Anti-fatigue orthotropic plate structure and producing process

An orthotropic plate and production process technology, applied in the field of steel structure bridges and shipbuilding, to achieve the effect of extending the service life, improving the overall fatigue resistance and increasing the overall performance

Active Publication Date: 2020-08-18
SHENZHEN MUNICIPAL DESIGN & RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the quality of the orthotropic plate can only be enhanced b...

Method used

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  • Anti-fatigue orthotropic plate structure and producing process
  • Anti-fatigue orthotropic plate structure and producing process
  • Anti-fatigue orthotropic plate structure and producing process

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0042] combine figure 1 and figure 2 , is a fatigue-resistant orthotropic plate structure that greatly reduces residual welding stress disclosed in the present invention. The anti-fatigue orthotropic plate structure includes orthotropic plates. The orthotropic plate includes steel panels 2, multiple longitudinal stiffeners 3 and multiple transverse diaphragms 4. The bottom of the steel panel 2 is welded with multiple sets of longitudinal stiffeners 3 at equal intervals. . The diaphragm 4 is divided into a top diaphragm 41 and a bottom diaphragm 42 (refer to Figure 4 ), the top transverse diaphragm 41 is welded vertically to the bottom surface of the steel panel 2, and welded to the outer wall of the longitudinal stiffener 3, and the longitudinal stiffener 3 is perpendicular to the transverse diaphragm 4. Compared with the traditional heterosexual plate...

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Abstract

The invention discloses an anti-fatigue orthotropic plate structure and a manufacturing process. Design and manufacturing processes of a traditional orthotropic plate are changed and optimized. The process comprises the following steps that 1, a transverse partition plate with a certain height is welded when a panel and a longitudinal stiffening rib are welded to form an orthotropic plate, and overall rigidity of the plate is improved; 2, the longitudinal stiffening rib adopts a variable cross-section structure with a thickened end portion to increase welding strength with a bridge deck slab;3, a rib inner transverse partition plate is additionally arranged in the position, corresponding to the transverse partition plate, of the longitudinal stiffening rib, so that anti-torsion performance of the longitudinal stiffening rib is increased, and welding seam cracking of arc-shaped notches of the longitudinal stiffening rib and the transverse partition plate is eliminated; and 4, a weldedplate structure is subjected to integral annealing heat treatment, and welding residual stress generated by a large quantity of welding among the steel panel, the longitudinal stiffening rib and the transverse partition plate (beam) are eliminated. By means of comprehensive measures above, overall anti-fatigue performance of the orthotropic plate structure is greatly improved, the century difficulty of orthotropic welding seam fatigue cracking is solved, and service lives of the steel panel and a bridge are prolonged.

Description

technical field [0001] The invention relates to the technical field of steel structure bridges and shipbuilding, in particular to a fatigue-resistant orthotropic plate structure and a production process. Background technique [0002] Orthotropic plates have the characteristics of light weight, superior deformation coordination performance, good viscosity, convenient maintenance and comfortable driving, so they are widely used in the fields of long-span steel bridges and large ships at home and abroad. [0003] The traditional orthotropic plate processing is to only weld the longitudinal stiffeners during the steel panel processing, while the diaphragm needs to be welded as a whole when the steel box girder is assembled. Due to the special structural form of the orthotropic plate, a large amount of welding is required , thus generating severe welding residual stress in the weld seam and heat-affected zone, forming weak parts of material metallographic structure and mechanics,...

Claims

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Application Information

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IPC IPC(8): B23K31/02C21D9/50C21D1/30
CPCB23K31/02C21D1/30C21D9/50
Inventor 陈宜言何晓晖任自放郑凯锋代亮陈兴慧朱勤蒋华
Owner SHENZHEN MUNICIPAL DESIGN & RES INST
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