9 m 1 m 1 m 12 MN Pier: 3 m x 10 m 3 m 5 m Dense sand e = 0.45 E' = 55 MPa v' = 0.35 $ = 36° Normally consolidated clay = 0.85 Sand and gravel Ce=0.3 (S) = 40 kPa E' = 15 MPa v' = 0.25, Vu = 0.45 = 30°

9 m 1 m 1 m 12 MN Pier: 3 m x 10 m 3 m 5 m Dense sand e = 0.45 E' = 55 MPa v' = 0.35 $ = 36° Normally consolidated clay = 0.85 Sand and gravel Ce=0.3 (S) = 40 kPa E' = 15 MPa v' = 0.25, Vu = 0.45 = 30°

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

Calculate the settlement of the bridge pier shown in Fig. ?-f (page 3) due to primary
consolidation of the clay. The bridge load imposes an approximate vertical stress increase
at the center of the clay layer of 150 kPa.

9 m
1 m.
.00
1 m
000
00
12 MN
3 m
Pier: 3 m x 10 m.
5 m
Dense sand
e = 0.45
E' = 55 MPa
v' = 0.35
$' = 36°
Normally consolidated
eo= 0.85
E' = 15 MPa
=
Sand and gravel
clay
Ce=0.3
(S₂)
= 40 kPa
0.25, V₁ = 0.45 cs=30°

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