CN105113716A - Construction method of large-diameter multi-rib-plate high-dropping self-compacting steel pipe concrete superposed columns - Google Patents
Construction method of large-diameter multi-rib-plate high-dropping self-compacting steel pipe concrete superposed columns Download PDFInfo
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Abstract
The invention relates to a construction method of large-diameter multi-rib-plate high-dropping self-compacting steel pipe concrete superposed columns. The construction method mainly comprises the following construction steps of (1) mounting pre-buried anchor bolts; (2) mounting steel pipe core columns; (3) lifting and placing a steel reinforcement cage; (4) adjusting the positions of the steel pipe core columns; (5) pouring concrete into the core columns; (6) erecting outer templates; and (7) pouring external concrete. The end of a reinforcing wing plate is connected to a welding steel plate through a rotary support; the bottom of the reinforcing wing plate is connected to the welding steel plate through a spring; the reinforcing wing plate retracts when touching a hoop bar in the process of putting the hoop bar of the steel reinforcement cage down and then restores to be horizontal. A high-dropping self-compacting method is used for pouring the concrete; the on-site test is carried out firstly before pouring to determine indexes such as the strength and the appearance quality of the concrete; a pouring mode of conveying the concrete by a concrete conveying pump and discharging the concrete by a funnel with a guide tube is adopted. The construction method disclosed by the invention has the advantages of simplicity in operation and high connectivity of components, and has good economic and technical benefits.
Description
Technical field
The present invention relates to the construction method of steel tube concrete superposed column, particularly relate to the construction method that the many floor height of major diameter throw self-compaction steel tube concrete superposed column.
Background technology
Concrete filled steel tube has the plurality of advantages such as bearing capacity is high, anti-seismic performance good, easy construction due to steel pipe and core concrete interaction, mutual supplement with each other's advantages, and the application in super-high building structure is comparatively extensive.According to the difference of section form, concrete filled steel tube can be divided into the types such as concrete filled steel tube, Concrete-Filled Square Steel Tube and concrete-filled rectangular steel tube, and all has a large amount of case histories.Steel tube concrete superposed column grows up on the basis of encased structures, formed by the concrete filled steel tube in the middle part of cross section and the reinforced concrete sandwich outside steel pipe, this kind of combined member not only has the advantage of concrete filled steel tubular member, and the concrete outside steel pipe also can play fire-resistance effect and be convenient to finishing.
Because the collaborative work effect between steel pipe and concrete mainly relies on cementation between the two, and concrete self-constriction, temperature shrinkage, the construction quality problem such as concrete vibrating mode during concreting, can make fully to contact between steel pipe walls with concrete and cannot be guaranteed, especially when sectional dimension increases, concrete shrinkage also obviously increases, just may there is unsticking problem in steel pipe and concrete, adhesion strength between the two will reduce even to lose accordingly, the load simultaneously steel pipe walls is subject to is along with the radial distance of steel pipe transmits gradually, sectional dimension is crossed conference and is caused load cannot effectively pass to center concrete, the concrete of central area on cross section is caused effectively not bear load, steel pipe also may be in overload condition, these factors all greatly reduce the stress performance of concrete filled steel tube and the safety of structure.
Given this, how strengthening steel pipe and concrete globality by new construction method, improving cooperative ability therebetween, is a problem needing solution badly.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide the many floor height of a kind of major diameter to throw the construction method of self-compaction steel tube concrete superposed column.
For achieving the above object, present invention employs following technical scheme:
The many floor height of major diameter throw self-compaction steel tube concrete superposed column construction method, comprise the following steps:
1) cast-in fixing bolt is installed: before underplate concrete is built, arrange cast-in fixing bolt;
2) steel pipe stem stem is installed: underplate concrete is built and after reaching predetermined strength, by crane, steel pipe stem stem is lifted to plate top surface, first a cast-in fixing bolt is inserted in one of them looping pit, and with it for fulcrum, makes other three cast-in fixing bolts be inserted in looping pit;
3) reinforcing cage hangs: after steel pipe stem stem is halted, and supports, then install reinforcing cage by additional support, and the vertical muscle in reinforcing cage outside is fixed by threaded sleeve and the pre-buried shear key of base plate;
4) steel pipe stem stem position is adjusted: after reinforcing cage is fixing, rotates steel pipe stem stem along looping pit, making reinforcing wing plate fasten reinforcing cage angle muscle by arranging superincumbent hole, then fixing cast-in fixing bolt;
5) core column concrete is built: build to adopt and high throw self-compaction method, first carry out field trial, determine concrete strength, the indexs such as apparent mass, adopt concrete conveyance transport pump before building, the blanking of tape guide pipe funnel build mode;
6) outboard template installs: outside reinforcing cage, adopt wooden form formwork, adds reinforcing channel-section steel, add flitch between wooden form and channel-section steel outside wooden form, adopts Screw arbor with nut at both-ends bolt to fix between channel-section steel;
7) outer concrete is built: build to adopt and high throw self-compaction method, first carry out field trial, determine concrete strength, the indexs such as apparent mass, adopt concrete conveyance transport pump before building, the blanking of tape guide pipe funnel build mode.
As preferably: step 2) described in looping pit radian be 30 ° ~ 45 °, each looping pit center angle is 90 °.
As preferably: step 3) described in indulge muscle consistent pre-buried connecting key quantity and outside, circumferentially arrange.
As preferably: step 4) described in reinforce wing plate end and be connected with welding steel by rotating stand, reinforce bottom wing plate and be connected with welding steel by spring, reinforce wing plate in reinforcing cage stirrup decentralization process and encounter stirrup and can shrink, recover level later.
The invention has the beneficial effects as follows:
(1) first found stem stem steel pipe, put reinforcing cage, rotate stem stem and make the wing plate be set in advance on stem stem fasten angle muscle, greatly strengthen the coupling stiffness of steel pipe stem stem and outer steel reinforced concrete.
(2) stem stem tube wall arranges and is connected with wing plate, and wing plate one end is articulated with stern column, and bottom is connected by oblique spring, and in reinforcing cage decentralization process, connector runs into stirrup and straightens, and automatically becomes level between stirrup spacing, and whole process operation is simple, and implementation result is good.
(3) be connected with straight screw sleeve bottom outside vertical muscle, the circular steel plate of capital steel pipe side transverse weld, outside muscle of indulging is bolted on steel plate, whole superposed column structure and outside coupling stiffness large.
(4) problems such as adopting and high throw self-compaction method concreting, solve the segregation in whole concrete filled steel tube casting process, density that many dividing plates cause is inadequate.
Accompanying drawing explanation
Fig. 1 is major diameter many floors steel tube concrete superposed column structural representation;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 reinforces wing plate detail of construction;
Fig. 5 is the C-C sectional view of Fig. 4;
Fig. 6 is major diameter many floors steel tube concrete superposed column formwork schematic diagram;
Fig. 7 is that the many floor height of major diameter throw self-compaction steel tube concrete superposed column construction flow chart;
Description of reference numerals: 1. base plate; 2. pre-buried connecting key; 3. threaded sleeve; 4. cast-in fixing bolt; 5. stirrup; 6. reinforce wing plate; 7. steel pipe floor; 8. steel pipe stem stem; 9. outside vertical muscle; 10. capital wing plate; 11. top boards; 12. fastening bolts; 13. looping pits; 14. rotating stands; 15. linking springs; 16. welding steels; 17. Screw arbor with nut at both-ends; 18. flitches; 19. channel-section steels; 20. wooden forms.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further.The explanation of following embodiment just understands the present invention for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Just do not state tired in these enforcements such as present embodiment welding for steel structure technique, bolt connection construction technique, template-setup technique and concrete pouring construction technique, emphasis sets forth the embodiment that the present invention relates to structure.
Fig. 1 is that the many floor height of major diameter of the present invention throw self-compaction steel tube concrete superposed column structural representation.With reference to shown in Fig. 1, major diameter of the present invention many floors height is thrown self-compaction steel tube concrete superposed column and is mainly comprised: pre-buried connecting key 2, threaded sleeve 3, cast-in fixing bolt 4, stirrup 5, reinforcing wing plate 6, steel pipe floor 7, steel pipe stem stem 8, outside vertical muscle 9.
Before steel tube concrete superposed column is installed, first carry out the construction of cast-in fixing bolt 4 bottom suspension column, 4 looping pits 13 are set along steel pipe stem stem 8 circumference.
With reference to shown in Fig. 1, steel pipe stem stem 8 also, after reaching predetermined strength, lifts to plate top surface by crane by base plate 1 concreting, first a cast-in fixing bolt 4 is inserted in one of them looping pit 13, and with for fulcrum, make other three cast-in fixing bolts 4 be inserted in looping pit.
With reference to shown in Fig. 1, after steel pipe stem stem 8 is halted, support, then install reinforcing cage by additional support, the vertical muscle 9 in reinforcing cage outside is fixed by the pre-buried connecting key 2 that threaded sleeve 3 and base plate are pre-buried.
With reference to shown in Fig. 2, after reinforcing cage is fixing, rotates steel pipe stem stem 8 along looping pit 13, making reinforcing wing plate 6 fasten reinforcing cage angle muscle by arranging superincumbent hole, then fixing cast-in fixing bolt 4, and carrying out the concreting in stem stem.
With reference to shown in Fig. 3, outside reinforcing cage, adopt wooden form 20 formwork, add outside wooden form 20 and reinforce channel-section steel 19, add flitch 18 between wooden form 20 and channel-section steel 19, between channel-section steel, 19 adopt Screw arbor with nut at both-ends 17 to fix with bolt, carry out outer concrete and build.
When constructing to capital, weld transverse post roof limb plate 10 in advance at capital, outside vertical muscle 9 is fixed through the hole that capital wing plate 10 is preset fastening bolt 12.
Present invention also offers the many floor height of above-mentioned major diameter and throw self-compaction steel tube concrete superposed column construction method, mainly comprise the following steps:
1) cast-in fixing bolt 4 is installed: before base plate 1 concreting, arrange cast-in fixing bolt 4.
2) steel pipe stem stem 8 is installed: base plate 1 concreting after reaching predetermined strength, by crane, steel pipe stem stem 8 is lifted to plate top surface, first a cast-in fixing bolt 4 is inserted in one of them looping pit 13, and with for fulcrum, make other three cast-in fixing bolts 4 be inserted in looping pit.
Reinforcing cage hangs: after steel pipe stem stem 8 is halted, and supports, then install reinforcing cage by additional support, and the vertical muscle 9 in reinforcing cage outside is fixed by the pre-buried connecting key 2 that threaded sleeve 3 and base plate are pre-buried.
4) steel pipe stem stem 8 position is adjusted: after reinforcing cage is fixing, rotates steel pipe stem stem 8 along looping pit 13, making reinforcing wing plate 6 fasten reinforcing cage angle muscle by arranging superincumbent hole, then fixing cast-in fixing bolt 4.
5) core column concrete is built: build to adopt and high throw self-compaction method, first carry out field trial, determine concrete strength, the indexs such as apparent mass, adopt concrete conveyance transport pump before building, the blanking of tape guide pipe funnel build mode.
6) outboard template installs: outside reinforcing cage, adopt wooden form 20 formwork, adds and reinforce channel-section steel 19 outside wooden form 20, add flitch 18 between wooden form 20 and channel-section steel 19, between channel-section steel, 19 adopt Screw arbor with nut at both-ends 17 to fix with bolt,
7) outer concrete is built: build to adopt and high throw self-compaction method, first carry out field trial, determine concrete strength, the indexs such as apparent mass, adopt concrete conveyance transport pump before building, the blanking of tape guide pipe funnel build mode.
Step 2) described in looping pit 13 radian be 30 ° ~ 45 °, each looping pit 13 center angle is 90 °.
Step 3) described in indulge muscle 9 consistent pre-buried connecting key 2 quantity and outside, circumferentially arrange.
Step 4) described in reinforce wing plate 6 end and be connected with welding steel 16 by rotating stand, reinforce bottom wing plate 6 and be connected with welding steel 16 by spring, reinforce wing plate 6 in reinforcing cage stirrup decentralization process and encounter stirrup and can shrink, recover level later.
Claims (4)
1. the many floor height of major diameter throw a self-compaction steel tube concrete superposed column construction method, it is characterized in that, comprise the following steps:
1) cast-in fixing bolt (4) is installed: before base plate (1) concreting, arrange cast-in fixing bolt (4);
2) steel pipe stem stem (8) is installed: base plate (1) concreting after reaching predetermined strength, by crane, steel pipe stem stem (8) is lifted to base plate (1) end face, first a cast-in fixing bolt (4) is inserted in one of them looping pit (13), and with it for fulcrum, make other three cast-in fixing bolts (4) be inserted in looping pit;
3) reinforcing cage hangs: after steel pipe stem stem (8) is halted, support by additional support, then install reinforcing cage, the vertical muscle (9) in reinforcing cage outside is fixed by the shear key (2) that threaded sleeve (3) and base plate (1) are pre-buried;
4) steel pipe stem stem (8) position is adjusted: after reinforcing cage is fixing, steel pipe stem stem (8) is rotated along looping pit (13), making reinforcing wing plate (6) fasten reinforcing cage angle muscle by arranging superincumbent hole, then fixing cast-in fixing bolt (4);
5) core column concrete is built: build to adopt and high throw self-compaction method, first carry out field trial, determine concrete strength, the indexs such as apparent mass, adopt concrete conveyance transport pump before building, the blanking of tape guide pipe funnel build mode;
6) outboard template installs: outside reinforcing cage, adopt wooden form (20) formwork, wooden form (20) outside adds and reinforces channel-section steel (19), add flitch (18) between wooden form (20) and channel-section steel (19), between channel-section steel, (19) adopt Screw arbor with nut at both-ends (17) to fix with bolt;
7) outer concrete is built: build to adopt and high throw self-compaction method, first carry out field trial, determine concrete strength, the indexs such as apparent mass, adopt concrete conveyance transport pump before building, the blanking of tape guide pipe funnel build mode.
2. the many floor height of major diameter according to claim 1 throw self-compaction steel tube concrete superposed column construction method, it is characterized in that: step 2) described in looping pit (13) radian be 30 ° ~ 45 °, each looping pit (13) center angle is 90 °.
3. the many floor height of major diameter according to claim 1 throw self-compaction steel tube concrete superposed column construction method, it is characterized in that: step 3) described in indulge muscle (9) consistent pre-buried connecting key (2) quantity and outside, circumferentially arrange.
4. the many floor height of major diameter according to claim 1 throw self-compaction steel tube concrete superposed column construction method, it is characterized in that: step 4) described in reinforce wing plate (6) end and be connected with welding steel (16) by rotating stand, reinforce wing plate (6) bottom to be connected with welding steel (16) by spring, reinforce wing plate (6) in reinforcing cage stirrup decentralization process to encounter stirrup and can shrink, recover level later.
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| CN201510571144.7A CN105113716B (en) | 2015-09-09 | 2015-09-09 | The many floors of major diameter are high to throw self-compaction steel tube concrete superposed column construction method |
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| CN201510571144.7A CN105113716B (en) | 2015-09-09 | 2015-09-09 | The many floors of major diameter are high to throw self-compaction steel tube concrete superposed column construction method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569327A (en) * | 2015-12-30 | 2016-05-11 | 中国建筑第二工程局有限公司 | Frame body for concrete filled steel tube high-throwing construction and using method thereof |
| CN105735113A (en) * | 2016-04-20 | 2016-07-06 | 四川省交通运输厅公路规划勘察设计研究院 | Pier pile transition connection structure for concrete-filled steel tube bridge and construction method of pier pile transition connection structure |
| CN109457869A (en) * | 2018-11-13 | 2019-03-12 | 上海建工五建集团有限公司 | The built-in process and device of concrete column corner protector |
| CN110629932A (en) * | 2019-08-22 | 2019-12-31 | 成都建工第二建筑工程有限公司 | High-rise steel pipe concrete composite column construction method |
| CN110714528A (en) * | 2019-10-21 | 2020-01-21 | 北京工业大学 | Giant square concrete-filled steel tube member with composite structure |
| CN111894204A (en) * | 2020-06-24 | 2020-11-06 | 中铁五局集团成都工程有限责任公司 | Steel pipe concrete composite column construction method |
| CN111945550A (en) * | 2020-07-21 | 2020-11-17 | 河海大学 | Energy-consuming and shock-absorbing pier structure and construction method and application thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569327A (en) * | 2015-12-30 | 2016-05-11 | 中国建筑第二工程局有限公司 | Frame body for concrete filled steel tube high-throwing construction and using method thereof |
| CN105735113A (en) * | 2016-04-20 | 2016-07-06 | 四川省交通运输厅公路规划勘察设计研究院 | Pier pile transition connection structure for concrete-filled steel tube bridge and construction method of pier pile transition connection structure |
| CN109457869A (en) * | 2018-11-13 | 2019-03-12 | 上海建工五建集团有限公司 | The built-in process and device of concrete column corner protector |
| CN109457869B (en) * | 2018-11-13 | 2024-04-30 | 上海建工五建集团有限公司 | Pre-burying method and device for concrete column corner protector |
| CN110629932A (en) * | 2019-08-22 | 2019-12-31 | 成都建工第二建筑工程有限公司 | High-rise steel pipe concrete composite column construction method |
| CN110714528A (en) * | 2019-10-21 | 2020-01-21 | 北京工业大学 | Giant square concrete-filled steel tube member with composite structure |
| CN111894204A (en) * | 2020-06-24 | 2020-11-06 | 中铁五局集团成都工程有限责任公司 | Steel pipe concrete composite column construction method |
| CN111945550A (en) * | 2020-07-21 | 2020-11-17 | 河海大学 | Energy-consuming and shock-absorbing pier structure and construction method and application thereof |
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