Design of precast reinforced concrete multi-storey building

Contents

Contents

Introduction

1.Assembly Slab Design Layout

2. Calculation of prefabricated reinforced concrete floor panel

2.1.Panel Design

2.2.Level load collection

2.3.Material materials for floor panel

2.4. Calculation of panel shelf on local bend

2.5. Calculation of longitudinal edges of the panel

2.6 Calculation of strength of normal sections

2.7 Calculation of strength of inclined sections

2.8 Geometric characteristics of the given section

2.9 Determine prestress losses

2.10 Calculation by crack formation

2.11 Calculation of crack opening normal to longitudinal axis

2.12 Calculation of plate deflection

3 Calculation of prefabricated single-span floor girder

3.1 Design span, design diagram

3.2 Size assignment of the girder

3.3 Load collection

3.4 Determination of calculated forces

3.5 Material Characteristics

3.6 Rigel sizing adequacy check

3.7 Calculation of strength of normal sections

3.8 Calculation of strength of inclined sections

3.9 Construction of girder reinforcement

4 Calculation of precast reinforced concrete column

4.1 Design Data

4.2 Loads on the column of the middle row of the first floor

4.3 Determination of forces in the column

4.4 Design length of column

4.5 Column Flexibility

4.6 Selection of longitudinal reinforcement

4.7 Column console calculation

5 Foundation calculation for middle column

5.1 Design Data

5.2 Sole sizing

5.3 Determination of foundation height

5.4 Strength of foundation for pressing

5.5 Calculation of foundation reinforcement

Conclusion

List of sources used

Introduction

The purpose of this course project is to acquire skills in the practical use of theoretical material, familiarization with existing norms and special literature.

It is planned to design reinforced concrete structures of a multi-storey building with an incomplete frame - internal reinforced concrete columns and external load-bearing walls made of brick.

Floor Panel Materials

Heavy concrete of class B 45 with volume weight 25000 N/m3. Rated resistance of concrete to compression of Rv = 25.0 MPas. Design tensile strength of concrete Rwt = 1.45 MPa. Normative resistance of concrete to compression and tension Rvn = 32 MPa; Rptn = 2.2 MPa. Concrete Working Conditions Factor

Concrete is heat treated at atmospheric pressure. Initial module of elasticity of Ev concrete = 37500 MPas.

Stressed reinforcement of class Bp II is pulled mechanically on stops. The technology of production of the floor panel is aggregate-flow.

Design resistance of reinforcement to tension Rs = 850 MPa. Standard resistance of reinforcement to tension Rsn = 1020 MPa. Elastic modulus of reinforcement Es = 200000 MPa. Non-stressed reinforcement in panel shelf Bp I, in ribs - Bp I. Es = 170000 MPa. Rs = 370 MPa.

Design resistance for action of transverse force Rsw = 265 MPa. The panel will be operated indoors at air humidity above 40%.

Conclusion

During the work on the project:

1. Calculation and design of prefabricated prestressed reinforced concrete floor panel;

2. Calculation and design of precast reinforced concrete single-span floor girder;

3. Calculation and design of reinforced concrete column and middle row foundation.

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