流體力學在土木工程裡,採用流體靜力學為主要的教學內容,因為水工結構設計採用溢堤最高水位。溢堤水位要再往上抓個高度,將使水工結構呈現梯形載重,此溢堤高估水位高度為最高水位。我定義溢堤高估水位,為溢堤高度再抓個2﹒5米以上。
[混凝土結構設計/結構靜力分析/流體靜力學梯形載重/水工結構設計最高水位=溢堤高度+2﹒5米以上/]
水的單位重是1tf/m3,水位高度的米數就是水壓力值,溢堤位置水壓是2﹒5tf/m2,往下加米數到底部就是底部水壓。梯形面積取單位寬是水壓側力,以矩形+三角形計算傾覆力矩,此為結構靜力分析的過程。以混凝土結構設計規範做設計,經適當配筋後即為水工結構設計。在箍筋抵抗剪力方面,應從底部每50cm計算1次剪力,以有效控制不同深度的剪力強度。流體力如下所示,其他的結構載重,包括:D、L、E、X,都應納入做結構分析。
Journal of Hydraulic Engineering, ASCE
May 27, 2015
Title
Structural Design of Hydraulic Engineering
Abstract
The structural design of hydraulic engineering is re-defined for the hydraulic engineers.
Keyword: Structural Design of Hydraulic Engineering
I. Structural Design of Hydraulic Engineering
The structural design of hydraulic engineering must be defined by the overflow water line, and the shear design of concrete structures should be calculated from the bottom to the up at the 50cm intervals. Besides, the suggested minimum value, 2.5m, is the water height from the overflow water line to the top location for the hydraulic structure. The fluid load is calculated as the following equations, and the other loads should be calculated by the relative standards.
where pt is the water pressure of the top location for the hydraulic structure, pb is the water pressure of the bottom location for the hydraulic structure, X is the water height from the overflow water line to the top location for the hydraulic structure, X=2.5, for example, h is the water height from the top to the bottom location for the hydraulic structure, V is the shear force of the 1m width for the hydraulic structure, M is the overturn moment of the 1m width for the hydraulic structure.
水的單位重是1tf/m3,水位高度的米數就是水壓力值,溢堤位置水壓是2﹒5tf/m2,往下加米數到底部就是底部水壓。梯形面積取單位寬是水壓側力,以矩形+三角形計算傾覆力矩,此為結構靜力分析的過程。以混凝土結構設計規範做設計,經適當配筋後即為水工結構設計。在箍筋抵抗剪力方面,應從底部每50cm計算1次剪力,以有效控制不同深度的剪力強度。流體力如下所示,其他的結構載重,包括:D、L、E、X,都應納入做結構分析。
Journal of Hydraulic Engineering, ASCE
May 27, 2015
Title
Structural Design of Hydraulic Engineering
Abstract
The structural design of hydraulic engineering is re-defined for the hydraulic engineers.
Keyword: Structural Design of Hydraulic Engineering
I. Structural Design of Hydraulic Engineering
The structural design of hydraulic engineering must be defined by the overflow water line, and the shear design of concrete structures should be calculated from the bottom to the up at the 50cm intervals. Besides, the suggested minimum value, 2.5m, is the water height from the overflow water line to the top location for the hydraulic structure. The fluid load is calculated as the following equations, and the other loads should be calculated by the relative standards.
where pt is the water pressure of the top location for the hydraulic structure, pb is the water pressure of the bottom location for the hydraulic structure, X is the water height from the overflow water line to the top location for the hydraulic structure, X=2.5, for example, h is the water height from the top to the bottom location for the hydraulic structure, V is the shear force of the 1m width for the hydraulic structure, M is the overturn moment of the 1m width for the hydraulic structure.