Construction of subgrade and pavement

CONTENT

Section 1 ROADBED

1.1 Calculation of the stability of the subgrade

1.2 Designing a subgrade on a weak foundation

1.2.1 Input data for the calculation

1.2.2 Determination of floating embankment settlement

1.2.3 Calculation of embankment settlement over time

1.2.4 Checking the stability of the foundation and choosing a design and technological solution for the construction of the embankment

Section 2 PAVEMENT

2.1 Design – calculation of strength, frost resistance and drainage of non-rigid pavement.

2.1.1. Pavement design

2.1.2. Calculation of pavement for frost resistance.

2.1.3. Calculation of pavement according to elastic deflection.

2.1.4 Design of the structure for the resistance of monolithic layers of the coating to fatigue failure due to tension during bending. 

2.1.5 Flexural design at the level of the lower layer of asphalt concrete.

2.1.6 Shear calculation. 

2.1.7 Static Load Analysis.

2.2. Design and calculation of strength of rigid pavement.

2.2.1. Strength calculation of a concrete slab.

2.2.2. Calculation of temperature stresses in concrete slabs.

2.3. Selection of pavement variant according to technical and economic indicators.

SECTION 3. INCREASING THE STABILITY OF THE ROADBED ON WATERLOGGED AND WEAK SOILS WITH GEOSYNTHETICS.

3.1 Erection of embankments with replacement of weak soils at the base.

3.2 Erection of embankments with preservation of weak soils at the base. 

3.3 Installation of vertical drains.

3.4 Installation of piles.

3.5 Belt drains made of geotextile materials

3.6 Device made of flexible pipes and geosynthetics

REFERENCES.