Method for calculating bending dynamic resistance of simply supported reinforced concrete beam under near-field explosion
A technology of reinforced concrete beams and calculation methods, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problem of poor uniformity of shock wave pressure distribution, failure to consider or simplify material strength enhancement effects, and difficulty in accurately characterizing structural resistance characteristics And other issues
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0097] For any reinforced concrete simply supported beam structure, the length is L(m), when the explosive is placed directly above the mid-span of the structure, the surface load form of the structure is where P m is the peak reflected pressure at the mid-span position, α p is the pressure distribution coefficient, x is the coordinate of the beam surface along the direction of the span, and the origin of the coordinate is at the middle of the span;
[0098] According to the above implementation method, the ultimate resistance of the structure and the ultimate bending moment of the section can be obtained to satisfy the formula:
[0099]
[0100] image 3 given in R y L / M y (vertical axis) and α p / L (horizontal axis) function curve. It can be seen from the figure that when α p When / L tends to a small value, the surface load of the structure is approximately uniform, and R y L / M y The value is 8; when α p When / L tends to a larger value, the surface load of the ...
Embodiment 2
[0103] like Figure 4 As shown, in a certain test, 1kg spherical TNT was suspended at 0.5m directly above the middle span of a simply supported reinforced concrete beam. The effective dimensions of reinforced concrete beams are: length (L) 1.4m, width (w) 0.13m, height (H) 0.13m, cladding layer thickness (b) is 20mm, reinforcement Figure 5 shown.
[0104] According to the mass of the explosive and the proportional distance, the proportional distance r=R from the center of the explosive to the surface of the reinforced concrete beam structure can be determined 1 / W 1 / 3 =0.5m / kg 1 / 3
[0105] A steel beam is installed adjacent to the reinforced concrete beam for installing the pressure sensor, and the upper surface of the steel beam is flush with the upper surface of the reinforced concrete beam. The pressure sensor is installed on the central axis of the steel beam, with a total of 5 pressure measuring points (P1, P2, P3, P4, P5), the distance between the measuring points ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
