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Hot Sale Finger Type Expansion Joint to New Zealand

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Basic Info

Model No.:  Movement 120mm

Product Description

Model NO.: Movement 120mm Export Market: Global Classify: F-Wm Specification: As drawing requset HS Code: 5522233 Certificate: ISO9000 Urgent Order: Yes Trademark: Jianfeng Origin: Hebei, China Contact information
Sales Manager:     Mr.Steven
Mobile Phone:      86-15233296877
Tel:               86-318-5106277
Fax:               86-0318-5106277
Company:        Hengshui Jianfeng Engineering Rubber Co., LTD.

Comb type Bridge Expansion Joint

Comb type bridge expansion joint is to coordinate the rotate of the bridge end and longitudinal displacement caused by natural factors, for example,when the temperature changes,the bridge occurs expansion and longitudinal deformation, vehicle loading also can cause the rotate of the bridge end and longitudinal displacement. In order to let the vehicle smoothly through the bridge deck and meeting bridge deck deformation ,need setting certain flexible device at the bridge expansion joint. This device is called the bridge expansion joints. The comb type expansion joint is in order to adapt to the modern highway transportation,then development the expansion joint products with the characteristics of waterproof, dust-proof, anti-skid, anti-corrosion, prevent noise .

brand Jianfeng
type Flat Type
Used part ground
category expansion joint
technology cutting, welding, paint
expansion amount 40 60 80mm
Material structural steel
unit of measurement meter
classify F-WM

The installation steps and attention of the comb type expansion joint
1. In setting expansion joint, the rail and bridge deck pavement should disconnect . To make the construction and installation convenient, the component itself should have sufficient strength,  and should be connected to the bridge deck pavement  firmly, the special attention is, it should free deformation accordingly near the rail structure of the expansion joint  .
2.Setting out the cutting asphalt concrete .According to the width of A , pay attention to that is left and right asymmetry cutting along the girder center line  .
3.Excavation and clear clutter. The excavation depth should reach at least H value.
4. The retaining bolt positioning. Combined bolt hole with template lofting positioning, the error of screw position≤±1mm. When boring hole shall not destroy the beam body structure, such as pre-stressed pipe, steel, etc.
5. Banding and transition the bottom steel grid , set up template, pouring C40 steel fiber reinforced concrete. The top surface elevation and smoothness shall be strictly controlled , and agree with bridge longitudinal slope , the roughness should be 0 ~ 1 mm.
6. Tie the reinforcement in  the distribution of excessive segment .
7. Pouring the C40 steel fiber concrete in excessive segment .
8. Install  Water Stop neoprene sheets, stainless steel plate and the tooth profile, tightened  with a nut  . In order to prevent the screw and nut loose,must painting locking glue on the thread  , A small amount of spot welding fixed screw and nut surface ,at  last pouring waterproof and locking perfusion epoxy resin into screw hole.
9 Water curing of concrete,  prevent frostbite and keep moisture in winter .
10.Pouring waterproof ointment into the  tooth seam   .

The features of comb type bridge expansion joint:
1.The surface plate of comb type expansion joint  is non-slip channel steel plate, the bearing type structure break out from the intermesh bridge panel gap extend from left and right , having big stiffness ,can bear a large horizontal displacement,expansion amount can up to 420mm.
2. The building height of comb type expansion joint  is low. Comb type expansion joint can be installed within the height of bridge deck pavement layer,don't need  reserve rabbet  in the girder,greatly       convenient  the design and construction.
3. The applicability of the expansion joints is wide. And can be used on the new or old bridges,especially suitable for the replacement of retractor device of the old bridges' large displacement  rubber plate,  Is irreplaceable to the module type large displacement expansion joint (device) .
4. The car driving smooth, comfortable, don't jump, no noise.
5. The expansion joint component 's transportation and installation is convenient , and don't need long car transport,and don't need cranes loading and unloading.
6. The cost of the expansion joints is low ,comparing with the module type large displacement telescopic device,  it can save about 20%.

Main features of comb type expansion joint device:

Large amount of expansion and shallow buried steel comb type expansion joint device, design allows for 40 ~ 1000 mm is suitable for various expansion amount not beam structure, different span of building Bridges and old bridge rebuilding, large scale, wide scope of use.Steel comb type expansion joint device, the overall structure height 30 ~ 40 mm.All without changing the original structure of beam end, shallow buried can achieve effective anchoring strength.Under normal circumstances, the expansion amount > 80 mm, the other types of telescopic device the overall height is high, the overall height > 250 mm deformed steel telescopic device.Design, must carry on the special treatment on the beam end structure, increase the difficulty of construction at the same time as a result, large scale, shallow buried fully shows the unique technical advantages of the telescopic mechanism.

Comb type telescopic gap automatic slag removal Various types of telescopic device, a common problems generally.Telescopic gap, ash, hard plug, serious when affect the normal expansion of beam body.Steel comb type expansion joint device, due to the special processing structure, comb telescopic gap is located in a single beam end face, comb type bottom has a stainless steel board pad at the same time, ash and hard objects can only stay in surface, so that can use comb type steel telescopic process and the effect of vehicle, ash, hard objects automatically discharge telescopic gap, so as to not cause blockage, does not need manual cleaning, do not affect the normal expansion of beam body.

Has excellent waterproof and dustproof performance.Steel comb type expansion joint device set neoprene waterproof layer on the second floor, and pour out around a comb type steel telescopic gap waterproof ointment, achieve excellent waterproof and dustproof function, effectively protect the bridge structure and delay the corrosion of bearing, extend the service life of bridge.

The telescopic device and pavement performance on the whole .Steel comb type expansion joint device which is based on firm soft measures, such as more thoroughly removes the car from the structure when the conditions of the vehicle, on both sides of the telescopic device using high grade ribbon-like rigid concrete protection, good rigidity as a whole.Therefore, traffic smoothly, no impact vibration, reduce the impact of the bridge, reduce noise, prolong bridge and vehicle use fixed number of year.

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Product Categories : Bridge Expansion Joint Series > Finger Type Expansion Joint

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