The article discusses possible design solutions to improve the seismic resistance of stone buildings. In particular, the installation of antiseismic belts at the floor level, the installation of dowels and nodes for connecting the floor slabs with the walls and among themselves, the reinforcement of the walls with steel clips, as well as the installation of transverse frames, if the maximum distances between the axes of the transverse walls are not observed.
Keywords: stone buildings, seismic resistance enhancement, reconstruction, design solutions
The article discusses modern methods of strengthening the bowl of a reinforced concrete pool in the development of project documentation for major repairs or reconstruction of capital construction objects based on the results of the survey and assessment of the technical condition of structures. To implement design solutions for strengthening the pool bowl, other methods can also be used, for example, using modern methods of strengthening using composite materials [9-11]. This will increase the rigidity of each structure and the bowl as a whole. The development and implementation of these design solutions using modern methods will allow you to qualify the design of the pool bowl in a working state and return the ability to perceive all the loads acting on it.
Keywords: reinforcement, major repairs, reconstruction, design solutions, reinforced concrete, composite, strength, load-bearing capacity
Comparison of material and labor costs for two methods of strengthening short of flexible compressed pillars loaded at high eccentricities was made. Pillars reinforced on a stretched face with two strips of carbon laminates with a cross section of 50x1.2 mm, in combination with three-layer transverse clamps of carbon bars, located with a pitch of 190 mm, demonstrate, when tested, the maximum strength. The breaking load was 503.5 kN, which is 2.076 times more than the reference sample. Classical reinforcement, designed for maximum load, dramatically increased the cross-section of the pillars and the amount of additional load, because the thickness of the bead with unilateral extension was 90 mm. Comparison of only the cost of material and labor costs does not give a final answer to the question about the effectiveness of one or another method of reinforcement. It is necessary to take into account the time of work, the preservation of usable space, the possibility of strengthening without stopping production
Keywords: concrete, reinforced concrete, compressed element, flexibility, strength, composite, carbon fiber
Consider the adaptation of project documentation on the example of "plant for the production of household chemicals LLC" es. Si. Jones.»» The building was commissioned in 1996 and operated until 2017 in accordance with its purpose as a plant for the production of chocolate products. Currently, the technological lines of the plant “Cadbury Schweppes " dismantled. The building is under reconstruction and is being redesigned for the production of household chemicals. In the course of the survey, engineering-geological surveys were carried out, technical inspection of foundations was carried out, inspection of bearing and enclosing structures of the building was carried out, physical and mechanical characteristics of concrete foundations and steel bearing structural elements of the frames of factory buildings were determined. Also, in connection with the change of external and payloads, verification calculations of the frame-bond frame of the plant buildings in the most loaded zones were performed. The performed verification calculations showed that at the time of the survey, the design of the frames of the factory buildings have the necessary safety and stiffness under the action of operational loads.
Keywords: reconstruction, inspection, verification analysis, repair, steel frame production plant of household chemical production building, finished product storage
An approach to the calculation of the optimal values of the protective layer of longitudinally reinforced concrete columns, operating at a central compression. Modeling performed using FEM - Ansys package for the design and implementation of spatial models of flat section of the column.
Keywords: reinforced concrete column, longitudinal reinforcement, a protective layer of concrete, finite element method, critical load
On the basis of experimental data on the resistance of reinforced concrete columns eccentric compression was obtained analytical dependence of the limiting compressibility of concrete from the varied factors: the relative eccentricity of the external force eo / h and the reinforcement ratio μ.
Keywords: reinforced concrete column, longitudinal reinforcement, a protective layer of concrete, finite element method, critical load