiment are " ten " font and are symmetrically distributed on the core steel pipe, and with the core steel pipe through being welded to connect, constitute the core steel pipe 1 that is reinforced.Be reserved with the hole that row's stirrup colligation is passed on the strip steel plate 3; Welding rivet 9 on the core steel pipe of the core steel pipe 1 that is reinforced and strip steel plate; Afterwards at strip steel plate 3 peripheral colligation longitudinal reinforcements 4; The reinforcing bar 4 outer stirrup 5 of colligation rounded longitudinal and along the axial stirrup 6 in the colligation rounded longitudinal equably of core steel pipe 1 equably longitudinally, during stirrup 6, stirrup all should pass the hole of reserving on the strip steel plate 3 in the colligation rounded longitudinal; Outside the steel mesh reinforcement that longitudinal reinforcement 4 and

stirrup

5,6 are formed, stay the thickness of concrete cover distance; Prop up template again, cast high damping concrete between template and core steel pipe 1, cast high-strength concrete in core steel pipe 1.

Embodiment 2:

Strengthen in the high damping concrete superposed column of core steel pipe shape of cross section and be square structure and join steel and arrangement of reinforcement sketch map such as Fig. 4～shown in Figure 6.

The structure of present embodiment and embodiment 1 are basic identical, and difference is that the superposed column peripheral shape is square, inner square vertically in stirrup 6 pass the reserving hole on the strip steel plate 3, and with peripheral longitudinal reinforcement 4 colligations together.

Claims

1. strengthen the high damping concrete superposed column of core steel pipe; Comprise concrete filled steel tube and the peripheral steel concrete of steel pipe that the middle part, cross section is made up of core steel pipe and concrete; It is characterized in that; Said core steel pipe is to strengthen the core steel pipe, and said reinforcement core steel pipe is the four block length bar steel plates that on the core steel pipe, are welded with along the elongated setting of core outer wall of steel pipe; Long side direction along four block length bar steel plates is reserved with the hole that row's colligation stirrup passes respectively; Stirrup passes the hole of reserving on the strip steel plate and constitutes vertically interior stirrup; Form steel mesh reinforcement in strip steel plate periphery along core steel shaft stirrup outside the colligation longitudinal reinforcement reaches vertically, outside steel mesh reinforcement, propping up has template, and cast high damping concrete is poured into a mould high-strength concrete in the core steel pipe between template and core steel pipe.

2. the high damping concrete superposed column of reinforcement core steel pipe according to claim 1 is characterized in that, is welded with rivet on said core steel pipe and the strip steel plate.

3. the high damping concrete superposed column of reinforcement core steel pipe according to claim 1 is characterized in that, described four block length bar steel plates are " ten " font and are symmetrically distributed on the core steel pipe.

4. the high damping concrete superposed column of reinforcement core steel pipe according to claim 1 is characterized in that, said core steel pipe is circular, and said vertically interior stirrup is circular with vertical outer stirrup.

5. the high damping concrete superposed column of reinforcement core steel pipe according to claim 1 is characterized in that, said core steel pipe is circular, and said vertically interior stirrup is square or rectangle with vertical outer stirrup.