Once a major city of Central Asia, it is primarily known today as the birthplace of 14th century Turco-Mongol conqueror Timur. Shakhrisyabz is located in southern Uzbekistan approximately 80 km south of Samarkand, Uzbekistan. In addition to that, more historic structures in Samarkand were scanned. An extensive list of historic structures included many cities of Uzbekistan: Bukhara, Shakhrisybaz and Tashkent. The laser scanning expeditions were expanded into new cities. New expeditions and monitoring by laser scans The original taper of the minaret is estimated as 2.3 per cent. Based on the analysis of the point cloud, an estimate of 4.6 per cent of inclination was obtained. The point cloud of one of the leaning minarets provided answers to questions regarding the amount of incline in the structure.
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“And Cyclone’s simple registration enabled the team to process the point clouds for fast analysis.”
“With the ScanStation's ability to achieve ultrahigh scan speeds, we were able to quickly collect the data needed for a thorough investigation of the monuments,” said Liliya Myagkova, Smart Scanning Solutions CEO.
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In generation of finite element models from the point cloud, Leica Cyclone software was used for surfaces with complex geometry. The scan data produced extremely valuable results to be used in the decision making of further restoration strategies for the monument located in this earthquake-prone area of Central Asia. To achieve this level of detail in point density, all scans were conducted with a density of 2 mm by 2 mm. In addition to the global dimensions of all monuments located within the ensemble, the scans captured all details of the monuments: tile shape and dimensions, their overall locations in the monuments, any imperfections and the overall geometric shapes of the portals and facades. The ensemble was scanned from more than 70 stations with a Leica ScanStation.
Structural repairs and straightening of the minarets had been conducted in 19 however, major restoration works were undertaken in recent years. The ensemble includes the Ulugh Beg Madrasah, 1417-1420, the Sher-Dor Madrasah, 1619-1636, the Tilya-Kori Madrasah and Mosque, 1646-1660, and the 18th century Chorsu domed market.Įarthquakes, extreme seasonal temperatures, normal depreciation of the buildings and the economic crises of the 18th and 19th centuries have left the ensemble in a ruined condition. The beginning: assessment of natural declineĪs a representative example of the many heritage monuments, the Registan Square ensemble in Samarkand, Uzbekistan was selected. Multiple monuments have been captured and analysed for earthquake susceptibility. The high definition surveying (HDS) or laser scanning, from Leica Geosystems fulfils this need.Ī joint research team comprised of members from UC Berkeley’s Structures Laboratory (a research lab specialising in full-scale structural testing and numerical analysis), Miyamoto International (an earthquake and structural engineering firm in the USA), Smart Scanning Solutions, LLC (a 3D scanning and modelling service provider in Uzbekistan) and BNZ (Leica Geosystems’ representative in Uzbekistan) has been deploying HDS reality management technology at heritage monuments along the historic Silk Road within Uzbekistan. Civil engineers are in a continuous search of non-destructive measurement techniques that can help to estimate structural condition.