International Workshop - Nanxun

Tongji University

CAUP -  Laboratory for Architecture Conservation

同济大学建筑 - 历史建筑保护实验中心

Hefei University


University of Applied Sciences and Arts - HAWK Hildesheim/Germany



Workshop Nanxun Old Town:

The town developed due to the waterways. The waterway became streets and houses were constructed beside the waterways. Boats were used for transportation. The waterways intersected within the town, which is surrounded by an outer ring of waterway. The traffic pattern of the ancient town has the land traffic parallel to the water traffic; the street is in front and the waterway in the rear. In the whole town, the waterways have a total length of 4.5 kilometres. There still remain 15 old bridges from the Song, Yuan, Ming and Qing Dynasties; the traditional flagging streets are 3 kilometres in total length. The houses were built on both sides of the waterways. The style and features of the traditional streets have been preserved. The layout remains that of imposing dwellings and spacious courtyards, gardens and library, guild hall and chamber of commerce, sotto porticos crossing the streets, landing terraces and covered ways. Many traditional houses and carved-brick arches over gateways still stand today. Of these structures from the Ming and Qing Dynasties, there are about 100,000 square meters in floor area, four of which have been registered as cultural heritage relics of Zhejiang province (Two of them have applied for being listed as national cultural conservation relics); nine are the cultural conservation units of Huzhou Municipality, and 20 are the cultural conservation relics of Nanxun Town, which was named the Famous Historic and Cultural Town by the People's Government of Zhejiang Province.

The workshop wills analysis the damages of the old European buildings in Nanxun Old Town. The following question need to be answered:  Did extent the climate pollutes the constructions due to heat and humidity or due to moisture from the subsoil or rain. This creates an interaction (moisture / heat absorption / release) between the object and the climate. As a result, these interactions lead to changes in volume of the materials himself and, in particular in the case of ice or salt growing (freeze-thaw cycles), to stresses in the material structure which can lead to destruction of the material. Due to the cracks moisture entering the walls and destroy the systems.