Coursework - PPR for paving

Contents

Introduction

1 Initial data for road paving project

1.1 Characteristics of the construction area

1.2 Characteristics of the road under construction

1.3 Fundamental Solutions for the Construction of a Roadway

1.4 Calculation of Road Lining

2 Construction Site Requirements for Road Construction Materials

2.1 Determination of MPA volumes

2.2 Material Requirements

2.3.Transport MPA Delivery Scheme

3 Design of roadway construction technology

3.1.Qualified process diagram of construction

3.2 Quantitative process diagram of construction

4 Design of Road Construction Organization

4.1 Construction Season Duration

4.2.Basking of production time by flow method and calculation of main parameters

4.3. Squad picking

4.4. Organization and Technology of Works

5 Preparation of the linear work schedule

5.1. Linear Planning Board

5.2. Calculating the Demand for Auto Dump Trucks

6 Organization of quality control, labor protection and environmental protection during the construction of the roadbed

6.1 Environmental Protection

6.2.Protection of labor

6.3 Quality Control

List of literature used

Appendix A. Road-climatic schedule

Appendix B. Civil twilight schedule

Appendix B. Process diagram for the construction of the roadbed

Appendix G. Lineiny Construction Schedule

Introduction

The construction of roads consists of the construction of a complex of road structures, the main of which in value and cost is road clothing.

Road clothing must be strong in order to withstand loads from cars for a long time, wear resistant and have the ability to maintain strength when exposed to both increased positive and negative (frost resistance) temperatures.

Input data for Road Construction Project

The road passes on the territory of the Novosibirsk region (III1 road-climatic zone), belongs to the IV technical category. The length of the construction site is 25 kilometers.

Road clothing design:

1. SPE;

2. Asphalt concrete, type A, hot, dense;

3. Crushed stone reinforced with inorganic binder (cement);

4. ASG.

1.1 Characteristics of the construction area

The Novosibirsk region is located in the southeastern part of the West Siberian lowland, adjacent in the east to the Salair ridge, in the forest, forest-steppe and steppe zones. The main river is Ob [1].

Climate

The road construction area belongs to the third road-climatic zone; a characteristic feature of this area are: short winters, a large amount of snow and wind, short summers and long spring and autumn with a large amount of atmospheric precipitation.

According to long-term observations, the absolute minimum temperature

is -520 С, absolute maximum + 380 С, average temperature of the warmest month of the year - July + 17.20 С, average annual temperature -0.70 С.

Snow cover lasts an average of 165 days. The beginning of stable snow cover falls on the third decade of October, snow cover falls on average on the third decade of June. The depth of soil freezing on average ranges from 150 cm to 220 cm. According to SNiP 2.02.0182, the depth of soil freezing is accepted as 220 cm. Complete thawing of the soil occurs in the third decade of May.

The climate is continental, characterized by harsh and long (up to 5.5 months) winter. Summer is short, low-sugar. The average July temperature in the north is + 18.10 С (maximum air temperature + 270 С). Spring and autumn are characterized by sharp changes in air temperature. Annual rainfall from 300 mm in the south to 450 mm in the north. Most of the precipitation falls in summer. The growing season in the northern parts of the region lasts 144148 days and 158163 days in the south [1].

Relief

A flat hryvnia relief with many small swampy lakes is developed.

It has a pronounced plain relief with absolute heights of up to 150-200 m and only in the eastern part of the region enter the prison of the Salair ridge with heights of 300-350 m.

In the direction from northeast to southwest. Intergrive depressions are occupied by swamps and lakes. The lowland part of the Novosibirsk region is distinguished by its comparative monotony and simplicity of geological structure. It is composed of loose, significant power, horizontally lying deposits (clays, loam, sands, marls, loess loam, etc.) mainly of tertiary and quaternary ages. Crystalline rocks and dislocated metamorphic strata of Paleozoic age appear on the surface only at Kolyvan, Novosibirsk and Berdsk [1].

Geotechnical conditions

The area belongs to the tectonic structure of the West Siberian Plate, the so-called Tenny saddle, composed of modern and inferior thatched alluvial and lake sediments that cover neogene formations.

Heavy dusty loams predominate, dusty clays are less common and light dusty loams with loess-like properties. Groundwater near the surface, periodic watering of sediments led to degradation of these properties, to significant compaction of soils in negative landforms due to waterproof clays in the lower part of the reserve [1].

Minerals

In the Novosibirsk region there are deposits of coal (in the area of ​ ​ the Ini River, etc.) deposits of various clays (ceramic, refractory, brick), building stone, sand, pulverized quartz, mineral paints, peat, table salt and others) [1].

Hydrography

Most of the rivers belong to the Ob basin, the rest flow into dryless lakes. Ob crosses the eastern part of the region from south to north for about 400 km. On the right, large tributaries flow into the Ob - Berd and Yin, on the left - Irmen, Tula and some other small rivers. The northwestern part of the region is irrigated by tributaries of the Irtysh: Omyu (with tributaries of Ichi, Kama, Tartas flowing into it) and Tara (with tributaries of Maysas and Chey). The rivers are characterized by a slow flow, extreme tortuosity of the channels and numerous old people. River nutrition is mainly due to melting snow. In the central part of the region, the bulk of large ones is concentrated. Between the manes is a large number of small lakes that have an elongated shape. Large lakes are shallow and with a significant change in water level, their area and shape changes significantly. Significant areas of the Novosibirsk region are occupied by swamps confined to flat watersheds of intergrive declines. In the Baraba steppe, great work is being carried out on the water reclamation system of the Novosibirsk region (drainage of swampy lands and others) [1].

Soils

The western part of the region (Barabinsky steppe) is characterized by varieties of meadow saltwater salt marshes, meadow-chernozem and saltwater soils of the swamp type. In the north of the Barabinskaya steppe and in Vasyuganye, peatland and meadow-chernozem (frozen and malted soils) prevail. In the central part - on manes and riverine ramparts - weakly saltwater or saltwater chernozems and gray saltwater soils are common. In intergrive depressions - peat-marsh soils, salt-marsh soils of the saltwater type and malt (in saucy-shaped westerns). Saline soils are common in the south of the Baraba steppe (south of the Omi River and Lake Sartlan). In the Ob valley - alluvialnolug soils [1].

Method of roadway construction

There are several ways of arranging road clothing:

1. trough method,

2. semi-short-term method,

3. a rootless method (sprinkled shoulders).

We choose a rootless method of constructing road clothing as the most rational, more suitable in these climatic conditions. The rootless method is less laborious in technological terms, and less dependent on changes in soil humidity during precipitation. Moreover, the earthen canvas was arranged by the method of sprinkling shoulders, in the expectation of a trough-free method of constructing road clothing.

The most commonly used methods of organizing the construction of road clothing are in-line, parallel, consistent and separately sequential methods. In this course project, we will adopt an in-line production method, since its main advantage over the rest is that the flow consists of detachments of specialized machines that build structures or road elements, moving continuously and in parallel in a technological sequence. At the same time, each link of the machines, having performed work on the site, goes to another one, taking into account the requirements of the technology. This method is more economical, high-quality and fast.

A stream may consist of units of specialized streams.

For our working conditions, we choose one stream that will perform a set of works on the construction of road clothing.