CN103966947A - Beam-falling-resistant device based on bridge beam shock absorption - Google Patents
Beam-falling-resistant device based on bridge beam shock absorption Download PDFInfo
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- CN103966947A CN103966947A CN201410225035.5A CN201410225035A CN103966947A CN 103966947 A CN103966947 A CN 103966947A CN 201410225035 A CN201410225035 A CN 201410225035A CN 103966947 A CN103966947 A CN 103966947A
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Abstract
The invention discloses a beam-falling-resistant device based on bridge beam shock absorption. The beam-falling-resistant device comprises two collision-resistant blocks arranged at the bottom of a main beam and symmetrically arranged on the left side and the right side of a horizontal bearing platform of a pier; the collision-resistant blocks are concrete blocks integrated with the main beam in a cast mode; each collision-resistant block comprises a limiting boss and a limiting block located at the bottom of the corresponding limiting boss, the height of each limiting boss is identical to the distance between the bottom of the main beam and the top of the horizontal bearing platform, and elastic filler strips are distributed on the inner wall of each limiting block; a reinforcement cage is arranged in each collision-resistant block and comprises a plurality of sets of reinforced steel bars and a plurality of constructional steel bars, the reinforced steel bars are anchored in the main beam, the constructional steel bars are distributed in the longitudinal bridge direction, and each set of reinforced steel bars comprises one U-shaped steel bar and one inclined bar. The beam-falling-resistant device is simple in structure, low in manufacturing cost, convenient to construct, good in use effect and capable of not only effectively relieving impact on a beam by an earthquake but also solving the problems that an existing beam-falling-resistant device is complex in structure, high in manufacturing cost, inconvenient to construct, low in reliability and the like.
Description
Technical field
The present invention relates to a kind of anti-fall girder apparatus, especially relate to a kind of anti-fall girder apparatus based on bridge beam body damping.
Background technology
In recent years, fast development along with Bridges in Our Country and construction work, the construction work of all kinds of new structure and function continues to bring out thereupon, China has proposed special mission to bridge engineering, 5.12 Wenchuan violent earthquakes have caused huge loss, and near infrastructure Wenchuan is subject to heavy damage, and bridge collapse is particularly serious, its decline beam destroys, collision between beam body, block destroy is to cause bridge collapse and the principal mode that blocks the traffic, and this just needs to arrange subtract shock insulation and anti-fall girder apparatus.At present, the bridge anti-fall girder apparatus adopting is all to rely on to be arranged on cushion cap and anti-fall girder apparatus that crashproof block that direction across bridge is laid makes progress with vertical bridge matches and reaches the object of restrainer mostly, that is to say the crashproof block restrainer of main dependence on direction across bridge, and vertical bridge upwards adopts anti-fall girder apparatus set between beam and beam or between beam and pier to carry out spacing to beam body, the anti-fall girder apparatus that vertical bridge makes progress generally adopts and on the pre-embedded steel slab being embedded in advance on beam and pier, welds steelframe or chain, simultaneously because existing anti-fall girder apparatus all arranges separately outside beam body, thereby there is complex structure, cost is higher, construction inconvenience, the not high defect of reliability and deficiency.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of anti-fall girder apparatus based on bridge beam body damping is provided, it is simple in structure, cost is low and easy construction, result of use are good, the percussion of earthquake can be effectively alleviated, and the problems such as complex structure, cost that existing anti-fall girder apparatus exists are higher, construction is inconvenient, reliability is not high can be solved.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of anti-fall girder apparatus based on bridge beam body damping, it is characterized in that: comprise two crashproof blocks that are laid in girder bottom, described girder is supported on bridge pier, described bridge pier comprises horizontal cushion cap and the column that horizontal cushion cap is supported, and described upright supports is in horizontal cushion cap below; Two described crashproof block symmetries are laid in the left and right sides of horizontal cushion cap, and two described crashproof blocks are all along the vertical bridge of girder to laying; Described girder is concrete beam, and described crashproof block is for to build with girder the concrete block being integrated; Described crashproof block comprises positive stop lug boss and is positioned at the limited block of described positive stop lug boss bottom, the shape of cross section of described positive stop lug boss is right-angled trapezium, the shape of cross section of described limited block is rectangle, the top width of described positive stop lug boss is greater than its bottom width, and the width of described limited block is identical with the bottom width of described positive stop lug boss; The inside wall of described positive stop lug boss is outward-dipping inclined plane gradually from top to bottom, the inside wall of described limited block is vertical plane, the height of described positive stop lug boss is identical with the distance between girder bottom and horizontal cushion cap top, on the inside wall of described limited block, is laid with elastic spacer; In described crashproof block, be provided with reinforcing cage, described reinforcing cage comprises the distributing bar that many group reinforced steels and multiple tracks direction across bridge are laid, the described reinforced steel of many groups is laid from left to right along width of main beam direction, and distributing bar is fastenedly connected and is integrated by many groups of described reinforced steels described in multiple tracks; Described in every group reinforced steel include together U-shaped reinforcing bar with together with diagonal bar, described U-shaped reinforcing bar and diagonal bar are laid on same vertical plane and the two upper end all anchors in girder.
Above-mentioned a kind of anti-fall girder apparatus based on bridge beam body damping, is characterized in that: it is the reinforcing bar of d1 that described U-shaped reinforcing bar and diagonal bar all adopt diameter, and the length that described U-shaped reinforcing bar and diagonal bar anchor in girder is all not less than 10 * d1, wherein d1=10mm～20mm.
Above-mentioned a kind of anti-fall girder apparatus based on bridge beam body damping, is characterized in that: the angle between described diagonal bar and vertical plane is 10 °～20 °.
Above-mentioned a kind of anti-fall girder apparatus based on bridge beam body damping, is characterized in that: described diagonal bar is parallel laying with the inside wall of positive stop lug boss of living in.
Above-mentioned a kind of anti-fall girder apparatus based on bridge beam body damping, is characterized in that: the spacing between described limited block and horizontal cushion cap
wherein e is that the seam at set shrinkage joint on girder is wide.
Above-mentioned a kind of anti-fall girder apparatus based on bridge beam body damping, is characterized in that: the U-shaped reinforcing bar described in every group in reinforced steel and the equal colligation of diagonal bar are fixed as one.
Above-mentioned a kind of anti-fall girder apparatus based on bridge beam body damping, is characterized in that: the spacing described in the two adjacent groups of left and right between reinforced steel is 8cm～15cm.
Above-mentioned a kind of anti-fall girder apparatus based on bridge beam body damping, is characterized in that: the lateral wall of described positive stop lug boss and described limited block is laid on same vertical plane, the height a=8cm～15cm of described limited block, the width d=10cm～20cm of described limited block.
Above-mentioned a kind of anti-fall girder apparatus based on bridge beam body damping, it is characterized in that: the quantity Wei Si road of described distributing bar, described in four roads, distributing bar divides two rows to lay, the described distributing bar of every row includes distributing bar described in twice, be positioned at distributing bar described in row's twice and be fixed as one with U-shaped reinforcing bar and diagonal bar colligation respectively, be positioned at distributing bar described in lower row's twice and be all fixed as one with U-shaped reinforcing bar binding.
Above-mentioned a kind of anti-fall girder apparatus based on bridge beam body damping, is characterized in that: the length of two described crashproof blocks is all identical with the direction across bridge width of the base plate of girder.
The present invention compared with prior art has the following advantages:
1, simple in structure, reasonable in design and input cost is lower, save material.
2, easy construction, mainly forms by building with girder the crashproof block and the elastic spacer that are integrated, and because crashproof block and girder are built and be integrated, thereby reliability is high, and later maintenance cost is lower, easy construction.During practice of construction, only need pre-buriedly at the bottom of beam in main girder construction process organize reinforced steels more, after girder pouring construction completes, colligation distributing bar on pre-buried reinforced steel, concreting forms crashproof block afterwards, finally on crashproof block, pastes rubber strip.
3, in crashproof block, reasonable in design and the result of use of set reinforcing cage is good, and this reinforcing cage mainly contains multiple tracks distributing bar and many group reinforced steels form, and wherein reinforced steel is comprised of U-shaped reinforcing bar and diagonal bar.During actual use, diagonal bar can play the effect of the crashproof block root shearing of opposing.
4, result of use is good and practical value is high, can effectively cushion the impact force of earthquake to beam body, and can prevent that bridge beam body when earthquake from dropping, and the present invention simultaneously can also effectively increase the lateral stiffness of beam body.
In sum, the present invention is simple in structure, cost is low and easy construction, result of use are good, can effectively alleviate the percussion of earthquake, and can solve the problems such as complex structure, cost that existing anti-fall girder apparatus exists are higher, construction is inconvenient, reliability is not high.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is use state reference map of the present invention.
Fig. 2 is the structural representation of reinforcing cage in the crashproof block of the present invention.
Fig. 3 is the direction across bridge structural representation of reinforcing cage in the crashproof block of the present invention.
Description of reference numerals:
1-girder; 2-crashproof block; 4-1-horizontal cushion cap;
4-2-column; 5-elastic spacer; 6-1-distributing bar;
6-2-U-shaped reinforcing bar; 6-3-diagonal bar; 7-shrinkage joint;
8-bearing; 9-pinner.
The specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes two crashproof blocks 2 that are laid in girder 1 bottom, described girder 1 is supported on bridge pier, and described bridge pier comprises horizontal cushion cap 4-1 and the column 4-2 that horizontal cushion cap 4-1 is supported, and described column 4-2 is supported in horizontal cushion cap 4-1 below.Two described crashproof block 1 symmetries are laid in the left and right sides of horizontal cushion cap 4-1, and two described crashproof blocks 1 are all along the vertical bridge of girder 1 to laying.Described girder 1 is concrete beam, and described crashproof block 2 is for to build with girder 1 the concrete block being integrated.Described crashproof block 2 comprises positive stop lug boss and is positioned at the limited block of described positive stop lug boss bottom, the shape of cross section of described positive stop lug boss is right-angled trapezium, the shape of cross section of described limited block is rectangle, the top width of described positive stop lug boss is greater than its bottom width, and the width of described limited block is identical with the bottom width of described positive stop lug boss; The inside wall of described positive stop lug boss is outward-dipping inclined plane gradually from top to bottom, the inside wall of described limited block is vertical plane, the height of described positive stop lug boss is identical with the distance between girder 1 bottom and horizontal cushion cap 4-1 top, is laid with elastic spacer 5 on the inside wall of described limited block.In described crashproof block 2, be provided with reinforcing cage, described reinforcing cage comprises the distributing bar 6-1 that many group reinforced steels and multiple tracks direction across bridge are laid, the described reinforced steel of many groups is laid from left to right along girder 1 width, and distributing bar 6-1 is fastenedly connected and is integrated by many groups of described reinforced steels described in multiple tracks.Described in every group reinforced steel include together U-shaped reinforcing bar 6-2 with together with diagonal bar 6-3, described U-shaped reinforcing bar 6-2 and diagonal bar 6-3 are laid on same vertical plane and the two upper end all anchors in girder 1.
In the present embodiment, the length of two described crashproof blocks 2 is all identical with the direction across bridge width of the base plate of girder 1.
In the present embodiment, organize described reinforced steel more and be even laying, organize the laying spacing of described reinforced steel on direction across bridge is 15cm left and right more.
In the present embodiment, U-shaped reinforcing bar 6-2 and the equal colligation of diagonal bar 6-3 described in every group in reinforced steel are fixed as one.
In the present embodiment, the quantity Wei Si road of described distributing bar 6-1, described in four roads, distributing bar 6-1 divides two rows to lay, the described distributing bar 6-1 of every row includes distributing bar 6-1 described in twice, be positioned at distributing bar 6-1 described in row's twice and be fixed as one with U-shaped reinforcing bar 6-2 and diagonal bar 6-3 colligation respectively, be positioned at distributing bar 6-1 described in lower row's twice and be all fixed as one with U-shaped reinforcing bar 6-2 colligation.
During practice of construction, can according to specific needs, the quantity of distributing bar 6-1 be adjusted accordingly.
In the present embodiment, it is upper that described girder 1 is supported in horizontal cushion cap 4-1 by bearing 8, on described horizontal cushion cap 4-1, is provided with pinner 9, and described bearing 8 is laid on pinner 9.The height b of described positive stop lug boss is the height sum of bearing 8 and pinner 9.
In the present embodiment, the lateral wall of described positive stop lug boss and described limited block is laid on same vertical plane.
During practice of construction, it is the reinforcing bar of d1 that described U-shaped reinforcing bar 6-2 and diagonal bar 6-3 all adopt diameter, and the length that described U-shaped reinforcing bar 6-2 and diagonal bar 6-3 anchor in girder 1 is all not less than 10 * d1, wherein d1=10mm～20mm.
In the present embodiment, described diagonal bar 6-3 is parallel laying with the inside wall of positive stop lug boss of living in.
During practice of construction, the angle between described diagonal bar 6-3 and vertical plane is 10 °～20 °.Spacing described in the two adjacent groups of left and right between reinforced steel is 8cm～15cm.Height a=8cm～the 15cm of described limited block, the width d=10cm～20cm of described limited block.Spacing between described limited block and horizontal cushion cap 4-1
wherein e is that the seam at set shrinkage joint 7 on girder 1 is wide.
In the present embodiment, the angle between described diagonal bar 6-3 and vertical plane is 15 °, and the spacing described in the two adjacent groups of left and right between reinforced steel is 10cm.The height a=10cm of described limited block, the width d=15cm of described limited block.During practice of construction, can according to specific needs, the height of the spacing between reinforced steel described in the angle between described diagonal bar 6-3 and vertical plane, left and right two adjacent groups, described limited block and width etc. be adjusted accordingly.
In the present embodiment, organize described reinforced steel more and be even laying.
In the present embodiment, described elastic spacer 5 is rubber strip, and the width of described rubber strip is that 10cm and its length are identical with the length of crashproof block 2.
In practice of construction process, also can adopt the elastic strip of type.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (10)
1. the anti-fall girder apparatus based on bridge beam body damping, it is characterized in that: comprise two crashproof blocks (2) that are laid in girder (1) bottom, described girder (1) is supported on bridge pier, the column (4-2) that described bridge pier comprises horizontal cushion cap (4-1) and horizontal cushion cap (4-1) is supported, described column (4-2) is supported in horizontal cushion cap (4-1) below; Two described crashproof blocks (2) symmetry is laid in the left and right sides of horizontal cushion cap (4-1), and two described crashproof blocks (2) are all along the vertical bridge of girder (1) to laying; Described girder (1) is concrete beam, and described crashproof block (2) is for to build with girder (1) the concrete block being integrated; Described crashproof block (2) comprises positive stop lug boss and is positioned at the limited block of described positive stop lug boss bottom, the shape of cross section of described positive stop lug boss is right-angled trapezium, the shape of cross section of described limited block is rectangle, the top width of described positive stop lug boss is greater than its bottom width, and the width of described limited block is identical with the bottom width of described positive stop lug boss; The inside wall of described positive stop lug boss is outward-dipping inclined plane gradually from top to bottom, the inside wall of described limited block is vertical plane, the height of described positive stop lug boss is identical with the distance between girder (1) bottom and horizontal cushion cap (4-1) top, is laid with elastic spacer (5) on the inside wall of described limited block; In described crashproof block (2), be provided with reinforcing cage, described reinforcing cage comprises the distributing bar (6-1) that many group reinforced steels and multiple tracks direction across bridge are laid, the described reinforced steel of many groups is laid from left to right along girder (1) width, and distributing bar (6-1) is fastenedly connected and is integrated by many groups of described reinforced steels described in multiple tracks; Described in every group, reinforced steel includes U-shaped reinforcing bar (6-2) and together diagonal bar (6-3) together, and described U-shaped reinforcing bar (6-2) and diagonal bar (6-3) are laid on same vertical plane and the two upper end all anchors in girder (1).
2. according to a kind of anti-fall girder apparatus based on bridge beam body damping claimed in claim 1, it is characterized in that: it is the reinforcing bar of d1 that described U-shaped reinforcing bar (6-2) and diagonal bar (6-3) all adopt diameter, the length that described U-shaped reinforcing bar (6-2) and diagonal bar (6-3) anchor in girder (1) is all not less than 10 * d1, wherein d1=10mm～20mm.
3. according to a kind of anti-fall girder apparatus based on bridge beam body damping described in claim 1 or 2, it is characterized in that: the angle between described diagonal bar (6-3) and vertical plane is 10 °～20 °.
4. according to a kind of anti-fall girder apparatus based on bridge beam body damping described in claim 1 or 2, it is characterized in that: described diagonal bar (6-3) is parallel laying with the inside wall of positive stop lug boss of living in.
5. according to a kind of anti-fall girder apparatus based on bridge beam body damping described in claim 1 or 2, it is characterized in that: the spacing between described limited block and horizontal cushion cap (4-1)
, wherein e is that on girder (1), the seam at set shrinkage joint (7) is wide.
6. according to a kind of anti-fall girder apparatus based on bridge beam body damping described in claim 1 or 2, it is characterized in that: the U-shaped reinforcing bar (6-2) described in every group in reinforced steel and diagonal bar (6-3) all colligation are fixed as one.
7. according to a kind of anti-fall girder apparatus based on bridge beam body damping described in claim 1 or 2, it is characterized in that: the spacing described in the two adjacent groups of left and right between reinforced steel is 8cm～15cm.
8. according to a kind of anti-fall girder apparatus based on bridge beam body damping described in claim 1 or 2, it is characterized in that: the lateral wall of described positive stop lug boss and described limited block is laid on same vertical plane, height a=8cm～the 15cm of described limited block, the width d=10cm～20cm of described limited block.
9. according to a kind of anti-fall girder apparatus based on bridge beam body damping described in claim 1 or 2, it is characterized in that: the quantity Wei Si road of described distributing bar (6-1), distributing bar described in four roads (6-1) minute two rows are laid, the described distributing bar of every row (6-1) includes distributing bar (6-1) described in twice, be positioned at distributing bar (6-1) described in row's twice and be fixed as one with U-shaped reinforcing bar (6-2) and diagonal bar (6-3) colligation respectively, be positioned at distributing bar (6-1) described in lower row's twice and be all fixed as one with U-shaped reinforcing bar (6-2) colligation.
10. according to a kind of anti-fall girder apparatus based on bridge beam body damping described in claim 1 or 2, it is characterized in that: the length of two described crashproof blocks (2) is all identical with the direction across bridge width of the base plate of girder (1).
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| CN201410225035.5A CN103966947B (en) | 2014-05-24 | 2014-05-24 | A kind of anti-fall girder apparatus based on bridge beam body damping |
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| CN106758777A (en) * | 2017-01-22 | 2017-05-31 | 重庆交通大学 | It is a kind of for preventing bridge main beam in the position limiting structure of earthquake decline beam |
| CN106758778A (en) * | 2017-01-22 | 2017-05-31 | 重庆交通大学 | The scalable anti-fall beam construction progressively consumed energy |
| CN108385546A (en) * | 2018-02-06 | 2018-08-10 | 北京工业大学 | Winding rope anti-fall girder apparatus for bridge strengthening |
| CN108468268A (en) * | 2018-02-06 | 2018-08-31 | 北京工业大学 | Winding rope anti-fall girder apparatus for newly building bridge |
| CN110175426A (en) * | 2019-05-31 | 2019-08-27 | 中铁二院工程集团有限责任公司 | Railroad bridge Elasto-plastic Metal limits shock absorption energy consuming device design method |
| CN112523070A (en) * | 2020-12-16 | 2021-03-19 | 重庆交通大学 | Public road bridge roof beam stop device that falls is prevented to bridge |
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| CN108385546A (en) * | 2018-02-06 | 2018-08-10 | 北京工业大学 | Winding rope anti-fall girder apparatus for bridge strengthening |
| CN108468268A (en) * | 2018-02-06 | 2018-08-31 | 北京工业大学 | Winding rope anti-fall girder apparatus for newly building bridge |
| CN110175426A (en) * | 2019-05-31 | 2019-08-27 | 中铁二院工程集团有限责任公司 | Railroad bridge Elasto-plastic Metal limits shock absorption energy consuming device design method |
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| CN112523070A (en) * | 2020-12-16 | 2021-03-19 | 重庆交通大学 | Public road bridge roof beam stop device that falls is prevented to bridge |
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Inventor after: Wu Fangwen Inventor after: Xue Chengfeng Inventor after: Shen Lin Inventor after: Yang Caofang Inventor after: Ji Zhengdi Inventor after: Shi Jun Inventor after: Xu Chao Inventor before: Wu Fangwen Inventor before: Xue Chengfeng Inventor before: Yang Caofang Inventor before: Ji Zhengdi Inventor before: Shi Jun Inventor before: Xu Chao |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WU FANGWEN XUE CHENGFENG YANG CAOFANG JI ZHENGDI SHI JUN XU CHAO TO: WU FANGWEN XUE CHENGFENG SHEN LIN YANG CAOFANG JI ZHENGDI SHI JUN XU CHAO |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20200524 |
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| CF01 | Termination of patent right due to non-payment of annual fee |