Coursework on LBK "Load-bearing units. buildings with full frame "

Contents

Table of contents

Task

Joint plan of prefabricated and monolithic floors

1. Calculation and Design of Prestressed Rib Slab

1.1. Calculation of slab by limit states of the first group

1.1.1. Design span and loads

1.1.2. Forces from design and standard loads

1.1.3. Sizing Slab Sections

1.1.4. Concrete and reinforcement strength characteristics

1.1.5. Calculation of plate strength by section normal to longitudinal axis

1.1.6. Calculation of slab shelf for local bend

1.1.7. Calculation of panel strength by section inclined to longitudinal axis

1.2. Calculation of slab by limit states of the second group

1.2.1. Geometric characteristics of the given section

1.2.2. Pre-stress loss of valves

1.2.3. Calculation of crack formation normal to longitudinal axis

1.2.4. Calculation of panel deflection

2. Calculation and construction of the girder

2.1. Design diagram and loads

2.2. Calculating Bending Moments in Calculation Cross Sections

2.3. Redistribution of moments under the influence

formation of plastic joints in the girder

2.4. Crossbar Reference Points on Column Face

2.5. Crosswise forces of the crossbar

2.6. Calculation of cross-section strength normal to longitudinal axis

2.7. Calculation of cross-bar strength by inclined sections

to the longitudinal axis

2.8. Construction of girder reinforcement

2.9. Reinforcement of cantilever overhangs of girder shelves

3. Middle Column Calculation and Design

3.1. Determination of longitudinal forces from design loads

3.2. Defining Bending Moments

from the effect of design loads

3.3. Calculation of the strength of the middle column

3.4. Calculation of short column console with bushings

4. Foundation Calculation for Column

4.1. Foundation Design Data

4.2. Sizing Foundation Floor Sides

4.3. Determination of foundation working reinforcement area

5. Calculating and Designing a Monolithic Slab

5.1. Calculation of multi-span slab

5.1.1. Design span and loads

5.1.2. Concrete and reinforcement strength characteristics

5.1.3. Selection of longitudinal reinforcement sections

5.2. Calculation of secondary beam

5.2.1. Design span and loads

5.2.2. Calculation forces

5.2.3. Concrete and reinforcement strength characteristics

5.2.4. Determining Beam Section Height

5.2.5. Calculation of strength by sections normal to longitudinal axis

5.2.6. Calculation of secondary beam strength by sections,

inclined to longitudinal axis

List of used literature

Task.

Column grid - 5.8 x 7.4 m;

The dimensions of the building are -17.4 x 29.6 m;

Floor height - 3.6 m; The number of floors is 5;

Temporary load on the floor - 4.7 kN/m2;

Construction area - III snow area;

Design soil resistance - 0.255 MPa;

Concrete class of monolithic slab - B40;

Concrete class of prefabricated slab - B40;

Class of previously strained fittings of the national team of software - A1000;

Method of tension of pre-stressed reinforcement - mechanical;

The type of prefabricated PP is ribbed;

Section of prefabricated continuous girder - tavern with shelf in compressed zone;

The structure of the column console is a short console with heaps.