A Bridge Expansion Joint Structure with Span Slabs
A technology of expansion joints and cross-joint plates, which is applied in bridges, bridge parts, bridge construction, etc., can solve problems such as expansion joint deformation displacement dislocation or limitation, expansion joint health effects, expansion joint joint damage, etc., to achieve convenient and fast construction , Excellent waterproof and anti-seepage performance, good waterproof performance
Active Publication Date: 2017-01-04
ZHEJIANG UNIV OF TECH
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Problems solved by technology
[0002] Most of the existing bridge expansion joint structures are directly exposed. Due to long-term exposure to air, dust, debris, vehicle exhaust and acid rain, they are gradually damaged and their service life is greatly reduced.
At the same time, the repeated impact of the vehicle for a long time will also have a serious impact on the health of the expansion joint.
The combined effect of these factors can lead to damage to expansion joint joints (cracking damage to concrete joints or corrosion damage to steel joints), damage to bridge metal components such as steel plates, and displacement or limitation of deformation and displacement of expansion joints.
In the worst case, the accumulation of these defects and damages can lead to failure and even collapse of the bridge structure
Method used
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Embodiment Construction
[0037] Referring to the accompanying drawings, a bridge expansion joint structure with a spanning plate includes an expansion joint 2 and a sealing structure arranged on the expansion joint 2, and the gap between two adjacent beam plates 1 forms an expansion joint 2, A bridge deck pavement 3 is laid on each beam slab 1, and the bridge deck pavement 3 is shorter than the beam slab 1 to leave an installation gap, which is characterized in that:
[0038] The sealing structure includes a seam-spanning plate 4 and a sealant layer 5;
[0039] The seam-span board 4 is laid on the expansion joint 2 and completely covers the expansion joint 2; the adjacent girder slabs 1 and the deck pavement layers 3 respectively laid are enclosed on the seam-span board 4 A seal groove is formed, the silicone foam sealant is filled in the seal groove, and the upper surface of the sealant layer 5 formed by the silicone foam sealant and the upper surface of the bridge deck pavement layer 3 on the same ...
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The invention discloses a bridge expansion joint structure provided with a joint-crossing plate. The bridge expansion joint structure comprises an expansion joint and a sealing structure arranged on the expansion joint, the expansion joint is formed by a space between two adjacent beam plates, a bridge deck pavement layer is laid on each beam plate, each bridge deck pavement layer is shorter than the corresponding beam plate so that mounting gaps can be reserved, and the sealing structure comprises the joint-crossing plate and a sealant layer; the joint-crossing plate is laid on the expansion joint and covers up the expansion joint completely; each of the adjacent beam plates and the corresponding laid bridge deck pavement layer are jointed in an enclosed mode on the joint-crossing plate, so that a sealing groove is formed, the sealing groove is filled with silicone foam sealant, and the upper surface of the sealant layer formed by the silicone foam sealant and the upper surface of the bridge deck pavement layer are located on the same plane; the width of the joint-crossing plate is shorter than that of the sealing groove, and the two sides of the joint-crossing plate are both connected with the silicone foam sealant; the silicone foam sealant comprises a silicone sealant white constituent, a silicone sealant gray constituent, a cross-linking agent, water and a platinum catalyst.
Description
technical field [0001] The invention relates to a bridge expansion joint structure with a spanning plate. Background technique [0002] Most of the existing bridge expansion joint structures are directly exposed. Due to long-term exposure to air, dust, debris, vehicle exhaust and acid rain, they are gradually damaged and their service life is greatly reduced. At the same time, the repeated impact of the vehicle for a long time will also have a serious impact on the health of the expansion joint. The combined effect of these factors can lead to damage to expansion joint joints (cracking damage to concrete joints or corrosion damage to steel joints), damage to bridge metal components such as steel plates, and displacement or limitation of deformation and displacement of expansion joints. In the worst case, the accumulation of these defects and damages can lead to failure or even collapse of the bridge structure. Contents of the invention [0003] In order to overcome the a...
Claims
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IPC IPC(8): E01D19/06C09J183/04E01D101/40
Inventor 卢彭真冯亮洪方剑
Owner ZHEJIANG UNIV OF TECH