Construction of a multi-apartment residential building with built-in public premises on H. Columbus street, in Lviv
Students Name: Vantukh Mykhailo Ihorovych
Qualification Level: magister
Speciality: Industrial and Civil Construction
Institute: Institute of Civil Engineering and Building Systems
Mode of Study: part
Academic Year: 2023-2024 н.р.
Language of Defence: ukrainian
Abstract: Vantukh M.I., Peleh A.B. (head). Construction of a multi-apartment residential building with built-in public premises on the street. H. Columbus in Lviv. Master’s qualification work. - Lviv Polytechnic National University, Lviv, 2023 Lviv is a city that is part of an administrative district in Ukraine and is the center of the Lviv region. It is known as the national-cultural and educational-scientific center of the country, and is also a major industrial and transport hub. Lviv is considered the capital of Galicia and Western Ukraine. European highways E40, E372, E471 pass through the city, as well as international highways M06, M09, M10, M11, along with national routes N09, N13, N17, which connect Lviv with other cities of Western Ukraine. The city has the largest number of architectural monuments in Ukraine and was recognized as the Cultural Capital of Ukraine in 2009. Lviv regularly takes leading positions in the ratings of tourist and investment attractiveness. It is the seventh most populous city in the country. The population is about 760,000 people. There was a need to build a residential complex with the name: Construction of a multi-apartment residential building with built-in public premises on the street. H. Columbus in Lviv. (Construction of a multi-apartment residential building with built-in public premises on H. Columbus street, in Lviv). According to the master plan, the technical and economic indicators are: land plot area - 1962.00 m2, building area - 833.85 m2, paving area - 530.15 m2, landscaping area - 598.00 m2. The note indicates the direction of the winds with the orientation of the buildings. In accordance with the task envisaged by the project, parking spaces and a recreation area near the shopping and office center were designed. The overall dimensions of the building are 47.64 x 32.27 m in axes. The building is simple l-shaped in plan. The maximum height of the building is 21.6 m. The floor area is 3, 4, 5 floors with two-level underground parking. The planning of the residential complex was carried out in accordance with all project requirements and in compliance with current regulations, provided for: parking, warehouse, commercial premises, sanitary facilities, cafe premises, hall, etc. The construction of the external walls and facades is 250 mm thick brickwork, with insulation of 100 mm hard wool, the decoration is carried out with cement-perlite mortar with subsequent painting with frost-resistant and moisture-resistant facade paints according to the task. Also, the facade is formed from projections of monolithic slabs, which are decorated with a different type of finishing material. According to the structural scheme, the building is a monolithic space frame with stiffening diaphragms in the form of a monolithic stairwell and elevator shaft. Foundations - 600 mm thick monolithic slab, 400 mm thick columnar foundation under the stylobate part. Monolithic floor slabs serve as a hard disk. The stairs are monolithic. The walls are brick and insulated with mineral wool. The roof is a flat roof, insulated. The layers are indicated in the note and on the architectural drawings. The structural section of the thesis provides for the calculation of four main structures of the designed building. In this case, these are reinforced concrete structures, namely: monolithic beams, stairs, cover plate and foundation plate. The Dlubal RFEM software complex and manual calculations were used for machine calculation of building structures. The calculation of the monolithic reinforced concrete beam was carried out according to the largest moments taken from the Dlubal RFEM software complex and is carried out according to three calculations: manual according to DBN, manual according to Eurocode 2 and using the Dlubal RFEM PC. Concrete C20/25 working reinforcement A500S, clamps A240S. In the support areas, the step of the clamps is reduced. Reinforced concrete stairs are two-step and consist of structural elements of two types: platforms (slabs) and passage steps. Marches and stairs are reinforced concrete monolithic slabs that work in bending as beams on two supports. we accept the longitudinal working armature of the stairs ?12 mm, and the step ?? = 150 mm. We take the transverse reinforcement with a diameter of ?10 mm and a step of ?? = 150 mm, since the span in the transverse direction is much smaller - 120 cm. S20/25 concrete covering slab. We accept the background (main) bottom reinforcement? ?12 A400С with a step ?? = 200 mm. In places of larger moments, the main reinforcement is not enough, therefore we additionally install rods up to ?16 with a step according to the calculation. The upper mesh of the reinforcement (background): We accept ? ?10 A400С with a step of ?? = 200 mm. In places of larger moments, the main reinforcement is not enough, therefore we additionally install rods up to ?16 with a step according to the calculation. Structurally, we install additional fittings to frame the openings of the ceiling. Since there are additional forces in the places of the holes. We install reinforcement ?12 with a step of ?? = 50 mm. The Dlubal RFEM software complex was used for the machine calculation of building structures. In this program, the reinforced concrete frame of the building is modeled, taking into account all load-bearing elements and loads according to regulatory documents. Based on the data of engineering and geological investigations, the foundation is designed as a monolithic slab with a thickness of 600 mm. The material of the foundations is heavy concrete of class C20/25, brand W6, reinforced with grids and spatial frames made of reinforcement of class A500C. Under the foundations, it is necessary to arrange a concrete preparation with a thickness of at least 100 mm. According to the engineering and geological report, IGE-3 and IGE-4 soils are used as the basis of the foundations. The main lower reinforcement with a diameter of 16 mm, A500S, with a mesh step of 200x200 mm, the main upper reinforcement with a diameter of 16 mm, A500S, with a mesh step of 200x200 mm. Additional reinforcement is also provided according to the calculated areas obtained from the model. In the fourth section, calculations of local, object and consolidated estimates were carried out based on technical and economic indicators of the building. The topic of the scientific work is the study of cracking due to shrinkage deformations of concrete. In general, the minimization of the formation of cracks is achieved by organizing the technological support of concreting, which is based on the results of modeling the thermal stress state of reinforced concrete and allows to choose in advance the technology of active care (forced cooling of the concrete of the structure) or passive care (warming of the concrete, shelter with polyethylene film) for the concrete of massive structures. Control of the temperature regime of concrete hardening and regulatory measures should be carried out based on the results of monitoring the temperature of the concrete of the structure by comparison with the results of simulation modeling of the thermal stress state. According to the results of the technological support of concreting of a number of objects, defect-free structures were ensured at the design level, which confirms the reliability of the developed crack formation models and the effectiveness of the selected concrete care technologies.