Experimental Study On Fire Simulation Of The Wooden Room Unit Of Fujian Tulou

Wooden structure as a world cultural heritage an important part of Fujian Tulou,earth buildings is also an important carrier of culture. Tulou to ram the wall and wooden as the main load-bearing systems, as with wood beams, plates, columns member. However, since the wooden structure is relatively poor performance of other refractory materials, even in itself is a combustible material, easy to burn resulting in Earthen fire hazard greatly increased. Therefore, the study of anti-fire Earthen wooden structure, to protect the Earthen has important and realistic significance. This paper is based on field research Tulou, earth buildings were fire simulation model tests in both ventilation conditions at home and abroad to fill the gaps Earthen wood structure fire resistance and fire resistance performance as well as all kinds of ancient architecture Earthen research to provide a reference.In this paper, on the Yongding, Earthen Zhangzhou area especially for the fire occurred Earthen use visits, questionnaires, measurement, statistics, etc. for research to understand the characteristics of the local soil building and construction technology in particular rammed earth, wood, timber-framed structure, Learn more about fire and measuring process parameters analyzed by fire wood member. After considering the purpose of the test equipment, test space, transport, funding and other constraints, we decided to make three single-room unit with two spans of Earthen overall scale model under fire in fire test furnace, two conditions of natural ventilation simulation test,while using the same batch of timber production test specimen timber material properties.Through the test specimen timber, calculate the moisture content, moisture content when appropriate density(air-dry density, total dry density, standard air-dry density)and compressive strength parallel to grain, and moisture content were converted to standard comparison. Analysis of the model test block different water content,compressive strength parallel to the grain of different density, the material properties of wood research.Fire simulation test first in a test furnace of fire Huaqiao University Earthen wooden structure model M1 fire test method using constant load test ignition temperature rise due to the phenomenon of the test is not obvious, the purpose of the test has not fully achieved, it will turn the test model M2, M3 instead of naturalventilation under field conditions constant load heating ignition fire tests. This paper describes the phenomenon in three model tests under different conditions and characteristics of fire damage, and is the corresponding phenomenon and features of the cause analysis to study the flame transmission path. Use IMP temperature collection equipment, the three models in different areas during the fire, the temperature distribution and variation of different components were determined,combining experimental phenomena were analyzed. Meanwhile, the test model under natural conditions after fire cutting, measuring its members to study the depth of carbonation, and analyzed and discussed transparent fireproof coating the affected fire under a constant load test performance of Earthen model.