CN104343203A - Novel combined beam structure based on steel-ultra-high property concrete - Google Patents
Novel combined beam structure based on steel-ultra-high property concrete Download PDFInfo
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- CN104343203A CN104343203A CN201410609029.XA CN201410609029A CN104343203A CN 104343203 A CN104343203 A CN 104343203A CN 201410609029 A CN201410609029 A CN 201410609029A CN 104343203 A CN104343203 A CN 104343203A
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Abstract
The invention relates to a novel combined beam structure based on steel-ultra-high property concrete. The novel combined beam structure comprises a plurality of steel beams in parallel, wherein concrete wing plates are arranged at the upper parts of the steel beams. By adopting the novel combined beam structure based on steel-ultra-high property concrete, the problem that the wing plates of the combined beam is cracked can be effectively solved, the durability of the combined beam structure is improved, the structure is simple, novel materials are adopted, the mechanical property is good, the good mechanical property is achieved, and the economic benefits are increased.
Description
Technical field
The present invention relates to technical field of civil, is a kind of novel compositions girder construction based on steel-ultra-high performance concrete.
Background technology
Conventional steel-concrete composite beam is by the structure exposing girder steel or steel truss girder and combined by connector (shear connector) and armored concrete slab, the type bridge is fast with its speed of application, building height is little, the advantages such as anti-seismic performance is good, are widely used in building construction and highway and Urban Bridge Construction.Due to the continuous increase of the traffic volume and heavy vehicle, add the impact of environment, shortly there is the disease problems such as steel concrete wing plate longitudinal cracking, reinforced concrete bridge deck plate Transverse Cracks, bridge deck partial fracture or the corrosion of burn into girder steel in operation in conventional steel-concrete composite beam, has a strong impact on the application life of bridge.Main cause is that common steel concrete (NRC) plate intensity is low, poor toughness, porosity are high, easily occurs damaging, reduce application life under load and environmental activity.Ultra-high performance concrete (UHPC) take fine sand as aggregate, mix a large amount of silicon ash and wait mineral admixture, high efficiency water reducing agent and micro steel fiber, a kind of high strength, high-durability, high tenacity, the closely knit concrete material that are formed, compared with common concrete, eliminate coarse aggregate (stone), be the high performance concrete that fines dense material and fiber reinforced material are composited, compressive strength and tensile strength all will exceed much than common concrete.Although UHPC performance is fine, cost is higher than common concrete a lot, and bridge deck entirely can be very uneconomical with UHPC.
Summary of the invention
The object of the invention is for above weak point, provide a kind of novel compositions girder construction based on steel-ultra-high performance concrete, improve the durability of compound beam, the novel and good mechanical properties of structure simple structure, material, has good mechanical property and economic benefit.
The scheme that technical solution problem of the present invention adopts is, a kind of novel compositions girder construction based on steel-ultra-high performance concrete, is characterized in that: comprise some girder steels arranged side by side, the top of described girder steel is provided with concrete frange plate.
Further, described concrete frange plate comprises the some ordinary concrete precast plates born between two adjacent girder steel tops, the girder steel of the seam crossing between described ordinary concrete precast plate is welded with shear connector, all built ultra-high performance concrete or ordinary concrete in seam between described ordinary concrete precast plate, ultra-high performance concrete surface layer A has been built on described ordinary concrete precast plate top.
Further, described concrete frange plate comprises the some ultra-high performance concrete precast plates born between two adjacent girder steel tops, the girder steel of the seam crossing between described ultra-high performance concrete precast plate is welded with shear connector, all built ordinary concrete layer in the top of described ultra-high performance concrete precast plate and seam, ultra-high performance concrete surface layer B has been built on described ordinary concrete layer top.
Further, described girder steel is regular tenacity steel, high strength steel or superhigh intensity steel.
Further, configuration reinforcement or not configuration reinforcement in described ultra-high performance concrete.
Compared with prior art, the present invention has following beneficial effect: should based on the durability that novel compositions girder construction utilizes the high strength of ultra-high performance concrete, high tenacity significantly improves frange plate of steel-ultra-high performance concrete, effectively can solve steel-concrete composite beam frange plate problem of Cracking, alleviate deadweight, and be combined with ordinary concrete, reach good mechanical property and economic benefit, have a very wide range of applications in the little bridge deck field across footpath bridge and Longspan Bridge prospect especially.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, patent of the present invention is further illustrated.
Fig. 1 is a kind of example structure schematic diagram of this invention;
Fig. 2 is the another kind of example structure schematic diagram of this invention;
In figure:
1-girder steel; 2-ordinary concrete precast plate; 3-ultra-high performance concrete surface layer A; 4-shear connector; 5-ultra-high performance concrete precast plate; 6-ordinary concrete layer; 7-ultra-high performance concrete surface layer B.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Fig. 1 ~ 2, a kind of novel compositions girder construction based on steel-ultra-high performance concrete, is characterized in that: comprise some girder steels 1 arranged side by side, the top of described girder steel 1 is provided with concrete frange plate.
In the present embodiment, described concrete frange plate comprises the some ordinary concrete precast plates 2 born between two adjacent girder steel 1 tops, the girder steel 1 of the seam crossing between described ordinary concrete precast plate 2 is welded with shear connector 4, all built ultra-high performance concrete or ordinary concrete in seam between described ordinary concrete precast plate 2, ultra-high performance concrete surface layer A3 has been built on described ordinary concrete precast plate 2 top.
In the present embodiment, described concrete frange plate comprises the some ultra-high performance concrete precast plates 5 born between two adjacent girder steel 1 tops, the girder steel 1 of the seam crossing between described ultra-high performance concrete precast plate 5 is welded with shear connector 4, all built ordinary concrete layer 6 in the top of described ultra-high performance concrete precast plate 5 and seam, ultra-high performance concrete surface layer B7 has been built on described ordinary concrete layer 6 top.
In the present embodiment, described girder steel 1 is regular tenacity steel, high strength steel or superhigh intensity steel.
In the present embodiment, configuration reinforcement or not configuration reinforcement in described ultra-high performance concrete.
Specific implementation process: first, ordinary concrete precast plate 2 first placed by some two adjacent girder steels 1 side by side, the girder steel 1 upper weld shear connector 4 of the seam crossing then between ordinary concrete precast plate 2, all build one deck ultra-high performance concrete or ordinary concrete in seam again between ordinary concrete precast plate 2, finally build one deck ultra-high performance concrete surface layer A3 on the top of ordinary concrete precast plate 2.Another kind of combined beam structure is first place ultra-high performance concrete precast plate 5 on some two adjacent girder steels 1 side by side, the girder steel 1 upper weld shear connector 4 of the seam crossing then between ultra-high performance concrete precast plate 5, ordinary concrete layer 6 is all built again, finally cast-in-place one deck ultra-high performance concrete surface layer B on ordinary concrete layer 6 in the top and seam of ultra-high performance concrete precast plate 5.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; be understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. based on a novel compositions girder construction for steel-ultra-high performance concrete, it is characterized in that: comprise some girder steels arranged side by side, the top of described girder steel is provided with concrete frange plate.
2. the novel compositions girder construction based on steel-ultra-high performance concrete according to claim 1, it is characterized in that: described concrete frange plate comprises the some ordinary concrete precast plates born between two adjacent girder steel tops, the girder steel of the seam crossing between described ordinary concrete precast plate is welded with shear connector, all built ultra-high performance concrete or ordinary concrete in seam between described ordinary concrete precast plate, ultra-high performance concrete surface layer A has been built on described ordinary concrete precast plate top.
3. the novel compositions girder construction based on steel-ultra-high performance concrete according to claim 1, it is characterized in that: described concrete frange plate comprises the some ultra-high performance concrete precast plates born between two adjacent girder steel tops, the girder steel of the seam crossing between described ultra-high performance concrete precast plate is welded with shear connector, all built ordinary concrete layer in the top of described ultra-high performance concrete precast plate and seam, ultra-high performance concrete surface layer B has been built on described ordinary concrete layer top.
4. the novel compositions girder construction based on steel-ultra-high performance concrete according to claim 1, is characterized in that: described girder steel is regular tenacity steel, high strength steel or superhigh intensity steel.
5. the novel compositions girder construction based on steel-ultra-high performance concrete according to claim 2,3, is characterized in that: configuration reinforcement or not configuration reinforcement in described ultra-high performance concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410609029.XA CN104343203A (en) | 2014-11-04 | 2014-11-04 | Novel combined beam structure based on steel-ultra-high property concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410609029.XA CN104343203A (en) | 2014-11-04 | 2014-11-04 | Novel combined beam structure based on steel-ultra-high property concrete |
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| CN104343203A true CN104343203A (en) | 2015-02-11 |
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| CN201410609029.XA Pending CN104343203A (en) | 2014-11-04 | 2014-11-04 | Novel combined beam structure based on steel-ultra-high property concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956205A (en) * | 2016-10-17 | 2018-04-24 | 重庆大学 | A kind of ultra-high performance concrete-normal concrete combined bridge deck |
| CN113027210A (en) * | 2021-02-05 | 2021-06-25 | 上海核工程研究设计院有限公司 | Cast-in-place ultra-high performance concrete (UHPC) combined shielding shell |
| CN113027209A (en) * | 2021-02-05 | 2021-06-25 | 上海核工程研究设计院有限公司 | Semi-fabricated ultra-high performance concrete (UHPC) combined shielding shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956205A (en) * | 2016-10-17 | 2018-04-24 | 重庆大学 | A kind of ultra-high performance concrete-normal concrete combined bridge deck |
| CN113027210A (en) * | 2021-02-05 | 2021-06-25 | 上海核工程研究设计院有限公司 | Cast-in-place ultra-high performance concrete (UHPC) combined shielding shell |
| CN113027209A (en) * | 2021-02-05 | 2021-06-25 | 上海核工程研究设计院有限公司 | Semi-fabricated ultra-high performance concrete (UHPC) combined shielding shell |
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Application publication date: 20150211 |