A skateboard design optimization method
A skateboard, the largest technology, applied in the field of skateboard design optimization, can solve problems such as inability to carry out targeted design
Active Publication Date: 2018-07-20
HUNAN LIANZHI BRIDGE & TUNNEL TECH
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Problems solved by technology
[0003] At present, the design of jacking frame bridges is conservative and basically based on experience), and it is impossible to carry out targeted design according to geological conditions, frame bridge scale, and construction conditions
Method used
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Embodiment 1
[0071] Take the project of jacking the frame bridge under the Changzhang Expressway under the west extension of Liuye Avenue as an example, see figure 1 ,Details are as follows:
[0072] A method for optimizing the design of a skateboard, comprising the following steps:
[0073] Step A, the preparation step, specifically includes the acquisition of parameters, sensitivity analysis and measured bed coefficient, and the acquisition of parameters specifically includes the following parameters:
[0074] Concrete cube compressive strength f cu,k 30N / mm 2 , Concrete axial compressive strength f c 13.8N / mm 2 , Axial tensile strength of concrete f t 1.39N / mm 2 , ultimate compressive strain ε of concrete cu is 0.0033;
[0075] Design value of steel bar tensile strength f y 300N / mm 2 , Rebar elastic modulus E s 200000N / mm 2 , The design value of the compressive strength of steel bars f y' 280N / mm 2 and the design value of the tensile strength of the stirrup f yv 270N / mm ...
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The invention provides a sliding plate design optimization method. The sliding plate design optimization method comprises the following steps that (A) preparation is performed, specifically parameters are obtained, sensitivity analysis is performed and base bed coefficients are actually measured; (B) the sliding plate size is preliminarily planned, specifically sliding plate concrete strength, sliding plate thickness, the distance between adjacent anchorage beams, the specifications of the anchorage beams and the maximum allowable deformation of a sliding plate are selected according to the design requirements; (C) a beam grillage model of the sliding plate is established; (D) base stress checking calculation and maximum deformation checking calculation are performed; (E) sliding plate reinforcement calculation is performed to obtain sliding plate longitudinal beam reinforcement specifications and sliding plate transverse beam reinforcement specifications. The sliding plate design optimization method applies a beam grillage method to sliding plate design for jacking construction for the first time, the internal forces of anchorage beams and cast-in-place slabs are calculated by adopting the beam grillage method, the shortcomings of the sliding plate designed by relying on experiences can be overcome according to existing standard reinforcement, and a novel sliding plate design method is provided. The whole sliding plate design optimization method is simple in process, convenient to practice and convenient to popularize and use.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a method for optimizing the design of a slide. Background technique [0002] Jacking frame bridges are more and more widely used in expressway underpassing interchange projects due to the advantages of no need to close traffic, low cost, and small occupied area. In order to provide a work site for prefabricated and jacked frame bridges, work pits and temporary structures for slides are required). As the bottom plate of the working pit and the slideway in jacking, the slide plate has become one of the important components in bridge construction. [0003] At present, the design of jacking frame bridges is conservative and basically based on experience), and it is impossible to carry out targeted design according to geological conditions, frame bridge scale, and construction conditions. In actual engineering, the skateboard generally adopts cast-in-place monolithic sla...
Claims
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IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/367
Inventor 梁晓东左雁谭少海任协平肖龙辉涂义文刘妙群王文杰
Owner HUNAN LIANZHI BRIDGE & TUNNEL TECH