CN204298748U - The new and old bridging of a kind of bridge widening connects uses i iron diaphragm - Google Patents
The new and old bridging of a kind of bridge widening connects uses i iron diaphragm Download PDFInfo
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- CN204298748U CN204298748U CN201420686014.9U CN201420686014U CN204298748U CN 204298748 U CN204298748 U CN 204298748U CN 201420686014 U CN201420686014 U CN 201420686014U CN 204298748 U CN204298748 U CN 204298748U
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Abstract
The new and old bridging of a kind of bridge widening connects uses i iron diaphragm, and two i iron are for being arranged symmetrically between new bridge A, old bridge B; I iron one end is welded with end plate, and end plate is furnished with anchor hole, and crab-bolt is by the connection of anchor hole and new bridge A, old bridge B; The i iron other end is welded with web junction plate, web junction plate is provided with high-strength bolt hole; Two pieces of web junction plates are connected by high-strength bolt by the web junction plate of two i iron junctions; The top of two i iron and bottom outside are provided with side connecting plate outside the edge of a wing, and the top of two i iron and bottom inside are provided with edge of a wing connection plate inside; Outside the edge of a wing, two i iron to be connected by high-strength bolt and to tighten together by side connecting plate and edge of a wing connection plate inside.
Description
Technical field
The utility model relates to the new and old bridging of a kind of bridge widening and connects and use i iron diaphragm, belongs to Bridge Reconstruction technical field.
Background technology
In recent years, along with China's automobile pollution constantly increases, traffic congestion has become each metropolitan persistent ailment.The normal traffic trip of serious restriction people.Carrying out widening and improving to existing road and bridge, the old bridge traffic capacity is improved, is a kind of effective measures alleviating traffic congestion.
Bridge widening refers to the bridge in the newly-built one fixed width in Jiu Qiao one or both sides, and connects into entirety by between new and old bridge.At present, be connected with bridge deck mainly through concrete diaphragm between new and old bridge, and form of structure often keeps always with old bridge.Owing to often not allowing to suspend traffic to bridge widening transformation, old bridge vibrates larger under the impact of existing traffic loading, new bridge is the state being in geo-stationary, the Effect on Mechanical Properties of difference of vibration between new and old bridge to linkage section steel concrete is larger, linkage section concrete is easily made to produce the diseases such as cracking, faulting of slab ends, affect the comfortableness of structural safety and driving, later period maintenance, maintenance difficulty are large.
In bridge widening improvement project, way the most conventional sets up concrete diaphragm exactly between new and old bridge, first by an old bridge frange plate outer rim concrete chisel removal part, then by techniques such as bar planting, reinforcing bar binding, concretings, new and old bridging is connect in aggregates.
As shown in Figure 1, common bridge widening connecting structure comprises new bridge side bar 7, new bridge concrete diaphragm 8, new bridge central sill 9, new and old bridge concrete diaphragm 10, old bridge side bar 11, old bridge concrete diaphragm 12, new and old bridge bridge deck 13, old bridge frange plate 14; Wherein, new bridge concrete diaphragm 8 is arranged between new bridge side bar 7 and new bridge central sill 9, and old bridge concrete diaphragm 12 is connected with old bridge side bar 11; By setting up new and old bridge concrete diaphragm 10 between new and old bridge, by an old bridge frange plate 14 outer rim concrete chisel removal part, then by techniques such as bar planting, reinforcing bar binding, concretings, new and old bridging is connect the new and old bridge bridge deck 13 of formation in aggregates.
Summary of the invention
Greatly, easily make linkage section concrete produce the diseases such as cracking, faulting of slab ends to overcome difference of vibration between the new and old bridge that exists in prior art to the Effect on Mechanical Properties of linkage section steel concrete, the technical solution adopted in the utility model is that the new and old bridging of a kind of bridge widening connects and uses i iron diaphragm.
Bridge widening connection i iron diaphragm refers to as reducing the impact of vibration on linkage section cast-in-situ concrete quality, arranges i iron diaphragm 15, replace new and old bridge concrete diaphragm 10 between new and old bridge.
This i iron diaphragm 15 comprises side connecting plate 4, edge of a wing connection plate inside 5, crab-bolt 6, high-strength bolt 16 outside end plate 1, i iron 2, web junction plate 3, the edge of a wing; Two i iron 2 are for being arranged symmetrically between new bridge A, old bridge B; I iron 2 one end is welded with end plate 1, and end plate 1 is furnished with anchor hole, and crab-bolt 6 is by the connection of anchor hole and new bridge A, old bridge B; I iron 2 other end is welded with web junction plate 3, web junction plate 3 is provided with high-strength bolt hole; Two pieces of web junction plates 3 are connected by high-strength bolt 16 by the web junction plate 3 of two i iron 2 junctions; The top of two i iron 2 and bottom outside are provided with the top of side connecting plate 4, two i iron 2 outside the edge of a wing and bottom inside is provided with edge of a wing connection plate inside 5; Outside the edge of a wing, two i iron 2 to be connected by high-strength bolt 16 and to tighten together by side connecting plate 4 and edge of a wing connection plate inside 5.
Adopt i iron diaphragm to connect new and old bridge, have the following advantages:
1, i iron diaphragm self does not produce vibration by old bridge traffic loading, and construction quality is guaranteed.
2, when building new and old bridge bridge deck, new and old bridging is connected into entirety by i iron diaphragm, and rigidity is larger.Therefore, new and old bridge will produce synchronous vibration, reduce the difference of vibration between overall amplitude value and new and old bridge, reduce the impact by automobile vibration when new and old bridge bridge deck are built significantly.
3, steel beam column can prefabrication, and eliminate concrete construction formwork supporting plate, tie up the link such as reinforcing bar, pouring & maintenance, construct convenient, speed is fast.
Accompanying drawing explanation
The common bridge widening connecting structure of Fig. 1.
Fig. 2 i iron diaphragm connecting structure.
Fig. 3 i iron diaphragm connecting structure.
Fig. 4 i iron diaphragm sectional drawing.
Fig. 5 end plate detail drawing.
Fig. 6 upper flange junction plate detail drawing.
Fig. 7 lower wing plate junction plate detail drawing.
In figure: 1, end plate, 2, i iron, 3, web junction plate, 4, side connecting plate outside the edge of a wing, 5, edge of a wing connection plate inside, 6, crab-bolt, 7, new bridge side bar, 8, new bridge concrete diaphragm, 9, new bridge central sill, 10, new and old bridge concrete diaphragm, 11, old bridge side bar, 12, old bridge concrete diaphragm, 13, new and old bridge bridge deck, 14, old bridge frange plate, 15, i iron diaphragm, 16, high-strength bolt;
A, new bridge, B, Jiu Qiao.
Detailed description of the invention
As illustrated in figs. 2-7, the new and old bridging of a kind of bridge widening connects uses i iron diaphragm, bridge widening connection i iron diaphragm refers to as reducing the impact of vibration on linkage section cast-in-situ concrete quality, arranges i iron diaphragm 15, replace new and old bridge concrete diaphragm 10 between new and old bridge.
This i iron diaphragm 15 comprises side connecting plate 4, edge of a wing connection plate inside 5, crab-bolt 6, high-strength bolt 16 outside end plate 1, i iron 2, web junction plate 3, the edge of a wing; Two i iron 2 are for being arranged symmetrically between new bridge A, old bridge B; I iron 2 one end is welded with end plate 1, and end plate 1 is furnished with anchor hole, and crab-bolt 6 is by the connection of anchor hole and new bridge A, old bridge B; I iron 2 other end is welded with web junction plate 3, web junction plate 3 is provided with high-strength bolt hole; Two pieces of web junction plates 3 are connected by high-strength bolt 16 by the web junction plate 3 of two i iron 2 junctions; The top of two i iron 2 and bottom outside are provided with the top of side connecting plate 4, two i iron 2 outside the edge of a wing and bottom inside is provided with edge of a wing connection plate inside 5; Outside the edge of a wing, two i iron 2 to be connected by high-strength bolt 16 and to tighten together by side connecting plate 4 and edge of a wing connection plate inside 5.
The manufacturing process of this i iron diaphragm 15 is as follows,
(1) previous work
After new bridge substructure and main girder construction complete, take down the old bridge anticollision barrier and cut a part of frange plate concrete, retains frange plate reinforcing bar.Generally, the i iron diaphragm lengthwise position between new and old bridge is with old bridge concrete diaphragm, and quantity is consistent.Need before i iron diaphragm 15 processing and fabricating to carry out repetition measurement to on-the-spot size, guarantee machining accuracy.
(2) hole
Bury the boring of crab-bolt position underground at i iron diaphragm 15, can adopt the impact drilling, aperture 5mm larger than crab-bolt, should avoid girder presstressed reinforcing steel and main muscle during boring.Bore floating dust in Kong Houyong compressed air blowout hole, then be stained with alcohol or acetone scouring hole inwall with absorbent cotton.
(3) bar planting
In duct, inject anchoring adhesive, then crab-bolt slowly unidirectional screw-in, can not midway reverse reversion, until reinforcing bar stretches at the bottom of hole.Crab-bolt 6 treats that it solidifies completely after implanting, and can carry out next process.
(4) i iron diaphragm is installed
The i iron 2 of belt end plate 1 is inserted in crab-bolt 6, fastening nut, fixing both sides i iron.Then adopt high-strength implementing side connecting plate 4, edge of a wing connection plate inside 5 outside web junction plate 3, the edge of a wing to be connected with both sides i iron 2, form overall i iron diaphragm 15.
Claims (1)
1. the new and old bridging of bridge widening connects and uses an i iron diaphragm, it is characterized in that:
I iron diaphragm (15) is set between new and old bridge, replaces new and old bridge concrete diaphragm (10);
This i iron diaphragm (15) comprises side connecting plate (4), edge of a wing connection plate inside (5), crab-bolt (6), high-strength bolt (16) outside end plate (1), i iron (2), web junction plate (3), the edge of a wing; Two i iron (2) are for being arranged symmetrically between new bridge A, old bridge B; I iron (2) one end is welded with end plate (1), and (1) is furnished with anchor hole to end plate, and crab-bolt 6 is by the connection of anchor hole and new bridge A, old bridge B; I iron (2) other end is welded with web junction plate (3), and (3) are provided with high-strength bolt hole to web junction plate; Two pieces of web junction plates (3) are connected by high-strength bolt (16) by the web junction plate (3) of two i iron (2) junctions; The top of two i iron (2) and bottom outside are provided with side connecting plate outside the edge of a wing (4), and the top of two i iron (2) and bottom inside are provided with edge of a wing connection plate inside (5); Outside the edge of a wing, two i iron (2) to be connected by high-strength bolt (16) and to tighten together by side connecting plate (4) and edge of a wing connection plate inside (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420686014.9U CN204298748U (en) | 2014-11-15 | 2014-11-15 | The new and old bridging of a kind of bridge widening connects uses i iron diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420686014.9U CN204298748U (en) | 2014-11-15 | 2014-11-15 | The new and old bridging of a kind of bridge widening connects uses i iron diaphragm |
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| Publication Number | Publication Date |
|---|---|
| CN204298748U true CN204298748U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420686014.9U Active CN204298748U (en) | 2014-11-15 | 2014-11-15 | The new and old bridging of a kind of bridge widening connects uses i iron diaphragm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389274A (en) * | 2014-11-15 | 2015-03-04 | 北京市政路桥股份有限公司 | Joist steel diaphragm for connecting old bridge with new bridge in bridge widening |
| CN112342935A (en) * | 2020-10-29 | 2021-02-09 | 广东精特建设工程有限公司 | Construction method for connecting and widening existing bridge with wide spacing in traffic state |
-
2014
- 2014-11-15 CN CN201420686014.9U patent/CN204298748U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389274A (en) * | 2014-11-15 | 2015-03-04 | 北京市政路桥股份有限公司 | Joist steel diaphragm for connecting old bridge with new bridge in bridge widening |
| CN112342935A (en) * | 2020-10-29 | 2021-02-09 | 广东精特建设工程有限公司 | Construction method for connecting and widening existing bridge with wide spacing in traffic state |
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