CN110485278A - A kind of half stealth of falling T bent cap construction - Google Patents
A kind of half stealth of falling T bent cap construction Download PDFInfo
- Publication number
- CN110485278A CN110485278A CN201910810255.7A CN201910810255A CN110485278A CN 110485278 A CN110485278 A CN 110485278A CN 201910810255 A CN201910810255 A CN 201910810255A CN 110485278 A CN110485278 A CN 110485278A
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- bent cap
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- bracket
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 210000001364 upper extremity Anatomy 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001184547 Agrostis capillaris Species 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of half stealth of falling T bent cap construction, two sides simply supported beam is shelved on inverted T-shaped bent cap, bracket is arranged in simply supported beam central sill, two sides bracket is located above the bent cap atop part of falling T, along bridge to, it is equipped with gap between the simply supported beam central sill bracket end face of two sides, gap is equipped between the simply supported beam side bar end face of two sides, the gap is continuous by bridge floor or expansion joint structure is handled；In suitable bridge to the bent cap part of falling T is located between the simply supported beam of the left and right sides, in direction across bridge, the bent cap part of falling T is located between the side bar of two sides, and in short transverse, the bent cap part of falling T is located at below central sill bracket, so that the bent cap part of falling T is blocked by two sides simply supported beam in three above direction, reach stealthy effect.It has the advantages that the conventional bent cap of falling T building height is low, while the bent cap part of falling T can be blocked by simply supported beam, and one of gap is only remained at bridge floor, compared to the conventional bent cap of falling T, has the continuous easy construction of bridge floor, the unique advantage that road-ability is good, landscape effect is good.
Description
Technical field
The present invention relates to bridge structure design technical fields, more particularly to a kind of half stealth of falling T bent cap construction.
Background technique
Currently, simply supported beam because have many advantages, such as simple structure, be suitable for it is fast using prefabrication and assembly construction technique, speed of application, in
It is widely applied very much in small across footpath bridge.It is a kind of common bridge knot that multi-disc simply supported beam, which is shelved on inverted T-shaped bent cap,
Configuration formula, the conventional bent cap of falling T have the advantages that structure height is low, are widely used in overhead road of city, but its part of falling T and left and right
Two sides simply supported beam forms twice gap, thus brings bridge floor continuous structure construction requirement height, endurance quality bad, double at expansion joint
Seam the disadvantages of setting influence road-ability and bad appearance.
Summary of the invention
The purpose of the present invention is to provide a kind of half stealth of falling T bent cap constructions, it has the conventional bent cap of falling T building height low
The advantages of, while it after the processing of the special tectonic of simply supported beam and bent cap, the bent cap part of falling T is in top surface, facade and side
It can be blocked by simply supported beam, and only (deck expansion joint and continuous seam are compared to the common bent cap of falling T reduction one in surplus one of gap at bridge floor
Half), compared to the conventional bent cap of falling T, there is the continuous easy construction of bridge floor, the unique advantage that road-ability is good, landscape effect is good.
To achieve the goals above, technical scheme is as follows: a kind of half stealth of falling T bent cap construction, feature exist
Be shelved on inverted T-shaped bent cap in two sides simply supported beam, the upper limb at simply supported beam central sill both ends is arranged along bridge to bracket, two sides along bridge to
Bracket is located above the bent cap atop part of falling T, and direction across bridge bent cap falls T and extends partially into away from bent cap end certain distance, in bent cap
Direction across bridge end forms direction across bridge bracket, allows interval of the two sides side bar not by the part of falling T；Along bridge to two sides freely-supported
The suitable bridge of beam central sill passes through to gap, two sides simply supported beam side bar is equipped between bracket end face from the bent cap part of falling T two sides, end face
Between be equipped with gap, gap described above by bridge floor continuously or expansion joint structure handled；Along bridge to the bent cap portion of falling T
Quartile is between the simply supported beam of the left and right sides, and in direction across bridge, the bent cap part of falling T is located between the side bar of two sides, in short transverse, bent cap
The part of falling T is located at the suitable bridge of central sill to bracket lower section, so that the bent cap part of falling T is hidden by two sides simply supported beam in three above direction
Gear, reaches stealthy effect.
Further, permanent support is set on the bracket of inverted T-shaped bent cap two sides, for shelving two sides simply supported beam.
Further, in suitable bridge to beam end is i.e. along bridge between bracket root and the bent cap part of falling T in the simply supported beam of two sides
Equipped with gap；Gap is equipped between direction across bridge, simply supported beam side bar side and the bent cap surface of falling T, in short transverse, freely-supported
The suitable bridge of beam central sill between bracket bottom and the bent cap atop part of falling T be equipped with gap；Gap described above is not required to carry out bridge floor
The processing of continuous or expansion joint structure.
Further, the direction across bridge bracket of half stealth of falling T bent cap lateral ends is configured to crucial force part, prestress steel
Beam at the direction across bridge bracket under the curved shear resistance that can effectively improve bracket.
Further, stretching end is set by one end that prestressed strand extends to bent cap side, extends to bent cap bottom surface
One end be set as fixing end, avoid bent cap bottom carry out prestressed strand tensioning and sealing off and covering anchorage construction, reduce construction
Difficulty.
Another object of the present invention is to provide a kind of construction methods of half stealth of falling T bent cap construction, comprising the following steps:
A, half inverted T-shaped bent cap concrete segment of half inverted T-shaped bent cap concrete or installation is poured；
B, first prestressed strand of tensioning bent cap；
C, central sill and side bar are lifted；Two sides simply supported beam is shelved on inverted T-shaped bent cap by support, and central sill is arranged along bridge to bracket,
Two sides central sill is located above the bent cap atop part of falling T along bridge to bracket, in suitable bridge to two sides central sill is along bridge between bracket end face
Equipped with gap, gap is equipped between the simply supported beam side bar end face of two sides；
D, tensioning bent cap second batch prestressed strand；
E, bridge floor is carried out continuously to gap described in C according to design scheme or expansion joint structure is handled.
For of the invention " half stealth of falling T bent cap " is relatively conventional inverted T-shaped bent cap, the direction across bridge bent cap part of falling T not
Bent cap end is extended to, allows interval of the two sides side bar not by the part of falling T；It is low in the short transverse atop part of falling T height
In simply supported beam overhead height, central sill is passed through in such a way that bracket is arranged in top from the top of falling T.
Technical solution of the present invention has apparent technical characterstic, first, the bent cap part of falling T is blocked by two sides simply supported beam,
Achieve the effect that stealth；Second, the construction continuously stitches bridge floor through the invention and the position at expansion joint is by the routinely bent cap of falling T
Two sides simply supported beam and the part of falling T between be transferred between the simply supported beam of two sides, deck expansion joint and continuous seam are by the routinely bent cap of falling T
Twice reduce to together, performance is relatively reliable, and technique is simpler, and road-ability is more preferable；Third, when Force Calculation, lid
Beam is influenced from temperature gradient, improves safety of structure.
Detailed description of the invention
Fig. 1 be the present invention construct along bridge to facade arrangement detail (bent cap structural configuration be illustrate, be not limited to outer profile in figure
Shape)；
Fig. 2 be the present invention construction A-A optimal crosssection figure (section simply supported beam using small box girder structure as illustrate, be not limited to using
Small box girder)；
Fig. 3 be the present invention construction B-B optimal crosssection figure (section simply supported beam using small box girder structure as illustrate, be not limited to using
Small box girder).
Fig. 4 is one of the prestressed strand facade arrangement schematic diagram that the present invention constructs (bent cap structural configuration and prestress steel
The radical and shape of beam are reference, are not limited to illustrate in figure)；
Fig. 5 is two (bent cap structural configuration and prestressed strands of the prestressed strand facade arrangement schematic diagram that the present invention constructs
Radical and shape are reference, are not limited to illustrate in figure)；
Fig. 6 is the prestressed strand optimal crosssection schematic diagram (root of bent cap structural configuration and prestressed strand that the present invention constructs
Several and shape is reference, is not limited to illustrate in figure).
Specific embodiment
The invention will be further described with reference to the accompanying drawing:
The present invention is a kind of half stealth of falling T bent cap structural scheme, this construction is mainly made of following several departments: half inverted T-shaped bent cap
1, two sides simply supported beam (side bar 2a, central sill 2b), central sill are along bridge to bracket 3, two sides freely-supported beam support (contain pinner) 4, half inverted T-shaped lid
The beam part of falling T 5, the first gap 6 between direction across bridge simply supported beam side bar side and the side of falling T, simply supported beam central sill are along bridge to ox
The second gap 7, simply supported beam central sill between leg bottom and the top of falling T are along bridge between bracket end face and simply supported beam side bar end face
Between third space 8, to fall the 4th gap 9 between T, bent cap lateral for beam end (bracket root) and bent cap in the simply supported beam of two sides
The direction across bridge bracket 10 of end.
A kind of half stealth of falling T bent cap construction, specific embodiment are as follows: two sides simply supported beam (side bar 2a, central sill 2b) passes through
Support 4 is shelved on inverted T-shaped bent cap 1, in suitable bridge to the bent cap part of falling T 5 is located at left and right sides simply supported beam (side bar 2a, central sill
Between 2b), in direction across bridge, the bent cap part of falling T 5 is located between the side bar 2a of two sides, in short transverse, during the bent cap part of falling T 5 is located at
Liang Shunqiao is to the lower section of bracket 3.
The bent cap part of falling T 5 direction across bridge, along bridge to and short transverse by two sides simply supported beam (side bar 2a, central sill 2b) hide
Gear reaches stealthy landscape effect；Simultaneously bridge floor is continuously stitched and the position at expansion joint by the routinely bent cap of falling T two sides simply supported beam
It is transferred between the simply supported beam of two sides (third space 8) with (the 4th gap 9) between the part of falling T, number compares conventional inverted T-shaped lid
Beam reduces half, with the good unique advantage of the continuous easy construction of bridge floor, road-ability.
In the present invention, bent cap bottom lateral ends set direction across bridge bracket 10, and the direction across bridge bracket 10 is crucial stress
First steel beam N1 and second batch steel beam of the bent cap part of falling T is arranged in position, the bent cap direction across bridge, wherein the
Two batches of prestressed strands include the second steel beam N2 being staggered, third steel beam N3, the 4th steel beam N4 and the 5th steel beam N5, and
Two batches of prestressed strands at the direction across bridge bracket under the curved shear resistance for effectively improving bracket；
The both ends of first prestressed strand N1 are stretching end, are arranged in the side in the bent cap portion of falling T, and second batch prestress steel
One end that beam extends to bent cap side is set as stretching end, and the one end for extending to bent cap bottom surface is set as fixing end, avoids
Bent cap bottom carries out the tensioning and sealing off and covering anchorage construction of prestressed strand, reduces difficulty of construction.
A kind of half stealth of falling T bent cap construction, datail description are as follows: in suitable bridge to the central sill of two sides simply supported beam central sill 2b
It is equipped with third space 8 between 3 end face of bracket and between the end face simply supported beam side bar 2a of two sides along bridge, third space 8 is carried out
Bridge floor is continuous or expansion joint structure is handled.Along bridge to, the two sides end simply supported beam central sill 2b (central sill along bridge to 3 root of bracket) with
The 4th gap 9 is equipped between the bent cap part of falling T 5；In direction across bridge, the simply supported beam side side bar 2a and the part of falling T are equipped between 5 side
First gap 6；It is equipped with along bridge between 5 top of 3 bottom of bracket and the part of falling T in the central sill of short transverse, simply supported beam central sill 2a
Second gap 7；Above-mentioned 4th gap 9, the first gap 6, the second gap 7 are not required to carry out bridge floor continuously or expansion joint structure is handled.
A kind of half stealth of falling T bent cap construction, specific implementation step are as follows:
A, half inverted T-shaped bent cap concrete segment of half inverted T-shaped bent cap concrete or installation is poured；
B, before the construction of two sides simply supported beam, first prestressed strand (the first steel beam N1 in Fig. 4) of tensioning bent cap；
C, construct two sides simply supported beam (side bar 2a, central sill 2b) and central sill along bridge to bracket 3, two sides simply supported beam is shelved on inverted T-shaped lid
Central sill is arranged along bridge to bracket in Liang Shang, simply supported beam central sill, and two sides central sill is located above the bent cap atop part of falling T along bridge to bracket,
Along central sill from bridge to, two sides simply supported beam central sill 2b along bridge between 3 end face of the bracket and two sides end face simply supported beam side bar 2a it
Between be equipped with gap 8；
D, after the construction of two sides simply supported beam, (second batch prestressed strand includes staggeredly setting to tensioning bent cap second batch prestressed strand
The second steel beam N2, third steel beam N3, the 4th steel beam N4 and the 5th steel beam N5 set)；
E, bridge floor is carried out continuously to gap 8 described in C according to design scheme or expansion joint structure is handled.
In the present description, it is to be understood that term " on ", "lower", " two sides ", " side ", " along bridge to ", it is " horizontal
Bridge to ", " short transverse ", "top", orientation or relative positional relationship indicated by "bottom" etc. be orientation based on the figure
Or positional relationship, be merely for convenience of describing present invention construction and simplify description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, therefore be not considered as limiting the invention.
Although above describe a specific embodiment of the invention, it will be appreciated by those of skill in the art that
This is merely illustrative of, and protection scope of the present invention is that the appended claims limit.Those skilled in the art is not carrying on the back
Under the premise of from the principle and substance of the present invention content, many changes and modifications may be made, but these
Change and modification each fall within protection scope of the present invention.
Claims (6)
1. a kind of half stealth of falling T bent cap construction, it is characterised in that in two sides, simply supported beam is shelved on inverted T-shaped bent cap, in simply supported beam
The upper limb at beam both ends is arranged along bridge to bracket, and two sides are located above the bent cap atop part of falling T along bridge to bracket, and direction across bridge bent cap falls
T is extended partially into away from bent cap end certain distance, forms direction across bridge bracket in bent cap direction across bridge end, so that two sides side bar can be with
Not by the interval for the part of falling T；In suitable bridge to for the suitable bridge of two sides simply supported beam central sill to gap is equipped between bracket end face, two sides are simple
Strutbeam side bar passes through from the bent cap part of falling T two sides, gap is equipped between end face, gap described above is continuous by bridge floor or stretches
Contracting seam construction is handled；At left and right sides of being located at along bridge to, bent cap fall T part between simply supported beam, in direction across bridge, bent cap falls T
Part is between the side bar of two sides, and in short transverse, the bent cap part of falling T is located at the suitable bridge of central sill to bracket lower section, so that bent cap
The part of falling T is blocked by two sides simply supported beam in three above direction, reaches stealthy effect.
2. half stealth of falling T bent cap construction as described in claim 1, which is characterized in that be arranged forever on the bracket of inverted T-shaped bent cap two sides
Long support, for shelving two sides simply supported beam.
3. half stealth of falling T bent cap construction as described in claim 1, which is characterized in that in suitable bridge to beam-ends in the simply supported beam of two sides
Portion i.e. along bridge between bracket root and the bent cap part of falling T be equipped with gap；In direction across bridge, simply supported beam side bar side and bent cap fall T
Gap is equipped between surface, in short transverse, suitable the bridge of simply supported beam central sill to bracket bottom and the bent cap atop part of falling T it
Between be equipped with gap；Gap described above is not required to carry out bridge floor continuously or expansion joint structure is handled.
4. half stealth of falling T bent cap construction as described in claim 1, which is characterized in that the cross of half stealth of falling T bent cap lateral ends
Bridge is configured to crucial force part to bracket, prestressed strand at the direction across bridge bracket under the curved shearing resistance energy to effectively improve bracket
Power.
5. half stealth of falling T bent cap construction as claimed in claim 4, which is characterized in that prestressed strand is extended to bent cap side
The one end in face is set as stretching end, and the one end for extending to bent cap bottom surface is set as fixing end, avoids and carries out in advance in bent cap bottom
The tensioning of stress steel beam and sealing off and covering anchorage construction, reduce difficulty of construction.
6. a kind of construction method of half stealth of falling T bent cap construction, comprising the following steps:
A, half inverted T-shaped bent cap concrete segment of half inverted T-shaped bent cap concrete or installation is poured；
B, first prestressed strand of tensioning bent cap；
C, central sill and side bar are lifted；Two sides simply supported beam is shelved on inverted T-shaped bent cap by support, and central sill is arranged along bridge to bracket,
Two sides central sill is located above the bent cap atop part of falling T along bridge to bracket, in suitable bridge to two sides central sill is along bridge between bracket end face
Equipped with gap, gap is equipped between the simply supported beam side bar end face of two sides；
D, tensioning bent cap second batch prestressed strand；
E, bridge floor is carried out continuously to gap described in C according to design scheme or expansion joint structure is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810255.7A CN110485278A (en) | 2019-08-29 | 2019-08-29 | A kind of half stealth of falling T bent cap construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810255.7A CN110485278A (en) | 2019-08-29 | 2019-08-29 | A kind of half stealth of falling T bent cap construction |
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| CN110485278A true CN110485278A (en) | 2019-11-22 |
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| CN201910810255.7A Pending CN110485278A (en) | 2019-08-29 | 2019-08-29 | A kind of half stealth of falling T bent cap construction |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512929A (en) * | 2021-03-19 | 2021-10-19 | 宁波市政工程建设集团股份有限公司 | Steel-concrete combined structural hidden cover beam structure system and construction method thereof |
| CN113512932A (en) * | 2021-03-19 | 2021-10-19 | 宁波市政工程建设集团股份有限公司 | Prestressed steel beam connected prefabricated small box girder type hidden cover beam and construction method thereof |
| CN113652966A (en) * | 2021-07-13 | 2021-11-16 | 宁波市政工程建设集团股份有限公司 | Construction method of full-prefabricated assembly type concrete beam type bridge structure system |
| CN113718620A (en) * | 2021-09-27 | 2021-11-30 | 上海市政工程设计研究总院（集团）有限公司 | Novel prefabricated inverted T shuttle type bent cap structure system |
| CN113718637A (en) * | 2021-09-10 | 2021-11-30 | 上海市城市建设设计研究总院（集团）有限公司 | Bridge deck continuous structure for simply supported beam and inverted T-shaped capping beam system and construction method |
| CN114016423A (en) * | 2021-11-25 | 2022-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Construction method for simply supporting hidden cover beam and then continuously constructing small box beam |
| CN114214969A (en) * | 2021-12-01 | 2022-03-22 | 广州市市政工程设计研究总院有限公司 | Width splicing structure and method of width splicing bridge |
-
2019
- 2019-08-29 CN CN201910810255.7A patent/CN110485278A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512929A (en) * | 2021-03-19 | 2021-10-19 | 宁波市政工程建设集团股份有限公司 | Steel-concrete combined structural hidden cover beam structure system and construction method thereof |
| CN113512932A (en) * | 2021-03-19 | 2021-10-19 | 宁波市政工程建设集团股份有限公司 | Prestressed steel beam connected prefabricated small box girder type hidden cover beam and construction method thereof |
| CN113652966A (en) * | 2021-07-13 | 2021-11-16 | 宁波市政工程建设集团股份有限公司 | Construction method of full-prefabricated assembly type concrete beam type bridge structure system |
| CN113652966B (en) * | 2021-07-13 | 2022-11-25 | 宁波市政工程建设集团股份有限公司 | Construction method of full-prefabricated assembly type concrete beam type bridge structure system |
| CN113718637A (en) * | 2021-09-10 | 2021-11-30 | 上海市城市建设设计研究总院（集团）有限公司 | Bridge deck continuous structure for simply supported beam and inverted T-shaped capping beam system and construction method |
| CN113718620A (en) * | 2021-09-27 | 2021-11-30 | 上海市政工程设计研究总院（集团）有限公司 | Novel prefabricated inverted T shuttle type bent cap structure system |
| CN114016423A (en) * | 2021-11-25 | 2022-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Construction method for simply supporting hidden cover beam and then continuously constructing small box beam |
| CN114214969A (en) * | 2021-12-01 | 2022-03-22 | 广州市市政工程设计研究总院有限公司 | Width splicing structure and method of width splicing bridge |
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Inventor after: Yu Lei Inventor after: Wang Yuxiang Inventor after: Chen Yan Inventor after: Wang Tao Inventor after: Sun Qiang Inventor before: Yu Lei Inventor before: Wang Yuxiang |