CN105803916B - Light-duty combined box-type bent cap of steel and ultra-high performance concrete and preparation method thereof - Google Patents
Light-duty combined box-type bent cap of steel and ultra-high performance concrete and preparation method thereof Download PDFInfo
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- CN105803916B CN105803916B CN201610192612.4A CN201610192612A CN105803916B CN 105803916 B CN105803916 B CN 105803916B CN 201610192612 A CN201610192612 A CN 201610192612A CN 105803916 B CN105803916 B CN 105803916B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses light-duty combined box-type bent cap of a kind of steel and ultra-high performance concrete and preparation method thereof, bent cap includes the hollow box body that ultra-high performance concrete is poured, the top surface of hollow box body is embedded with steel plate, shear connector of the lower surface provided with some hollow box body interiors of embedment of steel plate；The light-duty combined box-type bent cap of the steel and ultra-high performance concrete is full precast construction.Preparation method includes the steel plate of design cover girder construction form and size, making with shear connector, pours, conserves and the step of form removal using being inverted prefabrication.The light-duty combined box-type bent cap of steel and ultra-high performance concrete of the present invention has that tensile property is strong, lightweight, construct it is convenient it is rapid, the features such as be easy to lifting, easy construction, good economy performance.
Description
Technical field
The present invention relates to technical field of bridge engineering, and in particular to a kind of light-duty combined box-type of steel-ultra-high performance concrete
Bent cap and preparation method thereof.
Background technology
Bridge Pier is the important component of bridge.In Bridge Pier, bent cap is used as a lotus by superstructure
The important component formed a connecting link for passing to substructure and basis is carried, it is designed and construction has great meaning for a bridge block
Justice.
The acceleration of Urbanization Process In China is promoted, and brings a series of problem, wherein land area is nervous and traffic is gathered around
Stifled is distinct issues.Urban viaduct makes full use of city space and built extensively to solve the approach of this problem as a kind of
If.And with the construction of Urban Bridge, great cantilever bent cap enables space under bridge to make full use of, its application also increases with day.It is existing
Mainly there is under normal concrete bent cap, pre-stressed concrete coping, Cast-in-situ Beam bent cap under bent cap and precast beam in conventional bent cap.
For the construction of bridge, cast-in-place concrete bent cap not only needs the numerous and diverse bar-mat reinforcement of live colligation, also needs really
The construction quality of cast in situs bent cap is protected, the construction period is had a strong impact on.And prefabricated integral concrete bent cap, quality is very heavy,
High is required to hanging device；The bent cap of precast assembly, bring again prestressing force must in upper beam the construction of Multi-stage prestress it is difficult
Topic, while there is also the problem of loss of prestress.In addition, the tensile property of normal concrete is low, in the long-term of overloaded vehicle etc.
Easily there is direct tension cracking in the lower bent cap of effect.After bent cap cracking, rainwater, which easily penetrates into, causes inside concrete steel bar corrosion, can cause to mix
Solidifying soil further ftractures, and influences the bearing capacity of bent cap and the transmission to load.
The content of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of that prior art is present there is provided a kind of tensile property by force, again
Amount is light, construction is convenient rapidly, be easy to lifting, easy construction, the light-duty combined box-type lid of steel-ultra-high performance concrete of good economy performance
Beam, correspondingly provides a kind of preparation method of the light-duty combined box-type bent cap of the steel-ultra-high performance concrete.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of light-duty combined box-type bent cap of steel-ultra-high performance concrete, including the hollow box that ultra-high performance concrete is poured
Formula body, the top surface of the hollow box body is embedded with steel plate, and the lower surface of the steel plate is hollow box provided with some embedments
The shear connector of body interior；The light-duty combined box-type bent cap of steel-ultra-high performance concrete is full precast construction.
The light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, it is preferred that the shear connector is to be welded in
Peg or steel rod member on steel plate；Some shear connectors are evenly distributed on the lower surface of steel plate；The thickness of the steel plate is
10mm~60mm。
The light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, it is preferred that do not match somebody with somebody in the hollow box body
Put presstressed reinforcing steel.
The light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, it is preferred that the minimum of the hollow box body
Wall thickness is not less than 100mm, and the hollow rate of the hollow box body is 40% ~ 70%.
The light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, it is preferred that the bent cap is double cantilever bent caps,
Two pier stud connects bearings of double cantilever bent caps are embedded with the connector for being connected with pier stud.
The light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, it is preferred that the hollow box body cuts to become
Face structure, and be gradually reduced along the cross-sectional area of hollow box body described in pier stud connects bearing to the direction at bent cap two ends.
The light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, it is preferred that the steel plate is provided with some intervals
Correspond to first diaphragm plate that is arranged right below for bearing of respectively setting a roof beam in place in the bearing of setting a roof beam in place of arrangement, the hollow box body, it is described
Surface in hollow box body corresponding to each pier stud connects bearing is provided with the second diaphragm plate, the thickness of first diaphragm plate
For 100mm ~ 200mm, the thickness of second diaphragm plate is 200mm ~ 600mm.
The light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, it is preferred that the upper surface of the steel plate is bent cap
Upper surface, and the steel plate be rectangular slab, the hollow box body top surface be with steel plate length and width it is consistent or summary
Big rectangle face；The ultra-high performance concrete is RPC, very-high performance fibre reinforced concrete, slip casting fibre
Tie up concrete, closely knit one kind matched somebody with somebody in rib reinforced composite material and engineering latex composite material.
The light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, it is preferred that cross section the widest part of the bent cap
During 0.8m wide more than upper top surface, vertical support plate is set at hollow section.
A kind of preparation method of the light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, comprises the following steps：
（a）Design the structure type and size of the light-duty combined box-type bent cap of steel-ultra-high performance concrete；
（b）Take the steel plate consistent or smaller with the bent cap upper surface length and width designed, the uniform welding shear connections on steel plate
Part；
（c）The steel plate horizontal of shear connector will be welded with, makes shear connector upward, steel reinforcement cage is placed on steel plate,
Then installed according to the structure type and size of the bent cap of design on steel plate and pour mould, the company of setting at pier stud connects bearing
Fitting；
（d）Ultra-high performance concrete is poured in mould to pouring, high-temperature steam is carried out to the ultra-high performance concrete poured
Maintenance or natural curing；
（e）After maintenance reaches requirement, form removal completes the making of the light-duty combined box-type bent cap of steel-ultra-high performance concrete.
Compared with prior art, the advantage of the invention is that：The light-duty combined box-type of steel-ultra-high performance concrete of the present invention
Bent cap, the hollow box body top surface pre-embedded steel slab poured in ultra-high performance concrete, steel plate by shear connector with it is hollow
Box body connects to form combined box-type bent cap, and it combines the tension crack resistance that ultra-high performance concrete is better than normal concrete
The high tensile energy of energy and steel plate, the hogging moment for resisting bent cap great cantilever by steel plate is acted on, and having reached need not internally match somebody with somebody
Put deformed bar and can guarantee that bent cap has the purpose of high tensile cracking resistance, asked in the absence of numerous and diverse prestressed stretch-draw etc.
Topic, makes also simpler, more efficient, due to the group using the hollow box body and steel plate for carrying out ultra-high performance concrete
Close, the hollow rate of hollow box body can be increased in the case where ensureing performance to mitigate bent cap deadweight, beneficial to lifting and construction；
The light-duty combined box-type bent cap of the steel-ultra-high performance concrete can be obtained factory is integral prefabricated, its make easily, whole cost
Low, good economy performance.
Brief description of the drawings
Fig. 1 is the main structure diagram of the light-duty combined box-type bent cap of steel-ultra-high performance concrete in embodiment 1.
Fig. 2 is the overlooking the structure diagram of the light-duty combined box-type bent cap of steel-ultra-high performance concrete in embodiment 1.
Fig. 3 is the partial enlarged drawing of C-C sectional views in Fig. 2.
Fig. 4 be embodiment 1 in be welded with peg steel plate structural representation.
Fig. 5 is A-A sectional views in Fig. 1.
Fig. 6 is B-B sectional views in Fig. 1.
Fig. 7 is the diagrammatic cross-section that vertical support plate is set when box bent cap is laterally wide.
Fig. 8 is the main structure diagram of the light-duty combined box-type bent cap of steel-ultra-high performance concrete in embodiment 2.
Fig. 9 is the overlooking the structure diagram of the light-duty combined box-type bent cap of steel-ultra-high performance concrete in embodiment 2.
Figure 10 is the partial enlarged drawing of G-G sectional views in Fig. 9.
Figure 11 is D-D sectional views in Fig. 8.
Figure 12 is E-E sectional views in Fig. 8.
Figure 13 is F-F sectional views in Fig. 8.
Marginal data：
1st, hollow box body；2nd, steel plate；3rd, shear connector；4th, pier stud connects bearing；5th, set a roof beam in place bearing；6th, first is horizontal
Dividing plate；7th, the second diaphragm plate；8th, vertical support plate；9th, groove.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment 1：
As shown in Figures 1 to 6, the light-duty combined box-type bent cap of the steel-ultra-high performance concrete of the present embodiment, including superelevation
Presstressed reinforcing steel, the top surface of hollow box body 1 are not configured in the hollow box body 1 of energy concreting, hollow box body 1
Steel plate 2 is embedded with, the lower surface of steel plate 2 is provided with the shear connector 3 inside some hollow box bodies 1 of embedment；Steel-the superelevation
The light-duty combined box-type bent cap of performance concrete is full precast construction.
The shear connector 3 of the present embodiment is the peg being welded on steel plate 2, and some pegs are uniformly distributed in matrix form
In the lower surface of steel plate 2.Steel plate 2 and hollow box body 1 are closely connected into by the common stress of combining structure by peg.At it
In his embodiment, shear connector 3 can also be other connectors such as steel rod member.
The ultra-high performance concrete of the present embodiment（UHPC）Refer to intensity, high ductility, high tenacity, high workability, resistance to
The long good concrete of property, it is that another kind of mechanical property for relatively common concrete, high performance concrete is more excellent
Different concrete material, for example, it may be RPC, very-high performance fibre reinforced concrete, slip casting fiber coagulation
It is native, closely knit to match somebody with somebody rib reinforced composite material and engineering latex composite material etc., but preferably RPC, very-high performance fiber increase
Reinforced concrete or slip casting fiber concrete.
In the present embodiment, the minimum wall thickness (MINI W.) of hollow box body 1 is not less than 100mm, and the hollow rate of hollow box body 1 is
40%~70%.The thickness of steel plate 2 be 10mm ~ 60mm, thicken steel plate 2 make it possible increase bent cap jib-length, reach into
One step widens the purpose using space under bridge.
In the present embodiment, bent cap is double cantilever bent caps, and double cantilever bent caps have two pier stud connects bearings 4, double cantilever lids
Two pier stud connects bearings 4 of beam are embedded with the connector for being connected with pier stud, such as connecting reinforcing bar.
In the present embodiment, hollow box body 1 is variable section structure, and along pier stud connects bearing 4 to the side at bent cap two ends
It is gradually reduced to the cross-sectional area of hollow box body 1, this is gradually reduced consistent with moment of flexure to the direction at bent cap two ends.
In the present embodiment, steel plate 2, which is provided with some spaced apart bearings 5 of setting a roof beam in place, hollow box body 1, to be corresponded to respectively
Set a roof beam in place first diaphragm plate 6 that is arranged right below of bearing 5, the surface of each pier stud connects bearing 4 is corresponded in hollow box body 1
Provided with the second diaphragm plate 7, the thickness of the second diaphragm plate 7 is 2 ~ 4 times of the thickness of the first diaphragm plate 6.The lower section of bearing 5 of setting a roof beam in place is set
Diaphragm plate, the counter-force of bearing 5 that can make to set a roof beam in place swimmingly is transferred to whole box-type section, because the counter-force of bridge pier is much larger than bearing of setting a roof beam in place
5 counter-forces, thus the thickness of the second diaphragm plate 7 being located above pier stud connects bearing 4 needs increase.
The upper surface of above-mentioned steel plate 2 is the upper surface of bent cap, and steel plate 2 is rectangular slab, and the hollow box top surface of body 1 is
The rectangle face consistent with the length and width of steel plate 2.Steel plate 2 is in the top surface of hollow box body 1, utilizes the strong tension energy of steel
Power, undertakes the tension that the hogging moment of bent cap upper limb is produced.
In the present embodiment, as shown in fig. 7, as cross section the widest part of bent cap 0.8m wide more than upper top surface, at hollow section
Vertical support plate 8 is set at face, to strengthen section shearing resistance and anti-torsion ability.
A kind of preparation method of the light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, comprises the following steps：
（a）Design the structure type and size of the light-duty combined box-type bent cap of steel-ultra-high performance concrete；Wherein, bent cap
Section uses polygon variable cross-section, and bent cap top wall thickness is that the bottom wall thickness at 100mm ~ 400mm, pier stud connects bearing 4 takes
200mm ~ 500mm, the bottom wall thickness of remaining position takes 100mm ~ 300mm, and bent cap side wall thickness takes 100mm ~ 300mm；First is horizontal
The thickness of dividing plate 6 takes 100mm ~ 200mm, and the thickness of the second diaphragm plate 7 takes 200mm ~ 600mm.
（b）The steel plate 2 consistent with the bent cap upper surface length and width designed is taken, the thickness of steel plate 2 is 10mm ~ 60mm, in steel plate 2
Upper some pegs of uniform welding；
（c）The horizontal of steel plate 2 of peg will be welded with, makes peg upward, placed on steel plate 2 in hollow box body 1
Steel reinforcement cage, then installs on steel plate 2 according to the bent cap structure type and size of design and pours mould, in pier stud connects bearing 4
Place sets connector；
（d）Ultra-high performance concrete is poured in mould to pouring, high-temperature steam is carried out to the ultra-high performance concrete poured
Maintenance or natural curing；
（e）After maintenance reaches requirement, form removal completes the making of the light-duty combined box-type bent cap of steel-ultra-high performance concrete.
Embodiment 2：
As shown in Fig. 8 to Figure 13, the light-duty combined box-type bent cap of steel-ultra-high performance concrete of the present embodiment, including superelevation
Presstressed reinforcing steel, the top of hollow box body 1 are not configured in the hollow box body 1 that performance concrete is poured, hollow box body 1
Face is embedded with steel plate 2, and the lower surface of steel plate 2 is provided with the shear connector 3 inside some hollow box bodies 1 of embedment；The steel-super
The light-duty combined box-type bent cap of high performance concrete is full precast construction.
The shear connector 3 of the present embodiment is the peg being welded on steel plate 2, and some pegs are uniformly distributed in matrix form
In the lower surface of steel plate 2.Steel plate 2 and hollow box body 1 are closely connected into by the common stress of combining structure by peg.At it
In his embodiment, shear connector 3 can also be other connectors such as steel rod member.
The ultra-high performance concrete of the present embodiment（UHPC）Refer to intensity, high ductility, high tenacity, high workability, resistance to
The long good concrete of property, it is that another kind of mechanical property for relatively common concrete, high performance concrete is more excellent
Different concrete material, for example, it may be RPC, very-high performance fibre reinforced concrete, slip casting fiber coagulation
It is native, closely knit to match somebody with somebody rib reinforced composite material and engineering latex composite material etc., but preferably RPC, very-high performance fiber increase
Reinforced concrete or slip casting fiber concrete.
In the present embodiment, the minimum wall thickness (MINI W.) of hollow box body 1 is not less than 100mm, and the hollow rate of hollow box body 1 is
40%~70%.The thickness of steel plate 2 be 10mm ~ 60mm, thicken steel plate 2 make it possible increase bent cap jib-length, reach into
One step widens the purpose using space under bridge.
In the present embodiment, bent cap is double cantilever bent caps, and double cantilever bent caps have two pier stud connects bearings 4, double cantilever lids
Two pier stud connects bearings 4 of beam are embedded with the connector for being connected with pier stud, such as connecting reinforcing bar.
In the present embodiment, hollow box body 1 is variable section structure, and along pier stud connects bearing 4 to the side at bent cap two ends
It is gradually reduced to the cross-sectional area of hollow box body 1, this is gradually reduced consistent with moment of flexure to the direction at bent cap two ends.
In the present embodiment, steel plate 2, which is provided with some spaced apart bearings 5 of setting a roof beam in place, hollow box body 1, to be corresponded to respectively
Set a roof beam in place first diaphragm plate 6 that is arranged right below of bearing 5, the surface of each pier stud connects bearing 4 is corresponded in hollow box body 1
Provided with the second diaphragm plate 7, the thickness of the second diaphragm plate 7 is 2 ~ 4 times of the thickness of the first diaphragm plate 6.The lower section of bearing 5 of setting a roof beam in place is set
Diaphragm plate, the counter-force of bearing 5 that can make to set a roof beam in place swimmingly is transferred to whole box-type section, because the counter-force of bridge pier is much larger than bearing of setting a roof beam in place
5 counter-forces, thus the thickness of the second diaphragm plate 7 being located above pier stud connects bearing 4 needs increase.
The upper surface of above-mentioned steel plate 2 is the upper surface of bent cap, and steel plate 2 is rectangular slab, and the hollow box top surface of body 1 is
The bigger rectangle face with the length and width of steel plate 2.Steel plate 2 is in the top surface of hollow box body 1, utilizes the strong tension energy of steel
Power, undertakes the tension that the hogging moment of bent cap upper limb is produced, and the length and width of the hollow box top surface of body 1 is more bigger than steel plate 2
It can ensure that the attractive in appearance of bent cap surrounding.
A kind of preparation method of the light-duty combined box-type bent cap of above-mentioned steel-ultra-high performance concrete, comprises the following steps：
（a）Design the structure type and size of the light-duty combined box-type bent cap of steel-ultra-high performance concrete；Wherein, bent cap
Section uses polygon variable cross-section, and at 150mm, 200mm is uniformly being dug out in bent cap side wide above the widest part of cross section
Groove 9, the center spacing 400mm of adjacent grooves 9.
Bent cap top wall thickness is that the bottom wall thickness at 100mm ~ 400mm, pier stud connects bearing 4 takes 200mm ~ 500mm, remaining
The bottom wall thickness of position takes 100mm ~ 300mm, and bent cap side wall thickness takes 100mm ~ 300mm；The thickness of first diaphragm plate 6 takes
100mm ~ 200mm, the thickness of the second diaphragm plate 7 takes 200mm ~ 600mm.
（b）The steel plate 2 smaller with the bent cap upper surface length and width of design is taken, the thickness of steel plate 2 is 10mm ~ 60mm, in steel plate 2
Upper some pegs of uniform welding；
（c）The horizontal of steel plate 2 of peg will be welded with, makes peg upward, placed on steel plate 2 in hollow box body 1
Steel reinforcement cage, then installs on steel plate 2 according to the bent cap structure type and size of design and pours mould, in pier stud connects bearing 4
Place sets connector；
（d）Ultra-high performance concrete is poured in mould to pouring, high-temperature steam is carried out to the ultra-high performance concrete poured
Maintenance or natural curing；
（e）After maintenance reaches requirement, form removal completes the making of the light-duty combined box-type bent cap of steel-ultra-high performance concrete.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example.To those of ordinary skill in the art, the improvement and change resulting in the case where not departing from the technology of the present invention concept thereof
Change and also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of preparation method of the light-duty combined box-type bent cap of steel-ultra-high performance concrete, the steel-ultra-high performance concrete is light
Type combined box-type bent cap includes the hollow box body that ultra-high performance concrete is poured（1）, the hollow box body（1）Top
Face is embedded with steel plate（2）, the steel plate（2）Lower surface provided with the hollow box bodies of some embedments（1）Internal shear connections
Part（3）；The light-duty combined box-type bent cap of steel-ultra-high performance concrete is full precast construction；It is characterized in that：Including following step
Suddenly：
（a）Design the structure type and size of the light-duty combined box-type bent cap of steel-ultra-high performance concrete；
（b）Take the steel plate consistent with the bent cap upper surface length and width designed（2）, in steel plate（2）Upper uniform welding shear connector
（3）；
（c）Shear connector will be welded with（3）Steel plate（2）Horizontal, makes shear connector（3）Upward, in steel plate（2）It is upper to place
Steel reinforcement cage, then according to the structure type and size of the bent cap of design in steel plate（2）Upper installation pours mould, and branch is connected in pier stud
Seat（4）Place sets connector；
（d）Ultra-high performance concrete is poured in mould to pouring, high temperature steam curing is carried out to the ultra-high performance concrete poured
Or natural curing；
（e）After maintenance reaches requirement, form removal completes the making of the light-duty combined box-type bent cap of steel-ultra-high performance concrete.
2. the preparation method of the light-duty combined box-type bent cap of steel-ultra-high performance concrete according to claim 1, its feature exists
In：The shear connector（3）To be welded in steel plate（2）On peg or steel rod member；Some shear connectors（3）Uniform point
Cloth is in steel plate（2）Lower surface；The steel plate（2）Thickness be 10mm ~ 60mm.
3. the preparation method of the light-duty combined box-type bent cap of steel-ultra-high performance concrete according to claim 1, its feature exists
In：The hollow box body（1）In do not configure presstressed reinforcing steel.
4. the preparation method of the light-duty combined box-type bent cap of steel-ultra-high performance concrete according to claim 1, its feature exists
In：The hollow box body（1）Minimum wall thickness (MINI W.) be not less than 100mm, the hollow box body（1）Hollow rate for 40% ~
70%。
5. the preparation method of the light-duty combined box-type bent cap of steel-ultra-high performance concrete according to claim 1, its feature exists
In：The bent cap is double cantilever bent caps, two pier stud connects bearings of double cantilever bent caps（4）It is embedded with for being connected with pier stud
Connector.
6. the preparation method of the light-duty combined box-type bent cap of steel-ultra-high performance concrete according to claim 5, its feature exists
In：The hollow box body（1）For variable section structure, and along pier stud connects bearing（4）To sky described in the direction at bent cap two ends
The box body of the heart（1）Cross-sectional area be gradually reduced.
7. the preparation method of the light-duty combined box-type bent cap of steel-ultra-high performance concrete according to claim 5, its feature exists
In：The steel plate（2）It is provided with some spaced apart bearings of setting a roof beam in place（5）, the hollow box body（1）It is interior to correspond to each frame
Beam support（5）Be arranged right below the first diaphragm plate（6）, the hollow box body（1）It is interior to correspond to each pier stud connects bearing
（4）Surface be provided with the second diaphragm plate（7）, first diaphragm plate（6）Thickness be 100mm ~ 200mm, described second is horizontal
Dividing plate（7）Thickness be 200mm ~ 600mm.
8. the preparation method of the light-duty combined box-type bent cap of steel-ultra-high performance concrete according to claim 1, its feature exists
In：The steel plate（2）Upper surface be bent cap upper surface, and the steel plate（2）For rectangular slab, the hollow box body
（1）Top surface is and steel plate（2）The consistent or bigger rectangle face of length and width；The ultra-high performance concrete is reactive powder
Concrete, very-high performance fibre reinforced concrete, slip casting fiber concrete, it is closely knit with rib reinforced composite material and engineering gelling composite wood
One kind in material.
9. the preparation method of the light-duty combined box-type bent cap of steel-ultra-high performance concrete according to claim 1, its feature exists
In：When cross section the widest part of the bent cap is more than upper top surface wide 0.8m, vertical support plate is set at hollow section（8）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610192612.4A CN105803916B (en) | 2016-03-30 | 2016-03-30 | Light-duty combined box-type bent cap of steel and ultra-high performance concrete and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610192612.4A CN105803916B (en) | 2016-03-30 | 2016-03-30 | Light-duty combined box-type bent cap of steel and ultra-high performance concrete and preparation method thereof |
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| CN105803916A CN105803916A (en) | 2016-07-27 |
| CN105803916B true CN105803916B (en) | 2017-10-13 |
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| CN112030707A (en) * | 2020-08-26 | 2020-12-04 | 绍兴文理学院 | Assembled prefabricated steel-concrete combined capping beam and construction method thereof |
| CN112359711A (en) * | 2020-10-22 | 2021-02-12 | 山东高速集团有限公司 | Steel-concrete combined bent cap |
| CN112681155B (en) * | 2020-12-22 | 2023-05-16 | 山东高速临枣至枣木公路有限公司 | Assembled steel-UHPC combined reinforcement structure for improving shear bearing capacity of hollow slab beam and construction method thereof |
| CN114319080A (en) * | 2022-01-17 | 2022-04-12 | 宁波市高等级公路建设管理中心 | High strength bent cap structure based on UHPC shell |
| CN114673077A (en) * | 2022-03-21 | 2022-06-28 | 中铁第四勘察设计院集团有限公司 | Ultra-high performance concrete gate-type pier structure and construction method |
| CN114775404A (en) * | 2022-03-21 | 2022-07-22 | 湖南大学 | Steel beam-ultrahigh-performance concrete slab combined capping beam and construction method thereof |
| CN115182235A (en) * | 2022-08-17 | 2022-10-14 | 广州公路工程集团有限公司 | Assembly type bent cap pier column combined structure and construction method thereof |
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| JP3752999B2 (en) * | 2001-01-11 | 2006-03-08 | Ｊｆｅエンジニアリング株式会社 | Upper and lower integrated bridge and its construction method |
| CN100427683C (en) * | 2003-05-12 | 2008-10-22 | 上海市政工程设计研究院 | Wide pier with canopy beam |
| CN102561213B (en) * | 2012-02-15 | 2014-01-29 | 中南大学 | Steel plate-concrete composite structure reinforcement method of structural negative moment region |
| CN205617226U (en) * | 2016-03-30 | 2016-10-05 | 邵旭东 | Box bent cap of light -duty combination of steel - ultra high performance concrete |
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