CN105780994B - The accentric support steel frame composite floor and its construction method of Self-resetting after a kind of shake - Google Patents

The accentric support steel frame composite floor and its construction method of Self-resetting after a kind of shake Download PDF

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Publication number
CN105780994B
CN105780994B CN201610189767.2A CN201610189767A CN105780994B CN 105780994 B CN105780994 B CN 105780994B CN 201610189767 A CN201610189767 A CN 201610189767A CN 105780994 B CN105780994 B CN 105780994B
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energy dissipating
plate
composite floor
extended
floor
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CN105780994A (en
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胡淑军
宋固全
张波
曾思智
孙业华
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Nanchang University
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Nanchang University
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors

Abstract

The present invention relates to a kind of accentric support steel frame composite floors of Self-resetting after shake, including column, support, energy dissipating beam section, ribbed stiffener, extended end plate and precast floor slab, screw connector, pre embedded bolt, concrete slab, profiled sheet and distribution bar;Described non-energy dissipating beam section one end and support use welded connecting, the non-energy dissipating beam section other end and column to be all made of welded connecting;The energy dissipating beam section is connect with non-energy dissipating beam section by end extended end plate and using high-strength bolt;Ribbed stiffener is set in the energy dissipating beam section;The screw connector is welded on the edge of a wing of non-energy dissipating beam section, and is laid with profiled sheet in non-energy dissipating beam section;Pre embedded bolt and distribution bar, and casting concrete plate are arranged on the profiled sheet;The precast floor slab is connect by pre embedded bolt with concrete slab.The present invention can be repaired quickly after having many advantages, such as reasonable stress, simple structure, easy for construction and shake, be suitable for high-rise and super high rise structure, had a extensive future.

Description

The accentric support steel frame composite floor and its construction method of Self-resetting after a kind of shake
Technical field
The present invention relates to a kind of composite floors of the accentric support steel frame of Self-resetting after shake, belong to Structural Engineering technology neck Domain, suitable for high-rise and super high steel structure.
Background technique
Accentric support steel-frame structure is a kind of more satisfactory structure Lateral Resistant System, the big, anti-seismic performance with rigidity Well, the advantages that stress performance is reasonable, performance are better than pure frame structure and center support frame structure.Accentric support steel-frame structure It is mainly made of components such as energy dissipating beam section, non-energy dissipating beam section, support and columns, as shown in Figure 1.Wherein, support with column, support with The one section of short beam formed between beam or support and support is known as energy dissipating beam section.Using in function, energy dissipating beam section be can be used as commonly Beam provides rigidity for structure and supports floor;Under frequently occurred earthquake, accentric support steel frame Lateral resisting ability with higher, energy Simply meet the anti-lateral displacement requirement of structure, and there is good deformability;Under rarely occurred earthquake, energy dissipating beam section is equivalent to structure " fuse ", enter inelastic state antecedent in main structure and be introduced into surrender and consume energy, i.e., structure passes through energy dissipating beam section Shear yielding or bending surrender reduce damage of the main structure in earthquake come a large amount of seismic energy that dissipates to the maximum extent, And guarantee support without flexing in the whole process.
When inelastic deformation occurs for energy dissipating beam section, upper part and the coagulation with non-energy dissipating beam section junction may be caused Tulou plate cracking, and traditional energy dissipating beam section and non-energy dissipating beam section are a whole beam, when energy dissipating beam section occurs damage or destroys, Non- energy dissipating beam section end has some impact on the use function and reasonability of structure it can also happen that surrender or destruction, unfavorable Yu Zhenhou is timely and effectively repaired.In addition, bearing capacity is larger, makes structure when also having cast-in-place composite floor in energy dissipating beam section It is difficult to ensure that the surrender of component only occurs in energy dissipating beam section.
It may be hogging moment area along overall length, as shown in Figure 2 for non-energy dissipating beam section.When the composite floor of hogging moment area Under deformation, temperature effect or shrinkage and creep, the compound action of girder steel and concrete can make concrete in tension.Due to girder steel and mix Solidifying soil is mainly connected by screw connector with pre embedded bolt, when the mutual constraint between connector and concrete cannot be effective When release, generated tensile stress may make concrete floor crack, and have an adverse effect to the durability of composite floor, together When be also unfavorable for shake after repair.In addition, connector needs that non-energy dissipating beam section and composite floor collective effect can be enable, its carrying is improved Ability.
In conclusion preferably guaranteeing that concrete floor destruction will not occur, and carry meeting to energy dissipating beam section composite floor When ability and the requirement that can be provided for simple replacement of, its bearing capacity is reduced as far as possible, to reach the expected purpose that consumes energy;To non-energy dissipating beam section On composite floor, preferably consider the cracking that concrete slab may occur.Therefore, accentric support steel-frame structure lacks one kind at present For the novel compositions floor in non-energy dissipating beam section and replaceable energy dissipating beam section, to constrain accentric support steel-frame structure Promotion and application.Meet structural seismic capacity and shake after repair ability while, need to guarantee concrete whole process not by It destroys,
Summary of the invention
Present invention generally provides a kind of accentric support steel frame composite floors of Self-resetting after shake, existing its object is to solve There is the technical issues of floor caused when energy dissipating beam section and non-energy dissipating beam section deform excessive in structure destroys, guarantees geological process Lower concrete floor energy Self-resetting is to original state and does not occur to damage and destroy, and improves repair ability and fast quick-recovery after shake Use function.It is connected using precast floor slab with pre embedded bolt above energy dissipating beam section of the invention, energy dissipating beam section may make to occur Upper part floor does not destroy when inelastic deformation, and will not have an adverse effect to floor around;Energy dissipating beam section disappears with non- Energy beam section is connected using high-strength bolt, can quickly be repaired after shake to damaged member;Screw connector can effectively subtract The cracking of concrete slab in small non-energy dissipating beam section, is conducive to improve the collective effect between non-energy dissipating beam section and concrete, and increase The bearing capacity of non-energy dissipating beam section.The present invention have can quickly repair etc. after reasonable stress, simple structure, easy for construction and shake it is excellent Point, has a extensive future.
The technical solution adopted by the present invention are as follows: the accentric support steel frame composite floor of Self-resetting after a kind of shake, including disappear It can beam section composite floor, non-energy dissipating beam section composite floor, support and column;The energy dissipating beam section composite floor include energy dissipating beam section, Ribbed stiffener, extended end plate and precast floor slab;The non-energy dissipating beam section composite floor includes non-energy dissipating beam section, screw connection Part, concrete slab, pre embedded bolt, distribution bar and profiled sheet;Described non-energy dissipating beam section one end and support using be welded to connect, The non-energy dissipating beam section other end and column are all made of welded connecting;The energy dissipating beam section and non-energy dissipating beam section pass through end extended end plate simultaneously It is connected using high-strength bolt;Ribbed stiffener is set in the energy dissipating beam section;The screw connector is welded on non-energy dissipating beam section On the edge of a wing, and profiled sheet is laid in non-energy dissipating beam section;Pre embedded bolt and distribution bar are arranged on the profiled sheet, and are poured Build concrete slab;The precast floor slab is connect by pre embedded bolt with concrete slab.
The construction method of Self-resetting accentric support steel frame composite floor after a kind of shake of the invention, the specific steps are as follows:
A. in the board-like energy dissipating beam section of factory's production overhanging end, non-energy dissipating beam section, support, column and precast floor slab, and by screw rod It is welded in non-energy dissipating beam section top flange plate;
B. non-energy dissipating beam section and energy dissipating beam section pass through extended end plate and high-end bolt joint connection in site;
C. non-energy dissipating beam section in-site installation is in place and after top is laid with profiled sheet, welds pre embedded bolt, and in screw rod Low elastic modulus material sleeve is covered again after tightening with set low elastic modulus material sleeve, nut on pre embedded bolt;
D. concrete slab reinforcing bar is bound;
E. it is poured concrete slab;
F. precast floor slab is covered above energy dissipating beam section;
G. it is filled between cast-in-place concrete and precast floor slab using Bituminous hemp fiber.
The invention has the following advantages:
1. can effectively be discharged since the connector between cast in place concrete plate and non-energy dissipating beam section can occur free to slide Issuable tensile stress in concrete, to reduce the cracking of concrete slab;
2. this kind of connector can improve the collective effect ability between non-energy dissipating beam section and concrete, thus increase non-energy dissipating The bearing capacity of beam section;
3. the composite floor in non-energy dissipating beam section can increase its anti-bending bearing capacity, and only with prefabricated building in energy dissipating beam section Plate and not coupled can be further ensured that energy dissipating beam section non-energy dissipating beam section when being plastically deformed makes partially still in elasticity The surrender of heart Braced Frames occurs over just energy dissipating beam section;
4. non-energy dissipating beam section composite floor and precast floor slab after deformation can Self-resettings after structure meets with rarely occurred earthquake It to original state and does not destroy, it is only necessary to which the energy dissipating beam section of replacement damage or destruction can restore rapidly the use function of structure And shock resistance, realize considerable economic benefit.
Detailed description of the invention
Fig. 1 is accentric support steel-frame structure schematic diagram.
Fig. 2 is the bending moment diagram that energy dissipating beam section and non-energy dissipating beam section may occur.
Fig. 3 is the board-like energy dissipating beam section of overhanging end.
Fig. 4 is non-energy dissipating beam section.
Fig. 5 is the sectional view of accentric support steel frame composite floor of the invention.
Fig. 6 is the plan view of accentric support steel frame composite floor of the invention.
Fig. 7 is the axonometric drawing of accentric support steel frame composite floor of the invention.
Fig. 8 is precast floor slab plan view of the invention.
In figure: 1-energy dissipating beam section;2-ribbed stiffeners;3-extended end plates;4-high-strength bolts;5-non-energy dissipating beam sections;6— Screw connector;7-concrete slabs;8-pre embedded bolts;9-precast floor slabs;10-Bituminous hemp fibers;11-distribution bars; 12-supports;13-columns;14-screw rods;15-nuts;16-low elastic modulus material sleeves;17-profiled sheets.
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be further described.
The accentric support steel frame composite floor of Self-resetting after a kind of shake, including energy dissipating beam section composite floor, non-energy dissipating beam Section composite floor, support 12 and column 13;The energy dissipating beam section composite floor includes energy dissipating beam section 1, ribbed stiffener 2,3 and of extended end plate Precast floor slab 9;The non-energy dissipating beam section composite floor includes non-energy dissipating beam section 5, screw connector 6, concrete slab 7, pre- Bury screw rod 8, distribution bar 11 and profiled sheet 17;Described non-5 one end of energy dissipating beam section and support 12 are using welded connecting, non-energy dissipating 5 other end of beam section and column 13 are all made of welded connecting;The energy dissipating beam section 1 passes through end extended end plate 3 simultaneously with non-energy dissipating beam section 5 It is connected using high-strength bolt 4;Ribbed stiffener 2 is set in the energy dissipating beam section 1;The screw connector 6 is welded on non-energy dissipating beam On the edge of a wing of section 5, it is laid with profiled sheet 17 in non-energy dissipating beam section 5, and reserves the position of precast floor slab 9 above energy dissipating beam section; Pre embedded bolt 8 and distribution bar 11, and casting concrete plate 7 are arranged on the profiled sheet;The precast floor slab 9 passes through pre-buried Screw rod 8 is connect with concrete slab 7.
As shown in figure 3, the board-like energy dissipating beam section of overhanging end is combined by energy dissipating beam section 1, ribbed stiffener 2 and extended end plate 3, and pass through High-strength bolt 4 and non-energy dissipating beam section extended end plate 3 connect (such as in Fig. 4).After structure meets with geological process, can only it pass through Replace the board-like energy dissipating beam section of overhanging end can fast quick-recovery structure function.
As shown in figure 4, screw connector 6 is welded on the edge of a wing of non-energy dissipating beam section 5, screw connector 6 includes Screw rod 14 and nut 15.Low elastic modulus material sleeve 16 is covered on screw rod, and nut is tightened and covers low elastic modulus material sleeve 16.Screw rod Formula connector should have enough resistance to plucking rigidity, and the thickness of each sleeve should comprehensively consider the deformation of non-energy dissipating beam section and concrete slab Etc. factors.
After column, support, energy dissipating beam section and non-energy dissipating beam section are fixed, it is laid with profiled sheet 17, and above energy dissipating beam section Reserved precast floor slab position;Pre embedded bolt 8 and distribution bar 11 are arranged on profiled sheet, and low-elasticity-modulus material is covered on pre embedded bolt Expect sleeve 16, subsequent casting concrete plate 7, such as Fig. 6 and Fig. 7.It is provided on pre-buried floor 9 hole (as shown in Figure 8), and by pre- Screw rod is buried to be connected with cast-in-place concrete.The preset clearance among cast in place concrete plate and precast floor slab is filled with Bituminous hemp fiber 10, Be conducive to the rotation of precast floor slab when the deformation of energy dissipating beam section.
Construction method of the invention are as follows:
The accentric support composite floor of Self-resetting, construction method are as follows after shake of the present invention: by factory's production The board-like energy dissipating beam section of overhanging end, column, support and precast floor slab, and it is welded with the non-energy dissipating beam section of screw connector, it is transported to existing Field installs.After being laid with profiled sheet and welding pre embedded bolt, on screw connector and pre embedded bolt, according to relatively sliding Shifting demand puts on the low-elasticity-modulus sleeve of different-thickness.Concrete slab reinforcing bar and casting concrete plate are bound, to be formed such as Fig. 6 institute The non-energy dissipating beam section composite floor shown, and precast floor slab is covered on cast in place concrete plate, it is finally filled with Bituminous hemp fiber cast-in-place Gap between concrete slab and prefabricated board can form the accentric support steel frame combination building of Self-resetting after shake as shown in Figure 5 Plate.

Claims (5)

1. the accentric support steel frame composite floor of Self-resetting after a kind of shake, which is characterized in that including energy dissipating beam section composite floor, Non- energy dissipating beam section composite floor, support and column;The energy dissipating beam section composite floor includes energy dissipating beam section, ribbed stiffener, extended end plate And precast floor slab, ribbed stiffener is set in the energy dissipating beam section, extended end plate is respectively set in the both ends of the energy dissipating beam section, described pre- Floor processed is located at the top of energy dissipating beam section;The non-energy dissipating beam section composite floor includes non-energy dissipating beam section, extended end plate, screw Extended end plate, institute is arranged in connector, concrete slab, pre embedded bolt, distribution bar and profiled sheet, described non-energy dissipating beam section one end It states and is laid with the profiled sheet in non-energy dissipating beam section, the screw connector and pre embedded bolt are welded on the wing of non-energy dissipating beam section On edge, the screw connector includes screw rod and nut, and distribution bar, and casting concrete are arranged on the profiled sheet Plate;One end of the non-energy dissipating beam section is connect with supporting welding;The non-energy dissipating beam section other end and column are welded to connect;It is described to disappear It can be attached between beam section and non-energy dissipating beam section by extended end plate and high-strength bolt;The energy dissipating beam section composite floor with it is non- Gap is filled using Bituminous hemp fiber between energy dissipating beam section composite floor.
2. Self-resetting accentric support steel frame composite floor after shake according to claim 1, which is characterized in that the screw rod With the sleeve for being cased with low elastic modulus material on nut;It is isolated between the screw connector and concrete slab by sleeve.
3. Self-resetting accentric support steel frame composite floor after shake according to claim 1, which is characterized in that described is pre- Reserving hole on floor processed;The pre embedded bolt lower end and concrete junction are cased with the sleeve of low elastic modulus material.
4. Self-resetting accentric support steel frame composite floor after shake according to claim 1, which is characterized in that the distribution Reinforcing bar is located in concrete slab;There are certain gaps between the precast floor slab and non-energy dissipating beam section composite floor.
5. the construction method of Self-resetting accentric support steel frame composite floor after shake as described in claim 1, which is characterized in that Specific step is as follows:
A. the board-like energy dissipating beam section of overhanging end, the board-like non-energy dissipating beam section of overhanging end, support, column and precast floor slab are made respectively;It is described The board-like energy dissipating beam section of overhanging end includes energy dissipating beam section, ribbed stiffener and extended end plate, and ribbed stiffener is arranged in the energy dissipating beam section, described Extended end plate is respectively set in the both ends of energy dissipating beam section;The board-like non-energy dissipating beam section of overhanging end includes non-energy dissipating beam section and overhanging end Extended end plate is arranged in plate, described non-energy dissipating beam section one end;
B. non-energy dissipating beam section is attached with energy dissipating beam section by extended end plate and high-strength bolt;
C. non-energy dissipating beam section installation is in place and after top is laid with profiled sheet, and screw connector and pre embedded bolt are distinguished It is welded on non-energy dissipating beam section top flange plate, and covers low elastic modulus material sleeve on screw rod and pre embedded bolt, nut is tightened in spiral shell Low elastic modulus material sleeve is covered after on bar again;
D. distribution bar is bound;
E. casting concrete slab is located at distribution bar in concrete slab;
F. precast floor slab is covered above energy dissipating beam section, and is connect precast floor slab with concrete slab by pre embedded bolt;
G. it is filled between the concrete slab and precast floor slab using Bituminous hemp fiber.
CN201610189767.2A 2016-03-30 2016-03-30 The accentric support steel frame composite floor and its construction method of Self-resetting after a kind of shake Active CN105780994B (en)

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CN106567456A (en) * 2016-11-02 2017-04-19 南昌大学 Reaming type connecting node with replaceable energy-dissipation beam section and overhanging end plates, and construction method of the connecting node
CN106703285B (en) * 2016-12-13 2018-12-04 国核电力规划设计研究院 A kind of shearing-type accentric support active beam link structure
CN107724556A (en) * 2017-08-30 2018-02-23 国核电力规划设计研究院有限公司 A kind of flexure type eccentrically braces structure
CN110331669A (en) * 2019-07-18 2019-10-15 山东交通学院 A kind of resistance to plucking not shear stud conversion equipment and operating method
CN111636745A (en) * 2020-06-15 2020-09-08 南昌大学 Steel construction is from restoring to throne beam column combination node device

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