No abstract

The paper considers the joint connection rigidness in a modular building. The joint connection of columns and crossbars with a cross section in the form of square pipes are investigated. The study was carried out by the component finite element method using the IDEA StatiCA software package, the classification of joint connections was adopted according to Eurocode 3. The authors consider two types of joint connections, namely, the ones with an angle stiffener and the ones without an angle stiffener. In the course of research, there were obtained the values of the rotational rigidity of joint connections for various parameters. The boundary characteristics at which joint connections should be considered rigid have been established.

The research paper focuses on internal forces determination in the elements of modular buildings under wind load. It provides a methodology for determining dynamic characteristics of a building and for calculating wind loads. This method is based on the following assumptions: coupling of the modules elements is rigid; coupling of block-modules with foundations is hinged-fixed; connection of blocks to each other is hinged in angular points; the floor disk in its plane is not deformed. On the basis of these assumptions the authors derived approximate and refined equations for determining forces in modules elements under static and pulsation components of wind load. The equation of bending moments determination in the pillar bearing cross-section is obtained by approximation of the graph of moments variation, calculated for the spectrum of the ratio of the pillar stiffness and the floor beam in the range from 1/64 to 64. The paper further introduces the calculation results of forces based on the proposed methodology and on the finite element method. The calculations were done while taking different values of wind load and different number of storeys in a building (from 1 to 4 floors). The obtained results are similar, the error does not exceed 5%.

The re-use of materials, structures and their elements in the construction of buildings and structures of various responsibilities is dictated by the need to reduce the cost of the final product. Quite often, the end consumer (that is the owner) does not even realise that re-used materials were apploed for the construction of the object. The global task in this case is the established possibility of such application through a safety perspective. This requires the examination of materials and structures in order to assess the possibility of their re-use. In this study, the authors develop a methodical approach to such examinations, based on the existing normative-technical regulations. They also take into account their experience in inspection of materials and structures of re-used pipe piles in building construction.

The value of a land plot or property rights to it is an important link in the investment and construction design. This paper considers a transparent, comprehensible and justified mechanism for the development of cost parameters using a case study of land plots provided for construction located on the territory of the Stavropolsky municipal district of Samara Region. The obtained cost indicators of the land use provided for construction are determined based on the analysis and examination of not only real lease agreements but also using alternative calculations. While calculating the indicators, the authors applied the principles taken from the Decree of the Government of the Russian Federation of July 16, 2009 No. 582 as well as the analysis of real land lease contracts for construction and calculations based on current standards and the development of construction costs based on aggregated indicators.