The subject of this study was the complex structure of a wooden historic church, which consisted of several segments that differed in the material used, the structural system employed, and the degree of wear of the elements. Particularly examined were the multi-branched columns located at the junction of different segments. The main objective of the analyses was to determine the degree of bonding of the column branches and the effect of this bonding on the operation of the entire structure. To evaluate the degree of bonding of the column branches, it was proposed to use experimental modal analysis. Based on the results of the experiment, it was found that the column branches are connected, but their cooperation is limited. Several computational models of the analyzed structure were also created, differing, for example, in the degree of bonding of the column branches. The effect of bonding the column branches on the values of stresses in the nave columns and on the values of extreme wind-induced displacements was studied.
To support the conservation efforts regarding a wooden church in Domachowo, extensive research and design work was required to strengthen its weakened structure. A variety of data and analyses are necessary to make an accurate assessment, including obtaining a dimensional model, monitoring the behavior of the structure and its response to external forces, and also performing strength analyses and verifying them with measurement data. For accurate geometric evaluation, static and dynamic measurements were required. A mathematical model and a flowchart of the necessary tasks were developed, along with the selection and installation of measuring devices. For this particular structure, static measurements were made using an automatic total station, and dynamic measurements using tilt sensors. The purpose of the analysis was to correlate the inertia measurements with the absolute tachymetric observations related to reference points fixed outside the object in order to accurately assess the behavior of the object. Another important issue was to model the column element under study in such a way that its horizontal displacements could be determined from the measured inclinations. The obtained results indicated the need to strengthen the joints of the two main parts of the structure in order to minimize the impact of dynamic weather conditions. The paper describes the measurement process, the method of calculating displacements, and the correlation of both types of data. Selected results confirming the conclusions are also presented.
24 June 2023 in The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Medieval architecture in Poland is not widely represented in the tangible cultural heritage. A preserved structure with traces of medieval architecture is the parish church in Domachowo in southern Greater Poland (Wielkopolska). Due to numerous alterations and modernisations, it is now a complex structure showing clear signs of a damaged original geometry.For this reason, a project was initiated to measure the stability of the structure, especially under the influence of extreme external factors: mainly gusts of wind and uneven sun illumination. The implementation of the project required using two methods of measurement: static, at fixed time intervals, and dynamic, recorded on an ongoing basis during the operation of variable loads. The outcomes consisting of a combination of both methods and the unconventional use of precise inclinometers for measuring wooden structures, opens up new possibilities for real-time analysis of structural deformations and ongoing monitoring of technical conditions.The subject of this paper is to present the methodology of the conducted static-dynamic measurements (DSM) and the interpretation of their results, mainly in the context of assessing accuracy, stability of long-term readings with inertial sensors, and basic structural assessment.
Sacred wooden architecture in Poland is a huge and still unrecognised research problem. It covers a number of issues of interdisciplinary character: from the properties of building materials and carpentry techniques, through constructionand architectural-spatial solutions, to cultural and natural conditions. Hence, the best way to study this problem is interdisciplinary research. The necessity of cooperation of representatives of various scientific disciplines became the basis for creating a team to study the wooden church of St Michael the Archangel in Domachowo, so far dated to 1568. As researchers representing various disciplines (including archaeology, history, art history, history of architecture, architecture, architectural conservation), we cite sources and research that allow us to formulate a thesis that the past of the Domachowo church dates back to the 14th century. Moreover, we present the research and methodological problems inscribed in the aforementioned church building, understood as a whole. Such a multifaceted approach allows us to redefine the current knowledge about the church in Domachowo.
26 June 2023 in The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The protection of cultural heritage is an important task of communities on various levels of social organization. The institutionalization of the processes of protection of modern heritage assets provides the necessary instruments (legislative, juridical, financial) enabling the actual realization of the assumed tasks. The criterion of age, which is still a dominating premise for monument protection, proved not to be sufficient, especially concerning protection of monuments of Modernism. A step that led to the determination of the value of individual architectural objects of the 20th century was the establishment of 10 evaluation criteria proposed by historians of architecture in Warsaw, and afterwards in Poznan. In this work, we focus on the architectural value of post-war buildings, which are most difficult to evaluate. Furthermore, we wanted to apply AI to objectify the process of decision making. The adequacy of the Dominance-based Rough Set Approach (DRSA) method has been established. This method takes into account preference orders on criteria and models patterns observed in data in terms of monotonic “if …, then …” decision rules.