钢筋混凝土简支t梁设计任务书(路桥专业)(Design brief of reinforced concrete simply supported T beam (Luqiao major)).doc
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钢筋混凝土简支t梁设计任务书(路桥专业)(Design brief of reinforced concrete simply supported T beam (Luqiao major))
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Structural design principle curriculum design task and guide book structure design principle
A design of data
1. the cross section of the main girder is shown in Figure 1.
The basic size of standard span various standard span T beam (m) 1620 (M 15.96) 19.96 precast length calculation span (m) 15.60 h 19.60 (m)Bi (mm)Table 1 B (mm) 200200
H1
(mm) 8080
H2
(mm) 160160
Note: Bi girder spacing.
By calculating the effect of control interface two, load effect: (1) bearing shear bearing section is calculated according to the limit state of bearing capacity when the value shown in Table 2 (2) across the cross section of the worst moments in Table 2; according to the bearing shear bearing capacity limit state when calculating the value shown in table 2. (3) the other section from the mount to the mid span section, bending moment according to assumed parabola distribution, according to the change of shear line.
The effect of the span number section (m) of midspan moment (kN.m) constant load crowd car / vehicle load of 1310.08 1105.80 965.47 802.60 440.50 370.20 905.08 740.20 436.60 356.60 310.84 255.28
Table 2 point shear V (KN) 594.21 V shear span (KN) 139.42 level of concrete materials
C20 C25 C30 C35 C40 C20 C25
The main reinforcement level
One
One thousand one hundred and seventy-eight point zero eight
Twenty-seven point four six
Two
Twenty
One thousand one hundred and thirty-two point eight three
One hundred and thirty-nine point two five
Four hundred and eighty-nine point two five
One hundred and thirty-one point eight one
C30 C35 C40 C20 C25
Three
One thousand and eighty-nine point four four
One hundred and two point seven five
Four hundred and twenty-six point five two
One hundred and six point seven three
C30 C35 C40
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