Reconstruction of strip foundation

Design of bases and foundations of buildings and structures 

Course project

TASK

for course design

"Geotechnical Tasks in the Context of Reconstruction of Buildings and Structures with the Use of Effective Materials"

Course project 67 p., 5 figures, 10 tables, 5 sources.

       BASES AND FOUNDATIONS; PHYSICAL AND MECHANICAL CHARACTERISTICS OF SOILS; DESIGN RESISTANCE OF THE SUBSTRATE; SHALLOW FOUNDATIONS; FOUNDATIONS; DEFORMATION OF THE SUBSTRATE; CONSTRUCTIVE SOLUTION FOR STRENGTHENING THE FOUNDATION; TECHNOLOGICAL SCHEME OF FOUNDATION STRENGTHENING.

          The object of the course project is the calculation of the bases and foundations of a two-storey hotel building.

           As a result of the work on the project, the physical and mechanical characteristics of the soils were evaluated; Their name is given and the design resistance of the engineering and geological layers of the foundation is determined, calculations of shallow foundations according to limit states are performed, a constructive solution for strengthening the existing foundation is made.

Contents:

Introduction. 3

Initial data on the task.............................................................................. 3

        Design of the foundation reinforcement works. 4

            Initial data for design. 6

     1.       Geotechnical surveys ......................................................... 7

     2. Calculation of shallow foundations...........................................................13

    3. Calculation of foundations according to limit states................................................ 20

    4. Calculation of the foundation during reconstruction............................................................ 26

    5. Design of foundation reinforcement works...........................    32..

5.2       Determination of the composition of construction processes and calculation of the scope of work. 33

5.2.1    Dismantling of the asphalt pavement from the outside of the building. 34

5.2.2    Excavation of soil with a single-bucket excavator into a dump. 37

5.2.3    Cutting of the lack of soil in trenches after their excavation by an excavator.  37

5.2.4    Manual excavation in trenches located inside the building. 

5.2.5    Device for temporary fastening of the vertical wall of trenches. 37

5.2.6    Soil compaction with crushed stone at the base of the cage.  37

5.2.7    Cleaning the surface of the foundation with a sandblaster or metal brushes: 37

5.2.8    Making holes in the strip masonry for metal rods. 38

5.2.9    Insertion of metal rods into drilled holes. 38

5.2.10      Installation of reinforcing meshes. 38

5.2.11      Panel formwork concreting plant for concreting cages.  38

5.2.12      Placing the concrete mixture in the cages by hand.  38

5.2.13      Transfer of concrete mixture by conveyor belt.  38

5.2.14      Dismantling of wooden panel formwork. 38

5.2.15      Dismantling of the temporary fastening of the trench wall. 38

5.2.16      Backfilling of the outer trench with a bulldozer.  39

5.2.17      Compaction of bulldozer soil. 39

5.2.19      Installation and rearrangement of trays and conveyor belts up to 100 kg  10

5.3       General Principles of Foundation  Reinforcement Works with Reinforced Concrete Cages   39

6.     Technological map for strengthening the strip foundation. 40

6.1       Scope of application of the developed technological map..  41

6.2       Organization and technology of work performance. 43

6.3       Requirements for the quality of work. 48

6.4       Logistical requirements. 52

6.5       Safety and Environmental Protection.  54

6.6       Technical and economic indicators. 57

References..  65