Construction and maintenance method for expansion joint of perforated plate connecting piece
A technology of perforated plate connectors and expansion joints, which is applied to bridge parts, bridge materials, bridges, etc., can solve the problems of large influence on the accuracy of expansion joints, failure of expansion joints, and small rigidity of tooth plates, etc., and meet the requirements of pre-embedded precision Low, avoid warping deformation, improve the effect of mechanical performance
Inactive Publication Date: 2021-11-30
ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD
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Problems solved by technology
However, the quality of expansion joints is worrying, easy to damage and difficult to repair have become common problems, resulting in huge economic losses
The expansion joints currently used mainly include special-shaped steel expansion joints, modular expansion joints, comb-tooth plate expansion joints, etc. The following problems exist in various types of expansion joints: 1. The installation of expansion joints is greatly affected by the accuracy of the positioning of embedded steel bars , and the construction and positioning of anchoring steel bars is difficult, which makes it difficult to install the expansion joints and the installation quality is not good; 2. There is no maintenance and repair space reserved, and the dust and debris entering the expansion joints are difficult to clean, resulting in poor drainage and water accumulation on the road section of the expansion joints , thereby affecting driving safety; 3. When the bridge is widened, the expansion joints are difficult to lengthen, and often need to be replaced as a whole, thus affecting the operation of existing road vehicles; 4. The tooth plate of the comb-tooth plate expansion joint has small rigidity and is easy to warp and deform , affecting driving safety; the bolts anchoring the comb plate are prone to loose nuts and screw breakage, resulting in failure of expansion joints and affecting driving safety
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[0049] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0050] A construction and maintenance method for expansion joints of open-hole plate connectors, such as Figure 1 to Figure 11 As shown, the expansion joints include:
[0051] Finger-shaped steel plate 4, one end of which is straight, and the other end is a finger-shaped end with a finger shape. The finger-shaped steel plate is located on both sides of the expansion joint, and the finger-shaped ends are engaged with each other. The finger-shaped steel plate includes a middle finger located in the middle of the expansion joint Shaped steel plate 41, the end finger shaped steel plate 42 that is positioned at the end of expansion joint;
[0052]Reinforced steel plate 5 is located under the finger of the finger-shaped steel plate. The reinforced steel plate includes a middle reinforced steel plate 51 located in the middle of the expansion joint, ...
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The invention provides a construction and maintenance method for the expansion joint of a perforated plate connecting piece. The method comprises the steps that an anchoring part is pre-buried on a beam body, a finger-shaped steel plate, a reinforcing steel plate, a supporting and blocking steel plate and a perforated steel plate are installed, a through steel bar penetrates through holes of the anchoring part and the perforated steel plate and stirrups, the positions of the stirrups are adjusted; then the anchoring part, the stirrups and the through steel bar are connected, an anchor is poured in an expansion joint installation groove, and maintenance is performed; an iron wire penetrates through a water-stop belt fixing groove of the supporting and blocking steel plate, then the iron wire is connected with the wing edge of the water-stop belt at one end, the iron wire is pulled at the other end, the water-stop belt is pulled to the other end along the water-stop belt fixing groove, finally the iron wire is removed, and the water-stop belt is arranged; and the end finger-shaped steel plate, the end perforated steel plates and the end reinforcing steel plate are connected together. The technical problems of installation, maintenance and the like of the expansion joint can be solved, the service life of the expansion joint is prolonged, and social cost is saved.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a method for construction and maintenance of expansion joints of open-hole plate connectors. Background technique [0002] With the rapid development of the economy, the achievements of bridge construction all over the world have also made great leaps. We know that bridge construction in the prior art is usually made of factory-like modules, and the on-site construction is mainly to "splicing and assembling" the manufactured modules. "Together. Due to the thermal expansion and contraction effect, an expansion joint is provided between two adjacent modules of the bridge, which can be used to adjust the thermal expansion and contraction of the modules. With the rapid development of my country's transportation industry, the use of bridge expansion joints is very large. However, the quality of expansion joints is worrying, easy damage and difficult to repair have become...
Claims
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IPC IPC(8): E01D19/06E01D19/08E01D101/30E01D101/26
CPCE01D19/06E01D19/083E01D19/086E01D2101/30E01D2101/26
Inventor王昌将刘德宝王桢伟
OwnerZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD