CN1350094A - Device for bridge extension joint and its making process - Google Patents
Device for bridge extension joint and its making process Download PDFInfo
- Publication number
- CN1350094A CN1350094A CN 00123994 CN00123994A CN1350094A CN 1350094 A CN1350094 A CN 1350094A CN 00123994 CN00123994 CN 00123994 CN 00123994 A CN00123994 A CN 00123994A CN 1350094 A CN1350094 A CN 1350094A
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- bridge
- side bar
- iron
- shaped steel
- steel edge
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Abstract
The present invention relates to a device for expansion joint of bridge and its production method. Said device is formed from "Z"-shaped steel edge beam, I-bar, elastic material and anchor bar. It is characterized by that between two "Z"-shaped steel edge beams a unidirectional surface changeable component formed from several bars which are cut into certain length, arranged according to a certain angle and whose end face web-cavity is equipped with through hole filled with elastic material respectively is placed, and the "Z"-shaped steel edge beam is anchored into the cement concrete of two sides of said beam body by means of anchor bars. Said invented expansion joint of bridge can effectively protect bridge against injury due to leakage of rain, can make bridge surface smooth and comfortable, and can prolong the service life of bridge.
Description
The invention belongs to a kind of device that is used for shrinkage joint between bridge.
Bridge extension joint before the present invention mainly contains U-shaped zinc-iron skin formula stretching device, steel plate type stretching device, rubber stretching device etc.Wherein U-shaped zinc-iron skin formula stretching device and steel plate type stretching device are because poor-performing causes the damage of bridge construction seldom to use easily.Keeping flat rubber strip, stand up rubber bar and the board-like stretching device of rubber etc. all owing to the effect that elastomeric material directly bears load, Mo Cha and the sunlight sleet of vehicle causes damage easily in the rubber stretching device needs often to change.
The stretching device of the strip stretching device of the U.S. WBA company that at present domestic producers introduce, buried extension joint and German Mao Lesuoni company is current advanced product.Wherein the strip stretching device of WBA company and Mao Le stretching device have shown as seam to driving, it is desirable smooth comfortable that the existence in slit not only makes driving not reach, also often cleaning and cost are higher for foreign material in the seam, buried extension joint is for the seamless existence of driving, but high temperature season easily swells, low temperature season then caves in, and road-ability is had certain influence.The part deck paving contracts with absorption beam cubical expansion and the stress of displacement because its working mechanism is for the employing elastomeric material is constructed, elastomeric material need directly bear the effect of load, friction and the sunlight sleet of vehicle, performance can be swelled low gradually, also need regularly replace, material cost is higher and stroke is limited, only is applicable to the medium and small span bridge.
It is smooth comfortable, durable in use that the bridge of domestic a large amount of highway bridges, particularly high-grade highway is badly in need of a kind of driving at present, and cheap bridge extension joint.
Task of the present invention is: provide a kind of stress that can effectively absorb bridge breathing and displacement, the novel bridge stretching device of driving a vehicle smooth comfortable, durable in use and cheap.
The method that task of the present invention solves is: this device that is used for bridge expanssion joint is by " Z " shape steel side bar, i iron, the elastomeric material anchor rib is formed, it is to place in the middle of two " Z " shape steel side bar by somely being cut into certain-length, arranging by certain angle, injects the unidirectional deformed component that elastomeric material forms in the end face abdominal cavity through hole.This device is cut into certain length with i iron, and at its facade brill several holes, end face digs half garden shape groove, some i iron are pressed certain angle to be arranged in groups, inject highly elastic material and make the elastic support that forms an integral body in its abdominal cavity, through hole and the end face groove, make the unidirectional deformed component of an integral body at i iron.This assembly to being rigidity, bearing the load of vehicle, is elasticity in the direction of bridge breathing at hard Nogata, to absorb contract stress with displacement of beam cubical expansion.Assembly is packed in " Z " shaped steel matter side bar that is anchored at the both sides, shrinkage joint by certain pre compressed magnitude, and " Z " shape steel side bar is anchored in the cement concrete of beam body both sides by anchor rib.Just become rigidity seamless bridge stretching device.For keeping the firm embedding and the working stability of assembly, the end face of assembly is trapezoidal in the manufacturing, and the angle on each limit of " Z " shape side bar coincide with it and less than 90 ℃.
In the installation, can adopt special tool with assembly and side bar combination precommpression after anchoring.Also can pack into after the assembly compression after the side bar anchoring.
Accompanying drawing is one embodiment of the present of invention.
Accompanying drawing 1 is a kind of device of bridge expanssion joint and front view of method for production of being used for.
Accompanying drawing 2 is a kind of device of bridge expanssion joint and A-A view of method for production of being used for.
Accompanying drawing 3 is a kind of device of bridge expanssion joint and B-B view of method for production of being used for.
As shown in Figure 1, 2, 3: 1 " Z " shape steel side bar, 2 i iron, 3 elastomeric materials, 4 anchor ribs.
Embodiment:
The i iron 2 of high 50mm is cut into the long 290mm in top, go to the bottom trapezoidal, plane parallelogram, its angle of long 300mm is the single part of garden arc shape, the hole of 8 diameter phi 10 is bored at each 1/3rd place at the facade two ends, several i iron that cut are closely arranged and are put into mould, inject highly elastic material 3, form unidirectional deformed component, the unidirectional deformed component certain angle that tilts is slightly pressed fit in steel " Z " the shape side bar 1 that is anchored at the position, shrinkage joint in advance, at last " Z " shape steel side bar is anchored in the cement concrete of beam body both sides by anchor rib 4.Promptly become the seamless bridge stretching device.
After this stretching device was installed, because assembly has certain pre compressed magnitude, when the beam body shrank, assembly just made the assembly longitudinal tensile strain by the restorable strength of elastic support, compressed seamless generation all the time with side bar.When the beam volume expansion, side bar produces horizontal direction extruding force, the rigid material in the assembly to assembly, overcome support elastic force and with the friction of side bar, to rotating with the direction of bridge axes orientation angle increase, longitudinal length dwindles around its mid point, and swelling stress is absorbed.
When vehicle crossed this stretching device, the power that wheel rotates backward can make one of stressed i iron generation in the assembly cause longitudinal length to dwindle to rotating with bridge axes angle augment direction, and produces the trend in slit between side bar.But because the friction of whole assembly and side bar adds the active force of support elastic force sum much larger than cincture, it is stable that assembly will keep, seamless generation.The smooth comfortableness of driving a vehicle is good.
In the course of work, elastic support packs tightly rigid material all the time, and the end face resilient seals then compresses with side bar all the time, has effectively prevented the infringement of rain leakage to bridge.Because the load that elastomeric material does not directly bear vehicle is in again among the protection of i iron and side bar, and is not fragile and aging, can keep for a long time and can not change.
This stretching device can be processed into corresponding specification according to the width of bridge, and the triangle vacancy at two is with the elastomeric material polishing.Length that also can be is on demand arbitrarily cut between two i iron or is connected with adhesive, and manufacturing process is simple, and is easy for installation.
Claims (3)
1, a kind of device and method for production that is used for bridge expanssion joint, form by " Z " shape steel side bar, i iron, elastomeric material anchor rib, it is characterized in that placing in the middle of two " Z " shape steel side bar by somely being cut into certain-length, arranging, inject the unidirectional deformed component that elastomeric material forms in the end face abdominal cavity through hole by certain angle.
2, a kind of device and method for production that is used for bridge expanssion joint according to claim 1 is characterized in that unidirectional deformed component in the middle of two " Z " shape steel side bar has to be cut into the i iron that certain-length has certain angle side by side.
3, according to claim 1,2 described a kind of device and method for production that are used for bridge expanssion joint, it is characterized in that being marked with elastomeric material in i iron end face groove and the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123994 CN1350094A (en) | 2000-11-01 | 2000-11-01 | Device for bridge extension joint and its making process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123994 CN1350094A (en) | 2000-11-01 | 2000-11-01 | Device for bridge extension joint and its making process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1350094A true CN1350094A (en) | 2002-05-22 |
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ID=4590279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00123994 Pending CN1350094A (en) | 2000-11-01 | 2000-11-01 | Device for bridge extension joint and its making process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1350094A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476382B (en) * | 2009-01-21 | 2010-07-28 | 中建五局第三建设有限公司 | Construction method of angle steel angle bead dividing joint of large-area concrete floor |
| CN113174802A (en) * | 2021-04-30 | 2021-07-27 | 福建永宏建设工程有限公司 | High-bearing-capacity large-spacing joint cement pavement structure and construction method thereof |
-
2000
- 2000-11-01 CN CN 00123994 patent/CN1350094A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476382B (en) * | 2009-01-21 | 2010-07-28 | 中建五局第三建设有限公司 | Construction method of angle steel angle bead dividing joint of large-area concrete floor |
| CN113174802A (en) * | 2021-04-30 | 2021-07-27 | 福建永宏建设工程有限公司 | High-bearing-capacity large-spacing joint cement pavement structure and construction method thereof |
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