文档介绍：STRUCTURAL
MECHANICS
OF
BURIED PIPES
Reynold King Watkins
Utah State University
Logan, Utah
Loren Runar Anderson
Utah State University
Logan, Utah
CRC Press
Boca Raton London New York Washington, .
©2000 CRC Press LLC
GENERAL NOTATION
Geometry
A = cross sectional wall area per unit length of pipe,
B = breadth of the trench
D = pipe (tank) diameter,
H = height of soil cover,
h = height of water table,
L = length of tank or pipe section,
r = radius of curvature of the pipe (tank) cylinder,
R = radius of a bend in the pipe,
t = thickness of the wall,
x = horizontal coordinate axis,
y = vertical coordinate axis,
z = longitudinal axis (with exceptions),
b = angle of soil shear plane.
Forces, Pressures, and Stresses
P = external pressure on the pipe or tank,
P' = internal pressure,
p = vacuum in the pipe or tank,
Q = concentrated force,
W = surface wheel load,
g = unit weights,
s = direct (normal) stress,
t = shearing stress.
Subscripts refer to directions of forces and stresses.
Properties of Materials
c = cohesion of soil,
E = modulus of elasticity of pipe (tank) material,
S = allowable stress (strength) of material,
g = unit weight of material,
n = Poisson ratio,
j = soil friction angle.
©2000 CRC Press LLC
CONTENTS
Chapter
1 Introduction
2 Preliminary Ring Design
3 Ring Deformations
4 Soil Mechanics
5 Pipe Mechanics
6 Ring Stresses
7 Ring Deflection
8 Ring Stiffness
9 Non-circular Cross Sections
10 Ring Stability
11 Encased Flexible Pipes
12 Rigid Pipes
13 Minimum Soil Cover
14 Longitudinal Mechanics
15 Thrust Restraints
16 Embedment
17 Parallel Pipes and Trenches
18 Special Sections
19 Stress Analysis
20 Plastic Pipes
21 External Hydrostatics
22 Buried Tanks and Silos
23 Flotation
24 Leaks in Buried Pipes and Tanks
25 Long-Span Structures
26 Non-circular Linings and Coatings
27 Risers
28 Analysis of Buried Structures by the Finite