CN104674986A - Multi-cavity concrete-filled steel tubular wall with internal pre-machined semi-continuous reinforcement cage and construction method - Google Patents
Multi-cavity concrete-filled steel tubular wall with internal pre-machined semi-continuous reinforcement cage and construction method Download PDFInfo
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Abstract
The invention relates to a multi-cavity concrete-filled steel tubular wall with internal pre-machined semi-continuous reinforcement cages and a construction method. The multi-cavity concrete-filled steel tubular wall comprises a steel frame and a continuous reinforcement cage; discontinuous reinforcement cages are prefabricated in the steel frame; the length-to-width ratio of the steel frame is more than or equal to 3; the steel frame in which the discontinuous reinforcement cages are prefabricated is a whole consisting of the discontinuous reinforcement cages, a giant steel frame and tying parts; the giant steel frame is internally divided into a plurality of cavities by transverse vertical partition plates; transverse partition plates are arranged at intervals along the height direction in each cavity; the discontinuous reinforcement cages are positioned between the adjacent transverse partition plates, and are integrally connected with the inner wall of the giant steel frame through the tying parts; the continuous reinforcement cage is arranged in a full-length manner along the lengths of the cavities; holes through which the continuous reinforcement cage penetrate are formed in the middle parts of the transverse partition plates. According to the multi-cavity concrete-filled steel tubular wall and the construction method, the technical problems of weak compressive strength and shear strength and poor fire resistance of an ultra-long giant steel plate wall structure are solved, and the multi-cavity concrete-filled steel tubular wall and the construction method can be widely applied to a super high-rise large-span structure.
Description
Technical field
The present invention relates to a kind of steel plate shear force wall and construction method thereof, particularly the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of a kind of built-in preprocessing and construction method.
Background technology
Along with City Building scale constantly increases the requirement with anti-seismic technology, the application of steel plate shear force wall is more, conventional steel plate shear force wall is outsourcing steel framework, the mode of interior concreting, but there are some problems in this structural form, there is the problem of shrinkage and creep in such as concrete, especially to large scale steel plate shear force wall, the larger concrete of internal volume after contractions, and there is microcrack between steel plate, may cause concrete and steel plate cannot be simultaneously stressed like this, reach predetermined stressed effect.
For solving the problem, also there is a kind of heavy in section steel plate shear force wall as shown in Figure 1, its structural form comprises the steel framework that encased steel plate 1 encloses, concrete 2 has been built in steel framework, this form of structure enhances to a certain extent and limits concrete contraction, add the globality of outer steel framework and inner concrete, this form of structure is applicable to the larger-size situation of shear wall cross section.
Said structure is in specific implementation process, there are the following problems: from structure stress angle, said structure form is due to the unconfined reinforcing bar of large-area concrete, under outside load action, wherein radicals by which characters are arranged in traditional Chinese dictionaries first destroy, as shown in Figure 2, as we can see from the figure under outer load F effect, curvature in the middle part of deformation curve 1 is very large, occurs bulging phenomenon.That also increases horizontal restrain why not to large-area concrete, improve its compressive strength, it has its source in, the construction of heavy in section steel plate shear force wall reinforcing bar part needs to enter in steel framework, it is narrow and small that workman enters construction space in steel framework, activity duration is long, and job site is often easy to have an accident for multiplex (MUX) plants cross-operation.Therefore, apply horizontal restrain at the continuity reinforcement(bar) of the discrete distribution of existing heavy in section steel plate shear force wall cannot implement at the scene.
Summary of the invention
The object of this invention is to provide multi-cavity steel tube concrete wall and the construction method of the semicontinuous reinforcing cage of a kind of built-in preprocessing, the technical problem solved is the compressive strength strengthening existing heavy in section steel plate shear force wall, improve its bearing capacity and reduce its difficulty of construction, improving the technical problem of efficiency of construction and working security.
For achieving the above object, the present invention adopts following technical scheme:
A multi-cavity steel tube concrete wall for the semicontinuous reinforcing cage of built-in preprocessing, comprise concrete, aspect ratio that inside is prefabricated with interrupted reinforcing cage be more than or equal to 3 steel framework and continuity reinforcement(bar) cage; The steel framework that described inside is prefabricated with interrupted reinforcing cage is the entirety that interrupted reinforcing cage, huge steel framework and tension member form; Described huge steel framework inside is become several cavitys by Horizontal vertical baffle for separating, transverse partition panel is arranged at intervals with along short transverse in each cavity, described interrupted reinforcing cage is between adjacent transverse demarcation strip, and it connects into entirety by tension member and huge steel framework inwall; Described continuity reinforcement(bar) cage, along the elongated setting of cavity length, has the hole passed for continuity reinforcement(bar) cage in the middle part of described transverse partition panel.
Further, the single piece of described transverse partition panel center hole or multiple separate piece of radial distribution centered by steel framework center.
Further, described encased steel plate is or/and Horizontal vertical baffle surface is welded with peg.
Further, described transverse partition panel arranges at least one deck at same position.
Further, described transverse partition panel is 0.2m ~ 30m along the setting space in described housing depth direction.
Further, described tension member is straight bar dowel, the bar dowel of end belt elbow, steel cushion block or clamp.
A construction method for the multi-cavity steel tube concrete wall of the above-mentioned semicontinuous reinforcing cage of built-in preprocessing, its step is as follows:
Step one, forms multiple huge steel framework module by encased steel plate, Horizontal vertical dividing plate, transverse partition panel welding;
Step 2, forms interrupted reinforcing cage by large stirrup, the welding of non-elongated longitudinal reinforcement; Elongated longitudinal reinforcement and the welding of little stirrup are formed continuity reinforcement(bar) cage simultaneously;
Step 3, puts into huge steel framework module by interrupted reinforcing cage, and welds with huge steel framework module inwall and form entirety;
Step 4, forms the multiple huge steel framework module standard joint of different length specification;
Step 5, multiple huge steel framework module standard joint and continuity reinforcement(bar) cage are transported to job site, and at the scene huge steel framework module standard joint are pieced together Multi-cavity steel frame standard knot, then the continued access of Multi-cavity steel frame standard knot becomes whole shear wall;
Step 6, hangs in the cavity of shear wall by continuity reinforcement(bar) cage;
Step 7, concreting, makes concrete, continuity reinforcement(bar) cage, interrupted reinforcing cage and cavity form entirety.
Wherein, described welding that is interrupted or continuity reinforcement(bar) cage also can be transported to on-the-spot rear welding at Multi-cavity steel frame standard knot, and now corresponding omission continuity reinforcement(bar) cage transports link.
Wherein, in described step 3, when interrupted reinforcing cage is welded with cavity inner wall, in advance in cavity inner wall interval welded connections.
Wherein, in described step one, when encased steel plate and Horizontal vertical dividing plate, transverse partition panel welding are formed multiple huge steel framework module, in advance in surface of steel plate weld stud.
Compared with prior art the present invention has following characteristics and beneficial effect:
The present invention proposes a kind of novel steel plate shear wall structure form, this structure is owing to being set to one by huge steel framework and interrupted reinforcing cage, both met and applied horizontal restrain to interrupted longitudinal reinforcement, improved the huge shear wall compressive strength of steel framework concrete and shear strength.Such as under the effect of axle power, the discontinuous reinforcing bar of steel plate shear force wall waist plays effect of contraction, improves axially compressed behavior.If under shearing action, multi-cavity steel tube concrete shear wall is that steel plate is cut, and steel concrete part also can be cut.Former encased steel plate shear wall inside is plain concrete, and there is microcrack, and shearing is far smaller than the shear-carrying capacity of steel concrete.
Meanwhile, without the need to or reduce in steel framework and construct, the efficiency of construction of raising, reduces difficulty of construction, the incidence of the accident of minimizing.
Applying horizontal restrain by giving interrupted longitudinal reinforcement enables steel framework and concrete at construction and serviceability limit stage close contact, gives full play to steel framework to concrete effect of contraction, fully reduces the adverse effect that concrete shrinkage is brought bearing capacity.
The present invention proposes a kind of novel steel plate shear wall structure form and there is good anti-seismic performance.First, multi-cavity steel framework forms multi-cavity space constraint to concrete, simultaneously, conventional steel plates shear wall destroys the central region mainly occurring in shear wall, this novel shear wall indulges by non-interconnected the stirrup that muscle arranges at middle part, play the effect strengthening middle part concrete constraint, bearing capacity and the ductility of the antidetonation of steel plate shear force wall can be improved further.
The reinforcing cage that the present invention proposes a kind of novel its inside of steel plate shear force wall comprises continuity reinforcement(bar) cage and interrupted reinforcing cage; interrupted reinforcing cage forms the semi-connected steel concrete part of built-in reinforcing bar together with concrete; in a fire; first encased steel plate lost efficacy; but built-in steel concrete part forms reinforced concrete shear wall; the load born in fire can be continued, thus effectively improve the fire resistance property of structure.
In work progress, construction method non-interconnected provided by the invention indulges muscle preprocessing can become reinforcing cage with stirrup, by connector and steel framework welded together, transport directly to job site, connection reinforcing bar and stirrup can preprocessing be also reinforcing cage, steel plate is also preprocessing, effectively can improve construction quality, shortens the engineering time.
The present invention can be widely used in Super High longspan structure.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 existing heavy in section steel plate shear force wall sectional side elevation.
Fig. 2 is the distortion schematic diagram under the steel plate shear force wall outer load effect of existing heavy in section.
Fig. 3 is the application heavy in section steel plate shear force wall sectional side elevation.
Fig. 4 is the A-A sectional elevation of Fig. 3.
Fig. 5 is the B-B sectional elevation of Fig. 3.
Fig. 6 is construction method flow chart.
Fig. 7 is the stress deformation schematic diagram of the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing.
Reference numeral: longitudinal reinforcement, the large stirrup of 5-, the non-elongated longitudinal reinforcement of 6-, 7-concrete, 8-tension member, 9-Horizontal vertical dividing plate, the continuous longitudinal reinforcement of 11-, 12-deformation curve one, 13-deformation curve two that 1-encased steel plate, 2-lateral partitions, the little stirrup of 3-, 4-are elongated.
Detailed description of the invention
For describing technical scheme of the present invention in detail, provide specific embodiment below in conjunction with accompanying drawing.
Embodiment one, see Fig. 3, Fig. 4 and Fig. 5, is the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of a kind of built-in preprocessing, comprises steel framework and continuity reinforcement(bar) cage that aspect ratio that inside is prefabricated with interrupted reinforcing cage is more than or equal to 3; The entirety that the steel framework that described inside is prefabricated with interrupted reinforcing cage is made up of interrupted reinforcing cage, huge steel framework and tension member 8; Described huge steel framework inside is separated into several cavitys by Horizontal vertical dividing plate 9, transverse partition panel 2 is arranged at intervals with along short transverse in each cavity, described interrupted reinforcing cage is between adjacent transverse demarcation strip 2, and it connects into entirety by tension member 8 and huge steel framework inwall; Described continuity reinforcement(bar) cage, along the elongated setting of cavity length, has the hole passed for continuity reinforcement(bar) cage in the middle part of described transverse partition panel 2.Described core reinforcing cage is identical with interrupted reinforcing cage central axis, and described concreting is in cavity and described continuity reinforcement(bar) cage and the gap between described continuity reinforcement(bar) cage and described interrupted reinforcing cage.
Further, described continuity reinforcement(bar) cage is formed by connecting by elongated longitudinal reinforcement 4, little stirrup 5.
Further, described interrupted reinforcing cage is formed by connecting by non-elongated longitudinal reinforcement 6 and large stirrup 3.
Described large stirrup 5, little stirrup 3 be two kinds of stirrup diameters comparatively speaking, the large diameter of stirrup 5 or the diameter of inscribed circle, be greater than the little diameter of stirrup 3 or the diameter of inscribed circle.
Further, described large stirrup 5 and little stirrup 3 are circular stirrups.
Further, the cross section of described steel framework and cavity is square.
Described transverse partition panel 2 arranges at least one deck at same position, and the present embodiment is two-layer, and described transverse partition panel 2 is 0.2m ~ 30m along the setting space in described housing depth direction.Common setting position is at floor position.
The single piece of described transverse partition panel 2 center hole, in other embodiments, described transverse partition panel 2 can also be multiple separate piece of radial distribution centered by tubular structure center.
In order to increase concrete and described encased steel plate 1 or/and adhesion stress between Horizontal vertical dividing plate 9, described encased steel plate 1 is or/and Horizontal vertical dividing plate 9 surface soldered has peg.
Described tension member 8 is straight bar dowel, the bar dowel of end belt elbow, steel cushion block or clamp.
In order to the technique effect that the technical scheme of technical scheme and prior art that the application is described produces, the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing of the application is carried out contrast with the deformation of existing heavy in section steel plate shear force wall under identical external load effect F and refers to Fig. 2 and Fig. 7, as can be seen from schematic diagram, when huge steel framework inside is prefabricated with interrupted reinforcing cage, non-elongated longitudinal reinforcement 6 in interrupted reinforcing cage applies horizontal restrain by large stirrup 3, and after connecting into entirety by connector 8 and the inwall of huge steel framework, deformation curve 2 13 in the middle part of steel plate wall obviously reduces than the degree of crook of deformation curve 1, thus prove the applying of horizontal restrain, the compressive strength of the Huge Steel Open board wall of effective raising and ductility.
The construction method of the multi-cavity steel tube concrete wall of the above-mentioned semicontinuous reinforcing cage of built-in preprocessing, see Fig. 6, its step is as follows:
Step one, welds encased steel plate 1 and Horizontal vertical dividing plate 9, transverse partition panel 2 and forms multiple huge steel framework module;
Step 2, welds form interrupted reinforcing cage by large stirrup 5, non-elongated longitudinal reinforcement 6; Elongated longitudinal reinforcement 4 and little stirrup 3 are welded simultaneously and form continuity reinforcement(bar) cage;
Step 3, puts into huge steel framework module by interrupted reinforcing cage, and welds with huge steel framework module inwall and form entirety;
Step 4, forms the multiple huge steel framework module standard joint of different length specification;
Step 5, multiple huge steel framework module standard joint and continuity reinforcement(bar) cage are transported to job site, and at the scene huge steel framework module standard joint are pieced together Multi-cavity steel frame standard knot, then the continued access of Multi-cavity steel frame standard knot becomes whole shear wall;
Step 6, hangs in the cavity of shear wall by continuity reinforcement(bar) cage;
Step 7, concreting, makes concrete, continuity reinforcement(bar) cage, interrupted reinforcing cage and cavity form entirety.The mode of concreting is typically chosen in pump pressure type.
Because this method is applicable to huge steel plate shear force wall, its cross section is general all comparatively large, and therefore aforesaid way is a kind of typical way, for the steel plate shear force wall that cross section is less, also can omit huge steel framework module standard joint making link, directly be made as Multi-cavity steel frame standard knot.
Wherein, the welding of described continuity reinforcement(bar) cage also can be transported to on-the-spot rear welding at Multi-cavity steel frame standard knot, and now corresponding omission continuity reinforcement(bar) cage transports link.
Wherein, in described step 3, when interrupted reinforcing cage is welded with cavity inner wall, in advance in cavity inner wall interval welded connections 8.
In the specific implementation, in described step one, when encased steel plate 1 and Horizontal vertical dividing plate 9, transverse partition panel 2 being welded the multiple huge steel framework module of formation, in advance in surface of steel plate weld stud.
Claims (10)
1. a multi-cavity steel tube concrete wall for the semicontinuous reinforcing cage of built-in preprocessing, is characterized in that: comprise concrete, aspect ratio that inside is prefabricated with interrupted reinforcing cage be more than or equal to 3 steel framework and continuity reinforcement(bar) cage; The entirety that the steel framework that described inside is prefabricated with interrupted reinforcing cage is interrupted reinforcing cage, huge steel framework and tension member (8) form; Described huge steel framework inside is separated into several cavitys by Horizontal vertical dividing plate (9), transverse partition panel (2) is arranged at intervals with along short transverse in each cavity, described interrupted reinforcing cage is positioned between adjacent transverse demarcation strip (2), and it connects into entirety by tension member (8) and huge steel framework inwall; Described continuity reinforcement(bar) cage is along the elongated setting of cavity length, and there is the hole passed for continuity reinforcement(bar) cage at described transverse partition panel (2) middle part.
2. the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing according to claim 1, is characterized in that: the single piece of described transverse partition panel (2) center hole or multiple separate piece of radial distribution centered by steel framework center.
3. the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing according to claim 1 and 2, is characterized in that: described encased steel plate (1) is or/and Horizontal vertical dividing plate (9) surface soldered has peg.
4. the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing according to claim 3, is characterized in that: described transverse partition panel (2) arranges at least one deck at same position.
5. the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing according to claim 3, is characterized in that: described transverse partition panel (2) is 0.2m ~ 30m along the setting space in described housing depth direction.
6. the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing according to claim 1, is characterized in that: described tension member (8) is straight bar dowel, the bar dowel of end belt elbow, steel cushion block or clamp.
7. a construction method for the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing as described in claim 1 to 6 any one, its step is as follows:
Step one, forms multiple huge steel framework module by encased steel plate (1), Horizontal vertical dividing plate (9), transverse partition panel (2) welding;
Step 2, forms interrupted reinforcing cage by large stirrup (5), non-elongated longitudinal reinforcement (6) welding; Elongated longitudinal reinforcement (4) and little stirrup (3) welding are formed continuity reinforcement(bar) cage simultaneously;
Step 3, puts into huge steel framework module by interrupted reinforcing cage, and welds with huge steel framework module inwall and form entirety;
Step 4, forms the multiple huge steel framework module standard joint of different length specification;
Step 5, multiple huge steel framework module standard joint and continuity reinforcement(bar) cage are transported to job site, and at the scene huge steel framework module standard joint are pieced together Multi-cavity steel frame standard knot, then the continued access of Multi-cavity steel frame standard knot becomes whole shear wall;
Step 6, hangs in the cavity of shear wall by continuity reinforcement(bar) cage;
Step 7, concreting, makes concrete, continuity reinforcement(bar) cage, interrupted reinforcing cage and cavity form entirety.
8. the construction method of the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing according to claim 7, it is characterized in that: described welding that is interrupted or continuity reinforcement(bar) cage also can be transported to on-the-spot rear welding at Multi-cavity steel frame standard knot, and now corresponding omission continuity reinforcement(bar) cage transports link.
9. the construction method of the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing according to claim 7, it is characterized in that: in described step 3, when interrupted reinforcing cage is welded with cavity inner wall, in advance at cavity inner wall interval welded connections (8).
10. the construction method of the multi-cavity steel tube concrete wall of the semicontinuous reinforcing cage of built-in preprocessing according to claim 7, it is characterized in that: in described step one, when encased steel plate (1) and Horizontal vertical dividing plate (9), transverse partition panel (2) welding are formed multiple huge steel framework module, in advance in surface of steel plate weld stud.
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| CN105133793A (en) * | 2015-09-07 | 2015-12-09 | 姚攀峰 | Space constraint multi-cavity pipe-in-pipe steel bar concrete huge column and construction method |
| CN106013607A (en) * | 2016-05-20 | 2016-10-12 | 西安建筑科技大学 | Multi-cavity concrete-filled steel pipe combination column with stiffening ribs and manufacturing method |
| CN106639046A (en) * | 2016-12-30 | 2017-05-10 | 上海建工四建集团有限公司 | Entirely prefabricated monolayer steel plate-concrete composite shear wall and assembly method thereof |
| CN107237426A (en) * | 2017-06-15 | 2017-10-10 | 姚攀峰 | A kind of multiple constraint armored concrete pillar wall construction, structural system and its engineering method |
| CN112282118A (en) * | 2020-10-16 | 2021-01-29 | 合力建设有限公司 | Residential system of steel pipe concrete close-packed column steel plate energy-consuming shear wall structure |
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