Design method of prefabricated concrete slab girder for highway and municipal engineering based on new code
A design method and concrete technology, applied in bridge construction, roads, bridges, etc., can solve the problems that the old plate girder general diagram cannot meet the calculation requirements of the code, and achieve the effect of increasing social and economic benefits
Active Publication Date: 2020-09-08
XIDI (SUZHOU) SURVEY & DESIGN CONSULTING CO LTD
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Problems solved by technology
Subsequently, the "General Code for Design of Highway Bridges and Culverts" (JTG D60-2015) was promulgated and implemented on December 1, 2015. The value of the lane load is consistent with the "Technical Standards for Highway Engineering" (JTG B01-2014). The general graph can no longer meet the specification calculation requirements
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[0026] Based on the new code design method of prefabricated concrete slab girders for highways and municipal engineering, the cross-sections of the slab girders with conventional spans are drafted, and then starting from the selection of road cross-sections, a typical cross-section of highways and municipal engineering is selected, and two calculations are made respectively. The load lateral distribution coefficient of the mid-slab beam and side-slab girder under different cross-sections is analyzed and calculated for the mid-slab girder and side-slab girder under different load conditions. The envelope design takes the most unfavorable one as the design basis. The analysis and calculation results of the slab girder structure back check the rationality of the planed slab girder cross section to determine the reasonable cross section of each span slab girder and the configuration of prestressed steel beams and ordinary steel bars. The conventional spans include 6 meters, 8 meters...
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The invention provides a highway and municipal engineering assembled concrete plate girder design method based on a new standard. On the premise that the method meets the new standard, a plate girderstandard drawing suitable for both highway engineering and municipal engineering is adopted and popularized, plate girder safety allowance degree is greatly increased, the service life of each plate girder is prolonged, the effect of traffic infrastructural engineering is brought into full play, and economic benefits of the whole society are improved. Each conventional span plate girder cross section is drafted, in the aspect of road cross section selection, a typical cross section of highway engineering and a typical cross section of municipal engineering are selected, middle and edge plate load transverse distribution coefficients of the two cross sections are calculated, middle and edge plates are analyzed and calculated under different load working conditions, in envelope design, the most adverse part is taken as design reference, the drafting reasonability of the plate girder cross sections is back-checked according to a plate girder structure analysis and calculation result, andtherefore the reasonable cross sections of all span plate girders and the arrangement of prestressed steel strands and common steel strands are determined.
Description
technical field [0001] The invention relates to the technical field of concrete slab girders, in particular to a design method for assembled concrete slab girders based on new specifications. Background technique [0002] Prestressed concrete prefabricated slab girders are widely used in the construction of high-grade highways, municipal roads and rural roads in my country. Its advantages are obvious: because the beam body is prefabricated in the factory, the quality is easy to control; It can be constructed at the same time, speeding up the construction period to the greatest extent and reducing the total investment; in addition, factory prefabrication avoids environmental pollution caused by on-site construction, which is conducive to environmental protection. [0003] At present, most highway and municipal road construction projects in China use the general plan of plate girder promulgated by the Ministry of Communications, and some units in some provinces and cities use t...
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IPC IPC(8): E01D19/12E01C1/00G06F30/13
CPCE01C1/002E01D19/125G06F30/13
Inventor 郭胤昶彭卫陈淼王晓初张文超孙亦鸥倪文佳郭红敏陈红星
Owner XIDI (SUZHOU) SURVEY & DESIGN CONSULTING CO LTD