CN103422426B - Steel work and reinforced concrete composite structure - Google Patents
Steel work and reinforced concrete composite structure Download PDFInfo
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- CN103422426B CN103422426B CN201310307748.1A CN201310307748A CN103422426B CN 103422426 B CN103422426 B CN 103422426B CN 201310307748 A CN201310307748 A CN 201310307748A CN 103422426 B CN103422426 B CN 103422426B
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Abstract
The present invention relates to great civil engineering, disclose a kind of steel work part and reinforced concrete composite structure, comprise steel work, steel connecting key and steel concrete degression type transition combination structure division, reinforced concrete structure part, described steel connecting key and steel concrete degression type transition combination structure division, two or more section is divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B the steel connecting key steel using amount of each section is by the unit length metering going deep into steel concrete (1), section A, section B ... steel connecting key steel using amount variable successively decrease gradually.The present invention along going deep into the steel using amount that steel plate is reduced in concrete direction gradually, thus makes steel work and the smooth transition of reinforced concrete structure nature continuous print, and the problem that the stress alleviating connecting portion is concentrated, has stable connection, the advantage that fatigue durability is high.
Description
Technical field
The present invention relates to great civil engineering, particularly relate to a kind of steel work and reinforced concrete composite structure.
Background technology
Current steel work and reinforced concrete composite structure are progressively applied to Bridges in Our Country engineering and association area, its combining structure key position---the connection of steel and steel concrete, and major part adopts the forms such as frange plate, Double Opening steel plate and angle steel.This type of is connected with following problem: 1, steel using amount increases, and the consumption of this class design connector accounts for 25%-50% of Wavelike steel webplate Weight of steel, and cost is high; 2, above-mentioned connection major part is gun iron link, need adopt a large amount of welding procedures, thus anti-fatigue performance and durability poor; 3, above-mentioned connector is thick and short steel plate and inserts steel concrete, isolate concrete globality on the one hand, the less spatial dimension be connected with concrete at steel on the other hand causes stress to concentrate, and does not reach the object transmitted to greatest extent by load and be assigned to steel concrete larger space.Above design causes the durability of Wavelike steel webplate and economy is lowered.
At reinforcing bar, Combined concrete connecting portion, how load transmits, how stress distributes diffusion, and keep durable, the namely durability of steel and reinforced concrete structure connecting portion and the research of fatigability, being the emphasis of Study on Composite Structure, is also that can combining structure the critical bottleneck place of extensive use.
Summary of the invention
The present invention is directed to steel work and reinforced concrete structure in prior art connection transitional region stress concentrate etc. shortcoming, provide a kind of in this connection transitional region, along going deep into the steel using amount that steel plate is reduced in concrete direction gradually, thus make steel work and the smooth transition of reinforced concrete structure nature continuous print, the problem that the stress alleviating connecting portion is concentrated, there is stable connection, the steel work that fatigue durability is high and reinforced concrete composite structure.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
Steel work and reinforced concrete composite structure, comprise steel work part, steel connecting key and steel concrete degression type transition combination structure division, reinforced concrete structure part, described steel connecting key and steel concrete degression type transition combination structure division, two or more section is divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B ... the steel connecting key steel using amount of each section measures by the unit length going deep into steel concrete, section A, section B ... steel connecting key steel using amount variable successively decrease gradually.Steel connecting key steel using amount variable=steel connecting key steel using amount/steel connecting key gos deep into the length of steel concrete.
As preferably, described steel connecting key and steel concrete degression type transition combination structure division, three are divided into upper curtate to the direction going deep into reinforced concrete structure part from steel work part, section A, section B, section C ... the steel connecting key steel using amount of each section measures by the unit length going deep into steel concrete, section A, section B, section C ... steel connecting key steel using amount variable successively decrease gradually.
As preferably, described steel connecting key and steel concrete degression type transition combination structure division, two or more section is divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B ... the steel connecting key steel using amount of each section measures by the unit length going deep into steel concrete, section A, section B ... steel connecting key steel using amount variable successively decrease gradually.
As preferably, described steel work is steel plate, steel connecting key and steel concrete degression type transition combination structure division comprise the buried section that steel concrete imbedded by steel plate, section A, section B, section C are respectively outer section of steel plate, stage casing steel plate and inner section of steel plate, buried section is provided with through hole, on outer section of steel plate, stage casing steel plate and inner section of steel plate, all via area sums are by the unit length metering going deep into steel concrete, and each section of variable increases gradually along the direction going deep into steel concrete.The method reducing steel plate steel using amount comprises the reduction thickness of steel plate and perforate on steel plate, by reducing the thickness of steel plate, outer section of steel plate thickness is made to be more than or equal to stage casing steel plate thickness, stage casing steel plate thickness is more than or equal to inner section of steel plate thickness, thus realizing steel plate along going deep into concrete direction, steel using amount reduces gradually.
As preferably, described steel connecting key and steel concrete degression type transition combination structure division, three are divided into upper curtate to the direction going deep into reinforced concrete structure part from steel work part, section A, section B, section C ... the steel connecting key steel using amount of each section measures by the unit length going deep into steel concrete, section A, section B, section C ... steel connecting key steel using amount variable successively decrease gradually.
As preferably, described steel work is steel plate, and steel connecting key and steel concrete degression type transition combination structure division comprise the buried section that steel concrete imbedded by steel plate, and buried section is along the direction going deep into steel concrete, and the thickness of steel plate reduces gradually.
Get outer section of steel plate of the same area, stage casing steel plate and inner section of steel plate, then have all via area sums on outer section of steel plate to be more than or equal to all via area sums on the steel plate of stage casing and be more than or equal to all via area sums on inner section of steel plate.Should be noted that when getting outer section of steel plate of the same area, stage casing steel plate and inner section of steel plate here, the area got wants enough large, because along going deep into concrete direction, the trend of the steel using amount of steel plate reduces, if the Area comparison got is little, the overall trend reduced gradually can not be reacted.
As preferably, arrange reinforcing bar, pouring reinforcement concrete between reinforcing bar and through hole in the through hole stated, reinforcing bar distributes to the directional divergence going deep into steel concrete by buried section.
As preferably, described reinforcing bar comprises the first reinforcing bar and the second reinforcing bar, if the first reinforcing bar, distance between the second reinforcing bar and the intersection point of buried section are d, on the second reinforcing bar, any point A is d1 to the distance of the first reinforcing bar, then have d1 >=d.
The present invention reduces from steel plate gradually to concrete steel using amount, realizes the smooth transition of Steel concrete.The steel connecting key steel using amount of each section refers to by the unit length metering going deep into steel concrete, by each section used steel total amount, gos deep into the physical length in steel concrete direction, thus obtain the variable of each section divided by each section of edge.
The present invention is owing to have employed above technical scheme, there is significant technique effect: the present invention by reducing steel using amount gradually along going deep into concrete direction in steel plate and concrete join domain, arrange the reinforcing bar launching distribution simultaneously, steel concrete larger space is assigned to be transmitted to greatest extent by load, with frictional force and bond stress for feature, after its destruction, all or part of recovery of energy, has the advantage that fatigue durability is good.
Accompanying drawing explanation
Fig. 1 inventive principle schematic diagram.
Fig. 2 is the structural representation of the embodiment of the present invention 1.
Fig. 3 is the structural representation of corrugated sheet steel.
Fig. 4 is the structural representation dispersing reinforcing bar of the embodiment of the present invention 4.
Fig. 5 is another structural representation dispersing reinforcing bar of the embodiment of the present invention 5.
The toponym that in above accompanying drawing, each number designation refers to is as follows: wherein 1-concrete, 2-steel plate, 3-through hole, 4-buried section, 7-reinforcing bar, 21-buried section, 41-outer section steel plate, 42-stage casing steel plate, 43-inner section steel plate, the 71-the first reinforcing bar, the 7-the second reinforcing bar.
Detailed description of the invention
The present invention is described in further detail with embodiment below in conjunction with accompanying drawing 1 to Fig. 5:
Embodiment 1
Steel work and reinforced concrete composite structure, as shown in Figure 1, 2, comprise steel work part, steel connecting key and steel concrete degression type transition combination structure division, reinforced concrete structure part, described steel connecting key and steel concrete degression type transition combination structure division, two sections are divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B, the steel connecting key steel using amount of each section is by the unit length metering going deep into steel concrete 1, and the steel connecting key steel using amount variable of section A, section B successively decreases gradually.Steel work is steel plate 2, and steel connecting key and steel concrete degression type transition combination structure division comprise the buried section 4 that steel concrete 1 imbedded by steel plate 2, and buried section 4 is along the direction going deep into steel concrete 1, and the thickness of steel plate 2 reduces gradually.
The buried section 4 of steel plate 2 reduces gradually along the direction thickness going deep into steel concrete 1 gradually, i.e. steel using amount also reduction gradually, its object is for realizing by steel work to the stable transition of concrete, load transmitted to greatest extent and distributes, improving the fatigue durability of steel work and reinforced concrete composite structure.
Embodiment 2
Steel work and reinforced concrete composite structure, as shown in Figure 1, 2, described steel connecting key and steel concrete degression type transition combination structure division, three sections are divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B, section C, the steel connecting key steel using amount of each section is by the unit length metering going deep into steel concrete 1, and the steel connecting key steel using amount variable of section A, section B, section C successively decreases gradually.
Steel work is steel plate 2, steel connecting key and steel concrete degression type transition combination structure division comprise the buried section 4 that steel concrete 1 imbedded by steel plate 2, section A, section B, section C are respectively outer section of steel plate 41, stage casing steel plate 42 and inner section of steel plate 43, buried section 4 is provided with through hole 3, on outer section of steel plate 41, stage casing steel plate 42 and inner section of steel plate 43, all through hole 3 area sums are by the unit length metering going deep into steel concrete 1, and each section of variable increases gradually along the direction going deep into steel concrete 1.
Buried section 4 is divided into outer section of steel plate 41 along the direction going deep into concrete 1, and stage casing steel plate 42 and inner section of steel plate 43 3 sections, outer section of steel plate 41 steel using amount is greater than stage casing steel plate 42, and stage casing steel plate 42 steel using amount is greater than inner section of steel plate 43.When through hole 3 area sums all on outer section of steel plate 41 except except the variable that obtains of the length of section steel plate 41, be greater than the variable that all through hole 3 area sums on stage casing steel plate 42 obtain divided by the length of stage casing steel plate 42; The variable that on stage casing steel plate 42, all through hole 3 area sums obtain divided by the length of stage casing steel plate 42, is greater than the variable that all through hole 3 area sums on inner section of steel plate 43 obtain divided by the length of inner section of steel plate 43.So then have the steel using amount of outer section of steel plate 41 unit length to be greater than stage casing steel plate 42 and be more than or equal to inner section of steel plate 43, namely this section steel using amount reduces gradually.The area of total through hole 3 increases, corresponding steel using amount just decreases, the quantity of itself and perforate is many, or the size of perforate increases, or the shape of the density of perforate perforate does not have inevitable relation, but can by reaching the object adjusting different section perforated area sum with upper type, the gross area of perforate increases, the real area of steel plate just decreases, and therefore meet and go deep into concrete direction along steel plate, steel using amount reduces gradually.
Embodiment 3
Steel connecting key and steel concrete degression type transition combination structure division, as shown in Figure 1, 2, three sections are divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B, section C, the steel connecting key steel using amount of each section is by the unit length metering going deep into steel concrete 1, and the steel connecting key steel using amount variable of section A, section B, section C successively decreases gradually.
Steel work is steel plate 2, steel connecting key and steel concrete degression type transition combination structure division comprise the buried section 4 that steel concrete 1 imbedded by steel plate 2, section A, section B, section C are respectively outer section of steel plate 41, stage casing steel plate 42 and inner section of steel plate 43, buried section 4 is provided with through hole 3, on outer section of steel plate 41, stage casing steel plate 42 and inner section of steel plate 43, all through hole 3 area sums are by the unit length metering going deep into steel concrete 1, and each section of variable increases gradually along the direction going deep into steel concrete 1.
Because buried section 4 is along the direction decile going deep into concrete 1, therefore outer section steel plate 41, stage casing steel plate 42 is identical with the area of inner section of steel plate 43 3 section steel plates, therefore, if select the mode of perforate on steel plate, then have, then have all through hole 3 area sums on outer section of steel plate 41 to be greater than all through hole 3 area sums on stage casing steel plate 42 and be greater than all through hole 3 area sums on inner section of steel plate 43.When other factors are identical, because the quantity of perforate is many, or the size of perforate increases, or the density of perforate increases, certainly will increase total perforated area sum, the gross area of perforate increases, and the real area of steel plate just decreases, therefore meet and go deep into concrete direction along steel plate, steel using amount reduces gradually.
When the thickness of steel plate 2 remains unchanged, adopt the mode of getting through hole 3 on steel plate 2 to reduce the steel using amount of steel plate 2, along the direction going deep into concrete 1, when other conditions are identical, what on unit area steel plate 2, through hole 3 was opened is more or closeer, can reduce the steel using amount of steel plate 2.Namely along going deep into concrete direction, the area sum of each section through hole 3 has increase tendency, and the area of through hole 3 increases, and so the real area of steel plate 2 is then in reduction, and namely the consumption of steel plate 2 is in reduction.
The shape of through hole 3 can be circular, square, triangle or other are irregularly shaped.The object arranging through hole 3, on the one hand for reducing the steel using amount of steel plate 2, also can be used on the other hand arranging reinforcing bar, realizing steel plate to concrete smooth transition.
Embodiment 4
Steel work and reinforced concrete composite structure, as shown in Fig. 1,2,4, steel connecting key and steel concrete degression type transition combination structure division, three sections are divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B, section C, the steel connecting key steel using amount of each section is by the unit length metering going deep into steel concrete 1, and the steel connecting key steel using amount variable of section A, section B, section C successively decreases gradually.
Steel work is steel plate 2, steel connecting key and steel concrete degression type transition combination structure division comprise the buried section 4 that steel concrete 1 imbedded by steel plate 2, section A, section B, section C are respectively outer section of steel plate 41, stage casing steel plate 42 and inner section of steel plate 43, buried section 4 is provided with through hole 3, on outer section of steel plate 41, stage casing steel plate 42 and inner section of steel plate 43, all through hole 3 area sums are by the unit length metering going deep into steel concrete 1, and each section of variable increases gradually along the direction going deep into steel concrete 1.
Arrange reinforcing bar 7 in through hole 3, pouring reinforcement concrete 1 between reinforcing bar 7 and through hole 3, reinforcing bar 7 distributes to the directional divergence going deep into steel concrete 1 by buried section 4.The direction that the diameter of through hole 3 gos deep into concrete 1 along steel plate 2 increases gradually.Its reason be from concrete surface layer more close to, stress is more concentrated, centralized arrangement through hole 3 also arranges reinforcing bar 7 within it, the stress of region of stress concentration is outwards transmitted by the reinforcing bar 7 that can be effectively arranged by divergent shape, thus reach the fatigue resistance improving reinforced concrete structure, extend the application life of reinforced concrete structure.
Reinforcing bar is two groups, and reinforcing bar 7 comprises the first reinforcing bar 71 and the second reinforcing bar 72, if the distance between the first reinforcing bar 71, second reinforcing bar 72 and the intersection point of buried section 4 is d, on the second reinforcing bar 72, any point A is d1 to the distance of the first reinforcing bar 71, then have d1 >=d.Namely the direction that the reinforcing bar of emitting shape distribution extends along with reinforcing bar increases gradually, and the distance between any two reinforcing bars also increases gradually.
Embodiment 5
Steel work and reinforced concrete composite structure, as shown in Fig. 1,2,3,5, steel connecting key and steel concrete degression type transition combination structure division, three sections are divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B, section C, the steel connecting key steel using amount of each section is by the unit length metering going deep into steel concrete 1, and the steel connecting key steel using amount variable of section A, section B, section C successively decreases gradually.
Steel work is steel plate 2, steel plate 2 is Wavelike steel webplate, steel connecting key and steel concrete degression type transition combination structure division comprise the buried section 4 that steel concrete 1 imbedded by steel plate 2, section A, section B, section C are respectively outer section of steel plate 41, stage casing steel plate 42 and inner section of steel plate 43, buried section 4 is provided with through hole 3, on outer section of steel plate 41, stage casing steel plate 42 and inner section of steel plate 43, all through hole 3 area sums are by the unit length metering going deep into steel concrete 1, and each section of variable increases gradually along the direction going deep into steel concrete 1.The connection of this Wavelike steel webplate combining structure, all have employed diffuse to whole spatial transition flexibly connect technology, material is conventional type reinforcing bar and peg, and welding job amount is little, constructs easy to manufacture, and fatigue durability is good, good economy performance.
Reinforcing bar 7 is arranged as three groups, and reinforcing bar 7 comprises the first reinforcing bar 71 and the second reinforcing bar 72, if the distance between the first reinforcing bar 71, second reinforcing bar 72 and the intersection point of buried section 4 is d, on the second reinforcing bar 72, any point A is d1 to the distance of the first reinforcing bar 71, then have d1 >=d.Namely in three groups or four groups of reinforcing bars, the distance between the reinforcing bar 7 of any two groups of divergent shapes distribution its all meet above-mentioned relation.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (8)
1. steel work and reinforced concrete composite structure, comprise steel work part, steel connecting key and steel concrete degression type transition combination structure division, reinforced concrete structure part, it is characterized in that: described steel connecting key and steel concrete degression type transition combination structure division, two or more section is divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B the steel connecting key steel using amount of each section is by the unit length metering going deep into steel concrete (1), section A, section B ... steel connecting key steel using amount variable successively decrease gradually, steel connecting key steel using amount variable=steel connecting key steel using amount/steel connecting key gos deep into the length of steel concrete, steel connecting key and steel concrete degression type transition combination structure division comprise the buried section (4) that steel concrete (1) imbedded by steel plate (2), steel plate (2) is corrugated sheet steel, buried section (4) is provided with multiple through hole (3), on the crest that through hole (3) is positioned at steel plate and trough, through hole (3) increases gradually along the direction going deep into steel concrete (1).
2. steel work according to claim 1 and reinforced concrete composite structure, it is characterized in that: described steel connecting key and steel concrete degression type transition combination structure division, three are divided into upper curtate to the direction going deep into reinforced concrete structure part from steel work part, section A, section B, section C ... the steel connecting key steel using amount of each section measures by the unit length going deep into steel concrete (1), section A, section B, section C ... steel connecting key steel using amount variable successively decrease gradually.
3. steel work according to claim 1 and reinforced concrete composite structure, it is characterized in that: described steel connecting key and steel concrete degression type transition combination structure division, two or more section is divided into the direction going deep into reinforced concrete structure part from steel work part, section A, section B ... the steel connecting key steel using amount of each section measures by the unit length going deep into steel concrete (1), section A, section B ... steel connecting key steel using amount variable successively decrease gradually.
4. steel work according to claim 1 and reinforced concrete composite structure, it is characterized in that: described steel connecting key and steel concrete degression type transition combination structure division, three are divided into upper curtate to the direction going deep into reinforced concrete structure part from steel work part, section A, section B, section C ... the steel connecting key steel using amount of each section measures by the unit length going deep into steel concrete (1), section A, section B, section C ... steel connecting key steel using amount variable successively decrease gradually.
5. the steel work according to claim 1 or 2 or 3 or 4 and reinforced concrete composite structure, it is characterized in that: described steel work is steel plate (2), steel connecting key and steel concrete degression type transition combination structure division comprise the buried section (4) that steel concrete (1) imbedded by steel plate (2), buried section (4) is along the direction going deep into steel concrete (1), and the thickness of steel plate (2) reduces gradually.
6. the steel work according to claim 1 or 2 or 3 or 4 and reinforced concrete composite structure, it is characterized in that: described steel work is steel plate (2), steel connecting key and steel concrete degression type transition combination structure division comprise the buried section (4) that steel concrete (1) imbedded by steel plate (2), section A, section B, section C is respectively outer section of steel plate (41), stage casing steel plate (42) and inner section of steel plate (43), buried section (4) is provided with through hole (3), outer section of steel plate (41), stage casing steel plate (42) and inner section of upper all through holes (3) the area sum of steel plate (43) are by the unit length metering going deep into steel concrete (1), each section of through hole (3) area sum variable increases gradually along the direction going deep into steel concrete (1).
7. steel work according to claim 6 and reinforced concrete composite structure, it is characterized in that: in described through hole (3), arrange reinforcing bar (7), pouring reinforcement concrete (1) between reinforcing bar (7) and through hole (3), reinforcing bar (7) distributes to the directional divergence going deep into steel concrete (1) by buried section (4).
8. steel work according to claim 7 and reinforced concrete composite structure, it is characterized in that: described reinforcing bar (7) comprises the first reinforcing bar (71) and the second reinforcing bar (72), if the first reinforcing bar (71), distance between the second reinforcing bar (72) and the intersection point of buried section (4) are d, the upper any point A of second reinforcing bar (72) is d1 to the distance of the first reinforcing bar (71), then have d1 >=d.
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| CN201310307748.1A CN103422426B (en) | 2013-07-18 | 2013-07-18 | Steel work and reinforced concrete composite structure |
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| JP3583313B2 (en) * | 1999-06-17 | 2004-11-04 | ドーピー建設工業株式会社 | Connection structure between corrugated steel plate and concrete slab in corrugated steel web PC box girder bridge |
| JP4432421B2 (en) * | 2003-09-22 | 2010-03-17 | 鹿島建設株式会社 | Concrete plate member |
| KR100684395B1 (en) * | 2006-04-06 | 2007-03-12 | 경기대학교 산학협력단 | Shear connector |
| CN201648950U (en) * | 2010-05-11 | 2010-11-24 | 天津市市政工程设计研究院 | Novel beam structure of steel-concrete combination section |
| CN202116971U (en) * | 2011-04-08 | 2012-01-18 | 湖北省交通规划设计院 | Structure of prefabricated split profile steel-concrete hybrid beam combined part |
| CN103061418B (en) * | 2013-01-14 | 2014-11-05 | 西南交通大学 | Continuous variable-stiffness shear key type steel-concrete joint section |
| CN203411889U (en) * | 2013-07-18 | 2014-01-29 | 杭州博数土木工程技术有限公司 | Steel structure and reinforced concrete combined structure |
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